US1073465A - Tubular lantern. - Google Patents

Description

C. L. BETTS.

TUBULAR LANTERN.

APPLIOATION FILED SEPT. 7, 1912.

UNITED STATES PAlTENT OFFICE.

CHARLES L. BETTS, 0F BROOKLYN, NEW YORK, ASSIGNOB T0 B. E. DIETZ COMPANY,

` OF NEW YORK, N. Y.

TUBULAR LANTERN.

Specification of Letters Patent.

Patented Sept. 16, 1913.

To ail whom it `may concern:

Be it known that I, CHARLES L. Bn'r'rs, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Tubular Lanterns, of which the followin is a specification.

This invention re ates to that class of tubular lanterns in which a globe-holding chimney is arranged within the air chamber with which the upper ends of the tubes are connected, which chimney extends below this air chamber and is provided near its lower end which bears upon the globe with a row of air inlets.

The object ofthis invention is to provide the-chimney with means for increasing the inflow' of air through these openings while preventing the hot gases, which escape upwardly from the globe, from coming in contact with the chimney and overheating the same.

In the accompanying drawings: Figure 1 is an elevation, partly in section, of a tubular lantern rovided with this improve ment. Fig. 2 1s a fragmentary vertical section of the lower portion of the chimney on an enlarged scale. Fig. 3 is a vertical section showing a modified construction of the lantern top.

Like reference characters refer to like parts in the several figures.

Referring to Figs. 1 and 2, A represents the tubes, and B the upper air chamber of a tubular lantern of the cold blast type. C represents the globe. D represents the globe-holding chimney which is arranged with its upper contracted portion 10 in the lower portion of the air chamber B and is provided below that chamber with a downwardly Haring portion 11 which bears upon the globe and is provided near its lower end with an annular row of air inlet openings 12. The chimney is held down upon the globe by any suitable means, for instance, a transverse lifter shaft 13. The chimney is arranged with its upper end near the mouths of the air tubes, and the air chamber is surmounted by a cap 14 having outlets 15 for the products of combustion above the inwardly projecting top "flange 16 of the air chamber. 17 represents a deflecting ring arranged in the lower portion of the chimney on the inner side of the air inlet openings 12. This delecting ring is secured with its lower end t-o the lower end of the flaring portion 11 of the chimney and extends obllquely inwardly and upwardly therefrom, approximately to the height of the air inlet openings. This defiecting ring prevents air currents which enter through the openings 12 from blowing across the top of the globe and deflects such air currents upwardly along the flaring port-ion of the chimney, thereby maintaining an annular layer or envelop of cool outside air along the inner surface of the chimney which confines the hot gases escaping upwardly from the lglobe and prevents the same from coming in contact with the chimney and overheating and cliscoloring the same. This upwardly flowing layer of cool air eventually mingles to a certain extent with the hot globe gases flowing upwardly through the chimney, and this mlxture of air and gases passes from the latter into the upper portion of the air chamber from which part of this mixture passes to the tubes. The current of hot globe gases flowing upwardly from the globe through the deflecting ring operates in the manner of an injector and accelerates and promotes the induction of cold outside air through the openings 12 into the chimney.

In the construction of the lantern top represented in Fig. 3, the chimney D is cylindrical and held down upon the globe by a spring 18, which surrounds the lifter bar 19 connected with the chimney.

I claim as my invention:

1. In a tubular lantern, the combination with an air chamber with which the upper ends of the tubes are connected, a globe, and a chimney arranged with its upper portion within said chamber and extending below the same to the globe, said chimney having an annular row of air inlets near its lower end, of a deflecting ring arranged within the lower portion of said chimney on the inner side of said inlets and having its upper edge arranged adjacent to the upper edges of saidopenings, substantially as set forth.

2. yIn a tubular lantern, the combination with Van air chamber with which the upper ends of the tubes are connected, of a chimney arranged within said chamber having its upper end arranged adjacent to the mouthsof the air tubes and its lower portion below said chamber provided with an annular row of air inlets, and a deflecting ,said inlets, substantially as setforth.

3. In a tubular lantern, the combination with an air chamber with which the upper ends of the tubes are connected, a globe, and

a chimney arranged with its upper portion Within said chamber and extending below the same to the globe, said chimney having an annular row of air inlets near its lower end, of an oblique deflecting ring arranged within the lower portion of said chimney on the inner side of said inlets and extending upwardly and inwardly over the upper end 'of the globe, substantially as set forth.

4. In a tubular lantern, the combination with an air chamber with which the upper ends'of the tubes are connected, a globe, :1 -nd a chimney arranged with its'upper portlon within said chamber and having a downwardly-flaring bottom portion which bears upon the globe and which is provided 'near its lower end with an annular row of air inlets, of an oblique deflecting ring arranged within said flaring lower portion of the chimney and extending upwardly and inwardly on the inner side of said inlets and terminating approximately at the level thereof, substantially as set forth.

Witness my hand 'this 31st day of Au gust, i912.

CHARLES L. BETTS.

Witnesses: r

ROBERT A. CURRIE, HOWARD lL. FLETCHER.

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