US2091209A - Combined slub catcher and self threader for spinning and twisting machines - Google Patents

Description

Aug. 24, 1937. G. c. MQOGREGOR 2,091,209

COMBINED SLUB CATCHER AND SELF THREADER FOR SPINNING AND TWISTING MACHINES Filed March 9, 1937 George 6'. Mac G/eyar,

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Patented Aug. 24, 1937 PATENT OFFICE COMBINED SLUB CATCHER AND SELF THREADER. FOR SPINNING AND TWIST- ING MACHINES George C. MacGregor, Cumberland, R. I.

Application March 9,

8 Claims.

The invention relates to a device preferably to be attached to the usual thread board of a spinning machine and to take the place of the usual simple thread guide nowin use.

The roving which is fed to the spinning machine includes irregularities frequently referred to as slubs. In the ordinary machine the slubs remain in the roving after it is spun and produce irregularities, unevenness and other undesirable effects in the final .yarn or thread produced. To some extent they may be removed from the thread or yarn but their removal may be a separate process andis expensive and not always sure.

The present invention contemplates providing at the thread board not merely a thread guide which is usually employed but substituting therefore a device which acts as a guide for the thread and at the same time acts as a slub catcher and removes the slubs from the rove as a part of the spinning or twisting operation.

In the accompanying drawing Figure 1 is a diagramatic view of the spinning apparatus illustrating one embodiment of the invention in place.

Fig. 2 is a plan view of a combined slub catcher and thread guide. Fig. 3 is a side elevation of the same. Fig. 4 is a transverse section on the line 4- 3 of Fig. 3.

As illustrated in Fig. 1 the roving it comes from the usual spool or bobbin l l and passes between the usual rollers l2. It then passes through the combined club catcher and thread guide generally indicated at l3 as mounted in any suitable way on the thread board 54. The spun or twisted thread is wound on the bobbin i5 ready for further use. The combined slub catcher and thread guide in the specific form illustrated consists of a preferably round end it by which it may be fastened to the thread board itin place of the usual simple thread guide heretofore employed. For convenience of operation and manipulation the forward portion of the shaft may be squared as indicated at ii and it gradually expands into an L-shaped member having a longer arm l8 and a shorter arm l9. Between the shaft portion l1 and the arm 18 is a seat 23 in which is a perforation through which passes a bolt 2| fastened by a nut 22 which holds on to the seat 23 a second L-shaped member having a short arm 2 and a longer arm 25. In the arm 24 is a slot 29 allowing adjustment on the bolt 2|. The longer arm 25 lies parallel with the longer arm 18 of the first L-shaped member and the end of the longer arm 25 lies parallel with and close to the shorter arm 55 IQ of the main L-shaped member. There is thus 1937, Serial No. 129,947

provided an L-shaped slot having a long arm slot 26 and a short arm slot 2'! between the two L- shaped members. Adjustment of the arm 2:4 by means of the bolt 25 and the slot it may vary the widths of the slots 26 and 2i. Carried by the movable long arm 25 is a thread guide which is illustrated as made of a bar or wire threaded at its end 2'8 and screwed at 28 into the arm 25. It is bent or twisted to form a single coil 29 from which extends an inclined arm 30 leaving an opening 3| in the coil. The end of the arm. 35 is preferably flared as indicated at 32.

The roving enters the slot 26 and passes through the coil 29 adjacent the thread guide 30 and passes to the bobbin i5. As the roving passes 15 through the slot 26 it may weave back and forth to some extent in that slot and as the twist is applied to the yarn it turns any slub present so that it is not flat when it passes through the slub catcher but may be there caught and removed. The thread guide to some extent limits the movement of the roving in the slot 26. The slot 26 may be adjusted to receive and operate yarn or thread of any desired size. The coil 29 of the thread guide lies under the slot 26 and since the 25 thread guide moves with the arm 25 when it is adjusted the thread guide wil always be in proper position with respect to the slot 2% to receive the thread. The end 32 of the arm 3% is flared or spread so that the tendency of the thread when 30 it breaks will be to Wrap itself around the arm 30 instead of flying free. A broken thread is thus prevented from interfering with the activities of the adjacent spinning structures. The thread guide preferably will be in position as indicated 35 in Fig. 3 when the opening 3| in the thread guide liesvery close to the slot 27 so that when the device is initially threaded, or if a thread breaks, it may be conveniently inserted into the device as a unit because a single movement may cause it 40 to pass through the slot 3! into the coil 29 and at the same time through the slot 21 from which it may be brought around to the slot 26 to be in position for proper operation.

It will be seen that there is thus produced a 5 simple, relatively cheap device which may be readily, simply and conveniently installed on thread boards already in use.

The device tends to produce perfect thread; it prevents interference with adjacent spinning devices. The thread may be readily, easily and simply inserted into its proper position in the combined devices.

The device is reversible and may be used for either Z-twist or S-twist spinning.

The invention is not confined to the specific apparatus illustrated which comprises merely one embodiment of the invention which obviously may be embodied in other forms of apparatus.

I claim as my invention:

1. In a cleaner, two L-shaped members arranged to leave an L-shaped slot between them, means for adjusting the width of the slot, and a thread guide carried by one of the L-shaped members.

2. A thread guide comprising a wire having a single coil therein through which the thread passes, and an arm extending adjacent the path of the thread and having a flared end to cause a broken end to adhere to the thread guide.

3. A combined cleaner and thread guide comprising a stationary L-shaped member, a square shaft for the member, a round extension on the shaft, a screw in the shaft, a second L-shaped member provided with a slot through which the screw passes for holding the second L-shaped member in adjusted position on the shaft so that the second L-shaped member cooperates with the first L-shaped member to form an L-shaped slot of adjustable width through which the roving passes to be cleaned, a thread guide removably mounted in the second L-shaped member, the thread guide comprising a twisted wire of a single coil the entrance to which is substantially in line with the entrance to the L-shaped slot and the center of which is substantially in line with the inner arm of the L-shaped slot and a downwardly extending arm at an angle having a flared end.

4. A combined cleaner and thread guide comprising a stationary L-shaped member, a screw in the stationary member, a second L-shaped member provided with a slot through which the screw passes for holding the second L-shaped member in adjusted position so that the second L-shaped member cooperates with the first L- shape member to form an L-shaped slot of adjustable Width through which the roving passes to be cleaned, a thread guide removably mounted in the second L-shaped member, the thread guide comprising a twisted wire of a single coil the entrance to which is substantially in line with the entrance to the L-shaped slot and the center of which is substantially in line with the inner arm of the L-shaped slot and a downwardly 50 extending arm at an angle having a flared end.

5. A combined cleaner and thread guide comprising a stationary L-shaped member, a screw in the stationary member, a second L-shaped member provided with a slot through which the screw passes for holding the second L-shaped member in adjusted position so that the second L-shaped member cooperates with the first L- shaped member to form an L-shaped slot of adjustable width through which the roving passes to be cleaned, and a thread guide removably mounted in the second L-shaped member.

6. A combined cleaner and thread guide comprising a stationary L-shaped member, a second L-shaped member, means for holding the second L-shaped member in adjusted position so that the second L-shaped member cooperates with the first L-shaped member to form an L-shaped slot of adjustable width through which the roving passes to be cleaned, and a thread guide removably mounted in the second L-shaped member.

7. A combined cleaner and thread guide comprising a stationary L-shaped member, a second L-shaped member, means for holding the second L-shaped member in adjusted position so that the second L-shaped member cooperates with the first L-shaped member to form an L-shaped slot of adjustable width through which the roving passes to be cleaned, a thread guide removably mounted in the second L-shaped member, the thread guide comprising a twisted wire of a single coil the entrance to which is substantially in line with the entrance to the L-shaped slot and the center of which is substantially in line with the inner arm of the L-shaped slot, and a downwardly extending arm at an angle having a flared end.

8. A combined cleaner and thread guide comprising a stationary L-shaped member, a second L-shaped member, means for holding the second L-shaped member in adjusted position so that the second L-shaped member cooperates with the first L-shaped member to form an L-shaped slot of adjustable width through which the roving passes to be cleaned, a thread guide removably mounted in the second L-shaped member, the thread guide comprising a twisted wire of a single coil the entrance to which is substantially in line with the entrance to the L-shaped slot.

GEORGE C. MACGREGOR.

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