US171396A - Improvement in take-up motion for looms - Google Patents

Description

.T. LYALL.

TAKE-UP MOTION Fon Looms.

No. 171,396. Patented ne.z1,1a75.

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PATENT OFFICE.

JAMES LYALL, OF NEW YORK, N. Y.

IIVIPROVEMEN-'l IN TAKE-UP MOTION FOR LOOMS.

Specification forming part of Letters Patent N o. l 71,396, dated December 21, 1875 application filed October 25, 187 5.

\ To all whom it may concern:

ular fabrics have been provided with auto` niatictake-ups, in which there are needley points to hold the goods from receding toward the lay, and over which points the take-up proper draws the cloth when the filling is beaten in bythe lay. This operation keeps 'the cloth moving and' on and @if the needle-points a great number of times, especially while a gore is being woven; hence it frequently happens that the holes become so much enlarged in the progress of the weaving, both by displacing the warps and straining the Weft-threads, that they are visible even after the fabrics have been washed, bleached, and blocked, and, in some instances, the filling-threads are cut by being drawn over the sharp needle-points. Myrpresent invention is for avoiding this; and consists in coinbining a sectional roller of needle-points and ratchet-teeth and pawls with a progressive takenp. By this combination the sectional rollers turn upon their axis as the cloth moves back and forth by the pressure from the lay, and the relief of' that pressure and such sectional rollers vibrate until the cloth as woven `allows the ratchet-teeth to be taken successively by the pawls. lhe needle-points do not draw out of the holes' and re-enter the same,l

`but the needles continuein the same holes and hold in the cloth until the Weaving has progressed far enough for the cloth to be drawn off the particular needle-points of the roller successively. Thus the fabric is not injured, and the needle-holes are not noticeable in the completed article.

In the drawing, Figure l is a vertical section, and Fig. 2 is a partial plan, of said takeup.

Vratchet-wheel l of the roller I the progressive movement to the said band et," back and forth constantly the fabric upon the bed d, and drawing the y saine progressively as made, and with the required force, is substantially the same as that shown in Letters Patent No. 133,868, granted to me. The levers ethat carry the rollerb are adjustable by the screws j' to regulate the pressure of the band or web a upon the fabric, and a lever, It, and pawl h', acting upon the c, serve to give and this lever h may be moved by the lay or otherwise. The sectional roller@ is iliade of suitable lengths upon the shaft o, and each length is provided With numerous needle-points, r,

and with a ratchet-Wheel, Z, and spring-pawls sserve to hold these sectional holding-rollers to Whatever place they may be turned by the movement of the cloth as drawn along by the band a, when the lay passes on the fell. sectional rollersz' should be made of sufficiently short lengths to allow theffabric to be properly taken up according to character of the irregular weaving.

I claim as my inventionl. The sectional rollers t, provided with numerous needle-points, r, and each having a` ratchet, l, and paWl s, in combination with the take-up band a and its rollers b c, substantially as set forth. 2. In a take-up mechanism for weaving irregular fabrics, a sectional roller, having' nu'- nierous needle-points, in combinationl with ratchet-wheels and holdng-pawls appliedto the respective sections, substantially as set forth. y

Signed by me this 21st day of October, A.' D. 1875.

JAMES LYALL.

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