US1752621A - Loom - Google Patents

Description

LOOM

3 Sheets-Sheet l April l, 1930. J. THEXTON JR., ET AL med Feb, 1, 192s .April l, 1930. 1 THEXTQN JR, ET AL 1,752,621

LOOM

Filed Feb. 1, 1928 3 sheets-sheet 2` lllH HI IHI INVENHzn/S:

M4 my April 1, 1930. J. THExToN JR., Er Al. 1,752,621

LOOM

:5 sheets-sheet :5

Filed Feb. l, 1928 l NvEN-im El M M Jaa/17 MMaAWfMQ/@Mf Patented Apr. 1, 1930 UNITED STATES PATENT GFFICE JOSEPH THEXTON, JR., AND HENRY TOMLINSN, `OF FALL RIVER, MASSACHUSETTS, ASSIGNORS OF ONE-FOURTH' TO JOSEPH E. FREE-LING AND ONE-FOURTH TO FRANK RILEY, BOTH OF FALL RIVER, MASSACHUSETTS LOOM Application filed February alent thereof for roducinU lain weave are idle for certain periods of time due to the fact that an'order for fancy goeds must be run off. Heretofore fancy goo-ds, i. e. cloth having a pattern woven therein has been made on a 5 loom especially adapted for that purpose.

Such a. loom employs several harnesses usually eight to twenty of special make and a complicated harness 'controlling mechanism and is generally used foi' n-o other purpose 9 than to weave fancy goods.

Pattern controlling mechanisms now commonly employed in the textile industry are complicated and therefore relatively expensive and require considerable time in setting f up and making rea'dv for the weavers. Furthermore, they require considerable power for operati-on due to their many parts and complicated construction and their speed is limited with a consequent limited output. 0 They also require considerable attention on the part of the loom fixer and weaver who lin turn are limited as to the number they can take care of, with a consequent high cost in overhead expense. rFurthermore the drawing in operation for these mechanisms which consists of drawing each individual end from the warp supply through the eyes of the harness heddle and reed, must be done by hand, which operation requires considerable time and labor and keeps the overhead cost high.

One object of the present invention is Ato provide simple and relatively inexpensive pattern controlling mechanism for application to a plain loom so that pattern cloth can 5" be woven thereon or the loom may be used for weaving plain cloth.

Another object is to provide mechanism that can be easily and quickly applied to such a loom and taken care of after its application q with a minimum amount of labor.

1, 1928. Serial N0. 251,151.

Another object is to provide mechanism requiring little extra power to operate and capableof a relatively higher speed.

A further object is to provide mechanism which `will require little attentionE from the loom fixer after it is set up and in operation.

A still furthei object is to provide mechanism which will vpermit the drawing-in operation to be done by the warp drawing-in machine.

These and other objects of the invention will be clearly understood from the following description in conjunction with the accompanying drawings, in which;

Fig. l is aside elevation-cfa loom having attached thereto pattern controlling mechanism embodying the invention; the parts be ing shown in operative position.

'Fig 2 is an enlarged vertical section taken on the line 2 2 of Fig. l.

VFig is a viewin perspective ofthe mechanism shown Vin FigJQ'.

Figs. i and 5 are sectional views'itaken on thelines /land 5 5 respective'ly'ofFig. l1.

Fig. 6 is a sectional View taken'on the `linel loom equipped with mechanism "embodying the invention.

"F ig. 8 is a similar view of"nai'row che'ck weave such as diiii'ity.

Fig. 9 is adetail view of the 1p'aftternA chain employed in producing ythe weave shown in Fig. 8.

Fig. l0 is a :diagram of broken stripe weave shown as'dress goods.

ll is a detail view ofthe pattern chain employed in producing the weave Vshown' in Fig. l0.

As herein shown the"patternrcontrolling mechanism-embodying the invention is applied to a plain loom of the two harness' type. Referring to Fig. l of the drawings, atL F is shown one of the side frames of'such a loom whichV is providedl with bearings foiH the crank shaft A20,the cam shaft 21,-the'shaft of spool XV from-which the-warp threadsw are drawn in the process of weaving,'and

lim

the shaft Q3 of the cloth drum R upon which the finished cloth C is wound after passing over the breast beam B. rllhe crank shaft 2O has fixed thereto a pulley 2a by which it is driven from any suitable source of power (not shown). It is provided with cranks which impart an oscillating motion to the lay beam Z carried by the lay swords 2G to which the cranks are connected by intermediate links 527. rlhe lay swords are pivotcd at 301 to the frame of the loom. The cam shaft 2l is driven by the crank shaft 20 which has driving connection therewith by gears S. The takeup motion of the loom, shown at T, is of the intermittent type and comprises a. train of gears g and a ratchet 2S which receives motion from a pawl 2S) carried by an arin pivoted at 3l to the frame and actuated by one of the lay swords 26. The ratchet Q8 is locked against retrograde movement after each action ot the pawl 29 by one arm 32 of a lever 83 pivoted at 3l to the frame, said arni acting as a locking` pawl. This motion draws down the cloth after it is woven and winds it upon the drum R.

The shedding motion of the loom is indicated at M and includes shedding cams, one treadle, front and back harnesses, a coiled spring and a harness roller. The shedding cams indicated at c and c are mounted fast on the cam shaft 2l. The cam 0 operates the treadle t which is pivoted at 34 to the frame. The front and back harnesses are indicated at L and L respectively and are connected at their upper ends to the harness roller a. At its lower end the front harness h is con-v nected to the treadle t. The treadle ordinarily supplied for the rear harness 7i has been removed and the rear harness has been connected to the fioor by a coiled spring 35. As the front harness h is depressed by the eX- tended portion of its cani c, the rear harness VL' is raised thus storing up energy in the spring 35. When the front harness 7L is permitted to rise the rear harness 71, is depressed under the action of the spring 35. In this manner the shed indicated at S is formed which permits the passage therethrough of the shuttle s to lay the weft threads or filling. The shuttle s, actuated by the picking motion (not shown), travels on the lay beam Z' which is actuated by the crank shaft as heretofore described. At r is shown the reed which beats up the last pick of the filling after it has been laid in the shed by the shuttle, the constant repetition of which results in the formation of the cloth.

With the exception of the omission of one treadle and the addition of the spring 35 which connects the rear harness h to the floor, the foregoing mechanism may be of any well known construction as it forms no part of the present invention except in its coinbination therewith to bring about the desired results.

Referring now to Fig. 7 of the drawings there is shown in diagram a fragmentary view of handkerchief cloth as it comes oli' the loom wherein a designates the body portion which is of plain weave, D designates one of the borders lnade by the weft threads or filling and which in this instance comprises a group of eight cords shown at 3G and seven single threads or picks shown at 37. Each cord of this border is made up of three threads or picks and each pair of cords has one of the single threads or picks therebetween. At al is shown one of the herns which is of plain weave and at e one of the so-called severing cords which in this instance is made up of three threads or picks. As is well known to those skilled in the art handkerchief cloth is made up in a large bolt comprising a large number of handkerchiefs and the severing cords are woven into the cloth at predetermined intervals to define the individual handkerchiefs, itbeing only necessary for the handkerchief maker to cut along these lines to divide the cloth into indivdual handkerchiefs which may afterwards be finished up in any well known manner. At l is shown one of the borders made by the warp threads which is similar in construction to the border previously described.

It is with the weaving of the borders Z) and the severing cords e made of the weft threads or filling that the invention is concerned and it is one of the objects of the present invention to provide pattern controlling` mechanism adapted for application to a plain loom of the two harness type and capable of producing the pattern above referred to.

In accordance with the present invention and with particular reference to Figs. l to 3 inclusive of the drawings, at elO is indicated a shaft journalled in bearings l1 secured to a cross member 2 connecting the side frames F of the loom. A portion of this shaft extends outwardly beyond one of the side frames and has secured thereto by a set screw 4:2 a sprocket 43 which engages a chain herein termed the pattern chain. This chain is provided with a series of cams for a purpose to be hereinafter described, and extends upwardly in a plane parallel to the loom frame, and at its upper end runs over a sprocket 45 loosely mounted on a stud 46 which is adjustably secured to a bracket 47 located between said chain and the side frame of the loom. The bracket l? is provided with an elongated slot 48 for the reception of the threaded end portion 49 of the stud 4:6, said stud being fixed in adjusted position by a nut 50. The bracket is itself adjustably secured to the side frame of the loom by a stud 5l the reduced threaded portion 52 of which is received in an elongated slot 53 in the side frame F to which the inner end of the stud is clamped by a nut 54. The stud 5l is provided at its outer end with a reduced threaded portion 55 which is received in the slot of the bracket to which it is clamped by a nut 56. The bracket terminates at its lower end in a fork indicated at 57 which engages the shaft and is held immovably in place thereon between collars 58.

t will thus be seen that adjustment is provided between the side frame ll of the loom and the bracket 47 for the pattern chain7 and furthermore between the bracket 47 and the stud 46 which carries the upper sprocket In this manner various lengths of pattern chains for a wide variety of patterns may be employed.

The pattern chain 44 comprises a series of links for engagement with the sprockets and 45 and is provided on its periphery with knobs or cams arranged in groups and adapied, at certain periods of time during the operation of the loom7 to actuate mechanism to engage the treadle t and restrain the harn nesses. As shown in Figs. l and 3 this mechanism includes an arm having' its npr L end loosely mounted on a stud 6l adjufl secured to an extension 62 on the bracket 4i. The lower end of the arm 60 has attached thereto a wire 63 that is connecten to a belt 64 that passes around pulleys ano is con nected to a wire 66 that is attached to the low er end of a latch 3 pivoted intermediate its ends at 4 to a post 68. The post is ad` ustably secured by bolts 67 to a slotted stand` ard 69 fixed to the floor directly under forward end of the treadle t. T he f iper i of the latch 3 is provided with a hooed to engage a pin 6 on the forwa the treadle when the treadle engagin'. nism is actuated. The hooked end ot latch 3 is released to free the treadle. whe l tn.A treadle engaging mechanism is inopera l by a coiled spring .7 attached at one end te the post and at the other end to the wire 6 shown in Fig. l. i

The arm GO is provided. intermediate its pivot point Gl and its connection with the ileXible member which connects it to the latch 3, with a roller 9 which lies in the path of movement of the cams on t e pattern chain and normally rests against the plain links thereof due to the force exerted by the spring 7 in retracting the connections 63, G4 and 66.

T he cams on the pattern chain are as heretofore stated arranged in groups, and as shown for the particular a ttern illustrated in F ig. 7, comprise a group of eight cams inn dicated at 7,0, a single cam 7l, and another yGroup of eight cams indica-ted at 7" IZ. lietween each pair of cams in the eight-cam groups is a single plain link. Between t1 group 7 0 and the single 7l are three in links indicated at 73, and between the single cam 7l and the next group 72 are five plain iinks indicated at 7 4 and between each group roller 9 of the 60.

of cams to complete the chain are sixrplain links indicated at 75.

The group of eight cams indicated at 70 actuates the treadle engaging mechanism above described to restrain the harnesses while the eight cords 36 of the border shown in Fig. 7 are being laid. The seven plain links in this group permit the treadle engaging mechanism to release the harnesses under the action of the spring 7 at which time the seven single )icl/rs in the border Z) are being laid. As shown in Figs. l and 3 the iirst cam of the group 70 is engaging the rihis action has swung the arm 60 on its pivot to the left as viewed in'Fig. l, causing the arm to exert a pull on the lower end of the latch 3 through the intermediate connections 63, 64 and 66 and force the hooked end 5 of said latch into engagement with the pin 6 on the forward end of the treadle. Atthis time the` harnesses are held in a fixed position thus keeping the shed S in the position shown in F ig. l while the three picks constituting the first cord of border Z) are being laid. The single cam 7l actuates the treadle engaging mechanism in like manner to restrain the harnesses while the severing cord e of three picks is being lait. The next group of eight cams indicated at 72 actuates the treadle enga@ mechanism to restrain the harnesses i the next border (not shown) which is siinilar to border is being laid.

rihe pattern chain 44 is moved to actuate the treadle engaging mechanism by means which will now be described. Secured to the cam shaft 2l for rotation therewith is an eccentric 76 which actuates a pawl 77 having a hook-shaped end c and adjustably secured by a set screw 78 to a projection 79 onl the eccentric strap 80. The pawl 77 overlies a ratchet 81 secured by a set screw 82 to the shaft 40 and is adapted at certain intervals during the operation of the loom to engage the teeth of the ratchet and impart a lpartial rotation to the shaft 40 upon which is mounted the sprocket 43 that drives the pattern chain. It will thus be seen that the pattern chain 44 is moved intermittently by the pawl when the border and severing cords are woven into the cloth.

Means are provided to prevent the shaft 40 from overrunning under the pull exerted by the pawl 77, and as shown in Figs. 2 and 3 said means comprises a wheel 83 fined to said shaft and a flat spring 84 secured to the loom frame. The wheel 83 is provided with flat surfaces m on its periphery corresponding in number to the number of teeth in the ratchet 8l and sprockets 43 and 45', said surfaces being adapted to be engaged one at a time by the free end of the spring 84 as the shaft is given its step by step rotation. In this man'- ner the ratchet is advanced to the extent of only one tooth by each movement .of the pawl,

the spring 84 preventing its further movement by the pressure exerted on its corresponding surface m on the wheel 83.

Vhen plain weave is being made in the cloth, as in the body and hems of the handkerchief, the pawl 77 is disengaged from the ratchet 81 by means which will now be described. Referring to Figs. 1 to G inclusive, at 85 is .shown a 'atchet which is loosely mounted on a stud 80 adjustably secured by a. nut 87 to a bracket 88 which is rigidly fixed to the side frame F of the loom. This ratchet is intermittently rotated by a pawl (see Figs. 1 and 5) which is pivotally mounted on a stud 124 adi ustably secured by nuts 89 to a bracket 90 fixed to the lower end of one of the lay swords 2G. The pawl is held in engagement with the ratchet by a fiat spring 91. Loosely mounted on the stud 8G is a gear 92 which is interlocked with the ratchet for rotation therewith as shown at 93 in Fig. 4. The gear 92 meshes with a gear 94 loosely mounted on a stud 95 rigidly secured to a bracket 9G fixed to the side frame F. Loosely mounted on the stud is a sprocket 11 which is interlocked with the gear 94 for rotation therewith as shown at 97 in Fig. 4. This sprocket engages the forward end of a chain 98, herein termed the multiplier chain, which extends rearwardly in a plane parallel to the loom frame and at its rear end runs over a sprocket 99 loosely mounted on the outer end of the shaft 40, which drives the pattern chain. It comprises a series of links for engagement with the sprockets 11 and 99 and is provided on its periphery with cams arranged at predetermined intervals and adapted to engage a roller 12 on the outer end of a lever 13. The lever 13 (see Figs. 2, 3 and 6) is provided on its inner end with a roller 100 which engages the under side of the pawl 77, and forms supporting means for said pawl during its movement by the eccentric 76. The lever 13 is loosely mounted intermediate its ends on a stud 101 projecting from the frame of the loom and is held in place thereon by nuts 14 which are threaded onto the reduced end portion of said stud. The outer roller 12 is normally held in contact with the periphery of the multiplier chain by a coiled spring 102 (see Fig. 2) which is secured at one end to the outer arm of the lever and at the other end to the loom frame. It will thus he seen that when the roller 12 on the outer arm of the lever 13 is riding on the periphery of the plain links of the multiplier chain, the inner arm will be raised to disengage the pawl 77 from the teeth of the ratchet 81 as shown in Fig. 6. When the outer arm of the lever 13 is raised by the cams on the multiplier chain the inner arm of the lever is depressed, permitting the pawl 77 to engage the ratchet 81 and impartmotion to the shaft The multiplier chain 98 through its cams keeps the pattern chain 44 in motion until the pattern is completed and for the particu lar pattern illustrated in Fig. 7 comprises forty-three links consisting of thirty-two plain links indicated at 15, two links with cams 10 attached thereto, three plain links indicated at 17, one link with a cam 18 atn tached thereto, three more plain links indicated at 19, and two links with cams 103 attached thereto to complete the chain. The cams 1G, 18 and 103 actuate the lever 13 to permit the pawl 77 to engage the ratchet 81 and impart motion to the pattern chain. As

'shown in Figs. 1 and 3 the cams 10 are engaging the roller 12 on the outer end of the lever 13, thus raising that end of the lever. At this time the inner end of the lever is depressed, permitting the pawl 77 to engage the ratchet 81 and drive the shaft 40. This shaft is driving the pattern chain which as heretofore stated is actuating the treadle engaging mechanism to restrain the harnesses while the first cord 36 of the border l) is being laid. The cams 16 are adapted to actuate the lever 13 to permit continuous operation of the pattern chain until the first group of eight.- cams T0 thereon have actuated the trcadle engaging mechanism to rcstrain the harnesses until the border l) is completed. At the completion of the border 7) the Cams 16 will have passed from under the roller 12 and the lever 13 will be actuated by the spring 102 to disengage the pawl 77 from the ratchet 31 thus stopping the pattern chain. On the continued movement of the multiplier chain in the direction of the arrow shown in Fig. 3, the loom will be weaving plain cloth constituting the hem (Z of the handkerchief. This operation takes place during the travel of the three plain links 17 under the roller 12 of the lever. ldlhen the cam 18 engages the roller 12, the lever 13 is again actuated to permit the pawl 77 to engage the ratchet and drive the pat-tern chain, at which time the severing cord is laid. The travel of the next three links 19 in the multiplier chain nermit the weaving of plain cloth which constitutes the hem u of the succeeding handkerchief and the cams 1.03 permit the pawl 77 to again engage the ratchet and drive the pattern chain while the adjacent border (not shown) is put in. The travel of the plain links designated 15 then give the time necessary for the loom to make the body of the handkerchief which is of plain weave, before the cams again aetuate the lever 13 to permit the continuation of the pattern.

As previously stated, the take-up motion,

generally indicated at T in Fig. 1, draws down the cloth after it is woven and winds it upon the drum R. This action must take place after the reed r heats up cach pick of the iilling in the plain weave which constitutes the body and hems of the handkerchief,

but must be stopped temporarily while the cords of the border-sand the severing cords are being laid to make the picks thereof more compact in the finished cloth. Means are provided for checking the take-up motion during this ope-ration, and as shown in Fig. 1, said means comprises a flexible connection indicated at 105, which is secured at one end to the arm 106 of the locking pawl lever 33 and extends downwardly over the shaft 22 of the spool YW, thence over a pulley 10'( and forwardly to its connection at 108 with the lower end of the arm previously referred to for actuating the treadle engaging mechanism. 'le will thus be seen that when the trcadle engaging mechanismis actuated to restrain the harnesses while the cords of the borders and the severing cords are being laid, the-take-np motion will be checked, thus permitting the completed cord to be laid before the cloth is again taken up. llVhen the plain weave of the body and hems of the handkerchief is made, the take-up motion will be permitted to operate as is ordinarily the case after each pick of the filling is laid.

The operation ofthe herein described loom will be apparent fromV the foregoing descripion but may be briefly reviewed as follows:

Vith the loom in operation and the first cord 36. of the border ZJ being laid, the parts will be in the position shown in Figs, 1, 2 and 3, wherein the cams 16 of the multiplier chain 98 are actuating the'lever 13to permit the pawl 77 to engage the ratchet S1 and drive the pattern chain 14. The first cam .70 on the pattern chain iii is actuating the treadle latch mechanism to engage the treadle and restrain the harnesses. This action4 holds the warp threads in the formation of the shed S as shown in Fig.` 1 for the passage of the shuttle in laying the threads of the cord 36. During this operation the takenp motion T has been stopped by the action of the arm 60 and intermediate connection 105 in disconnecting the locking pawl 32 from the ratchet 28. This permits the cord 36 to be completed before the cloth is again taken up which results in more firmly compacting the threads of said cord in the finished cloth. At the completion of the first cord 36 the pattern chain releases the treadle engag-` ing mechanism to permit the laying of the first single thread 37 of the border at which time the takeup motion T is permitted to draw down the cloth and wind it upon the druml. In this manner the entire border is woven, the pattern chain being advanced during this operation in the direction of the arrow shown in Fig. 3 by the action of the pawl 77 which engages the ratchet 81 while the lever 13 is engaged by the cams 16 on the multiplier chain.V After the completion of this border the cams 16 on the multiplier chain release the lever 13 fromV upright pressure on the Vpawl 77 and permits the spring 'permitted to operate.

102 to disengage the pawl 77 from the ratchet 81 (see Fig. 2) At thesame timethe treadle latching mechanism is released, thus freeing the treadle and permitting the harnesses to operate under the action of the cam c and the spring 35 to weave the plain cloth constituting one of the hems d of the handkerchief. During this operation the takeup motion is permitted to operate in the usual manner. The multiplier chain advances in the direction of the arrow shown in Fig. 3 dnring this operation and at the completion of the hem thecam 18 on said chain engages and actuates the lever 13 to permit the pawl 77 to engage the ratchet 81 and again put the pattern chain in motion. During this move-y ment of the pattern chain, the cam 71 thereon actnates the treadle latching mechanism to engage the treadle to restrain the harnesses while t ie severing cord e is being laid, dnring which operation the takeup motion 'is again checked. Thereafter the pawl 77 is disengaged from the racthet 81 by the action of lever 13 when the cam 18 passes out from engagement with the roller 12 during further advance ofthe multiplier chain at which time the hem indicated at u in F ig. 7 is woven, during which operation the takeupmotion is At the completion of thishem the camslOB on the multiplier chain actuate the leverv 13 to permitthe pawl 77 to again put the pattern chain in motion. During this movement of the pattern chain tl ecams '7 2 thereon actnate the treadle engagingr mechanism to restrain the harnesses while the adjacent border is being woven. After the cams 103 pass from engagement with the lever 13 at the completion of this border the harnesses are free to be operated by the cam c and spring 35 to weave the plain cloth constituting the body of the handkerchief, such a portion being indicated at a in F ig. 'i'. It will be understood that the reed 1 is beating up each pick of the plainweave after it is laid and also that the takeup is operating in the usual manner to wind the finished cloth on the drum Referring now to Fig. 8 of the drawings there is shown in diagram a fragmentary view of dimity cloth made in a loom having pattern controlling mechanism embodying the invention attached thereto. This cloth is known as narrow check weave and comprises a series of cords coming off the warp spaced at equidistant short intervals with plain weave therebetween and a filling composed of a series of cords similarly spaced with plain weave therebetween. As Vherein shown 120 designates the warp cords of threey threads each and 121 the cords made of the weft threads or iilling having three picks each. Between each of the cords 121 is plain weave indicated at122v having three picks of filling.. The cords 121 intersect the cords 120 to form narrow checks indicated at 123.,

lVhen narrow check weave such as dimity is made on the loom shown in Fig. 1, the pawl 10 is disengaged from the ratchet 85 and is turned down into the position shown in dotted lines in this figure where it is rigidly secured in place by the nuts 89 on the stud 124, thus eliminating the operation of the multiplier chain 98. The lever 13 is turned up into the position shown in dotted lines in Fig. 2 and securely bolted in that position by the nuts 14 on the stud 101, thus permitting the pawl 77 to engage the ratchet 81 at all times during this operation. The pattern chain 44 is then removed and a pattern chain 130 having a series of cams on its periphery arranged as in Fig. 9 is applied to the sprockets 43 and 45. As herein shown this chain is provided with a cam 131 on every third link, there being two plain links indicated at 132 between each pair of cams. It will thus be seen that a pattern of this type is laid by the action of the cams of the pattern chain 130 on the treadle engaging mechanism, said pattern chain being in continuous step by step rotation under the action of the pawl 77. The take-up motion T is checked while the cords 121 are being laid as in weaving handkerchief cloth.

Referring now to Fig. 10, there is shown in diagram a fragmentary view of brokenstripe cloth made in accordance wit-h the present invention. The stripes indicated at 14() are off the warp and are overlaid or broken by a single pick of the filling at regular intervals. As herein shown every fourth pick 141 of the lilling overlays the stripe while the three picks designated 142 between each pair of picks 141 runs underneath the stripe. The balance of the cloth is made up of plain weave.

When cloth of the above description is woven, the mechanism is arranged the same as for making dimity and a pattern chain similar to the one shown in Fig. 11 is employed. In this case the take-up motion is disconnected from the treadle engaging mechanism so that the cloth is drawn down as it is woven and wound upon the drum R by a continuous step by step movement.

When the loom is to be used for weaving plain cloth it is simply necessary to throw the harness engaging mechanism out of operation by securely lixing the lever 13 in a position to disengage the pawl 77 from the ratchet 81 as shown in Fig. 6, and stop the movement of the multiplier chain 98 by disengaging the pawl 10 from the ratchet 85. The connection 105 between the take-up motion and the treadle engaging mechanism is also released.

Due to the fact that the mechanism hereindescribed is applied to a plain loom in a manner to cooperate with the two harnesses thereon to control the pattern, the drawing-in operation which consists of drawing each individual end from the warp through the eyes of the harness heddle and reed may be performed by a machine known as a drawingin machine. This operation is now done by hand on the looms equipped with pattern controlling mechanisms now in conuuou use.

From the foregoing description it will be seen that a plain loom equipped with pattern controlling mechanism embodying the invention is adapted to weave plain cloth in a inanner and as effectively as if it were without a ttachments. It is also adapted at very short notice to weave pattern cloth of comparatively wide check weave such as handkerchief cloth and the like, narrow check weave such as dimity and the like, and broken-stripe cloth such as dress goods, shirting, etc.

Furthermore the pattern controlling mechanism hereindescribed is comparatively simple and can be made and attached to a loom for about twenty per cent of the cost of similar mechanisms now in common use. Due to its simplicity it requires less attent-ion which results in a saving of labor. As is well known in the textile industry, one fixer now takes care of not over one hundred and twenty looms for weaving plain cloth or sixty looms for weaving pattern cloth. As to power, it takes considerably less with this attachmentapplied to a plain loom, and as to speed the output can be as high as one hundred and eighty picks per minute against a maximum of one hundred and sixty picks with the looms now employed for weaving pattern cloth. As to weaving costs, at the present time one operator runs eight to ten plain looms at a weekly wage of eighteen dollars, or six to eight looms for weaving pattern cloth at a weekly wage of twenty-four dollars. lith this attachment on a plain loom one operator could handle from eight to ten looms for weaving pattern cloth at a weekly wage of eighteen dollars.

It will thus be seen that the output per operator is greater and the cost in wages less than for previous methods of weaving pattern cloth. Furthermore, the mechanism hereindescribed may be attached to as many plain looms in a mill as is desirable without interfering with the weaving of plain cloth thereon, or without requiring extra 'Hoor space as is the case where pattern controlling meehanisms now employed are attached to special looms adapted for the sole purpose of weaving pattern cloth.

The foregoing advantages therefore result particularly in a lower first cost, less power consumed, lower labor costs, increased pro` duction and a saving in floor area.

We claim:

1. In, combination with a loom for weaving plain cloth, an attachment for said loom comprising a pattern-controlling chain and a pair of sprockets therefor. shafts ou which said sprockets are mounted, a series of cams mounted on said chain raranged in predetermeans whereby said shaft drives said cam carrier, a series of cams mounted on said carrier and means actuated by said cams `to restr in the harnesses for predetermined intervalsof time while the weft threads con- `tinue to be laid and thereby control the number ofthreads in a cord in the pattern, said rcstraining means comprising Ian arm, a support to which one end of said arm is pivoted, a flexible member connected to the other end of said arm, a guide around which said flexible member passes, a latch to which the other Vend of said flexible member is connected, said latch being provided with a hook adapted to engage the harness treadle to restraint-he movement of the harnesses.

3. In combination with a loom. adapted to weave plain cloth, anattachment'for-the loom comprising a rotary shaft, a cam carrier, a series of cams mounted on said carrier and Vmeans actuated byV said cams Vto restrain the harnesses for predetermined intervals of'time While the weft threads continue to be laid and thereby control the number of threads in a cord in the pattern, said restraining` means comprising an arm, a support to which one end of said arm is pivoted, a belt, the other end 'of said arm beingconnected to one end of said belt, a guide around whichsaid belt passes, a latch to 4which the other endofsaid beltis connected, a harness andrtreadle, said latch being adapted to engageV the harness treadle to restrainthe movement of the harnesses, and means which are operative to release the saidllatch from the harness treadle when the cam on the pattern chain is disengaged from said arm.

4. In combination with a loom adapted to weave plaincloth, an attachment for the loom comprising a rotary shaft, a cam carrier, meanswhereby .said shaft drives said carrier, aseries of cams mounted on said carrier and means actuated by said cams to restrain the harnessesfor predetermined intervals of time while the `weft threads continue whichonefendl of said arm, is pivoted, a belt, the other end; of, said armrbeing connected to one endete-said belt;agu1de around which said belt passes, a latch to which the Vother end of said belt is connected, a harness and treadle, said latch being adapted to engage the harness treadle to restrain the movement of the harnesse-s, said pivoted arm having a member in position adapted to be engaged by the several cams on said cam carrier to rock said arm and actuate the intermediate connections whereby the rocking of said arm will cause the latch to make locking engages ment with the treadle.

5. In combination with a loom adapted to weave plain cloth having harnesses, an attachment for the loom whereby it is adapted to weave checks or broken stripes, said attachment comprising a rotary shaft, a sprocket made fast thereto, a second sprocket, a pattern chain in operative engagement with both of said sprockets, a series of cams mounted on said chain and means actuated by said cams to restrain the harnesses for predetermined intervals of time while theweft threads continue to be laid and thereby control the numbe `of threads in a cord in the pattern and means for intermittently actuating the pattern chain, said means comprising a ratchet mounted on the shaft which carriesfthe fixed sprocket, a feed pawl engaging with said ratchet, a rotary cam shaft, shedding cams mounted thereon and an eccentric mounted on the said cam shaft. Y

6.111 combination with a loom adapted to weave plain cloth, an attachment for the loom comprising al rotary shaft, a sprocket made fastthereto, a second sprocket,a pattern chain in operative engagement with both of said sprockets, a series of cams mounted onsaid chain and means actuated by said cams to restrain thelharnesses for ypredetermined intervalsl of time while the weft threads continue'to be laid and thereby control the number of threads in a cord in the pattern, means for intermittently actuating the pattern chain, said means comprising a ratchet mounted on the shaft which carries the fixed Yfixed sprocket and ratchet, said means consisting of a wheelmonnted fastV on said shaft, said wheel having flat faces on its 'periphery and a spring brake which engages said flat faces.

7. In combination with a loom adapted to Weave plain cloth having harnesses, aA harness treadle` andy a cam shaft with 'a cam adaptedl toactuate the harness treadle, an attachment for-theloom whereby it is adapted to Weave checks or broken stripes, said attachment comprising a rotary shaft, a sprocket made fast thereto, a second sprocket, a pattern chain in operative engagement with both of-said sprockets, a seriesofoams mounted on said chain and means actuated by said cams to restrain the harnesses for predetermined inter-falso'l time while the vfelt threads continue to be laid and thereby control he number of threads in a cord in the pattern,

means for interniittently actuating the pattern chain, said means comprising said cam shaft, a ratchet mounted on the shait which carries the fixed sprocket, a feed pawl engaging with said ratchet and an eccentric mounted on the said cam shaft, means for disengaging the feed pawl from said ratchet, said means comprising lay swords, a ratchet loosely mounted on a stud and a pawl pivotally mounted on a member projecting from one of the said lay swords, a sprocket, a multiplier chain which at one end engages with said sprocket and has driving connection with said last named ratchet, a series of cams carried by said multiplier chain at predetermined intervals which are adapted to en gage one end of a lever, said lever being pivoted intermediate its ends, the other end of said lever engaging the pawl which actuates the pattern chain feed, said lever normally holding the feed pawl out of engagement with the feed ratchet and cams on said multiplier chain which are adapted to tip said lever and permit the pawl which actuates the pattern chain to engage the driving ratchet of the pattern chain.

8. In combination with a loom adapted to weave plain cloth, an attachment for the loom whereby it is adapted to weave checks or broken stripes, said attachment comprising a rotary shaft, a sprocket made fast thereto, a second sprocket, a pattern chain in operative engagement with both of said sprockets, a series of cams mounted on said chain and means actuated by said cams to restrain the harnesses for predetermined intervals of time while the weft threads continue to be laid and thereby control the number of threads in a cord in the pattern, means for intermittently actuating the pattern chain, said means comprising a shaft, a cam carried by said shaft adapted to actuate the harness treadle, a ratchet mounted on the shaft which carries the fixed sprocket of the pattern chain, a feed pawl engaging with said ratchet and an eccentric mounted on the said cam shaft, means for disengaging the pattern chain feed pawl from its ratchet, said means comprising lay swords, a ratchet loosely mounted on a stud and a pawl pivotally mounted on a member projecting from one of the lay swords, a sprocket mounted on a stud carried by the frame, said last named ratchet having driving connection with said sprocket, a multiplier chain engaging said sprocket and a sprocket mounted on the shaft that drives the pattern chain, a lever pivoted intermediate its ends, a series of cams carried by said multiplier chain at predetermined intervals which are adapted to engage one arm of said lever, the other arm of said lever engaging the pawl which actuates the pattern chain feed, whereby when one of the cams on the multiplier chain engages the said lever it will tip the lever thereby permitting the pawl to engage with the feed ratchet and feed the pattern chain and means whereby when the said cam is disengaged from the said lever, said lever will be tipped in the reverse direction and disengage the driving pawl from the pattern chain driving ratchet.

9. In a two harness loom having a cloth take-up motion including a ratchet and pawl feed, a treadle to operate the harnesses, a take-up feed, a feed ratchet, a pivoted arm and means connected therewith for locking the treadle at predetermined times and means for suspending the cloth take-up motion while the treadle is locked during the laying of a plurality of picks, said means comprising a lever, a locking pawl carried thereby adapted to engage with said feed ratchet to restrain the movement of the take-up feed, and a flexible member connected at one end with one arm of said locking pawl lever, said flexible member being connected at its other end with said pivoted arm of the harness restraining mechanism.

10. In combination with a loom adapted to weave plain cloth, an attachment for the loom comprising a rotary shaft, a cam carrier, means whereby said shaft drives said cam carrier, a series of cams mounted on said carrier and means actuated by said cams to restrain the harnesses for predetermined intervals of time while the weft threads continue to be laid and thereby control the num ber of threads in a cord in the pattern, an arm pivoted at one end to a support, a flexible member connected to the other end of said arm and means connected with said flexible member adapted to restrain the movement of the harnesses.

11. In combination with a loom adapted to weave plain cloth, a carrier on which are mounted a plurality of cams, means actuated by said cams for restraining the movement of the harnesses for predetermined intervals while the weft threads continue to be laid and thereby control the number of threads in a cord in the pattern, said restraining means comprising an arm pivoted to a support, a flexible member connected at one end to said arm, the other end of said flexible member being connected to a latch adapted to restrain the treadle and means which are rendered operative to release the latch from the treadle when the cam carrier is disengaged from said arm.

12. In combination with a loom adapted to weave plain cloth, a carrier on which are mounted a plurality of cams, means actuated by said cams for restraining the movement of the harnesses for predetermined intervals while the weft threads continue to be laid and thereby control the number of threads in a cord in the pattern said restraining means comprising an arm pivoted to a support, a flexible member connected at one end to said arm, the other end of said flexible member being connected to a latch adapted to restrain the treadle, means which are rendered operative to release the latch from the treadle when the cam carrier is disengaged from said arm, and means carried by said pvoted arm adapted to be actuated by said cams to cause the latch to make locking engagement with the treadle.

In testimony whereof We affix our signatures.

JOSEPH THEXTON, JR. HENRY TOMLINSON.

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