US1429124A - Method of manufacturing cable beads or grommets - Google Patents

Description

F. H BEYEA.

METHOD OF MANUFACTURING CABLE BEADS 0R GROMMETS. APPLICATION FILED SEPT. 14.,. L921.

'1 ,4129, 1 24,, I Patented Sept. 12, 1922.

FRANK H. BEYEA,

METHOD OF MANUFACTURING OF AKRON, OHIU.

cases BEADS on csominn'rs.

Application filed September 14, 1921: Serial I I o. 500,651.

of this'article, over methods now in use.

In a prior application Serial No. 47 2,623 filed May 26, 1921, I have proposed to form the grommet from a circular central or core wire and an outer or covering wire distinct and separate therefrom. In the present application, however, I propose to use a single wirefor this purpose.

The method of my invention is illustrated by the drawings accompanying this application in which Fig. 1 is a viewshowing the single piece of wire from which the cir'- cular cable is'made.

Fig. 2 is a cross section on the line. 2-2 of Fig. 1. I

Fig. 3 is a side elevation of the bead cable or grommet in the process of manufacture.

Fig. 4- is a side elevation of the completed grommet.

Fig. 5 is a cross section on the line 5-.5 of Fig. 4.

The present application discloses a method of making a cable bead or grommet, which method is similar in some respects to the 'method disclosed in the prior application referred to above, in that the wire which composes the bead is given a preliminary spiralling or crimping before the wrapping operation. The advantages of preliminarily crimping or spiralling the wire before wrapping it about itself to form the core wire, are that when the spiralling is done as a. preliminary operation and not during or as a part of the winding or wrapping operation, a more accurate and perfect spiral may be iven to the wire and a higher carbon or sti or wire may be used for this purpose. Furthermore, the spiralling is done in a separate machine from the winding or wrapping machine. which simplifies the latter machine and reduces the liability of failures or disablement of the wrapping machine. Other objects and advantages will be apparent from the description of the invention.

In my prior application above referred to, I proposed to use a separate core wire as a foundation about which the outer or covering wire is wrapped. According to this invention however I propose to use the same wire as the core wire and cover it with a spiralled extension of itself.

Thus, in Fig. 1 the wire-is shown preformed with the spiral or straight portion and prepared for the-winding or wrapping operation. The wire is indicated as a wholeby the numeral 1 and is formed with a straight or unspiralled portion 2 and a. spiralled-or crimped portion 3. The straight portion2 is of the proper size to "form a complete core wire so that the ends of the strai ht portion will'come to-the point at whic the spiral begins, when the wire is bent around to form the core .or foundation of the proper size for the finished grommet. The remaining portion of the wire is given acrimp or spiral of the proper pitch and diameter so that when wound about the por-' tion 2, it will closely cover the same.

My present process differs from those which have preceded it, in that the Wire is given the spiral formation before it is assembled upon the carrier or spool or in the 'wrapping or winding machine. By Fig. 1, in which portions of the wire are broken, out, I have intended to show a length of wire sufficient to make a single complete bead core or grommet, it being understood that the length of wire which goes will comprise a large number of units.

The wire for the beads, having been prepared in the manner shown with a number of unit lengths, each composed of a straight portion 2 and a spiralled port on 3, iswound or assembled on a spool or carrier 4. The portion of the wire 2 is bent into the form of a circle with the end of the wire against the first spiral. The spool 4 is then passed in an orbit about the portion 2 so that the port on 3 will wrap about the straight portion of the Wire, the spool'and the ring of wire moving in the relative direction indicated by the arrow in Fig. 3. The wrapping operation is continued until the whole of the portion 2 of the wire is covered, which should run the wire out to the next succeeding straight portion. Thev Wire is then cut'as at 5 in Fig. 4 so as to leginto the machine v first run out and ister approximately with the first end of the wire, although it may overlap slightly, if desired. T he wire is then sealed or locked in place by any suitable means as shown at 6, which may represent a sleeve orclip or a soldered, brazed or welded joint. The wire cable is then stretched to bring it to the proper size and cause the spirals to lie together evenly and smoothly and is ready for incorporation in the bead structure.

In former practises it has been the custom to make wire beads by the use of a quill or die as apart of the head which revolved about the core wire to give the spiral formation to the wire during the wrapping. Such a practise has 'meant a setting of the machine in each' winding operation so that the wire will run out straight for a portion or a whole of the core wire, and then resetting to give the wire the spiral formation. By preparing or preforming the wire as shown and. described I am enabled to dispense with the setting and resetting operations and as a re-' sult the manufacturer of the beads may be done with less labor and greater efiiclency.

It will be noted that, as the wire is assembled upon the spool in crimped or spiralled form, it is necessary that the spool be-passed around the wire in such fashlon that the preformed spiral is not altered.

To do this the spool is maintained with its axis always perpendicular to the plane of the core. This method cf winding" is original with me and is covered generically in filly prior applications, Serial No. 472,623

filed May 26, 1921, and Serial No. 499,305 filed September 8, 1921.

Changes and modifications may be made in the carrying out of the process of my inventions without departing from the spirit thereof or sacrificing any of its benefits. The invention is not limited to the manufacture of endless bead wires but may be extended to other uses and relationships.

Claims: 1

1. A process of manufacturing circular cables or grommets, comprising forming a unit length of wire with a stralght portion cf sufficient length to form a core wire, and spiralled portion of sufiicient length to cover the core wire, assembling the wire so shaped upon a carrier, drawing out the straight portion to form. the core and then wrapping the spiralled portion about the said core until it is covered thereby.

2. A. process of manufacturing circular cables or grommets, comprising forming a unit length of wire with a straight portion of sufiicient length to form. a core wire, and spiralled portion of fficient length to cover thecore wire, assbling the wire so shaped. upon a carrier, drawing out the straight portion to form the core, wrapping the spiralled portion about the said coreuntil 't is covered thereby and uniting theend of the wiretc the body of the cable.

'in a number of successive convolutions and then circling the straight portion to form the core and wrapping the spiralled portion about the said core to cover the same.

4. A process of manufacturing circular cables or grommets, comprising the steps of formin a wire with a straight portion and a spirilled portion, the straight portion being of a length suflicient to form the core wire of the grommet and the spiralled portions being of a length sufficient to cover the core wire when Wrapped around the same in, a number of successive convolutions, then circling the straight portion to form the core, wrapping the spiralled portion about the said core to cover the same, and then uniting the end of'thespiralled portion of the wire to the body of the cable.

5. A process of manufacturing cables or grommets comprising the steps of forming a wire with straight pm'tions and with spiralled portions in alternation, the straight portion being of a length su'liicient to form the core wire of the grommet and the spiralled portion being of a-length sufficient to cover the core wire when wrapped about the same in a. plurality of successive convolutions, assembling the wireso shaped on a. carrier, drawing from the carrier the straight length of wire and'circling the same to form the core wire, then passing the carrier about the corewire until the spiralled portion of the -wire completely covers the core wire in a plurality of successive convolutions, then cutting the wire at the end of the spiralled portion.

6. A process of manufacturing cables or 51?; grommets comprising the steps of forming a wire with straight portions and with spiralled portions in alternation; the straight portion belng of a length JlillClBIll? to the core wire of the grommet and the spirailed portion being of a length sutiicient to coverthe core wire when wrapped about the same in a plurality of successive convolw tions,'assembling the wire so shaped on carrier, drawing from the carrier straight length of wire and circling the smile to form the core wire. then passing ra rier about the sore wire until the spiral! portion of the wire com etely covers the core wire in a plurality lutions, then cutting the r re at the end of the spiralled portion and se .iring the end of the wire to the body of the cable.

FRANK BEYlliA.

ccessive convc-

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