US1389773A - Trolley-wire support - Google Patents

Description

- H. L. MI LLER.

TROLLEY WIRE SUPPORT.

APPLICATION HLED DEC-5,19I9.

1,389,773. r Patentdsept- 6, 1921.

2 HEETSSHEET 1.

H. L. MILLER.

TROLLEY WIRE SUPPORT. APPLICATION FILED 0120.5,1919.

Patented Sept. 6, 1921.

2 SHEETS-SHEET 2.

' face of the fixed jaw;

entree STATES PA ENT orrics.

HENRY L. M LLER, or KNOXVILLE, TENNESSEE.

TRoLLEY wIEE SUPPOR 1 i Specification of Letterslate nt.

Patented Sept. c.1921.

Application filed December 5, 1919. Serial No. 342,618.

To all whom it may concern: I

Be it known that I, HENRY L. MILLER, a citizen of the United States, residin at Knoxville, in the county of Knox and tate of Tennessee, have invented a new and useful Improvement in Trolley-Wire Supports,

The object of the invention is to provide.

asupport the parts of which may be cast and finished with a minimumamount of machine workand which shall be-so formed as to adaptthemfor ready and accurate adjustment upon each other and upon the trol ley wire. i

In the accompanying drawings,

' Figurel is a side elevation of a trolley,

wire support embodying my improvement;

Fig. 2 1s a of the same support looktoward the right as shown in Fig. 1;

in Fig. 8 is an'upright section on theline,

3-3, of Fig. 1,, looking toward the right;

Fig. 4 is a perspective view of the two clamping .jaws separated from the upper member of the support;

Fig. 5 is a top view of the jaws shown in Fig. 4, the jaws being separated fromeach other;

Fig. 6 is an elevation showing the inner F 7 is an elevation showing the inner face of the adjustable jaw. Referring to said drawings, A is the upper member of the support. This is of ordinary form and adapted to be secured to a ceiling or the lower face of a hor1- zontal timber. Said member comprlses a downward-directed exteriorly screw threaded metalneck, A which is embedded in non-conducting material, A and surrounded by a metallic washer, A resting against the lower face of the insulation material.

Below the member, A, are two jaws, B and C. The jaw, B, is immovably secured to the neck, A and the jaw, C, isadjustably secured to the jaw, B, and the lower parts of the two jaws engage the trolley wire, E.

The two jaws nearlv meet in an upright plane in which lies the axis of the neck, A and the axis of the trolley wire, E. The

lower part of each jaw is extended laterally along thetrolley wire to extendthe surfaces which engage the wire. Along the inner face of the jaw, B, isa horizontal gr0ove, B adapted to receive aportion' of the trolley wire. The jaw, C, has on its; inner face a'corresponding groove, G to receive. a part of thetrol-ley wire." At itsupper end, the jaw, B, has a lateral extension, B reaching across the above-mentioned, upright plane. Said extension makes room' for formingan upright aperture, B ,;on the axial line of the neck, A Saidaperture is of proper diameter and is interiorly screw threaded to. allow the jaw to be screwed on the neck. The upper endv of the jaw, B, includin the extension, B is made flat and horizontal to adapt it to bear fiatwise against the washer, A When this jaw has been turned to raise it as far as said washer will permit, the jaw is immovable. The exposed lateral face of th-eextension, B is made a part of the surface of a-sphere havingits center in the axial line of the neck, A f

, On the inner faceof the upper part of the jaw, C, is a recess. or semi-socket,' C conforming in reverse tothe rounded or spherical face of the extension, 13?. sion, B rests in said recess or socket. Thus asemi-ball and socket joint is formed. for the partial rotation of the jaw, C, in every direction.

A binding bolt, D, extends horizontally through apertures, D formed in the'jaws, Band C, a little way below the extension, B and the socket, C When said bolt is tightened the inner face of the socket, C of the jaw, G, is pressed againstthe extension, B and the lower edge of the jaw, C, is pressed firmly against the wire, E whereby said wire is pressed into. the groove, B

gof the jaw, B.

The extenwhereby the jaw, C, must turn in a special manner to cause the twojaws to fully grip necks 'A1 untilsaid' 'aws are rl id.

,and oneof said jaws being formed for at-:

tachment to a superposed" member and havpositions.

the trolley wire. 7

I have found in practice that the two jaws may be so cast as to require no more machining than the tapping of the aperture, 13 and in some cases thegrinding of the upper end of the jaw 13, and the cleaning of the grooves, B and C 7 i w F or the, placing of a trolley wire, the members, A, are secured in the desired positions. Then the jaws, B, are applied to the Then each jaw,C, is applied loosely to the companion' aw, B, Then the wire, A, is strung along the line of supports and put'into position' between the jaws and in the jaw grooves of the supports. At ea'chs'upport, the bolt is tightened only sufiiciently to keep the wire from falling. Then the wire is adj usted endwise until it has been brought into' its final position.- Then'th'e bolts aretighte'ne'd to bring the jaws, G, into their final It is to be noted the extension, 13 on the jaw, B, constitutes thesupport for thei j aw, G, the bolt, D, serving merely-to draw the jaw, C", laterally', the jaw turning on the extension, B The jaw, (loan not move downward so long as the-extension, B is engaged in the socket, C Furthermore, the

bolt, D,'is preferably nadeloose in the apertures, D in order'that'the bolt may shift in said apertures suiiiciently'to allow the jaw, C, to swingand turn on the extension, B on the semi-universal joint.

I claim as my invention, 4

1. In a support ofjthe nature described, the combination of a pair of jaws having their loweredges adapted to grip a wire,

ing a single lateral extension and the other aw'havmg a socket to receive said extension, whereby a' semi-universal joint is sion and socket and acting. horizontally, for

drawing, said jaws toward each other, substantially a'S described. 2. In a support of the nature described, the combination of a pair of jaws having their lower edges adapted to grip a wire, and one of said jaws having a single lateral extension in which is an upright interiorly screw-threaded aperture and theother jaw having a socket to receive said extension, wherebya semi-universal joint is formed, and'means located below said extension and socket and acting horizontally for drawing said jaws toward each, other, substantially as described.

'3; In "a support of the nature described,

the combinationof a pair-of jaws having sion, whereby a semi-universal joint is formed,'and each of said jaws'having a transverse aperture, and a binding bolt ex- 7 tending through the apertures, substantially as described. H

4. In a support ofthe nature described, the combination of a pair of jaws having their lower edges adaptedto grip a wire,

and one of said jaws having a single'l'ateral' V 7 extension in which is an upright interiorly screw-threaded apertureand the other aw having a socket tOIGCBlVG said extension,

. whereby a semi-universal joint-is formed,

and each of said jaws having a transverse aperture, and a binding bolt extending through the apertures, scribed. I

In testimony whereof I have signed my name, this 3rd day of December, inthe year substantially as .de-

one thousand nine hundred and nineteen. V

HENRY V

Images