US74938A - Improvement in looms - Google Patents

Description

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WILLIAM J. QUINN, OF PHlLAD-ELPHIA, PENNSYLVANIA, ASSIGNOR FURBUSH dt GAGE, OF SAME PLAGE.

LettrsPatent No. 74,938, dated February 25, 1868.

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TO A LL WHOM IT'MAY-CONCERN:

Be it known that I, WILLIAM J. QUINN, of Philadelphia, Pennsylvania, have in vent'ed an Improvement in Looms; and I do hereby declare the following to be a full, clear, and exact'description 'of the same.

Myinvention relates to improvements in drop-box looms, tl1e said improvements consisting ofdeviccs-'ullyv described hereafter, by which thev threads from the shuttles above'4 and below the operating-shuttle shallA not interfere with the free action ofthe i stop-motion. l 4' In order to enable others skilled in the art to make and'nse my invention, I will now proceed to describe its construction and operation,'re`erence being had to the accompanying. drawing,vwhich forms a, part of`th'is specication, and in which V' Y j V 4 Figure 1 is a front elevation, partly in section, of suilicient of..a drop-.box loom to showmybimprovement.

Figure 2, the same, showingv the operating parts in a different p osition. j

Figure 3 is a transverse sectionalelevation on the line 1-2, tig. 1'.

Figure 4 is a sectional plan view'of part of the loom; and

Figure 5 isa vertical section of. part of the loom drawnto an enlarged scale.

A A are the Vside frames, B is thebreastbeam,land C the lathe of the loom, Viat-.vibrating motion being imparted to the lathe by a crank-shaft, D, to which it'is connected by rods a d, as in ordinary looms. 4At ope'end ofthe lathe slides the usual drop-box E, in which are four con1pa'rtments,f, f1,f2, and f3, containing'th-e shuttles 6 btb 113, and which is operated by a jacquard-apparatus, a pattern-wheel, or a chain, in the ordinaryvmanner.- From the lathe-to thehand-rail cZ extend vertical wires, e e, between which projects the rodm of the 'weft-fork; one end of.v the 'rod extending into a groove in thc breast-beam B, and the other beingfconnectedto the stop'- mechanism, for arresting the motion oi the loom when the rod is moved towards the breast-beam. From the rod m project three bent wires or ngers, n n n, which are so arranged that the bars e e will pass between them, as in ordinary weft-forks, thet'ront portion of each of thesaidingers bein'gbentto the concaveform shown in fig. 5 of the drawing. That portion ofthe rod m directly beneath the lingers is bent, as 'shown in figs. 3 and, 5,

Si as to forma recess, @for a purpose described hereafter. 'lo the dropbox VE is secured a bracket, F, a crosse' piece, 0,'on which isiadaptel to and (when the box is lat the limit of its downward motion) tits' in a recess, s, rin the lface ofthe lathe adjacent to the bars e e'. On guides in the bracket F slide tub'sp p, secured at their lower ends to a cross-piece, o1, and inthe said tubes slide guide-rods q q, which are connected at theirlower. ends to al lcross-piece, o2, extending beneath the cross-piece o1.

When the drop-box is'at the limit of its downward movement, the cross-pieces o o1 o2 willbecontained within the recess s, as shown 1in iig. 1,but'when the box is raised the'cross-pieees will belifted from the recess', stops on the guides p g limiting the movement of the latter. When the drop-boi; E is inthe position shown inv .1', the' shuttle b in its movement across thelathe will carry its thread in front'of the bars ce, and over the cross-piece o; When the frame is elevated so as to bring the shuttle b1 into operation, the cross-piece o1 will be level with the face of the lathe, andthe shttle will pass and-'carry its thread 'over the said cross-piece, and beneath the cross-piece o'.v

In like manner, when the shuttle Ab2 is in operation', its thread will be carried over. the cross-piece 02, while the .thread of the shuttle b3 when the frame is at the limit of its'l u `ward motion, will be carried over the recess s, and beneath the cross-piece o2. When the'threadofany shuttle is across the bars e, and the latter vapproach Vthe/fingers n, the thread will strike the curved edges ot" the ngers, and the latter, and the rodto which they areattaehed, will be carried forward. Should the threadbreak, however, the rods c willrpass between the fingers, the latter will remain at rest, and the motion of the loom will be arrested in amannertoo well known to those familiar with the constrnction and operation of weft-forks for looms to need further description.

VrWhen a shuttle isA in operation, the threads of those shnttles which remain quiescent,and are situated above' the operating-shuttle, will pass from each elevatedshuttle over the oppositecrossfpieces and tothe edgeof the fabric, the threads being thus maintained in such an elevated positionthat theycannotbe struckby the ngers n and interfere with the 'action of the stop-motionshould the'thread of the operating-shuttle break. The threads fromthe shuttle` orA shuttles below the operating-shuttle will Passover the rod la beneath the cross-pieces in the recess s and to the edge ot' the fabric,V the recess te, formedbylthc bending of 'the rod'm, receiving these threads when the lathe is carried forward, so that they -will not strike the fingers n and interfere with the action of the stop-motion.

Although'the above-described devices may he applied to looms having drop-boxes at one, end only of the lathe,- they are especially applicable to looins in which drop-boxes are at both ends ofthe lathe, and in which it has heretofore been found dicult toprevent the threads of the shuttles not in operation from interfering `tvith the action of the stopmotion.

I claim as my invention, and desire to secure by Letters Patent- 1. s The combination, with a drop-box, of a series of self-adjusting plates or cross-pieces, o o o2, wherebyl the threads ofthe shuttles above that inoperation areheld'above the ngersof the weft-fork,substantially as and for the flurpose described. l l I 2. The weft-fork, provided with a recess, te, formed between the rod m and ngers n, as and for thepurpose specedl In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM J. QUINN. Witnesses JOHN F. GOODWIN, CHARLES HoWsoN.

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