US503459A - Picker for looms - Google Patents

Description

(No Model.)

A. D. EMERY. PIOKER FOR LOOMS.

No. 503,459. Patented Aug. 15, 1 893.

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ABRAM D. EMERY, OF TAUNTON, MASSACHUSETTS.

PICKER FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 5 03,45 9, dated August 15, 1893.

Application filed November 21, 1890. Renewed December 1, 1892. Serial No. 453,686. (No model.)

To a whom it may concern:

Be it known that I, ABRAM D. EMERY, of Taunton, Massachusetts, have invented a cer tain Improvement in Pickers for Looms, of which the following is a specification.

This improvement relates to the type of pickers which slide in the shuttle boxes, usually upon tongued and grooved guides, and which are slotted to permit the extension through them of the picker staff and which are composed of a metallic frame or carrier, and detachably-applied buffers of leather or other cushioning material for receiving the impacts of the picker, the shuttle and the back stop when the loom is in operation, as more fully described in pending application Serial No. 366,530, for improvement in pickers for looms, filed September 29, 1890.

The object of the present improvement is to lighten the weight of the picker, which is accomplished by the employment of the metal aluminum, or of an aluminum alloy, as the material for the said carrier. Aluminum is amply strong for the desired purpose, and by reason of its extreme lightness greatly diminishes the weight of the picker. An aluminum carrier, however, is liable to considerable abrasion, if permitted to bear directly and forcibly upon the surface of an object over which it moves rapidly. Such abrasion not only tends to wear away the metal, but also renders necessary the application of an objectionable quantity of grease or oil to the bearings upon which the picker slides.

The present invention consists in constructing the metal carrier of aluminum or of an aluminum alloy, and in protecting the carrier so constructed from contact with those portions of its guide upon which it is liable to bear forcibly, by interposing between those portions and the carrier pieces of a tough material, such as raw hide which are inserted in recesses appropriately formed in the body of the metal.

The accompanying drawings illustrating the application of the invention to a picker composed of a metallic carrier and detachable cushions are as follows:

Figure 1 is a top view of the picker. Fig. 2 is a longitudinal vertical section of the picker showing portions of the shuttle box and of the shuttle. Fig. 8 is an elevation of the shuttle end of the picker showing partly in dotted lines the strips of rawhide which are suitably applied to the carrier for the purpose of keeping the metal out of contact with the guide upon which it slides. Fig. 4 is a transverse section of the middle portion of the picker taken through the plane indicated by the dotted line X-X 011 Fig. 2.

The picker consists of a carrier a which is made of aluminum or of an aluminum alloy. The parallel vertical side walls a a of the carrier are cast, or otherwise formed, in one piece with transverse end walls. Near the bottom, the outer sides of the walls a a are provided with the longitudinal grooves 01. a which are adapted to receive the horizontal tongues a a projecting inwardly from the bottom of the side walls of the shuttle box. The opposed faces of each of the grooves a a are provided with recesses in which are deposited respectively the raw hide guard strips a a The bottom a of each groove is also provided with a recess to receive a raw hide strip a". The organization of the structure is such that the carrier bears with the greater friction upon the upper and lower sides of the tongues a a and for this reason guard strips a a of raw hide or some other suitably tough material are essential in order to prevent the forcible contact of the aluminum with the guide.

The transverse wall I) on the end of the picker toward the shuttle is formed with the cylindrical recess (1 in which there is deposited the shuttle cushion c. The inner face 71 of the wall I) is rounded and has applied to it the strip 01 of leather, the exposed surface of which presents a convex bearing to receive the forward blow of the picker stall. The transverse wall c at the opposite end of the carrier is rounded upon its inner side and has applied to it the strip f of leather for cushioning the backward blow of the picker staif. It will be perceived that when the picker is actuated by a picker staff vibrating upon afixed axis there will be imparted to the picker a tendency to bear forcibly upon its guides in directions which are parallel with the plane of motion of the picker staff. At the commencement of each stroke of the picker staff the picker is pressed ina slightly upward direction and during the latter part of the stroke the picker is pressed in a slightly downward direction. The abrading effects which would otherwise follow are entirely prevented by the guard strips a a which protect the aluminum from contact with the upper and under faces of the tongues (1. a and if raw hide be used as the material for the guard strips a a Very little or no oilor grease will be required to be applied to the guides.

What is claimed as the invention is- 1. The improvement in pickers for looms herein described, the same consisting of an aluminum frame or cushion-carriencombined with guard strips of tough material such as raw hide deposited in recesses formed in the body of the metal, substantially as and for the purpose set forth.

2. A picker substantially of the character described, composed of an aluminum frame or cushion-carrier provided with the longitudinal grooves a a and with guard strips a a seated in the recesses formed in the opposite faces of each of said grooves in combination with the tongues a a and the guard strips a a as and for the purposes setforth.

ABRAM D. EMERY.

Witnesses:

M. L. ADAMS, J. E. BURNS,

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