US154837A - Improvement in loom-temples - Google Patents

Description

UNITED STATES PATENT OEEICEc NATHAN CHAPMAN, or vHC'PEDALE, MASSACHUSETTS.

IMPROVEMENT IN ALOOM-TEMPLES.

i Specification forming part of Letters Patent No. 154.837, dated September 8, 1874; application filed May 22, 1874.

To alli/whom it may concern:

Be it known that I, NATHAN CHAPMAN, of Hopedale, in the county of Worcester and State of Massachusetts, have invented certain new ,and useful Improvements'in Loom- Temples; and I do hereby declare the following to be a full and exact description of the saine, reference being had to the accompanying drawings, forming part of this specification, in whichj Figure l is a top-plan view of my improved temple. Fig. 2 is a side elevation. Fig. 3 is a similar elevation, showing the slidingframe retracted. Fig. 4 is a section through line .r w, gig. l; and Fig. 5 a section through line y y,

Similar letters of reference in the accompanying drawings denote the samev parts.

' My invention has for its object toimprove the construction of loom-temples; and to this end it consists, rst, in providing the sliding s spring-frame holding the toothed roll with a suitable detent, adapted to engage with a projection on the adjustable frame when the 'spring-frame is pushed back, the latter being held thereby in a retracted position. It consists, secondly, of the means employed for connecting the sliding frame holding the toothed roll to its adjustable frame, all of which I will now proceed to describe.

In the drawings, A represents the adjustable frame of a loom-temple, said frame being provided with dovetail sidesyisliding between corresponding guides C C in a transverse plate, B, the latter being suitably attached to the frame of the loom. The guide C of the plate B is rigidly attached to the latter, while the guide C is composed of a detachable gib, attached to the plate by a screw, D. The edges of the gib C are inclined inward from the upper to the lower side, so that the crosssection of the gib resembles a truncated wedge, one edge of which bears against the dovetailed side of the frame A, and the other against the inclined face of an oifset, E, on the plate B, as shown in Fig. 5'.

When the screw D is loosened the gib C releases its hold on the frame A, the latter being allowed to slide between its guides until suitably adj usted. The screwis then tightened,

this operation crowding the gib C against the frame A, as will be' readily understood, the frame A being thus tightly clamped between the gib C and guide C.

F represents the sliding spring-frame, holding the toothed roll G, the latter being constructed and arranged in the usual manner. The frame F is provided with a longitudinal recess, H, the ends of which are formed by abutments h h', as shown in Fig. 4. I is an abutment or guide formed on the rear end of the adjustable frame A, and projecting upward into the recess H of the sliding frame. AAJ is a longitudinal rod or bolt extending through the recess H longitudinally, its inner end entering a socket in the inner abutment h, while its outer end is suitably secured to the outer abutment h. rlhe` guide I is interposed between the abutments h h', and has an orifice of suitable size to receive the rod J and allow it to slide freely. The frames A F are thus connected and prevented from separation. K is a spiral spring surrounding the rod J, its ends bearing against the inner abutment h of the sliding frame F, and the guide I of the adjustable frame A, said spring forcing the sliding frame, with its toothed roll, forward toward the lay, its forward motion being limited by a lug, L, which bears against a shoulder, M, on the frameA. N represents a rectangular guide, located on the front end of the adjustable frame A, and inclosing the sliding frame F, as shown in Fig. 4. The-front end of the frame F is depressed so as to form a shoulder, O, which projects beyond the guide N, when the frame F is in the position shown in Figs. 2 and 4, in which it is held by the spring K, this being its position when the toothed roll is adapted for operation.

When itis desired to suspend the operation, and move the toothed roll back from the lay for any purpose, the frame F is pushed back until its shoulder O passes through the guide N, when, by lifting the front end slightly, said shoulder is caused to engage with' the guide, as shown in Fig. 3, the pressure of the spring holding the shoulder against the guide with Sutlicient force to retain the frame in this re tracted position. By depressing the front end the shoulder O is disengaged from the guide, and the frame allowed to spring back to its former positionr It will be seen that the adjustment of the frame A is easily ei'ected by means of the gib C', it being onlyT necessary to loosen the screw D to release, and tighten it to secure, the frame. The offset or wall E assists the screw in holding the gib against the adjustable frame, thereby materially strengthening the construction.

The manner of vconnecting the sliding frame F and adjustable frame A is simple and ef- Iicient, the sliding frame being allowed free longitudinal play, and securely held and guided.

Having thus described my invention, what I claim as new is 1. The recessed sliding frame F, having the*l rod Jy and spring K, in combination with the adjustable frame A, having theguide I, s ubstantially as described, for the purpose specified. v

2. The adjustable frame A, having the guide NATHAN CHAPMAN,

Witnesses:

- JOSEPH WHITAKER,

MOSES HoBART.

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