US642388A - Loom-shuttle. - Google Patents

Description

No. 642,388. Patented Ian. 30, I900.

' H. TOMLINSON.

' LOOM SHUTTLE.

ApplicMion filed ,Oct. 27, 1899.)

(No Model.)

lb (0 I I.

FIG 1 88 WITNB55E5 INVENTOR- (i/k $46M?) Mu, 32m

"mg Norms PETERS cov. Puma-Luna, WASHXNGTON. n. c

NrrED STATES PATENT OFF CE.

HENRY TOMLINSON, OF LAWVRENOE, MASSACHUSETTS.

LOOM-SHUTTLE.

SPECIFICATION forming part of Letters Patent NO. 642,388, dated January 30, 1900. Application filed October 27,1899. Serial No. 734,932. (No model.)

To all whom it may concern:

Be it known that I, HENRY TOMLINSON, a citizen of the United States, and a resident of Lawrence, in the county of Essex and State of Massachusettahave invented certain new and useful Improvements in Loom-Shuttles, of which the following is a specification.

In loom shuttles in which the ordinary wooden bobbin is used it is necessary to provide some means for holding the bobbin against longitudinal movement on the shuttle-spindle. In the shuttles in most general use this has been accomplished in one of two general ways, which may be briefly referred to as follows: first, by providing the shuttle with a spring which engages an annular groove in the base or head of the bobbin when the latter is in place in the shuttle, and, second, by providing the outer end of the spindle with a cap or flange and making the spindle removable from the pivoted socket in which it is placed when it is swung out of the shuttle, so that its base end may be passed through the bobbin.

The first method is objectionable for the reason that the holding-spring is constantly chipping out pieces of the wood in the base of the bobbin, so that it will not hold in the groove. Whenever this occurs it is necessary to stop the loom, take out the shuttle, and turn the bobbin to a new place. After a bobbin is chipped care must also be exercised by the weaver to see that one of these places does not come opposite the spring;

This chipping of the bobbin occurs most frequently in wide or high-speed looms, where the shuttle is given an especially-hard blow to drive it across the loom, it always occurring when the shuttle is shot pivot end first. To avoid the chipping of the bobbins, the second class of shuttles above referred to were devised; but these shuttles are open to other serious objections, although they obviate the danger of chipping the bobbin above referred to. These shuttles will wear only half of the length of time that the shuttles of the other class will wear, as the constant wear of changing the bobbins is so great that the spindle soon becomes loose in its socket, so that it will shake and rattle and often break the bobbin. Another serious difficulty is caused by the wearing of the locking parts, so that the end of the spindle will project out at one side of the shuttle and render the same useless. In addition to the above defects such a shuttle is so heavy at the pivot end that it is liable to fly out of the loom. It is also much more expensive to make than the kind having the locking-spring, and the time required to change the bobbin is materially less with the latter.

The object of my invention is to provide a shuttle which, combines the advantages of both classes of shuttles above mentioned and yet dispenses with the attendant disadvantages. I accomplish this object by providing a shuttle whichis similar in most respects to the class of shuttles first mentioned, but from which the locking-spring is omitted and in which the end of the spindle is provided with a movable button which may be turned so as to permit the passage of the bobbin over the end of the spindle and then turned so as to prevent the movement of the bobbin thereon.

For a more complete disclosure of my invention attention is called to the accompanying drawings, in which- Figure 1 is a plan view of a shuttle provided with my invention. Fig. 2 is a central longitudinal cross-section taken on the line y y of Fig. 1. Fig. 3 is a cross-section on the same plane as Fig. 2 of a portion only of the shuttle and showing the spindle thrown out. Fig. 4 is a plan View on the end of the spindle and bobbin when in the position shown in Fig. 3. Fig. 5 is a cross-section of the end of the bobbin and spindle when in the position shown in Fig. 2. Fig. 6 is a cross-section on the line a; x of Fig. 2.

In the drawings, 1 indicates the main body of the shuttle, and 2 the spindle,which is suitably secured in the socket 4, the socket being pivoted on the usual pin 3, which passes longitudinally through the shuttle. The socket is provided with the flat surfaces 4 4 at the proper angle to each other, on which the usual jackknife-spring 5 bears, so as to hold the spindle in either of its two positions as desired. The end of the spindle 2 is provided with a cylindrical extension-piece 6, which is of slightly less diameter than the diameter of the hole through the bobbin 7 and of the same diameter as the end of the socket 4 to which the spindle 2 is secured.

A bearing for each end of the bobbin is thus provided. The forward end of the end piece 6 is provided with a horizontal slot 6, which is cut entirely through the same from side to side, and a button 8 is pivoted in this slot on the pin 8. The button 8 is made flat and semicircular in shape, and the pivot 8 passes nearly through the center of the same and through the center of the end piece 6. The width of the button from the center of its straight side to the center of the curved side must be no greater than the diameter of the end piece 6 or of the bobbin-hole and is preferably less, as shown. The length of the button on the straight side must be greater than the bobbin hole and should be slightly less than the outside diameter of the bobbin at its end. The curved side of the bobbin preferably coincides with the curved end of the end piece 6, as shown in Fig. 1.

The shuttle is formed with three flat surfaces 1 1 1 at each side of the socket, the surface 1 being at right angles to the central line of the spindle when the spindle is in its outer position, (shown in Fig. 3,) the surface 1 being at right angles to the central line of the spindle when the spindle is in its inner or normal position, and the surface l being arranged at an intermediate angle between these two surfaces.

In placing the bobbin in the shuttle the following steps are taken: The spindle is thrown out to the position shown in Fig. 3 and the button 8 is swung to the position shown in Fig. {4. In this position neither the straight side nor the curved side of the button will project beyond the sides of the end piece 6, so that the bobbin is free to be passed onto the spindle overjthe end thereof. The base end of the bobbin will then be brought into engagement with the surface 1 so that the bobbin will assume the position shown in Fig. 3. When in this position, the outer end of the bobbin will be just past the end of the button 8, the button being in the position shown in Fig. 4:, so that it may be thrown around to the lateral position shown in Figs. 1 and 5. After this is done the bobbin is slipped forward on the spindle, so that the end of the bobbin engages the ends of the button, as shown in Figs. 1 and 5. The spindle is then pressed down into the shuttle, so that the base end of the bobbin will come against the surface 1, and when it is in this position it will be held against longitudinal movement between the surface 1 and the button 8. If the bobbin is not drawn up to the position shown in dotted lines in Fig. 3 and in full lines in Figs. 1, 2, and 5 before the spindle is pressed into the shuttle, the surface 1 will act to force the bobbin into that position as the spindle swings into the shuttle. In removing the bobbin the opposite steps will be taken-that is, the spindle will be swung out, the bobbin slipped back to the position shown in Fig. 3,

the button turned to the position shown in Figs. 3 and 4, and the bobbin slipped off the spindle.

' A shuttle which is made in accordance with the construction just described will have all the features of durability of the shuttle of the class first referred to and yet when used there will be no danger of the bobbin being chipped, and, in fact, it holds the bobbin so firmly in place that there is little or no danger of its being split by a heavy blow on the shuttle, so that a bobbin with a short head may be used. My shuttle costs little, if any, more than the shuttle using the locking-spring and is more perfectly balanced. The bobbin may be changed in my shuttle with much greater facility than it may be changed with a shuttle having a removable spindle, and the objections to the latter above referred to are obviated by my invention.

I do not desire to restrict myself to the precise form of button shown, though I have found in practice that this form is more convenient than any other form of which I am at present aware.

I-Iaving described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is as follows:

1. A loom-shuttle having a spindle pivoted therein at one end, means for holding a bobbin from longitudinal movement on said spindle, consisting of a button, one dimension of which is less and the other greater than the diameter of the hole through the bobbin, a slot in the opposite end of the spindle from the pivoted end which extends diametrically across the same and in which said button is centrally pivoted, whereby said button may be turned in either direction in said slot to permit the passage of the bobbin onto or off the spindle, and a stop which is arranged to engage the base of the bobbin when the spindle is swung into the shuttle.

2. A shuttle having a spindle pivoted therein at one end, means for holding a bobbin thereon against longitudinal movement, consisting of a button which is pivoted in the end of said spindle opposite its pivoted end, said button being adapted to be turned so as to permit or prevent the passage of the bobbin onto and 01f the spindle, a fixed stop carried by the shuttle which is arranged to engage the base end of the bobbin when the spindle is swung into the shuttle and hold the opposite end of the bobbin against the button.

3. A loom-shuttle having a spindle pivoted therein at one end, a bobbin, a slot in the opposite end of said spindle, a button pivoted therein which is adapted to be turned so that the bobbin may be passed over the end of the spindle or be turned so that it will prevent the removal of the bobbin therefrom, a stop adjacent to said spindle which is located so as to engage the base end of the bobbin after the opposite end thereof has passed beyond the button, when the spindle is swung out of the shuttle, and a' stop which is adapted to engage the base of the bobbin when the spindie is in the shuttle, whereby the bobbin may 5 be held against longitudinal movement be- Witnesses:

tween said stop last mentioned and said but- LOUIS H. HARRIMAN,

ton. l M. O. JAQUITH.

In testimony whereof I have affixed my signature in presence of two witnesses.

HENRY TOMLINSON.

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