US128035A - Improvement in draught-regulators for hot-air furnaces - Google Patents

Description

S. J. GOLD. Draft Regulator for Hot-Air Furnaces.

N0. 128,035. l Patentdlune18,l872.

1 ffii- 1111 PATENT OFFICE` sTEPHEN J. COLD, OE COENWALL, CONNECTICUT.

IMPROVEMENT IN DRAUGHT-REGULATORS FOR HOT-AIR FURNACES.

Specification forming part of Letters Patent No. 128,035, dated June 18, 1872.

Specification describing a new and Improved Draught-Regulator for Hot-Air Furnaces, invented by STEPHEN J. GOLD, of Cornwall, in the county of Litchfield and State of Connecticut.

Figure l is a sectional side elevation of my invention; and Fig. 2 is a front elevation of the same.

Similar letters of reference indicate corresponding parts.

This invention relates to a new apparatus applied to hot-air furnaces for the purpose of reducing the draught if the heat produced should reach or exceed a certain degree. The invention consists principally in the use of a boiler 7 placed within the hot-air chamber that surrounds the furnace, and in the connection of said boiler, by means of pipes, with a vessel containing a diaphragm or piston in such a manner that, when, by an excess of heat, steam is created in the boiler, the dia-- phragm or piston will be moved, and will, by its motion, draw the doors of the furnace into the necessary position for reducing the draught and heat.

A in the drawing represents the furnace, of suitable size and kind, inclosed in a hotair chamber, B, which, by a pipe or pipes, C, communicates with all apartments to be warmed. a and b are the doors leading to the furnace -one to the fire-place, the other to the lower air-supply chamber. These doors are, by chains c and d, respectively, connected with the ends of a-lever, l), which is, at e, pivoted to a stem projecting from a vessel, E. Within the latter is a diaphragm or piston, (f, from which a rod extends to connect with thelever D, as shown. By means of` a pipe, F, the vessel E communicates with a flat boiler, G, which is, bythe pipe F, suspended within the air-chamberB. The boiler is proportionately small, and is to be charged with water.

When the heat in the chamber B becomes so high as to create steam in the boiler the steam will act against the diaphragm or pis ton and move it so as to swing the lever D, which will then open the door a and shut the door b, thereby reducing the draught.

The pipe F is jointed in order that it may accommodate itself to the up and-down-movements of the boiler. The boiler is swung or turned in order Eto expose it to the various stratums of heat, and thus regulate the action upon doors a b. The more heat required the lower should the boiler be set, and vice versa.

If the boiler can receive heat only from the air that warms the house, then the regulator will neither act too quickly nor allow steam to be raised to a high pressure, as the regulator will keep uniform the temperature of the hot air that makes the steam. This enables me to use a boiler with one qua-rt of water for the purpose of making steam to operate the regulator. There is no outlet for the escape of steam, and none is needed, since steam is raised only by the hot air in the chamber. There is also no waste of water, since, when steam is raised, the temperature of the air that made it is lessened and the steam is again condensed into water, which returns to the boiler.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The ilexible pipe F, arranged as and for the purpose set forth,

2. The combination, with said flexible pipe, of a boiler, G, surrounded entirely by the hot air of chamber B, as and for the purpose described.

' S. J. GOLD.

- Witnesses:

A. V. BRIEsEN, T. B. MOSHER.

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