US2036660A - Shuttle - Google Patents

Description

p i 1,1936 w. M. mm 2 6,660

SHUTTLE Fild Jan. 17, 1935 2 Sheets-Sheet 1 I225 2 D 9E34 BA I I 3| E 34 E 34 l i I I GE SBA 1N VENTOR.

' ATTORNEY.

April 7, 1936- w. M. TAYLOR 2,036,660

SHUTTLE Filed Jan. 17, 1935 2 Sheets-Sheet 2 Hal I 1/ v V l 60 u 1,. 6|

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hm W ATTORNEY. I

Patented Apr. 7, 1936 UNITED STATES PATENT ()FFICE 3 Claims.

This invention relates to shuttles and particularly to those of the type known as self- '-,threading shuttles such as are used in automatic looms.

:Its purpose is to provide a simple and cheap arrangement for the threading slots and the eye which will permit the thread to be positively threadedon the second pick and will also prevent it "from unthreading and from looping or getting caught in such a way that it will be broken.

Other objects are to provide a shuttle with threading devices adapted for a bobbin wound to the left or to the right without change and one in which a tubular eye memberis used which can easily be replaced when'worn or broken.

The principal feature is the use of a tubular eye member suitably bored and cut, which can :be inserted in a cylindrical eye-hole bored in one :side of the shuttle, co-operating with relatively simple cuts in the wood of the shuttle whereby the thread will easily thread but cannotreadily unthread.

This tubular eye member may be of metal such hardened steel, porcelain, enameled metal, glass or other suitable material which has 'a hard surface.

Another advantage is that if the tubular eye member is made of metal, it can be bored and cut with simple, straight tools involving very few processes, the'edges can be rounded and smoothed and then the whole thing can be case-hardened '-or otherwise treated to make the surface resistant'to wear or the surface can be enameled or plated for the same purpose.

.If the eye is to be made from porcelain or other similar material, the clay or other material can be easily shaped, cut and bored and the eye can thenirbe heat treated and hardened.

I am familiar with patents to Webster, 797,477; Daudelin, 849,213; Mitchell, 1,188,005; Spencer, .1.,2'72,'138;"Cass, 1,315,946; Shambow, 1,399,893; and some others which have been used with hand-threading shuttles, but not with selfthreading shuttles as is my device.

In 'such' hand-threading shuttles, there is a metal or porcelain tube located in a threading chamber in front of the bobbin chamber, but in this tube there is a vertical passage at the front from which there is a horizontal passage which allows the thread to get into the tube and pass :outat-the side. Apparently, the idea is to prevent unthreading, but this vertical passage at the front absolutely prevents automatic threading.

By suitably cutting a lengthwise threading slot down from the top in the wood and by locating a tubular eye with a thread-receiving slot which extends from back to front from the top and registers with the middle part of the one in the Wood and by continuing the slot in the wood out at the side, and by providing the tubular metal eye with a whirl hole the axis of which is at right angles to and below the axis of the eye, the thread unwinding from the bobbin slips down into the whirl hole and spins around in it on the first pick. On the second pick, the thread slips down through a thread-receiving slot in the wood into a corresponding slot in the tubular eye and thereafter stays in the tubular eye. To prevent the thread slipping out after the second pick, I arrange the thread-catching slots in the way hereinafter described.

In the drawings, Fig. 1 is a plan view partly in section of one end of a shuttle embodying my device, showing the thread on the first pick as it unwinds from the shuttle while still attached to the battery.

Fig. 2 is a side elevation of the same end of the shuttle shown in Fig, 1 with the thread as it appears after it has been threaded and on the second pick.

Fig. 3 is a top view,.Fig. 4, a bottom view, and Fig. 5, a back view of the tubular eye removed from the shuttle.

Fig. 6 is the vertical section on the line 66 of Fig. 1.

Fig. 6a is a view similar to Fig. 6 of a slightly different cutting of the thread directing and thread catching slots.

Fig. 7 is an enlarged front view of the tubular eye removed from the shuttle.

Fig. 8 is a transverse vertical section on the line 88 of Fig. 2.

Fig. 9 is a transverse vertical section on the line 9-9 of Fig. 1.

Fig. 10 is a plan view similar to Fig. 1, a modified form of shuttle embodying my device.

Fig. 11 is an elevation from the eye side of the shuttle shown in Fig. 10.

Fig. 12 is a longitudinal vertical section on the line |2l2 of Fig. 10.

In the drawings, S represents a shuttle having the usual metal point I, and longitudinal thread groove 2 on the side of the eye outlet.

A is a chamber for the bobbin B on which the thread T is wound.

In the shuttle shown in Figs. 1 and 2, the points I, l are not in the center and the side 24 has a longer straight portion than the side 25 from which the thread emerges from the eye E.

In forward extension of the bobbin chamber A is a thread-receiving slot C which is shown as narrow along the longitudinal middle part and as curving outwardly each way at its top, forming guide lips l0, in to guide the thread down into it.

Slot C is preferably enlarged at its bottom l2 and at its front part l3, widens out and merges with a thread-catching slot F which slopes downward and backward therefrom into the cylindrical eye-hole G which is bored in from one side, there being, therefore, an outlet 20 so that the thread can slip down into slot C, thence through slot F and out through eye-hole G.

This construction forms at the top a threadcatching nose N which tapers toward the front so that if any loop is formed on it, the loop will easily slip off.

Preferably at the back end of slot F and running along eye-hole G is a thread directing slot D, the purpose of which will be explained.

E is a tubular eye of metal, porcelain or, other suitable material positioned in eye-hole G. Metal eye E is bored slightly below its center with a fairly large whirl hole shown at 32, -33 extending cross-wise of its length but length-wise of the shuttle and down from the top into this is cut a thread-receiving slot 30 which when metal eye E is in place in hole G, registers with the narrow middle part I of thread-receiving slot C. A thread-catching slot 3| is cut so as to extend from the forward part 33 of the whirl, hole cut the outer end 34 of metal eye E which eye is so positioned that this thread-catching slot 3| registers with slot D but is slightly below the part 2|] of slot F.

As shown in Fig. 6a, the'thread receiving slot C and nose N may be cut as at N and the front part of the thread catching slot F may be shaped as shown at I3 the eye E being in the same position as shown in Fig. 2;

To hold the tubular eye E in place, a suitable vertical hole 4| is pierced through the wood of the shuttle and other holes 42 are pierced through the tubular eye E so that a pin =30 can be driven down through it to hold eye E in place.

In Figs. and 11 is shown the application of the tubular eye to a shuttle H in which the bobbin chamber is in the middle laterally, the long xis of the shuttle passing through the middle of the bobbin chamber and of the bobbin B when it is in place.

A thread-receiving slot K extends forward from the bobbin chamber, said slot having at its back and in fact along its entire length, the guide lips 5|, 5| and narrows down at its middle part 52 which registers with the thread-receiving slot 30 in the tubulareye E. This thread-receiving slot K also widens out as it extends forward at 53, in a well-known manner, to receive thread T on the first pick as the thread extends, from the place where it is held, down to: the bobbin B from which it unwinds.

54 is the thread-catching slot which corresponds in function with slot but in this case there is no thread-directing slot such as D, but thread-catching slot 55 registers with the thread catching slot 3| in eye E. The nose 55 performs the same function as nose N but is of somewhat different shape. I

In this case eye E is set into the eye hole 51 so that it does not project into the longitudinal thread groove 56 and so that pins 60 and 6| can be driven down through the wood and through cut-away parts such as 32 and 53 of eye E, thus preventing it from turning and providing a hard, durable wearing surface for the thread as it runs out through the eye.

When the eye E is set in place with the threadcatching slot 3| above the center, no locking device such as provided by D and 3| is needed to prevent it from unthreading as the natural pull of the thread as it I"=.=.I1S out from the shuttle in the 100m keeps it down below slot 3|. Pins 6|! and 6| also take the place of pin 40 in preventing eye E from turning or coming out of hole 51.

As shown in Fig. 12, this position of slot 3| means that the axis X-X of whirl hole 3233 is not parallel with the axis Y-Y of the shuttle. The whirl hole permits free unwinding of the thread but keeps it from unthreading.

The thread-receiving slot C is preferably enlarged along its bottom l2 to register with the whirl hole 32-33 in eye E, and the axis X-X of this whirl hole is preferably slightly below the axis ZZ of tubular eye E, and the thread-catching slot'3l starts slightly above the axis XX and while it is preferably parallel with the axis ZZ, it may slope slightly up or down provided it connects with the end 20 of slot F in the wood either directly or through a slot such as D. Preferably, slot 3| is a little above the center so that the thread on alternate picks, while tending to pull down in any event, is not likely to slip back through it, but if it does, it is caught in the part D of slot F, or even if it goes back through slot F, on the next pick it rethreads. However, as shown in Figs. 10, 11, and 12, the same'result can be obtained by turning tube E slightly thus lifting slot 3| out of the path of the thread as it is pulled from the front to the back of the eye in weaving.

I claim: 1

1. The combination in a self-threading shuttle, of a wooden body having a bobbin chambena longitudinal, vertical, thread-receiving slot which extends forward and upward therefrom, said slot having guide lips at the back of the top proximate the bobbin chamber and narrowing down at its middle part and being enlarged at its back bottom part and widening out at its front part, a thread-catching slot which slopes downward and backward from the thread-receiving slot into a transverse cylindrical eye hole which extends in from one side, said'receiving slot extending out with said hole at one side of the shuttle so as to form a thread-catching nose, there being a downwardly extending thread-directing part of the thread-catching slot extending transversely alon the front of the eye hole; with a tubular metal eye positioned in said eye hole, said eye having a horizontal whirl hole with its axis below and at a right angle with the axis of the eye, a thread-receiving slot which registers with the thread-receiving slot in the wood and extends down into said whirl hole, and a thread'- catching slot which registers with the threaddirecting part of the thread-catching slot in the wood and connects the forward part of the whirl hole with the outer end of the eye.

2. The combination in a self-threading shuttle, of a wooden body having a bobbin chamber, a longitudinal, vertical, thread-receiving slot which extends forward and upward therefrom, said slot having guide lips at the top and narrowing down at its middle part and being enlarged at its back bottom part and widening out at its frofit part, a thread-catching slot which slopes downward and backward from the thread-receiving slot into a transverse cylindrical eye ,hole which extends in from one side, said receiving slot extending:

out with said hole at one side of the shuttle so asto form a thread-catching nose; with a tubular eye positioned in said eye hole, said eye having a horizontal whirl hole with its axis below and at a right angle with the axis of the eye, a thread-receiving slot which registers with the thread-receiving slot in the wood and extends down into said whirl hole, and a thread-catching slot which registers with the thread-catching slot in the wood and connects the forward part of the whirl hole with the outer end of the eye.

3. The combination in a self-threading shuttle, of a wooden body having a bobbin chamber, a longitudinal, vertical, thread-receiving slot which extends forward and upward therefrom, said slot having guide lips at the top, a thread-catching slot which slopesdownward and backward from the thread-receiving slot into the front of a straight transverse cylindrical eye hole which extends in from one side, said receiving slot extending out with said hole at one side of the shuttle so as to form a thread-catching nose; with a tubular eye positioned in said eye hole, said eye having a horizontal whirl hole with its axis at a right angle with the axis of the eye, a thread-receiving slot which registers with the thread-receiving slot in the wood and extends down into said whirl hole, and a thread-catching slot which registers with the straight thread catching slot at the front in the wood and connects the forward part of the whirl hole with the outer end of the eye.

WILLIAM M. TAYLOR.

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