US384941A - Steam-generator - Google Patents

Description

(No Model.)

E.- H. THOMPSON.

STEAM GENERATOR.

No. 384,941. Patented June 19, 1888.

iii/129554 N. PETERS. Fholol lhugnphar. Walhinglon. D C.

UNITED STATES PATENT OFFICE.

ELIAS H. THOMPSON, OF NEWARK, ASSIGNOR OF ONE-HALF TO E. LOLAEK AND J. B. WELOH, OF TULARE, AND CORNELIUS A. SHERMAN, OF LOS' GATOS, OALIFORNI A.

STEAM-G EN ERATO R.

EPECIFICATION forming part of Letters Patent No. 384.941, dated June 19, 1888.

(No model.)

To all whom it may concern.-

Be it known that I, ELIAS H. THOMPSON, a citizen of the United States, residing at Newark, in the county of Alameda and State of California, have invented certain new and useful Improvements in Steam-Generators; and I do hereby declare that the following is a full, clear, and exact description of mysaid invention, reference being had to the drawings that to form a part of this specification.

My invention relates to improvements in steam-generators or boilers in which liquid fuel-such as petroleum or gasis burned; and it consists in certain improved construction of boiler or generator, consisting of an annular water-chamber with a tubular fireflue extending through it from end to end,and Water-tubes arranged in and around the fireflue, as hereinafter fully described; also, in the combination,with each generator, of an inclosing-case with spaces and partitions for carrying and directing the heated air and gases from the end of the fire-flue in a circuitous manner around the outside of the generator,

as hereinafter described.

The nature of these improvements and the manner in which I construct and carry out the same to produce a steam-boiler for burning liquid fuel or gas are explained in the following description, the accompanying drawings being referred to by figures and letters.

Figure l is a side elevation partly in l0ngitudinal section. Fig. 2. is a crosssection at a: 00, Fig. "1. Fig. 3 is a cross-section at y y,

Fig. 1. Fig. 4 is a cross-section through a boiler constructed according to my invention, with three fire-fines.

I form the body A of my improved boiler with an inner shell, A, and an outer shell,

0 A, united at both ends by a double head, B B ywith a tubular opening and passage, the part whereof which lies between theshells- B and B being inclosed by a thimble, B, there being also a pipe or connection, B, con- 4 5 necting the casting I with the thimble B. The outer shell is secured to the head B and the inner shell to the head B. This construction produces an annular water-chamber, G, surrounding a tubular fire-flue, D, which extends through both ends of the boiler. \Vithin this fire'space are water-tubes E E, arranged in a circle for the full lengtl1,with the ends of I the tubes setting through the heads or flanges B, and with fire-spaces between the tubes for circulation of heat and flames around them. 5 5 I At one end of the flue D, directly in front of the opening in one head, is placed a petrol leum-burner of suitable capacity and power to inject and throw a flame through the fire-flue from end to end of the boiler. petroleum-burner is used for the purpose with connection of a petroleum-tank and a steamjet supplied from the boiler. Such conuec tion is clearly shown in Fig. 1 of the draw I I ings.

A steanrdrum, G, is placed on the top of the boiler and connected in the usual manner with the steam and water space, the necessary f f j steam-gages and safetyvalve being provided on this part. iron casting, I, that surrounds them on all sides, but leaves space between its inside walls and the outer surfaces of the boiler and drum. This space is divided into passages K K by longitudinal partitions L L, thatterminate at alternate ends just short of the head or end of the casing, as shownat W, Fig. 1, so that one passage communicates with the other, and the whole space forms a circuitous passage from I the discharge end of the fire-space up to the 80,31

outlet J at thetop of the casing. The object of this casing is to utilize what heat and gases are discharged at the rear end of the boiler firespace by carrying them around the outside of the generator, back and forth, before passing 5 into the chimney. It will be obvious that these passages can be formed also in a brick-work setting, where suohcasing may be preferred, instead of the cast-iron case I.

In Fig. 4 I have illustrated as a modifica- 9o Any suitable 6o I inclose these parts in a cast- 70f? the spaces at the ends arranged over the fire, and I do not claim such, as my invention possesses the advantage of utilizing the entire amount of heat generated, and has no waste spaces and no unheated parts in which it is difficult to heat the water.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a steam-generator, theeombination of an outer shell, A, and an inner shell, A the heads B and 13, extending inward past the shell A all around at each end thereof, and having the thimbles B, connecting the said heads, substantially as described, and the water-tubes E, placed in a circle all around the fire-flue and communicating at each end with the waterchamber between the shells A A, as and for the purpose set forth.

2. In a steam-generator, the combination, with a cylindrical fire-flue contracted all around at both ends, a water-chamber surrounding said fire-flue on the sides and over a portion of the ends, and thimbles connecting the walls of the ends, of a series of water- ELIAS H. THOMPSON. [n s.]

\Vitnesses:

0. WV. M. SMITH, CHAS. E. KELLY.

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