US1377390A - Loom - Google Patents

Description

J. C. BROOKS.

LOOM.

I APPLICATION FILED FEB. 28, 1920- 1,377,390. ed May 10, 1921.

3 SHEETS-SHEET 1.

IhVen'ror. John C. BrooKs bym wkfiwjf At tys.

J. C. BROOKS.

LOOM.

APPLlCATlON FILED FEB. 28,1920.

Patented May 10, 1921.

3 SHEETS-SHEET 2- Inventor. John C. Brooks. by MMQW Artys.

1. 0 BROOKS.

LOOM.

APPLICATION FILED FEB. 28, 1920.

1,377,390. Patented May 10, 1921.

3 SHEETS-SHEET 3- InQeTOr. John C. Brooks.

ATTys ing my improvements a the left;

UNITED STATES PATENT OFFICE.

JOHN C. BROOKS, OF PATERSON, NEW JERSEY.

LOOM- Application filed February 28, 1920. Serial No. 361,967.

To' all whom it may concern:

Be it known that I, JOHN C. BROOKS, a citizen of the United States, residing at Paterson, in the county of Passaic, State of New Jersey, have invented newand useful Improvements in Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This application is a continuation in part of my co-pending application filed April 23, 1919, Ser. No.j292,121.

This invention relates to looms of that class in which the weft thread is laid within the warp sheds by means of an air blast, thus obviating'the use of a shuttle,-and it has particular reference to the means for drawing off lengthsof weft from the source of supply and delivering said lengths to the action of the air blast.

One of the objects of my present invention is to provide a construction by which a plurality of separate weft threads may be se lectively manipulated so that at any pick any one of the individual weft threads may be inserted. Another object of my invention is to provide a novel arrangement of weft puller for drawing off definite lengths of weft from the source of supply and then releasing said lengths so that the released lengths may be blown into the warp shed by the air blast. I 4

In order to give an understanding of my invention, I have illustrated in the drawings a selected embodiment thereof, which w1ll now be described, after which the novel features will be pointed out in the appended claims. 7

Figure 1 of the drawings is a front view of a portion of one end of a loom frame showlied thereto; 2 is a side view 0 Fig. 1 looking from Fig. 3 is a detail view of the weft controlling device looking from the right,

Fig. 1;

Fig. 4 is a detail view showing the operation of the weft positioning members.

1 indicates a portion of a loom frame which may have any suitable or usual construction, 3 indicates the usual lay carried by the lay swords 2 and having the hand rail 4, 5 indicates the crank shaft from which the lay is operated, 6 indicates the usual cam Specification of Letters Patent.

shaft that controlsthe harness mechanism of the loom, 7 indicates the sand roll situated at the front of the loom, and 8 indicates the gear from which the sand roll is driven.

These parts are or may be all as usual in looms and form no part of my present in vention.

The lay 3 has mounted thereon at one end thereof a nozzle 87 through which the air blast 1s delivered for blowing lengths of weft across the warp sheds. This nozzle is shown as being provided with two weft inlets 88, 89 through which weft threads 95 and 94 are led, said weft threads being delivered from the end of the nozzle. The nozzle is connected to an air pipe 90 constructed to deliver an air blast therethrough. This nozzle is supported by brackets 84, 85, and the weft threads are led to the weft inlets through a weft guide 93 on the loom frame and other guides 91, 92 on the lay.

My present invention relates to novel means for drawing off from a source of supply a length of either weft thread, 94 or 95 suflicient to extend across the shed, and then releasing said length so that when the air blast operates, the released length will be blown through the nozzle and across the shed.

This means for drawing ofi lengths of weft thread is in the form of an endless length. This endless chain device is shown at 22 and it is supported by a frame or guideway 11, 12 that is secured to one side of the loom by means of brackets 9, 10. This guideway 11, 12 comprises 'two separated side pieces forming between them a track through which one run of the endless chain 22 passes and by which it is guided. This chain passes over sprocket wheels 19 and 20 which are mounted on shafts 17 and 18 that are supported in brackets or arms 15 and 16 extending from the guideway 11, 12. A sprocket chain also passes around. a driving sprocket wheel 21 which is fast on the crank shaft 5. With this arrangement one run of the sprocket chain will have a vertical direction and extend through the guideway ll, 12.

shown, in the drawings, which weft-pulling device comprises a block 23 secured to the chain and having a plate 24 ri id therewith, from which extends a slotte arm 25. A lever 26 is pivoted to this arm and carries at its free end a laterally extending pin 27 which constitutes a weft-pulling member. The arm 25 also carries a fixed plate 128 having an opening through which the weftpulling pin 27 rojects. The lever 26 is acted on by a spring 29 which tends to hold it in its forward position with the pin 27. projecting through the opening in the plate 128. This is the normal position of the arts.

The weft threads 94 and 95 are positioned by suitable weft-positioning means, hereinafter referred to, closely ad acent the guideway 11, 12, so that as the weft-puller is moved downwardly by the sprocket chain, it will engage one of the weft threads and thereby draw a len h from the source of supply 96 or 97. eans are also provided for causing the weft-pulling pin to release its engagement with the weft thread after a predetermined length has been drawn from the source of supp For this purpose the lever 26 is provided with two cam lugs 28 and the guideway ll, 12 is provided with stationary cams 31 situated to engage the cam lugs 28 as the weft uller moves downwardly. When the cam 28 engage the cams 31, the lever 26 i 1 be swung backwardly, thus withdrawing the weft-pulling pin 27 from engagement with the weft thread, the guard plate 128 serving to hold the weft thread from .movement as the weft puller swings backwardly. As soon as the weft puller has released the weft, then the len h of the latter which has been drawn 0 is free to 13 drawn through the warp sheds by the air ast. The length of weft which is drawn off at each operation is determined by the position of the cams 31.

Since the chain 22 is driven from the crank shaft of the loom it will operate in timed relation with the lay, and by placing the weft-pulling devices at proper locations on the chain, the separate lengths of weft will be pulled off in proper timed relations I with the other operations of the loom.

My invention also contemplates means for controllin the separate weft threads and manipulating them so that either weft thread may be brought into position to be actuated by the weft-pulling device. The weft threads, 94, 95 pass from the sources of supply 96 97 through eyes in the weft-guiding arm 4 carried by the frame, 11, 12. The weft 94 passes from the arm 74 through eyes in two separated weft-positioning arms 35 that are fast on a rock shaft 34 which is journaled in brackets 32, 33 carried by the to each other, as shown plainly in Figs. 2-

and 4. The weft-positioning arms of each pair are situated on opposite sides of the, path of movement to the weft-pulling pm 27, and the portion of the weft which extends from one weft-positioning arm to the other of the pair of arms that are in horizontal position is placed roperly so as'to be engaged by the weft-pullmg pin 27. On the other hand, the weft which is carried by the weft-positioning arms that have the inclined position is placed out of the path of the weft pulling pin and is not actuated thereby.

Means are provided for rocking the shaft 34 so as to carry either pair of weft-positioning arms into horizontal position accord.- ing to the pattern which it is desired to'produce in the cloth.

The rock shaft 34 has a segmental gear 38 fast thereon which meshes with a gear 40 fast on the rock shaft 39 that is journaled in the brackets 32, 33. This shaft 39 has an arm 41 fast thereon which carries two laterally extending pins 42, 43.

The frame 11, -12 has a bracket 50 to which is secured two guideways 51 in which a plate 52 is vertically slidable. This plate 52 has a clip or guide 54 in which is slidably mounted a horizontally extending member 53, the latter carrying at its end a head .55

to which is pivoted two arms 56, 57. These.

arms are connected by a spring, 59 which tends to hold them against the steps 58.

The member 53 is connected by a link 60 to a lever 61 which is pivoted at 62 to the loom frame. The lower end 63 of said lever is actuated by a cam 64 carried on a ,cam shaft 6. But by means of these connections the head 55 will be constantly moving to and fro in a horizontal direction.

Suitable pattern controlled means are provided for shifting the plate 52 vertically 43, to a position in which the arm 56 isin a position to engage the pin 42. Pivoted to the bracket 50 is a lever 71 which carries a pin 72 adapted to engage a depending projection extending from the plate 52. This lever 71 has a cam nose 73 which is adapted to be engaged by a cam link carried by a fromthe osition shown in Fig. 3, in which the arm 5 is in position to engage the pin in this position the arm 57 is in line with the pin 43. \Vhenever a cam link comes under the cam nose 73, then the lever 71 will be raised, thus elevating the plate 52 and carr ing the arm 56 into line with the pin 42. he manner of yieldingly pivoting the arms 56 and 57 to the head 55 will permit the plate 52 to be raised'because the engage-' ment of the upper side of the arm 56 with the pin 42 will merely swing the arm downwardly. It will be remembered that the head 55 is reciprocating in a horizontal direction by reason of the cam 64, and when during such reciprocation the head has been Withdrawn to the limit of its movement to the right, the arm 56 will assume its horizontal position in line with the pin 42. Consequently on the next forward movement of the head, the arm 56 will engage the pin 42 and will turn the cross arm 41 into the dotted line position Fig. 3. This turns the rock shaft 39 into: position to can the weftpositioning arms 35 into the horizontal position and the weft-positioning arms 36 in their inactive osition below the horizontal as shown in ig. 4. This operation will place the weft thread 94 in position to be acted upon by the weft uller.- When the cam link 7 O is withdrawn rom-under the cam nose 73, then the lever 71 and plate 52 will gravitate into the position shown in Fig. 3, thus bringing the arm 57 into operative position to act on the pin 43 and thus restore the weft-positioning arms to the position shown in Fig. 3.

By placing the cam links 70 at proper locations on the chain 69, either weft thread may be placed in operative position at any desired intervals.

The rock shaft 34 has a disk 45 provided with notches 46, 47 and the bracket 32 has a lever 44 pivoted thereto, which is provided with a roll adapted to engage in either of the notches 46, 47, thereby to holdthe shaft 34 in either of its two positions. The lever 44 is acted on by a spring 48.

My device also comprises suitable means for gripping the Weft threads between the pull-off device and the source of supply after a length has been pulled off, so that when the air blast is delivered there will be no tendency for such air blast to draw added weft from the source of supply. This gripping device is in the form of two gripping levers 76, 77 pivoted to the frame 11, 12 and acted upon by springs 78, 79 which yieldingly holdthem against stops 100. These clamping members 76, 77 are normally separated and are situated closely adjacent the weft-guiding arm 74.- The clamping lever 77 is actuated by the chain 22 at the proper time, thereby to close it against the clamping member 76 for the purpose of clamping the weft threads. This lever 77 has a cord or flexible connection '83 connected to one end thereof and leading to an arm 82 fast on the rank rock shaft 80 which is journa'led in the frame 11, 12. The rock shaft 80 has an arm 81 thereon extending into the path of the weft puller, hence as the weft puller moves downwardly along .the guideway 11, 12 it will engage the arm 81, thereby rocking the shaft 80, and actuating the clamping member 77 to clamp the weft threads. This arm 81 is properly situated so that the weft threads will be clamped just after a length of either weft thread has been drawn off from the source of supply and before the air blast blows said length through the 'warp sheds.

The operation of the invention will be rmally one or the other of the weft threads 94, 95 is in position to be engaged by the downwardly moving Weft pulling pin 27, and as said pin moves downwardly, it will draw off a length of weft thread, and will then release said length when the weftpulling member is passing the cams 31. When this length of weft has been released it is free from restraint. weft thread has been ulled off, the arm 81 is actuated by the weft-pulling device, thereby causing the clamping member 77 to clamp the weft threads adjacent the weftguiding arm 74. Just after this occurs an air blast is delivered through the nozzle, thereby blowing the pulled off length of weft thread through the warp shed.

I claim:

1. In a loom, the combination with means to support a plurality of weft'threads, each having its source of supply, of selective means for drawing off a length of any Weft thread from its-source of supply and then releasing said drawn-01f length from the Just after the' drawing-off means, and means to deliver the source of supply after said length of weft thread has been pulled off.

3. In a loom, the combination with means to support a plurality of weft threads, each having its source of supply,- of a weft pulling-ofl' device adapted to pull off a length of weft from the source of supply and then release said length, an air blast nozzle by which the released length is blown into the warp shed, and means for selectively placing the weft threads in position to be acted on by the pulling-off device.

4. In a loom, the combination with means to support a plurality of weft threads, each havin its source of supply, of a weft pulling-o device adapted to pull off a length of weft from the source of supply and then release said length, an air blast nozzle by which the released length is blown into the warp shed, and means for selectively placing the weft threads in position to be acted on by the pulling-off device, and means to grip the Weft threads between the pullin -off device and the source of supply a ter any length has been pulled off.

5. In a loom, the combination with a loom frame, of a movable weft-pulling pin, means to selectively manipulate and place separate weft threads into position to be acted on by the weft-pulling pin means to cause said pin to release a weft thread after it has pulled a predetermined length from the source of supply, and an air blast nozzle for blowing each pulled-off length of weft thread into the warp shed.

6. In a loom, the combination with a loom frame, of two pairs of weft-guiding arms,

each adapted to support a weft thread, a

constantly moving weft-pulling pin, means to actuate said arm selectively to place either weft thread in position to be acted on by the weft-pulling pin, means to cause said drawing-off device and the source of supply pin to release the weft thread engaged f thereby after a certain length has been pulled from the source of supply, and means tg dleliver said pulled-off length to the warp s e 7. Ina loom, the combination with means to support a plurality of weft threads, each having its source of supply, of selective means for drawing off a length of any weft thread from its source of supply and then releasingsaid drawn off length from the drawing-oil means, and means to deliver said drawn-off length into a Warp shed by an air blast, and means actuated by the weft drawing-off device to grip the weft threads between said drawing-off device and the source of supply after each length of weft has been drawn off.

8. In a loom, the combination with a lay, of means for drawing off a length of filling from a source of supply, and then releasing said length from the drawing-off means, a filling-delivery nozzle carried by the lay and through which the drawn off length of weft thread is delivered into a warp shed, and means actuated by the drawing-01f device to grip the weft thread between said after the length has been drawn off.

In testimony whereof I have signed my v name to this specification.

JOHN C. BROOKS.

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