US1684780A - Self-threading shuttle - Google Patents

Description

sepa 18, 1928. 1,684,780

` lc.. RICARD v SELF THREADING SHUTTLE Filed Oct. 4, 1926 'a thread loop vention, 5

UNITI-:n.srArEs -1-684780 'r1-:Nr ori-ica -OHBIsrY arcani); or. woonsocxnr, RHODE IsLArm.

snm-mmm@ SHUTTLE Application mea omnia, ma serial No: 189,858.-

This invention relates to an improved selfthreading shuttle for looms and more particularly to a shuttle of this character having means for positively preventing the removal of the thread from either end of the thread passage when the shuttle is in use. While various means have been employed heretofore in thel construction of self-threading shuttles for preventing the removal of the thread from the thread passage none of these devices since a loose bobbin may overrun to produce at the bobbin end of the thread passage or the thread may be caused to loop at the tip end ofthe passage as the bobbin contacts with the thread may be thrown from the passage at either end thereof. In the previous constructions of this character only one positive thread lock has been provided thus in" all from one end of the passage where it may be caught upon some projecting part and broken by further movement of the bobbin. or even detached from the single locking means employed. Y j

It is the object of the present invention to provide ashuttle of this character which will permit self-threading and positivelylock'the thread against removal from the thread re ceiving passage. In the accomplishment of this object a positive thread locking means is provided at each end of the thread passa e thus preventing the removal of the thread from any portion of the. operation of the shuttle.`

Other objects and advantages of the invention relate to various structural details and modes of operation as forth inthe detailed description tofollow.

Referring to the drawings:

Fig. l perspective view of a self- 1s a threading shuttle embodying the present `in- Fig. 2 is across sectional view taken along Y the line 2-2 of Fig. 1" and showing the construction of the thread locking means located at the bobbin end ofthe thread receiving passageyand, l n 't Fig. 8 is a perspective .view of the thread block showing the thread passage and' the thread locking means located adjacent to the shuttle tip.

The shuttle body l is of the usual constru`ction and has a bobbin chamber 2 in which the bobbin 3 carrying the thread tais detachably has proved entirely successful,

picker stick whereby the.

vpassed thereover and the Ily retained in the passage curved tip ll ofthe thread bloc-lr 6 which;

passage during the v will be Amore fully-set sary.

supported, as is usualn devices of this charac er.

Forwardly of thebobbin shuttle is provided with a assage 5 which extends through aA threa lock 6, preferably of metal, the thread r serving passage communicatin with a side delivery eye 7 through whic the thread' passes in the reciprocating movement of the shuttle;

The thread receiving passage 5 of the block 6 may be substantially straight to yfacilitate drawing the thread into the passage on the chamber 2 the first pick of the shuttle after replenislnnent.`

AA curved thread lock 8 has one end therethread receivingv ofsecured in the'block upon one side of the. i

passage 5 adjacent to the bobbin end of the passage, the thread lock 8 being formed of thin exible material extending across the ee endl lies within the groove 10 formed in the wall of the passage. Y

is vconstruction readily permits the thread to be i 8 whereupon 'the Hexible character of the lock causes the free e d thereof to snap back into the groove a r the. thread has thread is positiveat this point. The

serves as a thread director to direct the the shuttle after suitable shape, across-the case it termlnates short of the passage since the thread lock cooperating therewith renders rther extension of the curved tip unnecesg i thread into the passage 5 on the first pick of replenishment may be of any and may or may not entend A'thin 'flexible member l2 has one end secured to the thread block 6 on the opposite side of the passage from the thread directing tip 'l1 and extends downwardly across the passage 5, the Ifree end of said flexible member contacting with a portion of the thread directing member l1 to readily permit the thread to be drawn downwardly over the thread directing member 1l into the passage 5 but positivelyfpreventing removal of the thread from the passage.-

It will' be understood that on the return movement of the shuttle after replenishment the thread will pass through the side delivery eye 7 adjacent the groove 14 for delivery.

It will be understood that the construction passage and curving downwardly so that the cases permitting the Vthread to be thrown fr passage 5, although inl the present shown herein readil permits the threadto bedrawn into the t' read receiving passage onthe'irst pick after replenishment and positivel retains'the thread in the passage pre- -`l venting it from being thrownout both at the bobbin end and at the tip end after the thread haspassed the free ends bf the thread locks 8 and 12. Thus .breaking of the thread by reason of its escaping from the thread re- 10 ceiving passage and looping and catching on obstructions in positively prevented. While the thread block shown is formed with a substantially straight passage 5` and with the thread directing portion or tip terminat- 15 ing short of the l'passage 5 to facilitate threading, the present improvement may be readily applied to 'and used with types ofthread blocks. What I -claim is:o 20

block havin a llongitudinal thread receiving passage, an positive' locking means located at opposite ends of said block to prevent the.

rernoval'ot the thread from saidpassage.

2. In a seit-threading shuttle having a side delivery eye and a passage rigid thread director positionedV 1 side 0i said passage, and a yieldin 'tending downwardly7l from the bo y of the I0 shuttle diagonally across the passage and into contact with the thread director to normally close the passage 'and prevent removal ofthe thread from the passage.

' 3. In av'selfhreading block provided with a vpassage open at the top for the insertion of the thread,`a

cated `Within and extendingngentirelyl across A the effective Width of the vpassage .in said 'block 0 adjacent to one end 'of said passage,

upon one any of the usual"V 'of said passage,

1. In a self-threading shuttle, a threading for the thread, a

-lexible curved thread lockv loceither end of said passage.

resilient member extending across said passage opposite end of said passage for preventing removal of the thread from said passage.'

i 4. In a self-threading shuttle, a threading block provided with a longitudinal thread receiving .passage and having a groove formed in the wall of the passage adjacent to one end adjacent to the of said block, a curved thread lock havingv one end secured to the block and the opposite end positioned in said groove, and a flexible thread lock at the opposite end of said thread :receiving passage.

5. In a self-threading shuttle, a. threading block provided with a longitudinal thread receiving passage and having a rigid thread directing portion located adjacent to one Side carri/edby said blocl:l and:

and a flexible thread lock I secured to said block upon the opposite side y of said passage and extending downwardly L` and into contact with the portion' of said block.v (i. Ina selfhreading shuttle, block provided with a .longitudinal thread receiving passage and having a groove formed in the wall of the passage adjacent to one end thread directing a threading of said block, and a-curved thread lock ezr-` tending across the passage having one end seciired to the block and t e opposite end positioned in the groove to ositlvely prevent the removal of the threadrom the passage.

7 In a self-threading block having a lon passage, and iiexi le locking members lo.- cated at opposite endsof said lpassage for osishuttle, a threading itudinal thread' receiving 'tivelypreventingremovalof the thread rom In testimony whereof` I have' aixed my signature..

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