US2393077A - Shuttle eye - Google Patents

Description

Jan. 15, 1946. A. VlLLANl SHUTTLE EYE Filed Fb. 28, 1945 INVENTOR. ANTON/0 V/LLA/V/ ATTORNEY Patented Jan. 15, 1946 Antonio Villani, Milford, Mass,

Draper Corporation, Hopedale, Mass, a corporation of Maine assignor to Application February 28, 1945, Serial No. 580,090

6' Claims.

The present invention'relates generally to loom shuttles and, as illustrated herein, relates more particularly to means for preventingunthreading of such shuttles.

Automatically threading loom shuttles are usually provided with a threading block having a longitudinal thread passage, a side delivery eye and a transverse passageconnecting the longitudinal thread passage and the side delivery eye. During the first pick after a new filling carrying bobbin has been transferred to the shuttle, the shuttle is partially threaded and the filling thread is in the longitudinal thread passage. During the next or return pick the shuttle is completely threaded and the filling thread runs from the longitudinal thread passage, throughthe' transverse passage and into the side delivery eye. Under some conditions, the filling thread maybe thrown upwardly out of the side delivery eye and the shuttle will unthread either partially or comvided at the side delivery eye with a trap mem-' her which is supported by the block and has pr-' tions against which the filling runs during picking of the shuttle, one end of the trap member is so located within a recess formed in the threading block that the filling thread readily enters the side delivery eye but is prevented from moving upwardly out of the side delivery eye.

Another object of the invention is to improve generally upon the construction and operation of, shuttles and threading blocks therefor.

The present invention is illustrated as e mremovably supported and a cavity [8 communi-- cates therewith and in which a usual threading block is mounted and secured in position by a bolt 22. t

The threading block 20 is provided with ausual longitudinal thread passage 24 having a pair of tension pads 26 adjacent to the inner end thereof.

. The block 20 is provided with an outwardly and With the above and other objects and features in view, the invention will now be described with particular reference to the accompanying drawing in which:

Fig. l is a plan view of a portion of a shuttle in which the present invention is embodied;

Fig. 2 is a view in front elevation of the shuttle shown in Fig.

Fig. 3 is a view in section taken along the line IIII1I of Fig. 1;

Fig. 4 is an enlarged detail view, partly in section, showing the filling trap in position; and

Fig. 5 is a detail view, partly in section, showing the side delivery eye and trap in front elevation.

rearwardly' projecting-hook 28 which terminates in a groove or recess 30 formed in the shuttle body. The threading block 20 is also provided with a downwardly extending horn 32 beneath which the filling thread passes to the side delivery ye -17 The side delivery eye 34 is provided with a threadtrap member 36 which is arranged to permit the filling to enter the side delivery eye 34. The member 36 is preferably formed of relatively heavy and stiff steel wire which is preferably coatedwith a metal such, for examplaas chromium to provide a hard wear resisting surface, The wire is bent into a generally rectangular. shape, as shown best in Figs. 4 and 5. The trap is provided with a substantially vertical leg 38, the upper end portion of which is inserted in a hole formed in the threading block 2!). This vertical leg 38 takes the place of one of the usual hardened posts against which the filling bears when the shuttle'is picked in one direction. The wire'is then bent outwardly and forms a substantiallyhorizontal leg 42 which fits into a recess 44 formed in the body of the shuttle l0 and which extends across the bottom of the side deliveryeye 34. The wire is then bent upwardly to'form a substantially vertical leg 46 which is substantially parallel to the leg 38 and which fits into a substantially vertical recess formed in the outer wall of the side delivery eye 34. The wire is further bent inwardly, downwardly and slightly rearwardly to form an inclined leg 48 which terminates in a recess 50 formed in the threading block 20. The trap member 36 at the junction between the vertical leg 46 and the inclined leg s8 is provided with a projection 52 which is designed to prevent the filling thread from being caught between the trap and the wood of the shuttle.

When the shuttle ii] is picked out the right hand shuttle box after an exhausted bobbin has.

been replaced by a full bobbin, the filling thread passes between the tension pads 26 and extends into and through the longitudinal thread passage 24 of the threading block and under the hook 28, During the next, or return, pick the filling passes down under the horn 32 and is pulled inwardly over the inclined leg 48 and into the side delivery eye 34. The free end of the leg 43 extends into therecess-i: 511 a distance sufficient to prevent thethread from being thrown upwardlyand out of the eye during subsequent picks but does not interfere appreciably with the threading operation. The trap member 38 performs another necessary and desirable function in that the vertical legs 38 and 46 form: posts: over which the filling runs during operationof the shuttle;

Having thus described my invention, what I claim as new and desire to securezby LettersPatent of the United States is:

1. An automatically threading loom shuttle comprising a shuttle body having a. threading block and:- a side delivery eye, said. block having a longitudinal, thread passage and a. transverse. thread passage. communicating with said side delivery eye and a. trapmember. shaped. to pro.-- vide a pair of substantially vertical posts at opposite sidess of. the delivery eye, and. a. portion. pro.- jecting from the upper end of one: of the said posts toward the. other post-acrossthe top. of. said. side delivery eye and having a free end; portion, terminating. under. a portion. of said threading blockto forma thread trap.

I 2.. an automatically threading loom. shuttle comprising, awshuttle body having a threading block. and a sideldelivery eye, said threading block having. a longitudinal thread; passage. and a transverse thread. passage. communicating with said sidadeliver eye, and a trapmemher for said side delivery eye,. said trap member substantially parallel posts at each end of the side: deslivery eye,, one. of. said posts. having a. portion extending. across the top: of said. side delivery eye. and having; a. tree end portion extending under. a portion or said threading block to. permit the filling. threadto enter said side delivery eye but. preventingv said filling thread from thereafter moving upwardly out of. said; side delivery eye.

3.. An automatically threading loom shuttle comprising a shuttlefbody having. a. threading block anda side delivery eye,,saidthreading block having. a longitudinalthread passage andv a trans.- verse thread. passage communicating with said side delivery eye and a. trap. member for said side delivery eye supported by said block. and said shuttle. body, said trap member comprising. a substantially vertical. leg having a portion ex-- tending into said threading block and supported thereby, a substantial horizontal portion extending across the bottom. of said side delivery eye, a substantially vertical. leg parallel. to said first leg, and a portion. extending from said second leg. downwardly toward the first mentioned leg.

and having a free end portion terminating under a portion of said threading block.

4. In an automatically threading loom shuttle comprising a shuttle body having a threading block and a side delivery eye, said threading block having a longitudinal thread passage and a transverse thread passage communicating with said side delivery eye, said trap member being formed of a. singlepieceof abrasion resisting material and comprising a pair of spaced substantially parallel posts at either side of the side, delivery eye and connected at their lower ends by a bar extending across the bottom of said side delivery eye, one of said posts having a portion projected inwardly and downwardly across the top of said side delivery eye and having its free end portion terminatingbelow a portion of said side delivery eye toforma thread trap.

5. In an automatically threading loom shuttle comprising a shuttle body having a threading block and: aside delivery. eye, said threading block having alongitudinal threadpassage and atranse verse thread passage. communicating with said side delivery eye, said trap memberbeing formed of a single; piece of. abrasion resisting material and comprising a pair of spaced substantially parallel posts. at either side. of. the side delivery; eye. and. connected atv their. lower ends by a bar extending acrossthebottom of said side, delivery eye, one of said postshaving, a. portion. projected inwardly and. downwardly across the top; of said: side delivery eye and having its. free end portion terminating below a. portion of. said side; delivery: eye. to. form a thread trap; the. other of said posts being insertedin. a. substantially vertical hole; iormed in saidthreading blockv to hold said thread member in position.

6.. Inan automatically threading loom. shuttle comprising, a shuttle. body having a threading block and aside delivery eye,.said threading block having alongitudinal thread passageand a transverse thread. passage communicatingwith said. side, delivery eye, said trap. member'heingformed or a single piece. of. abrasion resisting material: and comprising a pair of spaced substantially parallel posts at either side. of the side delivery eye and connected. at. their lower ends by a bar extending across the. bottom of, said sidefdeliveryeye,v one of said posts having, a. portion projected inwardly and downwardly across the top. of said side. delivery eye and. having its free end portion terminating below a portion of said side delivery eye. to form. a thread trap, the. other of said posts being inserted in a substantially vertical hole; formed insaid threading block to hold said thread member in position, the bottom bar and the post having the inwardly and downwardlyprojecting portion being mounted in recesses formed in the shuttle body to prevent angular movement of the trapi'member when the, threading block. is secured in the shuttle,

ANTONIO

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