US429426A - Carbureting apparatus - Google Patents

Description

(No Model.) 3 'Sheets sheet 1. *W. DAWSON. GARBURETING APPARATUS.

No. 429,426. Patented June 3, 1890.

' 1 IVE ES.-

(No, Model.) Sheets-Sheet 2.

W. DAWSON.

GARBURETING APPARATUS.

No. 429,426. A Patented June 3, 1890.

I ITNESSES: Q J INVENTOR fi zc-Afi m: mums 721588 (10., mow-Limo WASHINGTON, n. c

11v VENTOIR 3 Sheets-Sheet 3.

Patented June 3, 18.90.

(No Model.)

W. DAWSON.

I GARBURETING APPARATUS. No.- 429,426.

UNITED STATES PATENT @FFICE.

\VILLIAM DAWSON, OF PHILADELPHIA, PENNSYLVANIA.

CARBURETING APPARATUS.

SPECIFICATION forming part Of Letters Patent NO. 429,426, dated June 3, 1890. Application filed June 24, 1889. Renewed April 11, 1390. Serial No. 347,454. (No model.)

To aZZ whom it may concern.- Be it known that 1, WILLIAM DAWSON, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Oarbureting Apparatus,whereof the following is a specification, reference being had to the accompanying drawings.

My invention relates to that class of devices in which a current of air under pressure (preferably obtained from the air-brake system of the train of cars) is carried through carbureting devices, where it is charged with the vapor of gasoline or other volatile hydrocarbon, and thence conducted to proper burners within the cars. The great majority of cars have heretofore been supplied with lampfixtures intended for other kinds of illuminant, which fixtures are not only costly in an entirely new arrangement of fixtures, thus sacrificing those which had been previously used, as above stated. My improvements are intended to overcome this necessity and to permit the retention of existing lamp-fixtures, or rather of the type of lamp-fixtures which have heretofore been most popular.

Other objects of the invention will be stated hereinafter.

Referring now to the drawings, Figure 1 represents a partial transverse vertical section through the upper portion of an ordinary passenger-car, showing in elevation such a lamp-fixture as has heretofore been generally used for oil-lamps, &c., and also showing a partial vertical section through the carburetor which is applied thereto. Fig. 2 is a vertical section, on an enlarged scale, through the carburetor and lamps. Fig. 3 is a top or plan view of certain of the details; and Fig. 4 represents a longitudinal section through the car-roof and carbureting devices placed thereon, showing a system of three lamp-fixtures varying slightly in their arrangement from those before shown.

The roof of the car'is represented at A,from which are suspended the lamps G G, having shades H, as shown, and above them chimneys I, passing up through the car-roof and terminating in hoods L. I accommodate this arrangement to the carbureting system in the following manner; A cylindrical shell B, of sheet metal, closed, except as hereinafter described, contains the carburetor proper, which consists of a series of sheets of flannel O stretched upon metal frames D, properly supported within said shell. The inlet-pipe for the air-current is shown at E, said pipe being provided with jets 6, arranged so as to distribute the entire current among the sheets of flannel. The exit-pipe F leads from the other side of the shell down through the roof of the car and communicates with the branches ff of the burners.

The carburetor is charged'with gasoline by means of a vertical pipe M, entering through the top and arranged along one side, but having horizontal inwardly-proj ectin g jets m, by means of which the gasoline is thrown upon each one of the sheets of flannel. Said pipe has at its outer end a funnel N and stopcock n for convenience in charging.

The carburetor is arranged immediately above the lamps, whose chimneys I pass through it, as shown, said passage being accommodated as follows: The shellB is pierced at the top and bottom to admit the passage of stout metal cylindrical pipes K, (which forma part of the chimneys,) but which are firmly secured by means of flanges, as shown, to the shell proper, so as to obviate any danger of a leakage at the joints. The sheets of flannel C are of course cut away to permit the passage of the cylindrical pipes K, and therefore require to be sustained against sagging, which is accomplished in the following manner: Metal rings Q (see Fig. 3) are sewed into the edge of the flannel around the .holes and are fastened to uprights J, arranged diametrically opposite to one another and resting upon the bottom of the shell B, thus maintaining the sheets of flannel at the proper distance apart and protecting them from contact with the metal of the pipes K, which by becoming overheated might injure the carburetor.

Referring now to Fig. 4, the group of three lamp-fixtures is arranged and supplied in the following manner: The central fixture of the group has burners G G, arranged, in this ICO instance, longitudinally with the car, (instead 7 of across it, as in Fig. 2,) but otherwise similar in their character. Said burners have chimneys II, above which is the carburetor B, constructed as has just been described, but having in addition to an exit-pipe F (similar to the pipe F before mentioned) two other exit-pipes P P, running lengthwise of the car and terminating in closed vessels P P arranged over the lamp-fixtures G G respectively. structed substantially like the inclosing-shell of the main carburetor; but they differ therefrom in having no carbureting system within them, being small receptacles, into which the earbureted vapor or gas passes before supplying the other burners. The chimneys I I", respectively, of said burners pass through the receptacles I" P in the same manner that the chimneys I pass through the carburetor B, and they serve a similar purposeviz., the heating up of the vapor prior to its passage to the burners, in order to maintain its illuminatingpower at the highest point. The desirability of thus heating the vapor in this class of devices is well known, and various apparatus have been devised to effect that purpose; but I deem the auxiliary receptacles P P highly advantageous, especially where the members of the group of burners are at some distance apart, as in the instance shown. The burners G2 G are of course supplied, respectively, by means of the pipes F F The operation of the device is as follows: The carburetor is first charged by pouring in a sufficient quantity of gasoline through the pipe M to saturate the sheets of flannel O, after which the cock at is closed and the aircurrent is admitted at the pipe E. Said current passes equally over the surfaces of the sheets and becomes charged with vapor, passing out at the exit-pipes to the burners. The

These vessels P P are conair-brake system for the lighting of cars; nor

products of combustion pass out through the chimneys, maintaining the temperature within the carburetor proper and the auxiliary receptacles,and thus producing,asbefore stated, auniform degree of illuminating-power in the vapor.

Having thus described my invention, I wish it to be understood that I do not claim, broadly, the use of a carburetor in connection with the do I claim, broadly, the combination, with a carburetor, of passages for products of combustion to heat the same.

I claim- 1. The combination of the burners situated within the car, the carburetor shell mounted upon the car-roof, the chimney-pipes passing through said shell, but secured thereto by close joints, the sheets of absorbent 1naterial suspended upon frames within said shell, the rings secured in the edges of said sheets around the chimney-pipes, and the uprights on which said rings are mounted, said carbureting devices being provided with inlet, exit, and charging pipes, substantially as set forth.

2. The combination of the central carburetor, the burners arranged beneath the same and supplied therefrom, the chimneys therefor which pass through said carburetor, the auxiliaryreceptaclescommunicating with said carburetor, the burners arranged beneath said receptagles and supplied therefrom, and the chimneys of said last-mentioned burners passin g through the said receptacles, respectively, substantially as set forth.

M. DAWSON. lVitnesses:

EDWARD FELL LUKENs, JAMES H. BELL,

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