US111278A - Improvement in looms - Google Patents

Description

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nAMlLroNJ n. Towns, or NEWARK, KNEWn J'nnsnr.`

Leners Patent No. 111,278, dated January 24, 1871.

IMPROVEMENT IN LOCMS..

The Schedule referred to in these Letters Patent and making pari:v of the same,

TJ/wizom it may conce/rn.

Be it known that I, HAMILioN E. Towne, of the city of Newark, county of Essex and State of New Jersey, have invented a new'- and useful Improvement in Looms, of which the following is a specification.

, This improvement relates more particularly to the Jacquard or mechanism forzoperating the harness, and

`its object is to con-struct a simple and cheap Jacquard, that may be used for each separate chain of warps-in looms for weaving narrow goeds,` instead of 'operating all the chains by a common4 harness, so that, should any obstruction occur to theA weaving in the web, all the others will operate and it only be stopped, thus saving very mucl1.time.

The nature of this invention is as follows The harness, or that arrangement which 4carries the warp of the fabric, is attached by rods or cords to lifting hooks; these lifting hooks"'arey joined together in pairs by a hinge or wrist through a hinge-plate, to which plates, as forming part of the pair of hooks, the

harness is attached by means of/the rods and cords aforesaid. The pairs of hooks,.,of which there may be any number, according tothe work intended to be performed, are arranged in a row between two patternrollers or pattern-wheels, against which they rest, each hook being kept firmly against its rollerv by a spring between it and its mate, which rests against theopf posite roller. Each of the two rollers'receives an independent rotary motion, which may be given by means of a pawl and ratchet or otherwise.

O11 the rollers where they cornein contact with the hooks are placed small screws or projections, which, as each roller rotates, press against the hooks, so as Yto push 'them away from the rollers, at any point desired, in order' that they may not engage with the-lifters hereinafter described.

. The 1ifters,fof which there are two, one foreach side of the row of hooks, consist ofa hook-formed blade, broad enough to engagewith all lof the hooks on its side of the row fastened to avertical rod. These vertical rods, there being one on each side, are united by chains working around pulleys, or simply by working-beams above and below. A vertical reciprocating motion is given to the rods, which causes the lifters to alternately ascend and descend, and eugagewith the hooks, (except such as may' be thrown out of their reach by the projectionsor cams on the patterni rollers,) and by this means to raise and lower the har-y ness positively in both directions, or by weights or springs attached to produce motion in one direction, to draw it up or down steadily. j Description of the Accompanying Drawing. Figure 1 is a front elevation of the mechanism; Figure 2 is a side elevation; y

`Figure 3 is a vertical section through the v patternrollers; V

Figure 4 is a View of the working-beam' removed from the machine Figure 5-is a plan of onaof the litters and. Figure G is a planv of the, guide for the lifting rod. Genera-l Description.

A and A are the lifting rods, which are connected by chains d and-d workinghupon four pulleys, p p and' pfp', two at the top and two at the bottom.

B is the eccentric, and4 C is the connecting-rod, ,which operates the lifting rod D and D' are the liftersii1s,tened to the lifting rods and A by collars and setfscrews for lifting the hooks O and O' are arms projecting from the lifting rods A. and A', forthe vpurposeof operating 'the' workingbeam L. The projecting arms are so arranged that as thc rod A descends, the arm O -w'ill strike the working-beam L in the hookmade to receive it, and depress that end of the beam with its pawl M'.

G and G are' the pattern-rollers or pattern-wheels, and

11x11. are pins or teeth, of which there are eight or more on `the end of each roller, with which the pawls M `and M engage, thus giving alternately to each -of thesaid rollers a-i'otary motion of one-eighth of revolution at each alternate descent ofthe lifting rods and' lifters..v The part of a revolution made by the rollers may be more or less according tothe length and position of the working beam and the number of pins on theends of the rollers. V

R and R are friction-washers, held on by-a nut or pin, which, by means vof the friction produced,l pre-l vent the rollers G and G' from turning back by the friction of the pawls M and Mcn the pins n 'n in ascending. Y

In the rollers' G and Gr' opposite each hook, and corresponding to the part of arevolution which the roller makes at each descent of the lifting-rods and litters,- are placed s'mallscrews with projecting heads lr lr, which act as Canis to press upon the hook-arms-e c and throw the hooks E Ef'away from the lifters D and D. Therefore, at each point, when it is desired that the hook should remain down, a screw is put into the roller.' instead of these screws the rollers may have permanent projections creams formed upon them to answer the same purpose, but 'the screws are preferred, for, whilei screws perform theofce of solid cams, they can also easily be changed about, so as'to act at different `times as the pattern-rollers turn and the action of the hooks altered by .this simple expedient of changingthe number and position of the screws on the rollers.

The rollers receive their motion from opposite endsof the Working-beam, and are entirely independent of each other. As one end of the working-beam with its pawl is depressed, the other isolevated, and the pawl set' for the next'pin on the roller, the pawls being kept i'n proper position to engage the pins bythe spring S.

The hooks E E' are arranged in pairs upon the hook arms e e', 4hinge-jointed at the bottom to hinge-plates H, each by a single pin or rivet, i.'

k is a spring, which serves to keep each pair. of

hooks pressed; steadily apart against the rollers G and G', and in a position to be raised by the lifter imless thrown o r kept ont of the reach of the lifter by one of the screws lr c', or equivalent. To the hinge-plates H is fastened, by means ofthe rods or cords t, the harness YV. Below the harness, fastened either to the floor or some stationary part of the machine, are weights or springs P, which lserve to draw the harness and hooks down after being raised by the lifters.

T is a platform, which serves as a rest for thehingeplates H H when they are down, and through which the cords or rods tpass. t

Great advantage is obtained by combining and joining the hooks E E in pairs, inasmuch as by a proper arrangement of the screws o' r on therollers G and G', the warp may be kept raised up or remain lowered while the shuttle makes one, two, v.or more passages,

or the various parts of the Warp may even be kept continually changing positions according to the fabric of hooks and keep them in their properverticalposition, and also opposite the screws fr fr, which are in tendedto act npo'n AVthem. These plates 'are `held in` position by being iitted into grooves g g in the rollers Gand G. l

F is a guide for the lifting rod A, to resist its' tendency to twist, which'oceurs whenever it happens that the hooks are so operating as to bring the weight ot" the harness unevenlyupon the lifter. The guide consists of a bent arm fastened firmly at one end to the lifting rod A by a set-sere\v, b, and having at the other YendV aY forkfe'f, whiehwcan sliderllpand downuponl-a guide-rod or upon the opposite lifting rod A'.

Y Gitti/ms.,V 1. The lifting hooks hinged together, operating in pairs, and connected with the harness-frames, in com- 3. The' harness-frames, thehinged lifting hooks, thepair of pattern-rollers, andlvibrating'beam, with pawl arms and the reciprocating litters, all constructed and operating together substantially as described. Signed this 19th day of April, A. D.1870.

HAMILTON E. .IOWLE.v

Witnesses F. A. LEHMANN,

Taos. S. MERCER.

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