US1684312A - Electrical insulator - Google Patents

Description

tscpr. 11, 192s. 1,684,312

J. J. FISCHER EFAL ELECTRICAL INSULATOR Filed Jn. i9. 1926 gwwnkof,

ll M1441 Patented sept. 1.1, legs.

UNITED STATE,S 'PATENT oF FICE;

JOHN J. FISCHER, F MARION, L .INDIANA, AND WARREN R. PAYNE, or DENOYA,

OKLAHOMA.

ELECTRICAL INSULA-roR.

.This invention relates to electrical insulators, and .has for one of its objects the provision of a device of this character which shall be provided Withfan opening for t-he v reception -of the wire and slots to permit the Vwire to be inserted in and withdrawn from the opening, the arrangement of the slots with respect to eachother and the opening vbeing novel and such that, while the wire may be readily inserted inland withdrawn from the opening, it is positively held against accidental displacement therefrom. I With the foregoing and other objects `1n view, thel invention consists of the construction, combination andY arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawing, wherein: v v

Figure 1 is a view .i'n side'elevation of an electrical insulator embodying our invention, p i

Figure 2 is a similar view looking at the opposite side of the insulator,

Figure 3 is a similar View insulator from a third sidethereof,l

F igure 4 is a detail sectional view taken on the planeindicated by the line' 4-4 of Figure 1, and l Fi re 5 is an elevational Viewl of a modified orm of the insulator.

' Corresponding' and like parts are referred to in the vfollowing description, and desigv"nated in the several views of the accompanying drawing, by similar reference characters.

The insulator 1 may be made of glass, porcelain yor other suitable' material, and is provided in itsinner end with a threaded socket 2 to permitof its application to apin mounted on a cross arm or other support. The insulator 1 is provided adjacent its outer end with an opening 3 which. extends diametrically therethrough and is provided for the reception of the wire. A slot 4 extending axially of the insulator 1' and opening out through opposite sides thereof, is' arranged at right angles with respect to the opening 3,

'i -""""and extends from the outer end of -theinv Sula. or to a point inwardly beyond the open- Y l Slots 5 arranged atopposite sides ofthe lookip g at ythe slot: and communicating therewith, incline inwardly and laterally in opposite directions from the opening 3. 'The slots 5 open out through opposite sides of the insulator -l, and I their 'open ends are in alinement with the inner end of the slot 4.-'

The insulator shown in Figures 1-4 is especially adapted for outside use, while the insulator shownj in Figure 5 is especially adapted for indoor use. rlfhis latter insulator provided at its inner end `with an attachlng screw 6, and to permit the ready 'application of the` screw the insulator is made of similar sections. The insulator sections lIl and ll are preferably of semi-cylindrical formation, and are v'provided 'in their inner sides and adjacent their inner ends with recesses 7 for the reception ofthe head 8 of the screw 6. The screw head 8 is provided with small projections 9 which lit in'corresponding vindentations in the walls of the recesses 7 and prevent the insulator and screw from `having relative axial movement. The insulator sections 1a and 1b are secured togetherv by boltslO, the heads and nuts of-which are embedded in the sides of the sections.

The wire may be readily inserted in the opening by first carrying itv into the slot A. until it contacts with the inner or'bottom wall thereof, then turning it until itl is in parallel relation to the slots 5, and by thence moving it outwardly in the slots 5. As the slots 5 incline inwardly and laterally in op-l they are in fplanes right' angularly related to the plane o the slot 4, .there is no possibility posite directions from the opening 3 and as of the wire accidentally leaving the opening 3.

- It should be understood that the-drawing is merely illustrative and does not pretend toglveex'act proportions. Furthermore, the saidgdrawingl is illustrative 'of a preferred construction, it being our expectation that f I various changes and modifications may be made without departing from the spirit and l Scope of the-invention.

' What is claimed is :f 'Antinsplator having a diametrical wire receiving opening, an axial slot arranged at right angles to the opening and extending the ends o'said opening to the inner ends out throngh opposite sides of the insulator, of the slot. said slot extending from the outer end of the In testimony whereof we aix our signa- 10 insulator to a point inwardly beyond the tures.

l 5 opening, and slots arranged 'at opposite sides of the first named slot and extending inward- JOHN J. FISCHER. ly and laterally in opposite directions from WARREN R. lAYNE.

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