US525696A - Robert m - Google Patents

Description

(N`o Model.) Y

' R. M. DIXON. LAMP. l

No. 525,696. Patented Sepp. 11, 1894.

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UNITED STATES yPATENT O'EEICE.Y

ROBERT M. DIXON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO VTHE SAFETY CAR HEATING AND LIGHTING COMPANY, OF NEW YORK, N. Y.

LAMP.

SPECIFICATION forming part of Letters latent No. 525,696, dated September 11, 1894. Application tiled December 27, 1893. Serial No. 94.262,v (No model.) v

To all whom it may concern.' l

Be it known'that I, ROBERT M. DIXON, a resident of East Orange, Essex county,`and State of New Jersey, have invented certain new and useful Improvements in Lamps, of

which the following is a specification.

My invention relates to lamps for use in railway cars, and in like situations, and has for its object to utilize the ascending air curzo rent from the lamp to remove the foul air from the car and to discharge the same into the outside air.

A further object of my invention is to insulate the heated lamp from the roof of acar r 5 by producing a circulation of air through the space between the lamp and the roof of the car which will maintain the roof cool and obviate danger of combustion.

To this end my invention consists in the zo construction set forth Iherein,illustrated in the accompanying drawings, forming part hereof and more particularly pointed out in the claims. Y

.In the drawings,-Figurel is avertical lonz5 gltudinal section of a lamp embodying one form of my invention, and Fig. 2 is a plan view of the lamp proper with certain parts removed for clearer illustration as will be more fully described. Y

3o In the drawings Aindicates a two-part ring hinged together at a and secured by the catch b. This ring is suitably suspended from the roof of a car as by brackets c c and serves to support the principal parts of the lamp,

3 5 as will be more fully described hereinafter. Surrounding this two part ring is a ring B,

one edge d of which is placed against the roof v of the ear, the other edge e extending down into proximity with the ring A and leaving 4o an annular air space between the ring A and the edge e. A

Supported by the ring A is a reflector C having perforations f therein. This redector in turn serves to support the lower sectionD of the chimney. Above this lower section is a group of draft tubesE which are supported in a framework composed of heads F and L united by a rigid connection such as the rod R, entered into nipples S and Tintegral with 5o the heads. One of these heads as F may be provided with apertures p and the other as L may be provided with lugsl leaving asuecession of air spaces forming what is substantially an annular passage between the edge of head L and the casing H. This frarne- 5 5 work is supported by the casing H, as shown, which in turnks supported by the brackets c,

or if desired, the casing maybe otherwise supported. Surrounding the framework and tubes E, is a second casing G having perfora- 6o tions g and having a turned over edge g2 screw-threaded or otherwise secured to the head F,which serves to support the casing G. The chimneys E are surmounted by a deflector plate O mounted on ribs o secured to the casing G.

' The lower section of the two part ring A has a circumferential groove g within which is seated an elastic packing h. Upon this packing rests the lip fi of the lamp globe H 7o Resting upon the lip e' and forming an additional packing for the joint is the ring lc.

The gas-pipel is preferably attached to a nipple I made integral with the head L and which carries the reflector J and the jets j. The gas'is supplied to the pipe I through the nipple by the pipe K connected therewith, as shown. Surrounding the chimney D is a downwardly extending deflector plate or ring Mwhich may be supported in any suitable 8o manner, as by the brackets c c.

Surrounding the casing H is a funnel N which is supported by the brackets c c and extends through the space between the decks B B2 of the car roof. Mounted upon the up- 8 5 per deck B2 of the car roof `is acollarP which surrounds the upper end of the funnelNand the tubes E. The whole is surrounded by a cowl or ventilator Q fitting over the collar P.

During operation of vthe lamp, the air en- 9o ters the lamp through the annular space between the ring A and the edge e passing upward as shown by the arrows between the funnelsN and the casing H into the collar P. Part of the air passes out through the cowl Q and part enters the second casing G through the apertures g', thence it passes downward into the space between the casing H and chimney D, thence under the deflector plate M through the apertures f in the rellector C', loo into the globe or 5 combustion chamber H. The products of combustion travel upthrough the chimney D and tubes E into the cowl Q and out to the open air.

Owing to the construction and arrangement of the several parts, the lamp will burn with a steady flame and at the same time willserve to rid the car of the impure air therein, it being well known that such impure air is pres` ent in the upper strata of the car in greatest proportion. The circulation of air between the lamp and the roof of the car will also serve to keep the roof cool and ger of combustion.

Having described my invention, what I claim is l. In a car lamp the combination with a combustion chamber or globe and burner of the rings A and B, casing H, funnel N, open communication from the interio-r of the car to the combustion chamber through the chamber formed between the casing H and funnel N, and an open exit for the products of combustion, substantially as described.

2. In a car lamp the combination with a burner and combustion chamber therefor, of a casing G, a casing H, extending below said casing G, a downwardly extending dedector plate M, openings below said detlector plate which communicate with said combustion chamber and 'an open exit for the products of combustion, substantially as described.

3. The combination in a car lamp of afunnel N extending between the decks of a car roof and exit passages for the products of combustion arranged within the funnel, substantially as described.

4. The combination in a car lamp of a suitably supported head F, casing G supported prevent dan-v by said head, a plate surmounting the casing G and secured thereto by ribs o, as specified. 5. The combination in a car lamp of draft @n tubes, a casing H, a perforated casing G connecting withrsaid casing H and surrounding said tubes, a downwardly extending deectn! plate M, a globe or combustion chamber H', j the inlet to said combustion chamber through the perforations in the casing G, and exit passages for the products of combustion arranged within the'funnel H, and casing G, as specified.

6. A car lamp having its combustion cham- 5o ber located within the car, exit passages 'therey from extending through the roof of the car, a casing surrounding said exit passages and extending from within the car through the roof thereof, and means for supplying air .5g to the combustion chamber from the interior of the car around the top of said casing, nl specified. l 7. The combination in a car lamp, ofafunp nel N extending between the decks of a car 6e roof, a casing H within said funnel N, acombustion chamber, draft tubes communicating with said combustion chamber and located within the casing H, whereby air may be conveyed from the interior of the car to the out- 65 j side between the casing H and funnel N and to the combustion chamber around said casing H, substantially as and for the purposes specified.

ROBERT M. DIXON.

lVitnesses:

Gno. E. MORSE, HARRY M. TURK.

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