US748084A - Pile-fabric loom. - Google Patents

Description

N0 MODEL.

PATENTED DEC. 29, 1903.

P.- & E. LEROUX.

' PILE FABRIC LOOM. I APPLICATION FILED APR. 30, 1902.

2 SHEETS-SHEET 1.

' m: NORRIS PETERS coy. mcraumou WASNINDTON, u c.

PATENTED DEG.'29, 1903.

P, & E. LEROUX. PILE FABRIC LOOM.

APPLICATION FILED APR. 30. 1902.

2 SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES A iatented l c'ember 29, 1903.

PATENT OFFICE.

PILEH'FABRIC LOO M.

SPECIFICATION forming part of Letters Patent 0. 748,084, dated December 29,1903.

Application filed April 30, 1902.

To aZZ whom it may concern:

Be it known that we, PAUL LEROUX and EDMOND LEROUX, citizens of the Republic of France, and residents of Roubaix, (Nord,) France,have jointly invented certain new and useful Improvements in or Connected with Looms for the Manufacture of Face-to-Faee Pile Fabrics, of which the followingis a specific'ation.

The improvement which we have edected in looms for weaving face-to-face pile fabrics consists of a specialsystem of feeding the warp-threads which form the pile. These pile warp threads are gripped between the two parts or members of a press which receives a number of successive advancing movements, during which the pile-warp threads are kept in tension at the rear of the press by weights acting upon them and in front of the press by other weights which cause the loops of the pile-threads not used to form pile to be lengthened. After a certain number of picks or successive advancing movements of the press,

the parts or members of whichmove apart substantially of two boards or plates (1 and e,

and release the pile-threads, all the pile Warpthreads being released the longer or shorter loops which are in advance of the press are raised to the general or normal level or stretch of the series of pile-threads and the lengths of thread thus relieved or slackened and which would otherwise lie loose or float are taken up by the descent of the weights which act at the rear of the press, thus regulating the series or stretch of pile-threads throughout its entire extent from the reels to the lay.

Such is the characteristic feature of our new loom, which we will now proceed to describe with reference to the annexed drawings.

Figure l is a longitudinal section of a loom for weaving face-to-face pile fabrics arranged in accordance with our invention.

bers of which are knotted at 0 Serial No. 105,313. (No man.)

upon the fabrics, are drawn from reels on i which they are wound by a bar b, which regulates their length before their passage into the holes of a plate 0, whence they pass between two boards or plates (1 e, which form a kind of movable press for feeding the pilethreads necessary for the formation of the fabrics. Each of the threads a then passes over a rod f, Fig. 5, then into one of the eyes 9 of a series of auxiliary pile warp-healds, and thence over a second rod f before passing to the main healds of the loom. Each eye g is connected to a double thread h, the two mem- Below these knots the separate members of the thread pass into holes. formed in a vertically-movable boardor plate j, and they carry tension-weights It. The regulator-bar b is pivloted to the frame of the machine, as shown, and has a regular oscillating motion imparted to it through the medium of a retractingspring Z and a strap Z, fixed to the lower end .of a rocking-lever m, actuated by a cam n.

The press above referred to is composed the lower of which, (1, is smooth and rests upon two operating-cylinders 0, while the upper one, 8, which is covered with cloth, exerts pressure upon the pile-threads, which pass over the other plate (1 under the action of a heavy roller p, free to turn in its bearings.

, The feed of the pile-threads which have to cooperate in the formation of the figured fab- ,ricsis effected by the advance of the boards 'd e, which are operated by the cylinders 0, carrying chain-wheels q q, driven by a chain 7', which is set in motion by a chain-wheel s, mounted on the same shaft as a ratchet-wheel t, which moves round a certain distance at each pick under the action of a pawl a, carried by a rocking lever '0, connected to a hook springs as in consequence of the upper cylin derp being raised. The mechanism which lifts the cylinder 19 at same time causes the board or plate j to rise, which latter serves to lift the weights k and permit the weights 21 to return to the old reserve the pile-threads one side thereof is mounted an eccentric y,

which actuates a bar w, the free extremity of which rests in a transverse ring 2, fixed to a lever l, pivoted at 2. The bar in is provided with a notch with which corresponds another notch of the same shape 3, formed on a small bar 4, pivoted at 5 upon the large bar to. On the other side of the loom is arranged another lever 1 not having a ring 2' and these two levers each carry at their upper extremities a cam 6, which acts below each journal 8 of the heavy roller 19 The levers 1 are connected, on the other hand, by links 9 with rocking levers 10, mounted on a shaft 11, passing across the loom. At each extremity of this shaft is keyed a cam 12, on which are fixed cords or chains 13 14: 14. The cord 13 actuates a rocking lever 15, at the upper end of which are attached coiled springs 16, which form a yielding connection between the lever 15 and the plates d and e to draw back the boards or plates 01 and e at the desired moment. The other cords 14: 14 pass over rollers 17, fixed to the support of the rods f, and their free ends are fixed to the plate j, which they thus hold suspended. In this combination of loom the press formed by the two boards or plates (1 and 6 instead of returning to its place after each pile-pick is moved toward the fabric by the cylinders 0 0 during several picks of pile, according to the kind of article to be made. After Weaving two, three, four, or more picks, according to the goods, the jacquard mechanism lifts the cord 18, attached to the bar 4, which rises when its notch 3 has passed the ring 2. The eccentric y then causing the bar to to move back, the notch 3 engages or catches the ring 2 and the two levers 1 are together moved or rocked toward the front of the loom by means of the links 9, levers 10, and shaft 11. In this movement the cams 6 lift the heavy cylinder 19. The boards at and e which are thus released, move apart under the action of the springs 00 and are returned backward by the springs 16 until they come against stops fixed to the board 20. At the same moment the cords 14. are pulled, lifting the board or plate j, the holes of which coming against the knots i lift the threads h, which are thus relieved of the load of the weights is. The threads a, which. have formed longer or shorter Vs in the auxiliary pile-warp healds-according as they have operated once or twice for four advancing motions of the press, for example then return automatically to the old reserve under the action of the weights 21, slipping over the lower board (1. The threads 0. all pass under the edge of the bar I), which by its backward-and-forward movement regulates the lower point of the angle formed by the threads. The heavy cylinder 19 being away from the cams 6, brings the two plates (1 and 6 together again to grip the pilethreads, and the sequence of movements is now again at the starting-point.

We claim 1. In a mechanism for feeding pile-warp threads for weaving pile fabrics, the combination of a device for gripping the threads, means for giving the same a progressive advancing movement, a tension device in advance of said gripping device acting on each thread to take up the slack of those threads which are not caught by the weft, and a tension device in the rear of said gripping device.

2. In a mechanism for feeding pile-warp threads for weaving pile fabrics, a device for gripping and advancing the threads comprising in combination upper and lower plates between which the threads run, a roller p for depressing the upper plate, actuating-cylinders upon which the lower plate rests, and means for giving said cylinders movement to advance the plates and threads while the upper plate is depressed.

3. In a mechanism for feeding pile-warp threads for weaving pile fabrics, a device for gripping and advancing the threads comprising in combination upperand lower plates between which the threads run, a heavy roller bearing on the upper plate for depressing the same, means for advancing the plates and threads while the upper plate is depressed, springs tending to lift said upper plate, and mechanism controlled from the jacquard for lifting said roller to permit said springs to lift said upper plate.

4. In a mechanism for feeding pile-warp threads for Weaving pile fabrics, the combination of a device for gripping the threads, means for giving the same a progressive advancing movement and a tension device for taking up the slack of those threads which are not caught by the weft comprising healds having eyes through which the threads pass, transverse rods at the sides of said healds over which the threads pass, and weights carried by said healds to draw the threads which 7 are not caught down in the form of loops between said rods.

5. In a mechanism for feeding pile-warp threads for weaving pile fabrics, the combination of healds for taking up slack in said threads, each of said healds being formed of a loop of two threads tied together at an intermediate point, a vertically-movable plate below said intermediate point and having separate holes through which the threads of said healds pass, whereby all said healds may be lifted at once to release the slack taken up and permit the same to be drawn back.

6. In a mechanism for feeding pile-warp threads for weaving pile fabrics, a tension de- 10 prising a transverse bar and means for moving the same forward at each beat up of the lay.

In witness whereof we have hereunto signed our names in the presence of two subscribing witnesses.

PAUL LEROUX. EDMOND LEROUX. Witnesses:

ALFRED G. HARRISON, NOEL DHULRT.

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