US2278734A

US2278734A - Lamp

Info

Publication number: US2278734A
Application number: US341873A
Authority: US
Inventors: Leslie K Perry
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-06-22
Filing date: 1940-06-22
Publication date: 1942-04-07
Anticipated expiration: 1959-04-07

Description

April 7, 1942. PERRY 2, 3, 3

LAMP Q Filed June 22, 1940 INVENTOR Le-rue K. DE'QQ) V ATTORNEY5 Patented Apr. 7, 194-2 umrso smres NT OFFICE 2 Claims.

This invention relates generally to lighting systems, and more particularly to lamps which utilize gas as a source of illumination.

An object of the invention is to provide a lamp particularly adapted, although not necessarily, for use in conjunction with a portable camp stove as a source of illumination during cooking operations, and in a manner enabling the lamp to be applied to a stove of conventional design with but negligible modification in the construction thereof.

Another object of the invention is to provide a lamp of the above described character which can be readily packed in the case of the stove when not in use, and which is highly emcient in using for illuminating purposes, the gas employed for cooking.

A further object of the invention is to provide a gas lamp which is of simple and compact construction, is inexpensive to manufacture, and can be supplied as an accessory as well as standard equipment of a camp stove.

With these and other objects in view, the invention resides in the combinations, arrangements and functional relationships of elements as set forth in the following specification and particularly pointed out in the appended claims.

In the accompanying drawing:

Figure 1 is a perspective of a camp stove with the lamp embodying this invention applied to the stove;

Figure 2 is an enlarged view of the lamp in front elevation and partly in section;

Figure 3 is a view of the lamp in side elevation and partly in section;

Figure 4 is a detail sectional view of supply piping and control valve of the lamp;

Figure 5 is a fragmentary plan view of the Figure 6 is a sectional view taken on the line 6-6 of Figure 4.

Referring specifically to the drawing, the 'invention is shown associated with a camp stove composed of a metal case In having a hinged cover H, and supporting beneath a hinged grid l2 a two-burner unit i3, with the master burner M of which is associated a mixing chamber l5 to which preheated fuel such as gasoline is supplied through a'generator tube Hi from a pressure fuel tank I! under the control of generator and preheater valves l8 and I9, respectively, all of which will be understood by those familiar with the art.

The lamp embodying this invention comprises a metal housing 20 which is provided with a front opening closed by a door '2 hinged at 22 on the housing and adapted to be latched closed by spring tongues 23 on the door frictionally engaging projections 24 on the ends of the hous- The bottom of the housing is open and is adapted to be spanned by a glass panel 25 slida-ble in guideways 25a in the housing so as to be removable for cleaning when the door 2| is opened.

The top wall 26 of the housing is provided with a central opening through which projects a tubular extension 28 of a combined mantle holder and gas preheater 29 having a preheater chamber 36 and secured to the housing by screws 3|.

I The extension 28 constitutes a gas outlet from the chamber and is provided externally with an annular groove 28a in which a conventional fabric gas mantle 32 is adapted to be tied so as to be suspended from the extension in the housing.

The chamber 39 is provided with heat retaining ribs 33 and with a gas inlet 34 to which is connected the elbowed upper end of a gas supply pipe 35, the lower end of which is screwed into the body of a control valve 36. From the body of this valve extends a horizontal section 31 of the gas supply pipe which is connected to the mixing chamber l5 so as to receive gas therefrom. From Figures 4 and 6, it will benoted that the end of the pipe section 31 which is connected to the mixing chamber is provided with a baffie 38 projecting into the passageway 39 of the chamber so as to divert a portion of the generated gas to the supply pipe 35 for the lamp.

The control valve 36 includes a ported closure plate 46 reciprocably mounted in the body of the valve and operable by a rod 4| extending through an opening in the front of the case l0 and having a hooked end 42 detachably received in a keyhole opening in the plate 46 so as to permit removal of the rod when desired.

Air for combustion is supplied to the housing 21! through ports 45 in the sides thereof, communicating with manifold 46 secured to said sides and having intake perforations 41 which construction obviates adverse effect of excessive draft or wind upon the lamp, or effect of steam from cooking.

Air and exhaust gases can discharge from the housing through ports 48 in the top wall 26 thereof around the tubular extension 28 into an annular heating space 49 surrounding the preheater 29 and formed by an inverted cup 50 secured in place by a screw 5| and nuts 52; The cup 50 is provided with ports 53 through which the air and gases can finally discharge into the atmosphere. In the operation of the invention and assuming that the gas stove is in operation and the valve plate 40 is open so as to supply gas to the mantle 32, the latter when burning will provide adequate illumination for the stove and immediate surroundings.

By the natural draft created in the housing 20 the heated air and exhaust gases will be carried ofi through the heating space 49 to the atmosphere, and will, during passage through the space, heat the chamber 30 to insure the delivery of a highly combustible and eflflcient mixture of the gas and air from the mixing chamber l5 to the mantle 32.

The pipe 35 can be unscrewed from the body of the valve 36, and the lamp stored in the case for carrying purposes What is claimed is:

1. A lamp of the class described comprising: a housing having air inlets, a top opening and air outlets around said opening; a preheater secured on the housing and having a laterally disposed gas inlet and a depending tubular extension projecting through said opening and constituting an outlet through which to supply gas to a mantle supported on said extension; and an inverted cup having outlet ports therein and enclosing said preheater to provide a heating space therebetween through which residual gas discharging from the housing through its outlets, can circulate to effect heating of the preheater before the air is discharged from said space through the cup outlets, and a vertical gas supply tube having an upper elbow portion extending through said cup, across said space, and connected to said gas inlet of the preheater to support the lamp in an elevated position.

2. A lamp of the class described comprising: a housing having air inlets at opposite sides, a top opening and a series of air outlets around said opening; a light transmitting panel slidably mounted in said housing to spanthe bottom thereof; a door closing the front of said housing and confining said panel against displacement; a preheater secured on top of the housing within said air outlets and having a gas inlet and a depending tubular extension projecting through said opening and constituting an outlet through which to supply gas to a mantle supported on said extension; and means co-acting with the preheater to define an annular space around the latter, through which residual gas discharged from the housing through its outlets, can circulate to efiect heating of the preheater before discharge of the air to atmosphere.

LESLIE K. PERRY.