US838886A - Outlet-box. - Google Patents

Description

No. 838,886. PATENTED DEC. 18, 1906. M J MQGOW JR- OUTLET APPLICATION FILED DEC 14 1906 fizmeiion g,- fi' f h UNITED STATES PATENT FFIOE.

Specification of Letters Patent.

Patented Dec. 18, 1906,

Application filed December 14,1905. Serial No. 291.663.

To all whom it may concern.-

Be it known that I, MICHAEL J. MoGowAN, Jr., a citizen of the United States, residing in the city of Newark, State of New Jersey, have invented a new and useful Improvement in Outlet-Boxes, of which the following is a description.

Hitherto in boxes of the several types illustrated in the annexed drawings it has been the custom to form the box and thimbles as separate pieces and after drawing the circuitwires through the aperture formed in the box to secure the thimbles to the ends of said wires, after which the wires are drawn back through the said apertiues until the thimbles engage the interior of the box, and then the thimbles are secured to the box by some fastening means. By my construction I avoid this unnecessary labor both in manufacture and in setting up by making the box and thimbles integral either by casting or by striking up from sheet metal by means of dies.

Another feature of my invention resides in constructing the boxes with the thimbles projecting diagonally into the box. This is to avoid the making of too deep a cavity into the wall or ceiling to receive the box. It frequently happens in electrical wiring that these boxes are required to be set into the walls where the plastering is backed up by a brick wall, and the depth of the box is such that the insertion of the wires into apertures in the bottom of the boxes is impracticable without cutting a deep cavity in the wall to make room for the passing in of the wires.

In the accompanying drawings, forming a part of this specification, Figure 1 is a sectional view of my improvement as applied to an oblong switchbox. Fig. 2 is a plan view of the same. Fig. 3 is a sectional view of a square wall-box. Fig. 4 is a plan view, and Fig. 5 is a sectional view, of a circular ceilingbox. Figs. 6 and 7 are plan and sectional views of a circular ceiling-box provided with diagonal thimbles.

In Figs. 1 and 2 I illustrate a switch or re ceptacle box in which A is the box-body, provided on its open side with the laterally-projecting flanges (1, having the screw or bolt holes a. Projecting into the cavity of the box are the integral thimbles B, having the cylindrical cavities b and contracted apertures Z). The set-screws C are provided for securing the ends of the circuit-wires in position in the cavities b with their stripped portion projecting through the apertures 17.

In Figs. 4 and 5 I show a ceiling-box A, of circular form, with the thimbles B projecting into the cavity of the box parallel with the axis thereof, as shown. D is a central aperture in the bottom of the box for the passage of a gas-pipe where the box is used in connection with a gas-lighting system.

In Figs. 6 and 7 I show the thimbles B as extending diagonally into the box for the purpose hereinbefore described.

It will thus be seen that by beveling the lower corners of the box, as illustrated in Figs. 1, 2, and 3, and the lower periphery of the circular box, as illustrated in Figs. 6 and 7, I am enabled to insert the circuit-wires without excessive excavation to the rear of the box, while the making of the thimbles integral with the box avoids much labor in wiring up and produces a box of neat and eflicient construction.

What I claim is 1. An outlet-box for electric wiring having thimbles integral therewith, said thimbles projecting into the cavity of the box.

2. -An.outletbox for electric wiring having thimbles integral therewith, said thimbles projecting diagonally into the cavity of the box.

3. An outlet-box for electric wiring having the lower edge thereof beveled and an integral thimble projecting diagonally into the box from said beveled edge.

4. An outlet-box for electric wiring provided with integral thimbles, a contracted aperture in the bottom of each of said thimbles for the introduction of circuit-wires, and means for securing said wires in position.

This specification signed and witnessed this 8th day of December, 1905.

MICHAEL J. MCGOWAN, JR.

Witnesses:

Fnnmr. O. FISCHER, O. A. ALLIsToN.

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