US158775A - Improvement in picking mechanisms for looms - Google Patents

Description

UNITED STATES EEioE.

PATT

BENJAMIN F. BEAN AND CHARLES H. FARNHAM, OF MANCHESTER, N. H.

IMPRovEMEN-r IN PicKiNe MEcHANlsMs Fon Looms.l

Specification forming part of Letters Patent No. 158,775, dated January 19, 1875 application filed v November 16, 1874.

To all whom it may concern.: p

Be it known that we, BENJAMIN F. BEAN and CHARLES H. FARNHAM, both of Manchester, in the countyof Hillsborough and State of New Hampshire, have invented certain Improvements in Picking Mechanisms for Looms, of which the following is a specifimention:

- jection, thetwo acting together' to eifectually retain the rocker in proper position on its bed, and prevent it from jumping when the stick is in its forward position. Also, in the combination, with such a rocker and bed, of' a spring constructed as hereinafter described, and connected, by means of a band or strap, wi th the rocker.-

`Figure lis a side elevation of our invention with a portion of the frame broken away. Fig. 2 is a section on line a' or, Fig. 1, showing the spring and its holder. Fig. 3 is a top view of the forward part of the rocker; and Figs. 4 and 5 are modifications of the construction of the guiding projection.

A is the bed or frame of the picker-motion, having at both sides flanges A3 rising from the top of the bed. The left-hand portion A2 ofthe frame A has slots a2 a2, through which, by means of suitable bolts, the frame may be attached to the swords of the lay; but instead.

of these slots the frame may have a socket to fit the lay-shaft, or be secured in any Wellknown way. The frame A has also at each side two guide-posts, c c, with curved concentric faces, forming between them a curved way, D, which receives the end of a guiding projection, c, attached to, 4and preferably cast on, the rocker G at or near its forward end. This rocker has a vertical portion, B, cast with a socket to receive the lower end of the pickerstick in the usual manner, and on the rocker is also cast a hook, b, to receive a strap or band, d, connected at its other end with the outer free end of spring E that produces the back motion of the picker-stick. At the lower side of the bed or frame is a hanger, A1, provided with projections d to enter notches or recesses formed in the end of the Wooden or other core G. This core has bearing against its other end a washer or plate, H, having pins hf to enter the core, and also a slot to receive the inner end ofthe spring E. (See Fig. l.) A bolt, I, having a square shank next to its head, receives on such squared shank the washer H; then the bolt passes through the core, and through an opening iu the hanger A1, and is there secured by a nut, the end of the bolt being threaded. The coiled portion El of the spring E is placed about the core G, and the end of the spring next the coil is hooked into the slot in the washer. The projections d and pins h enter the core, and prevent it from turning, and keep the parts A1,

G, and H from moving one on the other when locked together by the bolt I. To adjust the force of the spring E to properly move back the rocker and picker-stick, the bolt I may be loosened, and the core and Washer turned to any desired position, and they maythen be again secured. To the frame or bed is attached, by means of a suitable bolt, b2, a slotted adjustable arm, F, having at its upper end an elastic stop or check,f2, of rubber or leather, or a spring-plug might be used instead. This stop is placed or adjusted with reference to the toe of the rocker, so that when the picker is nearly at the end of the slot in the lay in which it Works, the toe of the rocker will strike it, and the picker-stick will be kept from striking the lay at the back end of its slot. When the shuttle strikes a picker-stick resting against the lay, the blow is sharp and hard, and the cop has a tendency to come off or become tangled; but when the shuttle-tip strikes a picking-stick, checked as described, the stick yields through the elastic stop to the blow of the shuttle, thereby easing the force of contact between them, and not disturbing the cop, as usual. This is of great importance, and by adjusting F o r f2 the check may be brought into action sooner or later, as desired. Rockers are sometimes liable to jump up and leave the bed or frame when the shuttle is being thrown across; but this we prevent by means of the curved Way D and the guiding projection c. When the picker-stick is in its forward position, and the guiding projection c is at the bottom of the curved way, the rocker cannot jump up, because the face a of a overhan gs the guiding projection, and it cannot rise therein, except as the rocker moves back in its proper course, as shown in Fig. 1. This guiding projection c is preferably cast on the rocker, and formed oval, and to t the guideway D at each sid e, but so as to move freely as the rocker rocks on the frame A; and it also prevents the rocker from moving longitudinally on the bed or frame. This piece c may, however, be otherwise constructed, as, for instance, (see Fig. 4,) the ends l may be pivoted to the piece c by pivots o, and the sides of the pieces l may be the one concave and the other convex to t the parts a, a, or these pivoted ends may be oval, as shown in Fig. 3; or the part o, Fig. 5, may be cast tubular, and the end pieces lmay be attached to a shaft, m, by nuts n. The spring for throwing the picker-stick back is shown at E. It is a stift' but adjustable wire spring, and its outer end has a hook to enga-ge a short strap,

d, that hooks on a hook, b, at the back portion.

of the rocker. This spring is stift', and acts silently and quickly, and enables us to run a picker at much greater speed than heretofore; andwe are enabled to get, in our opinion, a much easier and better motion, by extending this spring back at or near the end of the rocker, than is the case where a coiled spring is used without the long end E. The curved slot or way might be made in the rocker, and

the guiding projection be attached to the bed; but we prefer the construction shown. The picking-stick and rocker may be Jthrown forward in any well-known manner.

We claiml 1. The combination, with the rocker and its bed, of an elasticstop, adapted to operate in connection with the rocker, substantially as and for the purpose set forth.

2.' The rocker and its guiding projection located near its forward end, combined with the bed, having a curved guiding-way and side flanges, substantially as described.

3. The combination, with the rocker, constructed as described, its strap, and the frame or bed, having side iianges, of the long adjustable spring E, extending horizontally along under the bed or frame, and terminating at or near the back end of the rocker, as set forth.

4. The combination of the bolt I, square next to its head, the slotted washer, having pins h', the core G, and the hanger A, provided With projections for adjusting the force of spring E, as set forth.

5. In combination, the flanged bed or frame, having curved guiding-way., the arm F, and check,- and the rocker with its guiding projection, all substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing' Witnesses.

BENJAMIN F. BEAN. CHARLES H. FARNHAM.

Witnesses:

E. R. RICHARDSON, B. I. CILLEY..

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