US1080904A - Electric-lamp holder and reflector. - Google Patents

Description

L. M. FLUHART.

ELECTRIC LAMP HOLDER AND REFLECTOR.

APPLICATION FILED JULY 12, 1912.

Patented Dec. 9, 1913. 1

COLUMBIA PLANOGRAPH 60., WASHINGTON. D. c.

LAURENCE M. FLUI-IAR'I, OF DES PLAINES, ILLINOIS.

ELECTRIC-LAMP HOLDER, AND REFLECTOR.

Specificatiofi of Letters Patent.

Patented Dec. 9, 1913.

Applicationfiled July 12, 1912. Serial No. 708,989.

To all whom it may concern:

Be it known that I, LAURENCE M. FLU- HART, a citizen of the United States, residing at Des Plaines, in the county of Cook and State of Illinois, have invented new and useful Improvements in Electric-Lamp Holders and Reflectors, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved electric lamp holder of the character required for industrial or shop service, having the shade or reflector base formed as a part of the unitary device comprising the lamp receptacle and aflording means for attaching the entire device to the pipe which incloses the inleading wires.

It consists in the elements and features of construction shown and described as set out in the claims.

In the drawings :Figure 1 is a partly sectional elevation of a device embodying this invention, the section being made in a plane axial wlth respect to the lamp socket through the supporting pipe and reflector base. Fig. 2 is a section at the line 22 on Fig. 1.

In a device of this character, it is desirable to support the lamp socket within a hollow neck of the reflector base of suificient depth so that the coils of the lamp filament or the center of illumination shall be properly situated with respect to the focus of the reflector, and this necessitates having a suflicient length of free wire available to reach out of the neck, so that the wire can be attached to the binding post or screws of the lamp receptacle or socket piece; and this in turn makes it desirable that there should be space enough in the neck back of the position at which the lamp socket is attached in service to accommodate the excess of wire; that is, to permit it to be tucked or folded in the upper part of the neck behind or above the lamp socket. It is also necessary that the socket supports shall be permanently rigid with the reflector base, and it is important and one of the purposes of this invention that the securement of the lamp socket support to the reflector base, or its securement in such manner as to be rigid therewith, shall avoid any fastening devices, such as bolts or rivets, taking through the reflector base so as to be exposed outside the latter or so as to require holes to be formed in the reflector base. The reason for avoiding such exteriorly exposed fastenings and the holes through which they must protrude if employed, is that such holes afl'ord access for moisture around the bolts or rivets, and the protruding heads serve to collect and hold the moisture which eventually pene trates the holes under the heads of the bolts and around the bolts, causing rust of the metal and eventually looseness of the bolts and thereby insecurity of the fastenings.

The structure shown in the drawings accomplishes the purposes above indicated, as will appear from their detail description.

A is the reflector base, which may be con tinued as a complete-reflector, as indicated, the outer part of such reflector being shown broken away in Fig. 1.

B is the hub or throat piece which is screwed on to the pipe, 0, through which the inleading wires are conducted.

D is the lamp socket, which is shown in a form of such devices which is familiar and common for industrial purposes, comprising a single piece of porcelain with the necessary metal parts (not shown) mounted upon it in the usual manner.

E is the socket support or hanger. It comprises two standards or arms, E which project at diametrically opposite points from the annular head piece, E of said hanger; The central opening in such head piece is substantially equal in diameter to the top opening of the reflector base which receives the reduced end of the hub, so that when the hanger, E, is inserted into the neck, A, of said reflector base, and its said central opening is matched with the top opening of the base, both parts,reflector base andsocket hanger,may be passed together on to the reduced end of the hub back to the shoulder, b; and the protruded end or inner margin of the hub is then swaged or spun down on to the margin of the central opening of the hanger, as seen at b in Fig. 1, and both said parts are thus securely and permanently attached rigidly to said hub. This is done before the enameling of the device, and the enamel subse quently applied covers all the surfaces at the joints, formed in the manner described, between the hub, reflector base and socket hanger, leaving no exposed fastenings or openings for moisture to cause rust and loosening, as described.

The arms, E of the hanger are terminated by outwardly turned lugs, E having threaded holes to receive the screws, f, which are inserted from below through the flange, D of the socket. D. There is thus afforded in the neck, A of the reflector base any desired amount of space for tucking the inleading wires, J, J, of sufiicient length to permit the socket to be withdrawn entirely out of the neck, A for attaching said wires to the binding posts or screws, K and K, at the back of the socket.

I claim 1. A combined socket and reflector base, comprising, in combination with a hub, a reflector base having a deep neck and a cen tral opening at the top thereof; a socket hanger comprising an annular head, and hanger arms extending from the margin thereof longitudinally of the neck, the central opening of said annular head being coincident with the opening at the top of the reflector base, the hub having a reduced end entered through said coinciding apertures, the margin of the hub being swaged down inside the neck on to the margin of the central aperture of said annular hanger head, whereby said hanger head and reflector base are bound tightly on to said reduced end of the hub, and a socket or lamp receptacle mounted on the lower ends of the hanger arms within the neck.

2. In combination with the hub having a reduced end forming a shoulder, the reflector base having a deep neck apertured at the top; a socket hanger having a central aperture coincident with the top aperture of the reflector base, and hanger arms exfleeting surface and having a central opening at the top, a hub interiorly threaded for connection with a wire conduit pipe and permanently secured .in the central open ing of the reflector base, and hanger arms extending from said hub into the neck of the base for supporting a lamp socketin said neck intermediate the reflecting surface and the top of the neck to afford space between said lamp socket and the top of the neck for extra length of leadwire, said hanger arms being permanently and rigidly con nected with the reflector base, said hangers, hub and reflector base havingfall exposed surfaces coated with enamel both exteriorly and interiorly.

In testimony whereof I have hereunto set my hand at Des Plaines, 111., this 26th day of June, 1912.

LAURENCE M, FLUHART.

Witnesses GUS OSTERRITTER, Rev. JNo. LINDEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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