This difficulty was overcome by first filling the cylinder with porous briquettes and then soaking them with a fixed percentage of acetone, so that after allowing for the space taken up by the bricks the quantity of acetone soaked into the brick will absorb ten times the normal volume of the cylinder in acetylene for every atmosphere of pressure to which the gas is subjected, whilst all danger of explosion is eliminated.
Trapezettes and Briquettes.=A figure of the kind described in § 39 is called a trapezette.
The briquette may usually be regarded as divided into a series of minor briquettes by two sets of parallel planes, the planes of each set being at successively equal distances.
The data are usually the breadths H and K and either (i) the edges of the minor briquettes, viz.
Of the minor briquettes, i.e.
The formulae of § 82 can be extended to the case of a briquette whose top has close contact with the base all along its boundary; the data being the volumes of the minor briquettes formed by the planes x =x0, x = x i,
If the data of the briquette are, as in § 86, the volumes of the minor briquettes, but the condition as to close contact is not satisfied, we have y "`x P u dx dy = K + L + R - X111010-0,0 f xo yo i'?
The exports of greatest value are textiles, lace, coal, coke, briquettes, glass, machinery, railway material and fire arms.
Deval, who has shown that briquettes of 3 of sand and 1 of cement kept in water for two days at 80° C. =176° F.
Attain approximately the same strength as similar briquettes attain at seven days in water at the ordinary temperature.
In like manner briquettes kept at 176° F.