US2600128A - Perforated pattern mechanism for looms - Google Patents

Perforated pattern mechanism for looms Download PDF

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Publication number
US2600128A
US2600128A US42642A US4264248A US2600128A US 2600128 A US2600128 A US 2600128A US 42642 A US42642 A US 42642A US 4264248 A US4264248 A US 4264248A US 2600128 A US2600128 A US 2600128A
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Prior art keywords
pattern
arm
dobby
secured
shaft
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US42642A
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Sr James L Reynolds
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SAM SCHWARTZ MACHINERY Corp
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SAM SCHWARTZ MACHINERY CORP
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/22—Needles; Needle boxes; Needle boards
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1529—Slide actuator

Definitions

  • This invention relates -to la dobby 'leem and more especially r ⁇ to'an-improved-pattern mounting *andiimproved means associated Atherewith ⁇ for' ⁇ cran)lling the mechanism'- of'r a 'conventional (lobby-head.
  • Figurej- 4vis anjenlarged elevation' looking'ifm the leftahandjs-ide of Figure? tothe righ-tand is ltakenalongfthe -line l-llv in Figure 2;
  • Figurei-Af is Van Y'extension 'ofi thev lo'wrriglthandportienef- Figure l; 4 Y
  • f Figure Bu is an elevationlooking fronthe 'rightf- - Figure 6 isfanenlarged yertcal sectinal' View taken along ⁇ the lines-t5u o f Figure 2'; y y
  • Figi-1re 7 is Van Y'enlarged elevation 'of the lvver central portionjof Figure and's-hovvingtlie "parts in a'diierent relative position;1 Y v Figure- 8 ⁇ is an elevation.similar!to ⁇ Figure' 7 fbt showing the parts i'n'gano'ther pesitinandtv'ith seme parts ybeing Ylfiroken away
  • Figure 9 is an enlarged ⁇ isometric iiivvvvith fparts section and being taken along" the'line '9-9fin Fg-urex2;
  • v Figure 1 0 is a sectionalfplan vitv'taln'sbstantially along thev line? lll- Il inlligure' ⁇ 8 f Figure 11- is an enlarged'plan-viewvithparts in section and ⁇ being takensubstaiitiallylalg the line H-.I I inFig'ure'l;
  • Figure 1,6 is an enlarged planv view with partsin section and being taken vsubst'antiall'ylalngfthe 1in@ 'i6- f6 in Figure'l; n K,
  • Figure 17 is anV enlarged bl'n l'w with Parts accedas 3 in section and being taken substantially along the line
  • Figure 18 is an enlarged plan View with parts in section and is taken substantially along the line
  • Figure 19 is an enlarged sectional plan view taken substantially along the line
  • Figure 2O is a view similar to Figure 19 and is taken along the line 20-20 in Fig-ure 3.
  • the loom has conventional harnesses
  • a conventional dobby head, broadly designated at 30, is shown in the drawings as being mounted on the right-hand vertical side frame member I0 of the loom. However, it is obvious that this mechanism could be mounted on either side of the loom.
  • This conventional dobby head 38 is mounted on the loom in a conventional manner and is shown in the drawings as being secured to an angle plate 3
  • the conventional dobby mechnism is also secured to the side frame member l0, as by screws 34, and to one end of the arch connection I2, as by a bolt 35.
  • the dobby head 30 comprises front and rear frame members 40 and 4
  • Each harness lifter jack has a conventional jack lever 45 ( Figure 6) pivotally connected to the same, as at 46, and these jack levers 45 are pivoted as at 41 and 50 to upper and lower dobby hooks 5
  • Top and bottom cross girts 53 and 54 serve to limit left-hand motion of the jack levers 45, in Figure 6, thus positioning the harness jacks 43.
  • Top and bottom combs 55 and 58 serve to guide and support their respective hooks 5
  • each have upper and lower horizontally disposed slots 16 and 11, respectively, in which the opposite ends of the upper and lower knives 60 and 6
  • a conventional rocker shaft 62 is oscillatably mounted in the front and rear dobby frame members 40 and 4
  • the upper and lower ends of the rocker arms 63 and 64 have conventional connecting rods 65 pivotally connected to the same, the other ends of which are pivotally connected to the ends of the jack knives 60 and 6
  • the rocker arm 63 in Figures 1 and 4 has an outwardly extending portion 66 integral therewith which has pivotally connected thereto, as at 68, the upper end of a conventional dobby connecting rod 61.
  • the dobby connecting rod 61 is pivotally connected at its lower end, as at 10, to a conventional dobby crank 1
  • the dobby head is associated with the harness mechanism of the loom'as shown in Figure 1 for controlling the weave of a pattern being woven by the loom.
  • the above described mechanism which is a conventional part of a dobby loom, has heretofore been operated by various means including control chains and paper or fabric pattern members, and it is the object of this invention to provide a new and improved means for mounting the paper or fabric pattern member as well as an improved means for positioning the hooks 5
  • FIGs 2, 3, and 4 there may be observed front and rear vertically disposed plates and 8
  • the plate 80 is secured to the front dobby frame member 40 by a bar 83 having an adjustment slot 84 therein which is penetrated by a screw 85 threadably imbedded in the front vertical plate 80 and the plate 80 is cut to conform to the lower right-hand portion of the front dobby member 40, in Figure 4.
  • the bar 83 extends upwardly and is secured, as by a screw 88, to the front vertical frame member 40 of the dobby head 30.
  • is cut to conform to the rear dobby frame member 4
  • the rearxnost rocker 64 has a vertical slot
  • has the right-hand end of a connecting rod
  • 05, in Figures 3, '1 and 8, is pivotally connected as at
  • the L-shaped .member . is oscillatably mounted on the vertically disposed plate 8
  • 3 is slidably penetrated by a pin
  • 5 is also a vertically movable member and has spaced vertical slots
  • 5 has pivotally mounted thereon, Vas at
  • is Vadapted to engage intermittently a ratchet Wheel
  • 30 are mounted, as by a pressed t, in a horizontally disposed arm
  • has horizontal sliding movement also on a grooved block
  • in Figures 3, '1 and 8 has a vertical slot
  • 4I is oscillatably mounted in bearing blocks
  • 42 is secured, as by a bolt
  • has an arm
  • 56 in Figures 4 and 17 has a boss
  • 56 has secured thereon, as by screws
  • 66 have slots :
  • 10 is wound :about the -hub of a pinion
  • 15 is vprevented from having :endwise movement :on the shaft
  • 1 6 by a collar
  • the cable 10 is wound about the hub of the pinion and its free end is welded, as at
  • 10 then extends downwardly from thepinion
  • 10 then extends downwardly and passes beneath a suitablefpulley
  • 81 is slidably penetrated by a .hook Vmember
  • 10 then extends upwardly and has a collar
  • 10 in Figures 4 and 17 then extends upwardly through the slot
  • 95 is rotatably mounted on a stub shaft
  • 24 are held integral with each other by suitable dowel pins 2
  • are adapted to engaged by a roller 2
  • 1 extends to the right beyond the roller 2
  • is to assist 1n accurately positioning the cylinder and the associated pattern member. to be later described, and to also prevent unintentional rotation of the parts with which the disk 2
  • are rotatably mounted on a sleeve 238 having an arm 23
  • has spaced projections or ears 232 integral therewith which are threadably penetrated by adjustment screws 233, the proximate ends of which are adapted to alternately engage the arm 23
  • the outer end of the sleeve 238 has a screw 234 threadably imbedded therein, on which a washer 235 is mounted, and this Washer 235 slidably engages the outer surface of the ratchet wheel
  • the sleeve 230 is fixedly mounted on the rear end of a shaft 240, as by a set screw 24
  • the shaft 240 is rotatably mounted in bearing blocks 242 secured as by screws 243, to the front and rear vertical plates 88 and 8
  • the shaft 248 has a cylinder 245 fixedly mounted thereon, having a plurality of equally and radially disposed spaced pins 246 projecting therefrom and being disposed adjacent opposite edges of the same.
  • the front end of the shaft 240 has a pinion 241 xedly mounted thereon which engages a pinion 250.
  • the pinion 250 is rotatably mounted on a shouldered stubv shaft 25
  • This pinion 250 also engages a pinion 251 which is identical to the pinion 241 and is fixedly mounted on one end of a shaft 260 rotatably mounted in bearing blocks 26
  • are mounted in identically the samemanner and, consequently, only the shaft 21
  • the bore 268 is restricted, as at 269, and the other end of the spring 215 engages the shoulder formed by the restricted portion 269 of the bore 268 to thus urge the plunger 212 from left to right in Figure 14 and to urge the plunger into engagement with the left-hand end of the shaft 21
  • the restricted portion of the plunger 212 has a knurled nut 211 threadably mounted on the outer end thereof which may be grasped by an operator and pulled from right to left in Figure 14 to thus release the left-hand end of the shaft 21
  • , on which the feed roll 261 is fixedly mounted is fixedly penetrated by a transverse pin 280 projecting from opposite sides thereof.
  • An extension shaft 283 is provided having a cavity 282 therein and being slotted, as at 28
  • the pin 280 is adapted to fit in the slot 28
  • the extension shaft 283 is rotatably mounted in a bearing block 285 secured, as by bolts 286, to the vertical plate 8D.
  • This extension shaft 283 has a restricted portion 298 integral therewith on which a pinion 295 ( Figures 4 and 19) is mounted and is keyed thereto by a pin 286.
  • the pinion 295 is prevented from having endwise movement on the restricted portion 2930i the extension shaft 283 by a collar 291 secured thereon as by a set screw 306 ( Figure 19).
  • the pinion 295 is adapted to engage the pinio
  • the pinion 295' which is identical to the pinion 295 and this pinion 295' is fixedly mounted on the restricted portion 293 of the extension shaft 283' Which is identical to the shaft 283 heretofore described, and this pinion 295 meshes with the pinion
  • the feed roll 261 has one end of a suitable paper or fabric pattern member indicated at P secured thereto, as by an adhesive or by staples or the like, and the required length of the pattern member P is wound about the feed roll 261 and then extends upwardly in Figure 6 over the cylinders 245 and 265, successively, and this pattern member P has a plurality of spaced perforations 318 adjacent opposite edges thereof which coincide with and are adapted to be engaged by the pins 248 and 286 in the cylinders 245 and 265, respectively.
  • the pattern member P then extends downwardly from the cylinder 265 and a minor portion of the pattern member P is wound about the roll 218 and its other end is secured to the roll 216, by any suitable means such as an adhesive or staples or the like.
  • the roll 261 is referred to as a feed roll and the roll 218 is referred to as a take-up roll, it is obvious that when the pattern member P has been wound from the roll 261 to the roll 210, and the reversing mechanism has caused the pattern member P to change its direction, in the manner to be later described, the take-up roll 210 would then serve as a feed roll and the present feed roll 261 would serve as a take-up roll.
  • the pattern reading unit broadly designated at 320 is shown in Figures 2, 3, 6 and 9.
  • This pattern reading unit 328 comprises a lower transverse bar 32
  • coincide with each of the double rows of perforations in the pattern member P as the pattern member P is moved in step by step relation through the pattern reading unit 320, and the upper surface of the bar 32
  • a corresponding reading pins are adapted to penetrate the corresponding perforations 3
  • the pins 325 and 326 are mounted for vertical sliding movementin the transverse guide bars 321 and 328 ( Figure 9) vand these pins 325 and 326 have enlarged portions 330, which slidably penetrate another transverse guide bar 33
  • Y are in parallel spaced relation to each other and are mounted for vertical sliding movement 4'at each end thereofV on guide members 332 secured, as by welding, to the proximate surfaces of the vertically disposed plate members 80 and 8
  • the plate 321 being f a relatively vlight material is adapted to rest on the upper surface of the pattern member P as it passes over the transverse bar 32
  • 3 passes beneath the pins 325 and 326, it is obvious that thepins 325 and 326 would merely ride on the upper surface of the pattern member'P.
  • is slidably penetrated adjacent each end thereof by a screw 334 and is threadably imbedded in the trans,- verse bar 328 ( Figure 9). It is thus seen .that the transverse bars 328 and 33
  • a pair of arms 336 are adapted to engage the lower surface of the transverse bar 328, adjacent opposite endsV thereof ( Figures 2 and 6) and these arms 336V extend inwardly towards the harness raising jacks 43* andare X- edly mounted, as by set screws 331, on a transverse shaft 340.
  • havevopenings 34
  • the rearmost end of this shaft 346, that is the end observed inv Figures 7 and 8, ⁇ has a dog 341 xedly mounted having an ear 348v integral therewith.
  • the lever arm 350 has a notch 352 therein which is adapted ⁇ to be intermittently engaged by the ear 348 ofthe dog 341.
  • , of the pattern reading unit 326 are in a raised. position, not ⁇ shown,.so that the lower ends of the pins 325 and 326 are also moved upwardly out of engagement with the pattern member P to thus permit a step inthe movement of the pattern member P between the bars 32
  • a forked member 353 is pivotally connected, as at 354 intermediate the ends of the lever arm 350 ( Figures 3, 7,8, 10 and 16).
  • the forked member 353 has a nut 3.55 welded thereto which is adapted to be threadably penetrated by one end of a rod 356 which extends from left to right in Figure 7 and slidably penetrates a bracket .358 secured, as by a. screw 360, to the rear vertical frame member 4IA of the dobby head36.
  • V surrounds the rod 356 and engages the bracket 358 at one end thereof and the other end of the compressionspring 36
  • the sleeve 362 has a rib 364 integral therewith having a the leg
  • of the pattern reading unit 328 ( Figure 6) to move downwardly, by gravity and to, in turn, move the arms 336 in a clockwise direction in Figure 6, at which time the parts would rest in the position shown in Figures 6 and 7 with the exception that the reading fingers 325 and 32,6 may or may not be in the lowered position shown in Figure 6 depending upon whether or not there is one of the perforations 3
  • Pivotally connected to therupper end of the vertical leg
  • the other end of the connecting rod 312 is pivotally connected, as at 315, to the upper end of an oscillatable lever arm 316 oscillatably mounted on a pin 311 projecting from a bracket 380 secured, as by screws 38
  • the free end of the oscillatable lever arm 316 has a cavity 383 therein in which a dog 384 is pivotally mounted, as at 385 ( Figures 3, '7, 8, 1l and 12).
  • a dog 384 is pivotally mounted, as at 385 ( Figures 3, '7, 8, 1l and 12).
  • the free end of the oscillatable lever arm 316 also has a notch 386 therein, in which a compression spring 381 is disposed, the opposite ends of which are mounted on pins 390 and 39
  • the pivoted dog 384 has an ear 392 integral therewith which is adapted to engage the free end of the arm 316 adjacent the cavity 383 as the pivoted dog 384 is urged in a counterclockwise direction in Figure l2 by the compression spring 381.
  • the pivoted dog 384 also has a lower cam surface 393 and a diverging cam surface 394 and these surfaces 393 and 394 are adapted to intermittently engage the ear 348 of the dog 341, in a manner to be later described.
  • the enlarged portions 330 of the pattern reading Vfingers 325 are substantially longer than the portions 330 of the pattern reading fingers 326 in Figure 6.
  • the pattern reading pins 325 and 326 control the position of the dobby hooks 5
  • the upper ends of the enlarged portions 330 of the fingers 325 loosely touch the outer ends of alternately spaced oscillatable ngers 4 00 and the upper ends of the enlarged portions 330 of the fingers 326 loosely touch the upper ends of alternately spaced oscillatable fingers 40
  • ( Figure 6) are oscillatably mounted on the transverse shaft 340 intermediate their ends, and the opposite ends of the same have tension springs 402 connected to the same which extend upwardly and are connected to the ends of bell cranks 404 and 403, respectively.
  • the bell cranks 403 and 404 are oscillatably mounted on a transverse shaft 405 secured at each end thereof to the front and rear vertical frame members 40 and 4
  • the bell cranks 403 and 404 have respective arms 401 and 408, the arm 408 being substantially longerthan the arm 401 and being disposed at a somewhat different angle than the arm 401.
  • the upper free ends of the arms 408 of the bell cranks 404 have sliding movement in the conventional comb member 56 which thereby serves as a guide member for the upper ends of the arms 408 and the arms 408 engage the lower surfaces of the conventional hooks 52.
  • 0 Disposed below the conventional comb member 56' is a comb member 4
  • the arms 401 of the bell cranks 403 extend into the comb 4 0 and have vertical sliding movement in the same and are guided by the same and the upper portion of this comb 4
  • 5 extend upwardly and also have vertical sliding movement in a transverse bar 4 I 6 which is a part of the conventional comb 56 heretofore described.
  • a suitable pattern member P has one end thereof secured to the feed roll 261 and it is then wound about the same, leaving a substantial length of the pattern member P free so that it may be extended over the cylinders 245 and 265 and through the pattern reading unit 320 disposed therebetween and so the other end of the same may be extended downwardly and secured to the takeup roll 210. It has already been described how the pattern member P must be placed on the rollers 245 and 265 in such a manner that the pins 246 and 266 project through the perforations 3 0 adjacent opposite sides of the pattern member P. This is so the pattern will be caused to move when the cylinders 245 and 265 are caused to rotate.
  • may be raised manually to thus move the lower ends of the pattern reading pins 325 and 326 upwardly out of the path of the pattern member P.
  • 22 will have moveolup'- wardly beyond engagement withthe 'corresponding ratchet wheel
  • the pattern-reading -pins 325iand 326 'perform their selectivezoperation onthe-hooks 5
  • the'surfacer393of'the'pivoted dog 384 engages the top surface of the ear 348 of the dog 341 to ⁇ move the-same* downwardly until it haspassed beyoridl thel'limitsf'o'f" th-eear 348 ⁇ which is due to the differentdistances-I from the, ⁇ pivot ⁇ points to the ends of the ⁇ lever arrn316. and the ear 348.v and to-fthereby release -the dog 341 atiwhich'time it A will lagain move upwardly slightly and' the upper end lof the lever arm 350 Iwill have been urged fromright to' left indi-ligure* '7 by the compression! spring 361 and the earv 348lwill-'again' ehgage the notch 3529'in the' lever ⁇ armv 350.
  • willcome to rest as every other notch 212' in l'the' diskf'27 ⁇ l Iris engaged bythe roller 2
  • The: purpose of' the tension springs4 ⁇ 02 in Figurebetween the bell cranks 403" and 434 and thel reading fingers 'and '401, respectively, is to preventbreakage'of' the arms 4.01 and 468er any other interconnected parts, when the dog 341 is moved downwardly in a clockwise'direction in Figure 7 ⁇ which', ofl course; raisesthelower'ends. of the'vpins325l and 326 upwardly” out of engagement with the pattern member P and thus causes the reading fingers 400 and 40
  • bell cranks 403 and 404 Certain of the bell cranks 403 and 404 would be caused to remain stationary, under these circumstances, due to the fact that the associated hooks or 52 may be in engagement with the knives 60 and 6
  • the takeup roll 210 would be rotating in a counterclockwise direction in Figures 4 and 6 to thus cause the pinion 295 to rotate in a counterclockwise direction and permit rotation of the pinion
  • 85 and its associated weight also induce rotation of the pinion 295 as the cable is unwound from the pinion
  • 10 moves upwardly and engages the ear
  • Motion would then be transmitted to the shaft 240, in a counterclockwise direction in Figure 6, rst a half step, then it would resume a iull step with each upward stroke of the pawl
  • a dobby loom having harness jacks and hooks and knives, said hooks being adapted to intermittently engage said knives for operating the harness jacks, a pattern member for controlling the position of said hooks relative to the knives, said pattern member having a plurality of transverse rows of perforations therein, a pair of cylinders over which said pattern member is adapted to pass, shouldered pattern reading pins adapted to engage said pattern member between said cylinders, means for advancing said pattern member past the pattern reading pins in step by step relation, means for intermittently raising and lowering said shouldered pattern reading pins comprising a transverse member in which said pattern reading pins are mounted for vertical sliding movement, an oscillatable shaft mounted in parallel relation to said transverse member, an arm extending from said oscillatable shaft to beneath the transverse member, a dog secured to one end of said oscillatable shaft, a lever arm disposed adjacent one end of said dog, and having a notch therein which is adapted to be intermittently engaged by said dog for causing the free end of said dog
  • the means for moving the notched lever arm comprising an oscillatable lever arm disposed adjacent said dog, said oscillatable arm having a pivoted dog at one end thereof, said pivoted dog having an ear integral therewith and spring means for urging said ear into engagement with the end of the oscillatable lever arm, said firstnamed dog being adapted to be engaged by the pivoted dog as the adjacent end of said oscillatable lever arm moves in one direction and the pivoted dog being prevented from pivoting by its ear engaging the oscillatable lever arm to thus move the free end of the first-named dog downwardly and into engagement with the notched lever arm thereby causing the arm connected to the oscillatable shaft to raise the transverse member in which the pattern pins are mounted and whereby upon movement of the adjacent end of said lever arm in the opposite direction, the pivoted dog will be moved into engagement with the free end of the first-named dog but will be permitted to pass by the same due to the spring means associated therewith.
  • a dobby loom having harnesses and a dobby head thereon and said dobby head having an elongated perforated pattern member and jacks and means responsive to the perforations in the elongated pattern member moving past a predetermined point for moving said jacks to control the raising and lowering of the harnesses
  • means for mounting and driving said pattern member comprising a pair of spaced rotatable shafts disposed on the same horizontal plane, said shafts having cylinders i'lxedly mounted thereon, said pattern member being adapted to pass between the cylinders in one direction
  • means for driving one of the cylinders comprising a sleeve xedly mounted on one end of the associated shaft of said cylinder, a pair of juxtaposed and interconnected ratchet wheels loosely mounted on said sleeve, a disk having spaced arcuate notches in its periphery and being disposed in juxtaposed relation to and also being connected to the ratchet wheels, said disk
  • a dobby loom having harness frames and a dobby frame and knives and dobby hooks for raising and lowering the harness frames and also having a driven rocker arm for imparting movement to the knives and also having an elongated pattern member provided with spaced transverse rows of perforations for controlling the raising and lowering of the harness frames and also having pattern reading pins for each row of perforations, means for withdrawing said reading pins from the path of the pattern and means for simultaneously advancing the pattern in step by step relation so the pattern is advanced the distance of two double transverse rows of the perforations so the pattern pins will engage every other double row of perforations as the'pattern is advanced in one direction, means responsive to movement of certain perforations in said pattern member into register with certain of said pattern reading pins to cause certain of the dobby hooks to be in engagement with the dobby knives while the remaining dobby hooks will be held out of engagement with the dobby knives to thereby control the pattern woven by the loom by causing certain of the harness frames to be raised

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Description

June l0, 1952 J. L. REYNoLDs, sR 2,600,128
PERFORATED PATTERN MECHANISM FOR LOOMS June l0, 1952 l J. REYNOLDS, SR
PERFORATED PATTERN MECHANISM FOR Looms 9 Sheets-Sheet 3 Filed Aug. 5, 1948 June 10, 1952 .1. REYNOLDS, sR
PERFORATED PATTERN MECHANISM FOR LOOMS Filed Aug. 5, 1948 9 Sheets-Sheet 4 ATTUE'NEY June 10, 1952 J. l.. REYNOLDS, sR
PERFORATED PATTERN MECHANISM FOR LOOMS 9 Sheets-Sheet 5 Filed Aug. 5, 1948 me/WLMI r/AME; L. Psv/voos, Se.
June 10, 1952 J. l.. REYNOLDS, sR
PERFORATED PATTERN MECHANISM FOR Loon/1s 9 Sheets-Sheet 6 Filed Aug. 5, 1948 JAMES L. Re
June l0, 1952 J. l.. REYNOLDS, sR
PERFORATED PATTERN MECHANISM FOR LOOMS 9 Sheet s-Sheet 7 Filed Aug. 5, 1948 June l0, 1952 J. REYNOLDS, SR
PERFORATED PATTERN MECHANISM FOR LOOMS 9 Sheets-Sheet 8 Filed Aug. 5, 1948 www Bm, H- VMET A, fw Nwm. hwm, 0mm. D`mlw. o o ooooooo o NSWO oxml/o oooooo o\ d o\@,o ooooo @0K oo oooo oo o oo o nJm. Nmooo o oo wbm, ooo ooo oooo OU ooo oooo ooo ooooo ooo ooo ooo ooo booooomooo\ non m Tm G wv@ me/wm: rJA/wss ,@v/voLos, Se.
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June l0, 1952 J. l.. REYNOLDS, sR
PERFORATED PATTERN MECHANISM FOR LOOMS 9 Sheets-Sheet 9 Filed' Aug. 5, 1948 Patented June 10,A 1952 Charlotte, N. C.
Schwartz Machinery `Golnoratio'ny .1 This invention relates -to la dobby 'leem and more especially r`to'an-improved-pattern mounting *andiimproved means associated Atherewith `for'`cran)lling the mechanism'- of'r a 'conventional (lobby-head.
It is "Well "known toy thnsel familiar `with the art thatcer'tain l'o'oinsfare equipped with'a conventin'al'dbby head' havinga plurality 7`f j acksand index'ngers or hooks, Awhich arecontrol-led by various 4'mi-zians; one of said means` beingA endless :paper patterns punhd'to -eontrol one mechanism'Whi'ch-in'- turn cntrolslv a second 'mechanism to selectively operate the hooks 'andthe jacksfor controlling the harness "mechanism of 4'tl'ie loom.
In the c'asewhere ithfaslbeen necessary-'te repeatia particular pattern manytimes over, 'thereby requiring that'fth'epap'erpatternbe of'con- 'siderable lengthyth'e len'gtlrofthefpattern member hasA been tosuchanextentthatf it 'lias been "necessary tot` provide boxes'or other suitable vc'on- `tainers disposed below' Iand -adjacent the dobby h'as been 'stored as-it'yva's fed Ithrough/the l'pattern contrllingmecna'riisn'i of" theA dobby head.
-Itv is "therefore an object'ofthis inventi-on'to provide a-pair of rolls v'to Which-opposite" ends-of a paper or fabric pattern niemberaresecure'dand between which the' mechanism te befactuated by Athe'pattern member-is'disposed 'andthe pattern member is' rolled 'arund `the f first of theseY rolls 'andiasitlis used, it v'is Wound-about thessecond "oi tleserolls nntil a rprede'termined length of *the pattern has passed throughtheipatternactuating mechanism' for 'the' dobby head. `V`IThe pattern rolls are automatically` reversed in' such la manner that 'thepatternf'may 'be repeated rand this-'continues for as Along-'as the loom is running and '-'tlrus decreases the required length of the -pattern member considerably.
It'isanother"objectof this invention to provide 'apat'tern-'she'et having 'a pluralitynf spaced rows of` transverse perforationstherein, said perforations -being made according tofafdesired pattern,
and to provide means for feeding the perforated pattern`sh`eet through a "mechanism nfor/operatingf certain selected jacks 'in the dobby 'mechanisrrr 'for controlling thev Iharnessmechanisrn of the" loom-andwhereby the pattern" sheetis' fed through this pattern actuating Ameans i'nstep 'by step relation so thateveryaother one of'the rows of\A perforations is movedinto'` alignmenty with" the mechanism for-operating'the'certain jacks of the dobby Yheadand whereby; Whenv Vthepattern' sheet has beenwcompletely used-up from its feeding 'source the mechanism "Willi then reverseautomatically; first moving'oneehalf step andthen rel'suming its full step by step -movementinadirechand side `of Figure {l--A to'fthe left;
tionoppositeto `that in vvv-hichf it 'hadfbefen. p're`` lviously moving,- to'vscan the rows ffperforations missed in the `.first scanning dperation, Vthus re- `-quiring'thatthe pattern sheetneed not' be aslong -aSfit`Would erdinarily -haVeY'tQbe if a reversing yrn'ecfhfanism of the type-described were not"us`d.
Seme ef -the fobjects ofthe nVentiOnfhaviiig been stated, other/objects v Will appear as thetlescription-proceeds, when taken in. connection with -th'e accompanying drawings, in which A-Figure 1 is fa 'schematic e front elevation V'f a ioomhowingtm sobbynea'ti indunted'thien andthe invention associated therezvith;
vin Figure-1;
taken along the line3- 3 Fi'guremz;'l
Figurej- 4vis anjenlarged elevation' looking'ifm the leftahandjs-ide of Figure? tothe righ-tand is ltakenalongfthe -line l-llv in Figure 2;
Figurei-Af is Van Y'extension 'ofi thev lo'wrriglthandportienef- Figure l; 4 Y
fFigure Buis an elevationlooking fronthe 'rightf- -Figure 6 isfanenlarged yertcal sectinal' View taken along `the lines-t5u o f Figure 2'; y y
Figi-1re 7 is Van Y'enlarged elevation 'of the lvver central portionjof Figure and's-hovvingtlie "parts in a'diierent relative position;1 Y v Figure- 8 `is an elevation.similar!to` Figure' 7 fbt showing the parts i'n'gano'ther pesitinandtv'ith seme parts ybeing Ylfiroken away Figure 9 is an enlarged` isometric iiivvvvith fparts section and being taken along" the'line '9-9fin Fg-urex2;
v Figure 1 0 is a sectionalfplan vitv'taln'sbstantially along thev line? lll- Il inlligure'` 8 f Figure 11- is an enlarged'plan-viewvithparts in section and `being takensubstaiitiallylalg the line H-.I I inFig'ure'l;
v Figure' '12'15 an 'enlargedvertieaiiseetinr'view ISV-"l5 anguria in, I
Figure 1,6 is an enlarged planv view with partsin section and being taken vsubst'antiall'ylalngfthe 1in@ 'i6- f6 inFigure'l; n K,
Figure 17 is anV enlarged bl'n l'w with Parts accedas 3 in section and being taken substantially along the line |1|1 in Figure 4;
Figure 18 is an enlarged plan View with parts in section and is taken substantially along the line |8-l8 inFigure 4;
Figure 19 is an enlarged sectional plan view taken substantially along the line |9|9 in Figure 4;
Figure 2O is a view similar to Figure 19 and is taken along the line 20-20 in Fig-ure 3.
Referring more speoically to the drawings, the numerals I and indicate the right and left-hand side frame members of a loom which are connected at their upper ends by a conventional arch connection |2 and are connected at their lower ends by a girt |3. The loom has conventional harnesses |4 mounted therein, the lower ends of which are connected to conventional means, not shown, associated with the loom, and the upper ends of which have the lower ends of conventional harness straps |1 connected to the same which extend upwardly and pass over conventional sheaves rotatably mounted on shafts 22 secured in suitable brackets 24 secured to the arch connection l2 of the loom, in a conventional manner.
A conventional dobby head, broadly designated at 30, is shown in the drawings as being mounted on the right-hand vertical side frame member I0 of the loom. However, it is obvious that this mechanism could be mounted on either side of the loom. This conventional dobby head 38 is mounted on the loom in a conventional manner and is shown in the drawings as being secured to an angle plate 3|, as by screws 32, which, in turn, are secured to the frame member I0, as by screws 33.
The conventional dobby mechnism is also secured to the side frame member l0, as by screws 34, and to one end of the arch connection I2, as by a bolt 35. The dobby head 30 comprises front and rear frame members 40 and 4|, respectively, which support a rod 42 on which are mounted conventional harness lifter jacks 43 to which the upper ends of the harness straps |1 are connected as shown in Figure 1.
Each harness lifter jack has a conventional jack lever 45 (Figure 6) pivotally connected to the same, as at 46, and these jack levers 45 are pivoted as at 41 and 50 to upper and lower dobby hooks 5| and 52, respectively.
Top and bottom cross girts 53 and 54, respectively, serve to limit left-hand motion of the jack levers 45, in Figure 6, thus positioning the harness jacks 43. Top and bottom combs 55 and 58 serve to guide and support their respective hooks 5| and 52 in laterally spaced relation toeach other. When any of the hooks 5| and 52 are in their lowered position, they are adapted to be engaged by upper and lower jack knives 60 and 6|, and the front and rear frame members 40 and 4| each have upper and lower horizontally disposed slots 16 and 11, respectively, in which the opposite ends of the upper and lower knives 60 and 6|, respectively, are mounted for reciprocatory movement. The mode of transmitting this reciprocatory movement is to be presently described.
A conventional rocker shaft 62 is oscillatably mounted in the front and rear dobby frame members 40 and 4|, respectively, and extending outwardly beyond the same and has rocker arms 63 and 84 Xedly mounted at the front and rear ends thereof, respectively. Y
The upper and lower ends of the rocker arms 63 and 64 have conventional connecting rods 65 pivotally connected to the same, the other ends of which are pivotally connected to the ends of the jack knives 60 and 6| for imparting reciprocatory motion to the knives 60 and 6|. The rocker arm 63 in Figures 1 and 4 has an outwardly extending portion 66 integral therewith which has pivotally connected thereto, as at 68, the upper end of a conventional dobby connecting rod 61. Referring to Figure 1, it may be observed that the dobby connecting rod 61 is pivotally connected at its lower end, as at 10, to a conventional dobby crank 1| secured on one end of a conventional pick shaft 12 rotatably mounted in the vertical side frame members |0 and of the loom and having conventional pick cam wheels 13 mounted thereon.
The dobby head is associated with the harness mechanism of the loom'as shown in Figure 1 for controlling the weave of a pattern being woven by the loom. The above described mechanism, which is a conventional part of a dobby loom, has heretofore been operated by various means including control chains and paper or fabric pattern members, and it is the object of this invention to provide a new and improved means for mounting the paper or fabric pattern member as well as an improved means for positioning the hooks 5| and 52 to thereby actuate the desired harness jacks 43 depending upon the nature of the pattern.
Referring to Figures 2, 3, and 4, there may be observed front and rear vertically disposed plates and 8|, respectively, on which the major part of the improved apparatus is mounted. The plate 80 is secured to the front dobby frame member 40 by a bar 83 having an adjustment slot 84 therein which is penetrated by a screw 85 threadably imbedded in the front vertical plate 80 and the plate 80 is cut to conform to the lower right-hand portion of the front dobby member 40, in Figure 4. The bar 83 extends upwardly and is secured, as by a screw 88, to the front vertical frame member 40 of the dobby head 30.
Referring to Figures 3, '1 and 8, it may be observed that the rear vertical plate 8| is cut to conform to the rear dobby frame member 4| and is secured to the same by a plate which is slidably penetratedby screws 9| and 92, the screw 9| being imbedded in the plate 8| and the screw 92 being threadably imbedded in the dobby frame member 4|.
Disposed between the vertically disposed plates 80 and 8| adjacent their outer edges (Figures 2 and 6) are spacer rods 34 and 95, the restricted opposite ends of which penetrate the vertically disposed plates 80 and 8|, and have nuts 96 threadably mounted on the opposite ends thereof to thus secure the plates 8|) and 8| to the opposite ends of the rods 94 and 95 and to thus lend rigidity to the plates 80 and 8|.
The rearxnost rocker 64 has a vertical slot |00 therein in which a pivot member |0| is mounted for vertical adjustment. This pivot member |0| has the right-hand end of a connecting rod |02 pivotally mounted thereon, in Figures 3, 'i' and 8, and has an enlarged portion |03 at the other end thereof having a cavity therein in which the right-hand end of a connecting rod |05 is secured, as by a set screw |06, to thus permit longitudinal adjustment of the combined length of the connecting rods |02 and |05. The left-hand end of the connecting rod |05, in Figures 3, '1 and 8, is pivotally connected as at |08 to the vertical 5 .leg l|01 of an .L-shaped member broadly designated at H0.
The L-shaped .member .is oscillatably mounted on the vertically disposed plate 8| as at I adjacent its lower end, in Figure 3, and has a horizontal leg ||2 integral therewith which has a horizontally disposed slot ||3 therein.
The slot ||3 is slidably penetrated by a pin ||4 projecting rearwardly from an inverted L- shaped member H5. The L-shaped member ||5 is also a vertically movable member and has spaced vertical slots ||1 therein which are slidably penetrated by spaced pins ||6 projecting from the vertically disposed Aplate 8| and being secured therein as by a pressed fit. The .horizontal leg of the inverted L-shaped member ||5 has pivotally mounted thereon, Vas at |20, depending pawl arms |2| and |22. The pawl arm |2| is Vadapted to engage intermittently a ratchet Wheel |23 and the pawl arm |22 is adapted to intermittently engage a ratchet wheel |24.
These depending pawl arms |2| and |122 do not engage their respective ratchet wheels |23 and 24 simultaneously, inasmuch as the pawl arm |2| is adapted to intermittently rotate the ratchet wheel |23 in a counterclockwise direction in Figures 3, '1 and 8 and the pawl arm |22 is adapted to rotate the ratchet wheel |24 in a clockwise direction in Figures 3, '1 and 8. The pawl arms |2| and |22 have downwardly extending fingers |25 and |26, respectively, the proximate surfacesI of which are adapted to be engaged by pins |29 and |30, respectively. The pins |29 and |30 are mounted, as by a pressed t, in a horizontally disposed arm |3| having a slot |32 therein which is slidably penetrated by a pin |33 mounted as by a pressed fit in the vertically disposed plate 8| on which the arm |3| has horizontal sliding movement. The free end of the arm |3| has horizontal sliding movement also on a grooved block |28, secured as by a bolt |34 to the vertically disposed rear plate 8| (Figures 3, 1, 8 and 14) The right-hand end of the arm |3| in Figures 3, '1 and 8 has a vertical slot |35 therein which is slidably penetrated by a pin |36 projecting from a substantially vertically disposed lever arm |31 secured, at its lower end, as by a set screw |40, on one end of a transverse shaft |4|. The shaft |4I is oscillatably mounted in bearing blocks |42 and |43 secured to the front and rear vertically disposed plates 60 and 8|, respectively. The bearing block |42 is secured, as by a bolt |45 (Figures 4 and 18), to the front vertically disposed plate 80 and the bearing block |43 is secured as by screws |46 (Figures 3, 7 and 8) to the rear vertical plate 8 I Referring to Figures 4 and 18, it may be observed that the front end of the oscillatable shaft |4| has an arm |50 securely mounted thereon, as by a set screw |5|, and this arm |50 has the upper end of a link member |52 pivotally connected thereto, as at |53 and the lower end of the connecting link |52 is pivotally connected as at |55 to the left-hand end of an arm |56 in Figures 4 and 17.
The right-hand end of the arm |56 in Figures 4 and 17 has a boss |51 integral therewith which is oscillatably mounted on a pin |60 secured, as by a pressed fit, in the lower end of a vertically disposed plate |6|, the upper end of which is secured, as by screws |62 (Figure 4) to the vertically disposed plate 80. The boss |51 of the arm |56 has secured thereon, as by screws |63. a strap iron member |64 having ears |65 and |66 integral therewith. It is obvious that the ears |655 and .|66 .of the :strap iron member 464 Vmay be cast .integralwith the boss |51., if rso'de'sred. The :ears "|65 `and 4|66 have slots :|61 and y|68 therein,y respectively, 'which are :looselypenetrated bythe right-hand Vand ,left-hand reaches, respectively, of a cable 1| 10.
The upper end of the right-hand reach of 'the `cable |10 is wound :about the -hub of a pinion |15 rotatably mounted on a stub shaft |16 secured ^as .by welding Ito the vertical .plate (Figure 2). The pinion |15 is vprevented from having :endwise movement :on the shaft |1=6 by a collar |:'|1 securely mounted thereon, as by -a The cable 10 is wound about the hub of the pinion and its free end is welded, as at |84- (Figure 2) to the vertical face rof the pinion |15.
'The `right-hand reach of the cable '|10 then extends downwardly from thepinion |15, through the slot |161'in the ear |65 of the member |64, as heretofore described, and has a collar |82 secured thereon, as by a set screw |83'. The cable |10 then extends downwardly and passes beneath a suitablefpulley |85 which is rotatably mounted on a bolt |86 mounted in the upper end of a U-shaped member |81 (Figures 4-A and 5). The U-shaped member |81 is slidably penetrated by a .hook Vmember |90, on which a suitable weight |9| .is mounted. The cable |10 then extends upwardly and has a collar |92 mounted thereon, which vis identical to the collar |82 mounted on the right-hand reach thereof and this collar |92 is secured von the left-hand reach of the cable |10, as by a set screw |93 (Figure 4A).
The cable |10 in Figures 4 and 17 then extends upwardly through the slot |68 in the ear |66 of the member |64, as heretofore described, and its upper end is wound about the hub of a pinion |95 which is identical to the pinion |15 and to which the other free end of the cable |10 is secured in an identical manner. The pinion |95 is rotatably mounted on a stub shaft |96, which isidentical Yto the stub shaft |16, and is also welded to the vertically disposed plate 80. This pinion |95 is also preventedffromendwise movement on the shaft |96 by a collar |91 secured thereon, as by a setscrew 200.
The'ratchet wheels |23 and |24 (Figures 3, '1, 8 and 14) are held integral with each other by suitable dowel pins 2| 0 (Figure 14) which also extend into a disk 2|| having arcuate notches 2 I2 in the periphery thereof. Attention is called to the fact that there are twice as many notches 2 l2 in the periphery of the disk 2| as there are teeth in each ofthe ratchet wheels |23 andv |24 and it is thus seen that with each upward stroke of the pawl arms |2| and |22, the ratchet wheels |23 and |24 will cause the associated disk 2|| to rotate in one direction or the other, a distance equal to the center to center distance between two of the notches 2|2 in the periphery of the disk 2| I.
The notches 2 I2 in the disk 2| are adapted to engaged by a roller 2|5 rotatably mounted on a shoulder bolt 2|6 (Figures 3, '1, 8 and 15) which has its other end xedly mounted in a lever arm 2|1 pivotally secured, as at 220, to the vertically disposed plate 8|. The lever arm 2|1 extends to the right beyond the roller 2|5 in Figures 3, '1 and 8, and has the upper end of a tension spring 22| connected to the same, the lower end of which is connected to a suitable spring perch 22:3 secured to the vertically disposed plate 8|, to thus urge the roller 2|5 into engagement with the notches 2 l2 in the periphery of the disk 2| The purpose of the 'roller 2|5 engaging the notches 2|2 in the disk 2|| is to assist 1n accurately positioning the cylinder and the associated pattern member. to be later described, and to also prevent unintentional rotation of the parts with which the disk 2| I is associated.
It may be observed in Figure 14 that the ratchet wheels |23 and |24 and the disk 2|| are rotatably mounted on a sleeve 238 having an arm 23| integral therewith (Figures 14 and 15). The disk 2l| has spaced projections or ears 232 integral therewith which are threadably penetrated by adjustment screws 233, the proximate ends of which are adapted to alternately engage the arm 23| integral with the sleeve 230. The purpose of this arm 23| will be later described. The outer end of the sleeve 238 has a screw 234 threadably imbedded therein, on which a washer 235 is mounted, and this Washer 235 slidably engages the outer surface of the ratchet wheel |23 to thus confine the ratchet wheels |23 and |24 and the disk 2| on the sleeve 230 against the arm 23|, however, it is obvious that the disk 2|| may have sliding movement against the arm. 23|.
The sleeve 230 is fixedly mounted on the rear end of a shaft 240, as by a set screw 24| (Figurej 14). The shaft 240 is rotatably mounted in bearing blocks 242 secured as by screws 243, to the front and rear vertical plates 88 and 8|. The shaft 248 has a cylinder 245 fixedly mounted thereon, having a plurality of equally and radially disposed spaced pins 246 projecting therefrom and being disposed adjacent opposite edges of the same.
It may be observed in Figure 4 that the front end of the shaft 240 has a pinion 241 xedly mounted thereon which engages a pinion 250. The pinion" 250 is rotatably mounted on a shouldered stubv shaft 25| secured by screws 252 to the vertically disposed front plate 80, and this pinion 250 is prevented from having endwise movement on the shaft 25| by a suitable collar 253 xedly mounted thereon, as by a set screw 254. This pinion 250 also engages a pinion 251 which is identical to the pinion 241 and is fixedly mounted on one end of a shaft 260 rotatably mounted in bearing blocks 26|, secured as by screws 262, to the vertically disposed plates 80 vertically disposed plates 810 and 8| is a second cylinder 265 having a plurality of pins 266 projectingV outwardly therefrom and being equally spaced around the periphery and adjacent eachl end of the same. Disposed below the cylinders 245 and 265 is a feed roll 261 and a take-up rol! 216, respectively. These rolls 261 and 218 are, in this instance, shown to be of wood material and are iixedly mounted on shafts 21| and 21|' (Figures 19 and 20) however it is understood that wood material 'is not mandatory for these rolls.
The shafts 21| and 21| are mounted in identically the samemanner and, consequently, only the shaft 21| on which the roll 261 is mounted 'will be described,` and likeV parts associated with 213 "has a compression spring 215 mounted therein which engages and surrounds, a, restricted portion 216 of the plunger 212, and engages the main portion of the plunger 212. The bore 268 is restricted, as at 269, and the other end of the spring 215 engages the shoulder formed by the restricted portion 269 of the bore 268 to thus urge the plunger 212 from left to right in Figure 14 and to urge the plunger into engagement with the left-hand end of the shaft 21|. The restricted portion of the plunger 212 has a knurled nut 211 threadably mounted on the outer end thereof which may be grasped by an operator and pulled from right to left in Figure 14 to thus release the left-hand end of the shaft 21| for removing the feed roll 261 for ease in mounting thereon the pattern member, to be later described.
The other end-sof the shaft 21|, on which the feed roll 261 is fixedly mounted is fixedly penetrated by a transverse pin 280 projecting from opposite sides thereof. An extension shaft 283 is provided having a cavity 282 therein and being slotted, as at 28|, in one end thereof. The pin 280 is adapted to fit in the slot 28| as the righthand end of the shaft 21| is inserted in the cavity 282 in the extension shaft 283.
The extension shaft 283 is rotatably mounted in a bearing block 285 secured, as by bolts 286, to the vertical plate 8D. This extension shaft 283 has a restricted portion 298 integral therewith on which a pinion 295 (Figures 4 and 19) is mounted and is keyed thereto by a pin 286. The pinion 295 is prevented from having endwise movement on the restricted portion 2930i the extension shaft 283 by a collar 291 secured thereon as by a set screw 306 (Figure 19).
The pinion 295 is adapted to engage the pinio |15 in Figure 4. Referring to Figures 4 and 20, there may be observed the pinion 295' which is identical to the pinion 295 and this pinion 295' is fixedly mounted on the restricted portion 293 of the extension shaft 283' Which is identical to the shaft 283 heretofore described, and this pinion 295 meshes with the pinion |95.
The feed roll 261 has one end of a suitable paper or fabric pattern member indicated at P secured thereto, as by an adhesive or by staples or the like, and the required length of the pattern member P is wound about the feed roll 261 and then extends upwardly in Figure 6 over the cylinders 245 and 265, successively, and this pattern member P has a plurality of spaced perforations 318 adjacent opposite edges thereof which coincide with and are adapted to be engaged by the pins 248 and 286 in the cylinders 245 and 265, respectively.
The pattern member P then extends downwardly from the cylinder 265 and a minor portion of the pattern member P is wound about the roll 218 and its other end is secured to the roll 216, by any suitable means such as an adhesive or staples or the like.
Attention is called to the fact that although the roll 261 is referred to as a feed roll and the roll 218 is referred to as a take-up roll, it is obvious that when the pattern member P has been wound from the roll 261 to the roll 210, and the reversing mechanism has caused the pattern member P to change its direction, in the manner to be later described, the take-up roll 210 would then serve as a feed roll and the present feed roll 261 would serve as a take-up roll.
Referring to Figure 13, it may be observed that the perforations 3|0 adjacent opposite sides of the pattern member Pare in alignment with each other transversely of the pattern member P and there are pairs of transverse parallel rows of perforations 3|2 in alignment with each of the perforations 3|6 on a transverse plane relative to the pattern member P. It will be noted that there are imperforate areas 3|3 between the perforations 3|2 according to the desired pattern to be woven in the fabric.
The pattern reading unit broadly designated at 320 is shown in Figures 2, 3, 6 and 9. This pattern reading unit 328 comprises a lower transverse bar 32| secured, as by screws 322, to the proximate surfaces of the vertically disposed plates 80 and 8| and having a double row of bores 323 therein. The double row of bores 32-3 in the lower bar 32| coincide with each of the double rows of perforations in the pattern member P as the pattern member P is moved in step by step relation through the pattern reading unit 320, and the upper surface of the bar 32| supports the pattern member P as it is moved through the pattern reading unit 328 between the cylinders 245 and 265 (Figure 6).
Whenever perforations 3|2 in the pattern member P are in alignment with corresponding bores 323 in the bar 32|,A corresponding reading pins are adapted to penetrate the corresponding perforations 3| 2 in the pattern member P and to loosely penetrate the corresponding bore 323 in the bar 32|. There are two rows of these pattern reading pins, the pins in one row being indicated at 325 and the pins in the other row being indicated at 326'.
The pins 325 and 326 are mounted for vertical sliding movementin the transverse guide bars 321 and 328 (Figure 9) vand these pins 325 and 326 have enlarged portions 330, which slidably penetrate another transverse guide bar 33|.A The transverse bars 321, 328 and 33|Y are in parallel spaced relation to each other and are mounted for vertical sliding movement 4'at each end thereofV on guide members 332 secured, as by welding, to the proximate surfaces of the vertically disposed plate members 80 and 8| (Figures 2 and 6).
It may be observed in Figures 6 and 9 that the plate 321, being f a relatively vlight material is adapted to rest on the upper surface of the pattern member P as it passes over the transverse bar 32|, to thus serve as a guide member for the pins 325k and 326 and due to the close promixity of the pattern member P tothe plate 321 the plate 321 insures that the pins 325 and 326 will always be properly positioned 4for entering the perforations 3 l 2 in the pattern member P. When an imperforate area 3|3 passes beneath the pins 325 and 326, it is obvious that thepins 325 and 326 would merely ride on the upper surface of the pattern member'P.
The uppermost transverse bar 33| is slidably penetrated adjacent each end thereof by a screw 334 and is threadably imbedded in the trans,- verse bar 328 (Figure 9). It is thus seen .that the transverse bars 328 and 33| will rise and lower, in a manner tovbe later described, simultaneously, and as the transverse bars 328 and 33|r are raised, and inasmuch as the enlarged portion 336 of the pins 325 and 326 form shoulders which rest on the bar 328, the pins 325 and 326 would also be raised whenever the bars 328 and 33|V are raised, by means to be presently described.
The free ends of a pair of arms 336 are adapted to engage the lower surface of the transverse bar 328, adjacent opposite endsV thereof (Figures 2 and 6) and these arms 336V extend inwardly towards the harness raising jacks 43* andare X- edly mounted, as by set screws 331, on a transverse shaft 340. The front and rear dobbyframe members 46 and 4| havevopenings 34| adjacent their lower edges and the transverse shaft 340 extends into these openings 34| and is oscillatably mounted in bearing blocks 342-secured, as vby screws 343, to the vertically disposed plates 86 and 8| (Figures 4 and 7) The rearmost end of this shaft 346, that is the end observed inv Figures 7 and 8,` has a dog 341 xedly mounted having an ear 348v integral therewith. There is mounted adjacent thisL dog 341 a substantially vertically disposed lever arm 356 pivotally secured as at 35|I t0 the vertically-disposed plate 8l'. The lever arm 350 has a notch 352 therein which is adapted` to be intermittently engaged by the ear 348 ofthe dog 341. When the ear 348 is in engagement with the lever arm- 3.58, the plates 328 and 33|, of the pattern reading unit 326, are in a raised. position, not` shown,.so that the lower ends of the pins 325 and 326 are also moved upwardly out of engagement with the pattern member P to thus permit a step inthe movement of the pattern member P between the bars 32| and 321. After astep has been made in the movement of the pattern member P, between the plates v32| and 321, the notched lever arm 350 is caused to move in a clockwise direction in Figures 3 and 8, out of engagement with the dog 341, to the position shown in Figure 7, by means to be presently described'.
A forked member 353 is pivotally connected, as at 354 intermediate the ends of the lever arm 350 (Figures 3, 7,8, 10 and 16). The forked member 353 has a nut 3.55 welded thereto which is adapted to be threadably penetrated by one end of a rod 356 which extends from left to right in Figure 7 and slidably penetrates a bracket .358 secured, as by a. screw 360, to the rear vertical frame member 4IA of the dobby head36.
A compression spring 36|V surrounds the rod 356 and engages the bracket 358 at one end thereof and the other end of the compressionspring 36| engages an adjustable sleeve' 362 secured on the shaft 356, kas by a set screw 363. The sleeve 362 has a rib 364 integral therewith having a the leg |01 of the L-shaped member |I0.
It is thus seen that as the lower end of the rocker 64 moves from left to right in Figures 3, 7 and 8, the free end of the arm 366 will be moved from the positionshovvn in Figure 7 into engagement with the notch 365 in the sleeve 362, as shown in Figures 3, 8 and 10, and would then continue to move from left to right in Figures 3, 7 and 8 to thus move the sleeve and the rod 356 associated therewith from left to right in Figures 3, 7 and 8, and this will cause the lever arm 350 to be moved in a clockwise direction in Figures 3, '7 and 8 to thus release the ear 348 of the dog 341 from engagement with the notch 352 in the upper end of the lever arm 35|).
This allows the transverse bars 328 and 33| of the pattern reading unit 328 (Figure 6) to move downwardly, by gravity and to, in turn, move the arms 336 in a clockwise direction in Figure 6, at which time the parts would rest in the position shown in Figures 6 and 7 with the exception that the reading fingers 325 and 32,6 may or may not be in the lowered position shown in Figure 6 depending upon whether or not there is one of the perforations 3|2 in alignment with each of the reading pins 326 and 325.
Pivotally connected to therupper end of the vertical leg |01 of the L-shaped member H0, as at 310, is a block 31| (Figures 3, 7 and 8) in one end of which one end of a connecting rod 312 is threadably imbedded and has a lock nut 313 thereon to thus lock the end of the connecting rod 312 in the block 31|. The other end of the connecting rod 312 is pivotally connected, as at 315, to the upper end of an oscillatable lever arm 316 oscillatably mounted on a pin 311 projecting from a bracket 380 secured, as by screws 38|, to the rear vertical frame member 4| of the dobby head 30.
The free end of the oscillatable lever arm 316 has a cavity 383 therein in which a dog 384 is pivotally mounted, as at 385 (Figures 3, '7, 8, 1l and 12). Referring to Figure 12, it may be observed that the free end of the oscillatable lever arm 316 also has a notch 386 therein, in which a compression spring 381 is disposed, the opposite ends of which are mounted on pins 390 and 39| secured as by a pressed fit in the oscillatable lever arm' 316 and the dog 384, respectively. The pivoted dog 384 has an ear 392 integral therewith which is adapted to engage the free end of the arm 316 adjacent the cavity 383 as the pivoted dog 384 is urged in a counterclockwise direction in Figure l2 by the compression spring 381. The pivoted dog 384 also has a lower cam surface 393 and a diverging cam surface 394 and these surfaces 393 and 394 are adapted to intermittently engage the ear 348 of the dog 341, in a manner to be later described.
The enlarged portions 330 of the pattern reading Vfingers 325 are substantially longer than the portions 330 of the pattern reading fingers 326 in Figure 6. The pattern reading pins 325 and 326 control the position of the dobby hooks 5| and 52, respectively, through the medium of corresponding interconnected elements which will now be described. The upper ends of the enlarged portions 330 of the fingers 325 loosely touch the outer ends of alternately spaced oscillatable ngers 4 00 and the upper ends of the enlarged portions 330 of the fingers 326 loosely touch the upper ends of alternately spaced oscillatable fingers 40|, which are disposed between the oscillatable fingers 400. The ngers 400 and 40| (Figure 6) are oscillatably mounted on the transverse shaft 340 intermediate their ends, and the opposite ends of the same have tension springs 402 connected to the same which extend upwardly and are connected to the ends of bell cranks 404 and 403, respectively. The bell cranks 403 and 404 are oscillatably mounted on a transverse shaft 405 secured at each end thereof to the front and rear vertical frame members 40 and 4|, respectively, of the dobby head 30.
The bell cranks 403 and 404 have respective arms 401 and 408, the arm 408 being substantially longerthan the arm 401 and being disposed at a somewhat different angle than the arm 401. The upper free ends of the arms 408 of the bell cranks 404 have sliding movement in the conventional comb member 56 which thereby serves as a guide member for the upper ends of the arms 408 and the arms 408 engage the lower surfaces of the conventional hooks 52.
Disposed below the conventional comb member 56'is a comb member 4|0, one end of which is secured to the rear vertical frame member 4| of the dobby head 30 by the same screw 360 that secures the bracket 358 to the same (Figure 7) the other end of the comb member being secured, as by a screw 4| to the lower surface 12 of the front vertically disposed frame member 40 ofthe dobby head 30 (Figure 4).
The arms 401 of the bell cranks 403 extend into the comb 4 0 and have vertical sliding movement in the same and are guided by the same and the upper portion of this comb 4|0 is slidably penetrated by a plurality of vertically disposed rods 4|5, there being one of these vertically disposed rods 4|5 to accommodate each of the arms 401 of the bell cranks 403. These rods 4|5 extend upwardly and also have vertical sliding movement in a transverse bar 4 I 6 which is a part of the conventional comb 56 heretofore described.
These rods 4|5 extend upwardly beyond the bar 4|6 andthe upper ends of the same engage the lower surfaces of the hooks 5| connected to the jack levers 45.
Method of operation In the operation of this apparatus, a suitable pattern member P has one end thereof secured to the feed roll 261 and it is then wound about the same, leaving a substantial length of the pattern member P free so that it may be extended over the cylinders 245 and 265 and through the pattern reading unit 320 disposed therebetween and so the other end of the same may be extended downwardly and secured to the takeup roll 210. It has already been described how the pattern member P must be placed on the rollers 245 and 265 in such a manner that the pins 246 and 266 project through the perforations 3 0 adjacent opposite sides of the pattern member P. This is so the pattern will be caused to move when the cylinders 245 and 265 are caused to rotate.
During the time that the pattern member P is being mounted on the cylinders 245 and 265, in the manner heretofore described, the transverse bars 328 and 33| may be raised manually to thus move the lower ends of the pattern reading pins 325 and 326 upwardly out of the path of the pattern member P.
The loom is then started in a conventional manner and the pick shaft 12 transmits rotation to the dobby crank 61 thereby causing the rockers 64 and 63 to oscillate. With each revolution of the pick shaft 12 two picks will have been woven in the operation of the loom and it is thus seen that when the dobby connecting rod 61 is moved downwardly, the uppermost hook 5| will move from left to right in Figures 1, 4 and 6 to thus move the associated harness jacks 43 inwardly of dobby head 30 and to raise the harnesses I4 connected to the same by the harness straps |1, and as the dobby crank 1| passes through the upper part of its stroke, thus moving the dobby connecting rod 61 upwardly, the knife 60 will move from right to left in Figures 1 and 6 and the lower knife 6| will move from left to right to move any of the hooks 52, which may be in position to be engaged by the same, from left to right to thus actuate the corresponding harness jacks 43 and to thus raise the corresponding harnesses connected thereto by the straps |1. This is a typical operation of a double indexing dobby head.
Now, assuming that the parts are in the position shown in Figure 3, when the loom is started, the knife 6| will move towards the loom or from the position shown in Figure 3 to the right-hand end of the slot 11 in the frame member 4| of the dobby head 30 and the uppermost knife 60 moves outwardly or away from the loom, in the opposite direction. iNow, as the knife 6| moves toward the loom, any of the hooks 52 which may A13 beV in engagement with'thersame are temporarily released' from Vthe 'bottom knife 6 I: and those? in engagement with" the, upper knife 60 are moved from left to right' to thus move 'the 'harness` j acks 43 inwardly and to thereby raise the corresponding harnesses I4.
Now, asv theseA knives-611 and 6| alternately move toward the left hand end of the associated slots 16 and 11`in`Figure 6, the nhooks 5| and-52 are released and certain of thesehooks may be raised upwardly.A out of engagement with the knives ttl` and 6| by the'pattern meansfin the manner Vtovk be presentlyV described. It is obvious that any of these Yhooks or 52 that arel raised upwardly wouldnot bev engagedgby the.V knives 60 or 6| as they move` outwardly away-"from'th'e left-hand'endsY of therslots-161-and111; respectively, andthe corresponding harnessesI I4" wouldremain in their lowermost' position.
Now, as the lower endl' of* the rocker 64,` in Figure 3, moves from left" to right, the vertical leg ||l1 of thelL-shaped'member H also moves from left to right, at' its upper end, to thus' cause the lever arm 316'tolpartiallyrotate in a clockwise direction. Simultaneously-v the arm 366'fenga'ges the rnotch B65-inthe sleeve 362' (FigurestS, Sand to lthus move the substantially vertically disposed lever arm 350-outofengagementwithrthe ear 348" of the dog 341 to thereby releasev thev sameY and to permit the'transversebars 328 and- 33 of the pattern reading unit'32-0 Yto move'Y downwardly, by gravity, as heretofore described;
However, immediatelybefore the ear 348 fof the dog' 341 is'release'd,v in the; manner heretofore described; the pawlfarm' |22 will have moveolup'- wardly beyond engagement withthe 'corresponding ratchet wheel |24 and willfhave` thus transmittedfonestepin the rotationof the cylinders 245 and `-265 in a counterclockwise direction in Figure 6, and the pattern member P willthus remain stationary duringl the time thedog 3-4-1-is out of engagement-with the notch 3-52V inthe lever arm350.` Simultaneously, the pattern-reading -pins 325iand 326 'perform their selectivezoperation onthe-hooks 5|- and 52A in accordance with theY perforations 3 |2- in the pattern' member' P in the manner tobe later described.-
When the dog 341 is released, the -shaft 340,` on which the dog 341 is mounted, will be caused to rotate slightly ina counterclockwise: direction, in Figure '7, andtheY dog- 341 will thus engage thatv portion of the lever arm 35|]V disposed above-the notch-352 and the lever arm will be urged against the ear 348 of the vdog 341 bythe compression spring 36| around the rod 356 (Figure '7).
Now, as the knife 6| moves from right-to;- left in Figures 3, '7 and 8, the L-shapedmember H0 is caused to move about its pivot pointl in a counterclockwise direction which will alsol` move the lever arm 316 ina counterclockwise direction from the position-shown in Figure 8 to thatshown in Figure '7. Assuming that the ear 348 of the dog 341 is out ofengagement with the notch 352 in the lever arm-350, the surface 394v off the pivote'd dog-384 will engage thevear 348'of the'dog 341V and rocker tllthenmovesvfrom left toright at its' lower endVand the vertical leg |01 ofi the L- shaped`V member' 0f isilmoved vvfrom left to'. right at'itsupper' end to vthus move'the. lever-"arm 316 in'. a` clockwise directioniniFigure' '7. Now, as this-arm moves ina clockwise direction, the'surfacer393of'the'pivoted dog 384 engages the top surface of the ear 348 of the dog 341 to` move the-same* downwardly until it haspassed beyoridl thel'limitsf'o'f" th-eear 348` which is due to the differentdistances-I from the,` pivot` points to the ends of the` lever arrn316. and the ear 348.v and to-fthereby release -the dog 341 atiwhich'time it A will lagain move upwardly slightly and' the upper end lof the lever arm 350 Iwill have been urged fromright to' left indi-ligure* '7 by the compression! spring 361 and the earv 348lwill-'again' ehgage the notch 3529'in the' lever` armv 350.
As this dog -341 4is) caused to' move downwardly' at? -its-.right-h'and endl, orin a clockwise direction iri11ig1u`re-"7,4 itfis obvious -that the patternreading unit-320wil1again belraised; infthevmannerk heretofore described) -bythe.V arms 336 thus .moving the pins 325 aridi 32E-out ofthe pathrof the pattern-lmemberfP.
Tliemovementof the free endloftlie leverarm 316 being-muchfaster-tharifthe' movement/of the horizontalleg '|.I2fofthe L--shaped member IIU, the leverl arr'n'l 316- will have raisedL the reading pins 325 and 326i justin time forv the ratchet wheel-f,` I 24? to .be eng-agedbyl the pawl arm |'2 2J to thusfnioveithe shaft" 240'! in 1 a clockwise direction in Y Fig-ure? '7 the equivalent-of! the ycenter'V to center dista-nce between two `of the arcuate notches 2| 2f in the-'disk 2||, or infotherwords, the disk 21| willcome to rest as every other notch 212' in l'the' diskf'27`l Iris engaged bythe roller 2|5. This will cause" the cylinder 245,' inFi'gure- 6; to rotate iriav` counterclockwise direction and to advance'the'pattern member P'pa'st' the lower end' of the reading pins 325andvv 326" the equivalent of two' double'- rowsf o'fperforations 3 2, thus passing*` byevery otherl double row of'- perforations 312 vso that7 tlie'semay'beengaged, ina manner tok be" later:v described,l upony the reverse movement of the-'pattern' member P through the pattern readingunitS'Z 0'.
Now, asth'epins 32'5 (Figure 6)` register with corresponding" perforations 3|2: in the pattern member P theri'ght-hand end of the lingers 403 move downwardly to thus. permitth'e bell crank 433'tolpartiallyro'tate in' a counterclockwise direction and' to' thereby perrrlit` the vertically dispose'dfrods` associatedtherewith to move downwardly and'. to thiis'lowerv thefree ends of the corresponding' ho-oksl` 5|' to' where they may be engaged by' theknife 6'0"'upon its outward stroke. A Thepatte'rn reading pins`32-5, upon registering' with the perforations 3I2A in the` pattern mem-ber P, vallow the free' ends of the pattern reading` iingersf4|l`|`l associated therewith to move downwardly, thereby permitting the .correspondingbellcranks 404'to partially'rotate in a counterclockw'ise direction, inFigure 6, thereby lowering the freeendof the associated hooks 52'to thereby lbe engagedV by the' knife 6| as it moves from left" t'o' right' in'Fi'gure 6'.
The: purpose of' the tension springs4`02 in Figurebetween the bell cranks 403" and 434 and thel reading fingers 'and '401, respectively, is to preventbreakage'of' the arms 4.01 and 468er any other interconnected parts, when the dog 341 is moved downwardly in a clockwise'direction in Figure 7` which', ofl course; raisesthelower'ends. of the'vpins325l and 326 upwardly" out of engagement with the pattern member P and thus causes the reading fingers 400 and 40| to partially rotate in a counterclockwise direction in Figure 6 and thus these tension springs 402 permit certain of the bell cranks 403 and 404 to remain stationary as the left-hand end of the pattern reading fingers 400 and 40| move downwardly in Figure 6.
Certain of the bell cranks 403 and 404 would be caused to remain stationary, under these circumstances, due to the fact that the associated hooks or 52 may be in engagement with the knives 60 and 6|, in their course of travel, and thus could not be raised by the bell cranks 403 and 404.
Attention is called to the fact that the eccentric weight of the pawl arm |22 causes the pawl arm |22 to engage the ratchet wheel |24, in Figure 8, and the pawl arm |2| is prevented from engaging the ratchet wheel |23 by the lpin |29 on the arm |3|. Now, as the pattern member P feeds from the roll 261 to the roll 210 in Figure 6, this causes the pinion y295 to rotate in a counterclockwise direction in Figure 4 to thus rotate the pinion in a clockwise direction and this will cause the cable |10 to wind around the hub of the pinion |15. Simultaneously, the takeup roll 210 would be rotating in a counterclockwise direction in Figures 4 and 6 to thus cause the pinion 295 to rotate in a counterclockwise direction and permit rotation of the pinion |95 in a clockwise direction to thereby permit the cable |10 to be unwound from the same. The pulley |85 and its associated weight also induce rotation of the pinion 295 as the cable is unwound from the pinion |95 and is wound on the pinion |15. As this takes place, the collar |82 on the right-hand reach of the cable |10 moves upwardly and engages the ear |65 of the strap iron member |64 to thus cause the same to partially rotate in a counterclockwise direction in Figure 4. This would cause the arm |56 to move downwardly at its left-hand end in Figure 4 and would cause the shaft |4| to move in a clockwise direction in Figure 4 and in a counterclockwise direction in Figures 3, 'I and 8. Conversely, the collar |92 functions in the same manner as the collar |82 to again reverse the direction of movement of the pattern member P opposite to that which is to be presently described.
Now, as this shaft |4| partially rotates in a counterclockwise direction in Figures 3, 7 and 8, the arm |3| rwould move from right to left in Figure '7 or from the position shown in Figure 8 to the position shown in Figure '1 and the pin |30 would then engage the finger D26 of the pawl arm |22 to move the same to a position where it would not engage the ratchet wheel |24. However, this would also permit the pawl arm |25 to move, by gravity, into a position where it would engage the ratchet wheel |23 on its upward stroke, which `would be transmitted to the same in th-same manner as the upward stroke is transmitted to the pawl arm |22, as heretofore described.
It is thus seen that the pawl arm |2| would then engage the ratchet wheel |23 in such a manner as to `cause the shaft 240 to rotate in a counterclockwise direction as observed in Figures 3, '1 and 8 and to thus transmit rotation to the cylinder 245 in a clockwise direction as observed in Figure 6, to thereby reverse the direction of movement of the pattern member P through the pattern reading unit 320.
It has been previously stated that this shaft 240 rotated in a counterlockwise direction in Figure 6 as the pattern member P was fed from thel roll 261 to the roll 210, and during this time the portion 23| of the sleeve 230 in Figures 14 and 15 will have been in the right-hand dotted line position indicated in Figure l5.
However, when the shaft 240 is caused to reverse its direction as hereinbefore described, the ratchet wheels |23 and |24 and the disk 2|| will partially rotate a distance equivalent to the distance from one of the arcuate notches 2 I2 in the disk 2|| to the center of the next succeeding arcuate notch 2|2, before causing the shaft 240 to turn and at which time the arm 23| of the sleeve 230 would move from the right-hand dotted line position to the left-hand dotted line position shown in Figure 15. Motion would then be transmitted to the shaft 240, in a counterclockwise direction in Figure 6, rst a half step, then it would resume a iull step with each upward stroke of the pawl |2 and it is thus seen that the double rows of periorations 3|2 that lwere not engaged by the lower end of the pattern reading iingers 325 and 326 as the pattern member P advanced from 'right to left in Figure 6, now are caused to register with the pattern reading fingers 325 and 326, upon reverse movement of the pattern member P, while the double rows of perforations 3|2 that registered with the pins 325 and 326 as it moved from right to left in Figure 6 are caused to pass through the pattern reading unit 320 without stopping to register with the pins 325 and 326.
This is necessary due to the fact that the pins 325 and 326 would not transmit the pattern to the harnesses correctly if the same holes were to be penetrated by the pins 325 and 32E upon its reverse movement through the pattern unit 320.
It is thus seen that I have provided an improved means for mounting a perforated pattern member for cooperating with a conventional dobby head whereby the length of the pattern member P may be greatly decreased and whereby I have eliminated the necessity of providing containers or boxes or the like on the floor of a weave shop adjacent the dobby head of a loom for storing a major part of the pattern member P therein while the pattern member P is being fed through a pattern reading mechanism.
In the drawings and specication there has been set forth a preferred embodiment of the invention, and although specific terms are em` ployed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined in the claims.
I claim:
1. In a dobby loom having harness jacks and hooks and knives, said hooks being adapted to intermittently engage said knives for operating the harness jacks, a pattern member for controlling the position of said hooks relative to the knives, said pattern member having a plurality of transverse rows of perforations therein, a pair of cylinders over which said pattern member is adapted to pass, shouldered pattern reading pins adapted to engage said pattern member between said cylinders, means for advancing said pattern member past the pattern reading pins in step by step relation, means for intermittently raising and lowering said shouldered pattern reading pins comprising a transverse member in which said pattern reading pins are mounted for vertical sliding movement, an oscillatable shaft mounted in parallel relation to said transverse member, an arm extending from said oscillatable shaft to beneath the transverse member, a dog secured to one end of said oscillatable shaft, a lever arm disposed adjacent one end of said dog, and having a notch therein which is adapted to be intermittently engaged by said dog for causing the free end of said arm engaging the lower surface of said transverse member to remain in a raised position to thereby hold the pattern reading pins out of engagement with the pattern member, means for moving said notched lever arm out of engagement with the dog to thereby permit the transverse member to move downwardly, by gravity, and to thus raise the free end of said dog and to lower the pins into engagement with the pattern member.
2. In a structure according to claim 1, the means for moving the notched lever arm comprising an oscillatable lever arm disposed adjacent said dog, said oscillatable arm having a pivoted dog at one end thereof, said pivoted dog having an ear integral therewith and spring means for urging said ear into engagement with the end of the oscillatable lever arm, said firstnamed dog being adapted to be engaged by the pivoted dog as the adjacent end of said oscillatable lever arm moves in one direction and the pivoted dog being prevented from pivoting by its ear engaging the oscillatable lever arm to thus move the free end of the first-named dog downwardly and into engagement with the notched lever arm thereby causing the arm connected to the oscillatable shaft to raise the transverse member in which the pattern pins are mounted and whereby upon movement of the adjacent end of said lever arm in the opposite direction, the pivoted dog will be moved into engagement with the free end of the first-named dog but will be permitted to pass by the same due to the spring means associated therewith.
3. In a dobby loom having harnesses and a dobby head thereon and said dobby head having an elongated perforated pattern member and jacks and means responsive to the perforations in the elongated pattern member moving past a predetermined point for moving said jacks to control the raising and lowering of the harnesses, means for mounting and driving said pattern member comprising a pair of spaced rotatable shafts disposed on the same horizontal plane, said shafts having cylinders i'lxedly mounted thereon, said pattern member being adapted to pass between the cylinders in one direction, means for driving one of the cylinders comprising a sleeve xedly mounted on one end of the associated shaft of said cylinder, a pair of juxtaposed and interconnected ratchet wheels loosely mounted on said sleeve, a disk having spaced arcuate notches in its periphery and being disposed in juxtaposed relation to and also being connected to the ratchet wheels, said disk having a pair of spaced ears on the opposite side thereof from the ratchet wheels, said sleeve having an arm integral therewith and extending upwardly between the ears of said disk, a spring pressed roller adapted to engage the arcuate notches in the periphery of the disk, a pair of oscillatably mounted pawl arms disposed adjacent the ratchet wheels. means for transmitting oscillatory movement to the pawl arms, automatic means for holding one of said pawl arms out of engagement with one of the ratchet wheels while the other of the pawl arms is held in engagement with the other of the ratchet wheels, and automatic means for disenaging the second pawl arm from the second ratchet wheel and moving the flrst pawl arm into engagement with the first ratchet wheel simultaneously to transmit reverse rotation to the cylinder on which the pattern member is mounted, said ratchet wheels being adapted to advance the disk and the associated cylinder in one direction so the disk stops as every other arcuate notch is engaged by the spring pressed roller, and whereby when the other of the pawl arms is brought into engagement with the corresponding ratchet wheel, the disk will be caused to move in the opposite direction a distance equal to the center to center distance from one of the arcuate notches to the next before again transmitting step by step movement to the associated cylinder, the length of each step then being the same as they were upon the movement of the cylinder being in its original direction.
4. In a dobby loom having harness frames and a dobby frame and knives and dobby hooks for raising and lowering the harness frames and also having a driven rocker arm for imparting movement to the knives and also having an elongated pattern member provided with spaced transverse rows of perforations for controlling the raising and lowering of the harness frames and also having pattern reading pins for each row of perforations, means for withdrawing said reading pins from the path of the pattern and means for simultaneously advancing the pattern in step by step relation so the pattern is advanced the distance of two double transverse rows of the perforations so the pattern pins will engage every other double row of perforations as the'pattern is advanced in one direction, means responsive to movement of certain perforations in said pattern member into register with certain of said pattern reading pins to cause certain of the dobby hooks to be in engagement with the dobby knives while the remaining dobby hooks will be held out of engagement with the dobby knives to thereby control the pattern woven by the loom by causing certain of the harness frames to be raised while other of the harness frames remain in a lowered position, said means for advancing the pattern member comprising at least one roll rotatably mounted in the dobby frame, a rotatable shaft on which the roll is fixed, at least one ratchet wheel fixed on said shaft, a vertically movable member adjacent said ratchet wheel, a pawl carried by the vertically movable member and adapted to engage the' ratchet wheel, an L-shaped member oscillatably mounted on the dobby frame and connected to one end of the movable member at one end thereof, and a connecting rod connected at one end to the rocker arm and at its other end to the free end of the L-shaped member for oscillating the L-shaped member to, in turn, transmit vertical reciprocatory motion to the movable member for driving the ratchet wheel and the roll.
JAMES L. REYNOLDS, SR.
REFERENCES CITED The following references are of record in the le of this patent:
UNITED STATES PATENTS Number Name Date 691,608 Davenport Jan. 21, 1902 720,869 Wyman Feb. 17, 1903 976,909 Pearsall Nov. 29, 1910 1,892,323 Staubli Dec. 27, 1932
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2856965A (en) * 1957-02-20 1958-10-21 Edwin F Dolbeare Guard for dobby pattern cylinder
US2856966A (en) * 1953-04-27 1958-10-21 Crompton & Knowles Loom Works Pattern mechanism for dobby looms
US3002535A (en) * 1960-04-28 1961-10-03 Crompton & Knowles Corp Pattern reversing mechanisms for dobbies
US3156266A (en) * 1964-11-10 Schwarz
US4403523A (en) * 1981-06-23 1983-09-13 Smith International, Inc. Reversible stepping actuator
US11970797B2 (en) * 2022-06-15 2024-04-30 Alan Wayne Luckey Manually-advanced cylinder, with an adjustable pointer, for continuous tracking of treadling on a weaving draft when weaving with a hand-operated loom

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US691608A (en) * 1901-09-25 1902-01-21 Crompton & Knowles Loom Works Pattern mechanism for looms.
US720869A (en) * 1902-04-26 1903-02-17 Crompton & Knowles Loom Works Dobby mechanism for looms.
US976909A (en) * 1904-03-21 1910-11-29 Matthew J Whittall Jacquard mechanism for looms.
US1892323A (en) * 1929-11-06 1932-12-27 Messrs Gebr Staubli & Co Dobby

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US691608A (en) * 1901-09-25 1902-01-21 Crompton & Knowles Loom Works Pattern mechanism for looms.
US720869A (en) * 1902-04-26 1903-02-17 Crompton & Knowles Loom Works Dobby mechanism for looms.
US976909A (en) * 1904-03-21 1910-11-29 Matthew J Whittall Jacquard mechanism for looms.
US1892323A (en) * 1929-11-06 1932-12-27 Messrs Gebr Staubli & Co Dobby

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156266A (en) * 1964-11-10 Schwarz
US2856966A (en) * 1953-04-27 1958-10-21 Crompton & Knowles Loom Works Pattern mechanism for dobby looms
US2856965A (en) * 1957-02-20 1958-10-21 Edwin F Dolbeare Guard for dobby pattern cylinder
US3002535A (en) * 1960-04-28 1961-10-03 Crompton & Knowles Corp Pattern reversing mechanisms for dobbies
US4403523A (en) * 1981-06-23 1983-09-13 Smith International, Inc. Reversible stepping actuator
US11970797B2 (en) * 2022-06-15 2024-04-30 Alan Wayne Luckey Manually-advanced cylinder, with an adjustable pointer, for continuous tracking of treadling on a weaving draft when weaving with a hand-operated loom

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