US160843A

US160843A - Improvement in loom-shuttles

Info

Publication number: US160843A
Authority: US
Publication date: 1875-03-16
Anticipated expiration: 1892-03-16

Description

E CLT cy r.

THVE GRAPHIC C0.PHOT0-L|TH.39 81.41 PARK PLAUE,N.Y

t Nrrnn Sfrnfrns PATENT @Enron MARK SAFFORD, OF MELROSE, ASSIGNOR TO HIMSELF AND PERCIVAL D. RICHARDS, OF WEST MEDFORD, MASSACHUSETTS.

IMPROVEMENT IN LOOM-SHUTTLES.

Specification forming part of Letters Patent No. 160,843, dated March 16,1875; application led Nevember 17, 1874.

To all whom t may concern:

Beit known that I, MARK SAFFORD, of Melrose, of the county of Middlesex and State of lllalssachusetts, have invented a new and usei'ul Improvement in Shuttles for Looms; and do hereby declare the same to be fully described in .the following specilication and represented in the accompanying drawings, of which- Figure 1 is a longitudinal section of a shuttle provided with Amy invention. Fig. 2 is a top view ot' the body or the shuttle without the spindle and its operative spring. Fig. 3 is a top view of the spindle. Fig. 4 is a side view, and Fig. 5 a top view, of the spindlefexpander. Fig. 6 is a front view of the grooved cani for operating the expander.

My invention is for the purpose of expand ing the spindle While it may be in the act ot' being turned down into the oop-chamber of the shuttle, such expansion of it being to hold the cop securely, and prevent it from working loose upon so as to be thrown ott' the spindle, while the shuttle may be at work in a loom.

The spindle Ais split lengthwise and bowed from near its point to its head, as shown at a b b in Fig. 3, and it is provided with a bore, c, leading from the split through the head d. This bore is to receive the rotary expander B, which is wedge-shaped where it goes between the bows b b, and at its rear end it is provided with a short arin or head, e, projecting from it, and shaped as shown. The said head or part e is to operate with a cam-groove, f, arranged, as shown, in the back stop or abutment, against which the spindle-head bringsup, when the spindle is down in its lowest position within the cop-chamber g of the shuttle-bod y D. This cam-groove I preferto make in a plate or block, h, of metal arrangedin the shuttle-body, and duly fastened thereto, as the block, besides being a cam for operatingl the expander, constitutes a very enduring back-stop for it.

While the spindle may be in the aot of being turned down, the expander will be partially revolved in the spindle, and in so doing will expand the spindle or move its bows b b apart within the oop, so as to securely tasten the said cop to the spindle. On turning up the spindle with the cop, the expander will be turned backward, so as to allow the inherent elasticity of the bows b I) to cause them to oontract or approach each other in a manner to loosen their hold upon the oop.

I claim- In the loom-shuttle, the combination of the split spindle A, with the rotary expander B, and piece h provided with the cam-groove f, all constructed and arranged to operate together, as and for the purpose specified.

MARK SAFFORD.

Witn esses:

It. H. EDDY, J. R. Snow.