IMPROVEMENTS IN THE MANUFACTURE OF GAS AND IN THE APPARATUS FOR HOLDING THE SAME;
Year: 1867

page_text: PROVISIONAL SPECIFICATION. left by Peter Salmon at the Office of
the Commissioners of Patents, with his Petition, on the 2nd May
1867.
I, PETER SALMON, of No. 6, Great Smith Street, Westminster, in the
County of Middlesex, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF GAS AND IN THE APPARATUS FOR
HOLDING THE SAME;" to be as follows:-
My Invention has for its object the production of gas to give a clear bright
light for illuminating or lighting, also of a flame or flames of great generating
power for warming, cooking, raising of steam, or other purposes, and of dry
gasholders or receivers to contain said gases, and consists, in the first place, in
the admission of a jet or jets of superheated steam into a closed vessel, filled
or partly filled with spirit, oil, or other fatty substance, combined with or
separated from the warming or the raising of the temperature of the said
spirit; oil, or other fatty matter by steam surface heat either applied to the
vessel itself or by coils or tubes fitted in the interior thereof: These vessels
or gas generators may be combined with a steam boiler or vessel for raising
steam from water in one apparatus, or used separately where a supply of steam
is at hand. If the steam boiler is wished to be increased in its generating
power it is fitted in the interior with coils or tubes through which the flames
and hot air circulate or pass on their way to the chimney; and the steam is
superheated by inserting tubes or coils of pipe in the furnace or flews of the
apparatus boiler or contiguous boiler, through which the steam passes on its

page_text: way to the gas generater containing spirit, oil, or other fatty matter; these
vessels or gas generaters are fitted with test burners, safety valves, pressure
guages, regulating valves, supply tubes, and stop-cocks, when wished, and the
boiler for raising the steam has also the usual appliances of safety valve,
guage cock, guage glass, pressure guage, supply tube, and stop-cocks.
My Invention, in the second place, consists in the mixing or infusing of the
superheated steam prepared, in the manner described in the first place, with the
vapour or gas obtained from spirit, oil, or other fatty matter evaporated by
fire heat or flame from gas or oil before or previous to being conducted to
the burners, or gasholder, or receiver.
And my Invention, in the third-place, consists in the use of dry gasholders
or receivers made to work without the use of water; this is effected by
inserting a gas-tight division in the bolder or receiver, consisting of an iron or
other plate of the exact shape of the interior of the same, round the edges-of-
which plate india-rubber or other flexible material is fixed to make it gas-tight
in traversing the interior of the said holder or receiver, and the said division plate
is mounted with one or more polished rods which pass through the top or cover
of said holder or receiver, on which are fixed stuffing boxes to make the passage
of the rods air-tight; and the said rod or rods not only serve as guides, but
also act as indicators of the position of said division plate, whereby is ascer-
tained at any time the quantity of gas contained in the holder or receiver as it
rises or falls with the increase or decrease of the supply of gas, and is weighted
on top to suit the pressure of gas required.