US100433A

US100433A - Improved compound for the manufacture of illuminating-gas

Info

Publication number: US100433A
Authority: US
Publication date: 1870-03-01
Anticipated expiration: 1887-03-01

Description

me is mineral oil.

UNITED STATES PATENT OFFICE.

' GEORGE MCKENZIE, 0 GLASGOW, soorLANfi.

IMPROVED COMPOUND FOR THE MANUFACTURE OF ILLUMINATING-GAS.

8peeification forming part of Letters Patent No. 100,433, dated March 1, 1870.

To all whom it may concern.-

Be it known that I, GEORGE MCKENZIE, of

. Glasgow, Scotland, have invented a new and useful Compound for the Manufacture of Illuminating-Gas, of which thefollowing is a speciiication.

were issued to me, numbered 66,511, for a compound for a purpose similar to the one stated above. That was also a compound of pulverized coal and oil; but'the oil to which the literal construction of the language of the specification annexed to that patent would limit Since obtaining that patent I have ascertained by experiment that other oils beside mineral will serve'the purpose, and I therefore desire and intend in this specification to cover and extend my claim to serve the intended purpose so far as relates to enriching the illuminating gas-producingqualities of coal is concerned; but practically a considerable number of them are too costly to enable them to be economically used. The oil from rosin and the residuum named will often be found sufficiently cheap and abundant to render their use for the purpose indicated practicable. The method of combiningpulverized coal with these substancesis substantially the same as that described in the patent referred I to for compounding it with mineral oil. The coal is to be first ground in a suitable mill, and then the non-mineral oil or oleaginous substance is to be ultimately incorporated with it by regrinding or in some other suitable man- I The proportions of oleaginous substance and coal will vary according to the quality of each and the degree of illuminating-power required in the gas to be made from the compound. I have found that when about thirty gallons of rosin-oil is mixed with a ton of pulverized coal it will raise the illuminating-power of the gas someten or twelve candles. It will usually be found that the incorporation will be most readily and easily effected with theoil when the oil and coal are both heated sufficiently to keep the oil in a very completely fluid state during the operation. To preserve the required fluidity of these oils, it will be found that a small quantity of some of the lighter mineral oils or their extracts can be mixed with the non-mineral oily substances to advantage, and rosin maybe dissolved in some suitable solvent instead of being distilled, ifipret'erred. I prefer however, to use the non-mineral oil in a hot state, as it then more readily combines with the pulverized coal. The more thoroughly the coal and oil are incorporated together the more regularly the compound gives offits gas in the process of distillation in the gas-retort, as the coal will not, if thoroughly combined with the oil, let go the gas from the oil until it is itself also carbonized.

I do not intend to limit myself to any particular nonmineral oil, nor to any special method of incorporatingthe oil and pulverized coal.

What I do claim, and desire to secure by Let.- ters Patent, is-- The compound composed of pulverized coal and a non-mineral oleaginous substance, substantially as and for the purpose specified.

GEORGE MCKENZIE.

Witnesses:

J. P. FrrcH, THOS. A. MAsrEasoN.