US130952A

US130952A - Improvement

Info

Publication number: US130952A
Authority: US
Publication date: 1872-08-27
Anticipated expiration: 1889-08-27

Description

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D. M. SPROGLE. Improvement in the Manufacture of Artificial-Stone. N0.130,952 jZ j Patented Aug. 27, 1872.

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UNITED STATES PATENT OFFICE.-

DANIEL M. SPROGLE, OF ANNAPOLIS, MARYLAND.

IMPROVEMENT IN THE MANUFACTURE 0F ARTIFICIAL STONE.

Specification forming part of Letters Patent No. 130,952, dated August 27, 1872.

To all whom it may concern:

Be it known that .I, DANIEL M. SPROGLE, of Annapolis, in the county of Anne Arundel and State of Maryland, have invented a new and lmproved Process for Treating Concrete; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing making part of this specification, in Which- Figure 1, Plate 1, is a perspective view of the apparatus complete. Fig. 2, Plate 1, is a section taken vertically and transversely through the apparatus. Fig. 3, Plate 2, is a section taken vertically and longitudinally through the kiln. Fig. 4, Plate 2, is a top View of the apparatus with the cover removed.

Similar letters of reference indicate corre-. sponding parts in the several figures.

Thisinventionrelates to improvements which are designed for curing or solidifying cement, in the process of manufacturin g artificial stone, by subjecting it to the action of carbonic-acid gas ina close chamber-a kiln-as will be hereinafter explained.

The following description of my invention will enable others skilled in the art to understand it. p

In theaccompanyin g drawing, Fig. 1, I have represented an external view of the furnace, the steam-generator, and the kiln. The kiln D is of a rectangular form, and is composed of sills a, caps a, vertical studs 0, and rabbeted side, end, and top boards, which latter are received into grooves in the frame pieces. A kiln constructed in this manner is very substantial, tight for all practical purposes, and may be readily taken down or put up, This kiln I shall not claim under this petition for Letters Patent, as it forms the subject of a separate application forLettersPatent,marked case B, and bearing even date with the filing of this. The molded objects are inclosed in the kiln D and subjected to the action of carbonic-acid gas. This gas is generated in a charcoal-furnace, F, and conducted through a pipe, it, into the kiln. The furnace F is provided with a grate, f, a feed-opening, which is closed by a tightly-fitting door, f, and also with draft-inlets, which are provided with slid- In the upper part of the furnace F a boiler, G, is applied, which is designed for generating steam to be mixed with the carbonic-acid gas on its way into the kiln.

The steam is conducted into the pipe h by means of a pipe, 1', so that the mixture of the gas and steam takes place in the pipe h outside of the kiln. By means of the vertical pipe I, which terminates above in a funnel, and which extends down nearly to thebottom of theboiler G the boiler is supplied with water and prevented from explosion. The cock g in the boiler indicates the height of water therein. The gas and steam enter a horizontal distributer, H, which is arranged inside of the kiln, and which is suitably perforated for discharging the gas and steam in jets. Directly opposite the distributer H is a rose-nozzle, G, which is finely perforated, and which communicates, by means of a pipe, either with an elevated reservoir of water, or with a forcing-pump. The water from the rose-nozzle will rapidly reduce the temperature of the gas and vapor so that they will be cold when they reach the cement beneath.

I am aware that steam and carbonic-acid gas have been used before my invention in the manufacture of artificial stone, such being described in J. L. Rowlands patent, November 9, 187 0; but 1 am not aware that they have ever been intimately mixed together before they were conducted into the curing-kiln, as above described.

The steam issuing from the boiler and the carbonic-acid gas escaping from the furnace both enter a small pipe leading into another pipe, which is finely perforated, and arranged within the kiln. The two products are thus brought intimately together, and the molecules of water readily absorb the carbonicacid gas, and are highly charged with it before entering the kiln-chamber. The mixture then issues into this chamber in the form of spray, when it is instantlycooled down by jets of water directed through it. In this way and by these means the watery vapor is made to serve as a vehicle for conveying the gas into the substance of the concrete, said vapor being rapidly taken up by the absorbing power of the concrete. ter and gas are introduced separately into the kiln-chamber and there had to mix, a very imperfect mixture would be the result, as the watery particles would descend more rapidly than the gas and charge the concrete blocks It is obvious that if the wa-' artificial stone, of carbonic-acid gas and steam, when mixed together on their way from the generators into the curing-kiln, substantially as described.

2. The introduction of cool Water in spray into the kiln so as to cool down the carbonicacid gas and vapor as they escape from the distributer, substantially as described.

DANIEL M. SPROGLE.

Witnesses J. N. CAMPBELL, R. T. CAMPBELL.