US178491A - Improvement in tanks for asphaltic cement - Google Patents

Description

C. M. WARREN.

TANK FOR ASPHALTIC CEMENT.

No. 178,491. Patented June 6,1876.

N.PEHS, PHOTO-L1TMOGRAFNER. WASHINGTQN. D C.

UNITED STATES CYRUS M. WARREN, OF BROOKLINE, MASSACHUSETTS.

IMPROVEMENT IN TANKS FOR ASPHALTIC CEMENT.

Specification forming part of Letters Patent No. 178,491, dated June 6, 1876,: application filed December 3, 1875.

To all 'whom it may concern Be it known that I, CYRUs M. WARREN, of Brookline, in the countyrof Norfolk and State of Massachusetts, have invented a new and useful Improvement in Tanks for Asphaltic Cement, which improvement is fully set forth in the following specification, reference being had to the accompanying drawing, in Which- Figure l is a longitudinal section of my apparatus. Fig. 2 is an end view. Fig. 3 is a top view. Y

Similar letters indicate corresponding parts.

The object of my invention is an improvement in the construction of tanks designed to hold or transport the hot residuum resulting from tbe distillation of coal-tar.

At the common temperature this residuum of so-called asphalt, has ordinarily they consistency of pitch, but contains oils that are more or less volatile at the temperature at which it is usually employed for roofing, paving, or other purposes, and at which, or a higher temperature, it is sometimes desirable to transport it from the manufactory to the place of consumption, thereby avoiding` the necessity of cooling this material in barrels to be finally broken up and Wasted, and also the expense of remelting and reheating.

This asphalt is now carted along the streets of cities in air-tight tanks, with a iire underneath or within the mass of combustible material, which is heated to a high temperature. So long as the temperature is kept below the boiling-point, probably no accident from the bursting of this air-tight tank would be likely to occur, but to prevent the possibility of such an occurrence 1 attach a condenser to the top of the tank, so constructed as to prevent the escape of vapors to any injurious extent, and.

at the same time establish a communication between the interior of the tank and the external air. If the distance the material is to be transported is so great as to necessitate the application of heat in transit, this may be done by any of the methods employed for similar purposes, such as a furnace arranged in or under the tank, with hot-air or smoke-fines under or around the tank, or iiues passing through it, as in the common flue-boiler for generating steam.

The condenser, in the example ot my invention which is here shown, is placed on the upper side of the tank, and its top and bottom are pierced by open upright tubes, which communicate with the interior of the tank and with the open air, the upper side of the condenser being provided With a rim, Which surrounds the surfaces through which the tubes open, so as to make on the top of the condenser a receptacle into which the liquid asphaltum .is poured, and from which it is conveyed through the tubes into the interior of the tank. The space in the condenser which surrounds the tubes is filled With a suitable cooling material by means of a pipe, which rises through the top of the condenser and extends through the rim.

The letter A designates a tank or package for holding or transporting the so-called asphalt or residuum of coal-tar, provided With a suitable discharge-pipe and valve, B. The tank can be combined with any of the usual means for heating its contents-as, for example, with a furnace, C, under it, and suitable liues, which may surround or extend through v the tank. The tank is made of a convenient form for transportation to a greater or less distance, and upon its upper side is placed a condenser, D, provided with open tubes E ot' small diameter, which extend through the top and bottom of the condenser and open into the tank, the upper ends of the tubes opening through the top of the condenser into the open air. The top of the condenser is surrounded by a rim, F, which incloses the open tubes E, and forms a receptacle into which I pour the liquid residuum or asphalt, Which then enters the tank through the tubes E. The space within the condenser around the tubes E is filled with a suitable cooling material, for the purpose of condensing the vvapors rising from the heated asphalt and returning the product back again to the tank, and for this purpose I prefer some oil or other substance ot' a higher boiling-point than water,

although the latter can be used, it' preferred. The cooling materialis introduced into the condenser through the pipe G, which rises from the top Aof the condenser above the level of the rim.

My invention enables one to transport the asphalt, or other contents of the tank, in a heated state to the place where it is to be used, or to keep it until it is to be used, in a 'ATET GFFICE.

safe condition, the open tubes of the condenser serving to pervent the escape of vaporsy tending to injure the quality of the asphalt, and to prevent danger from overheating and from excessive pressure of the contents of the tank.

What I claim as new, and desire to secure by Letters Patent, is

The tank or package A, for holding or transporting heated asphalt, or other substances7 in i combination Withx a condenser, D, provided with open condensing-tubes E, serving also vhave hereunto set my hand and seal ,this 26th day of November, 1875.

GYRUS M. WARREN.

`Witnesses:

ALLEN LINCOLN, HBT. M. WARREN.

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