US1384896A - A corpora - Google Patents

Description

E. H. HOWARD.

SPOTLIGHT.

APPLICATION FILED MOV. 3. 1919.

Patented July 19, 1921.

far] H Howard UNITED STATES PATENT OFFICE.

EABILH. HOWARD, F LOS ANGELES, CALIFORNIA, ASSIGNOR T0 GILFILLAN BROS. SLIELTING REFINING COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORA- it'roit or CALIFORNIA.

SPTLIGHT.

Specification of Letters Patent.

Patented July 19, 1921.

Application led November 3, 1919. Serial No. 335,331.

To all whomit'may concern.' f

e it known that I. EARL Il. HowAnn, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented new and useful Im rovements in Spotlights, of which the fol owing is a specification.

This invention refers to spotlights for automobiles and particularly to the means of holding and securing the lamp reflector and lamp socket to the supporting standard in a simple manner and effectively.

ne form of the invention embodies a vertical lamp socket holding standard which, at one end, in a socket which isa part of a universal joint (not shown) and, at the other end has a head which holds the lamp sockets. Inside the head and around the lamp socket I place a longitudinally slit tube, the tube at one end being flanged and to hold the reflector and at the other end being slit so that lateral pressure may be ut on it to hold the lamp socket in place. he reflector' flange is held in place between the lamp socket holding standard and the re- Hector.

In one form I use a longitudinally slit tube which extends back past the standard head and on which I place a screw threaded nut. The threads on the tube and nut are tapered So that tightening on the nut forces the tube pieces tightly around the lamp socket. In another form, I use a set screw in the standard head, serving to hold the split tube in place in the head and serving also to compress one of the split parts of the tube against the lamp socket to hold it in adjusted position. y

The device, in all, has a sightly appearance, is easy to operate and is simple in construction.

In the drawings I have shown preferred forms of my invention, in which- Figure 1 is a partial longitudinal central section showing one form of my invention; Fig. 2 is a section taken on line 2 2 on Fig. 1; Fig. 3 is a section showing a modified form of device; and Fig. 4 is a section taken on line 4 4 of Fig. 3.

Referring now particularly to Figs. 1 and 2: The numeral 10 designates a lamp holding socket adapted to hold a lamp at one end and handle 11 at the other end. This socket is normally placed as shown in Fig, 1 and around socket 10 I place tube 13,

the socket being longitudinally movable within the tube. The tube 13 is slit longitudinally at 131 and enough clearance is left between the split pieces so that one piece may be pressed down or all drawn together to tighten the tube around the socket. The other end of the tube is Iliade with a flange 13" as shown in Fig. 1. the inner edge of reflector 14 being fitted thereon. The back surface of the flange 13" isconical. and the reflector at its center is correspondingly shaped to receive the flange; so that the forward surface of the flange is flush with the inner reflector surface. Tube 13 is screwthreaded and is screw-threadedly engaged by Standard head 15. Between standard 15 and reflector 1-1 I place loose flange 1G. By screwing tube 13 tightly into the standard head. the reflector is held back tightly against the flange 16 and the flange is held between the reflector and the forward end of head 15. Around tube 13 I provide a wide shallow groove 13C in which set screw 17 engages. Screwing down on set screw 17 presses one of the split pieces down on socket 1() and thereby holds socket 1H tightly in adjusted position. For 'focusing adjustment the set screw is loosened and socket 10 may be moved forward or backward. thus moving the light with relation to the reflector 14. The set screw 17 also sets tube 13 in the head. preventing it from becoming unsecured.

In the form shown in Figs. 3 and 4 I extend the split part of the tube. as shown at 20. The extended part is taper threaded. Set nut 21 is also taper threaded and screw threadcdly fits over the split end and tightening on this nut therefore presses the split end tightly around socket 10. Nut 21 may also serve as a lock nut. in that it may abut standard head 15 and hold the tube from unscrewing from the standard.

The remainder of the construction in this form is the same as that shown in Fig. 1. with the exception that no set screw is needed and that flange 16 is partly screwthreaded as shown at 16, the flange 16 in this case being screwed on the tube 13.

From the foregoing it will be seen that my invention comprises a sightly. simple and efficient device to hohl a reflector and a lamp socket for a spotlight; one that may be easily and cheaply manufactured. and easily assembled and adjusted.

lhile I have here described my preferred form of invention in specific detail I have done so for the purpose of making it clearly understood and not for the purpose of limiting the invention to the particular things here detailed, such modifications as come within the scope of the following claims beinO within the purview of my invention.

Iaving described a preferred form of my invention, I claim:

l. In a device of the class described, a standard having, a bore therein, a lamp socket in said bore, a tube around said socket,` said tube being flanged at one end and longitudinally slit at the other end, said tube being formed with a circumferential groove, a reflector held by said flange, a flange around said tube and against the outer face of the reflector, the tube being screw-threaded into said bore, and the flange around the tube being held between the reflector and the standard, and means passing through said standard and projecting into said groove in the tube serving to compress the slit part of the tube against the lamp socket and to hold the tube against unser-ewing from the standard.

2. In a device of the character described,y

a standard, a lamp holding socket, a tube flanged at one end and longitudinally slit at the other end, a reflector held by said flange, a loose flange around said tube and against the reflector, the tube being screw threaded into the standard and the flange being held between the reflector and the standard, and means passing through the standard and serving to compress the slit part of the tube laterally against the lamp socket and to hold the tube within the standard.

In a device of the character described,

a standard, a lamp holding socket, a tube flz'tnged at one end and longitudinally slit at the other end, a reflector held by said flange, a loose flange around said tube and against the reflector, the tube being screw threaded into the standard and the flange being held between the reflector and the standard, and means to compress the slit part of the tube laterally against the lamp socket, said means 'embodying a member which also sets the tube against unscrewing from the standard.

l. In a spotlight, a standard having a screw threaded head adapted to hold a lamp socket, a screw threaded tube surrounding the socket and screwing into the head, one end of said tube being split and a flange on the other end thereof, a reflector fitting against said flange, and a reinforcing flange fitting around the tube and against the reflector', the reinforcing flange abutting the head, and means serving both to tightly hold the split part of the tube around said lamp holding socket and to prevent the tube from unscrewing from the standart.

5. In a device of the character described, a lamp holding socket, a flanged tube having coinpressible slit portions surrounding said socket, a reflector held by said flange, a headed standard around said tube, and means serving` both to compress the slit portion of said tube tightly on the lamp socket and to hold the standard tightlyin position upon said tube.

In witness that I claim the foregoing I have hereunto subscribed my name this llth day of October, 1919.

EARL I-I. HOWARD. lVitness:

VIRGINIA BERINGER.

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