US2784742A - Jump and trap wire - Google Patents

Description

March 12, 1957 F. w. E. HoEsr-:LBARTH 2,784,742

' JUMP AND TRAP WIRE Filed Sept. 13, 1955 BY i l l ATTORNEYS.

United States Patent O JUMP AND TRAP WIRE Frank W. E. Hoeselbarth, Carlisle, Pa., assignor to C. H. Masland & Sons, Carlisle, Pa., a corporation of Penn- Sylvania Application September 13, 1955, Serial No. 534,093

4 Claims. A (Cl. 139--44) The present invention relates to transverse pile wires for weaving pile fabrics such as carpets, rugs and the like.

A purpose of the invention is to permit selective cutting or non-cutting of pile projections of different span length.

A further purpose is to permit cutting of normal pile projections by a knife at the end of the wire remote from the head, and passing lloat pile projections without cutting.

`A further purpose is to provide a trap opening extending from a mouth in the upper portion of the wire in a rearwardly direction, locate a knife at the rearward end of the t-rap opening and suitably along the bottom, and provide a shield above lthe knife and extending over the rearward end of the mouth opening.

A further purpose is to locate the forward end of the shield above the top of the portion of the wire forward of the mouth of the trap opening.

A further purpose is to locate the forward end of the shield somewhat 'below the top of the portion of the wire forward of the mouth of the trap opening.

Further purposes appear in the specification and in the claims.

In the ydrawings l have chosen to illustrate a few only of the numerous embodiments in which my invention may appear, selecting the forms shown from the standpoints of convenience in illustration, satisfactory operation and clear demonstration of the principles involved.

Figure 1 is a fragmentary side elevation of a wire aclcording to the invention.

Figure 2 is a fragmentary top plan view of the wire of Figure 1.

Figure 3 is a view of Figure 1 Showing a modification.

Figure 4 is a warpwise conventional weave diagram showing a weave in which wires according to the inven- :tion are utilized.

Describing in illustration but not in limitation and referring to the drawings:

In the weaving `of carpets and rugs and other pile fabrics, it is conventional practice to provide wires which are in some cases cutting wires, since they have cutters at the ends remote from the head and in other cases are non-cutting wires without such cutters. Other wire var iations consist of the provision of raised portions or flags on non-cutting wires beyond the shed at the end remote from the head, and the provision of wavy or serrated portions on the tops of the wires in the shed.

It is not possible in ordinary weaving practice to selectively cut pile projections raised from a wire and where selective cutting is desired it has been the practice to introduce two wires, a cutting and a non-cutting wire, raising some of the ends over Ione of the wires and other ends over the other wire or over both wires. This procedure is tedious and expensive as it slows up the weaving operation.

rPhe present invention is designed to permit making cut and uncut pile projections in the same transverse row by providing a wire which will cut short `span pile projections such as normal pile projections, and, because of ICC their greater looseness, will leave longer span pile pro jections uncut. Thus high floats can be retained uncut, or, by suitable adjustment of the length of the trap and the position of the shield, long high floats can be left uncut and short high oats can be cut.

The wire of the invention can in all respects be a conventional transverse pile wire such as a straight wire, wavy wire, high wire, low wire, or the like, having a conventional head (not shown) to permit the pulling of the wire, with a special construction at the end remote from the head as shown.

Considering first the form of Figures 1 and 2, the wire body is pulled in the direction of the arrow 21 which extends toward the head. Near the end remote from the head the top portion curves downwardly at 22 to form a trap opening 23 which has a mouth Z4. The bottom of the trap opening flattens out and suitably curves upwardly at 25 and near the rear at 26 has a reverse curve. A portion of the wire above the t-rap opening now projects forwardly to form a shield 27 which terminates in a suitably blunted or curved forward shield projection 23 which forms the rear of the mouth opening. The shield in the form of Figures l and 2 has a horizontal top portion 30 and then bulges upwardly in a slight hump 3l, and then the entire wire curves olf at the rear end, rst gradually at 32 and then abruptly at 33.

The bottom of the trap opening has a slot 34 which receives a knife 35, suitably a razor blade having an edge 36 which projects rearwardly and upwardly and terminates in a converging saddle 37 at the rear `of the exposed portion of the knife Where any pile projections entering the trap which remain uncut to that point are nally cut.

In the form of Figure 3, the forward projection 28' of the shield 27 is lower than the top edge 38 of the portion of the wire within the shed, so that a pile warp end which is not to be cut, such as a float end, can drop somewhat at the mouth opening 24 and still pass over the shield remaining uncut. In the form of Figures l and 2, however, the forward end 28 of the shield is slightly above the `top edge 38 of the portion of the wire in the shed, so that if the pile projection drops perceptibly as it passes over the mouth opening it will be carried into the trap. The exact position at which the forward end 23 or 28' of the shield is located will determine the character of pile projection which will remain uncut. This position can if desired be made adjustable by bending the shield up or down, or in any other suitable manner.

It will be evident that the extent of the mouth opening 24 or 24' lengthwise of the wire will also control the tendency of the pile warp end to enter the trap or to pass over the trap and this can be suited to the particular weave. The mouth opening 24 is narrower than the mouth opening 24.

Figure 4 illustrates a suitable pile fabric in which wires 40 according to the invention raise a pile end 41 in normal pile passing up between two adjoining upper lefts 42, and a pile end 43 forms high floats 44 remaining up over, in this case, two adjoining upper wefts. Binder warp sets 45 and 46 hold together the upper wefts 42 and lower wefts 47. Stufer warps are provided at 48.

It will of course be understood that the iloats may be longer or shorter floats if -desired and they may if desired be intermediate floats in the sense that the pile warp ends remain up over one wire and then oat under the next wire or succeeding wires.

In operation, when for example, the wire 40 is withdrawn from the fabric, the relatively tight normal pile projections 41 will enter the trap and be cut by the 3 cutter as the wire is pulled while the oats 44 being relativelyy looser willescape the trap andfnot be cut.

In view of my invention and disclosure, variations and modifications to meet individual whim or particular need will donbtless`become evidentV to "others skilled-'in the artQt'o4 obtain all or part of the benefits of in'y'invention without copying the'structure shown, and VI', therefore, claim all suchV insofar'as they fall within the reasonable spirit and scope of my claims.

Having thus `described my invention, what I claim as new and desire to secure by Letters1 Patent is:

1. A transverse pile wire having a head at one end, and having at the end remote from the head a trap opening with a mouth at the top of the wire, a knife in the trap opening adapted to cut pile warp ends entering the trap opening, said wire having a shield above the knife extending from the rearward end of the mouth of the trap opening toward the rear of the wire.

2. A wire according to claim 1, in which the knife extends rearwardly and upwardly.

3. A wire according to claim l, in which the forward end of the shield rises above the top of the portion of the wire forward of the trap opening.

4. A wire according to claimv 1,` in which the forward end of the shield is below the level of the top of che portion of Vthe ywire vforward of theV trap opening'.`

References Cited in the lille of this patent UNITED STATES PATENTS 774,695 Price Nov. 8, 1904

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