Light casing
United States Patent 2201044

My invention relates to improvements in electric light casing particularly to be used in connection with an electric light bulb, socket and wiring. , The primary object in my invention is to construct a flexible light casing, adapted to exclude water and dust from the interior of said casing...

Langdon, Jesse D.
Application Number:
Publication Date:
Filing Date:
Langdon, Jesse D.
Primary Class:
Other Classes:
362/363, 439/672
International Classes:
F21S8/10; F21V17/00; H01R33/00
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My invention relates to improvements in electric light casing particularly to be used in connection with an electric light bulb, socket and wiring.

, The primary object in my invention is to construct a flexible light casing, adapted to exclude water and dust from the interior of said casing and the electric connections therein.

Another object in my invention is to provide convenient means in combination with a lens bezel and recess whereby a lens inserted into said recess may be inserted or removed from said recess.

Another object of my invention is to provide a flexible light casing with a lens retaining bezel of minimum thickness, capable of maximum tension, to hug the flange of a light lens to exclude water or dust from entering said light casing between said lens and said bezel.

.o A still further object in my invention is to provide wire passages for circuit connections and means in conjunction with said passages to seal the same around said wires against the ingress of dust or water into said casing.

i A still further object in my invention is to provide a one piece, flexible light casing having therein a space to allow for movement of an electric light bulb contact wherein circuit connections may be laterally flexed.

Other and further objects will appear as the descriptive matter proceeds, as set forth by the following specification.

These objects are attained by the use of the structure and mechanism illustrated in the ac, companying drawing, which are used for the purpose of illustration only, and do not confine the invention to the exact structure shown, which may be changed within the scope of the claims.

Fig. 1 is a longitudinal section of the flexible light casing.

Fig. 2 is a plan view from the lens side.

Fig. 3 is a longitudinal side elevation showing the flexible light casing flexed for insertion and removal of the lens or electric bulb.

Fig. 4 is a detail of metal bracket.

Similar parts in the drawing are referred to by similar numerals throughout.

The flexible light casing assembly comprises preferably a metal bracket I molded into the body Sof flexible material of said light casing, or said bracket I may be molded of the same material as the casing. A strap portion 2 is integral with socket and lens casing portion 3 forming a protuberance at one side of said casing, preferably Smade of one piece of deformable substance such as medium soft rubber to form the body of said easing.

The structure shown has additional advantages making it possible for the light beam as at A to be adjusted beyond the flat face of strap 2 and bezel 14, because of the depth of the recess in the socket and lens casing, into which a metal socket 4 is inserted. Socket 4 has a ground wire 8 connected therewith, said ground wire 8 together with live wire 7 comprising circuit completing connections, together with insulating washer 5 and metal center therein contacting the metal portion of bulb 12.

Ground wire packing tit 10 and live wire packing tit 1t are both tapered to a feather 16 edge and are sufficiently long to provide against kinking of wires 1 and 8 external to the light casing, also sealing against the ingress of water or dust, due to the passages for said wires being molded of smaller diameter, thus exerting a tension around said wires 7 and 8.

The globe of lens 13 is flanged and inserted in the recess underneath the flat face rubber bezel 14, which is molded level with the face of light casing as at 2 and 14, to provide clearance for the body of the lens 13 beyond the face of the casing as at 2-14 and still have a maximum pressure against the wall of the lens 13 above the flange of said lens 13.

A further advantage of the flat face of the body as at 2 and the bezel 14 is a form providing a straight parting line for a production mold, said parting line being in line with the face of the casing. This form eliminates the necessity for a recess in both sides of the mold, facilitating the loading of the mold and the withdrawing of the finished product from the mold.

This construction serves to produce a maximun tension around globe or lens 13 above the flange thereof, because the entire proximal portion of bezel 14 against lens 13 is backed by the full section of the structure along a plane as of 2 and 14. If the bezel 14 were raised beyond the level of the face of strap as at 2 there would be an increased flexibility, as bezel 14 would be a bead surrounding said lens 13, which would tend to obstruct the lateral diffusion of light from beam center A as bezel 14 would necessarily have to be heavier in order to exert the same tension as that provided by the structure shown.

A silver reflecting surface is provided at 17 to increase the intensity of beam A.

The recess in socket and lens casing 3 is of sufficient length to allow for the adjustment of 5r the metal light bulb socket 4 to and fro to increase or decrease clearance of beam A beyond the face of light casing as at the plane of 2 and 14.

The lens 13 or bulb 12 may be conveniently inserted or removed as illustrated by Fig. 3.

The strap portion is of sufficient length to provide a leverage to flex the bezel 14 away from lens 13, thereby enabling said lens 13 to be slid and lifted in and out of casing and bulb 12 may thus be conveniently removed or replaced.

The bracket as of Fig. 4 is provided with a hole I6-A to permit the molding of the lug 16 therethrough in order to anchor bracket I in the rubber material of the light casing.

A tension lug 18 is extended inside the end of the recess, socket and lens casing 3, to provide tension means to take the place or supplement spring 6 against insulating washer and contact 5. Having described my invention I therefore claim: 1. A light casing comprising a resilient body formed with a flat front face and having a lens recess in said flat face, a bracket projecting from said flat face and integral with said body, the rear of said body having a rearwardly extending protuberance thereon integral with the body, a socket cavity in said protuberance opening in the front of said body and with the rear of said socket cavity located within the protuberance, the flat face surrounding said lens recess being formed to provide a bezel for retaining a lens in said lens recess, said bezel being adapted to be retracted from one side of a lens inserted in said lens recess by flexing said casing body with respect to said bracket within the elastic limits of the material of the casing. 2. An electric lamp comprising a resilient light casing having a flat face at one side, an oppositely disposed face having a protuberance thereon, a lens recess disposed below the level of said flat face, the rim of said recess forming a bezel level with said flat face, said casing having a cavity in alignment with said lens recess and extending into said protuberance, a lens held in place in said recess by said bezel, a socket in said cavity, an electric light bulb in said socket, circuit completing connections in said socket and including electrical contact elements, and a resilient tension lug within said cavity and integral with said light casing, and pressing at least one of the contact elements toward the light bulb. JESSE D. LANGDON.