US141002A - Improvement in metallurgic gas-furnaces - Google Patents

Description

4 Sheets--Sheet1.

l. M. HARTMAN. Metallurgicj Gas-Furnaces.

Patented July 22,1873.

WITNESSES v INVENTUR 4 SheBt's Sh-eet 2.

l. M. HARTMAN'. Metallurgic Gas-Furnaces. o. 141,002.

Patented July 22,1873.

wlmzssts INVENTOR J ufl UNITED STATES PANT JOHN M. HARTMAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO TAWS & HARTMAN, OF SAME PLACE.

IMPROVEMENT lN METALLURGIC GAS-FURNACES.

Specification forming part of Letters Patent No. 141,002, dated July 22, 1873; application filed April 15, 1873.

.To all whom it may concern:

of Pennsylvania, have invented an Improved Gas-Burner for Puddling and other Furnaces,

of which the following is a specification:

The object of the invention is the economical burning of furnace-gases by their intimate mixture with air, either heated or cold, in contact with or in the presence of heated brickwork or other fire-proof material. When heated air is employed it is caught by pipes located in the discharge-opening of a hot-blast oven, boiler setting, puddling, heating, or other furnace, and returned to mix with the gas.

Figure l is a side elevation of the valve chamber, air-pipe chamber, and gas-passage. Fig. 2 is a sectional view of Fig. 1. Fig. 3 is a top or plan view of Fig. 1. Fig. 4 is a reduced side elevation, partly sectioned, of the valve chamber, air-pipe, and gas chamber, brick-work and boiler-setting. Fig. 5 is a reduced end View of the valve-chamber, and the air-pipe and gas-chamber. Fig. 6is aperspective view, showing the brick-work through which the air and gas pass instead of impinging on it. It can be employed instead of that shown in Fig. 1.

A is a case or pipe holder and gas-chamber, and B is a connection or opening to the interior of it. 0 (J are pipes placed lengthwise in the chamber A. Their outlet ends have fire-proof tips D, to protect them from the heat; or movable ends can be used, to be replaced when rendered worthless from the same Their inlet ends have the flanges a, by which they are bolted to the outside of the case or chamber, so as to be easily withdrawn and replaced when burned or otherwise rendered inoperative. E E are fly-valves at the inlet ends of the air-pipes for regulating the quantity of airpassing through them. F is a valve over the dust-opening of the chamber. G is a valve-chamber on the nozzle or connection B of the chamber A. They are bolted together at their flanges b c, to be easily separated when required. H is a conical blowshut valve in the chamber G. It is suspended from the end of the arm I of the shaft J. Its lugs or projections d prevent it from tilting or cooking when closing. K is a lever or handle on the end of the shaft J. c e are pin-holes in the side of the chamber G. The valve H opens by its own weight. Its degree of opening is evinced by the inclination of the lever. The pin f prevents the lever from dropping when the valve is in its adjusted position. The bearings of the shaft J are made perfectly true and tight to prevent the escape of gas. L, Fig. 2, dotted lines Fig. 3, is a fender, which depends from the upper part of the chamber A. It protects the valve H from the heat of the burning gas in the front part of the chamber.

Gas from the puddling or other furnace passes through the valve-chamber G into the chamber A, thence to its front, where it mixes with air (either heated or cold) issuing from the pipes G, and combustion takes place. The air and gas impinge on the heated brick-work M in front of the pipes, whereby the combustion is increased and intensified. Before admitting gas to the chamber A the brick-work M can be heated by any means, the easiest be ing to burn wood upon or against it.

In Fig. 6 the brick-work is shown with openings through which the gas and air can be passed and be more perfectly combined;

I do not confine myself to brick-work of any particular construction; nor do I confine myself to a given material for constructing the bridge M. Any fire-proof material will serve the purpose.

If there is not sufficient heat in the walls of the chamber A to ignite'the gas when it is first admitted, an explosion usually occurs, which is not confined to the chamber. The gas in the fiues becomes fired, and also explodes, causing great destruction. The slidevalve usually employed cannot be closed in time to prevent'an explosion in the fiue's.

When an explosion occurs in a gas-burner using the valve H it is immediately blown shut, and is held in place by the pressure in the chamber A, until the gas is burned. The valve closing on its seat shuts off all communication between the chamber and the fines,

and thereby prevents the gas in the said fines from being fired.

The valve H, by its tapering or conical formation, throws off all dust and dirt which falls through the fines onto the surface of the valve, and which would impair its working if it was allowed to deposit.

The construction of the boiler N for generating steam, and the way of applying the flame to it, do not enter into the invention.

I do not confine myself to the valve H, but claim, broadly, a valve which is closed by the explosive force of the gases in a gasburner, to prevent the gases in the flues from being fired.

I claim as my invention- 1. The gas-chamber A, in combination with the air'pipes O, and the breast'or brick work M, substantially for the purpose shown and described.

2. The gas-chamber A of a gas-burner, in combination with the balance or blow-shut valve H, for the purpose shown and described.

3. The valve H, constructed with a conical or tapering back, and avalve-seat hearing or ring, as and for the purpose shown and described.

4. The chamber A and G, constructed separately, and bolted or otherwise secured to gether by their flanges b c, substantially as and for the purpose shown and described.

5. The valve H, arm I, shaft J, lever K, the openings 0, and the pin f, as and for the purpose shown and described.

6. The depending fender L, in combination with the chamber A, for the purpose shown and described.

7. The chamber A, in combination with the pipes O, as shown and described.

'8. The chamber A, pipes (l, and the valves E, as and for the purpose shown and described.

9. The pipes G, in combination with the fireproof tips 1), for the purpose shown and described.

In testimony whereof I hereunto sign my name in presence of two subscribing witnesses.

J UHN M. HARTMAN.

Witnesses EDMUND P. CooHRAN, FRANCIS D. Pnsronrus.

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