US1576706A - Multiplier for looms - Google Patents

Description

March 16 1926. 1,576,706

1.. E. BAGWELL ET AL MULTIPLIER FOR LOOMS Filed July 14, 1924 Patented Mar. 1%, 1926..

UNI-TE s'rars 1,576,706 PTENT OFFICE.

LANDRUM EARL BAG-WELL, OF DRAY'I'ON, AND DAVID C. JONES, 0F GREENVILLE, SOUTH CAROLINA, ASSIGNORS TO GROMPTON 8c KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS,

MULTIPLIER FOR LOOMS.

Application filed July 14-, 192 1. Serial No. 725,773.

ToaZZ whom it may concern:

Be it known that we, LANDRUM'. E. BAG- WELL and DAVID C J ONES, said BAGWELL residing at Drayton, county of Spartanbur State of South Carolina,said J ONES residing at Greenville, county of Greenville, State of South Carolina, citizens of .the United States, have invented a new and useful Multiplier for Looms, of which the following IS a specification. V

This invention relates to patternmechanism for looms and more particularly to multipliers for such mechanism.

In weaving such fabrics as handkerchiefs which have a body of one weave and a border of a second weave, it is desirable to weave the body, which may be a plain weave, with a single bar of pattern chain and the border, which may be fancy, with a comparatlvely short pattern chain controlled by multiplier mechanism. On the so-called double-1ndeX dobby it is possible to weave the body of the fabric with the pattern chain stationary, the chain being started in motion when the border is reached by means of a multiplier or pick counter.

Our invention relates more particularly to a pattern mechanism having multiplying, controlling, counting and drivmg elements 011 the same shaft with the pattern cylinder.

Another object of our invention is to provide a multiplier with a pair of removable discs which may be replaced by other discs of different sizes so that the factor by which the mechanism multiplies may be varied as desired, the motion transmitting device interpo sed between the discs being movable to cooperate with various sizes of dlscs.

A still further object of our invention 18 to provide a convenient hand control for the multiplier by means of which the latter mav be disconnected from the driving portion of the loom and actuated manually.

With these and other objects in view which will appear as the description proceeds, our invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

Referring to the drawings,

Fig. 1 is an end elevation of the lower portion of a dobby having our invention aplied thereto as viewed from the end of the Fig. 2 is a front elevation of the mechanism shown in Fig. 1, the manual controlling device being shown in section,

Fig. 3 is a detailed perspective of the actuator disc and transmitter,

Fig. 1 is a diagrammatic view showing the as hearings to receive shaft 12. The dobby cylinder 13 is fastened to the shaft 12 and is arranged in the present form of the invention to receive a double index dobby pattern chain.

The driving element of the multiplier com prises a sprocket pinion 14: (see Fig. 2) which isfastened by set screw 15 to sleeve 16' extending from a drum 17, the sleeve 16 rotating freely in bearing 18 and being loosely mounted on driving shaft 19 which may extend parallel to the lay of the loom. Located in'the drum 17 is a member 20 which is secured to theshaft 19 by set screw 21' and has pivotally mounted thereon hand operated lever 22 one end of which is normally pushed outwardly by compression spring 23 and the other end of which is provided with a handle 24:. The periphery of the drum 17 is provided with a notch 25 which normally receives a portion of lever 22. During the normal operation of the loom constantly driven mechanism not shown drives pinion 1 1 and through the mechanism described rotates shaft 19 every second pick. 7

As seen in Fig. 2 shaft 19 passes through a bearing 27 and has secured thereto a worm 28 which always meshes with worm gear 29 mounted on shaft 12. As shown in Fig. 5 the hub of the worm gear 29 is extended as at 30 and has secured thereto actuator disc 31. Slidably mounted on shaft 12 is a clutch member 32 having a groove 33 therein to receive the fingers of a clutch arm 34. Lugs 35 extend from the member 32 through a guide 86 fastened to shaft 12 and are as placed as to be movable into operative relationship with lugs 33" formed on wormv gear The multiplying element of the device comprises a multiplying disc 38 provided with teeth 39 which are preferably double the number of the factor by which the irechanism multiplies the rotation of shaft 19. As seen in Fig. 3 the actuating disc 31 is provided with a pair of teeth 40 which extend laterally beyond an annular run ll preferably formed integral with the disc 31. The discs are caused to move in unison periodically by a transmitter l2 mounted on the lower end of an arn adiustably fastened to rod l l fastened to the dobby frame. As shown herein the transmitter is provided with six teeth, alternate teeth being of full width, as indicated at in Fig. 3 and the intermediate teeth being shorter, as indicated at 4:6.

The transmitter and actuating disc are shown in an intermediate position in Fig. 3 where it will be seen that the axis l? of the transmitter is so placed with respect to e shaft 12 that two of the long teet e5 e1 the annular run ll on opposite sides of the axis a"? so as to prevent rotation of the trans mitter in either direction and that one of the shorter teeth l6 extends ino the path of the advancing lug 40. The lugs 40 are spaced far enough apart to receive the long teeth of the transmitter 4-2.

The controlling and counting elements of the multiplier comprise a s )rocket 18 which receives a pattern chain l and is fastened to the multiplying disc 38 so as to rotate therewith. Pivotally mounted on rod a l is a lever 50 the free end of which extends over the chain 4.9 in position to be lifted by a ball 51 on the chain against the action of spring 52 interposed betweena collar 53 on the rod 44 and said lever. Extending upwardly from the lever 50 is an arm 55 having secured thereto a stud 56 movable freely in a slot 57 formed in lever 58 which is pivoted at 59 to an arm 60 adjustably secured to the rod 44. The other end of lever 58 is slotted as at 61 to receive a bolt 62 carried by the clutch arm 34 and by means of which the position of the latter may be adjusted.

Under normal operation, with the hand lever 22 as shown in Fig. 2 and the clutch member 32 disengaged, as shown in Fig. 5, the shaft 19 will rotate once for every second pick of the loom and worm gear 25) with the actuator disc will rotate idly until one of the lugs 40 engages the tooth extending into the path thereof. The transmitter as will then be given a partial rotation and one of the teeth 45 will come between the lugs 40, the teeth of the transmitter l2 at the same time being in mesh with the teeth 39 of the multiplier disc. As the actuator disc 31 continues to rotate the transmitter finishes its motion having passed through ird of a revolution. The motion imto the mu tiplier disc moves the patrain l9 through one space and this on will continue until ball 51 lifts or 50, at which time the latter will be raised to swing the lever 58 in a countercrosswise direction and the clutch arin ell will move the lugs into the path of the AS the worm gear 29 continues to rotate, shaft 12 will move and the ren'iaining bars of the dobby chain will be brought successively to position to weave the border of the fabric. It will be understood that as long as lever 50 is in its lower position the lugs 35 of the clutch member 32 will be out of contact with the lugs so that shaft 12 remains at rest with one o the l ars of the dobby chain under the ling is. This bar may be pegged so as to produce a plain weave.

The actuating disc will continue to rotate and cause the intermittent motion of the multiplier disc so that the multiplier chain will move with the pattern chain. linen the end of the border has been reached, which will be indicated by the lastof the balls 51, the lever 50 will descend and the clutch member 32 will be moved out of driving contact with the worm. gear 29. This change occurs as the bar in which the plain weave is to be produced again comes under the dobby lingers. Thus it will be seen that the disk 38 multiplies the rotation of shaft 19 and the chain ll) counts the multiplications, the product of the factor, in this instance eight, and the number of bars in chain 49 equalling the rotations of shaft 19 vhich occur while the border is being woven.

It will be observed that both actuating and the multiplying discs are readily removable so that the same may be replaced by other discs having a greater or lesser multiplying factor and that the arm 4L3, being adjustably movable about rod at, can be moved so that the transmitter l2 can be properly placed for all sizes of discs.

When it is desired to operate the mechanism by hand the handle 24 of the lever 22, as shown in Fig. 2, will be moved to draw the said lever from notch 25 after which the shaft 19 can be rotated independently of the sprocket 14c and the drum 17. it is desirable to be able to do this where it is neces sary to correct a mispick of the loom.

From the foregoing it will be seen that l: have provided a multiplier having driving, multiplying, counting and controlling elements all on the same shaft and so arranged that the factor by which the multiplying is accomplished may be varied by interchanging the discs and altering the position of the transmitter. Also the device may be disconnected from the loom so as to be operable manually.

Having thus described our invention it will liid be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and we do not Wish to be limited to the details disclosed herein but What we claim is:

1. In pattern mechanism for looms, a pattern chain cylinder, an actuating disc having a regular motion, a multiplying disc, a

transmitter cooperating with the discs to cause both discs to move in unison periodically, mechanism movable to cause the pattern chain cylinder to move with the actuating disc, and means controlled by the multiplier disc to move said mechanism to cause the pattern chain cylinder to move With the actuating disc.

2. In pattern mechanism for looms, a pattern chain cylinder, an actuating disc receiving a regular motion, a'multiplying disc, a transmitter cooperating with the discs to effect temporary joint motion of the discs, means to support said transmitter to permit bodily movement thereof with respect to the discs, and means controlled by the multiplying disc to connect the pattern chain cylinder with the regularly moving actuating disc.

In pattern mechanism torlooms, a pattern chain cylinder, an actuating disc having a regular motion, a multiplying disc movable concentrically with the actuating disc, a pair of lugs extending from the actuating disc, teeth formed on the multiplyling disc, a mutilated pinionhaving certain' teeth longer than others andoperatively associated with the discs and having all the teeth thereof arranged to mesh with the tuati-ng disc periodically to cause a periodic oint movement of the discs in unison.

5. In pattern mechanism for looms, a pattern chain cylmder, an actuating disc having a regular motion, a multiplying disc, a-

transmitter operatively associated with the discs and having a portion always in engagement with the multiplying disc and movable therewith and having another portion normally in engagement with the actuating disc to be held against motion as said actuating disc moves intermittently, said transmitter having other portions to, be engaged by said actuating disc to cause a periodic movement of the transmitter and multiplying disc for each complete movement or the actuating disc, and means associated with the multiplying disc to connect the pattern chain cylinder and actuating disc to cause the same to move in unison.

In testimony whereof we'have hereunto V aifixed our signatures.

LANDRUM EARL BAGWELL, DAVID o. JONES.

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