US550611A

US550611A - Tension device for loom-shuttles

Info

Publication number: US550611A
Authority: US
Publication date: 1895-12-03
Anticipated expiration: 1912-12-03

Description

(No Model.)

, S. M. HAMBLIN. TENSION DEVICE FOR LOOM SHUTTLBS.

No. 550,611. Patented Dec. 3.11 95.

UNITED STATES PATENT OFFICE.

STEPHEN M. I-IAMBLIN, OF NEW BEDFORD, ASSIGNOR OF ONE-HALF TO EDVIN S. DAMON, OF PLYMOUTH, MASSACHUSETTS.

TENSION DEVICE FOR LOOM-SHUTTLES.

SPECIFICATION forming part of Letters Patent No. 550,611, dated December 3, 1895.

Application filed arch 11,139

To aZZ whom. it may concern:

Be it known that I, STEPHEN M. HAMBLIN, a citizen of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Tension Devices for Loom-Shuttles, of which the following is a specification.

The accompanying drawings illustrate my invention, in which- Figure 1 is a top view of a portion of a loomshuttle, showing my improved tension device properly adjusted therein. Fig. 2 is a side view of the tension device as it appears when removed from the shuttle. Fig. 3 is a top view of the same. Fig. 4 is view in perspective of the device with the regulating and retaining screw removed and showing a slight modification in its construction. Fig. 5 is a View in cross-section through the dotted line 00 at of Fig. 1. Fig. 6 is a view of the screw by means of which the tension device is retained in the shuttle and the tension regulated.

Similar letters refer to similar parts in the several views.

The letter a indicates a portion of a shuttle-body having the recess a made in one side of the throat thereof, in which recess is se= cured the tension device 19, consisting of a piece of spring sheet metal bent into a semicircle, with the ends elongated parallel to each other, having one end provided with the square hole 0, and the other end with the round hole 01-, and a screw 6, adapted to pass through the hole d, having a square shoulder under its head adapted to fit in the square hole 0.

In Figs. 2 and 5 the spring I? is shown as having its lower end bent upon itself and extending to a point in line with the portion of the circle 17, where it is slightly bent downward, as at 61 When the tension device is constructed. as shown in Fig. 2, the thread runs between the parts d and 61 but when it is constructed as shown in Fig. 4 the thread runs between the part d and the bottom of the throat of the shuttle, and when greater tension on the thread is desired the end 11 of the spring 7) Serial No 541,274. (No model.)

is pressed downward until the square hole 13 therein is free from the square shoulder e and the screw is advanced to a sufficent clegree. To lessen the degree of tension, the screw is retracted.

The ends of the spring I) are preferably made square, so that when the device is ad j usted, as shown, the said ends will bear against the side of the recess and prevent the device from turning from side to side and getting out of its proper position.

It will be observed that when the square shoulder of the screw is in the square hole in the springb the screwis prevented from turning and Working out, and thus a uniform tension is maintained on the thread.

It will also be observed that the operation of threading the shuttle is the same either with or without the tension device and that the thread will draw under the tension device of its own motion.

Having thus described my invention, what I claim, and desire to secure by Letters Patcut, is-

1. In combination with a loom shuttle, a tension device, consisting of a semicircular spring, having one end provided with a square hole, and the other with a round hole; and a screw, having a short square shoulder under its head, and adapted to pass through said holes and secure said spring in the shuttle, substantially as shown and described.

2. A tension device for a loom shuttle, consisting of a piece of spring metal bent into a semicircular shape, having one of its ends bent outward and back upon itself, and extending tangentially to a point in line with the swee of the circle, and having its single end provided with a square hole, and its doubled end witha round hole; and ascrew, having a short square shoulder under its head, and adapted to pass through said holes, and

secure said spring in the shuttle, substantially Witnesses:

HENRY W. MASON, FRANK M. SPARROW.