US1031975A - Mine-insulator. - Google Patents

Description

P. A., WARREN. MINE INSULATOR. APPLICATION FILED JULY 24, 1911.

Patented July 9, 1912.

Witnesses W ventor Attorneys,

FREDERIG' A. WARREN, OF CANON CITY, COLORADO.

' MINE-fNsULA'roR.

Specification of Letters Patent.

Patented J 11ly9, 1912..

Application filedJ'uly 24, 1911. Serial No. 640,164.

To all whom it may concern: I

Be, it known that I, F BEDERIC A. WAR- 7 BEN, a citizen of the United States,'residing at Canon City, in the county of Fremont lowing is a specification.

and State of Colorado, have invented a new and useful Mine-Insulator, of which the fol- By way of explanation, I will state that in mines, and elsewhere, where falling debris is encountered, such falling. material frequently engages the wiring of the mine.- The wires are commonly fastened rigidly to an insulator, and when the falling rock or other materialstrikes the wire, the wire is broken, the insulatoris torn down, or the wire is slid forcibly along the insulator, thereby stripping the insulation from the One of the objects of the present invention is to provide an insulator which will support a wire, without interfering with the longitudinal movement ofthe wire, the construction being such that, when falling material strikes the wire, the same will yield longitudinally, there being upon the insulator, no element which closely engages.

the wire, to prevent free longitudinal movement thereof.

A further object of the invention is to provide a novel form of base for an insulator, and to provide a novel form of wire holder therefor. I

A further object of the invention is to provide a base and a wire holder, having co-acting parts adapted to receive a tie wire,

the tie wire constituting at once, a means "for holdingthe constituent elements 'of the wire holder together, and a means for maintaining the wire holder, as an entirety, upon the base. r

A. further object of the invention is to provide an insulator which may readily be mounted upon supports of different configurations. I I

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described. and claimed, it being understood thatchanges in the precise embodiment ofinvention herein disclosed can be made within the-scope of what is'claimed without departin from the spirit of the invention. I

In t e accompanying drawings -Figure lshows the insulator in plan, parts being broken away; Fig. 2' is a section on the line A-B of Fig. 1; Fig. 3 is a section on'the line CD of Fig. 1; Fig. 4 is a side elevation ofone member of the wire-holder; Fig. 5 is an end view of the structure shown in Fig. 1;;Fig. 6 is a top plan of the structure shown in Fig. 4; and Fig. 7 is a fragmental section on the line E'F of Fig. 1.

The invention includes as a primary element, a base 1, the same consisting of a trough shaped, arcuate body 2, transversely corrugated upon its inner face, as shown at 3. In the free edges of the body 2, adjacent the ends thereof, are transverse notches 4. In the outer face. of the body 2 are grooves 7, connecting the bases of the notches 4;. @utstanding from the edges of the arcuate body-2, are flaring wings 5, terminally provided with laterally extended feet 6. The outer faces of 'the feet 6' are concaved in their intermediate portions as shown at 8, the extreme-end portions 9 of the feet lying 1n.a common plane, and being flat tened, as clearly appearing in Fig. 3. Since the feet 6 are concaved as'shown at 8, the base 1 may be mounted upon a support having a curved cross section, but since the ends of the feet are flattened, to lie in a common plane, as shown at 9, a fourpoint support for the base 1 is provided, so that the base may rest securely upon a flat structure. Thus, the insulator may be assembled with a mine timber which is either circular or rectangular in cross section. The feet 6 are provided with openings 6*, preferably tapered in form, and inclined toward the longitudinal center ofthe insulator. The openings 6? are adapted to receive securing elements 6", and when these elements '6 are in place, they will be inclined toward each other at their free ends, thereby affording a secure hold upon the support with which the insulator is .assembled. I I

The arcuate body '2 of the base 1 is adapted to receive a wire holder which is denoted generally .by the numeral 10. This wire holderv 10 is somewhat longer than the base 1, and comprises a pair of trough-shaped sections 11. These sections 11. are superficially corrugated, as shown at 12, to engage with thecorrugations 3 of the body 20f the base. The interengagement of the corrugations 12 i and 3 prevents the wire holder 10 as an entity, frommoving longi- I tudinally ofthe base 1, and, at'the same time, the interengagement of these corrugations serves to aline certain of the corrugations with the notches 4 and with the groove 7, the construction being such that when these parts are alined, a tie wire 14 may be passed through the groove 7, through the notches 4 and through one of the corrugations 12 of the wire holder 10, the sections 11 of the wire holder being thus 'held together, and thewire holder, as an entity, being thus held upon the body portion 2 of the base. Through the wire holder 10 extends a longitudinal opening 15, formed partly in one of the sections 11, and partly in the other of said sections. The opening 15 flares adjacent its ends, as shown at 16, the flaring of the opening permitting .the insulator to be used'upon curves, and likewise facilitating the longitudinal sliding movement of the Wire in .the opening 15 without chafing the insulation of the wire.

The'sections 11 of the wire holder 10 are duplicates, and but one of them will be de: scribed. Each section 11, then, is fashioned with longitudinal edges 17 and 18, inclined in opposite directions, longitudinally of the sections, the edges 17 and 18 lying in intersecting planes. radially disposed, as shown at 19. The edge 17 is grooved for one-half of its length,

as shown at 20, a tongue .21 outstanding from the edge 17 throughout the other half of the length of said edge. The cross section of the tongue 21 is the same as the cross section-of the groove 20,- tlieobvious end being to 'permit one sectlon 11, formed as above .described, to interfit 'With another, similarly formed section. The inner, end of the tongue 21 serves to define a shoulder '22 in one section, which, abutting against the similarly formed shoulder in another section, serves to, revent the sections from having longitudinal movement upon each other. When the tongue 21 of one section registers in the groove 20 of another section, the cooperation of these parts will prevent the sections from. moving transversely uponeach other., As the edges 17 and 18 slope in opposite directions, and lie in intersecting planes, the water finding its way between the sections will I travel longitudinally of theinsulator and be discharged beyond the ends of the base 1.

'Referring to Fig. 2 it will be noted that when the feet'6 of the base 1 are assembled 'with a support, the body 2 will be spaced apart from such support, 'and thus the tie wire may be mounted in the. notches 4, without removing the'base' 1 from the support whereby it is carried.

It is to be noted that the conductor is not bound or held in the insulator, but is free.

to slide longitudinally therein, the opening 1n the insulator being flared, to permit this movement in the conductor. Therefore,

The edge 18 is fiat and is lating material wherewith the conductor is surrounded.

It is to be understood that the tie wire 14 is of relatively small diameter, compared with the diameter of the conductor which the insulator carries. Therefore, the tie wire 14 will give away,before the conducting wire is injured, the yielding of the tie Wire 14 permitting a separation of the members 11, and a consequent freeing of the conductor. However, it is to be noted that should the port-ions 11 of the device become broken, the wire 14 remaining intact, the conducting wire will, nevertheless, be upheld.

Having thus described the invention, what is claimed is v 1. An insulator comprising a base and a wire holder mounted upon the base, the wire holder comprising freely separable parts; the base and the parts of the wire holder having alined grooves located in acommon plane and adapted to receivea tie.

2. An insulator comprising a base and a wire holder resting upon the base, the wire holder comprising freely separable parts; the base and the parts of the wire holder having alined grooves located in a common plane; and a tiemounted in the grooves, the tie constituting at once a means for holding the parts of the wire holder together, and a means for maintaining the wire holder upon the base.

3. An insulator comprising an arcuate body having oppositely disposednotches in its edges, and a groove in its outer face, connecting the bases of the notches; anda wire holder mounted in the body; the notches and. the groove being adapted to receive a tie, whereby the holder is bound upon the a body.

4. An insulator comprising an arcuate body having oppositely disposed notches in its edges, and a groove in its outer face, connecting the bases of the notches; and a wire holder mounted in the body; the holder and the body having interengaging corrugations, adapted to allne one of the corrugations in the holder with the notches and with the groove, to receive a tie.

5. As an article of manufacture, a troughshaped block for use in the construction of an insulator, the longitudinal edges of the block being located in intersecting planes,

one of said ed es'being flat, the other of said Y edges being ongitudinally grooved for .a portion. of its length; and pr'ovidh raised rib throughout the remainder of its length, the cross section of the rib correspondingto the cross section of the groove.

6. As an'article of manufacture, an insud with a lator base comprising an arcuate body provided adjacent its edges with outstanding wings, and lateral feet at the extremities of the wings; the outer faces of the feet being concaved at their intermediate portions and being flat at their ends, and disposed in a common plane.

7. As an article of manufacture, an insu: lator base comprising an arcuate body provided along its edges with outstanding elements, the outer edges, of which are concaved, the ends of said elements lying in a as my own,

common plane; the body having transverse notches adjacent its edges, there being grooves in the outer face of the body, 0on necting the bases of oppositely disposed notches.

In testimony that I claim the foregoing I have hereto afiixed my signature in the presence of two witnesses. FREDERIC A. WARREN.

Witnesses: Y

ALVAH S. HOBART, L. A. A'rwoon.

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