US143218A

US143218A - Improvement in loom-pickers

Info

Publication number: US143218A
Authority: US
Publication date: 1873-09-30
Anticipated expiration: 1890-09-30

Description

8. Boom. Loum-P iokers.

Patent ed September 30 m w W i,

am/w PATENT ()FFIGE.

UNITED STATES SAMUEL BOORN, OF LOWELL, MASSACHUSETTS.

IMPROVEMENT IN LOOM-PICKERS.

Specification forming part of Letters Patent No. 143,21 8, dated September 30, 1873; application filed April 9, 1873.

To all whom it may concern:

Be it known that I, SAMUEL BOORN, of Lowell, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvementin Loom-Pickers, of which the following is a specification:

My invention consists of a jacket or clamp of rawhide or other suitable material, applied to the picker, as hereinafter described, so as to take the force of the picks or blows of the picker-staff, and protect the picker from wear and fracture, and so as to prevent the hole in the picker for its guide-rod from becoming so elongated as to cramp upon the rod and wedge itself fast, without mateflallyincreasing the weight orsize of the picker, or necessitating any changes in the looms in common use for its application to them.

Figure 1 is a view of one side of a picker having my improvement applied. Fig. 2 is an end section of the same on the line X Y, Fig. l. l

A is the picker. B is the hole through which passes the rod on which it slides backward and forward. At the end 0 it strikes the shuttle and drives it. The neck or shank of the picker passes through a slot in the back of the Shuttle-box, this slot being only wide enough to admit of the neck passing within it. Hence it is not possible to increase the thickness of this part of the picker.

At the point d the pickerstaff strikes the picker, and, as the part of it which comes in contact with the latter moves in the arc of a circle, whilethepickermovesinastraightline,thestaff strikes, or bears upon, onlypart of the edge of the picker atthc same instant, and cuts or wears into it very rapidly. By the shock of its repeated blows the picker-staff, also, soon draws out, or elongates, the hole B through which passes the guide-rod,Which it traverses, and the picker cramps on the rod, and is torn apart by the force of the blows. To remedy these evils, and afford a greater surface for the blows of the picker-staff, and also stiffen the picker about the hole B, so that it cannot be drawn out of shape and without adding materially to the size and weight of the picker,

. I apply the jacket or clamp of rawhide F about the picker, so that its edges, at the ends, shall extend. over the point where the staff strikes, and terminate against the sides a: 00 of the shuttle-box caseibefore reaching that part of the neck of the picker which passes through the side of the shuttle-box. At the same time the edge of the jacket F, as the staff moves forward, receives the force of the blow-being struck first-and prevents the hole B from being drawn out of shape.

As the jacket F onlycovers and protects those parts of the picker exposed to the most wear and strain, it does not add materially to the weight or size of the picker, or the cost of making it, while it nearly doubles its strength and durability. v

The ends of the jacket F, on each side of the picker, bearing against the face of the shuttie-box case on the line 0 c, serve to take the lateral strain off the hole B, through which the race-rod passes, and aid in preserving the shape of the hole, thus insuring freetraverse of the picker to and fro.

The jacket F may be secured to the picker in any suitable manner; but I prefer to rivet it to the latter in the usual way.

What I claim as new and my invention is-- The picker A, having its spindle-sleeve surrounded by the jacket F, so that the ends of said jacket shall bear against the sides was of the shuttlebox case, substantially as described.

' SAMUEL BOORN.

Witnesses:

D. HALL RIcE, J. F. HASKELLL