US1168350A - Lighting-fixture. - Google Patents

Description

F. W. WAKEFIELD.

LIGHTING FIXTURE.

urucmon FILED Ammlslz.

1,168,350, Patented Jan. 18, 1916.

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bi fie/ H ATTORNEY 4 UNITED STATES OFFICE.

FREDERICK W. WAKEFIELD, 'YERMILION, OHIO; ASSIGNOR fIO THE F. W. WAKEFIELD BRASS COMPANY 'OF VERMILION, OHIO, A CORPORATION OF OHIO.

'. fLIGHTI'NG-FIKTURE.

Specification of Letters Patent.

Patented Jan. 18,1916.

To all whom it m a} concern i' s Be it known that I, Fnsonmon Wa t-r.- rncrp, a citizen of the United States, and a Stated-of Ohio, have invented a new and useful Improvement in Lighting-Fixttu'es, of which the following is a specification, the principle of the invention bein herein explained and the best mode in liich I have contemplated ap )lying that-principle, so .as to distinguish it irom other inventions.

The present invention relates to an insulated coupling, and more particularly to an improved coupling for use in electric lighting connections.

It is particularly adapted to use in connecting an electric lamp to a support upon a wall or ceiling, as the support and the lamp must be entirely and completely insulated from each other.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claim.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such dis closed means constitutin however, but one of various mechanical orms in which the principle of the invention may be used.

In said annexed drawing:-Iigure 1 is a section showing a ceiling and a conduit containing wires which is connected with my improved coupling; Fig. 2 is a similar section showing the coupling when used with a crowfoot or bracket; and Fig. 3 is a vertical central section through the device shown in Fig. 2.

In Fig. 1 there is shown a ceiling 1 in which is mounted a box 2 set into the ceiling and having an a erture 3 at the top in which theremay we inserted the end of a conduit 4 adapted to contain insulated wires 5 leading tothe source of current. The end of the conduit 4 may be threaded and will be engaged by a socket or connecting memher 6 which is apertured and interiorlv threaded, and has projecting iaws 7 extending outwardly therefrom. These two jaws 7 are attached to a pin 8 whichis-set 1n the insulating block 9 and proiects beyond the same on either side. A similar connecting or socket member 10 will be attached in like manner about a second pin 20, (see Figs. 2 and 3) which is above the pin .8 and at right angles ,thereto, such two pins lying 3 1n .parallel p'lancs wluch are spaced .from resident of VQIllllllOIl, county of-Er1e,.and

each pther. It is unimportant as ,to. whether the pm 1s pivoted in the block 9 or the jaws .,al'e,l ivotally attached to the pin, as either construction .will give the universal joint action which is sought. The electrical wires 5 are adapted to extend through the aperture in .the-sooketmember 6 and will-then ,pass around the insulating block 9 and through the aperture 11 in the socket member 10.

The conduit 4 is preferably of metal and is generally laid along the ceiling and parallel thereto. It is thus impossible to lead the end through the ceiling except by bending the conduit in a sharp curve. It is, of course, extremely diflicult to bend a metal conduit at right angles, or at possibly a little more than right angles, in this case were the conduit to proiect at right angles to the ceiling, and for this reason the usual connection of this conduit to the electric light bulb is such that the bulb will stand in a position other than vertical. By using a universal joint of the construction here shown it is possible to secure a vertical position for the electric bulb without bending the conduit 4 except at the very gentle curve illustrated in Fig. 1, which is readily possible without straining the conduit.

The present coupling is designed for use not onlv with flexible metal conduits, but also with rigid brackets such as a crowfoot 12 (see Fig. 2) which will be attached directly to the ceiling. The wires'5 will then project through an aperture in the base 13 of the crowfoot'. and will pass through an aperture 14 in the projecting portion of the same. This aperture 14 will be threaded and adapted to engage a socket member 6 similar to the one shown in Fig. 1, except that it is of less exterior diameter and is exteriorlv threaded to engage the threaded aperture in the crowfoot. In all other respects the coupling shown in Fig. 2 is identical w th that shown in Fig. 1.

' In Fig. 3 the position of the pins is shown, and it will be noticed that they are spaced a considerable distance apart in the block 9, thus completely insulating the electrical bulb from the ceiling or wall through the coupling. The only electrical connection between the wall.-v and the bulb will be the wires 5 which are, of course, insulated from the conduit 4, or from the crowfoot 12, when used withsuch a member.v 1

The simplicity of construction and ease of connection render my improved coupling of great advantage in electrical wiring of various types, while the appearance of :the

coupling is such as to adapt it to use with I various ornamental fixtures without in any way injuring the effect intended to be produced. i

Other modes of'applying'the principle of my invention may of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by the following claim or the equivalent of such stated means be employed.

Copies of this be employed instead Y patent may be obtained for five cents each. by addressing I- therefore particularly point out and distinctly claim as my invention The combination of an outlet box having an aperture in the top thereof, a cable-containing conduit passing through such aperture in; said box, and an insulated universal joint formed of upper and lower portions connected through insulating material and constructed to allow the convenient passage of the electrical cables, having its upper portion directly connected to said conduit,

the Commissioner of Patents.

Washington, D. 0."

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