US752492A - Steam-boiler - Google Patents

Description

PATENTED FEB. 16, 1904.

' N. L. WARREN. STEAM BOILER.

APPLIATION FILED MAY 22. 1903. N0 MODEL. 2 SHEETS-SHEET l.

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No. 752,492. PATENTED PEB. i6, 1904.

N. L. WARREN. STEAM BOILER.

APPLIOAHUN FILED MAY 22, 1903.

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Patented February 1e, 1904.

PATENT OFFICE.

NEUTON L. WARREN, OF MACON, GEORGIA;

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 752,492, dated February 16, 1904.

Application tiled May 22, 1903. Serial No. 158,265. (No'model.)

To tu whom t may concer-n,.-

Beit known that I, Neuron L. WARREN, a citizen of the United States, and a resident of Macon, in the county of Bibb and State of Georgia, have invented a new and Improved Steam-Boiler, of which the following is a full, clear, and exact description.

This invention relates to improvements in steam-boilers, an object being to provide a boiler of large heating capacity, but requiring comparatively little iioor-space and so arranged that it may be readily inspected and cleaned both within and without.

Other objects of the invention will appear in the general description.

I will describe a steam-boiler embodying my invention and then point out the novel features in the appended claims. Y

Reference is to be had to the accompanying drawings, forming a part of this specilication, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional elevation of a steamboiler embodying my invention. Fig. 2 is a front elevation thereof, partly in section; and Fig. 3 is a detail showing means for securing the stay-rods.

The shell 1 of the boiler is preferably surrounded by a casing 2 of asbestos or similar non-conducting material'. Arranged'at the frontof the boiler-shell lare the two furnaces 3 4:, provided with suitable ash and fire doors, the said furnaces communicating through an opening- 5 at the rear end of the partition- Wall. Communicating through 'the head 6 with each furnace is a series of ues 7, these iiues at the rear end communicating through the rear head 8 with a chamber 9. Above each series of iiues 7 flues 10 provide communication between the chamber 9 and the smoke-box 11 at the front end of the boiler, this smoke-box having an uptake 12. Between the lower iiues 7 and the flues 10, above the same, tie-rods 13 connect the boiler-heads. These tie-rods 13 are bifurcated at the ends and are secured by means of pins to angleirons 14, attached to the heads by rivets or otherwise. Above the upper sets of iiues 10 the boiler-heads are connected by tie-rods 15. These tie-rods 15, which may be either Solid or tubular, are threaded at the ends to engage in socket members 16, riveted or otherwise secured to the heads. i

It will be noted that there is a considerable space between the tubes leading from the two furnaces and between the return upper flues. This space will permit a person to pass through the boiler to inspect the ilues and other parts of the interior, and the boiler-shelll is provided with a manhole 17, normally closed by a cover 18.

To give strength to the boiler-heads without employing cross-braces and the like, each head is bulged or pressed outward from top to bottom at the center, as indicated at 19.

At the lower portion ofthe chamber 9 is an outlet-tube 20, through which soot-or the like may be discharged, this tubebeing closed by a swinging cover 21.

By arranging the several tie-rods as shown the heads of the boiler are thoroughly braced, and I avoid the use of cross braces or ties, that would take up considerable space in the boiler. Therefore I provide a very large heatingspace or water-containing space in a comparatively small Hoor-space.

The boiler may be drained out when necessary through a tube 22, extended through the bottom thereof.

Having thus described my invention, I claim as new and desire to securefbyLetters Patent* l. A boiler, comprising a shell, heads for the boiler, each head having a vertically-disposed swelled or bulged-out central portion, extending from top to bottom, sets of ues arranged one above the other and passing through the heads, tie-rods arranged between the heads and between the upper and lower sets of tubes, and tie-rods for the heads arranged above the upper sets of tubes.

2. In a boiler, a shell having a smoke-box at its front end and a soot-chamber at its rear end, sets of tubes arranged one above the other, one set leading into the soot-chamber and the other set from the soot-chamber to the smokebox, tie-rods connectingv the heads of the shell and arranged between the sets of tubes, and tie-rods connecting the heads of the shell and arranged above the upper set of tubes.

3. A steam-boiler having a smoke-box at its IOO ' posite sides of said bulgedout portions and front head and a soot-chamber at its rear end, two furnaces arranged at the front end of the boiler, a setof tubes leading fromeach furnace to the soot-chamber, the sets of tubes being spaced apart, a set of tubes arranged above each of the first-named sets of tubes and leading from the soot-chamber to the smoke-box, the said sets of tubes being spaced from each other and from the said iirst-narned sets of tubes, and tie-rods connecting the heads of the boiler.

4. A boiler, comprising a shell, two furnaces at one end of said shell, a soot-chamber at the opposite end of the boiler, heads for the boiler` having bulged-out central vertical portions, tubes extended through the heads at opproviding communication between the furnaces and the soot-chamber, a smoke-box at the front of the furnaces, opposite return- 'tubes above the first-named tubes and providing communication between the soot-chamber 'and the smoke-box, there being a considerable space between the tubes of the furnaces and the sets of tubes of each furnace, the shell being provided with a manhole above said space, and tie-rods connecting the heads.

In testimony whereof I have signed my name to this specication in the presence of two subscribing witnesses.

NEUTON L. WARREN.

Witnesses:

FRANCIS HERRING, J oHN S. SCHOFIELD.

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