US1210643A - Bobbin-winding machine. - Google Patents

Description

C. E. HAYES.

BOBBIN WINDING MACHINE.

APPLICATION FILED N0V18 I515- l,210,643. Patented J an. 2, 1917.

UNTTED STATES PATENT @FFTQE.

CHARLES E. HAYES, OF WORCESTER,

LIASSACHUSETTS, ASSIGNOB TO CRAINSKA THREAD COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

IBQBBIN-WTNDING MACHINE.

1,210,643. Specification of Letters Patent. Patented Ja 2, 191% Application filed. November 8, 1915. Serial No. 60,178.

To all whom it may concern Be it known that I, CHAnLEs E. HAYES, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Bobbin-finding Machine, of which the following is a specification.

The main principles of this invention are capable of general use for winding bobbins of many kinds, but it is particularly adapted for winding those of the type used in Singer sewing machines and the like.

The principal objects of the invention are to provide a construction which can be used to wind bobbins economically in plants in which a large number of sewing machines are employed; also to provide means for making the thread cutting operation when a bobbin is fully wound more positive and definite than heretofore and to adjust the same; to providemeans whereby the application of the end of the thread to the bobbin is rendered automatic and substantially instantaneous, thus materially reducing the time of winding and doing away with threading the thread through an eye; to provide an improved hub arrangement for supporting the shaft which controls the guide for laying the thread on the vbobbin; to provide improvements in the oiling devices and.

improvements in the way of mounting the machine. Many of these features taken to-, gether constitute means whereby the speed of operation is very materially increased over any thing known in the art whereby the cost of winding is proportionately reduced. 1

Reference is to be had to the accompany ing drawing in which,

Figure 1 is a side elevation of a preferred embodiment of the invention with parts in section to show interior structure; Figs. 2 and 3 are end views with parts in section showing two positions of the threadcutting' constitutes the end of, a screw 29 having mechanism; Fig. 4: is a plan partly in section; Fig. 5 is a detail sectional view on the line 5-5 of Fig. 3; Fig. 6 is an end view of the bobbin and guiding device showing the threading operation, and Fig. 7 is a sec tional view of a Singer shuttle with 'my new bobbin in place therein.

So far as I am aware, it is not now the custom of manufacturers having several sewing machines in their plants to wind their own bobbins by a special bobbin winding machine because such bobbin winders, as for example that shown in the patent to Borton, No. 575,587, operate only at ordinary speeds and consequently it is not economical to use them for this purpose on a large scale. This invention is designed to remedy this difficulty and incidentally to provide a harder and better controlled winding of thread on the bobbin, this increasing the amount of thread that can be wound thereon and decreasing the expense of operating the ma chines by decreasing the number of bobbin replacements required for a definite amount of work. Themachine as illustrated in the drawings comprises a main frame or casing 10. It may be stated that this frame 10 is shown as removably mounted on a base plate 11 which is adapted to be secured in any desired manner to a bench or the like. This plate 11 has an undercut ledge 12 and the base of the frame 10 a projection 13 adapted to extend under it. The plate 11 is also provided with an integral hub 14- and a screw 15 extends through the frame into the hub to hold the frame in position. In this way the machine can be removed and replaced very easily so that a number of different sizes or types of machines can be kept in stock and used in the same position.

The frame 10 is provided with an oil well 16 and with a shaft 17 provided with a pulley 18 and having packings 19 for holding the oil. This shaft is shown as provided with a worm 20 for operating a worm gear 21 having a heart shaped cam 22 thereon. This cam operates against a roll 23 on a sliding rod 24: which is normally forced by a spring 25 in a direction to cause the roll to engage the cam at all times. This rod is provided with a thread guide 26 and with a notch 27. The gear 21 and cam 22 in this case are'made in a single piece and are mounted on a stud 28 which is fixed t0, and

a head on it projecting through from the outside of the casing. This is supported on the frame or casing in a fixed position by providing it with a hub 30 in a separate piece from the casing and having a screw thread for the screw. The casing is provided with a perforation which may be a little larger than the shank of the screw. The screw and hub therefore can be adjusted slightly when the machine is being set up and then fastened in position by tightening up the screw to get the right adjustment. For the purpose of holding the parts in adjusted position two pins 30 are shown through the casing and projecting into the hub. The holes are bored and the pins inserted into the hub after the adjustment is completed for preventing its turning or getting out of position while the screw is being fastened or loosened.

The bearing which the frame provides for the end of the shaft 17 on which the bobbin is fixed is provided with a depression 31 for receiving any oil from this shaft and this depression is connected with the well 11 by a passage 32 so that the oil can drain back into it. On the shaft 17 are a pair of oil rings 33 kept apart by a pair of pins 3st extending across the well. This oils the shaft thoroughly and permits it to be run at a speed of 20,000 revolutions or thereabout. On the end of the shaft 17 which projects through the end of the casing or frame is a stud 36. At the base of this stud is a flange 37 which is shown as cup-shaped on its exterior and is provided with a pin 38. This flange is made cup-shape for the purpose of fitting the convex surface of the bobbin &0. This bobbin is shown as having a simple shank through which is a perforation for receiving the stud 36, the stud and perforation being as small as may be convenient and the flanges of the bobbin, although hav ing parallel surfaces inside, are provided .with convex outside surfaces and the convexity extends clear to the edge of the perforation. The object of this is to provide a shape which will fit the ordinary Singer sewing machine shuttle 41 shown in Fig. 7 and cause the spring 42 thereof to be put under tension. When the shuttle is introduced in this way the spring always bears on the bobbin and no matter under what conditions it is operated it will not spin. This .is an important advantage in this art because the spinning of the bobbin results in tangling up the thread and interfering with the accurate operation of the machine. Al'- though this difficulty has been experienced for many years it is still present in the machines used in practice. This bobbin also has another feature. One of its flanges, or

preferably both of them, is provided with an eye a l and from this eye is a narrow slit 45 extending clear to the edge of the flange. One of these eyes is made for registering the bobbin with the pin 38 which projects into it while the other is used in threading as willappear in the description of the opertion of the machine.

The above mentioned patent to Borton shows a lever provided with a cutting means and an arm for engaging the thread on the bobbin by which the cutting means is supposed to be caused to act when the bobbin is filled with thread. One of the features of this invention is to provide a more positive and accurate means for accomplishing'this result at definite time. For that purpose a lever or bell-crank is shown 'mounted on a stud ol'projecting from the frame of the machine and adapted to swing freely thereon. This is provided with a sharp edge 52 orcutting, hammer adapted to engage in the slot 27 of the rod 24 to cut the thread. The lever is provided with an arm 53 operating to engage the thread on the bobbin and consequently to be forced out-- \vardly gradually as the bobbin is wound. The lever also has a sharp nose 5%, adapted to engage a pin 55 when there is very little thread on the bobbin or when the bobbin is absent. This is provided with a comparativelv sharp point having flat converging surfaces forming it.

On a stud 56 is pivoted an arm 57 working in slots in a boss 58 on the frame. A spring 59 acts on this arm to force it up. The arm is provided with a projection 60 at its end having inclined surfaces thereon adapted to engage the two inclined surfaces of the nose 54 in the two positions shown in Figs. 2 and 3. In the position shown in Fig. 7 2 this arm 57 tends to hold the arm against the thread and compress it on the bobbin. However as soon as the amount of thread thereon reaches a certain limit the point will be moved away and over the point of the end 60 and then the arm 57 with its spring pressure behind it will engage the opposite slanting surface of'the nose 5 1 and force the lever 50 into the position shown in Fig. 3. An operating arm 61 is shown for ananipulating this lever by hand.

The stud 56 is mounted eccentrically on a stud 62 which can be turned for adjustment. It is held in adjusted position by a set screw 53. In this way the arm can be adjusted longitudinally and the point at-its end over which the point of the nose 5 1 has to move is consequently moved out and in along a line substantially tangent to the are made by the point of the nose 54 as the lever swings. This insures proper adjustment to provide for winding more or less thread on the bobbin.

The operation of the device is as follows :The-rotation of the shaft 17 caused by a belt on the pulley 18 rotates. the stud 30 of course and also rotates the worm wheel 21 and the cam 22- so as to move the'rod 24L back and forth. Now a bobbin is placed on the stud and held until the pin 38 entersthe eye in that flange, when it is positively connected with the stud and rotates positively with the shaft. The thread then is drawn under the guide 26 over the slot 27 and over the outer edge of the bobbin. The first time the slot 45 comes around so as to receive the Les thread'it is drawn into it and thus into the eye, it being understood that the operator holds the free end of the thread in her hand.

This immediately causes the thread to wind on the shank of the bobbin as that rotates. Furthermore as the arm 53 is located in between the flanges of the bobbin the thread is cut off between this arm and the inner surface of the bobbin flange in one or two revolutions so that it will wind up on the bobbin without any end projecting therefrom. This arm 53 is gradually forced outwardly until the nose 54 passes over the end 60 and then it is forced farther away so as to bring the cutter 52 into the notch 27 and sever the thread at that end. This threading operation is particularly important as it adds materially to the rapidity of the winding operation. By causing the thread to be cut at a definite time and holding it by the spring pressed arm 53, a definite amount of thread is wound on the bobbin and as it is wound tightly, it is a relatively large amount.

Although I have illustrated and described only a single embodiment of the invention, I am aware of the fact that many modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described, but

lVhat I do claim is 1. In a bobbin winding machine, the combination of a shaft for supporting the bobbin to be wound, with a movable member having means thereon for engaging the thread and cutting it off and provided with an arm for engaging the body of wound thread on the bobbin, said movable member being provided with a nose, of an arm having an end adapted to engage said nose to hold the first named arm in contact with the thread on the bobbin until said movable member moves over said end on the second arm, and to then force the movable member in another direction to cause the thread to be cut.

2. In a bobbin winding machine, the combination of a shaft for supporting the bobbin to be wound, and a thread cutting lever, with means whereby said lever will be operated directly by the thread on the bobbin, an arm for preventing the operation of said lever to out the thread until the thread on the bobbin fills up toa predetermined diameter and for then immediately allowing it to move back, and an eccentric pivot on which said arm is pivoted for adjusting the point at which the lever will act to regulate the diameter of the thread as wound on the bobbin.

3. In a bobbin winding machine, the combination with a lever having means thereon for engaging the thread and cutting it off and provided with an arm for engaging the body of wound thread on the bobbin, said lever being pivoted to swing about a center and being provided with a sharp nose proj ection, of an arm having a sharp end adapted to engage said nose to hold the first named arm in contact with the thread on the bobbin until the arm positively pushes the nose on the lever over said end on the second arm' engaging the body of wound thread on the bobbin, said lever being pivoted to swing about a center and being provided with a sharp nose projection, of an arm having a sharp end adapted to engage said nose, :nd a spring for forcing the second arm into position against the nose whereby it will yieldingly hold the first named arm in contact with the thread on the bobbin until the arm positively pushes the nose on the lever over the projection on the second arm and will then force the lever in the opposite direction about its pivot to cause the thread to be cut.

5. In a bobbin winding machine, the com bination of a lever having an edge thereon for engaging the thread and cutting it off and provided with means for engaging the body of wound thread on the bobbin. said lever being pivoted to swing about a center and being provided with a sharp nosed projection, with an arm having a sharp end adapted to engage said nose, yielding means for forcing the arm into position against the nose whereby it will yieldingly hold the lever in contact with the thread on the bobbin until it positively pushes the nose over the projection on the arm and will then force the lever in the opposite direction about its pivot, and an eccentric pivot on which the arm is pivoted whereby said arm can be adjusted longitudinally to vary the position in which the lever will act.

6. In a bobbin winding machine, the combination of a shaft, a bobbin removably mounted on the shaft and positively connected therewith, a thread guide adjacent to the bobbin, the flange of said bobbin being provided with means whereby a thread extending from said guide over the edge of the bobbin will be caused to be threaded by a rotation of the bobbin and means whereby the thread projecting beyond the bobbin will be automatically cut oif at the inner side of said flange.

7. In a winding machine, the combination of a shaft having a seat for a bobbin provided with a projecting pin, a bobbin adapt-- ed to fit said seat and having two opposite flanges, each provided With aneye therethrough,.sa1d eyesbemg in position forone of them to receive the pin when the. bobbinv is in position on the shaft, the other eye being provided With a slit extending to the edge of it, and a thread guide located in such position that the thread extending; from the guide and passing over the outer flange of the bobbin will be caused to be engaged-by said slit and pulled into the eye, whereby the Winding ofthe bobbin can be started.

8. In a Winding machine, the combination ofa shaft having a; seat for a: bobbin provided With a projecting pin, a bobbin adapt;-

ed to fit saidseat and having two. flanges,

each having an eye, said eyes beingin ).osi tion for one of them to receive thepin when thebobbin is in position: on the shaft, each eye having a slit extending to the edge of it, and a thread guide located in? such position that the thread extending from the guide and passing over the outer flange of the bobbin will be caused to beengaged by said slitand pulled into the eye; and a'lever having an arm thereon adapted to engage the shank of the bobbin and the thread Wound thereon, whereby the; end oi the:

longitudinally for controlling the winding' 1 Y of the thread on the bobbin, a EI'RHIQ: for. supporting said shafts, a hub separate from said frame but mounted thereon, having its axis located transverse to, the. direction: of said shafts, means for clamping said hub to theframe comprising a screw having a stud on its end and meansniounted on said stud for receiving power frolnthe: shaft and; controllingthe reciprocation of said rod.

In; testimony whereof I have hereunto set my hand. 7

CHARLES HAYES.

Copies of this patent may be obtained for five cents each, by addressing the Commissionerof Patents- Washington,.]). 0;? I

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