US2661775A - Shuttle lock for looms - Google Patents

Description

Dec. 8, 1953 J. CHAPMAN, sR., ETAL 2,661,775

SHUTTLE LOCK FOR LOOMS Filed OCL. 13, 1950 l 2 Sheets-Sheet l l,4,9 f27 (Q5 Z5 NVENTORS ATTORNEY Dec. 8, 1953 J. CHAPMAN, sR., ETAL 2,661,775.

SHUTTLE LOCK FOR LOOM-S Filed OCT.. 13, 1950 2 ,Sheets-Sheet 2 INVENTORS Jmwfqamzx ATTORNEY Patented Dec. 8, 1953 joNlTED STATES PATENT OFFICE SHUTTLE LOCK FOR LOOMS James Chapman', Sr., and Roger Nixon Reynolds, Sr., Atlanta, Ga.

. App-Imation october 1s, 1950seria1No. 190,034.Vv V5 claims.' (c1. 13s- 187) Our invention relates to' shuttle Vlocks f for looms, and it is an object of the same to provide means for locking a shuttle in its box at the end of its stroke across the lay and to prevent rebounding of the shuttle, which means is controlled by the movement of the shuttle itself.

Other objects are to provide a shuttle locking means that is positive and certain in action and simple in construction, which is so durable Ythat it will wear as long as other parts ofthe loom, and which will release the shuttle completely before the picker strikes it in a Vpickingoperation.

Referring to the annexed drawings, which are made a part of this application and in which similar reference characters indicate like parts.:

Fig. 1 is across sectional View of so much of a loom as will illustrate a shuttle and parts cooperating therewith for the purposes of curinvention, only one end of the lay and cooperating parts being shown and it being understood that certain parts are duplicated at the other side of the loom, Y l

Fig. 2, a top plan ofthe same,

Fig. 3, a section lengthwise of the loom, on line 3-3 of Fig. 1,

Fig. 4, a View similar to Fig. 1, but showing the parts in another position,

Fig. 5, aplan of, parts shown in Fig. 4.

Fig. 6, a longitudinal section on line 6-6 Vof Fig. 4, and

Fig. '7, a detail of parts shown in other figures.

VIn the drawings, reference character 2Dl indicates the crankshaft ofa-loom, which crankshaft is connected by a pitman 2| at each end. kof the loom to brackets 22 on the lay sole 23,/ that is supported on lay swords 24. A shuttle 25 moves in a race on the lay sole, from one to the other of two shuttle boxesat the ends of the lay, the shuttle being impelled by a picker stick 26 with a picker 21 at its upper end. The shuttle boxes comprise upstanding front members 28 and rear binders 29 that are moved by springs 30 and protection springs (not shown) about pivots 3l to arrest the shuttle and hold it in place in a box. All the parts so far described are of conventional character as commonly used in looms.

The device of our invention comprises a swivel stand 32 that is aixed tothe lay by bolts 33, said stand carrying what We call a swivel 34 which is a lever of the first class and is mounted on a pivot 35 for oscillatory motion in a plane extending lengthwise of the loom, said lever 34 being biased toward the position shown in Fig. 6 by a spring 34. A bunter 36 is secured to the y f 2 pitman 2| by a bolt or screw 3l, said bunter comprising an arm extending alongside thepitman and preferably being adjustable along the pitman to vary the time at which it acts during the beat up of the lay. The swivelA has a laterally extending finger 38 which extends into the path of movement of the inner end of the binder 23, so vthat it presses the binder toward the shuttle when free to act, the spring 34 serving as binder pressing means auxiliary'to binder spring 30 and protection rod spring. Y A latch 39 is formed onor attached to the righthand end of a rod 40V that is' mounted to slide in a bore provided in a casting'4l secured to the lay, said rod being biased for endwise movement toward the swivel by means of a coil spring 42 encircling the rod and bearing at opposite ends against part 4I and an abutment 43 adjustably secured to the rod by a setscrew 44, said spring tending to move the parts into the position of Fig. l, Where the latch is positioned back of the swivel and prevents the swivel from being tilted byv spring 34 toward the Vposition for engagement of its arm 38 with the binder. Near the lefthand end of the rod 40 a block 46 is adjustably secured to the rod by a setscrew 41, said block carrying a pin 43 on which is mounted an abutment in the form of a roller 49 that lies in the path of the picker stick. The rod 40 is bent rearwardly to provide a part a lying underneath the lay, then upward to provide a vertical part b, then laterally to form an arm c, and a hook-like bend at its free end to bear against the frontface of finger 38. In the operation of our device, let it be assumed that the parts are in the position of Fig. 1, wherein the box at the right is empty, the shuttle 'moving toward the left as indicated by the arrow. The latches are held behind the swivels, by the action of springs 42, and therefore they hold the swivels away from the binders. The left hand picker stick is spaced somewhat from the limit of its leftward movement, and the box at the left is empty, to receive the approaching shuttle. When the shuttle now strikes the picker stick, or other movable part adapted to operate rod 40, the stick is moved to the left by the impact of the shuttle, as it goes home in the shuttle box, the stick contacting with roller 49 and pulling the rod 40 to the left against the action of spring 42 sufficiently to Iwithdraw the latch from swivel 34 and so to release the swivel 34 as the shuttle reaches home position. As soon as the shuttle contacts with the binder it begins to be retarded, as usual, but

other end of the lay is empty and subject onlin to the tension of its binder spring.

As the crankshaft turns in the directionbf the arrow in Figs. 3 and 6 it passes front center and i approaches top center in preparation for 'thneiit pick to the left, and at about l5"` before it reaches top center the bunter on the pitman rod engages the lower end of the swivel and moves itfi'o'the position of Fig, G toward that o f Fig. 3 away from trie binder. As the crankshaft reaches topfceii'tei the shuttle Fi's picked ot -off tlfe loose :the hunters new holding the swivels 'at both @aids fof the Ilay so as to remove tension of the biniifer's' from the boxes and both latches `rbving -ir'ito position underneathtlieirswivels.

the crankshaft passes back 'center the hunters J'pass away from the swivel-s, but the latches hold them fand lso maintain the binders in idii-positic-whi`1athe -shiittie compiete's its travel on this jpick. Wheat-he crankshaft rea-ches bttdmcenter or nearly 'so the shuttle'reaches home Av'ariel `pulls the latch from under theswivel brits. engagement .Witlith lifhad picker stick, arid theispriiigsf'snangi-sj etanche wires-pend'- inig'pickerjto-siiap'iriibiiicerinmiicking-bosaien.

It win bejaht/ions to tnoseski-ued in -tiieart that 'many 'changes 'may befirade in the mecha-- ni'sms herein 4disci ed and in their dmode 4'pr -operation, an without departing from thsiiirii lof are invention; and therefore wedofno-t-1iihivourselves "to what i's "shown thedrafwings 'and iescribedin the spcification, but omy'as indifcatedin trie appendeq'ciaiins, i Having funyiscfiea-'our'-iriveritin, weciaimis: v

1 .II` i a loom, a lay, a crankshaft, a ptman cijniietiiig 'the ray "to triecrariksriaft, a 55X 0n 'the lay .Spng-Tpidlsllittl Irbll'i and a pick'r stick, the 'ccmbmaticn'therfewthpf a :swivel stanti im nieflay, a Ieveijen the st-ana, `said lever 'being 'pivot or movemiitj in aspirine iiteridinjg lengthwise ie '10cm *aangaf-erf; tending laterally from s aii'ie rito the path 'of movement"fsaidtindr, esiiient @aus mei/ igfsaid lever to Aforce said finger binder, 'a bunter im tue'pitman fr moving said lever into idle position, a latch for holding said lever in such idle position, and means actuated by a shuttle at the end of its ilight for releasing said latch.

2. In a loom, a lay, a crankshaft, a pitman connecting the lay to the crankshaft, a shuttle box on the lay, a spring-pressed shuttle binder, and a .picker stick, the combination therewith of "a'levr pivtedl on the lafyfto'iswingro horizontal aiis, said 'lever having ansboveand Below said Lairis, resilient means biasing the lever to force its upper arm against the binder to augment the action 'of the binder on a shuttle, a bunter on the pitman for pressing against the lower arm of .the lever 'to 'ln''ve its upper arm away from said binder, a latch, and means for moving the latch intofthe'nath of the-upper arm during such action ofthe bunter.

and an abutment on the v'ia-'tch"i'oii *forr engagement by the picker stick to withdraw the latch rodfifom the-path ot sai-d upper-arm.

v5.111 a ioo lay, fa crankshaft, a piilnaii connecting the v'lay to A'the rakshaf-t, a l'e'vepivote'jdon the lay toh swing ma'pflane extending lengthwise bttheloin, arrhsnthe lever eiitending upward "and 'downward ffrom ivits pivot, r'esilient Ifneansbiasing JAthe upper arinfc' "the lever toward the bagder, an abutiiirit -cn the pit-man fo'riactingbh low'er-'arn =of the leverftoi'nove its upper arm away from the binder, a latch, and means for moving thelatchintolthepath:of-:said upper arm' during-such y"actior'iottima bu-liter.

JAMES CHAPMAN, SL i ROGER NiXoN'REYNoDs "sa

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