US70308A

US70308A - Improvement in operating picker-staff for looms

Info

Publication number: US70308A
Authority: US
Publication date: 1867-10-29
Anticipated expiration: 1884-10-29

Description

f shown in the drawings.

y UNITED STATES.

PATENT OFFICE.

EDWARD WRIGHT, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN OPERATING PICKER-STAFF FOR LOOMS.

Specica-tion forming part of Letters Patent No. 70,308, dated October 29, 1867.

`clare that the following' is a full, clear, and

exact description of the same, reference being had to the accompanyingl drawings, forming a part ot' this specitication, in which- Figure l represents a perspective view of lny improved device, and Fig. 2 represents a longitudinal central section ot' the device shown in Fig. l.

To enable those skilled in thc art to which my invention belongs to make and use the same, I will proceed to describe it in detail.

The part marked Ais the slotted base upon which the tongned picker-staff stand B rests, and rocks back and forth when in operation, as described in my previous application for Letters Patent. The base A is provided with a hole, C, and set-screw a, by which itis fastened to the rocker-iron of the lay. The picker-staft is fastened in the recess D in the upright part of stand B.- The rear part of the stand B is slotted out and rounded oft' to receive the rear end, b, ot' thelever E, which has a curved recess, c, to fit the rounded part of the stand B, as fully shown in Fig. 2.

From the rear of base A projects down the arm F, having a hole in its lower end, through which the rear end of rod G phys, the front end of said rod being enlarged, so as to have shonldersf, against which the front of the spiral spring H presses, while the rear ofthe spring bears against the arm F. The front end of rod Gr is slotted or forked to tit the arm I, which extends down from the lever E, as The lower end of arm I is provided with a'lip, g, upon which the front of rod G rests.

The operation is as follows: When the picker-staft is thrown forward the front part, J, of the picker-stand B rocks down upon the base A, its tongue h entering the slot i in the base A. As the front end, J, of the pickerstand descends, the rear end, K, rises, and thereby lifts the rear end, b, of lever E, which throws back arm I, thus compressing the springr H. As

soon as the picker-staff is released, the action of spring H on arm I causes the pickerstaff to start back, thus avoiding a severe concussion ot' the point of the shuttle against the picker on the staff'. As soon as the picker-stand has passed back of theposition shown in the drawings its rear point, K, begins to bear on the end L of the base A, which causes the rear end, b, of lever E again to he elevated, thus throwing back arm I and compressing spring H, the resistance of which arrests the motion of the picker-stan", and thus prevents the shuttle from driving the picker and upper end of the picker-statt' hard against the end of the rear end ot' the shuttle-box.

The front 0I' lever E has a curved recess, d, which fits the rounded part e on hase A. (See Fig. 2.)

Having described my improved parallel mo* tion for looms, what I claim therein as new and of I ny invention, and desire to secure by Letters Patent, is

The combination, with lever E and its arm I, of the arm F, rod G, and spring H, substantially as and for the purposes set forth.

EDWARD WRIGHT.

Witnesses:

THos. H. DODGE, D. L. MILLER.