US1944786A - Paper wire rope center - Google Patents

Description

Jan. 23, 1934. M, Q DODGE 1,944,786

PAPER WIRE ROPE CENTER Filed Dec, 4, 1931 Patented Jan. 23, 1934 UNITED STATES PAPER WIRE ROPE CENTER Milo 0. Dodge, Auburn, N. Y., assignor to Columbian Rope Company, Auburn, N. Y., a corporation of New York Application December 4, 1931. Serial No. 579,020

1 Claim.

This invention relates to improvements in wire rope centers.

Primarily, the object of the invention is to produce a wire rope center composed of paper, in order that the cost ofmaterials used in such product will be decreased, as compared with the cost of materials used at the present time, in production of wire rope centers.

A further object is to fabricate the center in such fashion as to simplify its production, and thereby effect a further savings in cost.

A further object is to produce a paper wire rope center having a substantially smooth exterior finish.

Broadly stated, therefore, the invention consists in the production of a paper wire rope center which may be produced at a comparatively low cost, but which will allow the wire strands of a wire rope to imbed and accommodate themselves to said center during the working of the rope or cable.

With these and other objects in view, the invention consists in certain details of construction and combinations and arrangements of parts, all as will hereinafter be more fully described and the novel features thereof particularly pointed out in the appended claim.

In the accompanying drawing,

Figure 1 illustrates one form of paper wire rope center, a portion of the center shown in this figure being partially untwisted to more clearly illustrate the construction thereof;

Fig. 2 is a similar view of a modified form of center.

Wire rope centers, as a general rule, run upwards of a quarter of an inch in diameter, and in view of this, it is preferred that a paper center be composed of a plurality of paper units, as the individual units can be manipulated with much greater ease than would be the case if the center was composed of a single piece of paper. It is, therefore, essential that the several units of paper be so assembled as to insure their retaining their proper form during handling and transportation from the manufacture of the center to the wire rope manufacturer. Furthermore, by fabricating the center from aplurality of paper units, it is possible, as will hereinafter be pointed out, to produce a smooth surface on the finished product.

In that form of the invention illustrated in Fig. 1, which is best adapted for smaller sizes of centers, one paper unit 10 is twisted upon itself to form what might be termed the core of the center, and a second paper unit 11 is twisted around the unit 10, the convolutions of the unit 11 overlapping one another, whereby the core unit 10 is completely covered. As illustrated, this unit 11 is substantially flat, and as a resuit, the finished center has a substantially will retain its finished form at all times during handling and transportation.

In the form of the invention illustrated in Fig. 2, which is adapted for larger sizes of centers, a plurality of paper units 10a are twisted individually upon themselves and then plied together with a reverse twist to form what is termed the core of the center. There is then placed around this core the covering unit 11. In this instance, the covering unit is substantially flat, as in the other embodiment of the invention, and the individual convolutions preferably overlap. In this embodiment, however, the covering unit is applied to the core with a twist reverse to that of the twist with which the individual core units are plied together. This combination of twists will also insure the center retaining its finished form at all times until incorporated in a wire rope or cable.

If desired, a binder may be utilized, although it is not necessary due to the peculiar formation of the center. 0n the other hand, a material such as rubber latex might be used. By impregnating the paper units therewith, such material functions not only as a binder, but also tends to water-proof the center and render it more or less non-conductive electrically. Whether or not such a binder is used, the present center is as efficient as present day centers in that it readily lends itself to accommodation of wire strands constituting the rope or cable, and, at the same time, as before pointed out, production costs are lowered considerably, due to the reduced cost of the material itself, as well as to the reduction in manufacturing costs.

What I claim is:

A wire rope center composed essentially of a plurality of paper units, one of said units constituting a covering for the remaining units, said remaining units being individually twisted in one direction and said covering unit being spirally wrapped around said remaining units in the opposite direction and constituting a tubular casing for said enclosed units.

MILO C. DODGE.

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