US1082428A - Warp stop-motion. - Google Patents

Description

H. KOCH & J. J. MU'LLER.

WARP STOP MOTION.

APPLICATION FILED FEB.7, 1912.

1 3082,4128. Patented Dec. 23, 1913.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPN C0.,WA5|HNGTON. 1). c

H. KOCH & J. J. MU'LLER.

WARP STOP MOTION.

APPLICATION FILED rmm, 1912.

Patented Dec. 23, 1913.

2 SHEBTSSHEET 2.

COLUMBIA PLANOORAPN CO., WASHINGTON D. c.

lllNlT STATES ATFllhl HANS KOCH AND JOI-IANN JAKOB IlIlLl'LLER, 0F DIETIEION, SYVITZERLAND.

WAR-P STOP-MOTION.

oseass.

To all whom it may concern:

Be it known that we, HANs KOCH and JoI-iANN JAKOB MI'iLLER, both citizens of the Republic of Switzerland, and residents of Diet-ikon, in the Canton of Zurich, Switzerland, have invented new and useful Improvements in Warp Stopl lotions, of which the "following is a specification.

The object of our invention is the providing of a stopper, designed to automatically throw out of gear the weavers loom in case of warp breaking.

@ur improved mechanism differs from those of the general type in so far that the broken warp-threads may be caught not only on one line extending transversely to the warp-threads, but are blown by means of a nozzle provided at the end of a tube, oscillating in a transverse direction to that of the warp, into a space limited in extent, within which are provided stopper lamellre made to move against and alternately engage with each other, commanding in their stroke the entire space, of which the one are movable and are caused by the broken warpthreads, which introduce themselves be tween the stopper lainellze, to deflect in such a manner that, by the mere resistance offered by the broken thread, the mechanism stopping the loom will be acted upon.

in the accompanying drawing, which forms part of this specification, an embodiment of our invention is shown by way of example and applied to a loom of which only those parts are diagrammatically shown which are necessary for the understanding of our resent invention.

Figure l is a vertical section of the mechanism about the line AB of Fig. 3; Fig. 1 is a horizontal section through two stepper-lamellre; Fig. 2 is a top plan view of Fig. 1; Fig. 3 is a section about CD of Fig. 1 and Figs. 4, 5 and 6 are details of the air supply system.

Referring to parts on drawing: 1 is the warp or the warp-threads which run from a warp-beam 1 over a straightening beam 3 through the mounting 2, and through the reed of the lathe 31 of the loom to reach the Specification of Letters Patent.

Application filed February 7, 1912.

Patented 23, T2913.

Serial No. 676,025.

cloth-beam 1. Between two leases 2 are arranged and set apart from each. other, two horizontal bars 10, extending in the same direction as the former, and running parallel to each other, over which are guided the warp-threads 1. Upon two horizontal bars *3, arranged transversely to the di ction of the warp-threads and permanently secured in place below the latter, are fitted and kept apart from each other by cans of the tube pieces 8 the vertical and stat" K stopper lamellze 5) extending in the sa 1e directicn as the warp-threads, and pro ecting with their upper part upward between the warp-threads. The stopper lamelleo 9 which preferably are stamped out i sheet iron, are fitted, below the warp-threads, with downwardly extending vertical teeth 9. Through the teeth 9 the stationary stopper lamellce 9 and positioned in the same line, wires -;-t are passed which run transversely to the warp-threads, as shown in Figs. 1, 1 2 and 3, so that the broken warpthreads will. come to rest transversely on the same, thereby crossing the teeth or the two rows of stopper lainellzr. Underneath the stopper lainellai 0 are arranged parallel two supporting rails 12', interconnected at each extremity by a trareling carriage rf he two traveling carriages l) are adapted to be shifted to and fro on two horirzontal bars 13 secured with both of their ends to the frame or the loom, the carriages thus traveling transversely to the longitudinal direction of the warp-threads. The traveling carriage 12 which is shown at the left hand side of Fig. l is associated by means of connecting red A with the crank 14% opera tively connected by means of bevel. gear system with cam shaft 16 the lco u, so that, while wcrl-iing operations are on, the rails 19 are continuously shifted to and tro, and this to a somewhat greater ent than the distance between two stopper laznellze 9. Between the rails 12 are ably mounted on two horizontal jo each many stopp .ianiellre l? L tee-re are stopper lamellte 9. stepper lamellae 17, which are likewise stamped out of sheet iron, are provided with teeth which so fit into the spaces between the teeth of the stopper lamellae 9, that they will not contact with the teeth 9 when the stopper lamellze 17 are caused by the rails 12 to move past the stopper lamellze 9.

In order to insure that the stopper lamellae 17 are constantly maintained in a vertical position, they are mounted so as to project downward beyond their journals with the result that the center of gravity of the stopper lamellze 17 is located below their axis of rotation. The path of travel of the stopper lamellae 17 is so arranged that in each run two adjacent stopper lamellze 9 are passed by. (Fig. 1 to the right). YVithin the one rail 12',the stopper lamellae 17 are each provided, and made all in one piece, with a double armed lever 18. Over all these levers 18 runs a wire 19, connected at its ends to two levers 21 which, overlapping one of the supporting rails 12, are rotatably mounted on a common shaft 20 lodged in two arms 5 of the supporting rails. To one end of the shaft 20 is secured a downwardly projecting lever 22, the lower end of which is connected by means of a cord to the lower end of lever 26. As is evident from Fig. 3, the lever 26 will normally occupy a backwardly oblique posi tion, so that the cord is continuously subjected to a slight tension seeing that lever 26 always tends to move into a. vertical position. The lever 26 carries at its upper end, and projecting toward the lathe 31, a tongue 30, which at the rear end on 26, has a shoulder 30. On the rear end of tongue 30, normally rests with its free end a catch 34, which will catch behind the said shoulder 30 as soon as the lever 26 is brought into the position shown by dotted lines in Fig. 3 and in this position lever 26 is debarred from being automatically restored into its former position. To the lathe 31 is fitted an abutment 32 which, while the loom is in regular working operations, is moving below the tongue 30, but same will strike against the latter whenever lever 26 occupies the position which is shown by dotted lines in Fig. 3. The lever 26, as well as the catch 34 are both bedded in the checks 27 of the stopping mechanism of the loom. 33 is the shipper lever of the loom which is connected to the belt guide 36 of the drive, the latter being constituted by a loose pulley 57 and a tight pulley 58. On the abutment 32 striking against the tongue 30, the checks 2? will draw back and thereby the drive of the loom is thrown out of gear in the usual manner.

Located transversely to the position of the warp, and arranged over and above the loom, there is a compressed air supply piping 37 to which is connected the valve chamber 38.

From a flanged socket 39 standing forward off from same (Figs. 3 and 4 to the left) a tube 40 is suspended, having at its lower end located immediately over the warp, a nozzle and which in the form of a pendulum freely oscillates transversely over the warp. The action of the said tube, or rather the imparting of the oscillating movement to it may, as is shown by plain lines in Fig. 1, be commanded from the cam shaft 16. The tube 40, by means of a rod 41, is connected to a lever 42 which is put into oscillation by a shaft 43, lodged in a forked support 44 secured to the compressed air supply piping 37 and which carries between the supporting arms a coupling (Fig. 6), constituted by two disks 45, 46 and a spiral spring 47.

The one coupling member, carrying on a downwardly projecting arm the lever 42, is provided with four gudgeons which nor mally are projecting in hollowed depressions of the other coupling member whereby it is obtained that whenever a resisting force is brought to act upon the tube, such as is for instance the case when the tube is seized with the hand, the coupling will be thrown out of engagement, thus any risk of injury being done to the hands by the tube striking against them is avoided, and the warp can be completely disengaged at the upper part. At the forward rigl'it hand end of the shaft 43 (Fig. 6), lever 50 is permanently secured in place, which by its free end, and by means of a rod 48 is operatively connected to a crank 49, fitted to the cam shaft 16, and which, while the loom is in working operation, is caused to swing constantly up and down. From a clownwardly extending flanged socket of the valve chamber, projects a valve-spindle 51 (Fig. 5) which with its lower end bears upon a nose 52 of lever 53 seated in a wing of the valve chamber. Said lever is loaded by a weight so that it constantly tends to occupy its lowermost position (Fig. which latter is limited by an arm 54, projecting upward beyond the fulcrum of lever 53 and bearing with its upper end on the valve chamber. In this position of the levers 53, 54, the valve-spindle 51 is depressed and the valve is closed. The arm 54 is connected by means of a wire 55 to one of the arms of a double armed horizontally oscillating lever 56 seated in the loom which, with its other arm applies in such a way against the belt guide 36 that on starting the loom, the lever 56 is so rotated that arm 54 is caused to swing downward and lever 53 upward. Thereby the valve-spindle is raised and the valve opens.

The action of the herein described mecha nism is as follows: As soon as a warp-thread breaks, the air blowing from the oscillating tube 40 will carry the broken thread clownward between the bars 10 or the two ends of the thread will be blown altogether downward into the space limited by the wires 4 and the stopper lamellae, as is shown in Fig. 3. Hereby the broken thread is sure to be caught between two stopper lamellae 9 and 17 with the result, that the respective stopper lamella 17 is brought into an oblique position. The consequence is that lever 18 of the respective stopper lamella is likewise caused to take an oblique position, thereby lifting up the wire 19. This causes the shaft 20 or rather the lever 22 to rotate, so that lever 26 is made to occupy a position corresponding to its condition of equilibrium thus bringing the tongue 30 within reach of the abutment 82. The latter will strike on the next following forward stroke of the lathe against the tongue 30 and bring about the stopping of the loo-m.

What we claim as new and desire to secure by Letters Patent of the United States is:

1. In a warp stop motion for looms, the combination of a tubular pendulum forming a nozzle for the distribution of compressed air, means for oscillating said pendulum transversely over the warp, two series of stopper lamellze one stationary and the other movable below said warp adapted to catch the ends of a broken thread blown toward them by the air distributed by said nozzles, levers connected to said stopper lamellae participating in their movement, and means controlled by said levers for actuating the stopping mechanism of the loom.

2. In a warp stop motion for looms, the combination of a tubular pendulum forming a nozzle for the distribution of compressed air, means for oscillating said pendulum transversely over the warp, stopper lamellae provided within a space below the warp, arranged in two superposed horizontal rows transversely to the direction of the warp, means for oscillating the lower horizontal row or" stopper lamellae, teeth upon the stopper lamellze of each row crossing each other for catching the ends of a broken thread blown toward them by the air distributed from said nozzle, means connected to said lamellze for participating in their movement, and means controlled by said last named means for actuating the stopping mechanism of the loom.

3. In a warp stop motion for looms, the combination of a tubular pendulum forming a nozzle for the distribution of compressed air, means for oscillating said pendulum transversely over the warp, a series of stationary, and a series of movable stopper lamellae, two parallel connected rails carrying the movable lamellae, a drive for reciprocating the movable lamellae to a somewhat greater extent than the distance between two stationary lanlellze for entangling the ends of the broken warp thread, and means controlled by said lamellae tor actuating the stopping mechanism of the loom.

a. In a warp stop motion for looms, the combination of a tubular pendulum forming a nozzle for the distribution of compressed air, means for oscillating said pendulum transversely over the warp, stopper lamellze provided within a space below the warp, one series of which is movably mounted to permit free oscillation, means for reciprocating one series of lamellae, a wire passed through the teeth of the staionary lamellae, levers to which the ends of said wire are connected, a shaft for said levers, a downwardly projecting lever secured to one end of said shaft, a lever connected by a cord to the lower end of said downwardly projecting lever, means for connecting said first-named lever with the stopping mechanism of the loom, a lathe, an abutment on said lathe for causing the actuation of the stopping mechanism of the loom upon the breaking of a thread.

5. In a warp stop motion for looms, the combination of a tubular pendulum forming a nozzle for the distribution of compressed air, means for oscillating said pendulum transversely over the warp, stationary and oscillating stopper lamellae pro vided within a space below the warp and arranged in two superposed horizontal rows running transversely to the direction of the warp threads, the lamellze standing upright and extending in the same direction as the warp threads, means for reciprocating one row of the lamellae, teeth so provided on the stopper lamellae that on reciprocating one row of said lamellae transversely to the warp the teeth of this row are formed to penetrate and pass through the spaces between the teeth of the other row of lamellze, wires which pass through the stationary lamellze limiting said space and offering a support for the broken warp thread resting in a transverse position upon the same, a lever and a shaft connected to said lamellae adapted to be rotated upon the deflection of the same, and means for actuating the stopping mechanism of the loom.

6. \Varp stop motion for looms comprising a pendulum tube, means for oscillating said tube transversely over the warp, a nozzle at the end of said tube for supplying compressed air, a coupling operatively connecting said tube with the drive of the loom, spring pressed catches provided at one of the coupling members engaging depressions in the other coupling member for throwing the coupling automatically out of engagement, the moment the tube is stopped and prevented from oscillation, substantially as described.

7. Warp stop motion'for weavers looms the valve upon the stopping of the loom, 10 comprising a tube for supplying compressed substantially as described.

air, means for oscillating said tube trans- Signed by us at Zurich, Switzerland, this versely over the warp, a nozzle at the lower third day of January, 1911.

end of said tube, a valve between said tube HANS KOCH.

and the source of compressed air opening JUHANN JAKOB MULLER. automatically on starting the loom, a con- Witnesses:

nection for connecting said valve with the Hnmnron RINDERKNEGHT,

stop mechanism of the loom adapted to close HARRY A. MCBRIDE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. C.

Images