US410442A - Shedding mechanism foe looms - Google Patents

Description

(No Model.) 7 3 Sheets-Sheet I.

E. PONT.

SHEDDING MEGHANISM FOR LOOMS.

Patented Sept. 3, 1889'.-

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i (No Model.) 3 Sheets-Sheet 2. E.P0NT. SHEDDING MEGHANISM FOB. LOOMS.

No. 410,442. Patented Sept. 3, 1889 WWI/{200% g'vwawto'c $2 91 amen 121d Y QM X/Z/(M N Parana Pnmmmgn w, Washington. or.

(No Model.) 3 Sheets-Sheet 3.

E. PONT.

SHEDDING MEGHANISM FOR LOOMS.

No. 410,442. Patented Sept. 8, 1889.

WITNESSES n. FEIERS. mmmm n m. Wanhmglm ac.

UNITED STATES PATENT OFFICE.

EDUARDO PONT, OF BARCELONA, SPAIN.

SHEDDING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 410,442, dated September 3, 1889.

Application filed March 6, 1888. Serial No. 266,388. (No model.) Patented in Spain May 3, 1887, No. 10,739 in England September 3, 1887, No. 11,954, and in France September 5,1887, Ila-172,749.

To all whont it may concern:

Be it known that I, EDUARDO PONT, a citizen of Spain, residing at Barcelona, Spain, have invented certain new and useful Improvements in Shedding Mechanism for Looms, (for which I have obtained Letters Patent in Spain, No. 10,739, dated May 3, 1887; in England, No. 11,954, dated September 3, 1887, and in France, No. 172,749, dated September 5, 1887,) of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to Jacquard looms in which patterned or design fabric is woven, and has for its object the provision of certain improved constructions and combinations of devices for raising the proper warp-threads in the production of a design. By myinvention I provide a construction of parts for this purpose which is readily applicable to existing looms, thereby enabling me to produce patterned or design fabric thereon.

The improved devices consist, essentially, of a series of straight parallel needles arranged in one or more rows or lines and each terminating in a ring or eye, to which is attached the heddle cord or string, which thence passes around suitable guide-rods and down to the lower part of the 100111. In connection with the needles I employ two bars or beams square in cross-section, one of which serves as a guide and support for the needles, having a number of parallel perforations for the passage of said needles, while the other bar serves as a guide orsupport for the cards and has two movementsviz., a reciprocating movement toward and from the ends of the needles and a rotary movement about its axis, so as to give it a one-quarter revolution on each travel. This bar is provided along its length with grooves corresponding to the lines of holes in the needle-guide bar aforementioned. The movements of the needleguide bar and card-guide bar take place on each stroke of the loom. The needle-guide bar recedes, so that the points of the needles are hidden in the perforations thereof, and comes in contact with the card upon the cardguide bar, thus inclosing the card securely and accurately with perfect correspondence between the holes in the card and the perforations in the needle-guide bar. Both guidebars then advance and the card comes against the ends of the needles, those needles being moved which correspond with the closed holes in said .card. Then the cards are caused to recede, the needles resume their original position by the action of the weights son the heddle-cords. If the design intended to be produced requires but four cards, the latter can be arranged on the face of the cardguide bar; butif the design necessitates more cards they may be arranged as an endless band. The length of the needle-guide bar and of the card-bar may be varied, as required, to allow several series of cards to be arranged on the same bar when the designs to be produced in the fabric are so intricate as to require a large number of needles. The same result may be attained by increasing the number of rows of needles, and consequently the number of holes in the bars.

Referring to the accompanying drawings, Figure I is a front elevation of my improved apparatus. Fig. II is a side elevation of the same, taken from the left hand of Fig. I. Fig. III is a cross-section 011 line taken longitudinally through the device between the side frames. This figure is set in a reverse direction to Fig. II, and shows the card-bar at the moment it makes the one-quarter revolution for changing the cards after the passage. Fig. III is an enlarged detail view of the needles, harness-cords, and the rods over which they work, showing the needlesin the forward movement and indicating the manner in which a forward movement of the needles produces an elevation of the heddles. Fig. IV is a plan view showing the card-bar at the moment it separates from the need1e-guide bar after the passage for making the quarter-revolution for changing the card. Fig. V is an enlarged view of the connection between the needleguide bar and the card-bar. Fig. VI is an enlarged side elevation of the means for reversing the card-bar.

Similar letters of reference indicate corresponding parts in all the figures where they occur.

The apparatus consists of the frames A A and A A, placed at a distance apart, accordin g to the breadth of the apparatus, and united by transverse braces or bars E. On these frames is supported the entire mechanism, and together with the rails D they serve as guides for the movement of the card-bar O and needle-guide bar B. The mechanism receives its motion from the loom through a shaft F by bevel-gears F, the gearingturning in the direction indicated by the arrowin Fig. II, and toothed wheels G G G, the last of which wheels actuates the shaft H, which carries at its extremities the cranks I, connected by rods J to the trunnions c of bar 0. The trunnions of bar 0 run in the slots of the slotted bar K, connected to the ends of the bar B. The said slotted bars are capable of longitudinal movement, being guided on antifriction wheels or otherwise in the frame of the machine. cede in slotted bars K, and on arriving at the left-hand end in Fig. I of said slots carry the bars K, and with them the bar B, to the left in Fig. I. On the forward return movement of the bar 0 to the right in Fig. I the bar B is left stationary until bar 0 abuts against it, when both move forward together. The bar 0 must also make one-quarter revolution to bring a new card iii front of the pins at each reciprocation. hen receding, it abuts against the finger L, Fig. III, pressed upon by the spring L, and the bar being pivoted at its extremities revolves and presents on each movement a new face to the needles. The springs M and M keep the said bar immovable during these to and fro movements. On the side frame Aopposite to that on which finger L is located is placed a finger N, which is similarin construction and form to finger L, but is set in a reverse direction and on the opposite side of the bar 0. It is provided with a spring N, which holds it normally in position to engage bar 0 and impart thereto a quarter-revolution in a reverse direction. When finger N is not used thus the, string n, which passes over the pulleys n and extends down into reach of the operator, may be pulled upon to raise said finger out of engagement with bar 0, and when finger L is to be raised, so as to allow the bar 0 to be reversed by finger N, the cord Z, which passes over suitable pulleys Z, is used to keep it out of engagement. The needles P are straight, and their forward extremities terminate in small rings, to which the harness-cords O are attached. The cords pass under the rods Q and over rods Q and are attached to the rings on the rear ends of the needles, so that when the needles are pressed backward in The trunnions of bar 0 redirection indicated by arrows in Figs. III and III and into the position shown in Fig. III the cords 0 will be raised, as will be readily understood. When the pressure on the needles is released, the weights on the cords O thrust the needles forward again into the position shown in Fig. III. Beneath the frame of the machine the cords pass through a guide-bar S, which is suitably suspended at this point. When the bar 0 advances with the needleguide bar, certain needles passing through the needle-guide bar find their further passage closed or stopped by the card and are driven backbeyond the rods Q, and consequently draw up the heddles, thereby raising the warpthreads which are governed by them. When, however, the bar '0 recedes, the needles are freed and resume their first position by aid of the pressure of the weight 8 on the cords O, attached to the needles. The pattern-cards may be connected to form an endless band 0, which runs over a cylinder d, Fig. III, whence they pass to bar O. The cards out of use are supported on bars Z Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, with a perforated movable needle-guide bar, bar 0, and devices for operating said bars, of needles passing through the guide-bar, rods Q, over which the needles pass at the rear, rods Q, located to the rear of and below rods Q, and cords O, secured to rear ends of the needles and passed around bars Q and Q, in the manner and for the purpose set forth.

2. The combination, with a reciprocating card-bar having squared faces, spring-actuated pawls at the ends thereof, the one at one end being mounted on one side of the bar and the one at the other end being mounted on the opposite side of the bar, and cords for withdrawing each pawl from engagement with the bar, of needles, a perforated movable needle-guide barthrough which the needles pass rod Q, over which the needles pass at the rear, rods Q, located to the rear of and below rods Q, and cords O, secured to the rear of the needles and passed around bars Q and Q, in the manner and for the purpose set forth.

In testimony whereof I have affixed my signature in presence of two witnesses.

EDUARDO PONT.

Vitnesses:

GERONIMO BOLIBAR, DANIEL CASTELLO.

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