US1839565A - Device for looms employed in weaving preparatory chenille material for the manufacture of axminster carpets and the like - Google Patents

Description

- Jan. 5, 1932. G. LIEBENDER 1,839,565

DEVICE FOR LOOMS EMPLOYED IN WEAVING, PREPARATORY CHENILLE MATERIAL FOR THE MANUFACTURE OF AXMINSTER CARPETS AND THE LIKE .Filed May 30, 1930 2 Sheets-Sheet 1 li hl III 1I Jan. 5, 1932. |EBENDER 1,839,565 DEVICE FOR LOOMS EMPLOYED IN WEAVING PREPARATORY CHENILLE MATERIAL FOR THE MANUFACTURE OF AXMINSTER CARPETS AND THE LIKE Filed May 30, 1930 2 Sheets-Sheet 2 Patented Jan. 5, 1932 UNITED STATES GOTTLIEIB LIEBENIDER, OF OLSNITZ, GERMANY, ASSIGNOR T0 KOCK AND TE KOCK,

01E OLSNITZ, GERMANY, A FIRM I DEVICE FOR LOOMS EMPLOYED IN WEAVING FHEPAEATORY CHENILLE MATERIAL FOR THE MANUFACTURE OF AXMINSTER GARPETS AND THE LIKE Original application filed May 3, 1928, Serial No. 274,781.1 Divided and this application filed May 30,

1930, Serial No. 457,642, and in Germany March 18, 1927. I

This invention is related to my Patent No. 1,783,125, dated November 25, 1930.

ture of Axminster carpets and of the kind wherein differently coloured weft threads are fed to a pair of grippers through pivotally deflected tubes which are selected by a Jacquard mechanism, and the invention, consists in the provision of a stop which main tains the selected tube in operative posltion and which is released through the medium of a lever for a change of tube after a pre-de-" termined number of picks.

Fig. 1 of the accompanying drawmgs represents a front view of the weft selecting devlce,

Fig. 2 is a side view of a modification of the same, and

Fig. 3 is a side view of a device for timing the release of the stop.

The differently coloured weft threads are fed through guide tubes 28 which are conp p fthe armsof the bell cranks 61. The tappets 41 75 ofthe. individual discs are situated at different distances from the stops60, and'the number of beats required for 'bringing the tapp'ets into contact withthe release lever,

trolled by springs 48 and pivoted by means of holders to brackets 29 arranged radially 3 beneath an arcuate carrier so that any arm can be brought with its mouth-piece 64 into the path of a pair of reciprocating grippers 51 whereby the thread 69 is extracted from the tube outside the heddles 56 and 57, as shown in Fig. 2.

The tubes are selected through the medium of a Jacquard mechanism which is of any ordinary form but which it is not deemed necessary here to show which acts on vertical rods 32 connected to lever arms 30 on the tube holders. The rods 32 are guided in slots 33 and 34 in the machine frame, and each rod carries a nose-piece 35 which, on the respective tube being turned into operative position, passes and then engages a stop rod 36, the latter being common to all the tubes. The stop rod, which maintains the tube in operative position, is carried by arms connected to a rock shaft, and an additional arm on the latter engages a double-armed release lever 37 resting against a stop pin 39.

The release lever 37 may be operated, through the medium of the Jacquard mechanism, by means of a spring-controlled pull 38 for releasing the stop rod 36 and efiectin'ga change of weft thread whenever required;

- ig; 2 shows a device whereby the release of a stop and the change of weft'may be effected by means of the Jacquard cards and whereby the number of successive picksof the "same thread can be varied automatically. Therelease' lever 37 is adapted to co-operate with tappets 41 connected to a seriesof discs 40 'mounted on 'bell cranks 61 arranged to rock about a shaft 44." Bellcranks-and discs normally occupy the position shown by dotted lines in Fig 2, ,and, they are moved selectively through the me- 55 dium of the Jacquard cards into the operative position shown by full lines. Each disc is connected to a ratchet wheel 42 which inthe "operative position engages the detent pawl 47 and also'engages with an operating pawl (not shown) mounted on a reciprocating slide 43. The discs are controlled by springs ['45 and their normal angular positions are determined'by stops 60 which abut against and efiecting a change of weft, will therefore 30 "be. different for each particular disc. 'On the discs being withdrawn from the pawl they positions.

Having now particularly described. and ascertained thenature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a device of the kind described, a series of tilt-ably mounted weft tubes, Jacquard rods connected to said tubes to tilt the same into and out of weft delivering positions selectivcly, a nose piece on each of said rods, and.

a stop rod extending transversely of the Jacquard rods in the paths of said nose pieces and constituting a latch to hold the respective tubes tilted.

2. In a device of the kind described, a series of tiltably mounted weft tubes, J ac--,-- quard rods connected to said tubes to tilt the same into and out of Weft delivering positions selectively, a nose piece on each of said rods, a stop rod extending transversely of the Jacquard rods in the paths of said nose pieces vand constituting a latch to'hold the respective tubes tilted, an arm on which said stop rod is supported, a pivot for said arm,

1a :trip arm projecting from the first arm, a

trip lever pivoted to rest againstthe trip arm and movable to move the stop rod into nose releasing position.

3. In a device of the kind described, a series of tiltably mounted Weft tubes, Jacquard rods connected'to said'tubes to'tilt the same into and out of Weft delivering positions selectively, a nose piece on each of said rods, .a stop rod extending transversely ofithe Jac- "q'uard rods in the paths of said nose pieces and. constituting a latch to hold the respective tubes tilted, an arm on Which said stop rod iissupported, a vpivot for said arm, a trip ,armprojecting from the first arm, a trip lever pivoted to rest against the trip arm and movable.to move the stop rod into nose refleasing position, andmeans for automatically varying the number of successive picks I of the same thread.

4. In a device of the kind described,a series of "tiltably mounted Weft tubes, Jacquard rods connected to said tubes to tilt the same into and out of weft delivering positions selectively, a nose piece on each of said rods, a stop rod extending transversely of the Jacquard rods inthe paths of said nose pieces and constituting alatchto holdthe'respective tubes tilted, aniarm on Whichsaid stop 'rodis. supported, avpivot for said arm, a trip armproj ectingfrom the first arm, a trip lever pivoted to restagainst the trip arm and movv e able :to movethe stop rod into nose releasing position, means for automatically varying the number of successive picks on the same thread, said means comprising a series of disks, a series of taimets connected to the Idis'ks, the said disks beingselectable by the Jacquard cards and operated by the loom, the saidtappetsbeing arranged on the disks in order'that the number of loom beats required for'the re'leaselever is different ,for y ,each particular disk.

"Dated the 12th day of May, 1930.

G OTTLIEB LIEBENDER.

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