US1038678A - Magazine-stop for weft-replenishing looms. - Google Patents

Description

E. s. sTIMPsoN. MAGAZINE STOP FOR WEFT REPLENISHING LOOMS.

APPLIOAIION*A FILED MAY 8, '1911.

l 1,033,67@ Patented sept, 17, 1912.

uengaging the ratchetl 9. The detent has a handle 15, by means of which it can be swung outwardly to the position shown in F 1g. 2, thereby freeing its tooth 14, from the ratchet 9; The feed pawl 19, has a feed tooth 26, at its upper inner end which enlgages the ratchet 9 to feed the magazine.

This feed pawl is lifted by a spring 31,V

tent 11'); it has a cam slot 27, into which enters a laterally projecting pin 16, on the detent 1l; and it has a slot 30, into which enters a laterally projecting pin 29, carried by the transferrer 7 ln all of these de scribed particulars the construction shown is that of said patent of Stimpson and Southwiclr, together with other known and vusual instrumentalities of the Northrop Then the transferrer 7, descends for the purpose of making a transfer of weftlcar riers, its pin 29, encounters the bottom of aperture 30, of the feed pawl 19, thereby moving said pawl downwardly along the` supporting pinv `18, and compressing the spring 31. This lowers the tooth 26, below the next tooth of the ratchet 9. When the -transferrer is restored by the spring A,'

to its normal position, the spring 5l, lifts the feed pawl and accordingly feeds the vmagazine one step .so'as to bring the next spa-re weft-carrier into transferring position against the Stop 6. lWhen it is desired to refill the magazine the detent 1l, is pulled Aforwardly throughits'handle l5, to the position shown 1n Fig. 2. During this forward.

swing the pin 1G, on the detent encounters the cam surface 28, of the feed' pawl 19, thereby swinging it. free from the ratchet 9. Accordingly, the magazine can then be 'l turned freely in both-directions for'relilling. f These operations are the sameas in said patent of Stimpson and Southwlck,

The present improvement consists in proriding the magazine feed mechanism withastop which prevents the action of the weftreplenishmg mechanism when the feed mech anism is inoperative with respect to the magazine, as shown in Fig. 2 For this purpose the feed pawl 19, is provided with a downwardly extending projection E, which constitutes the Weftereplenishing feed mechv'anism stop. This stop E, extends into the proximity of an abutment G, on the spring,-` lifted fecd dog B. j .l/Vhen the feed mechanism is in the position shown' in Fig. 1, vthe stop E, -occupies an uplift-ed position, as shown in Fig. 1, where it does not interfere with the elevation of the transferrer dog B,

into transferring position.` Fig, 1,.shows the transferrer dog B, uplifted into position where it is in the path cf the lay bunter C and, as there shown, the location of the stop E, is such that it does not interfere with the necessaryl replenishing movementl of the .transferrer dog B.' In case, however, the feed mechanism is swung forwardly into inoperative position, shown in Fig. 2, the stop E, is lowered and it is then in the path of the abutment G,'on the transferrer dogB, and accordingly preventsy an elevation thereof into the path of the lay bunter C,`so that no movement' can be transmitted to the transfer-rer 7, and consequently vno damageA can' occur. Fig. 2, shows in dotted lilies the position which the dog B, would have to occupy in order that the transferrer'i, might be moved. Fig. 2, shows the leading weftcarrier 5, on the magazine occupying an improper position may be the case when the magazine is being refilled) and -it is obvious that if the transferrer should then descend it could not transfer said leading weftearrier and some part of the mechanism would have to give way.

The length of the' stop E, and its relation to the abutment Gr, on the transferrer dog are such that any outward movement of lthe feeding mechanism sufficiently far to free the feed pawl 19, from the ratchet Vprevents the elevation ofthe spring-lifted transferrer dog B, to its transferring position in the path of the lay bunter C. Likewise, the restoration of the feeding mechanisni to operative position sufficiently to leave the transferrer dog B, free to move into t-ransfer-ring position, results in the-movement of the rotary magazine to correct' position, so that no weft-carrier can be improperly positioned with respect to the transferrer.

l claim- 1. An automatic weft-replenishing loomhaving, in combination, a rotary magazine for spare weft-carriers; feed mechanism for -said magazine, comprising a' hand-movable detent and a feed pawl; a transferrer for transferring weft-carriers from said magazine into weaving position `a spring-u lifted transferrer dog mounted on said trans errer; and' a stop on said feed pawl, saidstop being normally out of the path of said dog but being moved into position to obstruct the lift of said dog whenever the feed mechanism -is inoperatively positioned with respect to said'magazine.

An automatic weft-replenishing loom having, in combihation, a rotary magazine f or spare weft-carriers; feed mechanism for said magazine;- a transferrer for transfer.- ring weft-carriers from said magazine intoy l weaving position; vaspring uplifted dog mounted on said transferrer; 'and a stop movable with said feed mechanism, said stop being normally out of the path of said ldogbut being moved into position to obstruct the lift of said dog Whenever 'the feed mechanism is inoperatively' .positioned with from said magazine into Weaving position;'

and a stop on said feed pawl, said stop being normally out of operative position but being moved into position to prevent the action of the transferrer Whenever the feed pawl is` inoperatively positioned With respect to said magazine.

fi. An automatic Weft-repienishing loom having, in combination, a magazine for spare vweft-carriers; feed mechanism for said magazine; a transferrerfor transferring weft-carriers from said magazine into Weaving position; and a stop movable with said feed mechanism', said stop being-normally outof operative position but being moved into position to prevent the action of 25 the transferrer whenever the feed mechanism is r- 'inoperatively positioned with respect to said magazine.

In Witness whereof, I have hereunto signed my name in the presence of two sub 30 scribing Witnesses.

' .EDWARD s. sTIMPsoN. Witnesses E. D. Oseoon, C. `W. PECKHAM.

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