US69974A - George crompton - Google Patents

Description

@uitrit 'tetes @anni @fitta GEORGE CROMPTON, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN WEET-STOP-MOTION FOR. LOOMS.

tite Stimuli maar in in these tttirs nteut mit mating am ni its stmt.

TO ALL WHOM IT MAY CON CERN:

Be it known that I, GEORGE CnoMrToN, of Worcester, in the county of Worcester, and State of Massal chusetts, have invented an Improvement in Looms; and do hereby declare that the following, tak'en in con nection with the drawinos which accompany and form part oi'V this specification, is a description of my invention sufficient to enable those skilled in the art to practise it.

The invention relates to the construction and arrangement of mechanism in looms for automatically stopping the loom whenever the shuttle-thread or weft breaks, and the invention consists in the employment of a serios of ngers, on a tilting-arm hung upon the lathe, in connection with another set of ngers which, at each time the lay beats up, are carried dow'n into line with the first set, the chute being thrown across and directly over the rst set, so that, when the others come down upon the thread, they tend to press it down between the tilting-fingers. If the thread is whole, it will be strained so tightly over the lower fingers that the pressure of the upper ones will carry down both sets together; but if the thread is broken, then the upper set carries the loose thread down betweenA the lower ones without tilting them, in which position a pin, on a tail-piece projecting from the tilting-lingers, isst-ruck by a pin on a rocker-lever which carries the upper lingers, andis carried back, suchrback movement eiecting the withdrawal of a`tooth from a sliding-plate in front of the lathe, liberating such plate, which, at such liberation, moves endwise, causing another plate to which it is connected to tip, this latter plate having a hole or slot into which a pin on the shipper-lever moves if, when the lay beats up, tlie thread lis unbroken, but by the movement of which (eil'ected by the withdrawal of the tooth) itisbrought into such position that the pin on the 4shipper-lever strikes its face, throwing the lever out of its notch, thereby shipping the belt and stopping the loom; this taking place whenever the weft is broken It is in such a construction and arrangement that the invention consists, and the drawings represent the parts of a loomwith which these devices are connected, and by whichthey are operated.

A denotes a plan of the loom, B a cross-section of the same, C a front view of the hatten-bar.

a denotes the loom-frame; b the lathe, driven by the shaft c', in the usual manner; c is the hatten-bar, over which the shuttle flies; d the breast-beam. On the front'face of the bar c, at or near each end, is a slideplate,l e, the two being connected by a rod,f, and supported on teeth, g, projecting out through the bar e, and the plates are guided, as they slide, by these teethrand lguide-plates It. The plate e, at one of theilathe, is con= nected by a pin, z', with a rocker-plate, Ic, hung upon a pin,` I. This rocker-plate has a hole, m, which, at every' beat-up of the lathe, (when the weft-thread is uubrolrem) comes opposite to Vand is entered by a pin, n, on the shipper-lever o. But if,- when the lathe beats up, the rocker-plate shall vary at all from its normal position, the pin n will then be struck by the face of the plate, (instead of entering the hole m,) and the shipper-lever will be thereby pressed out from its notch. Each tooth, g, projects from a sliding carriage, 71, working through the bar c, and in this carriage a tilting-block, q, is hung on a pin', r, this block having a set of ngers'or prongs, .9, projeetingfrom its front end, and having a pin, t, projecting laterally from its rear end, as shown at B. Each carriage is pressed forward and held in normal position by a spring, tu. v denotes a rocker-lever,` hung upon a'r bracket, u, at each endof the lathe. `.lhe front arm offeach lever t' has prongs or fingers :c projecting from it, and its Vrear arm y is weightedso as to 'hold these lingers x (normally) up above the har c. The rear'end of the lever is curved downwards, or has a tail-piece, e, and, as the lay beats up, this tail-piece strikes a stud, a', (extending from a bracket or Aprojection on the frame a,) tipping up theI rear end oi' -the lever, and carrying the fingers :v down, between the ngers s, into the bar c. An arm, c', projecting down from the lever c, carries a pin, d', and, as the lay beats up, if the fingers :c go down between the fingers s without communicating any movement thereto, this pin d will strike the pin t, on the block q, and will drag backsuch blockand-the slide p, and its tooth g, the drawing in of. the two teeth g liberating the slides'e.

The operation of the mechanism is as follows: The shed having been formed, the shuttle is thrown, and the chute passes directly over the ngers s. As the lay beats up, the 4lingers-:z: are thrown down by the lever c, striking the stud a; and, as they descend into the hatten-bar, they carry with them the thread, which, lying taut, or approximatelyso, upon the fingers s, carries them down with it, tilting up the rear end of the block q, and carrying its pin out of the path of movement of the pin d on the rocker-lever, so that no relative rear movement of theblock q or teeth g takes place. If, however, the weft-thread breaks., and lies loosely acrossv the lingers 8, or 'gives out, or does not extend across them, then the fingers x will be carried dewn between the iingers s, (as the lay beats up,) without imparting corresponding movement thereto; and then the pins d',

lstriking the pins t, drag back the slide p, and their teeth y, and liberate the slides c, which liberation allows the heavy end of the plate 7c to drop, carrying the holem outA of lino with the shipper-lever pin n, so that the face of the plate strikes the pin and forces the lever from Hts notch, causing it to spring over, shift the belt, and stoptthe loom. y

I claim, in combination with the sets of ngers or prongs between which the chute passes, the mechanism by which, through their action,l the shipper-lever is released when the thread is broken, substantially as set forth.

i GEO. CROMPJON.l

Witnesses:

HORACE WYMAN. J. A.' WARE.

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