US692911A - Loom. - Google Patents

Description

Patented'Feb. Il, |902. C. F. ROPER.

LODM.

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no. 692,9". Patented Fen. Il, 1902.

c. F. Roman.

LOM.

(Application led May 8, 1901.) v (No'Mudel.) 2 Sheets-Sheet 2.

- emfa- M" UNITED STATES PATENT OFFICE.

DRAPER COMPANY, RATION OF MAINE.

OF IIOPEDALE, MASSACHUSETTS, A CORPO- LOOM.

Sl-ECIFICATION forming part of Letters Patent No. 692,911, dated February 1 1, 1902. Application filed May 8. 1901. Serial No. 59,247. (No model.)

To all whom, t may concern.-

l Be it known that I, CHARLES F. ROPER, a citizen of the United States, and a resident of I-Iopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters and numerals on the drawings representing like parts.

In the normal operation of a loom for weaving the cloth is moved forward at the fell at each beat-in of the filling to an extent depending very largely on the give or stretch of the warps, and when soft or very elastic warps are being used frequently the intermittent forward movement of the cloth at the fell will be too great to permit the insertion of the desired number of picks of iilling per inch. In my present invention I have provided means for increasing the resistance of the warps to the action of the lay in beating in the filling, so that improper forward movement of the cloth at the fell is prevented, the desired result being attained in the present instance by holding the warps from bodily movement toward theV fell as the filling is beaten in. I have also provided means to positively slacken the Warps to an abnormal degree if the shuttle is improperly boxed-as, for instance, when the loom bangs oft, but while such means is independent of the means for holding up or restraining the warps on the beat-in the latter means is rendered inoperative upon operation ofthe former means, contemporaneous operation being manifestly inadmissible, so that it' one instrumentality operates the other does not.

I have not herein broadly claimed warpslackening means, as the same forms the subjectmatter of another application, Serial No. 59,246, tiled by me the 8th day of May, 1901, said application containing broad claims for such su bject-matter.

Figure 1 is a right-hand side elevation of a portionof a loom with one embodiment of my presentinventio'n applied thereto, the lay and crank-shaft being shown in section; and Fig, 2 is a' left-hand side elevation of the loom, showing a portion of the novel mechanism to be hereinafter described.

The lay A3, breast-beam A40, having the holding-plate N for the shipper L, the knockoft arm c2 c3, the protector mechanism comprising, essentially, a frog c, slidably mounted onthe loom side, the dagger d3 on the rockshaft d', carried by the lay, and the arm d4, secured to the rock-shaft and adapted to be moved by the binder (ZX of the shuttle-box DX when the shuttle is properly boxed to thereby lift the dagger into inoperative position, are andmay be all substantially as in United States Patent No. 591,979, dated October 19, 1897, except that the frog herein does not act to bring the lay to a full stop, the stopping of the loom being effected gradually by the brake mechanism. As in said patent, if the shuttle fails to enter either shuttle-box sufficiently to press the binder back and rock the shaft d .to lift the dagger d3 the latter will on the4 forward beat of the lay engage the frog c and move it forward in direction of arrow 6, Fig. 2, to operate the knock-offarm t o2 c3 and release the shipper L, andthe latter in turn renders the brake mechanism operative. The said mechanism comprises, essentially, a lever f, Fig. 2, fulcrumed on the loom side at fX and having a weight at its free end and an upturned toe f at its other end ad`4 jacent the fulcrum, the toe acting against a head or collar j on a rod f3, connected at its other end to a brake-shoe F30, adapted to cooperate Ywith a fly-wheel or pulley C, fast on the crank-shaft C. The shipper has a lug 77 to normally engage the weighted end of the brake -actuator f and vmaintain the brake mechanism inoperative; butwhen the shipper is released and it rocks on its fulcrum LX the'lug 77 is withdrawn and the brake is set.

The warp-beam B, having an attached gear B', the actuating mechanism therefor, a part only of which is fully illustrated, (see Fig. 2,) including a ratchet-Wheel B3, a cooperating pawl (12X, compound pawl-carrier cX d, link d6, connected with the lay-sword AX, and thev arm E, having a roll EX to engage the periphery of the yarn mass onthe beam, are substantially as shown in United States Patent No. 647,815, dated April 17, 1900, though any other form of let-off mechanism may be employed, so far as my present invention is concerned.

Brackets A6 on the loom sides support a ibo rock -shaft m, having secured thereto upturned arms mx, in which the Whip-roll or bar Wr is rotatably mounted and over which latter the warps W pass from the beam B to the harnesses H. Adepending arm m', Fig. 2, fast on the rock-shaft, has attached to it one end of a spring S, the other end of the lat-ter being secured to a fixed partA of the loom, said spring acting upon the whip-roll in opposition to the pull of the warps. I have shown'a bell-crank m2 m3 secured to the rockshaft outside one of the brackets A6 at the left-hand side of the loom, a link M, pivotally attached to the upturned arm 'm2, being pivotally connected at its forward end with the frog c, as at m4, so that movement of the frog in the direction of arrow 6 will swing the whip-roll in the direction ofarrow 10 to slacken or release the Warps from normal tension.

Referring now to Fig. l, the rock-shafty m is provided at or near the right-hand side of the loom with a depending arm m10, pivotally connected at m12 with one end of a link m13, which is extended forward adjacentthe inner face of the loom side and provided at its front end with a hook-like projection or lug m14, herein shown as downturned, the link passing through a guide m15, secured to the loom side, the bottom of the guide shaped as a cam m16, (see dotted lines, Fig. 1,) on which the link normally rests. On its under side and adjacent the fixed cam the link itself is provided with a cam m17, so that when the link is moved in the direction of the arrow 15, Fig. 1, the cam m17 will engage and ride up on the fixed cam m16 to elevate the projection m14 out of the path of a hook-like stop aso, movable with the lay and herein shown as secured to or forming a part of one of the lay-swords AX. The relative position of the stop a3@ and the hook-like projection mu of the link m13 when the lay is in its dotted-line position, as it will be when the filling is beaten in, is such that the whip-roll VX cannotbe drawn forward by the impact of the reed against the filling laid in the shed, and as a consequence the forward movement of the warps is restricted or prevented, and this practical increase of warp tension resists the forward movement of the cloth at the fell, due to the beating in of the filling, at the instant the latter is beaten in, so that the forward movement of the cloth will not be so great as to prevent the insertion of the requisite number of picks of filling per inch. The eoperation of the stop with the hooked link thus acts to hold the warp on the beat of the lay, and with very elastic or soft warps it prevents the improper forward movement of the cloth on the beat-up.

It will be remembered that the whip-roll is normally controlled by the spring S to impart a certain tension to the warps, and. the

. means hereinbefore described for holding on the beat prevents the forward movement of the whip-roll against the action of its spring,

which would otherwise take place on the beat. y

link a to slide on the stud as.

Should the shuttle fail to -beproperl'y boxed,

the dagger will engage and move the frog c,

Fig. 2, to release the shipper and through the latter to render the brake mechanism operative; but the frog does not act of itself to stop the movement of the lay. The move ment of the frog, however, due to operation of the protector mechanism, operates through ,the link M to'move the whip-roll toward the fell of the cloth to slacken the warps to an abnormal degree, so that when the loom turns over after the release of the shipper and before the brake mechanism brings the loom to a stop the presence of the shuttle in the shed as the lay beats up will not result in tearing out or breaking the Warps. Manifestly if this warp slackening is effected the means for holding the warps on the beatup must be rendered inoperative to prevent contemporaneous operation of the latter means and the means for effecting warp slackening, and a comparisonof Figs. land 2 will clearly show how the operation of the warp-slackening means prevents the opera-V tion of the holding means. The forward movement of the whip-roll-that is, in the direction of the arrow 10, Fig. 2,-acts through the arm m10 to move the link m13 in the di rection of the arrow 15, so that thecoperation of the cams m16 m17 will lift the hook m14 out of the path of the stop-a30 before the latter is moved far enough forward to engage said hook -like projection m14, and conse quently the holding means will not operate. The latter instrumentality operates at every beat-up of the lay when the loom is running normally; but the warp-slackening means will operate only when the shuttle is-improperly boxed, and while the two instrumentalities are independent, still the operation of the warp-slackening means will automatically render inoperative or prevent the operation of the holding means. The arm m3 of the bell-crank has pivoted to it a link a., which is hooked, as at a2, to loosely embrace a headed stud a3 on the pawl-carrier member 0X, which is fulorumed on the loom side at c', the variations in warp tension acting through said link a in opposition to the spring S to move the pawl-carrier on its fulcrum, substantially as in Patent No. 647,815. When the Whip-roll is positively moved to slacken the warps, as has been described, the hook a2 permits the By making an elongated slot m5 (see dotted lines, Fig. 2) for the stud or pin m4 to pass through the vibrating movement of the whip-roll will not act to move the frog during the normal running of the loom.

My invention may be varied or rearranged without departing from the spirit and scope of my invention, one practical embodiment whereof is herein shown and described. Having fully described my invention, what I claim as new, and desireA to secure by Letters Patent, is-.

1. In al loom, a movable whip-roll, means roo y lio operative upon improper boxing of the shuttle to positively move the Whip-roll to slacken the warps, independent means to hold the Warps from bodily movement toward the fell when the filling is normally beaten in, and mechanism to prevent contemporaneous operation of thesaid two means.

2. In a loom, a spring-controlled Whip roll, protector mechanism, means actuated by or through operation thereof tov positively move the Whip-roll to slacken the Warps, independent means to hold the Whip-roll from movement upon normal beat-in of the filling, and mechanism to prevent contemporaneous operation of the said two means.`

3. In a loom, a movable Whip-roll, means operative upon improper boxing of the shuttle to positively move the whip-roll to slacken' the Warps, independent means to restrain bodily movement of the Warps. toward the fell upon normal beat-in of the filling, and a device controlled bythe operation of the former means to prevent the operation of the latter means.

4. In a loom, the lay, a movable whip-roll, protector mechanism, means actuated by or through operation thereof to positively move the whip-roll to slacken the Warps, a link connectcd with the Whip-roll and normally adapt edto be engaged and held stationary by the lay as the filling is beaten in, to thereby retain the Whip-roll from movement, and a device'to move said link into inoperative posi, tion by or through the positive movement of the Whip-roll to slacken the Warps.

5. In a loom, the lay having a stop movable therewith, a pivotally-mounted spring-controlled whip-roll, a link connected therewith and provided with a cam and a projection, the latter normally engaging the stop When the filling is beaten in, to hold the whip-roll from movement toward the fell a fixedly-mounted cam,l protector mechanism, 'and means actuated by operation of said mechanism to positively move the whip-roll to slacken the Warps, such positive movement of the Whip-roll effecting engagement of the cam on the link with the fixed cam, to thereby move the pro-` jection on the link out of the path of the 'said stop. 1

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES vn. RoPER.

W'itnesses:

GEORGE OTIs DRAPER, ERNEST W. Woon.

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