US588287A - Parker - Google Patents

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Publication number
US588287A
US588287A US588287DA US588287A US 588287 A US588287 A US 588287A US 588287D A US588287D A US 588287DA US 588287 A US588287 A US 588287A
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Prior art keywords
rock
compartment
parker
treatment
moisture
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F9/00—Designs imitating natural patterns
    • B44F9/04—Designs imitating natural patterns of stone surfaces, e.g. marble
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated

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  • the articles on the trucks 2, at l will serve to illustrate the idea. 'Almost any trimming in lieu of woodwork may be made, and pillars, knobs, brackets, dac., which need not be further described here.
  • the first step in the process is to dehydrate these articles made out of the native rock by the action of hot air at a temperature of approximately 330C Fahrenheit for twelve-hours, more or less, until the moisture in the native rock is eliminated.
  • a convenient plan is to load the articles formed from the rock onto a truck, as 2, on the track 5 and run it iirst into the hotair compartment 4. After the moisture has been eliminated the then calcium sulfate is porous and ready for cooling. iCooling the rock is the next step in the process.
  • a convenient plan of using the ammonia for this purpose is to connect with the tank or barrel 6 of aqua-ammonia a pipe 7 and connect this with an elongated perforated tube or tubes 8, located between the rails of the track 5 in the closed cooling-compartment 3, so as to be beneath the truck 2 when run into said compartment from the hot-air compartment 4.
  • the compartment 3 is designed to be located a sufficient distance away from the workmen so they will not be annoyed by the fumes, which are allowed to escape before the rock is removed for further treatment; but there is not enough ammonia required for each Vbatch of rock to seriously charge the open air when allowed to escape.
  • The'object of warming the solution is to prevent the bursting out of ⁇ particles of the rock, whichhas been my experience with the use of a cold bath of this solution, and to improve and accelerate the crystallization, which, I find, takes place almost immediately in the Warm bath.
  • the rock After having been thus treated the rock is allowed to dry and is then polished, presenting av hard surface of beautiful luster, which cannot be aectedlby frost or weather, and I have found that even muriatic acid will not affect it.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

(No Model.)y
'G. W. PARKER. PROCESS OF TREATING GYPSUM ROCK T0 IMITATRMARBLE.
No. 588,287. R Patented Aug. 17., 1897.
' [Uilm {HJ/HHH AUn-Imi!!!{Hummu'v an www" @vih/Lewes, R
35%? fluo/mw ma C MM UNITED j STATES PATENT Fries.
GEORGE IVASHINGTON PARKER, OF GRAND RAPIDS, MICHIGAN.
PROCESS OF TREATING GYPSUNI-ROCK TO llVllTATE MARBLE.
SPECIFICATION forming part of Letters Patent No. 588,287, dated August 17, 1897. Application filed October 18,1895. Renewed July 10, 1897. Serial No. 644,122. ,(No specimens.)
To @ZZ whom t may concern:
Be it known that I, GEORGE WASHINGTON PARKER, a citizen of the United States, residing at Grand Rapids, in the county of Kent,
State of Michigan, have invented a new and ical immersion to imitate marble; and it has for its object to facilitateand hasten crystallization, to obviate danger of the rock slacking and cracking during treatment, and to produce a more desirableproduet.
I carry my invention into effect/by the process described below.
In the drawing forming a part of this speciiication, which I have introduced to assist in describing the method, is shown a side elevation of a drying and cooling compartment. One wall of these compartments is broken away, showing the interior.
Prior to treatment by my process the native gypsum-rock, crude from the mines, is sawed and shaped by planing and turning into the desired configurations. Y
The articles on the trucks 2, at l, will serve to illustrate the idea. 'Almost any trimming in lieu of woodwork may be made, and pillars, knobs, brackets, dac., which need not be further described here. The first step in the process is to dehydrate these articles made out of the native rock by the action of hot air at a temperature of approximately 330C Fahrenheit for twelve-hours, more or less, until the moisture in the native rock is eliminated. A convenient plan is to load the articles formed from the rock onto a truck, as 2, on the track 5 and run it iirst into the hotair compartment 4. After the moisture has been eliminated the then calcium sulfate is porous and ready for cooling. iCooling the rock is the next step in the process. It has been my practice'prior to the present invention to cool the hotudehydrated rock by letting it remain for some time in the cool open air; but I und by this plan that the rock isv liable to slake more or less and crack, and, what is very objectionable, it becomes impregnated with moisture, which it takes from the open air, thus undoing to a' degree the treatment is more effectual.
work already accomplished and retardin g and diminishing crystallization in the after treatment. To obviate these difficulties, I allow the rock tocool in a compartment from which the outer air is excluded, and which compartment while the rock is in it is charged with the gas or fumes of ammonia. This greatly accelerates the cooling of the hot rock. It
'does not slake nor crack nor gather to itself the moisture from the outer air, for which reason it may be sooner subjected to the next treatment, and for which reason the next' A convenient plan of using the ammonia for this purpose is to connect with the tank or barrel 6 of aqua-ammonia a pipe 7 and connect this with an elongated perforated tube or tubes 8, located between the rails of the track 5 in the closed cooling-compartment 3, so as to be beneath the truck 2 when run into said compartment from the hot-air compartment 4.
The compartment 3 is designed to be located a sufficient distance away from the workmen so they will not be annoyed by the fumes, which are allowed to escape before the rock is removed for further treatment; but there is not enough ammonia required for each Vbatch of rock to seriously charge the open air when allowed to escape.
While the rockis cooling, a bath cornposed of a solution of aluminium sulfate is prepared and heated to approximately 100O Fahrenheit. As soon as the rock is cool I immediately immerse it in this warm solution for a short time until the pores are filled.
The'object of warming the solution is to prevent the bursting out of` particles of the rock, whichhas been my experience with the use of a cold bath of this solution, and to improve and accelerate the crystallization, which, I find, takes place almost immediately in the Warm bath. After having been thus treated the rock is allowed to dry and is then polished, presenting av hard surface of beautiful luster, which cannot be aectedlby frost or weather, and I have found that even muriatic acid will not affect it.
Having thus described my invention, what ICO im i i I I I i moisture from the rook by the action of hoi'J In testimony of lche foregoing I have hereair, then removing the then hob calcium suluuto subscribed my name in the presence of fate into a closed compartiment, charged with nwo witnesses. the fumes of ammonia, and then immediately 5 immersing,r the cool rook in a Warm solution VitiieSses:
of aluminium sulfate until the pores are filled, XVM. J. STUART, substantially as set forth. ETTA M. MONTGOMERY.
GEORGE 'ASIIING'ION PARKER.
US588287D Parker Expired - Lifetime US588287A (en)

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