US1050135A - Hot-water or steam boiler. - Google Patents

Description

P. W. HIDER.

HOT WATER 0R STEAM BOILER.

APPLICATION FILED MAR.18, 1911.

1,050, 1 35. v Patented Jan. 14, 1913.

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UNITED STATES PATENT @FFIQE;

FREDERICK W. HIDEB, 0F TQRONTO, ONTARIO, CANADA.

HOT-WATER OR STEAM BOILER.

To all whom it may concern:

Be it known that I, FREDERICK 1V. Hmnn, a subject of the King of Great Britain, resident of the city of Toronto, in the county of York, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Hot-Tater or Steam Boilers; and I do hereby declare that the following is a full, clear, and exact description of the same.

The invention relates to improvements in hot water or steam boilers, as described in the following specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially in the novel construction and arrangement of parts whereby the gases of combustion from the combustion chamber inclosed by the brimary heating chamber are conducted around its exterior and circulated in contact with a secondary heating chamber.

The objects of the invention are to utilize to the fullest extent the heating capacity of the gases of combustion, to obtain a very large heating area, and to economize in the consumption of fuel.

In the drawings, Figure 1 is a vertical sectional view of a boiler constructed in ac cordance with this invention. Fig. 2 is a vertical cross sectional view of the device.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, 1 is the primary heating chamber having a fire sheet 2, and a crown sheet 3 and inner and outer front heads 4: and 5 and the inner and outer tube sheets 6 and 7 respectively.

8 is the fire door opening through the front heads 1 and 5 and 9 are the fire tubes extending between the sheets 6 and T.

10 is a steel ring arranged between the inner and outer shells of the chamber 1 at the bottom thereof to which said shells are firmly riveted in a water tight joint. The chamber 1 is supported upon a suitable base 11 having the inwardly extending flange 12 upon which the ring 10 rests.

13 are the grate bars extending across the combustion chamber 14 and resting on the inwardly extending edges of the flange 12.

15 is a boiler of the return tubular type supported midway of its length by a thread ed nipple l6 communicating vith the in- Specification of Letters Eatent.

Application filed. March 18, 1911.

Patented J an. 14,1913.

Seria1 No. 615,412.

terior of the primary heating chamber 1 said nipple being arranged about midway of the length of said heating chamber.

17 are upwardly extending flanges on the exterior of the casing 1 extending from end to end thereof.

18 are flanges secured to the sides of the boiler 15 midway of its height and extending from end to end thereof.

19 are outer casing sections resting in the flanges 17 and extending upwardly to the flanges 18 said sections extending from end to end of the boilers.

20 is a metal back preferably supported from the base 11 and inclosing the rear ends of the chamber 1 and boiler 15 and having a smoke flue 21 at the top thereof and a baffle plate 22 extending inwardly immediately below the end of the boiler 15.

23 is a vertical baffle arranged within the back 20 opposite the fire tubes 9 and forming an air space 24 at the lower end of said back whichair space is provided with an opening 25 at the bottom thereof.

26 is a front shield resting on the top of the chamber 1 and extending above the fire tubes in the boiler 15.

The back 20 and shield 26 are united with the side sections 19 and inclose a fire chamber around the top and back of the chamber 1 and bottom and front and rear of the boiler 15.

27 are perforated tubes secured in the back 20 and extending inwardly between the chamber 1 and boiler 15, said tubes being open at the outer ends and forming air passages.

In the use of this boiler the gases of com bustion first heat the water in contact with the inner shell and passing through the fire tubes 9 are carried upwardly and over the top of said chamber 1, the baffle 22 directing the flow of gases along the under surface of the boiler 15. The gases of combustion in passing through the chamber between the two boilers are revivified by a supply of fresh air entering the back through the opening 25 and also entering through the perforated tubes 27 and said gases then passing through the tubes of the boiler 15 are carried up through the smoke flue. The introduction of fresh air in this manner to the space between the boilers assists the combustion of the gases very materially and acts as a very effective smoke consumer.

It will be seen from this description that the gases of combustion are carried through a circuitous passage and are actively in contact with water heating surfaces throughout their entire passage, consequently a very large heating area is presented to the fire and as the body of water is relatively small the result is that the water is heated very quickly and will be retained at the desired temperature with the minimum consumption of fuel.

The arrangement of the feed and return pipes to the boiler is such that the water is drawn off from the upper boiler 15 at the ends and the return pipes are connected to the chamber 1 at the bottom corners. The cool water is thus brought in at the bottom of the boiler and rising flows to the center passing through the nipple 16 and is again dispersed toward the ends of the boiler 15 in order to reach the outflow pipes. A very effective circulation is thus provided.

An important feature in the arrangement of the connection between the two boilers is the use of the threaded nipple 16. With this arrangement the nipple may be turned to adjust the height of the upper boiler.

What I claim as my invention is A hot water or steam boiler, comprising, a portable base and grate, a fire box formed of a double walled casing resting on said base and forming a water jacket and having fire tubes at the rear end, a metal casing inclosing the rear end of said fire box and extending forwardly and supported from the side walls of said fire box, said casing having an opening in the top and a smoke flue at the rear end rising from the top, a fire tube boiler of shorter length than said fire box supported in the opening in said casing and closing said opening, a pipe connection joining said fire tube boiler to the water jacket of said fire box and forming a water passage therebetween, and a ba iiie plate projecting inwardly from the rear 01'' said metal casing immediately below said upper boiler and directing the gases of coinbustion forwardly between said water jacket and said boiler.

Signed at the city of Toronto, Ontario, Canada this 13th day of March 1911.

FREDERICK W. HIDER.

Witnesses A. DENNISON, B. TUoK.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

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