US41834A - Improvement in yarn-delivering mechanism for loomsv - Google Patents

Description

. y UNITED STATES PATENT' ottica* GEoEGE DEAPEE, oE MILEoEnMAssAcEUsETTs.

-To all whom it may concern: t

Beit-known that I, GEORGE DEAPEE, a resident of Milford, in thecounty of Worcester and State of Massachusetts, have invented a new and useful Yarn-Delivering Mechanism for a Loom for Weaving; and I do hereby declare the same to be fully described in the following specification, and represented in the accompanying drawings, 'of which- Figure l is a top view, and Fig. 2 an end elevation, of my said invention, as applied to the yarn-beam and sundry other parts of a loom-that is, those with which it is most intimately connected. Fig. 3 is a vertical seetion, not only of the gravitatin g catch and the arm which carries it, but of the lever-pawl directly under it, they being hereinafter described. Fig. 4 is a cross-section of the loom, it beingi taken in a plane between the yarnbeam and the cranked shaft of the lay, and so as to represent the ratchet and other portions of my yarn-deliverin g mechanism. Fig. 5 represents another of the modes in which I have contemplated the 'application of' `that principle of my invention or that character bywhich it may be distinguished from others for similar purposes.A

Thenature of my invention, in part, as hereinafter described, is a combination of mechanism consisting of a ratchet, a pawl, an arm or lever, and a gravitatingy catch, a weight, and a mechanism or device by which the said ,arm of the gravitating catch and the said pawl are operated by the said weight and by certain mechanism of the loom in manner substantiantially as hereinafter described.

Furthermore, with my said mechanism I have combined a stopping mechanism to be operated by the-lay, while the latter may be in theact of beating up77 or driving a lling or weft thread close up into the warp or to the wovencloth during the process of and for the purpose `of weaving cloth. This additional mechanismand the mechanism .hereinbefore referred to constitute a combination, not only novel, but very useful in many respects. In a patent recently granted to me I have repre# sented this additional mechanism, or its mechanical equivalent, in'combination with an escapement77 detent-lever, its whee1,.and certain apparatus for operating'such detenta-lever, the object ofthe stopping mechanism being to prevent the beat of the reed of the lay against Specification forming part of Letters Patent No. 41,8311, dated March 8, 1864.

the cloth from operating to cause the let-off 'mechanism to deliver yarn from the yarn beam faster than may be desirable in the process of weaving, the said stopping mechanism not only completely arresting the action of the let-off mechanism at the period of theA beating ofthe reed against the woven cloth,-

but on recession of the lay permitting the said let-off mechanism to be operated bythe-l strain of the warps and cloth.v A

. It should be borne in mind that the mech-44 anism with which the stopping mechanism is.

combined is not an escapement let-oft' orde livery mechanism in which an escapement-- wheel and a detent-lever furnished with two` pallets constitute a material part, as in my' apparatus or mechanism no such escapement- `wheel and detent-lever are employed, asl I" make use of a simple ratchetwith two paw1s,` and by such attain advantages not incident to theescapement let-oli' mechanism. In fact,

not only is my apparatus different in its construction, but differs in its operation with respect to the escapement let-olf mechanisms77 now in use, these differences serving to produce a better delivery of the yarn, as well fas a nearer approach to the attainment of uni formity of tension of the warps.y r

In Figs. 1 and 2 0f the drawings, Adenots a loom-frame ofthe ordinary kind, while B is the breast-beam, C the lay, and D the yarnk-` beam, thereof. The cranked shaft for operatbeam D to the reed and breast-beam lthe warps: pass over and upon a guide, F, which is a vlong cranked rod, whose journals are supported within the opposite standards, d d,"of

the frame, such guide being so'formedl thatV while the warps may be passing across kit the",

pressure of the warp upon it, induced by the take-up mechanism and the operations of the lay, shall cause the guide to turn,so yas toim1 l part motion to an arm, d, carriedvby and eX-y tending from one of the journals of such guide',-

as shown in Figs. -1 and 2.

A gear, f, aftixedon the shaft of the yarnbeam, engages with a pinion, g,`applied and fastened to' the innerend of a short shaft,h,

on whose oppositeend there is affixed a ratchet,y i, the said shaft'h ybeing supported byan'd soas to be capable of freely revolving within a standard, a', projecting upward frozn one ot the girts or cross-bars ot' the loom-frame.

From the arm d, and at or near its outer extremity, a rod, 7c, depends, such rod, at its lower part, being jointed or hinged to the outer end of a pawl or lever-pawl, l, which in Fig. 2 is represented as jointed or hinged at or near its middle to an arm, m. (Shown separately in. side viewin Fig.` 6.) The said arm m issupported at or near one extremity ot' it on a stud or fulcrum, n, projecting from the loom-frame; and, furthermore, the arm is constructed with a cross-head, o, arranged at an obtuse angle with it and applied to its opposite end, the same being as shownin Fig. 6.` This head serves to carry and guide a gravitating catch, p, which is to be so applied to the `head as to becapa-ble of freely sliding upward and downward thereon and relatively tothe periphery ofthe ratchet t', with the teeth of which the catch is to operate. y

The gravitating catch is made with a slot, y, to receive a screw or pin, z, which passes through the slot and enters and is tixed in the head of the arm m, the head ot' the pin,

by overlapping the slot, serving to keep the gravitating catch` in `conjunction with the arm. `The catch should be capableof playing loosely upward and downward on the said pin, and when elevated to its highest position the catch is estopped by the lower end of the slot, ,the upper end of the slot likewise serv.- ing `to stop` the catch when it may be at its lowest position on the head of the arm.

There is a weight or series, r, of weights strung on or aiixed tothe rod lf. The ratchet ,tthe pawl l, the arm in, the gravitating catch p, and the weight o, arranged together andcombined with the guide F and the yarnbeam, by means substantially as herein described, constitute my `new yarndelivering mechanism. In Fig. 5 the several parts of sucha yyarn-delivering mechanism are represented under a somewhat different arrangement and construction, the parts of such iigurewhichcorrespond with those represented in Fig. 2 being denoted by like letters of rei?i erence, the main differences in construction and arrangement being as follows-that is to say: The leverpawl l, instead of being above the, ratchet t' and hinged to the arm m, is placed beneath thc'ratchet, is supported on a stationary pin or t'ulcrum, s, and has a Weight, t, or its equivalent, applied to it to force it up into Contact with the periphery of the ratchet.

The rod lc passes down through the arm m and the pawl l or projections therefrom, and so as to lie-,capable of slidingtreely through them.`

There arebuttons 'v v xed on the rod lc, one

ofdthese` buttons being directly underneath:

and close to the arm on, while the other is directly-over and close to the 'pawl I, the whole being as shown in Fig. 5.

The pressure of the yarn on the guide F` tends to depress it, andthereby raise or move the arm d, in which case the arm m and the A gravitating catch p will be raised so as to elevate the said catch out of action with a tooth of the ratchet, and otherwise move it in such manner as to allow it to slip into action with a succeeding tooth or over 011e or more succeeding teeth and into action with the.

4beam will be revolved until brought to a stand by the gravitating catch, which will be forced upward on its pin until the lower end oi the slot of the catch comes into contact withthe pin. In this way the yarn-beam will be made to deliver its yarn, and in such manner as to cause the tension on the warp to be uniform as well when the beam may be full as when it may be nearly empty ofyarn.

In combining with the said yarn-deliverin g mechanism a stopping mechanism of the naturehereinbeforedescribed,Iextenddownward from of one the journals of thevyarn-guide F or from the heel of the arm d another arm, a', which I connect to another vibrator-y arm, b, applied to one end of the loom-frame and a1"- ranged with respect to the lay as shown in Fig. 2, by means of a connectingrod, c', jointed to botharms. To thelay a projection,

e', is affixed and extended therefrom, as'

shown in Fig. 2.

From the` above it will be seen that when the beat of the lay takes place againstthe cloth the projection e', the rod c', and the arm b' will operate to hold the yarnguide F firmly in position and prevent it from being depressed by the strain on the warps, caused by the beat of the lay. Such depression, if allowed to take place, would be likely to create more or less action ot the yarn-delivering mechanism, whereby the yarn would be delivered out of time.

\ I .claim- `LlWysaid yarn-delivery mechanism or combination, substantially as described,`the same consisting of the ratchet t', the pawl l, the arm m, the gravitatin g catch p, and the weight r, or their mechanical equivalents, combined with the guide F and the yarn-beam, substantially in manner and so `as to operate as hereinbefore specified.

2. The combination therewith and with the lay, in the manner substantially as described, ofthe stopping mechanism, to operate as and for the object hereiubef'ore explained.

3. The gravitatin g catch and its armor carrier, to operate together and with the ratchet,

`substantially as specified.

GEORGE DRAPER. Witnesses:

R. H. EDDY, F. P. HALE,J1.

Images