US541377A - Island - Google Patents

Description

T. J. MURDOGK. BOBBIN HOLDER AND THREAD GTGHER.

Patented June 18, 1895.

(No Model.)

Wit

UNITED STATES nmTMCWnn THOMAS J. MURDOCK, OF woonsoonn'r, nuonn ISLAND.

BOBBlN-HOLDER AND 'l'HREAD-CATCHER.

"S'PECIFICATION forming part of Letters Patent NO. 541,377, dated June 18 1895.

Application filed July 23,1894- Serial No. 518,296- (No model.)

To all whom it may concern.-

Be it known that I, THOMAS J. MURDOCK, a citizen of the United States, residing atWoonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Bobbin-Holders and Thread-Catchers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to figures of reference marked thereon, which form a part of this specification.

This invention relates to bobbin-holders for service during the process of filling or windingemptybobbins. This mechanism isadapted for general use on mules and ring spinning frames or twisters, and the action of the faller-wire and the doffing of the bobbins and putting on of empty bobbins are the same as are now generally practiced.

The present method in general use for bold ing bobbins on spindles consists in winding enough yarn around them to form a packing. On these packings the bobbins are driven to place. hen the bobbins are full the tallerwire is pressed below the heads, guiding the threads to place and the spindles are made to rotate so that enough yarn is wound around them to cause the threads to break when the bobbins are being removed. Thus the threads remain fast to the spindles in readiness to be raised by the wire and again wound around the empty bobbins. WVhen a full bobbin is removed from the spindle there always remains fast to it near the head, what is called the thread-end. If this end is too long it causes trouble while in the act of being woven into cloth as it becomes entangled with the true thread, while the latter is passing swiftly from the bobbin and causes the thread to break, making waste and imperfect cloth. To overcome this difficulty is oneof the features of my invention; accordingly I have formed a thread-catch which consists of finger openings to be made in the disk, through which the thread passes, the latter being wound diagonally around the outside cup or shell for a short distance, and is caught at a single point, so that when the wires are raised, that portion of the thread which was around the outer shell comes off and rests at the point where caught, thus leaving the thread end very short.

My improvements are further embodied not only in the bobbin-holderproper,but likewise in mechanism which serves to catch and hold the thread.

The gist of my invention consists in making the bobbin-holder operate the th read-catch,'so thatthe act of removing the bobbin, when filled, causes the catch to grasp the thread which is broken by removal of the bobbin. Conversely, when an empty bobbin is put in place the catch is again operated to release the thread-end which passes on and is wrapped about the bobbin. Thus the waste ends are obviated, an important feature, while the several functions of holding, severing, and releasing the thread are entirely automatic, and the operative exercises no thought or care to see that these important steps are carried out. The very act of taking off a full bobbin and replacing an empty bobbin in the holder is a positive assurance that these several actsholding, severing of the thread and releasing of the thread-endare efficiently performed.

The drawings accompanying this specification represent, in Figure 1, a bobbin-holder and thread-catch in side elevation, the empty bobbin resting in the mouth of the holder prior to disengagement of the thread end. Fig. 2 is a vertical central section on line 3 3 in Fig. 3. Fig. 3 is a plauwith the spindle in section. Fig. 4. isa perspective view of a holding-plate. Fig.5 is a diagram indicating the thread and taller-wire raised in the act of passing the thread to an empty bobbin, the thread end being held fast. Fig. 6 is a similar view showing the position of thread and wire in the act of catching the thread prior to removal of a full bobbin.

In the above drawings I have represented a spindle at 2 of the usual type adapted for rotation by means of the wheel 3 and arranged to receivea bobbin 4 upon which yarn is to be wound. This material is indicated at 5. One feature of my invention is embodied in the bobbin-holder, as composed of a circuvertically positioned upon its upper surface are two or more holding plates 8. These latter comprise a body portion 9 which is bent- I00 .lar disk 7 firmly afiixed to the spindle, while to approximate in curvature to the contiguous portions of the bobbin head 10 made in the usual manner. The upper edge is flared at 12, while a tongue 13 extends through a hole in the disk 7 and is held fast to a movable shell by a pin or by forming a knob 14 which prevents its withdrawal. The shape of the plates 8 and their attachment to the disk are such that they can rock or oscillate in lines radially toward and away from the spindle. To compel them to move simultaneously an annular coiled spring 15 girdles the plates and forces them toward a central point which is the axis of the spindle. The outwardly curved edges or lips 12 prevent the spring from slipping off and hold it in place.

From the above description of parts it is evident that a large holding surface is presented, while the bobbin is positioned centrally of the spindle. Furthermore the holder is very simple and comprises merely the fixed disk, two or more oscillating holding plates and an annular spring. In fact the number of parts need not exceed four in number, and since the holding plates can be struck up from sheet metal the holder may be made at a very small expense.

In the winding of bobbins it is very necessary to hold the thread-ends at the time a full bobbin is removed and furthermore it is of still greater importance to avoid the threadends which present obstructions to good weaving as is well known to those skilled in the art. To overcome these difficulties and to be able to wind bobbins in which there shall be no thread-ends, I have constructed a thread-catch. This may be attached to the bobbin-holder before described, or not, as circumstances dictate. In the present instance, as illustrated in Figs. 1, 2, 3 and 4, the bobbin holder consists of a hub 16 adapted to be fitted to spindles of various sizes to which it is securely fastened. Mounted upon this hub is a horizontal disk 7'from which riseagroup of circumferential fingers 17, formed with oppositely disposed points 18 18 to provide for right or left rotation as may occur. The disk 7 is pierced at intervals to admit the intermediate portion 19 of the holding plates and allow them to oscillate radially of the spindle, the center of oscillation being in the shell 20. This shell or cup is formed with a tubular sleeve which slides upon the hub, while the walls of the shell snugly inclose the exterior surface of the fingers 17 which rise vertically from the fixed disk 7. See Figs. 1, 2 and 3. From the above description itwill be seen that the ffingers affixed upon the disk 7 are stationary or fixed points, while the shell is connected to the holding plates 8. Hence as the latter engage with the bobbin-head, the act of forcibly disengaging said bobbin from the plates 8 serves to reciprocate the shell. Thus in thrusting the bobbin in between the plates the shell is pushed down and the thread-end is released. Converselyin taking off a full bobbin,the shell is pulled up. This last movement causes the shell to co-operate with the fingers, whereby the thread is seized and held, and as the bobbin is lifted up the thread is severed at this particular point.

Reference to Fig. 5 shows the thread-catch in the position last described above, with the taller-wire at 21, and the tension at 21, with the thread-end at 23 which is designed to travel in the direction as indicated. The faller-wire is common to all the threads and its manner of mounting and mode of operation are such as are now in general use.

To avoid having loose thread-ends and to prevent such, the operative when putting on an empty bobbin proceeds as follows: In lieu of thrusting the bobbin home within the bob bin-holder, he positions it in the mouth of the holder asin Fig. 1 where enough friction oc ours to revolve the bobbin. He then raises the wires to the position shown in Fig. 6 as he raises the faller wire the end of the thread still being fast, and secures several turns of the thread 23 about the bobbin sufficient to cause the thread to hold fast thereupon. The bobbin is now thrust home, which act pushes the shell 20 down and releases the thread-end which before this act was fast. The fallerwire is then to resume its normal position and the filling of the bobbin proceeds. Conversely when the bobbin is full the wires are depressed. See Fig. 6. This act carries the thread across the path of the revolving fingers, one of which seizes the thread and when the bobbin is removed the upper edge of the shell engages the fingers 17 and the thread is held fast and broken at this point. While the wires are depressed the thread is wound about the outside of the shell. Hence when the wire is raised as in Fig. 5 it is unwound from about the shell and comes ofif to the point where it is caught. In this way loose thread-ends are avoided.

What I claim is- 1. A revoluble spindle adapted to carry a bobbin, a disk affixed to said spindle, and a series of fingers circularly grouped and mounted upon the disk, combined with a shell adapted to wipe the fingers and mounted upon the spindle, substantially as described.

2. In a bobbin holder a revoluble spindle, a disk fast to it, a series of fingers forming part of the disk, combined with a shell loosely mounted upon the spindle, two or more oscillating plates pivoted to the shell and extending through the disk, and means to cause the plates to grip the bobbin-head, whereby the ghell may be moved, substantially as speci- 3. In combination with a rotary spindle, and a bobbin-holder thereupon, a group of circumferential thread-grasping fingers mounted on a disk fast on the spindle, and a shell supporting the bobbin-holder and adapted to reciprocate and to cotiperate with the fingers, substantially as described and stated.

4. The combination with a revoluble spindle, a transverse disk secured fast to it, and

thread-catchers thereon, of a shell loosely ing plates secured to the shell, and an annumounted on the spindle, two or more rocking lar spring disposed circumterentially 01": the plates secured to the shell, said shell being plates, whereby the shell is adapted to recipr 5 adapted to move upon the thread-catchers rooate upon engagement with or disengage- 5 and hold the thread, while it is passing about ment of the bobbin from said spindle, subthe exterior of said shell, substantially as set stantially for purposes described.

forth. In testimony whereof I affix my signature 5. The combination with a rotary spindle, in presence of two witnesses. a transverse disk affixed to it, and thread- THOMAS J. MURDOCK.

1o catchers upon the disk and immovable with Witnesses:

respect to the spindle, of a shell loosely JAS. W. GREENE, mounted upon the spindle, two or more rock- WILLIAM J. MOWRY.

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