US79866A - harvey - Google Patents

Description

SHEA &HARVEY. Protecting Furnaces.

No. 79,866.. l I Patented July 14, 1868.

-N.PETERS, FHDTO-LITHOGRAPNER, WASHINGTON. D. C.

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WILLIAM SHEA AND L. 1). HABVEK'GF HARVEY, MICHIGAN.

Letters Patent No. 79,866, dated July 14, 1868.

IMPROVEMENT IN FURNAGES FOR MELTING METALS.

TOALL WHOM IT MAY CONCERN:

convenient.

Beit known that we, WILLIAM SHEA and L.'D. HARVEY, of Harvey, in the county of Marquette, and in the State of Michigan, have invented certain new and useful Improvements in Furnaces; ancl do hereby declare that the following is a full, clear, and exact description thereof, reference being made to the accompanying drawings, and to the letters of reference marked thereon.

In the annexed drawings, forming part of this specification, A represents the brick-work of a furnace; B, the fore-bay; G, the hearth; D D, the tuyere-arches. Above these tuyere-arches are two protecting-plates, and below is one, marked, respectively, E, F, and G. These plates are made of cast iron, two inches thick, four feet long, and twenty or twenty-two inches wide, as the furnace may require, with a threequarter inch pipe inside of the same, bent as represented in Figures 2 and 3. The pipes ineachof the plates have two openings, one, H, being the feed-pipe that supplies the plates with cold water, and. should have a stop.-cock in the arch at some convenient place, to regulate the supply of water. The other opening, I, is a dischargepipe, leading to any point to get rid of the waste water.

The plates E, F, and G are placed in the third course of brick, upright; G, below the, tuyere-arch, and

extended to protect the jambs; E and F above the tuyere, at eonvenient distancc-from each other, to cool-the brick around the crucible. There are also two half-circle plates, J, With the same arrangement of pipes under the hearth. The pipes, when laid in brick-work, can be bent, so as to come at any point that would be most The advantages of this combination ofplates antl pipes arc- V First, in making the plates in pieces, three for each t-uyere-arch, the pipes will be short and not so liable to be stopped up with the water scalding. V

Second, in case one plate should get stepped up, the rcst,of the plates will keep the hearth from burning out, which can be done by using more water in them, as there is a stop-cock on each feed-pipe.

Third, by using these plates one hearth can be made to last three times as long as one without them. Fourth, by using these plates the crucible can at once be built and kept at the size of four or five feet in diameter, when in ordinary cases it is first built with a diameter of thirty to forty inches, an(l then burnt to the larger size before it makes iron fastand economical. o Having thus fully described ourinvention, and the advantages accruing therefrom, what we claim as new, and rlesire to secure by Letters Patent, isl The putting of pipes into cast-iron plates, substantially as and for the purposes above set forth. In testimony that we claim the foregoing, we have hereunto set our ll1tl1I.lS, tlJlS 16th day of November, 1867 WILLIAM SHEA,

L. D. HARVEY.

Witnesses: r

11mm: D. Surrr 1, J. M. WILKIssox.

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