US1523100A - Pile-wire cutter for looms - Google Patents

Description

Jan. 13, 1925.

M. B. BEHRMAN PILE WIRE CUTTER FOR LOOMS Filed June' e, 1923 w m 1.5 an .m\ 3 .mY M

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Patented Jan. 13, i925.

inane MARCUS B. BEER-MAN, 0F BROOKLYN, NEW* YORK, ASSGNOR TO THE LOX SEAL COR- PORATION, OF NORTH BERGEN, NEN JERSEY, A CORPORATION OF NEW JERSEY.

PILE-XVIRE CUTTER FOR LOOMS.

\ Application tiled June 6,

To whom t may concern.'

Be it known that I, MARCUS B. Bnl-Imran, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Pile- VVire Cutters for Looms, of which the following is Va specification.

The invention relates to the class of looms adapted for weaving pile fabrics, andit consists in a novel construction of the pile wires employed in such looms for cutting the pile, it being commonly known that the wires are made use of in a group and are successively inserted into and withdrawn from the shed of the fabric. Each wire carries at one of its ends a blade or cutter, which when drawn through the pile loops or floats formed from the warp threads, Severs or cuts the same to form the pile.

The wires of my invention are applicable to existing looms, and hence my invention, while relating to looms, consists primarily in the wires operating in a customary manner and by the usual means, but possessing novelty in respect to that portion thereof directly carrying the blade for cutting the pile.

In accordance with my invention the pile wire is specially constructed at its forward end to form a holder adapted to detachably receive and securely hold a small flat steel blade or cutter, and said blade or cutter is of special construction adapting it to said holder and to cooperate with the blade-securing features thereof.

One of the objects'of my invention is to provide eiicientblade holding means which will permit the convenient insertion of the blade into the holder therefor and the convenient removal of the blade therefrom, the blade while in operation being elfeetually and firmly held.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which:

Fig. 1 is a side elevation, partly broken away, of a pile wire constructed in accordance with and embodying my invention, the blade or cutter being shown in its operative position within the holder formed in the forward end of said pile wire;

Fig. 2 is a centralvertical longitudinal section, partly broken away, through the 1923. Serial No. 643,633.

forward portion of the pile wire and illustrates the blade or cutter in side elevation and in the initial position to which it is applied in the holder and before being slid, toward the left looking at Fig. 2, for the purpose of tightening the blade and locking the same within the holder, Fig. 2 being on an enlarged scale for clearness of illustra.- tion;

Fig. 3 is a corresponding view of the same showing the blade as having been moved to its operative position from the position in which the blade is shown in Fig. 2;

Fig. 4 is a top edge view of the same, the blade being shown in its operative position, and

Fig. 5 is a vertical section through the same taken on the dotted line 5-5 of Fig. 3, and being on an enlarged scale.

in the drawings 10 designates a pile wire and pile cutter embodying at its forward end, that heilig the left hand end looking at the drawings, the features of my invention, the other portion of the wire being of usual or any suitable form and construction. The pile wire is a reasonably thin strip or bar of steel and somewhat longer than the width of the fabric to be woven, and the method of employing the pile wires in a loom weaving pile fabrics is too well-known to require description herein. I have only shown one pile wire 10 in the drawings, but it is well-known that the pile wires are used in groups and that all the wires of a group are alike.

0n the forward end of the wire 10 is a holder 11 for the blade or cutter 12, said holder being of sheet steel and the blank therefor being bent or folded into approximately U-shape in cross-section and said holder receiving at one end and being brazed to the adjacent end of the rod 13 of the wire.

The holder 11 is of special construction and between its side members 14, 15 is formed a long narrow recess or socket 16 to receive the base portion of the blade or cutter 12, the edge of the base of the blade being straight and seated against the upper surface of the flat bottom l( of the recess or socket 16. The recess or socket 16 for the blade or cutter is of special construction in that the side members 14, 15 gradually converge toward the forward end of the wire, as shown more clearly in 4f, thereby imtroduction of the blade into fthe holder, as shownin Fig. 2, preparatory to said blade being moved to its operative position shown in Figs. 1, 3 'and 41. The side members 141, 15of the holder are, near their outer ends, of considerable height, as shown, so as to engagerthe opposite sides of a substantial portion of the .shank end of the blade 12, s shown in Fig/3, and from this wider portion of the members 14, 15 of the holder, said members incline downwardly toward the right, 'as at 18, 18', to the uppeiI edge of the holder, and at the base of said inclined portions, afinger or cross-bar 19 extends across the upper edge of the recess or socket 1G, said finger or cross-bar inthe present instance being v,formed integrally with the side member 111 and bent vacross the upper edge of the recess or socket 16 and having its free end against'the upper edge of the side member 15. The forward ends of the side members 14, 15 are brought together and curved laterally to provide the customary guard 20. The aforesaid edge 1S vis concaved so as to expose the adjacent opposite portion of the side member y15 and thereby facilitate the filial manual positioning ofV the blade.

The blade 12 has an inclined cutting edge 21, a straight lower edge to engage the bottom 17,01 the recess v16 of the holder, a straight'upper edge 22, an outer or shank edge 23, an inclined edge 24 which extends from the edge 23 to the edge 22, and an outwardly projecting longitudinal tongue 9 which 'extends outwardly beyond the outer edge 23 of the blade orfcutter and is wholly confined within the recess loof the holder. The blade or cutter is formed with alongitudinal slot 25 which extends inwardly from the shank end of the blade, and'this slot has a horizontal upper edge extending inwardly from the lower end of the outer or shank edge vd3 and an inclined lower edge entending inwardly from along the upper edge ofthe tongue 9. The slot 251is positioned to slide upon the cross-bar 19 when the blade is firstlintroduced into the holder 11 (Fig. v2) and then moved to the left therein YorA to the position shown in Figs. 1 and 3. Gn sliding the blade or cutter to its operatiye position shown in Fig. 3, the inner closedfend of the slot 25 is preferably not permitted to reach the edge of the cross-bar 19, and the lower edge of said slot is so disposed that itwill wedge againstA the crossbar before said closed end of the slot reaches said cross-bar, as 1 indicate in Fig. 3. That portion of the blade or-cntter below the slot 25 constitutes in effect an inward continuation of the tongue 9 and may be so regarded,

and tliistongue having a downwardly and Y i ;v Y tongue becomes assuredlyeffectlve, and Vin addition .this arrangement and construction assures the proper A,securing` of the blade or cutter 12 even though wear mayhave taken place on the lower surface of said cross-bar. Y

The repeated insertion and withdrawal Vof blades or cutters 12 from the holder 14 and the pressure exerted againstV the lower surface of the crossfbar 19 bythe lower edge of the slot 25`naturallyresults in wear taking place at said surface of said Vcross-bar and hence the holder mayfha'veav longer lifeV when the slot 25 is so disposed with'respect to the cross-bar that the closedrend of the slot does not reach the edge of said bar until after the blade has been in use a consider-V able length'of time and may be discarded for a` new blade. A i' 1 also preferably form a hole'8 in the blade 12 to receive a hook or tool not shown, by which after the bladehas been introduced into thefholderin the position shown in Fig. 2, pressure may be vconveniently applied to the bladeat the hole 8, to slideV the blade outwardlvfand wedge the tongue 9 between Ithe sides of the outer end of the holder and wedge the lower edge of the Vslot 25 against the cross-bar 19. L

1n assembling the bladeor cutter 12with the holder 11 the blade'is introduced downwardly into theholder andbetween thev side members 14, 15 thereof at the right of the cross-bar 19, as I illustrate in Fig. 2, the holder snugly though freely receiving the blade, andthereupon the blade is drawir forwardly by means'of a pair of pliers or other suitable tool so as to carry the slot 25 along the cross-bar 19 until said `barris at the inner portion of'said slot or .intheV position shown in Figs. 1 and V3, and this movement of the blade or cutter 12V results Y Vverging sides of the for-'ward portions of the said side members 14. 15 and in the upper edge of the tongue wedging against the cross-bar 19 The blade or cutter 12 thus becomes very firmly held within the holder 11, being prevented during use from riding upwardly from the holder and being well adapted to resist any strains which may be exerted against its cutting edge 21 during the use of the wire in a loom. l regard the wedging of the shank portion of the blade between the sides of the holder and the wedging of the lower wall of the slot 25 against the cross-bar 19, as very important in maintaining the blade in rigid operative position for use.

It is to be noted that the opposite sides of the holder are, in accordance with my invention, left integral and smooth and that the `forward ends of the side members 14, 15 gradually approach each other and are deflected to form the guard 20 which, being of double-thickness, possesses strength and durability. The converging forward portions of the side members 14, 15 not only produce the wedge recess or socket for the bla de, but present smooth unbroken surfaces which ensure the convenient use of the wire in a loom.

.The blade may be removed from the holder by drawing the same from over the cross-bar 19 and out of the wedge-shaped forward 4end of the recess or socket 16 and into the wider portion of said socket or recess, to the introductory position of the blade shown in Fig. 2, the blade when in that position being capable of being conveniently lifted from the holder.

Wherever in the claims reference is made to the engagement between the inclined surface on the blade and the member 19 as being of a character that the blade will be held in position against removal, by such engagement, it is intended to set forth that such engagement by itself will hold the blade in position. It is not, however, intended that the reference shall be construed as excluding from the scope of the claims the employment therewith of additional means for still further supplementing or assisting in the holding of the blade in position.

I do not confine my invention to the shape of the holder 11 and blade or cutter 12 shown and described, since these details may be changed or modified within the scope of the appended claims. The more essential features of the invention reside in the holder having the longitudinal recess 16 and cross-bar 19 and in the blade or cutter l2 adapted to said recess and having the longitudinal slot or cut-out 25 to slide upon and bec-ome wedged at one edge against said cross-bar, thereby securing the blade or cutter; the wedging of the blade or cutter against the cross-bar being ntensified by the resistance of the pile-loops to the cutting edge of the blade when the pile-wire is in operation. It is also desirable that a portion of the outer end of the blade engage the deflected outer end portion of the holder beyond the cross-bar 19,

lVhat l claim as my invention and desire to secure by Letters Patent, is

1. For use in looms for weaving pile fabrics, a pile wire having a seat for a knife blade and an abutment in spaced relation to said seat, and a blade provided with an inclined surface and arranged to be positioned between said seat and abutment with said inclined surface in contact with one of them, the incline of the blade being such that when the blade is moved longitudinally of the pile wire into position between the seat and the abutment member, with the inclined surface of the blade in engagement with the abutment, a gripping engagement between the blade and the pile wire will result, which will be of such a character that the blade will be held in position against. removal by such engagement.

2. For use in looms for weaving pile fabrics, a pile wire having a seat for a knife blade and. an abutment member spaced from said seat and extending thereacross, and a blade having a wedge-shaped portion thereon, said wedge-shaped portion being arranged and adapted to be moved along the seat into position between the seat and abutment with the inclined part of the wedgeshaped portion in engagement with one of them and the incline of the inclined part of the wedge-shaped portion being such that as the blade is moved longitudinally of the pile wire, a wedging engagement between the wedge-shaped portion of the blade and the seat and abutment member will be attained and the blade will be held against removal by such engagement.

3. For use in looms for weaving pile fabrics, a pile wire having a seat for a knife blade and an abutment in spaced relation to said seat, and a. blade arranged to be positioned between said seat and abutment member with the three in contact, and means for securing a gripping engagement therebetween including an inclined portion on one of said three, the inclined portion being of such a character and being so arranged that as the blade is moved along the seat toward the free extremity of the pile wire, a gripping engagement with said inclined portion will result, which gripping engagement will be of a character to hold the blade in position against accidental removal.

1. For use as an attachment to a pile wire having a seat thereon and an abutment member spaced therefrom, a blade provided with an inclined surface of such a character that when said knife is positioned between the seat and abutment member with aan the ifnclined surface in engagement with one of them when the knife is moved toward the free extremity of thepile wire, a gripping engagement between the seat, abutment and knife will result and the knife will be held therebypin position. i

For use as an attachment to a pile wire having a seat thereon and an abutment member spaced from said seat, a blade having a combined guiding and wedging portion thereon arranged and adapted when moved longitudinally between the seat and abutment member on a pile wire to produce an increasing gripping engagement therebetween which engagement will hold the blade in position against accidental removal. Y

6. For use in looms for weaving pile fabries, a pile wire having on one end a holder provided with a recess, and Va c ross bar crossing said recess above the bottom there of; and a blade seated in said recess with its cutting edge exposed above the same, said blade having a lower edge to engage the bottom of the holder and an upper edge inclined downwardly and outwardly to wedge against said cross bar, said incline being of such a character that when the blade is moved along the recess toward the free extremity of the pile wire, an increasing gripping engagement .will result, which engagement will hold the blade in position against removal.

7. For use in looms for weaving pile-fabries, a pile wire having on one end a holder which is approximately of U-sliape in crosssection and has a bottom and side members forming a blade-receiving recess, said holder also having a cross-bar crossing said recess,

and a blade seated onA edge in said recess with its cuttingedge exposed above the same,

said blade having a lowerj edge to engage the bottoni of the holder anda longitudinal slot extending inwardly from its outer or shank end to pass upon said crossbar, the.,

lower edgeof the slot being inclined downwardly and outwardly tof wedge against said cross-bar, said holder at its outer end portion being deiiected laterally and said blade at its outer end portion engaging said portion of the holder. Y

8. For use inloorns Y` for weaving pilefabrics, a pile wire-,having on one-end aV wardly and Aoutwardly inclined Lipper edge to wedge against said barythe side memL bers of the holder inwardly from said crossbar being substantially Vparallel and spaced apart to freely receive the bladaon edge and said members outwardly fromv said cross-,bar being converged to thereat taper said recess and adaptthe same to receive and hold a portion of the blade with a. lirm wedging action. U

Signed at Brooklyn, in the county Aof Kings and` State of New York,V this 31st day of May, A. D. 1923. .Y

MARCUS B. BEHRMAN.

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