US136786A - Improvement in loom-picking mechanisms - Google Patents

Description

A. STUCKWELL.

`Lonfm Picking-Machines.

Patented March11,1873.

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rUNITED STATES PATENT OFFICE.

ALBERT STOCKWELL, OF WOONSOCKET, RHODE ISLAND.

IMPROVEMENT lhl LOOM-PICKING MECHANISMS.

Specification forming part of Letters Patent No.1 36,786, dated March 11,1873.

To all whom it may concern:

Beit known that I, ALBERT SToCKwELL, of Woonsocket, in the county of Providence and State of Rhode Island, have invented a new and valuable Improvement in Looms; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part of this specication and to the letters andI figures of reference marked thereon.

Figure l of the drawing is a representation of a front eleva-tion of my invention. Fig. 2 is a cross-section of my invention.

This invention has relation to means for operating Jthe picker-stick in loom mechanism, as hereinafter set forth.

In the accompanying drawing', the letter A designates the frame-work of a loom; B, the lower shaft with its gear-wheel ai; C, the upper shaft with its cranks b b and gear-wheel c. Power is applied to this shaft at d. D represents the race with its standards d and rock-shaft e. E represents one of the pickersticks. To the inner face of each standard el is pivoted a short rock-shaft, a', carrying at one end an arm,y l1', and at the other a seg- To the arm b is attached the pickerstrap d, which may be made sufficiently stiff `to return the stick to its original position after the stroke. To the lower end of the segment is secured a band, f, connecting the latter with the bent lever F, which is pivoted to the sliding barry, which works in the bearing h attached to the loom-frame. To the end of the upper or curved arm of the lever F is pivoted an anti-friction roller, k, opposite the crankjoint .connection between the upper shaft and the arin l of the race. This arm is provided at its end with a toe or bunter, z, which, at every second revolution of the shaft, comes in contact with the roller lr, and operates the lpicker-stick through the bent lever F. To the lower end of the slide g is attached an arm, h', for engagement with a cam, fv, on the lower shaft, designed to lift the slide, and the bent lever F at every second revolution of the upper shaft, thus raising the anti-friction roller 7c at such times suiciently to clear the bunter z. Thus the bunter is arranged to strike said roller at every second revolution, the shuttle being returned at every alternate revolution vof the shaft through the medium of similar mechanism in connection with the picker-stick at the other end of the race. G represents a large cam secured to the lower shaft under the bent lever F, and designed to hold said lever up tothe front or inner end of the shuttle-box during the return of the shuttle in order to prevent the operative from introducing two shuttles into the loom at the same time.

The advantages of the mechanism described may be stated as followsf I am enabled to applypower to the crankshaft instead of the lower shaft, and thus to avoid undue wear of the gearing. A degree of durability hitherto unattained is thought to be secured,'and th loom is rendered capable of being run at increased speed.

In the arrangement described the lower shaft will only operate the harness and rilling-cams.

What I claim as new is- 1. The combination, with the bunter z and bent lever F, of the slide g and cam o, substantially as specified.

2. The combination, with the bunter z and picking-lever F, of the holding-cam G, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

ALBERT STOGKWELL.

v Witnesses:

EDWIN ALDEICH,

WILLIAM H. JENcKEs.

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