US825309A - Picker-check for looms. - Google Patents

Description

No. 825,309. PATENTED JULY 10, 1906. M. P. FIELD. PICKER CHECK FOB. LOOMS.

APPLICATION FILED SEPT.22. 1906.

NINGTON. n. c.

MILLARD F. FIELD, OF WINTHROP, MASSACHUSETTS.

PlCKER-CHECK FOR LOOMS- Application filed September 22, 1905.

To all whom it may concern:

Be it known that I, MILLARD F. FIELD, a citizen of the United States, residing in im throp, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Picker-Checks for Looms, of which the following is a specification.

This invention relates to a new and improved checking device adapted to be applied to the lay of a loom and operating as a direct check for the picker-stick.

The invention has for its object to provide a check which will produce the desired increasing resistance on the return or backward motion of the picker-stick and a less resistance on the forward motion thereof, which will prevent rebound, which will be economical with regard to the wear on the stick and with respect to its own durability, which will be simple in construction and easily replaced, which will require no oil, and which will be easily applied and adjusted.

The nature of the invention is fully described below and illustrated in the accompanying drawings, in which Figure 1 is a front elevation of one end of the lay and adjacent parts of a loom, showing my invention applied. Fig. 2 is an inverted plan of the check removed. Fig. 3 is a section taken on line 00, Fig. 1, looking upward, with the stick in its backward movement returning to the check. Fig. 4 is a similar section with the stick in its normal position before the start.

Similar letters of reference indicate corresponding parts.

arepresents the lay; b, the end iron thereon; c, the shuttle; d, the shuttle-back; e, the picker, and g the picker-stick, all constructed as usual.

My improved check comprises a frame, a strap of leather, leatheroid, belting consisting of the combination of leather and rubber or other suitable flexible material, adjustable clamps for holding the flexible strap in position, and a spring.

it represents the frame, formed with an upwardly-extending plate 7c, adapted to be secured to the lay in the position illustrated by suitable screws f, and with the downwardlyextending legs l at the opposite ends of the frame.

n represents the strap, made of thick flexible leather or other flexible material, and 1) p Specification of Letters Patent.

Patented July 10, 1906.

Serial No. 279,640.

are clamping-plates, which hold the opposite ends of the flexible strap tightly and adjustably between them and the legs l by means of suitable bolts 1" and nuts .9.

At one end of the check a spring 1) is located behind the strap and is secured between the leg 1 and the clamp 11 at that end, said spring being of suitable shape to extend from the said clamp along the inner or rear side of the strap, holding said strap normally outward and having its bearing end bent inward at w to prevent it from sticking into the strap. The spring illustrated is perhaps the best in shape for the purpose; but I do not confine myself to its exact construction, as any shape which is suitably formed to hold the strap outward yieldingly will answer the purpose.

In operation the picker-stick on its backward motion presses the strap a back or inward in the manner indicated in Fig. 3, said strap bunching up before it, as illustrated in said figure, and providing a gradually-increasing resistance until approximately the end of a stroke and then holding the stick from rebound. Then the stick starts from the position indicated in Fig. 4 on its forward movement, the resistance is much less. This is because the spring is located at that end of the strap which is approached during its backward movement, and the stick crowds or forces said strap against the spring at its free end, as illustrated in Fig. 3. On the forward movement of the stick there is no opportunity for such resistance as the bunching up produces, because the strap will not bunch near the beginning of the movement of the pickerstick, as the inner end of the spring is too far from the farther clamp p. The resistance, therefore, to the forward movement of the picker-stick is simply that of the surface of the strap supported by and of the same shape as the spring, 'hile the resistance during the backward movement is provided by the surface of the strap, the strength of the spring, and the bunching up of the strap between the stick and the clamp p in front of it as it advances.

It is evident that the employment of leather or its equivalent provides a checking means which is exceedingly durable, which will not rapidly wear out the stick, and which requires no oil. By means of the clamps c it is easily applied, adjusted, and replaced. The spring is sufficiently stiff to hold the strap in the projecting shape desired and to provide the exact requisite amount of resistance in the path of the picker-stick.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a picker-check for looms, the combination with the lay and picker-stick, of a frame secured to and supported by the lay,

and a flexible strap secured substantially horizontally at its opposite ends to said frame and projecting. out therefrom between said ends into the path of the picker-stick, whereby the said sitck in its backward movement causes the strap to bunch up before it and provide a gradually-increasing resistance.

2. In a picker-check for looms,,the combination with the lay and the picker-stick, of a frame secured to and supported by the lay, and a flexible strap secured substantially horizontally at its opposite ends to said frame and projecting out therefrom between said ends into the path of the picker-stick, and a springextending from said frame and bearing against the rear or inner surface of said strap, whereby the said stick in its back.- ward movement causes the strap to bunch up provide a gradually-increasing horizontally at its opposite ends to said frame and projecting out therefrom between the ends into the path of the picker-stick, and a spring extending from said frame and bearing against the rear or inner surface of said strap at a point beyond the center of the strap as the stick advances in its backward motion, whereby the strap bunches up before the stick in its backward motion providing an increasing and relatively great resistance but aifording a much less resistance to the stick in its forward movement.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY W. WILLIAMS, A. K. H001).

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