US763355A - Electric-fixture support for outlet-boxes. - Google Patents

Description

PATENTED JUNE 28, 1904.

W. P. BOSSERT. ELECTRIC FIXTURE SUPPORT FOR OUTLET BOXES.

APPLIOATION PILED JAN. 9. 1904,

NO MODEL.

UNITED 'STA TES Patented June 28, 1904.

PATENT OFFICE.

VILLIAM F. BOSSERT, OF UTICA, NEWY YORK, ASSIGNOR TO THE BOSSERT ELECTRIC CONSTRUOTION COMPANY, OF UTIOA, NEW YORK.

ELECTRlC-'FIXTURE SUPPORT FOR OUTLET-BOXES.

SPECIFICATION formng part of Letters Patent No. 763,355, dated June 28, 1904.

Application filed January 9, 1904. Serial No` 188,296. (No model.)

T0 (tll wlwm, it may concern:

Be it known that I, WILLIAM F. BossER'i', residing at Utica, in the county of Oneida and State of New York, have invented certain Improvements in Electric-Fixture Supports for Outlet-Boxes, of which the following is a specification.

The present invention relates to improvements in interior-conduit outlet-boxes, and especially to the outlet-boxes provided with means for supporting inside thereof the electric-fixture supporting-lamps which are fed with current from the conductors entering in said box. The interior conduits and the boxes at which they terminate are placed in position before the plastering is applied to the walls, and it frequently happens that the Outlet-box is not in alinement with the face of the plastering, and consequently the fixture-'does not present a true appearance with the face of the wall, which detracts greatly from the designed effect. To obviate this defect was the object of Patent No. 7 25,664, dated April 21, 1903, granted to me, and upon which this invention is an improvement. In the said patent a suitable spherical surface is provided within the box, in contact with which is a curved surface forming the inner end of a support for the electric-lamp fixture. The said support (and its curved surface) is firmly and adjustably held to the said surface within the box by bolts or screws which pass through arms from the said support and are threaded into the wall of the box, and by means of the bolts or' whereby the said support is electrically separated from the box, as I will now proceed to describe, and point out in the appended claims.

Of the drawings which illustrate the invention, Figure 1 is a sectional view of an outlet- 5o box illustrating the invention. Fig. 2 is a plan view of an element shown in Fig. 1. Fig.

3 is a sectional view of an Outlet-box, also showing the invention; and Fig. A is a plan View of an element shown in the previous 5 5 figure. Figs. 5 and 6 are sectional views showing modifications of the structure of the invention.

In Fig. 1, a represents an Outlet-box made from thin Sheet metal and provided with 6o partly formed and weakened openings .r/-that is, the metal is partly pressed out and can be fully forced out by a blow from a hammer and an opening f/ is thus shown in the bottom wall w of the box. A cover b is represented as secured to the box a by screws, and it has a central opening o, surrounded by a fiange. W'ithin the box is a support A for an electrical fixture, which is screwed upon the outer end e, which is threaded for that purpose. The support A is mainly constructed as represented in the patent referred to, to which reference is made, and has its inner end provided with a hollowed-out or spherically-concaved surfaceij, and its periphery is provided with a plurality of arms f, having holes through which extend the bolts or screws w' to thebottom wall of the box into threaded holes therein. The bolts or screws n are insulated from the arms f by the insulating-thim- So bles (Z. B is a detachable and independent disk of insulation, such as hard rubber or vulcanized fiber or other insulating material, and has an upper convex surface K, fitting into the concave surface j' of the support A. The S 5 lower side of the disk has an offset 2', which fits into the hole g in the bottom of the box and holds it firmly in place, and when the box is i??l aim by turning the bolts or screws 'a in and out of the bottom wall w the support A can be adjusted and brought into a right angle with the face of the plastering, whether the front of the box is in alinement or not, and then the bolts 01' screws will hold the two surfaces 7' and K to each other and to the bottom wall of the box, and at the same time theI fix- .ture-support A is fully insulated from the box a and from the metal conduits which enter the same, and all danger of current leaking thereto is obviated.

Fig. 2 indicates the same features shown in Fig. 1, except that the curvature of the surfaces y' and K is reversed, and the block or disk B is represented as and may be made of glass or porcelain orl any vitrified material.

In Fig. 5 I represent a piece of insulation B of an oval cross-section, providing convex surfaces to be interposed between the bottom wall w of the box and the concaved surface of the support. Its lower curved side rests in and is centered in the hole g of the wall w. It will be readily understood that this interposed piece may be entirely spherical, if desired.

Fig. 6 represents the bottom wall w of the box as swelling up into its interior, the upper curvature or surface P fitting into the concaved surface of the inner end of the support A. ln this case the interposed insulation m is attaohed to the support A and moves with it.

It will be understood that the intention of the invention is that the surfaces j and K shall be of opposite curvature, one of which will be of insulating material, so. that the fixture-support A may be properly adjusted, combined with the adjusting arms and bolts or screws, whereby the support and its arms are moved as a whole whenever the bolts are lengthened or shortened as described. I/Vhat I claim is--- 1. In an Outlet-box, an opening in the bottom of the box with two or more bolt-holes about the same; a support for a fixture having a screw-thread at its outer end, and a spherical surface at its inner end, with boltholes at its integral periphery; an insulatingblock between said outer end of the support and the bottom of the box adapted to rest in the opening thereof having a stationary spherical surface coinciding with the movable spherical surface of said support, with adjustable means for holding the said surfaces to each other and to the bottom of the box consisting of bolts or screws passing through the holes in the said periphery and through the holes in the bottom and insulated therefrom, as set forth.

2. A metal Outlet-box having partly-weakened openings in its walls, one of which is punctured, and surrounded by a plurality of threaded holes; a support for a fixture having a screw-thread at its outer end, and a spherical surface at its inner end with a plurality of integral perforated arms, said perforations registering with the holes in the said wall, an independent and detachable insulating-piece interposed between the end of the said support and the wall of the box, having a stationary spherical surface engaging the movable spherical surface of the support with adjusting bolts or screws passing through the said arms and insulated therefrom into the said threaded holes, as set forth.

3. A metal Outlet-box having partly-weakened openings in its walls, one of which is punctured, and surrounded by a plurality of threaded holes; a support for afixture having a screw-thread at its outer end and a concave surface at its inner end with a plurality of perforations at its periphery registering with the holes in said wall, an independent and detachable insulating-piece interposed between the end of the saidsupport and the wall of the box having a stationary convex spherical surface engaging the movable concave surface of the support on one side and resting in the said punctured hole on the other side, with adjusting bolts or screws passing through the perforations in said periphery and insulated therefrom into the said threaded holes, as set forth.

4. In anl Outlet-box, a support for a fixture having means at its outer end for securing the fixture thereto, and at its inner end a spherical surface, and insulated bolt-holes in its periphery; an independent and detachable insulating-pece between the inner end of the support and the wall of the box having a stationary spherical surface engaging Vthe movable spherical surface on the inner end of the support, and adjustable means for holding the said surfaces to each other and to the wall consisting of bolts or screws passing through the said insulated holes into threaded holes in the bottom of the box, as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 6th day of January, 1904. i

WILLIAM F. BOSSERT.

W'itnesses:

FRnDnnIoK T. FoxENBnRGER, WM. H. MATT1N.

IOO

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