US297821A - Ter pollard - Google Patents

Description

(No'ModeL) 0.11. LOMBARD &;s.' POLLARD.

PIGKER STAFF-GHEGKI FOR LOOMS.

Patented Apr. 29,- 1884.

W rtr E E' 5 MNWM spring being broken away.

UNITED STATES" PATENT OF ICE.

OLIVER D. LOMBARD AND SYLVESTER POLLAR D, OF LOWELL, MASS.

PICYKER-STAFFFCHECK FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 297,821, dated April 29,1884.

' Applicationfilcd August 20, 1883. (No model.)

To all whom it may concern.-

Be it known that we, OLIVER D. LOMBARD, a citizen of the United States, and SYLvEs- TER POLLARD, a subject of Victoria, Queen of the United Kingdom of Great Britain and Ireland, and both residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Picker-Staff Checks for Looms, of which the following is a specification.

Our invention consists of means of securing the picker-check to the lay-beam, and of means of varying the resistance of the check.

In the accompanying drawings, Figure 1 is a front elevation of a part of the frame and the lay of a loom, showing a picker-staff, shoe, shoe-strap, roll, and our invention at-' tached to the lay-beam. Fig. 2 is alongitudinal section of one end of the lay-beam through the picker-staff slot, showing the cap and our invention attached to the lay-beam. Fig. 3 is a cross-section of the lay-beamand the cap through the picker-staff slot, showing our invention attached to the lay-beam, a part of the block and the horizontal portion of the Figs. 4 and 5 are views like Figs. 2 and 3, respectively, except that in Figs. 4 and 5 a different form of pickerstaff check is shown.

In Fig. 1, A is a part of the loom-frame; B, the lay-shaft, provided'with the extension B; E the sword of the lay; O, the pickerstaff; 0, its shoe. D is a strap, the end of which is secured to the lower end of the picker-sta-ff D, a roller, on which the strap D is wound, as usual, by a spiral spring. (Not shown.) B" is the slot in which the upper end of the pickerstaff oscillates. B is the metallic cap which forms the bottom of the shuttlebox and incloses the end of the lay-beam.

All of the above-named parts are of the usual construction and operation.

The picker-staff check shown in Figs. 1, 2, and 3 consists of a spindle, E, near the ends of which are attached the ends of a spring-wire, F, the wire passing through holes E in said spindle, and beingthen wound around the spindle in two spirals, F F, toward each other, one spiral being right-handed and the other left-handed, and the middle uncoiled part or arm, F, of

the wire being nearly of a U shape, and having a straight horizontal part, F, against which the picker-staff strikes in its outward motion, this part F being covered with leather F to deaden the noise of the picker-staff striking it and prevent wear of said staff and part. The spindle E is supported by being passed horizontally through the block G, provided .with a tapering shank, G, having four cars,

99 g 9, two on each side of said shank, in opposite pairs, the distance between the upper pair, 9 g, and the lower pair, 9 9, being equal to the combined thickness of the lay-beam and its cap. The shank G is passed endwise up through the slot 13*, with its flat faces lying lengthwise of the slot, and then turned at right angles, so that its upper cars will rest upon the top of the cap, and the lower ears I will fit closely against the under side of the lay-beam, the-shank being retained in place by friction between it and the lay-beam.

To make the shank more secure in its place, a piece of rawhide or leather, H, (which also serves as a 'bufier for the picker-staff to strike against,) is crowded into the slot against the shank.

It will be seen that the above-described device affords a means of attachingla pickerstaff check to the lay-beam without the use of screws or bolts such as are commonly used. The objection to the use of screws and bolts is that they are continually getting loose and breaking, requiring the loom to be stopped for repairs and causing great inconvenience and expense. The spindle is prevented from turning in the block by a set-screw, I, which, entering a threaded hole in said block, thrusts against said spindle. By loosening the setscrew and turning the spindle very slightly,

the resistance which the check offers to the .blow of the picker-staff. A stud or spindle,

O, is firmly secured in the stationary cam N,

and 011 this spindle the other cam, N, turns, being pressed up against the stationary cam by a spiral spring, I, surrounding said spindle, and compressed between the movable cam and a pin, 0, which is driven through said spindle. A washer, 0", may be placed between the pin 0 and the spring P. Various other well-known forms of checks may be attached to the lay-beam in the same manner.

\Ve claim as our invention-- 1. A picker-staff check provided with a shank adapted to reach through the pickerstaff slot of a lay-beam, and having means to engage directly with said lay-beam, substantially as specified. I

2. A picker-staff cheek provided with a shank adapted to reach through the pickerstaff slot of the lay-beam, and having a pair OLIVER D. LOMBARD. SYLVESTER POLLAR'I).

\Vituesses:

ALBERT M. Blooms,

KIRKLEY HYDE.

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