US2841694A

US2841694A - Portable gas lantern

Info

Publication number: US2841694A
Application number: US496157A
Authority: US
Inventors: Milo E Webster
Original assignee: Otto Bernz Co Inc
Current assignee: Otto Bernz Co Inc
Priority date: 1955-03-23
Filing date: 1955-03-23
Publication date: 1958-07-01
Anticipated expiration: 1975-07-01

Description

July 1, 1958 M. E. WEBSTER 2,841,694

PORTABLE GAS'LANTERN Filed Maroh 25, 1955 2 Sheets-Sheet 1 INVENTOR M/LO E WEBSTER ATTORNEY y 1 1958 M. E. WEBSTER 2,8 1,694

PORTABLE GAS LANTERN Filed March 23, 1955 2 sheets-Shasta IA /5 1 l4 I 1 7 u! i a INVENTOR MILO E. WEBSTER.

6:47A PM? ATTORNEY:

' tet fiice 2,841,694 Patented July 1, 1958 PORTABLE GAS LANTERN Milo E. Webster, Rochester, N. Y., assignor to Otto Bernz Co., Inc., Rochester, N. Y., a corporation of New York Application March 23, 1955, Serial No. 496,157

4 Claims. (Cl. 240-38) This invention relates to a portable gas lantern.

, One object of this invention is a portable mantle-type lantern which will light instantly, which is smokeless and odorless, and which will give an extremely bright, adjustable light while not requiring the filling, pumping or priming operations previously associated with mantletype lanterns.

This and still further objects will become apparent from the following description read in conjunction with the drawings in which:

Fig. l is a side view of an embodiment of a mantletype gas lantern in accordance with the invention;

Fig. 2 is a side elevation, partially in section, of the lantern shown in Fig. 1; and

Figv 3 is a side elevation of a portion of the lantern shown in Fig. 1 with the fuel cylinder partially removed.

The portable gas lantern in accordance with the invention is intended for use in combination with a liquefied fuel gas cylinder as, for example, a disposable liquefied propane gas cylinder. The lantern has an inclined receiver such as a cylindrical receiver for the fuel gas cylinder. A transparent lantern globe as, for example, a glass globe is mounted above the inclined receiver. A tap connection is provided for tapping the gas cylinder when the same is positioned in the receiver. A gas conduit is connected to the tapconnection and extends above the receiverand terminates in the upper portion of the globe. A mantle hanger is connected at the end of the gas conduit in the globe and a regulator valve means as, for example, a needle valve mounted in the tap connection is positioned for adjusting the quantity of gas flowing through the gas conduit from the cylinder.

Referring to the drawings, the inclined receiver 1 is mounted on the leg supports 2. The receiver as shown consists of a hollow cylinder which is open at its upper end and closed at its lower end. The receiver 1 is dimensioned in size so that a fuel gas cylinder as, for example, a liquefied propane cylinder 3 may be slipped inside it.

The fuel gas cylinder in combination with which the lantern in accordance with the invention is intended for use is preferably a disposable liquefied propane gas cylinder as, for example, the portable disposable liquefied propane gas cylinders marketed under the name Bernz- O-Matic cylinders.

A tap connection 4 is provided for tapping the cylinder 3. The tap connection 4 may be any conventional tap connection adapted for tapping the particular cylinder in connection with which the lantern is to be used. The cylinder may, for example, have a threaded collar 5 provided with a bore communicating with the interior of the cylinder. This bore may be provided with a closure valve as, for example, a conventional tire valve. The tap 4 then consists of a female screw sleeve 6 which screws over the collar 5 and which has a central hollow rod which depresses the stem of the tire valve, opening the same. The fuel in the interior of the cylinder under pressure is then free to flow through the hollow interior n A of the rod into the portion 7 of the gas conduit. The amount of gas flowing through the conduit may be regulated or shut off by means of the conventional needle valve arrangement 8. The longitudinal bore in the threaded collar 5 may be provided with an O-ring gasket which will come into gas-tight engagement with the hollow rod and the collar 5 may be screwed up tight against the gasket as, for example, a neoprene gasket 9 to insure against gas leakage.

This type of tap arrangement is, for example, described in detail in my copending application, Serial No. 43 8,400, filed June 22, 1954, now Patent No. 2,793,504.

An orifice plug or tap 10 provided with a small orifice opening 11 is positioned in the conduit 7. On the other side of the orifice 11 the air mixture holes 12 extend through the conduit. A sleeve 13 which is screwed over the threaded portion 14 may be used to adjust the amount of air which may pass from the outside through the air holes 12 into the conduit. The portion '7 of the gas conduit terminates with a male threaded flange 15. The portion of the conduit 7 with all parts connected thereto is removably connected to the remaining portion of the gas conduit 15 by means of convenional flange joint 17 and knurled screw sleeve 18 with a female thread.

The portion 7 of the conduit may be disconnected from the remaining portion 16 by merely unscrewing the knurled screw sleeve 18.

A hollow cylindrical support member 19 is attached to the receiver 1 and extends thereabove in a vertical di rection. Connected to the upper portion of the support 19 is the cylindrical pan 20. The pan 2% has the flange portion 21 which constitutes a base support for the glass lantern globe 22 of conventional construction.

Also connected to the pain 20 are two relatively thin vertical support beams 23. A crossbar 24 extends across the top of these support beams and has the screw stud 25 connected thereto. The outer edges of the crossbeam 24 are formed as female sockets 26 for receiving the lantern handle 27.

Positioned above the globe 22 and mounted on the crossbeam 24 and support beams 23 is the lantern top and ventilator 2d. The top and ventilator consists of the two shade portions 29and 30 and a cylindrical verti cal member 32 connecting these two shade portions, The cylindrical member 32 has the ventilating openings 31 and also has smaller openings 33 through which the lantern handle 27 can extend. A central axial hole is also provided in the top of the lantern top and ventilator through which screw stud 25 may extend. The ventilator 28 is held in position by means of the thumb nut 34 and is additionally held in place by the lantern. handle 27 fitting in the sockets 26. When in position, the ventilator 28 serves to maintain the globe 22 in place and acts as a conventional shade, top and ventilator for the lantern.

The remaining portion of the gas conduit 16 extends into the support 19 up through a hole in the bottom of the pan 20 and into the interior of the globe 22. In the globe 22 portion 16 of the conduit extends up along one of the supports 23 and in the upper portion of the conduit 16 is reversely bent at 35 in the form of a gooseneclc. Connected to the end of the conduit 16 is a conventional mantle hanger 36 which may, for example, consist of metal or ceramic material which may be provided with a multiple number of outlet holes through its lower surface. A mantle of conventional construction as, for example, a silk mantle may be tied around the mantle holder .36.

In order to place the mantle in position, the thumb nut 34 is unscrewed from the stud 25 and the handle 27 removed by flexing the same outwardly. The ventilator 28 is then lifted oif from the support 24 and the 3 globe 22 may then be removed by being lifted off. The mantle 37 is tied around the mantle hanger 36 in the conventional manner and burned off. The globe, ventilator and lantern handle are then replaced.

In operation the female threaded screw sleeve 18 which may be knurled about its exterior surface to facilitate gripping is unscrewed from the screw and the portion 7 of the gas conduit with the parts connected thereto including the tap arrangement 4 is removed.

The tap arrangement 4 is then screwed onto a fuel gas cylinder such as a disposable liquefied propane gas cylinder 3. This effects communication from the interior of the cylinder to the conduit 7 through the needle valve arrangement 8. With the needle valve arrangement shut, no gas can escape. The cylinder 3 is then slid into the receiver 1, as shown in Fig. 3. The female threaded screw sleeve 18 is then screwed onto the member 15 connecting the two portions 16 and 7 of the gas conduit, as shown in Figs. 1 and 2.

In order to light the lantern, the needle valve 8 is opened, allowing the passage of the pressurized fuel gas from the cylinder 3 through the portion 7 of the conduit. As the gas passes through the orifice 11, it draws air through the air holes 12, mixing this air with the gas. This mixture of fuel gas and air then passes through the remaining portion of the gas conduit 16 and out through the perforations in the lower surface of the mantle hanger 36, filling the mantle with the combustible mixture. The lantern may be lit by merely inserting a match or the like through a small opening (not shown) in the rim of the pan 20. The mantle burns with an extremely bright white light which may be adjusted by means of the needle valve 8.

In order to obtain the optimum burning mixture of air and gas for various altitude conditions or the like, the sleeve 13 may be adjusted to allow a greater or lesser quantity of air to be drawn through the air holes 12.

The lantern will light instantly, giving a smokeless and odorless bright light.

Due to the inclined position of the cylinder, as the same is held in the receiver, which should preferably be at an angle of at least 15 from the horizontal, only vapor will pass out of the cylinder and the cylinder outlet will never be in direct contact with the liquefied gas which might cause erratic operation and extinguishment of the flame.

If the cylinder were maintained in a horizontal position, the liquefied fuel gas would initially come in contact with the outlet opening, causing these disturbances. As the quantity of fuel was used up in the cylinder, the liquid level would eventually fall below the outlet from the cylinder, causing a change in the burning characteristics and requiring readjustment. Further, a shaking or jostling of the lantern could easily splash liquid particles 4 into the outlet from the cylinder and cause the extinguishment of the flame.

As contrasted to a vertical positioning of the cylinder, the arrangement in accordance with the invention is much more compact and stable.

While the invention has been described in detail with reference to the specific embodiments shown, various modifications which fall within the spirit of the invention and scope of the appended claims will become apparent to the artisan.

I claim:

1. A portable gas lantern for use in combination with a liquified fuel gas cylinder, which comprises an inclined receiver for the fuel cylinder having legs attached thereto forming a stable, self-supporting base unit, a transparent lantern globe mounted above said inclined receiver, a tap connection positioned for attachment to a fuel gas cylinder positioned in said receiver, a gas conduit connected tosaid tap connection extending above said receiver and terminating in the upper portion of said globe, a mantle hanger positioned at the end of said gas conduit in said globe, and regulator valve means positioned for adjusting the quantity of gas flowing through said gas conduit.

2. Portable gas lantern according to claim 1, in which said inclined receiver is a cylindrical receiver having its upper end open and in which said tap connection is axially positioned in front of the upper open end of said receiver.

3. Portable gas lantern according to claim 2, in which said gas conduit includes two hand detachably connected portions.

4. Portable gas lantern according to claim 1, in which said inclined receiver is a cylindrical receiver having its upper end open, and in which said tap connection is axially positioned in front of the upper open end of said receiver, including a vertical cylindrical support member mounted above said receiver, a pan mounted on top of said vertical support member, said pan defining a channel for said lantern globe, at least one vertical support beam extending from said pan vertically through said globe, and a ventilator lantern top detachably mounted to said support beam.

References Cited in the file of this patent UNITED STATES PATENTS 1,257,930 Robin Feb. 26, 1918 1,283,527 Kirschbaum Nov. 5, 1918 1,951,244 Iaedicke Mar. 13, 1934 2,008,882 Tullis July 23, 1935 2,091,857 Jaedicke Aug. 31, 1937 2,263,659 Tullis Nov. 25, 1941 V FOREIGN PATENTS 82,351 Norway Jan. 8, 1935