US163807A - Improvement in lightning-rod standards - Google Patents

Description

w. s. nEYunN el L1. MARTIN;

l Lightning-od Standard. 10,163,807. Patentedmayzmma.

THE GRAPHIC C0.PHOTO-LITH.39&4I PARK PLACE,N.Y.

A UNITED STATES WILLIAM S. REYBURN AND FIIEDERIGK J. MARTIN, OF PHILADELPHIA, PA.

PATENT OFFICE.

IMPROVEMENT IN LIGHTNING-ROD STANDARDS,

Specilication forming part of Letters Patent No. 163,807, dated May 25, 1875; application filed April 5, 1875.

To all whom 'it may concern:

Be it known that we, WILLIAM S. REYBURN and FREDERICK J. MARTIN, of Philadelphia, Pennsylvania, have invented a certain Improved Lightning-Rod Standard, of which the following is a specification:

The object of our invention is to construct a cheap, substantial, and generally eiticient stand for the upper portions of lightningrods; and this object we attain in the manner which we will now proceed to describe, reference being had to the accompanying draw ings, in which- Figure l is a side view, partly in section, of our improved stand for lightningrods; Fig. 2, a top view of the upper end ofthe stand; and Fig. 3, a sectional plan on the line l 2, Fig. l.

The lower portion of the stand consists of a tripod, A, the legs a c a of which are riveted or otherwise secured to a plate, b, the feet being formed, in the present instance, for attachment to the peak of a roof. This plate b may form part of a bracket, b', for containing the insulator, through which the lightning-rod passes, the portion for receiving the insulator being shoivnfby dotted lines in Fig. 3.

When an'insulator so low down as the plate b is not required, the said plate may be made of the simple form shown by plain lines in Fig. 3, with a central hole for receiving the lower end of the stem B, and three holes for receiving the upper ends of the legs.

To a shoulder on the top of the ste-m is riveted the bracket D, for receiving an insulator for the lightning-rod.

Whether the plate b forms part of an insu lator-bracket or not, I prefer to make it of malleable cast-iron, the holes being formed during the process of casting, so as to obviate the necessity of drilling, the legs a and rod B being, by preference, of wrought-iron.

The structure, although simple and comparatively light, is of a substantial and permanent character, and can be cheaply manufactured, as there is nothing in its construction to demand skilled labor.

rIhe stem B may, in some instances, be made of a tubular sectional form, as shown in Fig. 3, this form of kstem being especially applicable to what are known as cable-rods, which it is necessary je Enclose in a tube when they are carried above the roof of a building, in order to impart to them the required rigidity.

We claim as our invention- The within-described lightning-rod `stand ard, consisting of the legs a, plate b, which may or may not form part of a bracket for an insulator, the stem B, and insulator-bracket D, all being constructed and combined substan tially as and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

WILLIAM S. REYBURN. F. J. MARTIN.

Witnesses:

HUBERT HowsoN, HARRY SMITH.

Images