US1027196A - Lamp. - Google Patents

Description

"J. H. GEORGE.

Patnted, Ma 21,

ATTORNEYS I UNITED sT TEs RATION OF CONNECTICUT.

PATENT ornron.

'10 HAWTHORNE MANU- CONNECTICUT, A CORPO- LAMP.

To alt whom 'it may concern:

Be it known that I, J OHN H. GEORGE, a subject of the King of Great Britain, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Lamps, of which the following is a specification.

This invention relates to lamps and par ticularly to lamps of the type commonly employed on automobiles, motorcycles and the like.

The object of the invention is to eflect certain improvements in the construction of lamps of this general type with respect particularly to the manner of mounting the reflector within the casing of the lamp.

The breakage of the reflectors of lamps has heretofore been a source of frequent annoyance to users of motorcycles, automobiles and the like. Much of this breakage has been due to the expansion and cont-ractionof the reflector as the latter is heated up by the flame of the lamp and cools after the flame is cut off, the mounting of the reflector being such that this expansion and contraction have subjected the reflector to excessive strain. This invention is directed primarily to mounting the reflector in such a manner as to materially reduce the danger of breakage resulting from strains of this character. Furthermore, in accordance with the invention this object is attained in a construction possessing the desirable characteristics of ready removability of the reflector, marked simplicity and low manufacturing cost. a

The invention will be described in connection with the accompanying drawings, which show the preferred embodiment thereof and in which Figure 1 is a side elevation of a lamp having my improved form of reflector support, the view being broken away and sectioned in part, Fig. 2 is a back view of the reflector, and Fig. 3 is a central vertical section showing the parts on an enlarged scale- Referring to these drawings, Fig.1shows a lamp of a form now in common use, this being merely typical of the type of lamps to which the invention is specially applicable. The lamp has a body 1 cylindrical in its general form and closed at the rear by a back 5, these parts being preferably Specification of Letters Patent.

Application filed March 16, 1911.

through this opening.

PatentedMay 21, 1912.

Serial No. 614,783.

made of sheet-brass. is closed by a hinged door 2 having a suitable lens therein. lVithin the body is a burner adapted to burn acetylene gas, the latter being supplied to the burner by a tube 3. At the sides of the body are brackets 1 adapted to coact with the support'for the lamp in the usual manner. The reflector 6 is mounted within the rear portion of the body of the lamp; it is preferably of the usual form, having its front and rear surfaces curved about different centers.

The front of the body I will now describe my improved means for mounting the reflector and point out the advantages obtained thereby.

The reflector 6 is provided with a backing 7 of sheet-metal. This backing is formed from a circular piece of metal which is spun over the reflector so that it lies flat against the back of the reflector withits edge 8 turned over the edge of t-hereflector forming a flange whichcholds the backing and reflector together securely. ralityof points about the center of the backing, the metal thereofis cut' as shown in Fig. 2 and the cut portions are turned the backing. These tangs are utilized to secure to the backing 7 a threaded collar or sleeve 10. This collar is shown as fitting snugly within the four tangs 9 and interiorly threaded, and it is securely held by the tangs, as by being soldered thereto.

The back 5 of the lamp has a circular opening cut in the center thereof and an exteriorly threaded member 11 projects Member 11 is rigidly secured to the back 5; to facilitate this, it is provided wi h an enlarged head 12 which may be soldered to the back 5. The portion of the member 11 projecting within the body of the lamp is threaded and of -a size to be received in the collar 10. With the parts thus constructed, the reflector is mounted in position by turning the reflector so that the collar 10 screws upon the threaded end of member 11; With the parts assembled in this manner, seen that the reflector is supported upon the casing of the lamp at a point near the center of the reflector rather than around the periphery thereof. Also, it will be notedthat the reflector is spaced from the casing near the periphery so that there may be free circulation of air around the reflec- At a pluoutwardly to form tangs 9 integral with.

it will be tor and therefore unequal expansion and contraction is less apt to occur. The reflector may be conveniently and quickly removed Whenever such removal becomes desirable for inspection or cleaning. F urthermore, but a small number of parts are employed and these may be manufactured and assembled at small cost.

Having now described my invention, What I claim as new therein and desire to secure by Letters Patent is as f0lloWs:-

In a lamp, the combination of a casing, a reflector therein, a backing for the reflector formed from a single piece of sheet-metal and having its edge turned over the edge of the reflector, integral projections on said backing near the center thereof, a threaded member secured to said projections, and a threaded member projecting through an opening in the back of the casing and secured to the casing, said threaded members being adapted for coaction in removably mounting the reflector upon the back of the casing, and said member secured to the back of the casing forming the sole support for.

the reflector, substantially as set forth.

This specification signed and witnessed this 7th day of March, 1911.

JOHN H. GEORGE. -Witnesses:

ELLSWORTH A. HAWTHORNE, ARTHUR D. SULLIVAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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