US1985517A - Oil lantern - Google Patents

Description

Dec. 25, 1934. A. J. PERKINS ET AL 1,985,517

OIL LANTERN Filed Nov. 29, 1933 2 Sheets-Sheet 2 5N m k Y TRC :N. NP E R E W w M AFB Patented Dec. '25, 1934 U N [TE 1), STAT s "PATENT 1 err is E Y i 1,985,517 Y I OIL LANTERN Alfred J Perkins. and Frank Bcckman, Warsaw; N. Y., assignors to Embury Manufacturing v(30., Warsaw, N.Y., a corporation of New'York Application November 29, 1933; Serial No. 700,260 3 Claims. (01. 240-29) This invention relates to tubular oil lanterns of the cold blast type and has for its object to provide an improved dome construction which distributes the air entering the top of the lantern so that "it will not interfere with the outgoing heated air and will equalize the air pressure above and below the lantern burner to prevent the burner flame from being extinguished no matter how strong a current of air blows against the lantern and into the top thereof.

This and other objects and attendant advantages will become more readily apparent from the detailed description of the invention which follows, reference being had to the accompany ing drawings in which Figure 1 is a front elevation of the tubular lantern equipped with the improved dome construction.

Figure 2 is a horizontal sectional view of the lantern taken on the line 2m-2a: of Figure 1.

Figure 3 is a vertical sectional view of the dome of the lantern.

Figure 4 is a vertical sectional view of a portion of a modified form of the dome of the lantern.

In the several figures of the drawings like reference numerals indicate like parts.

The dome construction for tubular lanterns of the cold blast type forming the subject matter of the present invention makes it possible to provide an equalized air pressure within the globe of the lantern so that no matter how an air current strikes the lantern the burner flame will not be appreciably affected thereby and cannot cause the flame to be extinguished thereby.

ihe tubular lantern illustrated in the figures of the drawings is that of a well known cold blast type in which the dome l is supported by the tubes 2 and 3 on the font 4. v The tubes 2 and 3 also serve as ducts to carry the cold air which enters the dome to a point below the burner 5 and supply the burner with part of the air necessary for the proper combustion of the oil by the burner.

In the cold blast type of tubular lanterns most of the cold air fed to the burner was heretofore I admitted at a point remote from the open top thereof as for example thru the intake 6 surrounding the bottom of the dome 1 and the flue in the center of the dome terminating in the open top thereof was used solely for the outlet of the heated air and the products of combustion from within the globe of the lantern. When therefore a strong current of air entered the open top of the dome, it opposed the escape of the 'de flectedby the flanges into the dome.

heated air and the products'of combustion and either extinguished theburner flame entirely or interfered with the eflicient burning of it.

This has been eliminated in the present construction of the dome 1 by mounting within the central flue '7 a second'flue '8 centrally thereof and providing between these two flues a cylindrical chamber 9 which is closed at the bottom and open at the top. The outer wall of this chamber provided by the flue '7. is perforated by suitable openings 10, 10 so that air entering the chamber thru the open top of the flue will escape from the chamber and enter the inside of the dome 1 above the baffle 11. This baffle divides the dome into an upper and lower chamber intermediate the inlets of the tubes 2 and 3 so that cold air entering the top and bottom of the dome will be directed into these inlets of the tubes 2 and 3.

The center flue 8 thus serves as the outlet for the heated air and products of combustion and directs them centrally against the under side of the cap 12 where they are deflected to escape from under the cap thru the side openings 13, 13. A

cold air current entering the side openings 13 on the other hand will be divided by the central flue 8 depending on the updraft in the flue so that part of the cold air will be deflected into the chamber 9 and out thru the openings 10 into the inside of the dome and the pipes 2 and 3 and whatever air does enter the central flue cannot create a strong enough downdraft in opposition to the updraft in the globe to extinguish the burner flame or at least affect the efficient burning of it. The air which is deflected by the central flue 8 will join the air entering the bottom of the dome at 6 in the pipes2 and 3 and will enter the globe at the bottom so that its pressure will oppose that of the pressure of the air entering the top of the globe thru the central duct 8 and thus keep the pressure of the air surrounding the burner equalized at all times.

In the construction of the dome illustrated in Figure 4 the inner flue 8 is replaced by a series of deflecting flanges 14, 14 which are struck inwardly from the wall of the flue 7 so as to provide the openings 15, k 15 thru which the air is The flanges are bent inwardly at an angle so as to provide a restricted substantially cone shaped passage thru the center of the flue 7.

We claim:

1. A dome for lanterns having an open bottom, a flue extending thru said dome and having an opening in the wall thereof leading into the upper portion of said dome, an outlet in the side of the dome, a partition in said dome between said flue and the wall of said dome intermediate the outlet thereof providing an air chamber above and below said partition arranged to have the opening in the wall of said flue provide an air inlet in the upper chamber; and deflecting means within said flue to deflect the air entering the top of the flue into the upper air chamber of said dome and leave said dome thru the outlet thereof jointly with the air entering the open bottom of the lower air chamber of said dome and deflected into said outlet by said partition so as not to interfere with the flow of the air entering the outlet from the upper air chamber of said dome.

2. A dome for tubular lanterns having an open 1 bottom and outlets leading into the tubes of the lantern in the side thereof, a flue projecting thru said dome and having perforations in the wall thereof within said dome, a bafile intermediate the top and bottom of the outlets in said dome between said flue and the wall of said dome to provide an upper and a lower chamber with joint outlets in the wall of the dome into the tubes, a second smaller flue provided within said first flue and conneotedto said first flue with one end thereof so as to extend over the perforated portion of said first flue and direct the passage of air entering the bottom of said first flue past the perforations therein and out thru the top thereof, and direct air entering the top of the first flue thru the perforations thereof into the upper chamber of said dome to jointly enter the tubes of the lantern thru the outlets in the side of the dome with the air from the lower chamberentering the open bottom of the dome.

3. A dome for lanterns supported by a pair of tubes with outlets in the side of the dome leading into said tubes, said dome having an open bottom, a flue extending thru said dome and having perforations in the wall thereof leading into the upper portion of said dome, a partition within said dome intermediate the top and bottom .of said outlets and between the wall of said

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