US1403668A - Spotlight - Google Patents

Description

C. BRAMIVHNG.

SPOTLIGHT.

APPLICATION FILED JAN-3,1921.

1,403,668. Patented Jan. 17, 1922.

if II 1 ar'Z ,Brammz'n UNITED STATES PATENT OFFICE.

CARL BRAMMING, OF CHICAGO, ILLINOIS, ASSIGNOR TO ACCESSORIES MANUFACTUR- ING COMPANY, A CORPORATION OF ILLINOIS.

SPOTLIGHT.

To all whom it may concern:

Be it known that I, CARL BRAMMING, a citizen of the United States, and resident of Chicago, county of Cook, and State of 1111- nois, have invented certain new and useful Improvements in Spotlights, of which the following is a specification and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to spot lights, and has as an object the provision of a spot light which may have its handle end free from wires which, when present, interfere with the manipulation of the switch and the lamp. A further object is the provision of a spot light provided with a simple and novel form of switch.

An illustrative embodiment of the invention is shown in the accompanying draw ings, in which Fig. 1 is a plan view, partly broken away, showing a wind shield standard in section;

Fig. 2 is a side view partly in vertical section, on the line 2-2 of Fig. 1;

Figs. 3 and 4 are vertical transverse sections on the lines 3-3 and 44, respectively, of Fig. 2; and

Fig. 5 is a perspective view of a spring plug.

The body of the lamp is formed of a tube 10, one end of which forms a socket of the usual type for the bulb 11. The tube 10 has portions 12, 13, of its material indented to provide inward projections to coact with grooves 14 in double poled spring plugs 15,

25, of a usual form. The projections 12, 13, preserve the angular relation of the poles 16, 17, of the plugs, and by contact with the ends of the grooves 14 determine the axial location of the plugs.

The tube 10 may be supported in a sleeve 18, having a tube 19 extending from one side to a ball 20 which may coact with a socket 39 to provide a mounting upon which the lamp may be moved to throw the light in the desired direction. The sleeve 18 is shown as carrying a reflector 40, having a transparent closure 41 mounted in its opening. A set-screw 42, carried by the sleeve 18, may be screwed in against the tube 10 to preserve the adjusted relation between the tubes and therefore between the lamp 11 Specification of Letters Patent.

Application filed January 3, 1921.

Patented Jan. 17, 1922. Serial No. 434,673.

and the reflector 40. By loosening the setscrew 42 and moving the tube 10- in the sleeve 18, the lamp may be adjusted to the focal point of the reflector 40.

A leading in opening 43 may be formed in tube 10, communicating with the interior of tube 19, to permit passage of the duplex cable 21 comprising wires 22, 23, one of which is attached to one of the plugs, as 15, and the other to the other plug, as 25. The wiring of the lamp is completed by a piece of wire 24 connecting the two plugs 15 and 25.

A switch for the lamp circuit may be provided by a bridging member 26 embedded in insulation 27 .and having its ends exposed, as at 28, 29, for contact with the two spring pressed poles 16, 17 of the plug 25. To operate the switch the cap 30, carrying the switch, is merely rotated upon the tube 10 to bring the faces 28, 29, into or out of bridging relation to terminals 16, 17. The insulating element 27 may be preserved in location by providing one ormore recesses 31 co-acting with inward projections 32, which may be provided by denting the cap 30 in the proper place, as at 33.

The cap 30 may be retained against pressure of the spring terminals 16, 17, and held in open or closed position by means of an inwardly projecting stud 34, coacting with a slot 35 in the tube 10. A straight portion of the slot, as 36, permits of putting on the cap 30, thus compressing the springs behind terminals 16, 17. A notch 37 receives the stud 34 upon slight rotation of the cap, in

position of the switch to the other involves compression of the springs behind terminals 16 and 17 as the stud rides over the V cam of the slot. This fact prevents the switch from jarring open or closed.

A lamp housing and reflector 39 of any usual or desired form, carrying the closure 41, may be secured to the. tube 10. Many minor changes may be made in the physical embodiment of the invention without departing from its spirit.

I claim as my invention 1. A spot light comprising, incombination, a tube having a longitudinal slot opening to its end and a transverse slot opening into said longitudinal slot, a double, pole spring plug seated in the tube, a cap fitting over one end of said tube, a bridging switch element carried in said cap adapted to be rotated into or out of bridging relation to the terminal of said plu' and an inwardly projecting stud in sai cap adapted to coact with said slots. I

2. A spot light comprising, in combination, a tube having a circumferential slot having notches at intervals therein, a double poled spring lug seated in the end of the tube, a rotatable cap adapted to fit over the end of said tube and having an inwardly projecting stud adapted to coact with the notches, a switch element carried in said cap and adapted to be maintained in or out of bridging relation to the poles of said plug according to the notch with which said stud is engaged.

3. A spot light comprising, in combination, a tube, a lamp socket at one end of the tube, opposed double pole spring plugs in said tube, one plug coacting with said socket, a cap on the end of said tube opposite the socket, a bridging switch element in said cap adapted to be rotated into or out of bridging relation to the terminals of one of having notches at intervals therein and having a second slot connecting the circumferential slot to the end of the tube, a double poled spring plug'seated in the end of the tube, a rotatable cap adapted to fit over the end of said tube having an inwardly projecting stud adapted to coact with said slots and engage one of said notches, a switch element carried in said cap and adapted to be maintained in or out of bridging relation to the poles of said plug according to the notch with which said stud is engaged.

5. The spot light comprising, in combination, an integral tube, a lamp socket at one end of the tube, opposed double pole spring plugs in said tube, one plug coacting with said socket, an aperture in said tube intermediate said spring plugs, a cap on the end of said tube opposite the socket, a bridging switch element in said cap adapted to be rotated into or out of bridging relation to the terminals of one of said plugs, a pair of leading-in wires entering said tube through the said aperture, one being connected to a terminal of each plug and a conductor directly connecting the two remaining terminals of said plugs.

CARL BRAMMING.

Images