US1795744A - Mat-up-removing mechanism for looms - Google Patents

Description

March-10,1931. F.W.SVVEARINGTON 1,795,744

MAT UP REMOVING MECHANISM FOR LOOMS .Filed Dec. 2-5, 1929 '1 mmmu f lnvenTor.

, Patented Mar. 10, I 1931 1 ii-"En s'ra as PATENT FFICE FRANK w. SWEARING'ION, OF, ennnnsizono, NORTH cnsomnn, Assrenoa 'ronnaraa CORPORATION, or HOPEDALE, Massnonnsnrrs, A CORPORATION or MAINE MA'r-UP-nnivrovrne Mnorrnnrsir non Looms Application filed December This invention relates to means for prerenting or removing a matted up condition of the warps in a loom as they pass to the ban nc'sses. or shed forming mechanism. Fre- -quently the warps in a loom become over lapped, bunched or crossed or. otherwiseout of parallelism due to various conditions. Some of the warps may be stucktogether in such a matted condition by reason of the starchor sizing with which theyv have been treated. Some of the warps may be interlocked in the matted condition by reason of the fibres protruding therefrom or. knots therein. But in any event, if the" warps are not-in parallelism and at any point are thus matted together, such a condition must be prevented or removedbefore the warps pass through the heddles or the shedforming' IDGZLDS.

The present invention has for-its object to provide a simple, efiicient andipracticat means for eliminating this matted condition ofthe warps. V l I [The invention has for its further object to provide a comb extending transversely of the loom and mounted to swing from a position beneath the shed upward and rearward through the shed 'toseparat'e' any matted warps.

The invention has for its furtherobject to provide such a comb with means for intermit "tently swinging it from andito its position beneath theshed and preferably with the upward and rearward swinging movement taking place during the closing of the shed when the warps are undera lessened tension. These an d other objects and features of the invention will appear more fully from the accompanying description and drawings and to will be particularly pointed outin the claims. L

In the drawings: Fig; 1' is a view in side elevation and in vertical cross section looking toward the in-' side of the side frame of an ordinary type 5 of loom, together with a preferred form of the invention embodied therein. v V Fig. 2 is a plan view partially broken away 1 of the comb construction shown in Fig. 1;

The invention obviously may be embodied in various types of loomsfi d' 23, 1929. Serial No. 415,882.

the type of loom herein illustrated is simply for the purpose of exemplifying the use of a simple and preferred form of the present invention.

" The loom illustrated is shown as compris-. ing side frames 1, a main'crank shaft 2 conthe cloth wind-up roll 12. The usual cam;

shaft 13 is shown and this cam shaft, according to the common practice, by mechanism not necessary to illustrate, is assumed to have one rotation for each two ro main or crank shaft 2.

The comb in which the present invention is shown as embodied comprisesa back shown as a shaft 14 journalled in the side frames '1 andextending transversely of the loom be-- tations of the neath'the shed and in. the rear of the shed I nected in the usual manner to operate the .lay swords 3 1onrnalled at .l and supporting fornn'ng mechanism or harnesses 9. In this shaft is set a. plurality of teeth 15.

These teeth should be made of thin metal blades or wire of substantial rigidity and closely spaced so that as many teeth as possible may beemployedand still. allow them to pass readily through the sheet of warps.

These teeth arev preferably. of SLi'fl'lCiQDi? length to extend from the shaft 1a entirely. through the shed when the shed is open and the comb is in a vertical position. Theseteeth also have the end faces 16 which face the shed rounded oil", as shown in F 1, so that they will not catch on the warps. as the combswings through the shed. I

Means i are provided for intermittently swinging the comb upward'and rearward through the, shed from a position such as shown in full lines in Fig. lwhere the comb stands beneath the shed to a position such as shown in dotted lines. Thus as the comb swings upward and rearwarchthe rounded end faces enable the teeth to pass in between 7 and ,separate the warps; Preferably. this swinging movement takes place during the ice ' the shaft 14 of the comb.

secured'thereto a ratchet wheel 19.

during that portion or closing ol the shed so that the main engagement of the comb with. the warps is taking place when the warps are under a lessened tension. Prefiarably riis upward and rearwnrd swinging movement takes place throughout its major extent when the shed is practicall l closeu and when the warps are in the position indicated by the dotted line in. Fig. .L

The comb therefore acts by this upward rezirwz d swinging movement to separate the warps and remove the matted up condition. T he gentle, even action of the comb will usually accomplish this without breakage Oi the warps, but it the matted condition is so serious as to result in the breakage of the warps, the detector mechanism will act to stop the loom and thus enable the condition to he removed by hand before the warps pass into the heddles.

A. simple and elleccive means for thus swinging the comb so ur ranged as to give the upward and rearw "l swinging movement dnrn (I it single pick and during that portion oi: l'l pick or cycle of the loom when the shed moving to closed posit-i on is also illustrated. For this purpose a spiral-like cam 17 is journalled at 18 in the loom frame-rearward of the cum shaft 13. This cam has The cam shaft 13 is provided with an eccentric 20 operating eccentric strap 21 on which is pivolally mounted-a pawl .22 cooperating with the ratchet wheel 19. A follower lever 23 is pivoted at 24 to the loom frame and carr es at its free end. a follower roll 25 ridingon the periphery of the cam 17. This -follower is held in Contact with the'cam by n suitablespring 26 connecting it to the loom frame. A link 2? is pivotally'.connectedat its lower end to the follower lever 23 and at its upper end roan arm 28 projecting from The cam 17 at the portion 29 of its periphery drops suddenly from the high part to the low-part ot the can and the timing and arrangement is such that the follower rides down this portion 29 a pick when the shed is moving to its closed position and thus acts to swing the comb urnvard and rearward from the'position shown in full lines t the position shown in dotted lines in F. l. The return movement of the comb to its position beneath the shed takes-place gradually during the remainder of the rotation of the cam 17 and may'occupy a period of several picks.

Thereis thus presented avery simple and effective means intermittently but continually acting upon'the warp-sheet to prevent or remove a matted up condition of the warps before they enter the shed-forming mechanism and such a construction may not only be embodied in new looms but readilyapplied to existing looms.

anism, a comb extending transversely of the loom in the rear of the shed forming mechanism and mounted to swing from aposition beneath. the shed upward and rearward through the shed to separate matted warps, and means for intermittently swinging the comb from and to the said position during the Weaving operation with the upward and rearward swinging movements taking place during the closingofthe shed when the warps are under a lessened tension.

2 A loom comprising-shed forming mech :mism,-a comb extendingtransversely of the loom inthe rear of the shed forming mecha uism and mounted to swing from a position. beneath. the shed upward and rearward through the shed to separate mattedwarps, and means "for intermittently swinging the comb from and to the saidpositiou during the weaving operation with the upward and rearward swingingmovements taking place duringthe closingofsthe shed when the warps are under a lessened tension and withthe return movement ofthe comb takingplace duringa plurality of picks.

3. A loomcomprising shed forming mechanism, a comb. extending transversely of the loom mtherear ofthe shed forming mechamsmand mounted to swing from apositlon beneath the shed upward and rearward :throughthe. shed to separate matted'warps, a

cam ourna-lledin the loom frame, means for rotating the-cam during the weaving operation, and a connection to the comb operated .bythe cam acting to swing? the comb intermittently from and to the sald position during the weaving operation. 7

V 4;. A loom;,comprising the construction defined in claim 3 m which the means for rotating the said cam comprises a ratchet secured .to. the cam, the usual cam shaft in the loom,

and a. pawl operated from the said cam shaft and cooperating-with the ratchetto rotate the

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