US331440A - Carbon-baking box - Google Patents

Description

(No Model.)

W. J. POSSONS.

GARBONBAKING B0X.

No. 331,440, y Patented Dec. 1, A1885.

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VILLIAM J. .POSSONS, OF CLEVELAND, OHIO.

CARBONBAKING BOX.

SPECIFICATION forming part of Letters Patent No. 331,440, dated December 1, 1885.

Application filed April 11, 1884. Serial No. 127,490. (No model.)

is customary'to make such receptacles in the' shape of plain cast-iron boxes, the carbons being packed therein with sand and covered with aplate of suitable material resting upon the sand and'sealed to the sides with suitable luting. Such boxes, however, under the intense heat of the baking-oven and the pressure of the sand from within frequently bulge out and crack at the sides, thus burning the carbons and allowing them to become displaced and warped. To obviate these difficulties, I form the walls of the receptacle of slabs or plates of refractory material, such as soapstone, which form a non-yielding support for the carbons and complete protection against burning. These plates may be supported by any suitable means, but I prefer to use them as a lining to the customary iron box, the box holding the plates in their proper positions and the plates preventing undue strain upon the sides of the box, as well as insuring the carbons against burning and displacement. Vith this safeguardI am enabled to pack the carbons vertically instead of horizontally, without the risk of their falling apart and becoming warped. rIhis allows about fifty per cent. more carbons to a box and decreases largely the percentage of crooked carbons. By the use of these refractory plates with the iron boxes the latter lasts longer, Wherebyis effected a saving not only 'in the cost of boxes, but in the waste which generally ensues when abox breaks. To further secure this object, and to prevent the destruction of the seal by the sinking of the cover, I form or cast a rib around the inside of the iron box a slight distance below the top, for the purpose of adding rigidity to the sides and Vforming a support for @ove/rv My improvements more specifically comprise a supplementary or false bottom, supported by suitable ribs a slight distance above the bottom of the box, and upon which the ends of the carbons rest. It serves to equalize the heat and prevent the burning of the ends of the carbons. I also improve the construction of .the box by casting or forming ribs upon the under surface of the bottom, to allow of the free circulation of the heat and to add strength to the box.

In the accompanying drawings, Figure 1 represents a crosssection of a filled box. Fig. 2 is alongitudinal section of the box, ready for filling.

a is the outer box, ordinarily of cast-iron. b is the cover, which may be a refractory tile of any suitable material, aud cis a heavy strengthening and supporting rib cast with the box, and upon which the cover rests. d are the slabs ci' soapstone forming the refractory lining for the walls of the box. They may be placed up close to the walls, but Iprefer to leave a small space between them, as shown, for a packing of sand, which is poured in through the crevice at the top.

The supplementary bottoni e may be made of a piece of sheet-iron and held up by ribsf, secured to it by rivets or otherwise. I also reserve the right to use in connection with the slabs of soapstone on the sides a similar one on the bottom in place of the iron bottom c.

At g are shown the ribs cast on the bottom of the box for the purpose above set forth.

The supplementary bottom and sides having been put in place, the inner space is completely filled with carbons h, points downward, as shown. Sand is then poured in until all the intersticesj are nlled and the carbone covered about an inch deep. The cover is then put in place on the rib c and sealed with refractory luting t'.

A box constructed and protected in this way will stand a great many successive beatings without injury, and when the iron does give way the refractory slabs still prevent injury to the carbons.

Having thus described my improvements, what I claim as new and of my invention is-- l. A receptacle for holding carbons during the baking process, consisting of a metal box provided with a cover, and independent slabs IOO or plates of refractory material, substantially as described, located adjacent to the inner sides of the boX, substantially as set forth.

2. A receptacle for holding carbons during the baking process, consisting of a metal boX provided with a cover, and slabs or plates of refractory material as described, situated within the box at its sides and ends, substantially as set forth.

8. A receptacle for holding carbons during the baking process, consisting of a metal box having a lining of refractory material, and having a supplemental floor or bottom provided With heat circulating spaces on its under side, substantially as set forth.

4. A receptacle for holding carbons during the baking process, consisting of a cast metal boX having alining of refractory material and having inwardly-projecting ribs or ledges, in combination with a cover adapted to be supported on said ribs or ledges, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two Witnesses, this 5th day of April, 1884.

WILLIAM J. POSSONS.

Witnesses:

W. H. KNIGHT, N. S. PossoNs.

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