US871096A - Harness-loosener of looms. - Google Patents

Description

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. 0. A. SAWYER.

HARNESS LOOSBNER 0F LOOMS.

APPLICATION FILED DBU. 28. 1906.

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No. 871,096. PATENTED NOV. l2, 1907. O. A. SAWYER.

HARNESS LOOSBNER 0F LOOMS.

APPLICATION FILED D110. 28, 190s.

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ORREN A. SAWYER, OF LOWELL, MASSACHUSETTS, ASSIGNOR TO EARL A. THISSELL, OF

LOWELL, MASSACHUSETTS.

HARNESS-LOOSENER vOF LOOMS.

Specification of Letters Patent.

Patented Nov. 12, 1907.

Application tiled December 28, 1906. Serial No. 349,873.

To ell whom it may concern.'

Be it known that I, ORREN A. SMVYER, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of lilassachusetts, have invented a certain new and useful lmprovement in Harness-Looseners of Looms, of which the following is a specification.

This invention relates to harness-looseners of looms and has for its object to furnish a means for slacking the harnesses and the warp-tln'eads of a loom to facilitate the drawing in of broken warp-threads, the monding of broken harness-eyes, the attachment of jacks, and the adjustment of harness-cams by the loom-fixer.

Said invention also lcssens or obviates the danger ol breaking other warp-threads in the operation of mending previously broken threads, the liability, in putting up, taking down or adjusting the harnesses, of pulling out the screw-eyes by which the jacks and harnessstraps are connected to the harness-shafts, and of making thick and thin places in the cloth.

The` more numerous the harnesses are, the more useful the invention hereinafter described.

In weaving, `the heddles are drawn taut by the strapping which connects the harnesses to the saddle-roll above and to the treadles below and the warp-yarns are alsoI strained between the whip-roll and the fell or mak` ing edge of the cloth, so that in mending broken yarns it is necessary to part the heddles nearest the operator to reach the heddles behind or in front, usually infront, because the broken ends are usually drawn forward through the heddles and reed. ln parting or pushing aside the heddles, the warp-threads carried thereby are liable to be broken and one hand of the operator and consid erable muscular force is required to hold the heddles out of the way. Frequently, the operator swings the lay forward to increase the space between the lay and the harnesses and to reach the latter over the top of the former` Swinging the lay forward is likely to loosen the warp-threads by drawing from the warpbeam so that a thin place77 will be formed when the loom is subsequently started, because when the warp is loosened by turning the warp-beam, said beam would only with greatfditliculty be replaced or turned back to its former position.

In the accompanying drawing, on three sheets, Figure 1, is a side elevation of my invention with such parts oi a loom as are necessary'to the understanding of said invention, showing the harnesses and warp-threads in normal position; Fig. 2, a similar view showing said harnesses and warp-threads slackenod; Fig. 3, a frontelevation of a part of a loom frame, with a reed, and harnesses and connected parts, and with my improvement.

A denotes a loom-frame having an arch a; B, breastbeam; C, a lay-beam; D, a reed; E, a drop-wire; F,

l a warp-beam; these parts being all of any usual construction.

The harnesses F F'Z F? F4 are of ordinary construction and each consists of two parallel harness-shafts/U, f connected by flexible heddles fl, These harnesses are connected in pairs by harness-roll straps f1 f3, which pass over harness-rolls ff and each end of each harnessroll is supported by a saddle-roll strap ff, said straps ff being secured to rolls or bosses f7 f8 on the saddleroll j. The lower edges or lower harness shafts of the harnesses are connected to jacks fJ flo by jack-straps f1l j which in turn are connected to the treadles (not shown) in the usual manner, said treadles being depressed by cams on the cam-shaft (neither being shown) in a well understood manner.

lt will be understood tl1at the straps f f l f j are connected to the harness-shafts not directly but through the medium of screw-eyesf13 and hooks fu.

The saddle roll f 15 is journaled upon stands mounted upon the arch a of the loom frame. Each of these stands is usually formed in one piece. l support the saddle. roll in a somewhat similar mannervbut l make each stand in two parts, a stationary pa'rt Gl (secured to the arch u in any usual manner) and an upper part G3 G4, jointed to the lower part by means of a shaft G which turns freely in both of the lower stand parts Gl l2 but to which both of the upper parts G3 G4 are rigidly secured, as by radial set-screws q1 g2.

The two parts of each stand are shown in their normal relativo position in Fig. l, the upper and lower stand parts having flat contacting stop-surfaces, indicated by the dotted straight line y, which limit the backward movement of the upper stand part upon the lower. ln the othervdirection, the movement of the Lipper part of each stand is limited by said upper part striking on said stop surface y of the lower part.

he shaft G is rocked to depress the siuldle-rollfl5 and bring it nearer the jacks f3 f1", that is, to slacken the parts including the heddles which are stretched between said jacks and saddle-roll, thus leaving the heddles and warp-threzuls free to be moved laterally or up and down without strain or danger of being broken.

l have shown a lever or handspike ll arranged to slide radially in the shaft G by which said shaft may easily be turned by hand in either direction. This lever H is provided at one end with an enlargement h and at the other with a hole which receives a Cotterpin h1, said enlargement and pin preventing the removal of said lever from said shaft G and said enlargement h serving as a handle. Said handspike may be shoved back when the harnesses are loosened to be out of the way of the operator when piecing up.

I claim as my invention1 1. The combination in a loom, of harnesses, each cemprising an upper and a lower harness-shaft and flexible heddles connecting said shafts, a saddle-roll, flexible connections betweensaid saddle-roll and each of said harnesses and means of supporting and raising or lowering saidsa'ddlerolly to tighten or loosen said harnesses.

2. The combination in a loom, of a frame, stands, each formed in two parts, one of which parts is stationary on said frame and the other of which parts is movable in said stationary part, said movable parts being rigidly connected to each other, a saddle-roll supported on said movable parts, harnesses, each comprising an upper and a lower harness-shaft and exible heddles connecting said shafts, and flexible connections between said harnesses and said saddle-roll, to vary the tension of said connections and harnesses by changing the position of said saddle-roll.

3. 'lhe combination in a loom, of a frame, stands, each formed in two parts, one of which is stationary on said frame, a shaft journaled in said stationary parts, the other parts of said stands being,l rigidly secured to said shafts,- a saddle-roll journaled in said last named stand-parts, harnesses, each comprising an upper and a lower harness-shaft' and flexible heddles connecting said shaft, and flexible connections between said harnesses and said saddle-roll, to vary the tension of said harnesses by the turning of said shaft.

4. In a loom, the combination with the harnesses and the exible harnessconnections by which the said harnesses are caused to move reciprocally with relation to each other, of 'a saddle-roll with which the said harnessconnections are connected, and which is held in the normal or working position thereof, with the harness-connections taut, by the strain applied through the said harness-connections, and adapted to be shifted from such position into a position to loosen the harnesses.

In a loom, the combination with the harnesses, the flexible harness-connections by which the said harnesses are caused to move reciprocally with relation-to each other, and a saddle-roll with which the said harnessco11 nections are connected, of a pivotally-mounted support for the said saddleeroll having a normal working position in which it is held by the strain applied through the said harness-connections acting effectively at one side of the pivotal axis, and movable to the other side of the said axis to thereby relax the harness-connections and loosen the harnesses.

In witness whereof, l have axed my signature, in presence of two witnesses.

ORREN A. SAWYER.

Witnesses z ALBERT M. Moons, GRACE CROWLEY.

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