US770999A - Wire-support. - Google Patents

Description

No. 770,999. I PATENTED SEPT. 27, 1904.

G. P; BETTMANN &J. ZAPP.

'WIRE SUPPORT. APPLICATION FILED min a, 1902.

N0 MODEL.

UNITED STATES Patented September 27, 1904.

PATENT OFFICE.

CHARLES FREDRIOK BETTMANN AND JOHN ZAPP, OF NEW ALBANY,

INDIANA.

WIRE-SUPPORT.

SPECIFICATION forming part of Letters Patent No. 770,999, dated September 27, 1904. Application filed July 3, 1903. Serial No. 164,222. (No model.)

" (LN whom it may concern:

Be it known that we, CHARLES FREDRICK BETTMANN and JOHN ZArr, citizens of the United States, residing at New Albany, in the county of Floyd and State of Indiana, have invented a new and useful ire-Support, of which the following is a specification.

The present invention relates to devices for supporting electrical conductors, such as telephone, telegraph, and electric wires; and the object is to provide an extremely simple article of this character that will constitute an efiicient support for the conductors without the necessity of tying the same thereto. Said articles, moreover, constitute clutches which will automatically secure the wire should the same break between adjacent poles or supports, thus preventing its falling to the ground or the street and endangering the lives of passers-by.

Two embodiments of the invention are illustrated in the accompanying drawings.

Figure l is a side elevation of the preferred form of support, showing the same applied to the crosstree of a pole. Fig. 2 is a vertical longitudinal sectional view through the same. Fig. 3 is an end elevation of the head. Fig. 4 is a detail perspective view of the upper portion of the support. Fig. 5 is a vertical sectional view, on an enlarged scale, through a slightly-modified form of construction.

Similar reference-numerals indicate corresponding parts in all the figures of the drawings.

Referring to the embodiment illustrated in the first four figures, an insulator is employed, which may be formed of glass, porcelain, rubber, or other suitable material, said insulator being constructed to be inserted in an opening 11, formed in the usual crosstree 12 of a pole, though the device may be used in connection with other supports, as will be apparent. This insulator 10 has an enlarged boss 13 at its upper end, the upper surface of said boss being rounded. The insulator, furthermore, is provided with a longitudinallydisposed bore 14, in which is revolubly mounted the lower portion of a supporting-stem 15. This stem is provided with face of the boss 13.

an intermediate rounded cap 16, that rests upon and conforms to the shape of the upper The stem is secured against displacement by a suitable key 17, passed through its lower end, which end projects below the lower end of the insulator. It will be observed that the length of the key 1'7 is greater than the diameter of the insulator, and thus bears against the under face of the crosstree, consequently securing the entire structure in said tree. The upper end of the stem 15 has an offset neck 18, carrying a wireengaging head. This head comprises an upright shank 19, secured between its ends to the end of the neck and having oppositelyeXtending beaks attached at its ends, said beaks being located at an inclination to the shank 19 and having their free terminals overlapped, but spaced slightly apart, as shown, to form a contracted entrance-throat 21. As a result of this particular arrangement a wirereceiving seat 22 is formed that tapers toward its lower end. The stem is secured in the crosstree of a pole, as clearly shown in Figs. 1 and 2, and is thus freely revoluble. In stringing the wire it is only necessary to pass the same through the contracted entrance-throat 21 and stretch it, keeping the same out of the lower end of the seat. After being stretched the wire is allowed to drop into said contracted end and will thus be supported without being tied to the article. Should the wire break between two of the supports, however, the head, being offset from the axis of rotation of the stem, will turn slightly and the wire will be clutched tightly in the seat. Thus the ends will not slide through the supports and fall to the grou. fl. Decided advantages therefore are obtain 'd by the particular arrangement of the ele mentsnamely, the freely-revoluble spindle and the offset head with its wire-receiving seat. Moreover, under ordinary conditions the wire cannot become detached, as it is out of alinement with the throat 21, through which it is passed.

A slightly-modified form of construction is illustrated in Fig. 5, wherein a portion of the article is shown, the parts not illustrated bearing the same relation as those described. The stem is designated by the referencenumeral and has a cap 16 thereon that corresponds to the shape of the insulator. Instead of a key for holding the spindle in place, the lower end of said spindle is threaded, and a holding-nut 17 is screwed thereon. The stem, cap, and portions of the nut may be coated, as shown at 23, with suitable insulation, though this is not entirely necessary.

From the foregoing it is thought that the construction, operation, and many advantages of the herein-described invention will be apparentlto those skilled in the art without further description, and it will be understood that various changes in the size, shape, pro- I portion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a device of the class described, the combination with an insulator-supporting device, of a supporting -stem journaled and freely rotatable in the supporting device, means for preventing the longitudinal movement of the stem in either direction in the supporting device, and an offset head carried by the free end of the stem and rotatable therewith, said head having a Wire-receiving seat that is ofiset from the axis of rotation of the stem.

2. In a device of the class described, the combination with a supporting-sleeve having an upright opening therethrough, of an upright supporting-stem passing through the opening and freely rotatable in the sleeve, means carried by the stem and engaging the upper and lower ends of the sleeve for preventing the disengagement of said stem from the sleeve, and an offset head carried by the free end of the stem and rotatable therewith, said head having an inclosed wire-receiving seat, that is ofiset from the axis of rotation of the stem.

3. In a device of the class described, a stem, and a head carried by the stem, said head comprising a shank and oppositely-extending overlapping and outwardly-projecting beaks carried by the shank, said beaks being spaced from an intermediate portion of one side of the shank and located at an inclination thereto, forming an inclosed tapering wire-receiving seat.

4. In a device of the class described, the combination with an insulator, of a stem journaled in the insulator and having acap covering the upper end thereof, said stem being also provided with an offset neck, and a head comprising an upright shank connected between its ends to the neck and having oppositely-extending overlapped beaks forming a wire-receiving seat.

In testimony that we claim the foregoing as our own we have hereto aflixed our signatures in the presence of. two witnesses.

CHARLES FREDRICK BETTMANN. JOHN ZAPP.

IVitnesses:

WILLIAM ECKHART, DENIS GLEAsoN, Jr.

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