US621303A - hutchins - Google Patents

Description

No. 62|,303. Patented Mai-n14, I899. G. F. HUTCHINS.

PIGKING MOTION FOR LDUMS.

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GEORGE F. I'IUTOHINS, OF WORCESTER, MASSACHUSETTS, ASSIGN OR TO THE OROMPTON & KNOWLES LOOM WORKS, OF SAME PLACE.

PICKlNG-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 621,303, dated March 14, 1899-.

Application filed August 2,1898- To all whom it may concern:

Be it known that I, GEORGE F. HUTOHINS, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Picking-Motions for Looms, of which the following is a specification.

My invention relates to the picking-motion of a loom, and particularly to that class of picking-motions in which the picker is secured in a fixed position to the upper end of the picker-stick and the picker-stick is so supported and operated that that part of the picker which engages the point of the shuttle has a horizontal motion or a motion parallel with the lay. In this class of looms the rocker shaft or pin on which the rocker-iron of the picker-stick is secured must be parallel with the lay. Any slight variation in level of the rocker shaft or pin from its proper position will cause a variation in the parallel motion of the picker at the point where it engages the shuttle.

The object of my invention is to provide means for overcoming any variation from its proper level of the rocker shaft or pin on which the rocker-iron of the picker-stick is secured and to obtain an exact horizontal or parallel movement of the picker where it engages the shuttle in case there is any such variation. Heretofore in this class of picking-motions to which my invention relates the supporting-arm of the rocker-iron on which the picker-stick is supported has been made integral with or rigidly attached to the rockeriron, so that the position of said supportingarm relatively to the rocker-iron could not be varied.

o My invention consists in certain novel feaanism in their reverse positions; and Fig. 3 is Serial No. 687,478. (No model.)

a cross-section through the rocker-iron online 3 3, Fig. 2, looking in the direction of arrow the iron 8 and is supported thereon on a pin 10,

on which said arm has a pivotal motion to adjust the position of said arm. This adjustment is in this instance obtained by a screw 12, screwing in and out of a screw-threaded lug 8 on the rocker-iron 8, with its inner end bearing against a projection 9 on the arm 9. A check-nut 13 holds the screw 12 in its adjusted position.

After the arm 9 has been adjusted on the rocker-iron 8 it is held in its adjusted position by a bolt 14, secured to the arm 9 and passing through a hole 15 inthe rocker-iron 8, and a nut 16 is screwed onto said bolt.

The outer end of the arm 9 is connected by a link 17 with the picker-stick 18, one end of the link being pivotally attached to the arm 9 and the other end to the picker-stick 18. The lower end of the picker-stick 18 is pivotally attached to the outer end of an arm 19, the inner end of which is pivotally attached to the rocker-iron 8 by the pin 10. A fiat spring 20 is secured at one end to the upper end of the rocker-iron 8, and at its other end bears on the outer end of the arm 19 and acts as a check to receive the shuttle and also as a check to the forward motion of the pickerstick.

A spring 21 is attached at one end to a collar 22, fast on a rod 23, and at its other end, through a strap 24, to the lower end of the picker-stick 18, and acts to draw the pickerstick into its outer position at its upper end, as shown in Fig. 1, in the usual manner.

The lug-strap 26 is connected at its outer end by a loop 2'7 to the picker-stick 1S and at its inner end to an arm 28, fast on the pickershaft 29, mounted to turn in bearings 30, secured to the loom side 1, in the usual Way.

The inward movement or rocking of the picker-shaft 29, through arm 28 and lug-strap 26, will cause the picker-stick 18 to move inwardly as far as the strap 32 will permit and will cause the picker 31 to have a parallel motion at the point where it engages the shuttle.

If the rocker shaft or pin 3 is not at its proper level, the rocker-iron 8 Will be out of position, and this variation of position will be multiplied at the upper end of the pickerstick, so that the picker 31 at the point where it engages the shuttle will not have a horizontal or parallel motion. Therefore if the rocker-iron 8 and supporting-arm 9 are made rigid or integral the position of the rocker shaft or pin 3 will have to be adjusted or It will be understood that the details of construction of some of the parts of my improvements may be varied, if desired.

Having thus described my inventiomwhat I claim as new, and desire to secure by Letters Patent, is

In the picking-motion of a 100111 of the class described, the combination with the rocker shaft or pin, the rocker-iron fast thereon and the picker-stick pivotally attached at its lower end to the outer end of an arm, and said arm pivotally attached at its inner end to the rocker-iron, and a flat spring attached at one end to the rocker-iron with its other end bearing on the outer end of said arm, to act as a

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