US2964066A - Steel wire heald - Google Patents

Description

Dec. 13, 1960 P. RAMSEIER swam. WIRE HEALD Filed April 14, 1959 llpll United States Patent STEEL WIRE HEALD Paul Ramseier, Pfaflikon, Switzerland, assignor to Bracker A.G., Zurich, Switzerland, a Swiss firm Filed Apr. 14, 1959, Ser. No. 806,283

Claims priority, application Germany Apr. 15, 1958 Claims. (Cl. 139-95) The present invention relates to a steel wire heald with a double wire whose ends are firmly soldered into slots in end-eye plates.

In known weaving healds of this kind, the end-eye plates are soldered to the ends of the wire in such a way that, in a first Working step, the double wire is firmly clamped in a slot stamped out of the end-eye plate to the width of the double wire and, in a second working step, the end-eye plate is soldered to the weaving heald. It is then very difficult to have the width of the slot so in accord with the width of the double wire that, during the transport to the soldering appliance and during the soldering itself, the end-eye plates remain .so firmly clamped that they do not inadvertently fall from the double wire. The secure clamping-on of the end-eye plates is also difiicult to obtain, since the double wire can only be pressed into the slot of the end-eye plate with quite a light pressing of wire against wire. In fact, if the clamping pressure is only a little too heavy, the double Wire will twist out of shape and spring out of the slot of the end-eye plate. That may even happen during the soldering-on of the plate, and just at the moment when the tin starts flowing between the wires to be soldered to each other. In order to be always sure that the width of the slot is in agreement with the wire thickness in question, one has hitherto been compelled to combine the stamping-out of the plate with the making of the heald, and thus the manufacture became very complicated.

The steel wire heald according to the invention allows these difficulties to be avoided in the case of the hitherto usual manufacture of steel wire healds with double wire and soldered-on end-eye plates, in that the end-eye plates each have two slots of a width corresponding at least approximately to the diameter of a single wire, and the ends of the two wires of the double wire are each separately soldered in one of these slots.

By pressing-in and, if necessary, an additional crimping or upsetting of the heald wire or of the eye plate, it is possible to obtain between the end-eye plate and the heald wire a clamping action hitherto never attained, without making particularly severe demands on the tolerance of the width of the slot and without having to tear that the heald wires may spring out of the end-eye plate before or during the soldering. Since any difierences between slot width and wire thickness can be equalized by upsetting or the like when clamping the single wire, there is also the advantage that the end-eye plates can be stamped with slots for the single wire independent of the finishing of the heald, thus obtaining an essential simplification of the heald making machine.

The method for making the steel wire heald also is an object of the invention, and according to this method a metal strip is provided at uniform intervals with apertures for passing stringing rails through and with a pair of slots each having a width equal to the diameter of a single wire of the double wire, after which the two ends of "ice I the wires of the double wire are brought separately into the slots; then the strip is cut through transversely between each aperture and me following pair of slots, and the wire ends are firmly soldered into the slots of the endeye plate thus formed.

Because the end-eye plates are only preliminarily stamped from strip metal, automatic delivery of the end plates when making the heald can be carried out with great certainty and very simply, it being possible to roll this preliminarily stamped strip up and to insert this roll into a magazine of the heald making machine. It is then a very simple matter for the end-eye plates to be separated from the strip one after the other by transverse stamping or cutting of the strip after the end-eye plate has been brought together and clamped with the double wire of the weaving heald.

In the accompanying drawing, wherein several embodiments of the invention are illustrated:

Fig. 1 is a side elevational view of a finished steel wire heald provided with end-eye plates,

Fig. 2 is a side elevational view, on a larger scale, of an end-eye plate with clamped-on double wire of the weaving heald according to Fig. 1,

Fig. 3 a cross-section on the line A-B in Fig. 1,

Fig. 4 a cross-section on the line CD in Fig. 1,

Figs. 5 and 6 are views similar to that of Fig. 2, but showing further embodiments of the invention, and

Fig. 7 shows a metal strip from which pieces are to be stamped out to make end-eye plates in accordance with the invention.

The steel wire heald according to Figs. 1 to 4 has a heald double wire 1 and opposite end-eye plates 2. The end-eye plates 2 are each provided with an aperture 3 for passing-through a stringing rail 4 for the healds. Further, at one end of the plate 2 a pair of slots 5 is provided, with the width of each slot being approximately equal to the diameter of a single heald-wire 1 and with each end 1' of the double wire being held in a related one of the slots 5.

The two slots 5 communicate, at their open ends, with a common slot 6 having a width which is twice as great as the heald-wire diameter and receiving the solderedtogether portion of double wire 1 immediately adjacent to the free single ends 1 of the wire 1. The ends 1 pass either so exactly into the slots 5, that when the ends 1' are pressed into the slots the end-eye plate 2 holds these ends firmly by clamping, or the ends 1' or the plates 2 are upset or crimped in such a way that this clamping occurs. The ends 1' are then soldered into the slots 5 in a manner not shown. The clamping is therefore of particular importance, since the end-eye plate does not fall away from the wire during transport to the soldering place and during the soldering itself.

As can be seen from the modifications of the end-eye plate according to Figs. 5 and 6, respectively, the aperture 3 for the stringing rail may also be open at one side. The slots 5 according to Fig. 1 to 4 run parallel to each other, while the slots 5' according to Fig. 5 converge towards their free ends. According to Fig. 6, the slots 5" have arcuate free end portions leading into the common slot 6.

For making the described weaving heald, apertures 3 and slots 5 and 6 are stamped-out at certain distances apart in a metal strip 7 (Fig. 7), whose thickness corresponds at least approximately to the diameter of a single heald-wire.

By stamping a transverse strip 8 from the strip 7, the latter is cut through transversely in such a way that the slots 6 are open at the end remote from the pairs of slots 5. The two single wires 1 of the double wire of the heald are now inserted with the ends 1' into the slots 5 and firmly clamped. By stamping-out another transverse strip 8, the end-eye plate 2 seated on the wires 1 is cut from the strip 7 and can be delivered to a soldering device for soldering the wires 1 into the slots 5. The described operation is repeated for the next weaving heald to be made, it being possible to carry out 'the several working operations automatically one after the other in the same machine.

What -I claim is:

l. A steel wire heald comprising a double wire, and end-eye plates at the opposite ends of said double wire, each of said end-eye plates having two slots of a width corresponding at least approximately to the diameter of a single wire and the ends of the two wires of said double wire being each separately soldered in one of said slots of the adjacent end-eye plate.

2. A steel wire heald as claimed in claim 1; wherein said slots at their open ends communicate with a single common slot in which the wires of the double wire lie alongside each other.

3. A method for making a steel Wire heald comprising the steps of forming a metal strip at regular intervals with apertures through which stringing rails can be passed, and with a pair of slots, inserting into each pair of slots the ends of the wires of a double Wire each having a diameter equal to the width 'of the related slot, cutting the strip transversely between each aperture and the following pair of slots, and firmly soldering the wire ends in the slots of each end-eye plate thus formed.

4. A method as claimed in claim 3; wherein the wire ends are firmly clamped in the slots before the cutting of the strip and before the soldering of the wire ends in the slots.

5. A method as claimed in claim 4; wherein said endeye plates are crimped at least in the region of the slots in order to clamp the wire ends "firmly in the slots.

6. A method as claimed in claim 4; wherein the wire ends are crimped in order to clamp the wire ends firmly in the slots.

7. A method as claimed in claim 3; wherein each pair of slots communicates with a common relatively wide slot and, when cutting the strip through for separating the individual end-eye plates after the wire ends have been inserted into the slots, a transverse portion is stamped out of the strip in such a manner as to open each relatively wide slot at the end remote from the related pair of slots.

8. A steel wire heald comprising a double wire, and elongated end-eye plates at the opposite ends of said double wire, each-of said end-eye plates having a relatively wide slot opening at an end edge of the plate and having a Width equal to-the combined diameters of the two Wires of said double wire and receiving the latter, and two slots branching from said relatively wide slot and each having a width corresponding at least approximately to the diameter of one of said two wires, the ends of said two wires of the double wire being separately soldered in said two slots of the adjacent end-eye plate.

9. A steel wire heald as in claim 8; wherein each endeye plate has parts thereof crimped at said two slots of the plate to clamp said ends of the wires in said two slots.

10. A steel wire healdas in claim 8; wherein said ends of the wires have crimped parts in said two slots of the related end-eye plate in order to clamp said ends of the wires in the slots.

References Cited in the file of this patent UNITED STATES PATENTS

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