US174648A - Improvement in concrete pavements - Google Patents

Improvement in concrete pavements Download PDF

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Publication number
US174648A
US174648A US174648DA US174648A US 174648 A US174648 A US 174648A US 174648D A US174648D A US 174648DA US 174648 A US174648 A US 174648A
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improvement
concrete pavements
rock
pulverized
petroleum
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00Compositions of bituminous materials, e.g. asphalt, tar, pitch

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Disintegrating Or Milling (AREA)
  • Road Paving Structures (AREA)

Description

UNITED STATES PATENT OFFICE.
AARON VAN CAMP, OF WASHINGTON, DISTRICT OF COLUMBIA.
IMPROVEMENT IN CONCRETE PAVEMENTS.
Specification forming part of Letters Patent No. 174,648, dated March 14, 1876; application filed.
. August 27, 1675.
To all tvhom it may concern:
Be it known that I, AARON VAN CAMP, of Washington city, in the county of \Vas'hington and D strict of Columbia, have invented certain new and useful Improvements in Concrete Pavements for Streets and Sidewalks; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same.
I take crushed and pulverized rock, sixty per centum ot the finer pulverized portion, and forty per cent. of the coarser. The crushing and pulverizing process should be continued until the even or naturally smooth surface of the stone is entirely destroyed. The object of crushing and pulverizing the rock is to obtain sharp angles and rough surfaces. I use the blue limestone; but it is evident that any hard rock, bowlder, or gravel,when crushed and pulverized, will answer my purpose. The
rock thus crushed and pulverized I subject to heat, so as to expel the moisture. I then add dead-oil, crude petroleum, or the residuum of petroleum until the rock becomes perfectly saturated. While thus heated I add about twenty per cent. of natural asphlaltum,
Cuban, Trinidad, or California, that has been previously dissolved by crude petroleum, or
forniTaj p reviously dissolved to a pitch by--' crude petroleum or the residuum of petroleum, substantially as described, and for the purpose set forth.
In testimony that I claim the foregoing as my. own I affix my signature in presence of two witnesses.
AARON VAN CAMP.
'Witnesses:
H. D. ()LER, THOMAS J. SHEA.
US174648D Improvement in concrete pavements Expired - Lifetime US174648A (en)

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