US2404753A - Emergency lamp - Google Patents

Description

July 23, 1946. E. SIEMERS EMERGENCY LAMP Filed March 6, 1944 W, J /////A IN VEN TOR. E20 5537726715,

Patented July 23, 1946 UNITED STATES PATENT OFFICE EMERGENCY LAMP Erie Siemcrs, Kalamazoo, Mich, assignor, by

mesne assignments, to Lacey-VVebber C0,, Kal- ..,amazoo,.Mich.,,a corporation of Michigan Application March 6, 1944, Serial No, 525,171

1 Claim. (Cl. 240-54.)

like, on automobiles, tractors, motor boats and other means of transportation equipped to produce a current of siX to eight volts.

An object of the invention is to provide a compact, light Weight lamp constructed entirely of plactic as regards the casing for the lamp, and which will be economical to manufacture.

A further object of the invention is to provide an emergency lamp of the character described which will incorporate a plastic lens for concentrating the light rays emitted at the end of the lamp so that the same may be used as a reading light or for similar purposes where a small concentrated beam of light is desired.

Another object is to provide a small compact lamp which may be carried in the glove compartment of an automobile, for example, having electrical connection with an suitable outlet or connecting directly with the storage battery of the automobile. The general utility of the present lamp is materially increased as a result of its plastic construction, which renders the lamp practically unbreakable and in addition deterioration by corrosion is completely eliminated.

With these and various other objects in View, the invention may consist of certain novel features of construction and operation as will be more fully described and particularly pointed out in the specification, drawing and claim appended hereto.

In the drawing which illustrates an embodiment of the invention and wherein like reference characters are used to designate like parts Figure 1 is an elevational view of the emergency lamp with magnifying lens constructed in accordance with the invention;

Figure 2 is a vertical sectional view of the lamp shown, in Figure l;' and Figure 3 is a transverse sectional view taken substantially along line 3-3 of Figure 1.

In the drawing the emergency lamp of the invention includes base portion l9 constructed of plastic such as polystyrene or any other suitable synthetic resin. The base portion E9 is cylindrical in shape, having a lower part I l of reduced diameter and an. upper part l2 of somewhat greater diameter, and which is provided with a, circular recess is in the top surface I for receiving the shield of the lamp. Said base portion H) has a central bore extending from end to end of the same: i The. upper portion of the bore is adapted to receive the lamp socket It. The wires l1 electrically connect with the base of said lamp socket and said wires extend through the lower portion of the bore.

The lamp socket I5 is of the type having bayonet slots ill for reeciving the electric light bulb 2B. The shield for the bulb 2i] essentially consists of a cylindrical perforated member 2!. Said member is releasably secured to base portion Ii] by inserting the same in the recess l3. The parts therefore have interfitting relation and the shield is securely held to the base portion although it is relatively easy to remove the same should it be necessary to clean the light bulb or to replace a burned out bulb with a new one.

In accordance with the invention the plastic magnifying lens 22 is provided as a cap for the cylindrical member 2!, the same having interfitting relation therewith as at 23. It is preferred that the lens 22 be fixedly secured to the member 2| so as to eliminate any possibility of losing the lens and further, it is advantageous to have an integral one-piece shield for the lamp. The magnifying lens can be fitted to member 2 l, as shown in Figure 2, and then adhesively secured, or the lens may be molded integral with the cylindrical member. For visibility purposes the member 2| is formed of a transparent synthetic resin such as cellulose acetate and the lens 22 is preferably constructed of the same material. However, other plastics in addition to cellulose acetate may be used for the shield. The material comprising the lens 22 should be transparent but the member 2! may be either transparent or translucent. To permit the escape of heat from the bulb 2 member 2| is provided with a plurality of openings 24 arranged in an upper horizontal row and imilar openings 25 forming a lower horizontal row.

The emergency lamp of the invention is economical to manufacture since the structure has been simplified to include only three parts, namely, the base portion III, the electric socket It, and bulb supported thereby, and the shield 2|. Although the device has been described as an emergency lamp, this does not necessarily restrict its use since it will have general utility in connection with the operation of automobiles, tractors, motor boats or other means of transportation equipped to produce a current of six to eight volts required for the bulb 2B. The lamp may be used to assist motorists at night in case of a tire change, or an accident, or for reading maps at night. The lamp should also prove of great Therefore the illumination produced by 'thebulb 20 is maximum for the size of the bulb and the same is distributed equally around the member 2 I. through the lens 22 are concentrated to produce On the other hand, the light rays passing a beam of light at the end of the lamp. This dual details of construction of the particular embodi ment thereof illustrated by the drawing as various other forms of the device will of course be apparent to those skilled in the art without de- 4 parting from the spirit of the invention or the scope of the claim.

What is claimed is:

In an electric lamp of the portable type, in combination, a substantially cylindrical base portion of synthetic resin providing a handle and having a bore extending axially from end to end, an electric lamp socket releasably positioned within said bore at the end opposite the handle, an electric bulb releasably supported by the socket so as to project from this end of the base portion, a shield for said bulb including a cylindrical member of light-emitting material, said base portion having a v,cylindrkial groove in the socket end thereof concentric with said bore for receiving one end of said'cylindrical member, whereby the shield encloses the bulb and forms a protective housing therefor, and a cap forsaid cylindrical member in the form of a magnifying lens fixed to the open end of said member and closing said end.

' ERIC SIEMERS.

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