US2147493A - Bobbin carrier for braiding machines - Google Patents

Description

Feb. 14, 1939. Q, MacMURRAY 2,147,493

BOBBIN CARRIER FOR BRAIDING MACHINES Filed March 17, 1937 2 Sheets-Sheet l Feb. 14 1939. o. M MuRRAY BOBBIN CARRIER FOR BRAIDING MACHINES Filed March 17, 1937 2 Sheets-Sheet 2 I INVENTOR BY %c% rd ATTORNEYS Patented Feb. 14, 1939 UNITED snares AENT orrice Orrin MaoMurray, South to B. F. Gladtlirlg &

Otselic, N. Y., assignor Co. Inc., South Otselic,

N. Y., a corporation of New York Application March 17, 1937, Serial No. 131,420

4 Claims.

This invention relates to braiding machines, and particularly to bobbin carriers therefor, and more particularly to bobbin carriers for braiding machines in which the carriers travel along a serpentine path.

It has for its object means for normally holding the bobbins from unwinding movement and releasable by the weights around which the thread or yarn is looped to permit the thread or yarn to unwind from the bobbin under the pull on the thread during the braiding operation.

It further has for its object a multiple bobbin carrier and a weight for each bobbin thereon around which the thread or yarn leading from i the bobbin is looped.

It further has for its object a multiple bobbin carrier and weights thereon, one for each bobbin,

around which the threads from the bobbins are looped respectively in their passage to the former opening of the machine with the weight releasing holding devices, which normally hold the bobbins from unwinding movement, which are released by the weights, as the weights approach the upper ends of their movements under the draw of the threads during the braiding operation.

Other objects appear throughout the specification.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure l is an elevation of this multiple bobbin carrier.

Figures 2 and 3 are enlarged opposite end views, looking downward and upward, respectively.

Figure 4 is a detail view of one of the weights and companion latch operated thereby and the holding device or pawl controlled thereby.

Figure 5 is a fragmentary View illustrating a portion of a conventional braiding machine provided with this bobbin holder, one bobbin holder being shown.

In Figure 5, designates an annular top plate which is formed with a serpentine track, groove l or slot 2 along which the bobbin holders travel. 3 designates gears located beneath the top plate and carrying slotted wheels or cams 4 which receive studs or followers at the lower end of each bobbin carrier. The wheels are actuated in any well known manner.

H designates the body of the bobbin holder. This is provided with a base ll formed with a slide or shoe l2 movable in the serpentine slot 2. The base I l is also provided with a depending stud or follower M for coacting with the slotted 5 wheels or cams 4 in the usual manner. The body It is here illustrated as in the form of a rectangular or oblong plate having wings l5 extending laterally from opposite corners on one side thereof at an incline to the plane of the body, as seen 10 in Figures 2 and 3, for supporting the spindles on which the spools or bobbins are mounted. It is also formed with a plurality of guides or channels 16 in the side thereof opposite to that on which the spools or bobbins are carried and also II with guides H, in the form of channels, in the edges of the oblong formation behind the wings l5.

l8 designates the spools or bobbins, these being mounted on studs l9 projecting from the wings 20 I 5, these studs being arranged at a right angle to the wings, so that the studs on one wing incline toward the studs on the other wing. The spools or bobbins are rotatably mounted on the studs.

20 designates the weights movable along the guides, that is, as here illustrated, in the channels IE, there being one weight in each guide or channel l6. These weights are in the form of elongated slides, as seen in Figure 4, and each is 30 formed on its inner edge, that is, the edge towards the bottom of the guide or channel I6, with a thread groove 2|. The lower end of each slide or weight 26 is formed with a similar groove 22 which continues upward at 23 in the outer edge 35 of the slide or weight 20.

24 are latches, one for each sliding weight 20 and each bobbin or spool I8, these latches sliding in the channels ll. Each has an angular shoulrler 25 at its upper end. The shoulders 25 extend 40 across the upper ends of the grooves or channels it in which the sliding weights 20 are located into the paths of the sliding weights 29. The shoulders 25 of the latches-are of different lengths, as seen in Figure 2, so as to coact with different weights or slides 20, and the slides 20 are so formed at their tops that they will engage the shoulder 25 of a predetermined latch 24. For instance, in Figure 4, the shortest latch 24 is shown, and the upper end of the corresponding slide or weight 20 is formed with a notch 26 in its top to clear the adjacent latches 24 and 24 (Figure 2). The shoulders 25 of the other latches are correspondingly notched, so that each weight can operate but Y one particular latch. The 55 the bOdy latches on one side of the body I are duplicates of those on the other and are reversely arranged relative thereto (Figure 2).

Each spool is provided with a toothed wheel 21 at its inner end, with which coacts a holding device, as a pawl 28, for normally holding the spool from turning movement, particularly unwinding movement. Each pawl is mounted upon a rock shaft 29. These rock shafts 29 are mounted in suitable bearings in the wings l5, and each is actuated in one direction by a spring 30 to press the pawl into operative or holding position. The rock shafts extend through the wings Hi to the opposite sides of the wings to that on which the spools are mounted, and each is provided with a rock arm 3| at its inner end for coacting with an angular lug or shoulder 32 projecting outwardly from each latch 24. As here shown, the rock shafts are mounted in sectional bearings formed partly in the edges of the wings I and partly in the edges of the bearing strip 33 secured to the edges of the wings l5, as by screws 34. The springs 30 serve not only to hold the pawls 28 interlocked with the toothed wheels 2'! but also to hold the rock arms 3| against the shoulders 32 of the latches 24 and to return these parts, after being operated, to their starting or normal position.

The spools or bobbins are held on their spindles by the pawls 28, and for this purpose, each toothed wheel 21 is interposed between one of the heads of its spool and a disk or shroud 35 mounted on the core 36 of the spool, so that the nose of the pawl 28 is located in a groove 31 formed by the shroud 35 and the head of the spool.

In the normal operation of the pawl, the nose does not pass entirely out of the groove 31 but by lifting up on the pawl, so that its nose moves out of the groove 37, the spool may be removed and replaced.

The threads or yarns T pass from the spools through bushed openings 38 in the body these openings extending through the bottoms of the guide channels l6 respectively for the sliding weights 20. The threads then pass downwardly through the grooves 2|, 22 and 23 of the weights and upwardly through bushed openings 39 in an angular flange or shelf 40 at the upper end of land thence through the braid former opening located in the aXial line of the circular path of travel of the carriers along the serpentine track 2.

Each carrier is here shown as provided with six spools or bobbins. However, at certain periods of the braiding operation, all of these bobbins may not be used, and hence the thread or threads of one or more bobbins in each carrier are broken and caught in a device, as a coiled spring 4 l, arranged adjacent the opening 39.

In Figure 2, the threads T from two of the bobbins are shown as out of use and caught inthe spring 4|.

If a thread breaks during the braiding operation, its corresponding weight 20 will drop and its lower end fall below the lower edge 42 of the body H, where it is in position to strike and operate a lever or other device to automatically stop the machine. As automatic stopping devices operated by weights are old and well known, it is thought that further description of this feature is unnecessary.

In braiding certain articles, as for instance, fish lines, a taper is sometimes given to one or a both end portions of the line, and hence during the braiding, a less number of bobbings of each carrier than the whole number on each carrier, may be used, and as the braiding progresses, the machine may be stopped and additional threads connected up through the braid former opening, until the full number of threads on each bobbin carrier is used, and then after a given length of line has been braided, the line again is tapered by from time to time removing or disconnecting the bobbins by breaking the thread and hooking their ends in the device 4|.

In operation, the threads from the bobbins are passed through bushed openings 38 and looped in the grooves 2|, 22, 23 of the respective slidable weights 2B, and passed through the bushed openings 39, and thence to the braid former opening. As the carrier travels along the serpentine track 2, or during the braiding operation, the draw on the threads causes the weights 20 to slide upwardly, until they individually strike and operate the companion latches 25, carrying the latches 25 upwardly. The upward movement of the latches is transferred to the rock shafts 29 and the pawls 28 through the rock arms 3|. When the pawls 28 are released from the toothed wheels 21, the bobbins or spools are free to turn under the pull of the braiding mechanism on the thread. Immediately after this operation, the weights take up the slack and in dropping, permit the spring 30 to react and again engage the toothed wheel 2i and hold the spool from turning movement.

What I claim is:

1. A bobbin carrier for braiding machines in which the bobbins travel in a serpentine path, the carriers comprising an upright body having means on one side thereof for supporting a plurality of bobbins, and guides on the opposite side of the body, the body being also provided with guides in the edges thereof between said sides, movable weights in the first guides, one for each bobbin, and around which the threads leading from the bobbins are looped, the weights having an up and down movement under the pull of the threads during the braiding operation, latches movable in the second guides and having shoulders arranged in the paths of the weights to be engaged thereby, when the weights approach the ends of their upward movements, and holding devices for normally holding the bobbins from turning movement under the draw of the thread, the latches having means for actuating the holding devices to release them.

2. A bobbin carrier for braiding machines in which the bobbins travel in a serpentine path, the carriers comprising an upright body having means on one side thereof for supporting a plurality of rows of bobbins, slots extending lengthwise of said body on the opposite side thereof forming guides, the body being also provided with slots extending lengthwise thereof forming guides in the edges thereof between said sides, movable weights in the first guides, one for each bobbin, and around which the threads leading from the bobbins are looped, the weights having an up and down movement under the pull of the thread during the braiding operation, latches movable in the second guides and having shoulders arranged in the paths of the weights to be engaged thereby when the weights approach the ends of their upward movement, and holding devices for normally holding the bobbins from turning movement under the draw of the thread, the latches having means for actuating the holding devices to release them.

3. A bobbin carrier for braiding machines in which the bobbins travel in a serpentine path, the carrier comprising an upright body having Wings extending laterally from opposite corners on one side thereof at an incline to the plane of the body for supporting a row of spindles, bobbins mounted on said spindles, slots extending lengthwise of said body on the opposite side thereof forming guides, the body being also provided with slots extending lengthwise thereof forming guides in the edges thereof between said sides, movable weights in the first guides, one for each bobbin, and around which the threads leading from the bobbins are looped, the weights having an up and down movement under the pull of the threads during the braiding operation, latches movable in the second guides and having shoulders arranged in the paths of the weights to be engaged thereby when the weights approach the ends of their upward movement, and holding means for normally holding the bobbins from turning movement under the draw of the thread, said holding means locking the bobbins on their spindles, the latches having means for actuating the holding devices to release them, and further actuation of the holding devices unlocking the bobbins from their spindles.

4. A bobbin carrier for braiding machines in which the bobbins travel in a serpentine path,

the carrier comprising an upright body having wings extending laterally from opposite corners on one side thereof at an incline to the plane of the body for supporting a row of spindles arranged at a right angle to the wings so that the spindles on one wing incline toward the spindles on the other wing, bobbins mounted on said spindles, slots extending lengthwise of said body on the opposite side thereof forming guides, the body being also provided with slots extending lengthwise thereof forming guides in the edges thereof between said sides, movable weights formed with thread grooves in the first guides, one for each bobbin, and around which the threads leading from the bobbins are looped, the weights having an up and down movement under the pull of the thread during the braiding operation, latches movable in the second guides and having shoulders arranged in the paths of the weights to be engaged thereby when the weights approach the end of their upward movement, and holding means for normally holding the bobbins from turning movement under the draw of the thread and for locking the bobbins on their spindles, movement of the latches actuating the holding devices to release them, and said holding devices being manually operated to unlock th bobbins from their spindles.

ORRIN MACMURRAY.

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