US1697898A - Loom - Google Patents

Description

E. F. BALDWIN Jan. 8, 1929.

LOOM

Original Filed Feb. 18, 1925 2 Sheets-Sheet inve,

Jan. 8, 1929.

E. F. BALDWIN LOOM Original Filed Feb. 18, 1925 2 Sheets-Sheet Mmm w 2 www NS H f Patented Jan. 8, 1929. f

UNITE testare EARL n. BALDWIN, or GARDNER, MASSACHUSETTS, AssieNoR To AMERTCAN FIBRE CORPORATION, or GARDNER, MASSACHUSETTS, A .CoRroRATroN or MASSACHU- i SETTS.

LOOM.

Original application filed February 18, 1925, Serial No. 9,958. Divided and this application led May 2.8,

19a?. serial No. 194,870. l

This invention relates to looms; more particularly to looms for weaving relatively heavy stiff strand material7 such, for example, as may be made from strips ofV paper formed into cord or twine7 this application covering subject matter divided out from my application Serial No. 9,958 filed February 18, 1925 for looms and relating more particularly to means for cutting Cif the picks and holding them in proper position in the fabric.; For a more complete understanding of this invention reference may be had t'o the accompanyingdrawings in which Figure 1 is a righty end elevation of the loom. f

Figure 2 is a detail in perspective showing means for holding one end of the pick in the fabric.

Figure 3 is a transverse section parallel to Figure 1 through an intermediate portion of the loom.

Referring to these figures, each warp strand passes about a tension device indicated generally at A, through a shedding mechanism indicated at B, and through a filling laying mechanism at C, where the filling strands are woven to form with the warp strands the desired fabric. VThe detail constructions of these various mechanisms is fully described in the parent application hereinbefore referred to and will not be described herein, except in so far as it may be necessary or desirable to afford a clearer understanding of the subject matter herein presented and claimed.

The shredding mechanism comprises the harness frames 40 and 41 which are moved up and down by eccentric straps 4S on eccentrics xed to the shaft 49. Preferably the harness frames are arranged in two pairs positioned end to end and moved out of time with each other, as disclosed in the parent application hereinbefore referred to, to produce progressive shedding between the center and sides of the fabric.

A lling laying mechanism C comprises a lay having a reed 61' extending thereacross at its upper end. Fixed to the reedr is a pair of slotted plates shaped to detine with the reed a substantially channelshaped guide-way 67 for the passage'of a pick-laying member carrying Va suitable vstrand gripping device extending outwardly between the adjacent edges of the plates 65.

After each pick strand has been laid the lay is given a. forward motion in order that 121 carries a cam follower 122 which enn gages a cam slot 123 in a cam member 124C which may be fixedy to one face of a gear 125. In order to hold the cam followers 122 1n proper position relative to the cams, the rear ends of the links 121 are suspended on link hangers 135, each of which is pivote'd as on a stub shaft 136 projecting from onev face of a ybracket 137 fixed to the machine. The shaft 49 actuating'the harness frames is also driven from ther shaft127 as by intermeshing gears 140 and 141 ixed on these respective shafts. As shown each of the gears 125 is fixed to a shaft and mesheswith a gear 126 carried by a mainshaft 127 extending across the machine. As shown best in Figure '1, one end of the shaft 127' may havefixed thereon a worm wheel 128A with which engages va worm 129 carried by a jack shaft 130. rThis jackshaft may be coupled, as by means of a sliding clutch-131,

to the shaft 132 of a driving motor 133.y The forward movement of the lay, it is cut o' n at the side of the fabric from which it was drawn in. v,This cutting mechanism comprises a pair of blades andg166. The blade 165 is mounted in fixed position while the blade 166 is pivoted at 167 thereto. i This blade 166 has extending from its lower portion ,a finger 168 which is positioned in the path of movement of the link 121 in such a manner that as the lay moves forwardly at each beating up motion it strikes the finger -168 and rocks the blade 166 down- 'wardly7 bringing itsl cuttingedge y169 into shearing relation with an edge 170 A0f the fixed blade between which the filling strand is carried as the layV moves forwardly.

When theblade 166 is in closed position with the blade 165, the strand has been engaged therebetween and cut olf on the side of the fabric from which it was drawn into the shed. A spring 171 extending from a lug 17 2 at the forward end of the movable blade 166 and hooked into a lug 173 carried by a fixed frame member acts to hold the pivoted blade normally out of operative relation until it is forced into its cutting positionV rthe last laid pick afterithas been beaten up into position, this pick being indicated at This hook is pivoted at 182 to a fixed portion of the machine and is provided with' a laterally extending pin 183. VExtending forwardly from the lay in yalinement with this hook 180, as best shown in Figure 1,

is acam element 184 having` `aicam block 185. This block when the lay isin its forward position rides beneath the pin 183 of the hook and raises it7 causing the hook to rock about itsy pivot 182, thus raising its extremity 181 from back of the strand Zz so as topermit a succeeding pick which is being beaten up in this forward motion of the lay to bey placed in position to' be engaged by thel extremity 181 when the retraction of the lay permits this end to fall by its own weight into position back of the pick.

A shown in Figure 2, one or more fabric strands c are used as the extreme warp strands from which the fabric 1s made and the hook is positioned to engage the pick between this marginal warp or warps and those in the main body of the fabric. These marginal strand or strands are used to effect a tying 'of the ends of the picks inV position these'warp strands holding morer tightly tothe picks than. do the warp strands of paper from which the body of the fabric is formed. Y

Having thus described an embodiment of this invention, it should be evident to those skilled in the art that various changes and modifications might be made therein without departing from its spirit or scope as de fined by theappended claims. K f

I claim:

1. In combination with reed7 means for laying individual picks of strand material, and means for moving said reed to beat up each pick as laid, of a member normally biasedto engage the last pick adjacent to one end after each beating 'operation to retain said end from unraveling, and means actuated by the movement of said reed at each beating movement for removing said member to permit a succeeding pick beaten up to be presented in position to be engaged thereby.

2. In combinationv with a reed, meansfor l'laying individual picks, and means for moving said reed tobeat up the picks, of av hook normally biased to engage back of each pick adjacent to one end after it has been beaten up andserving to prevent unraveling thereof, andan element movable with said reedV and engaging and removing said hook from its biased position duringthe beating movement, to permit a succeeding pick to'- be brought into position to be engaged by said hook.

In testimony whereof I havealiixed my signature.`

" f EARL F. BALDVIN.

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