US375282A - Half to joseph block - Google Patents

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US375282A US375282DA US375282A US 375282 A US375282 A US 375282A US 375282D A US375282D A US 375282DA US 375282 A US375282 A US 375282A
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    • F22B25/00Water-tube boilers built-up from sets of water tubes with internally-arranged flue tubes, or fire tubes, extending through the water tubes


2 Sh'eets-Sheet 1.
Patented Dec. 20, 1887.
(No. Model.)
SPECIFICATION forming part of Letters PatentNo. 375,282 dated December 20, 1887.
Application filed August 5, 1887. Serial No. 246,211. (No model.)
To all whom it may concern.-
Be it known that I, OLIVER Hownnn GEN- TRY, a citizen of the United States, residing at Opelonsas, in the parish of St. Landry and State of Louisiana, have invented a new and useful Improvementin Steam-Boilers,of which which the following is a specification.
My invention relates to an improvement in steam-boilers; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and
particularly pointed out in the claim.
In the accompanying drawings, Figure 1 is a vertical longitudinal central sectional View of a steam-boiler embodying my improvements. Fig. 2 is a vertical transverse sectional View of the same, taken 011 the line a; w
10f Fig. 1. Fig.3 is an enlarged detail sectional view.
A represents a pair of circular drums, of
suitable length and diameter, which are provided on their outer sides with openings B and on their inner sides with openings 0, which are much larger than the openings B, and are concentric therewith.
D represents a series of horizontal watertubes of suitable diameter, which have their ends connected to the openings O, and extend from one drum to the other, thereby supporting the drums in a vertical position. The said drums are supported upon a setting of brickwork or masonry, E, of the ordinary construction, and a covering or case, F, extends upward from the wall of this setting and envelops the boiler. In one end of the setting is constructed a combustion-chamber, G, having an ash-pit, H, below it, a grate, I, being arranged between the combustion-chamber and the ash-pit in the usual manner. On the front side of the boiler,and communicating with the openings 13 in the front boiler, is arranged a smoke-stack, K, which is secured to the drum A and steam-drum O by means of bolts L.
M represents a mud-drnm,which is arranged transversely under the lower side of the rear drum, A, and communicates therewith through a short vertical pipe, N.-
0 represents a steam-drum, which is arranged horizontally over the water-drums and communicates with the upper sides thereof through short vertical pipes P.
The outer sides of the drums A are connected by means of horizontal flues R, the ends of which extend through the openings B, the said flues R extending centrally through the water-tubes D. One end of each of the said flues R is swaged and provided with an annular flange, S, which extends laterally therefrom and bears against the outer side of the front drum, A. The opposite extremities of the flues R are screw-threaded and are extended through the outer side of the rear drum, A, and non-corrosive nuts T are screwed onto the said threaded extremities of the flues and bear against the outer side of the rear drum, and thereby effectually secure the flues thereto. The outer sides of the said nuts are bent over inwardly, so as to form lips U, that cover the ends of flues It and preserve the same from direct contact with the fire. Theinner edges of the said lips are flush with the inner sides of the pipe R, to prevent the said lips from obstructing the passage of the products of combustion through the said pipes It.
When the boiler is filled, the water'in the drums A and the tubes D entirely surrounds the flues R, which extend through the centers of the said tubes. When a fire is started in the furnace, the smoke, flames, heat, and products of combustion pass upward around the water-tubes and circulate around the same, in the direction indicated by the arrows in Fig. 1, until they reach the rear drum, A, when they deflect, pass under the said rear drum, and then pass forward through the flues B into the stack K, up which they escape.
By providing the drums with the connected water-tubes D, and by providing the fines R,
which extend longitudinally through the wa- 'ter-tubes and through the drums A, the boiler IOO through the centers of the water-tubes and In testimony that I claim the foregoing as IO through the drums, the mud-drum M,arranged my own I have hereto aflixed my signature in under one of the drums A, communicating presence of two Witnesses.
therewith and supported on a bridge-wall, the
steam-drum 0, arranged above the drums A OLIVER HOWARD GENTRY.
and communicating therewith, and thesmokestack K, bolted to the outer side of one of the Witnesses:
drums A and to one end of the drum 0, sub- JOHN HIGGINS,
stantially as described. AGENOR GIRON.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592216A (en) * 1947-01-02 1952-04-08 Watts Albert Edward Return fire tube boiler with indirectly heated domestic supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592216A (en) * 1947-01-02 1952-04-08 Watts Albert Edward Return fire tube boiler with indirectly heated domestic supply

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