US174714A - Improvement in wire-motions for looms - Google Patents

Description

3SheetsSheetZ. W. WEBSTER..A WIRE MOTION FOR LOOMS.

No.174,714;. Patented March14.,1a7e.

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vW. WEBSTER. WIRE Mo'ToN Foa Looms. v No.174.,714. Patented March14-,1a7s.

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WILLIAM WEBSTER, O F MORBISANIA, NEW YORK, ASSIGNOR TO WEBSTER LOOM COMPANY.

AIMPROVEMENT IN WIRE-MOTlONS FOR LOOMS..

Specification forming part of Letters- Patent No. 174,711.1, dated March 14, 1876; application filed November 5, 1875.

To all whom it may concern Be it known that I, WILLIAM WEBSTER, of Morrisania, county and State of New York, have invented certain new and useful Improvementsin Wire-Motions for Looms; and that the following, taken in connection with the drawings, is a full, clear, and exact description thereof.

In the drawings, Figure 1 is a front elevation of parts of a loom with my improvements applied thereto, the wire-box, &c., being in section; and Fig. 2 is an end elevation of the same on the wire-box side. The other figures are of details, some of them being on a large scale, and they will be described hereafter.

Prior to the date of my invention, numerous wire-'motions for looms have been devised and put in practice; and I desire especially to call attention to an early wire-motion of BigeloWs, patented May 5, 1857, and to those patented by myself in May and August,ll868, and in August, 1872. 'In the last of these there is described a latch which takes charge of a Wire from the commencement ,of the With drawal to the completion of the insertion thereof, which latch is operated by a stationary resisting-surface, being the latch herein described; and in Bigelows patent there is described means of supporting the wire in its transfer from the point of withdrawal to the point of insertion, which somewhat resembles that herein described, while in my patent of 1868 there are described spring-holders resembling the one used in my present Wiremotion.

I have invented one new element; but my invention consists, chietly, in an adaptation of or new combinations of old devices.v

In my present Wire-motion there are used a wire-box, open toward the lay, a stationary surface thereon to operate the latch, a latch, and a lay, so shaped as to clear the wire-box, all asin my former Wire motion, patented in 1872; but in this loom I dispense with the wire-trough, and use a beak-support for that endof the wire which is nearest the box while being transported, and in this loom, like my patented one of 1872, the construction and arrangementof parts are such that I can use a shuttle-box rigidly attached to the lay on .the Wire-box side of the loom.v

In the drawings the lay of the loom is represented at ct a, actuated, by preference, by cranks and connecting-rods, (see Figs. 1, 2, 3., and 6 but it maybe driven in any known Way, and it is depressed so as to work under the bottom of the wire box, and has the rear side of the shuttlebox slotted out at b b, so as to clear the rear end of the wire-box. This construction is represented in Fig. 3, which is a top view, on a large scale, of the wire-box, and a part of the lay, with the shuttle-box, and slot for the picker-staff. In lieu of this construction, I sometimes intend to use the bent-back lay of Bigelow, or other known forms oflay whichy will clear the Wire-box. The wire-box is represented atc, (see Figs. l, 2, 3, 4, and o it occupies the usual place, has va bottom on which the wire heads rest, a top to cover them, and is opened at the rear end, or that nearest the lay, so that wires may be enteredV into the shed diagonally or parallel to the fell of the cloth through the box, or may be inserted partially into the shed, and then moved sidewise into the box. Its top is shaped so as to lift the latch when the latchs nose is shoved against it, and it has a slot in the top at d, into which the hook of the latch can drop, so as to seize that wire which is to be withdrawn.

This wire-box is substantially like that described in my patent dated 27th August, 1872, No. 130,961. The latch which withdraws the wires and takes charge of them until they are inserted is represented at e, (see Figs. 1, 7, 8, and 9,) Fig. 7 showingthe latch and its spring f, inside elevation, on a large scale, with the Wire-box and spring-holder in section, and Fig. 8 being partly a top view of and partly a horizontal section through the same parts.

This latch is pivoted uponia head-block, g,4

(see Figs. 1, 7, and 8,) attached to the upper end of a long vibrating arm, h1, and the latch is forced downward by spring, f, which bears upon the latch or a projection therefrom, one end of the -spring being secured to the headblock.

Now, the wire head cannot be held during its transportation from the front end of the wire-box to the open shed by the latch alone, or even by a latch aided by a shelf below it, and moving with it, as shown at g1, (see Figs. 7 and 8,) said shelf' being part of the headblock. I have, therefore, employed a spring-v holder, k, to perform this duty. (See, specially, Figs. 7 and 8.) This spring-holder is a block of metal with a vertical slot in one end of it just large 'enough to receive freely the' end of a wire head. It slides in a recess in the head-block, and is pushed outward bya coiled spring, lc.

The operation of these parts is as follows: When the hook of the latch is moving toward the breast-beam, or forward, it is held up by the wire-box, and the spring-holder lies far back in its recess, being held there-against the force of the spring by the'ends of the boxed wire heads, over which it slides or passes. When the latch comes over the slot in the top of the wire-box its hook is forced down by its spring and takes hold of a shoulf der or nick in that wire headwhich is nearest' the breast-beam. (See Fig. 7.) The latch and head-block next move away froln the wirebox to withdraw the wire; but the springholder for a time stands still, as its spring holds its outer end against the wire heads which are in the box. The latch, therefore, pulls the wire head which it has hold of into the slot in the spring-holder, .and then the latter moves with the hook and head-block. The wire, being now in charge vof the hook,and supported sidewise by the spring-holder, is drawn out and transported rearward to the point of insertion. The head-block, hook, and spring-holder next move toward the wire-box to insert the wire, the wire being shoved in that direction by the spring-holder in its mo tion with the head-block until `this springholder brings up against the heads of those wires which are boxed. The spring-holder is then shoved into its recess by the motion of the head-block forcing the 4holder against the boxed wire heads, the wire being shoved home by the top of the recess at g, '(see Fig. 7, which shows the parts in the position of withdrawing a wire,) and the latch being lifted by its nose striking against the top of the wirebox. After the latch is lifted the wire is disengaged both from the latch aud the spring-y holder, land these, two, with the head-block,

. move toward the breast-beam, the latch being held up by the wire-box, and the spring-'holder being held into its recess by the heads ofl the' of a wire outward far enough to pull a wire out; then rearward far enough to transport the wire to the place of insertion in the open she-d; then inward far enough to shove the wire holne into the shed and box, and, lastly, forward to the point of withdrawal. Further, the out-and in motions must be suspended while the head-block moves forward lalong the boxed wire heads. When the lay has'a shuttie-box rigidly attached, the motion forward vmust be in such time, in reference to the forward movement of the lay, that the latter shall not strike the head-block.

In order to impart the requisite motions to the head-block, I have used mechanism very like that of Bigelow. The long arm hI is pivoted to a radius-bar, h2. This latter is mounted on a pin on an arm, h3, attached to arockshaft, h4. `Another arm, h5, depends from this shaft, and carries a headed pin, which is embraced by a slot in the lower end of the long arm h1. In consequence of this construction, (see Fig. 1,) the long arm and head-block can move out and in from the position shown in Fig. l to that indicated by a dotted line, and can be moved from front to rear from the position shown in Fig. 2 to that indicated by a dotted line, by the rocking of the shaft h4.

The out-and-in motions are derived from a cam, m, mounted on a counter-shaft, m1, which is driven by proper gearing, as indicated in Fig. 1. This cam acts upon a bowl or frictionroller secured upon a hanging lever, m2, which is pivoted at its upper end to the loom-frame. The lower end of the lever m2 is, by means of a connecting-rod, m3, connected to the long arm h1; consequently, as the cam revolves, the connecting-rod, (whose bowl is forced against the cam by a spring,) the long arm, and the Ihead-block move out and in, and the headblock moveshorizontally, or nearly` so, in consequence of the manner in which it is supported.

The rear and forward motions of the headblock to transport the wire are produced by `the rocking of the rock-shaft, as follows: To

this shaft is secured an arm, n, with a frictionroller on its end, which rests upon a cam, n', on the ordinary cam-shaft. The roller is held in contact with the cani by a spring, (not shown on the drawings,) and as the cam revolves the rock-shaft, and consequently the head-block, at times stands still, and at others rocks, the head-block being thus moved forward and rearward. The cams shown in the drawings will give the proper motions at the Aproper times for a wire inserted 'at every other beat of the lay.

An intelligent loom-builder can easily modify cams and gearing for other number of beats to each insertion of a wire; but care must be taken in all'cases that the head-block comes up to insert a wire while the lay is out of the way, and that it shall move forward to the place of withdrawal ota wire in advance of the movement ot' the lay to beat up when a rigidlyattached shuttle-box is used, so that the latter shall not strike the head-block. I prefer to cause the head-block to pause an instant in its forward and rearwardvmotion while the wire is being boxed, and to that end I make the rock-shaft cam of the shape shown in Fig. 2.

It is hardly necessary to direct the con` structer to make thejoints or" the connectingrod with considerable play, as such is a common device in looms 5 but they must have such play in order to compensate for the motion ot' the melf-shaft.

I have thus particularly described the meehanism for moving the head-block, but intend at times, when more convenient, to substitute therefor otherknown mechanical devices,which will impart the requisite motion thereto.

The wire in charge of the hook and springholder is held firmly at the head end, but would not by these means alone be carried with its point in proper position.

Bigelow used a fork which had an upanddown and a forward-and-backward motion to control that part of the wire nearest the wirebox, when the wire was partiallyor wholly withdrawn.. I could use, and at times intend to use, his fork in connection with my latch and spring-holder, but prefer to use a beakcontroller invented by myself, which is so constructed that it will operate properly when having motions -in two directions only-viz., forward and rearward-whereas the fork ot' Bigelow must have not only these motions, but, in addition, motions upward and downward.

This beak is shown on a large scale in Figs. 9 and 10. It is composed of two springs, nearly meeting'at their free ends, and fastened on a statt' at their other ends, the whole thing forming a pair of springjaws, and being, by preference, made ot' one piece of metal,

and the free extremities being curved, so as to guide a wire into the space between the springs.

Vhen the beak in its movement rearward reaches a partially-withdrawn wire,the springs strike the top and bottom thereof', and open, permitting the wire to pass between the sprin gs where they approach nearest. The wire is then contained between the springs, is supported thereby, and moved when the beak moves.V

When the wire is nearly boxed, the beak advances or moves away from the lay toward the breast-beam, and the springs open the wire held by the other wires in the box and by the spring-holder, escaping outof the beak by the opening of its springs. One spring in combination with a stili' rod will answer, or two jaws forced together by springs, or olle jaw and a rod.

When a beak like that shown in the drawings is used I prefer to slot the stati" horizontally, or nearly so, in order that the wire shall be guided by the springs into the slots, as shown in Figs. 9 and 10; but this is a mere refinement to hold the wire more steadily, and it can -be held ljust as steadily by properly shaping the springs ora'aws.

This beak moves forward and backward only, and its first position is sov near the breastbeam (see Fig. 2) that while going toward the lay it can grasp partially-'withdrawn wire;

then it'stands still till the wire is wholly withdrawn then moves toward the lay so far as to carry the point ofthe wire to the place ot' insertion thereofI into the shed; then pauses until the wire is partly inserted; then moves in the reverse direction, slipping oft1 the wire which is being boxed, and proceeding to its iirst position, ready to grasp another wire. Its motions must be so timed that it will grasp a wire when partially withdrawn, and let go of it when partially inserted, and when it transports the wire toward the lay it should move nearly or exactly in coincidence with the rearward motion ot' the head-block. The staft' of this beak is free to rock at its lower end upon a shaft or pin, and is provided with an attached arm, which is actuated by a cam and spring, the latter not shown 'in the drawings. As the cam revolves, the staff and beak will move toward and away from the lay, and at times stand at rest--viz., during part of the withdrawing and part ot' the inserting mo tion-and the movement being so timed that neither the head-block nor the shuttle-box or lay shall strike the beak. -The cam which actuates the beak is represented in the drawings as so shaped that the beak will work properly in a loom where a wire is inserted at every alternate beat. Th e intelligent constructer can easily modify it, so as to be used in looms where more beats intervene between the wire insertions. e

I wish it understood that the beak itself, acting as described, is of my invention, irre. spective of any special means for giving it proper motions, and that l intend to use other known mechanical means for moving and supporting it than those described, and also to use it in combination with other means than those described for supporting and controlling the wire head.

As the head-bloek might possibly tumble over on its staff, l intend at times, as a meas ure ot' precaution, to extend the connecting rod beyond the long arm h1, and pivot upon the extension another arm, w, the upper end of which is to be attached by a pivot to the head-block. Such a construction will hold the head-block horizontal, even when no wire head is contained in it.

I also intend to use at times the head-block and its appurtenances as shown by Figs. 12 and 13, which represent a side and top view of the same, as a modification of the'headf block and appurtenances Aas :shown by Figs. 7 -nnd `8.

I claim as of myown invention- 1n o loom Vl'or weaving pile fabrics, the eombilmtion, with n lever und n ben-k, having -sprin,gf-jaws for seizing'` the end of the pile wires, of meclmnism, 'substantially as described, for imparting to such lever a. vibra.-

tory motion. als `and for the purpose setl'orth.`

2. In combination with the spring-beak and operating' mechanism herein described', a. head-block provided .with mechanism for inserting and withdrawing the 'pile-Wires, its vand for the purpose set forth.

3. In combination with the head-block, the

spring-beak herein described,a.nd theispring-ll helder, the mechanism,substantially as ile-- scribed, for withdrawing the pile-wire from the wire-box, as set forth.

4. The combina-tion ofthe spring-beek, the

head-block, the spring-holder, and the latch, constructed usand for the purposes set forth. 5. lIn combination, the spring-holder, the

latch, the wire-box, the long` vibrntinf.;r arm,

(for carrying said holder and latoh,) lend mechl'anism for supporting thepoint of 'thelwire, :is

'shown and described.

6. In combination withthe head-block, the

spring-holder, the mechanism Vfor withdrawing the wires, the long vibrating arm for carryling the head-block, and Vthe-mechanism here-

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