US1031505A

US1031505A - Process of manufacturing artificial blocks.

Info

Publication number: US1031505A
Application number: US63940311A
Authority: US
Inventors: Marcus P Andrews
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-07-19
Filing date: 1911-07-19
Publication date: 1912-07-02
Anticipated expiration: 1929-07-02

Description

MARCUS P. ANDREWS, OF PETERSBURG,-VIRGINIA.

PROCESS OF MANUFACTURING ARTIFICIAL BLOCKS.

menace.

N Drawing.

1T0 all whom "if may concern:

Be it known that I, MARCUS P, ANDREWS,

residing at Petersburggin the county of Dinwiddie and State of Virginia, have invented certain new and useful Improvements in Processes of Manufacturing Artificial Blocks, of which the following is a specification.

This invention is an improved process of manufacturing artificial blocks which are" composed of wood fiber, a preservative, and a binding material.

in carrying out my invention, I first take the wood fiber, (preferably in the form of saw dust or the like), and dry it by the action of dry steam, (superheated steam), and then immediately pass the wood fiber into a vapor of dry steam, containing a preserv;

'ative, say for example, creosote,'until the required amount of preservative has been taken up by the wood fiber. Next the preserved wood fiber is passed through a bath of the binding material say, a bath of asphaltum, which is maintained in a liquid state by the atmosphere of dry steam, the preserved Wood being thoroughly mixed with the binding material while inthe presence of the atmosphere of steam. The wood fiber having been creosoted and then intro-' duced into the bath of the binding material (such as asphaltum hydroline or the like), and thoroughly mixed, is placed, while hot, in individual molds and suitable pressure is applied thereto to compress the fluid or viscous mass in the molds, and the motds are at the same time, i. a, while the pres ure is applied, subjected to the action of a blast of cold air, or other refrigerant, whereby the contents of the molds will be rapidly cooled while under'pressure The cooling of the contents of the molds while under pressure produces a hard block or brick, it being understood that the molds are of such shape and size as 'to give to the brick the requiredconfiguration.

The use of an atmosphere of dry steam of a uniform temperature throughout the process of preparing the material for the molds insures a uniform temperature throughout; insures the action taking place in a dry atmosphere to substantially prevent moisture being taken up by the mass, and insures a greater uniformity in the final product than is possible to obtain b other processes. Af-

ter the bricks have con molded they are Specification of Letters Patent.

Patented July 21,, 1912..

Application filed July 19, 1911. Serial No. 639,403.

ready for use and may be used where ever found convenient.

From the foregoing, it will be noticed the wood fiber is subjected to the action of dry steam to drive out its fluid constituents, and thereby dry the same. After the fiber has been so treated it is maintained in its dry state for the reason that the entire succeeding operations up to the operation of molding, take place in the presence of an atmosphere of dry steam of a substantially constant temperature which serves to maintain a constanttempe'rature and humidity in the chambers in which the operations are taking place. l

Bricks formed by my process are absolutely free of moisture and thus they are not rendered porous or subjected to rapid disintegration, By cooling the molds and their contents at the same time that pressure is applied a much harder and compact brick is obtained than is possible otherwise, and a brick that is less liable to disintegrate is consequently produced. i

" The brick which I manufacture, particularly by 'my process is that which forms the subject-matterof my application filed June 16, 1910, Serial No. 567 ,303, and in th1s application I lay no claim to any particular brick, as the'particular composition of the brick will be varied to "suit the exigencies of the case, the essential'features of the present invention residing in the'process employed whereby a uniform product can be obtained.

From the foregoing it is believed that the phere of dry steam passing the preserved product into a bath of viscous binding material which is kept at a constant temperature and constitution by the presence of the at mosphere of steam, and then taking the mass and placing it into molds to mold it into shape and cooling the same.

2. The process of manufacturing artificial blocks or bricks which consists in introduc ing wood fiber into an atmosphere of dry or superheated steam to dry the fiber," then, while maintaining the atmosphere of dry steam, introducing, the dried fiber into a vapor of dry steam containing a preservative, then while still maintaining the atmosphere of dry steam passing the preserved product into a bath of Viscous binding material which is kept at a constanttemperature and constitution by the presence of the atmosphere of steam, and then placing the mass into molds, subjecting the mass while in the molds to pressure and while the mass dium, allof the foregoingoperations taking place in the atmosphere of dry steam whereby to maintain a uniform temperature and humidity, and then molding the product so obtained in the desired forml 4. The process of manufacturing artificial blocks whichconsists in taking wood fiber,

subjecting it to the action of an atmosphere. of dry steam, subsequently subjecting the fiber to the action of a dry steam Vapor containing creosote and then introducing the mass into a bath of a liquid binding medium, allof the foregoing operations taking place in the atmosphere of dry steam whereby to maintain a uniform temperature and humidity, and then placing the product so obtained into molds, compressing the product in the molds and simultaneously acting on the molds with a rapid cooling agent to rapidly coolthe contents of the molds while under pressure. p

- 5. The process of manufacturing artificial blocks which consists in taking wood fiber and dryin then introducing said wood fiber-into a vapor containing creosote until said wood fiber has absorbed a definite amount ofcreosote,

it by the action of dry steam,

then-introducing said creosoted wood fiber into a fluid bath of a binding medium, and mifiing the same together, the foregoing operations all taking place in an atmosphere of superheated steam whereby to maintain a constant temperature and humidity and maintain such binding material in the fluid state, and subsequently taking the resultant product, placing it into molds under pressure and cooling the product while in the molds under pressure. MARCUS P. ANDREWS.

Witnesses:

P. S. PUGH' GRACE W. ldmrnnn.