USRE16376E - Thread clampinq mechanism for looms - Google Patents

Description

July 6 1926. Re. 16,376

A. C. VARNUM AL THREAD CLAIPING IEGHARISI F01! LOOIS Original Filed March 10. 1922 JWRYW 1122;".

1; securely and. efi eettvelj .clanijpini 'eiihe'r the ihre d be" A lled t. of imfi mochanism applied thereto;

* s-Bqf u sshuttle box 2, is adapted to e h a m nner y a y showni= A porti on-oi th am A shuttle I Reissued July a, 1926.

invention relates to automatie'filling replenishing looms-and basparticular referof the type in which meaifi ii are provided inrpeirting the threads o ling w are be e'ected upon filling replen shment at points; jacent the shuttle iedge of cloth, so. that .Iooseends X caugbtand'wqven' into or be left hanging to interfere In laonis of e above described, e, it has been-heretofore customary to p a r iithe ad acent to the shuttle by athread mountedion a swinging 'member, which member may servev as a shuttle feeler, thelhto. the thread ad' cen to'the edge of the 0th by a temple't rea bi te Theogiect oi v a: pg'hovlds 1 y it e rea 'ent-to sliiittle ,or coarse int SQ-tbatthore W1 bebntlittle oi ,.out of the clamp it thtehblggipilagbhfig e at; e p i s; fa. y temple thread. m gi emu ereinafter fullyappear, reference being. had Tfio he-swarm d i w n v ;T==Fig.: 1 isatransver'se fiectioglal View of a i o ofa loomhawiing our read clampview 'in side "imiiiil 7 2 is an enlar 15; etails of the tion showing the -l ngee ;o I.

is-a front view of the parts shown inFig gplan'view of the stationary empingmember. i v .nLike referencecharacters refer to like as in. the diii'ei ent'fi'ggfes.

' e la 1,

suitable means} not e magazine o f'the ted at 31nd a rock shaft 4,

doom is. indies oitend'mg across the loom, is adapted to be turnedjri-theqdireotion of the arrow to operate theweft replenishi V mechanism of the R ot un n ted on 6',-;-1s no y adapted to be maintained in an inoperative A vW TH STAYIEZS 'llla'fia d m -Re. 16,37&

PATENT. owl-Ce...

m8!!! BIRDBALL, OI SOUTHZBRIDGE, NASA- mSET'I'B. 1

n w I roa Loous fikfld lo. 1420,4110, men sunn 3, use am m. mesa, fled mm. 19,1922. Application for reign! m mm :1, 1925. Serial R0. was.

position with respect to the lay 1 by means of a spring 7 acting through an arm 8, and a lever 9 mounted on the rock shaft 4 is adapted to move the feeler member in the directlon o'f the lay 1 upon operation of the filling replenishin mechanism.

As best s own in Fig. 2, the upper end of the shuttle ifeeler 5 is rovided with a notch 10; to vreceive the filling thread when "the feeler is moved into 0 rative ositiofn with respect to the shuttle ox 2. fixed blade 11 is secured to the feeler 5 at the lower e e o'f the notch and a movable cutting blade 2 is pivotalltfi mounted on a stud 13 extending through e feeler member 5. The movable blade 12 is provided with a heel portion 14. whichis adapted to be engaged by the lay 1 when the shuttle feeler 5 is moved into its operative position, whereby the blade 12 is turned on the stud 13 to part the thread between the cooperating edges of the blades 11 and 12. The movable blade 12 is further provided with a pin 15, whereby the blade may be opened after partin the thread, as will be hereinafter described: v

The parts of a loom described thus far represent a usual and well known construction and therefore, form no part of our present invention which, as previously stated, resides in t e provision of improved means for clamping the filling thread as it is severed b the blades carried by the shuttle feeler. othis end a plate 16 isinounted on the shuttle feeler 5 by the stud 13 and is held in close engagement with the movable blade 12 by means ofa resilient member 17. As best shown vin Fig. 4, the plate 16 is provided with an offset portion 18 located opposite to the stationary blade 11. The portion 18 provides a space 18 within which is rotatably mounted a roller 19 on a 'n 20 extending between the walls of the 0 set portion 18. The roller 19 i '0'! such diameter that the movable cutting H 12 is adapted to just engage the periphr of the roller when it is moved d gma y to part and clamp the filling thread, as will now be defeeler 5 into the operative position shown in Fig. 1, in which the cutting blades 11 and 12 are open and the heel 14 is in the path of a projection 21 on the la. 1. As the latter completes its forward eat projection 21 enga es the heel l4 and thereby turns the cutting lade 12 about its ivot in the direction of the stationary bla e 11 and the roller 19. As the filling thread is parted by the edges of the blades 11 and 12, it is also clamped between the blade 12 and the roller 19. The clamping of the thread occurs without any'tendency for it to be severed by the blade 12, for the leason that the rotatably mounted roller 19 turns slightly as the thread is jammed between the blade 12 and the periphery of the roller 19, thereby effectively preventing severance of the thread. As the shuttle feeler 5 returns to its inoperative position, the parted thread is still tightly clamped, so that there is no ossibility of its being woven into the cloth fore it is parted by the temple thread cutter. After the temple thread cutter has operated to part the thread adjacent the cloth, the pin 15 on the heel 14 is adapted to be engaged, by a suitable projection not shown, to turn the blade 12 1n a clockwise direction about its pivot, and thereby release the severed thread.

From the foregoing, it is ap arent that we have provided an extreme y effective means for clamping a filling thread as it is severed at a point adjacent to the shuttle, and that our improved clamping means adapted to secure hold either fine or coarse thread or yarn until it is severed by the tem le thread cutter at a point adjacent the cloth. Our clamping mec anism is particularly advantageous when a filling feeler fork is employed between the temple thread cutter and the thread parting and clamping mechanism, for the reason that the thread cannot be readily drawn from the clamp as it enga es the filling fork on the movement of the lling feeler. Furthermore, our im-' proved clamping mechanism is so constructed that it is not liable to sever the thread at the point of clamping, as in previous constructions, for the reason that the roller turns slightly as the thread is wedged between the movable cutting blade and the periphery of the roller. The fact that the thread isheld by rolling friction between the roll and an opposed surface allows considerable force to be applied to the moveible blade for cutting without danger of the impact severing the thread at the point of clamping.

lVhile we have shown our improved clamping mechanism in connection with a particular form of filling feeler and thread parter, it is not so limited, but is capable of being ap lied to other loom constructions without eparting from the spirit and scope of our invention. We desire therefore that only such limitations be imposed thereon as may come within the scope of the appended claims.

We claim:

1. In an automatic filling replenishing loom, the combination with a thread parter to act upon the thread of the filling sup ly to be abandoned and comprising a mova 1e blade and a surface of'revolution, of means for moving said blade to clamp the thread by rolling friction between said blade and said surface of revolution.

2. In an automatic filling replenishing loom, the combination with a thread parter to act u on the thread of the filling supply to be a andoned and comprising a b ade, of a freely rotatable member adapted for its movement in connection with said blade to clamp the thread between op osed surfaces of said blade and of said mem er, said blade and rotatable member being relatively movable bodily.

3. In an automatic filling replenishing loom, the combination with a thread parter to act upon the thread of the filling sup ly to be abandoned, and comprising a mova 1e blade, of a freely rotatable roller having its axis parallel to the said blade, and dependent u on the movement of the blade to clamp the t read.

4. In an automatic filling replenishing loom, the combination with a thread parter to act u on the thread of the filling su ply to be a andoned, and comprising a bl ade, of a relatively movable plate in engagement with said blade and carrying a freely rotatable roll with its axis parallel to said blade.

5. In an automatic filling replenishing loom, the combination with a thread parter to act u on the thread of the filling su ply to be a andoned, and comprising a b ade, ofa plate in en gement with said blade and carrying a reely rotatable roll with its axis para lel to said blade, said plate and blade being relatively movable the said blade being substantially tangent to the surface of said roll.

6. In an automatic filling replenishing loom, the combination with a thread parter to act upon the thread of the filling supply to be abandoned, and com rising a relatively movable blade and surface of revolution,

of means for causing a relative bodily move- 8.11: an automatic filling replenishing clamping the thread between them, one of loom, the combination with a thread patter said elements bein slightly yieldin to act upon the thread of the filling supgl In testimony w ereof we have ereunto I to be abandoned, of two relatively mova e aflixed our signatures.

elements each mounted on one part of the thread porter, one having a flat surface and ARTHUR C. VARNUM.

' the other a freely movable part thereon for 7 JAMES ERNEST BIRDSALL.

Images