US1029207A - Insulator-support. - Google Patents

Description

O. P. MEGAHAN.

INSULATOR SUPPORT.

APPLICATION FILED JULY 18, 1911.

1,029,207, Patented June 11, 1912.

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The present invention relates'to improvements in insulator supports.

The object of the invention is the provision of a cross arm having wire supporting devices of novel'formwhich are efficient and durableand will prevent falling of the wire should a break occur; to provide a rigid and compact joint between the cross arm and pole; and generally to improve the construction of devices of this character as will be hereinafter set forth.

The invention consists in certain novel features of construction and combinations and arrangements of parts as illustrated in thedrawings and more particularly pointed out in the claim.

The accompanying drawings illustrateone' completeexample of the embodiment of the invention, and a modification thereof, constructed accordin hflVBSO far devised or the practical appli-- to the best mode I cation of the principles; 4 V

. Figure 1 is an elevation of the top of a pole with the cross arm' attached thereto. Fig. 2 isaside elevation of Fig. 1. Fig. 3 is a view of a single hanging pin. Fig. 4 is a view ofadouble hanging pin. Fig. 5

is a view of a single top pin. Fig. 6 is a partial side elevation of the cross arm showing form of hanging pin with modified at- Fig. 7 is a side viewrof Fig. 6. Fig. 8 is an enlarged sectional view of the cross arm showing reinforcing construct-ion and perforation for insulator pins, Fig. 9 is a sectionahview of the cross arm with metallic thimble or socket for the insulator pin. Fig. 10 isa side elevation of pole showingstay rods and manner of securing the arm to the pole and space left for adjustment.

The pole l-may be of wood or concrete construction and is provided witlrai'ecess or socket 2 for the reception of an edge portion of the cross arm 3. -The cross arm is Specification if Letters Patent.

Application filed July 18, 1911. Befial 1T0. 839,128.

PatentedJune11',1j912.

composed-0f concrete reinforced with longitudinal bars 4 and connecting wires or bars 5, and is preferably A-shape in cross section for securing strength combined with lightness in weight. The cross arm is secured to the pole by.means of astrap bent, as in Figs. 2 and 10, to conform to the shape of the cross arm and secured by bolts 7 and 8 to the pole. A pair of metallic stays or brace bars 9 are bolted at 10 to the pole and the free end of each bar is twisted and perforated as at 11 for attachment to the under side of the crossarm.

In 1 two forms of insulator pins are illustrated, as means for securing the brace bars to the cross arm. The single han pin 12 is provided with a U-shaped bend 13' upon which the insulator 14 is supported.

The threaded end 15 of the rod with the lower nut 16 thereon is passed through the perforated end 11 of the stay arm 9 and the opening 17 in the cross arm, and the bar is clamped in position by the upper nut 18. The double hanging pin 19 is identical with the single pin .12, but has a longer threaded end upon which may he placed'an upper insulator 14'. In some instances the hanger pin may be formed with a hook 20, as shown in Figs. 6 and 7. In this case the hook is perforated and the usual-bolt 21 is passed therethrough, through the cross arm and also through the perforated end 11 of the stay bar 9. It will be understood that the bolt 21, (Fig. 5) may also he used to support an insulator, as at the right endof Fig. 1. A further modification is illustrated in Fig. 9 wherein the cross arm has embedded therein a metallic socket 22 for the reception of the insulator pin which may he wood or metal, and to drain of? moistnre, the lower end of the metallic thimble socket is perforated at 23 which alines with the perforation 2 E of the cross arm. Under certain conditions, wood strips, indicated at 25 (Fig. 8) may be laid on top of the cross arm and under the pins, as a-non-conductor or wear plate for the wire which might become loose and drop onto the arm. And wood lined hangers 26 (Fig. 6) may also he used for the same pose on the lower insulator pins.

Having thus fully described inveir purtion, what I claim as new and desire to se- I bolt passed through said hook and arm and cure by Letters Patent is: having a second insulator thereon." 10

The combination with a cross arm of a In testimony whereof I aflix my signature support formed with an upwardly bent in presence of'two Witnesses.

=' lower hooked end having an insulator there- OLIVER P. MEGAHAN.

on, a flat perforated upper end shaped with Witnesses: a downwardly bent hook engaging the arm KATHARINE VINCENT, and suspended thereover, and a fastening C. M. SHIGLEY.

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