US588660A - Bearing for loom picker-sticks - Google Patents

Description

(No Model.)

H. M. SCHADEWALD.

BEARING P03 LOOM PIGKER STICKS. No. L' 88,660.4 Patented Aug. 24, 1897.

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UNITED STATES- PfATENfr.v OFFICE.

HARRY M. SCHADEVVALD, OF PHILADELPHIA, PENNSYLVANIA.

BEAR|NG Fon Loo`|v| :atmen-STICKS.

SPECIFICATION forming part of Letters Patent No. 588,660, dated yAugust 24, 1897.

` Application filed September 17, 1896. Serial No. 606 ,095. (No model.)

To au whom t may concer-n:

Be it known that I, HARRY M. SCHADE- WALD, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new andv useful Improve.

.by the constant wear and breakage of pickersticks at the point where they are pivoted to the loom -frame, and whena stick is rendered useless by such wear or breakage it is necessary to stop the loom and remove the old stick, replacing it with a new one, and, as is well known by those skilled in the art, this requires considerable time, all of which results in a loss of product of the loom. These disadvantages I have entirely overcome by providing a metal bearing which may be quickly attached to or detached from a picker-stick.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, its construction and operation will now be described in detail, referring to the accompanying drawings, for ming a part of this specification, in which- Figure l is a perspective of a portion of a loom frame and lay, showing a picker-stick attached thereto by my improvement; and Fig. 2, a detailed perspective of the lower end of the picker-stick and the bearing removed therefrom.

In carrying out my invention I provide a semicircular plate A, with which is formed a box B, or, if desired, this box may be formed of a separate piece and secured by rivets or otherwise to the plate. 'Within the box isa half-bearing C, adapted to t the pivot-bolt D, which projects from the stud E, the latter being of ordinary construction and arrangement, and from the inner surface of the box project prongs F, so that when the box is to be attached to the pickerestick Git is only necessary to place said prongs in proper position against the inner edge of said stick and embed them therein bysufficient force, after which a screw passed through the hole I-I, formed in the plate, and into the face of the picker-stick will securely hold the box and plate in position upon said stick. A halfbearing I is formed in the edge of the pickerstick which corresponds with the half-bearing in the box, so that the pivot-bolt D is inclosed upon one side by the' bearing I and upon the other by the bearing C. From this it will be seen that when a picker-stick is thus pivoted to the stud E and the loom is in operation the thrust upon the lower end of the picker-stick which is incident to the action of the sweep in causing said stick to throw the shuttle will be received by the bearing in the box, and as this may be made of steel or other suitable metal it is obvious that but little wear will be brought about by this thrust, and, further, that it will be impossible to split the picker-stick at its lower end, as no strain comes upon the grain of the wood passing through the bearing-hole, as is the case in picker-sticks as now used.

The return movement of the picker-stick, occasioned by a suitable spring, causes the bearing in the stick to act upon the pivotingbolt, but as this movement performs no work it is obvious that but little strain Will be exerted upon this bearing; but to prevent the liability of considerable wear taking place upon the bearing I the hole J is made to fit the bolt D snugly, thereby causing the plate to receive a portion of the strain incident to the reverse movement of the picker-stick.

As now constructed the life of a pickerstick is very short, as it is constantly liable to split at-the point where the pivoting-hole is formed, as such a stick is subjected to an enormous strain and jar by the rapid movements and sudden stops which are necessarily transmittedthereto by the actions ofthe loom.

One ofthe advantages of myimprovement l is that it may be readily attached to a pickerstick with little or no alteration of the latter, and when the stick has become worn or IOO said plate being secured against the side of the stick, with the flange itting against the edge thereof, the seinicircular depression forming a complete bearing With the semicircular bearing in the stick, substantially as described.

In testimony whereof l have hereunto affixed my signature in the presence of two subscribing Witnesses.

HARRY M. SCI-IADEVALD.

Titnessesz S. S. WILLIAMSON, MARK BUFORD.

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