US891618A - Stop-motion and reversing mechanism of looms. - Google Patents

Description

, No. 891,618. PATENTED JUNE 23 E. HOLLINGWORTH.

STOP MOTION AND REVERSING MEGHAN ISM OP LOOMS.

AlPLIOATION FILED MAY 13. 1904.

4 SHEETSSHEET 1.

1%,. 891,618. PATBNTED JUNB28, 1908.

' E. HOLLINGWORTH.

STOP MOTION AND REVERSING MECHANISM OF LOOMS.

APPLICATION FILED MAY 13. 1904.

4 SEEETS-SHEET 2.

PATENTED JUNE 23, 1908.

E. HOLLINGWORTH. 7 STOP MOTION AND REVERSING MECHANISM OF LOOMS.

APPLIOATION PILED MAY 13, 1904.

. 4 SHBETSSHEET 3 km/0mm Q 96 T A/01,201,4-

No. 891,618. I PATENTED'J'UNE 223 1908. E. HOLLINGWORTH. STOP MOTION AND REVERSING MECHANISM OF LOGMS APPLIGATION TILED MAY 13, 1904.

4 SHEBTS-SHEET UNITED srarns PATENT OFFICE.

jlllMVARli HOLLTNGWORTH. OF DOBCROSS, ENGLAND, ASSTQNOR TO OROMPTON dz KNOWLES l.-OO\1 WORKS, A CORPORATION OF MASSACHUSETTS.

STOP-MOTION AND REVERSING MECHANISM OF LOOMS.

Specification of Letters Patent.

Patented June as, 1908.

Application filed May 13, 1904. Serial No. 207,831.

1/ 0 (171 whom. it may concern:

Be it known that l, EDWARD llOLLING- 'wonrn, a subject of King Edward the ideel'ianism of Looms, of which the following description, in connection with the. accompanying drawings, is a specification.

This invention in or connected with the weft stop mechanism and in the heddle or dobby operating and boxmechanism of looms for weaving. consists, firstly, in providing means to act in conjunction with the weft fork, or weft fork mechanism, for throwing the heddle or dobby operating and box mechanism and picking mechanism out of action or disconnecting them from the loom, immediately the weft fork operates on the failure or absence of weft, apart from the stoppage of th oomby the actuation of the shipper ha le to shift the strap from the fast to the loose pulley, in the usual way, and, secondly .of improvements in means for reversing the loom mechanically in lagging back, either one pick at a time, or any number of picks in succession, by the slightest movement or pressure of the hand and without throwing the least strain on the weaver.

In weft stop motions as at present constituted, the-loom is liable to over-run itself by its own momentmn after the weft fork or fecler mechanism has operated to stop it and, consequently, before the fault can be remedied, the loom may have to be turned back to bring the parts into the position they ought to ori-cupy for the re-introduc- (ion of the pick.

The object of this part of my present invention is to provide, in addition to means for actuating the usual lmock-oll' rod to move the shipper handle to transfer the driving strap from the fast to the loose pulley, novel and ell'ective means for disconnecting or throwing out of action instantaneously on the weft breaking or failing, both the shedding or heddle operating and box mechanism and the that the weaving operation, as regards both the formation or change of shed and move"- ment of the shuttle boxes and the picking of the shuttle, may cease approximately at the same time as the weft fork motion o erates on the failure or breakage of the we 't picking motion, in order elevation, seen from the end of the whereby although the lay may be moved in excess or over-run itself by reason of the momentum of the loom, it will have no effect on the operative parts-of the loom which will be ready for starting again immediately the weft is pieced up, or a fresh supply introduced. I

. My invention further comprises means for mechanically turning back the loom to find broken picks, or for other causes, the object of this part of my invention beingto relieve the weaver of all strain and minimize labor and time in lagging back.

' In the accompanying drawings :-Figure;l is a front elevation of oneside of a loci-1.1 showing a portion of my improvements applied thereto, Fig. 2 l is an end elevation lookin in the direction'of arrow A Fig. 1. Fig. 3 1s an elevation of a portion of the lay and breast beam, showing the-connections from the weft fork motion for actuating. the parts fordisconnecting the picking motion,- and the shedding or heddle operating and box mechanism, on failure or breakage of Weft; Fig. 4 is a plan of Fig. 3. Fig. is an loom, of the picking motion, detached, showing the means I employ for disconnecting the picking motion from the loom on the breakage or failure of weft. Fig. 6 is an elevation of Fig. 5, looking from the rear of the loom, that is, in the direction of arrow B Fig.5 Fig. 7 is a plan of the lever and shoe for actuatm the usual knocking-01f rod. F ig. 8 is an e evation of the clutch box mechanism on the usual vertical shaft which conveys motion to the shedding mechanism, showing the means for unclutehing the clutch nicmhers to dis connect the shedding mechanism from the loom on the breakage or failure of weft; Fig. 9'is a detached elevation showing the application of my improved means for mehanically turning back the loom to find broken picks, the parts being in their normal or inoperative positions, as when the loom is weaving; Fig. l() is a similar elevation to Fig. 9 showing the parts in their operative positions for mechanically reversing the loom: Figs. 3 to' It) are on an enlarged scale.

vReferring to the drawings. and to in this instance, I pivotally connect to the earn slide or cam faced rocking arm 12, a rod or link 13 which receives motion therefrom and whose free end extends through an opening in a lug 14- projecting from a tumbling or" ivoted at 15 on a bracket locking lever 14,

and which 16 bolted to the rout of the lay,

is adapted to be oscillated on its pivot by theengagement of a collar or enlargement 13 on the rod or link 13, with the lug 14, as said rod is moved endwise to the left under the action of the cam slide or cam faced arm 12 which, as is well known to those skilled in the art, has a constant oscillatory motion imparted to it to act on the feeler to feel the illing and, on the absence or breakage of the filling, is locked in the position shown at Fig. 1 by the engagement of the outer end 17 of the feeler with a recess in the cam faced arm or slide 12,-and the motion of the arm 12 arrested.

The cessation of motion of the cam slide or arm 12 brought about by weft breakage or exhaustion, prevents the rod or link 13 from com leting its endwise movement to the left and, consequently, it does not move far enough to brin the collar or enlargement 13 into contact with the lug 14 on the lever 14 which, therefore, remains in its lowest position with its hook shaped end resting on the 1 upper edge of a slide 18 supported and guided in ways in the bracket 16, and moved longitudinally of the lay by means of a radius bar or rod 19 pivotally connected at one end to the slide 18 and at the opposite end to a slide 20'supported by a bracket 21 secured to the breast beam and movable thereon against the tension of a spring 22. 1 I

It will be manifest that so long as the weft is resent or intact, the collar on the rod or lin 1.3 will be brought into abutment with the catch lever 14 at every endwise movement of the rod in that direction, and said lever will be moved on its center to lace the hooked end or catch thereon clear ol a shoulder or projection 18 on the slide 18 this is moved toward the center of the loom on the beat up of the lay, and allow of the full free movement of said slide to the extent determined by the angle of movement of the radius bar 19 whose point of connection with the slide on the breast beam is maintained in a fixed position by the resistance of spring 22 to movement of the slide 20. When, however, the weft breaks or is absent, the locking of the arm 12 by the weft fecler holds the link 13 in inoperative position, whereby the tumbling or catch lever 14- is allowed to remain downand, the lay beats up, the projection 18 on the slide 18 engages Withthe hooked end of said lever and. prevents further movement of said slide,

The locking of the slide 18 causes the thrust of the radius rod 19 to be transferred to the slide 20 on the breast beam, which is forced bodily endwise against the action of the spring 22, a roll 01' stud 23 on said slide, in its outward movement, abutting against a vertical hand lever 24 mounted on a stud on the breast beam and rocking said lever, the lower end thereof riding over an inclined or cam surface 25 on one end of a centrally pivoted lever 25, and moving it upon its ivot center. One end, namely, the inner end of lever 25, is coupled by red 26 to a lever or arm 27 fast on a rock shaft 28 arallel with the picking shaft 5 and supporte in bearings in brackets bolted to the side frame of the loom, the movement of lever 25 through link or rod 26 rocking the'shaft 28 and causing a finger 29 fast thereon to engage a stud or roll 30 on a lever 31 pivoted at 32 to the usual picking arm 33 and to elevate said lever from. the position shown in full line to that shown in dotted line in Fig. 6, thereby removing the catch or foot of said lever out of engagement with a shoulder or offset 34 on a segment or locking device 34 fast on the picking shaft 5, and disconnecting the picking arm or lever 33 from connection with the picking shaft 5,

by which means the picking. motion 15 thrown out of action im-medlately on the weft break-.

ing or failing. The picking arm or lever 33 is mounted loosely on the projecting hubs of the segment or device 34. A spring actuated lever 35 carried by the picking arm 33 bears upon the stud or roll 30 and serves to hold the latch or looking lever 31 in engagement with the shoulder 34 on the segment when in normal position and the loom weaving, and also acts to insure reinstatement of the parts after being moved as described to inoperative position,

The vertical lever 24 is connected by rod or link 36 to a depending lever 36 pivoted on a stud on the breast beam and having an inclined surface thereon which is adapted to engage an inclined or curved surface on a shoe 37 fast on the usual stop rod 3, the actuation of said vertical lever, as before described, drawing the lever 36 in the same direction, and as it rides over the cam or inclined surface on the shoe, the latter is forced back and rocks the rod 3 accordingly to actuate the shipper to transfer the strap from fast to loose pulley and stop the loom. The 0 )positc movement of the other or outer arm of the centrally pivoted lever 25 caused by the engagement of the vertical lever 24 therewith, as previously explained, serves, through link 38 pivotally connected thereto and to one lar groove 45 is the horizontal bar or rod 41 the other or lower c uteh member 45-fast on shaft 11, and enter anr opening it) in the bevel gear to lock tlleshaft l1 and bevel car 10 together, said stud having cut or ormed in one side thereof a. recess or cut out 44 (Fig. 2) having its upper epd suitablyin- .clined. or curved for the purpose hereafter 7 described.

The lower-clutch member 45 has an annu- 1a groove 45 cut or formed therein, to-

Which, when the members 43 and 45 are in clutch, the recess or cut out 44" or upper part of said recess or cut-out in the depending stud, is exposed.

Opposite to or in alinement with the annuwhich is provided with a'laterallyjnclined nose 41 corresponding to the angle of the upper end of the recess 44 and adapted to engage same to elevate" mein er. The second liar 42 is arranged above and parallel to the first named bar and in a position to entel: the space formed between the two clutchanembers when unclutched. Each bar is's'upported and guided horizontally in ways in brackets 46 bolted to the side frame of the loom, and they have confined between shoulders or collars 41, 42 thereon and the enlarged end of the connecting rod 40 through which said head the reduced ends of the bars loosely pass, spiral springs 41", 42 against which the head of rod 40 acts when moved to force the bars 41, 42, endwise in their bearings towards the clutch device, said springs serving to takeup motion or admit of independent movement of the bars.

The

m of the cen- V. .s, through the comprising link at), a horizontal or rods 4], 42, he annular groove in 1e lov c ch member whereby on the depending-st ud 24 on the up per member 43 being brought during the rotation of the clutch box into contact'with said bar, the nose thereof engages the inclined or cam surface at thenpper end of the notch or recess 44 in the stud and forces the stud and upper clutch member into their highest position and out. of engagement with the bevel wheel 10, as shown at Fig. 8, whereupon the heddle or (lobby and box mechan- 5 ism is at once disconnected from the loom the sliding clutch thereofbetwcenthe two clutch members to hold them apart .until the loom is started again, as shown at Fig. 8. v

' A cam ortappet 47 or like device mounted, say, on the crank shaft of the loom, acts through a pivot-ed lever 47 to withdraw the horizontal bar 41, out of engagement with annular groove 45 after the top bar 42 has. moved to its position to hold the clutch members out of gear.

In the'annular groove 45 is secured or formed to the rear of the stud 44, a stop piece 45 (Fig. 2) which engages the bar 41 after the latter has elevated the upper clutch member to its inoperativeposition to prevent further rotation of thejclutches after disengagement with the bevel gear 10. There is also secured or formed on theupper clutch memberf43 an inclined stop piece 43 (Fig. 8) wlmse, rear edge is to be engaged by a hold ing lever 48 when the bevel gear has been disconnected from the vertical shaft, to prevent backward movement of the clutch members.

' So far as I am aware, it is new to combine with aweftstop motion, auxiliary or sup-plenientary' means for self actingly or automatically disconnecting the picking and heddle or dobby operating and box mechanism from-"the loom in addition to stopping the loom itself, and to erform such functions immediately the. fee er acts on detection of the absence or breakage of weft, or on the pick, and it will therefore be understood that I do not confine myself to the details or precise construction of the mechanism herein described or to the connections employed,

or arrangement of the parts, as such connections or parts and their arrangement may be varied 1n many ways to suit the construction oi loom to which the same may he applied,

without departing from the nature and scope of my invention.

For the purposeof mmzhanicallyturning back the loom to find broken picks or for other causes and thus relieve-the weaver of all strain, and minimizelabor anrLtimc in laggingb'ack, I have devised simple means for reversing the motion of the The actuating hand lever 50 (Fig. 1) may com, one pick at a time, or any number of picks in suc-.

'ed at its opposite end to one arm of an angle I lever 54 mounted on a stud secured to a.

bracket bolted to the loom arch or framing of the dobby mechanism To the other arm of the anglelever 54 is pivotally connected a rod or bar 55 su ported vertically in bearings in the loom rame and having its upper end suitably shaped to enter. and engage when elevated into the annular groove 56,

. in a clutch member 56, a recess or cut out 57 in a sliding studor pin carried by the clutch member 56 loose on the shaft 58 of the cylinder gear or heddle operating and box mechanism, and to force said stud or pin outward, the end thereof. abutting against the face of a loose pulley 59 onfwhich is a stud or projection 59"and moving it laterally on its shaftto place said stud or projecting piece 59 out of engagement with or clear 0 the clutch member 56 to disconnectthe parts.

The movement of the rock shaft 51' to elevate' the bar or rodor plunger 55 may be effected b a strong sprmg'GO (Figs. 1 and 2) attache at one end to a strap or flexible connection secured to a boss faston the said shaft and at the opposite end secured to a fixed stud or bracket, the said rod or bar being normally held in such elevated position to maintain the clutch members apart.

. It will beobvious that in place of the spring 60 any other e uivalent means for holding the rod or p unger 55 normally yieldingly elevated may be employed.

When it is desired to 'reverse the loom or to lag back to find a broken pick, or for any other cause, the weaver de resses the oscillatory hand lever 50 by a s ight blow or pressure of the hand, ing shaft 51, and through rod or link 53 and lever 54, drawing down the rod or bar 55 whose upper of the pin or stud 57 and the latter released. As soon as this takes place, a strong spring 61 pressing against the hub or outer face of the pulley 59 acts to force such pulley laterally on its axis, whereby the cutching device or projection 59 enga ement with the opposing recess in the clutc member 56 and the opposite end of the sliding stud 57 placed in the path of a lu 562 on the rear of the near bevel wheel of in; ordinary head motion ear, whereby the pulley 59 and clutch mem or 56 are locked to the shaft 58 and the motion of the loom reversed for one pick. The pulley 59 is driven by astrap from the main driving shaft of the loom and independently of the crank shaft 6.

described may be a tions acting the movement thereof rockend or nose is thus carried clear tion device, whereby,

thereon is broughtinto if the oscillatory handler/M50 is held down instead of being simply struck, the loom will continue its reverse motion for any number of picks until Fnzi'l lever is again released. The moment Lhe lever 50 is ,released, the rod 55 is moved upwardly by the action of the spring 60 and when the in or stud 57 is brought round in the comp etion of a revolution of the clutch members, the nose of said bar again enters the recess or notch 57 and acting against the inclined or curved end thereof, forces the pin or stud endwise. against the pulley 59 laterally on the shaft 58 into its normal or ino erative position.

he head motion gear above referred to, illustrated in Fig. 2, and comprising the shedding or heddle and box operating mechanism, is, or may be, substantially the same as that shown in my Patent No. 469,210, granted Feb. 16, 1892, and in the presentinvention the shaft 58 correspon 13 of the said patent. that the'loom'will be stopped when it may be desired to mechanically reverse the head motion gear, the independently driven ulley 59 is provided; and when the said pu ey is clutchedto or in driving connection withthe shaft. 58 the said shaft will be driven reversely to its normal direction of rotation, for the u ose of reversing the head-motion gear; t e riving shaft 11, for the said head motion (gear, being at this time,

, unclutched or disconnected from its driving bevel gear 10,

The mechanical reversing motion above plied to any existing derstoo and forces it I v date the shaft In view of the fact it will be unlooms of the type ilustrated or looms of similar construction, and may be. employed apart from the means first herein described for disconnecting the heddle and box operating and picking mechanisms, the two moindependently of each other.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 2- 1. In a loom, provided with a weft stop-motiondevice, of a picking motion device, and means, connected with and operated when the latter is operated to stop the loom, the said picking motion device will be automatically disconnected from its operating part.

2. In a loom, the combination with a lay and a weft stop-motion device carried thereby, of a shedding or heddle-operating and box mechanism, a shaft for operating sai mechanism, actuating means for said shaft, a clutch intermediate said shaft and its actuatingmeans, andmeans, connected with 3.111 a loom, the combination with a lay the combination with a lay from said weft stop-moand a weft stop-motion device carried by said lay, of a head-motion gear, and means, connected with and operated from said weft stop-motion device, whereby, when the latter is operated to etc the loom, the said head-motion gear will e automatically disconnected from its operating means 4. In a loom, the combination with a lay provided with a weft stop-motion device, of a picking motion device and a shedding or hcddle-operating and box mechanism, and means, connected with and operated from said weft stop-motion device, whereby, when the latter is operated to stop the loom, the said picking motion device and the said sheddin or hcddle-operating and box mechanism w' be automatically disconnected from their operating arts.

5. In a com, the combination with a lay provide with a weft stop motion device, of a pickeriiiaft, a pickin arm or lever disconnectably vjoined to sai shaft, a-head motion ear com rising parts of a heddle orlsheding mec anism and of a boxmechanism,

means for disconnecting said picking arm or lever from its shaft, means for disconnecthig said head motion gear from lts driving shaft, a: breast beam, means mounted on said breast beam for. controlhng both. of the said disconnecting means, and a radius bar 09hr; v f

necting the said lay with the said controlling -mechanism and having an annular groove therein, a sliding clutch member provided with a dependin stud to clutch the parts together, said stur :having a recess or cut out open to the annular groove when the parts are clutched, a bar rovided with a spring and means for actuating said bar to place the end thereof in the annular groove toengage with the recess or cut out in the stud and elevate seine and the sliding clutch to unclutch the parts, and a second bar provided with spring and actuated byithe'same means as t e first named bar for entering'between the clutch members when unclutched to hold them apart until the connections are, re- 1 stored to normal osition.

In testimony w ereof Iafliapmy signature in presence of two witnesses.

Witnesses:

THOMAS H; Hmsr,

Jenn RJSN LAM.

- EDWARD HOLLINGWORTHQ

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