US1038679A - Magazine-stop for weft-replenishing looms. - Google Patents

Description

E. S. STIMPSON.

MAGAZINE STOP POR WEET BEPLBNISHING LooMs.

APPLICATION FILED MAY 8, 1911.

Patented Sept. 17,1912.

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E. S. STIMPSON.

- MAGAZINE STOP PoR WBPT REPLBNISHING LooMs.

APPLICATION FILED MAY 8,1911. v 1,3,?9 Patented Sept. 17, 1912.

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EDWARD S. STIMPSON, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COM- PANY, OF HOPEDAL'E, MASSACHUSETTS, A CORPORATION OF MAINE.

MAGAZINE-STOP FOR WFT-REPLENISI-IING LOOMS.

Specication of Letters Patent.

Patented Sept. 17,1912.A

Application filed May 8, 1911. Serial No. 625,887.

To all 'whom t may concern:

Be it known that I, EDWARD S.- STIMPSON, of Hopedale, in the county 0f Worcester and State of Massachusetts, have invented anew and Improved Magazine-'Stop for Weft-Replenishing Looms, (Case 13,) .of which the following is a specification.

The present invention is an improvement used in connection with the rotary battery or magazine of automatic weft-carrier replenishing looms such as exemplified by United States Letters Patent of' Northrop,

No. 529,940, November-27, 1894. In such `a correct position when the lweft-replenishing mechanism of the loom is brought into action, and as the resultdamage is apt to occur either through the smashing of a weftcarrier or the breakage of some part of the loom mechanism.

The ob'ect of the present invention is to prevent tile action of the weft-replenishing mechanism whenever the magazine feed mechanism is inoperatively located with respect to the. magazine.

The present invention is anv improvement upon the invention set forth in United States Letters Patent of F G. and J. H. Cobb, No. 780,266, January 17, 1905.

In-accordance with the present invention the detent of the magazine feed mechanism itself is providedv with a stop which is interposed in the path of a part of the weft-re- Vplenishing mechanism so as to stop the action thereof Whenever the feeding mechanism is removed from feeding position relatively to the magazine.

rIhe present improvement has been aplied to the feed mechanism which is shown 1n Letters Patent of the United StatesNo. 1,019,855, March 12,- 1912; and inthe ac- `companying drawings the same feed mechapresent improvement residing in the added part-s and their combination with the other lnstrumentalities;

In said drawings-Figure 1, is a vertical cross-section through therotary magazine, battery orhopper of a weft-carrier replenishing loom and through the associated portions of the transferring mechanism. In Fig. 1, the feed mechanism is shown in its normal position vand the transferrer dog is shown liftel to its transferring position. Fig. 2, is a detail horizontal section in the plane indicated by the' line 2-2 in Fig. l. Fig. 3, is adetail side View of the detent and the magazine stop with which it is provided. Fig. 4, is a detail horizontal sect-ion in the plane indicated by the line 1 -4 in Fig. l. Fig. 5, is a-perspective view of the feed pawl. Fig. 1, and showing also the lay and shuttle in section. In Fig. 6, the feed mechanism is shown in inoperative position and the stop is shown obstructing the movement ofthe transferrer dog.

A, is the rotary magazine, batteryI or hopper turning on the fixed stud B, and shown equipped with spare weft-carriers C. D, is the usualltransferrer turning on the stud E, held uplifted bythe spring il", and carrying the pivotal spring-uplifted transferrer dog G, which is normally held depressed by the coperating devices of the weft-replenishing mechanism but which is permitted to rise under the influence of its spring when a transfer of weft-carriers is demanded. H,

All of effect a transfer of weft-carriers.

these features are similar in construction,V

organization and mode of operation with what has long been used in the Northrop loom.

,The magazine has a fixed ratchet I, with which coperates a feed pawl J, to feed the magazine step'by step as the spare weftcarriers are transferred one by one to the shuttle by the transferrcr D, and also a detent K, which normally restrains the magf azine from backward rotation. The detent K, is pivoted at I), (see Fig. 3), to a stationary -part of the loom and it is weighted at la, so as to normally occupy the position shownl in Fig. 1',coperating with the ratchet I, to prevent backward rotation of the magazine. rIhe detent has a tooth c, which directly cngages the ratchet teeth. The feed pawl J has a iixed'pin d, which is journaled in a sleeve c, formed on the transferrer D. A

spring f, attached to said sleeve and' (indirectly)y to the pin d, acts to swing the feed pawl toward the ratchet. The feed pawl has a tooth L, which directly cooperates with the ratchet teeth. This tooth L, is pivotally mounted at g, on the feed pawl J, and it is pressed upwardly by a spring It. A shoulderK i, of the tooth L, extends laterally between the shank of the detent K, and the ratchet ward so as to clear the ratchet.

I. The feed pawl J, has a forwardly projecting h'andle M, extending beyond the pe riphery of the magazine (as shown .in Figs. l, and 6) to enable the feed tooth L, to be swung clear of the ratchet, as shown in Fig. 6, when the magazine is to be freed from the feed mechanism to ermit 1t to be turned freely in refilling wit weft-carriers. Whenl tooth of the ratchet and the spring f, then Swings the feed pawl inwardly toward the ratchet so that the tooth L, is beneath the next ratchet tooth. When the transferrer D, again rises under the influence of the spring F, the magazine is-rotatedone step so as to bring the next weft carrier against the stop N, thereby positioning it roperly beneath the transferrer D. :In al *of the respects thus far described the feed mechanism is similar to that set forth inthe above mentioned application. y

In accordance with the present invention the detent K, is provided with a magazine stop O. This sto is pivotally connected at s, to the outer en of a multiplying lever P, which at its inner end t, is pivoted to the detent K. This lever P, 1sv centrally fulcrumedjon a fixed pin w, carried at the upperv end of a stationary bracket arm yQ. The lever P, is slotted at its fulcrum, as shown in Fig. 3, so as to compensate for the dierent centers on which it and the detent K, swing. The stop O, has a lengthwise extending slot in which enters a fixed guide pin y.'

The transferrer dog G, has an abutment R, which is immediately beneath the stop O. When the feed mechanism occupies its nor-|`y mal position, shown in Fig. 1', `the stop 0,v

occupies a saciently elevated position so as not to, obstruct the upward swing of the transferrer dog G, to -Iits transferring position. Fig. 1, shows the transferrer dog G, swung to its uplifted positionfwhere it is in position to be encountered by the lay bunter a, in order 'the multiplyingflever P, a small swi to effect a transfer of weft-carriers. When, however, the feed mechanism is swung forward, as shown in Fig. 6, to clear the ratchet I, of the magazine (thus leaving the magazine free tobe turned in either direction), the stop O, is moved downwardly to the position shown in Fig. 6, where it obstructs the upward swingofv thev transferrer dog Gr. Accordingly, should the weft replenishing mechanism be then called inaction, the dog cannot swing upwardlyinto the path of the lay bunterla, and consequently'I there is no movement of thetra'nsferrer.l Fig. 6, shows the magazine insuchian abnormal position that the lowermost and leading weftcarrier is then improperlyffplae'd jwith respect to the transferrer,` so that'J- should the transferrer then act aA smashjof `some sort would occur. This vis .prevented Vby the' position which the stop O, then occupies. Since the stop O, is connected withV the detent K, by of the detent suiiices to project the stop O, far enough down so as to prevent the lifting of the transferrerdog to cooperative transferring position with respect to the lay bunter I. Consequently, a transfer is prevented except at such time as the feed mechanism occupies its correct feeding position `with respect to the magazine.

I claiml,

1. An automatic weftreplenishing loom having, 4in combination, a rotary magazine carrying spare weft-carriers; a feed ratchet on Such magazine; a transferrer that transfers spare weft-carriers one by one into weaving position; a spring uplifted transferrer dog carried by said transferrer; a feed pawl actuated by said transferrer and coperating with said ratchet; a detent cooperating with said ratchet to-prevent backward ymovement of said magazine, said detent aiid feed pawl being manually movable into inoperative position with respect to said ratchet; a movable stop coperating with said transferrer dog anda multiplying lever connectin said detent and said stop, so that when sald detent is in normally operative relation with respect to the ratchet, said sto does not interfere with the movement o said dog, but when said detent is moved away from normal position relatively to said ratchet, said stop prevents the functional movement of said dog.

2. An automatic weft replenishing loom having, in combination, a rotary magazine carrying spare weftcarriers; a feeding ratchet on such magazine, a transferrer that transfers spare weft-carriers one by one into weaving position; `a feed pawl actuated by said transferrer and coperating with said ratchet; a detent coperating with said ratchet to prevent backward movement of said magazine, said detent and feed pawl being movable intoj inoperative position with respect to said ratchet;` and a movableV stop connected to said detent, so that when said detent is in normally operative relation with respect to the ratchet, said stop does not interfere with the movement ofI said transferrer, but when said detent is moved away from normal position relatively to said ratchet, said stop prevents the functional movement of said transferrer.

3. An automatic weft replenishing loom having, in combination, a rotary magazine carrying spare weft-carriers; a transferrer that transfers sparer weft-carriers one by one into Weaving position; feed mechanism for said magazine; a movable stop adapted t0 preventthe action of said transferrer; and a multiplying lever connecting said feed mechanism and said stop, so that When said feed mechanism is in normally operative relation with respect to vthe magazine, said stop does not interfere with the movement of said transferrer, but When said feed mechanism is moved away from normal position relatively to said magazine, said stop prevents the functional movement of said transferrer.

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

EDWARD S. STIMPSON.

Witnesses:

C. W. PEGKHAM, E. D. OsaooD.

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