US891955A - Insulator. - Google Patents

Description

No. 891,955. PATENTED JUNE 30, 1908.

' W. C. SANDLIN.

INSULATOR. APPLmATIoL* FILED SEPT. 25. 190s. RENEWBD D'Bo. 1s. 1907.

UNITED sTATEsP-ATENT OFFICE.

WILLIAM C. SANDIJIN, OF ANDREWS, NORTH CAROLINA; ASSIGNOR OF ONE-THIRD TO v ARTHUR MOULTON AND ONE-THIRD TO C. W. SAVAGE.

INSULATOR.

Patented June 30, 1908.

Application mea september 25, 190k, smal No. 279,989. Renewed December 1s,` 1907. I serial No. 406,768.

To all whom it may concern:

Be it known that I, WILLIAM C. SANDL1N,.

a citizen ofthe UnitedStates, residing at Andrews, in the county of Cherokee and State of North Carolina, vhave invented certain new and useful Improvements in Insulators; and I do declare the following to be a full, clear, and exact descri tion of the invention; such as`will`ena`ble ot ers skilled in the art'to which it appertains to make and use the same. v 4

This invention relates to insulators for i telegraph, telephone and electric powerwires,

and one of the principal objects of the same is to provide an insulator which will not require fasteners for the line wire to the insulator, and which will beecnomical in that it will save laborand time in the insulation of telegraph and telephone lines.

Another' object is to provide an insulator which will hold the line wires so as to prevent sagging in' case of breakage between two po es These and other objects, which will appear as the nature of the invention is better ulr- 'derstood, are accomplished bymeans of the construction illustrated in the accompanying drawings in which-v y Figure 1 is a side view of an insulator made in accordance withV my invention; Fig. 2 is al plan view of the same, and showing arshort section of the line wire secured thereto; and

, Fig. 3 is a sectional view throughthe cross A ticular description of my invention, .the numeral 1 designates the base of my insulator, which, as shown, is preferably rectangular in p lan,'and provided with an v'undercut or dove-w tail recess extending lengthwise from end to end" of the base. f Projecting upwardly from the base 1 are two knobs, each comprising a .head 2 and the groove or neck 3 intermediate the head and base of the insulator. The two insulator4 knobs or heads are disposedat such distances `apart as to provide just sucient space between them to readily passage of the line wire 4, said line wire passpermit the ing around within one of the grooves 3 betwo insulators, when added to the weight of the severed wire between the two oles. The cross arm 5 is connected to the ase of the insulator by means of the dovetail 6, as illus-,f

trated in Fig. 3, angL/if found desirable, a

' nail or lother similarl fastening may be driven at the opposite ends of the insulator base, to i hold the same in place upon the cross arm. It is'noted that the two heads of the insulator are disposed in a line at right angles to the direction in which the line wire extends.

Havin LettersLPatentis: v

In a device of the class described and inv combination with a supporting cross arm thus' described my invention, i what 1.o aim as new and desire to secure byy having a dove-tailed tongue, a one-piece insulator comprisin a base having 1n itslower face a dove-teile groove formed to receive said tongue and serve through interlocking enga ement therewith as the sole means for attac ing the insulator to the cross arm, said base'being provided on its upper face with a 'pair of4 marginally'grooved knobs arran ed on the medial line of the base and para lel vwith the longitudinal axial line of the cross arm.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

"VILLIAM C. SANDLIN'.

Witnesses: l f

S. E. BRYsoN,y J. R. Limon.

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