Operated by the Combustion of Benzoline or other Liquid Hydrocarbons.
Year: 1885

page_text: Operated by the Combustion of Benzoline or other Liquid
Hydrocarbons.
"
We, WILLIAM DENT PRIESTMAN, and JOHUA PRIESTMAN, of Holderness
Foundry, Hull, in the County of York, Engineers, do hereby declare the nature
of our invention for IMPROVEMENTS IN THE CONSTRUCTION AND WORKING OF
MOTOR ENGINES OPERATED BY THE COMBUSTION OF BENZOLINE OR OTHER LIQUID
HYDROCARBONS "to be as follows:-
In working motor engines in which the pistons are directly operated by the
combustion of benzoline, petroleum or other bydro-carbon fuel, it has been usual to
employ the movement of the piston for the purpose of drawing into the cylinder at
each stroke or revolution of the engine a regulated quantity of the said fuel as also
a suitable charge of atmospheric air for supporting the combustion of the same.
The hydrocarbon being then ignited, the heated gases resulting exert pressure on
the piston.
According to our improved system of construction and working we intimately
mix the liquid hydrocarbon with air, this process preferably taking place under
pressure. A charge of this mixture is then introduced into the working cylinder
in the presence of a body of atmospheric air at considerable pressure and ignited by
means of electricity or otherwise.
The compressed air for supporting combustion and absorbing heat may however
be mixed with the air holding the hydrocarbon in suspension previously to their
arrival in the working cylinder.
By these means a large quantity of air is available for the absorption of the heat.
resulting from the combustion of the fuel, and a high degree of expansion is
attainable before the gases cease to act upon the piston.

page_text: Improvements in the Construction and Working of Motor Engines
Operated by the Combustion of Benzoline or other Liquid
Hydrocarbons.
We, WILLIAM DENT PRIESTMAN and JOSHUA PRIESTMAN, of Holderness
Foundry, Hull, in the County of York, Engineers, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
In working motor engines in which the pistons are directly operated by the
combustion of benzoline, petroleum, or other liquid hydrocarbon fuel, it has been
usual to employ the movement of the piston for the purpose of drawing into the
cylinder at each stroke or revolution of the engine a regulated quantity of the said
fuel as also a suitable charge of atmospheric air for supporting the combustion of
the same.
The hydrocarbon being then ignited, the heated gases resulting exert
pressure on the piston.
According to our improved system of construction and working, we intimately
mix the liquid hydrocarbon with air, this process taking place under pressure.
A charge of this mixture is then introduced into the working cylinder in the
presence of a body of atmospheric air at considerable pressure, such body of air
having been compressed in the working cylinder or in a separate vessel. The
inflammable charge is then ignited by means of electricity or otherwise.
The body of compressed air for supporting combustion and absorbing heat may,
however, be mixed with that holding the liquid hydrocarbon in suspension
previously to its arrival in the working cylinder.
By these means the combustion of the fuel is rendered more perfect, a large
quantity of air is available for the absorption of the heat resulting therefrom, and
a high degree of expansion is attainable before the gases cease to act upon the
piston.
Having thus particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that, in
working liquid hydrocarbon engines, we make no general claim to separately com-
pressing bodies of atmospheric air and of air previously permeated with liquid
hydrocarbon, these being subsequently brought together in the working cylinder or
mingled in a vessel whence the working cylinder draws its supply; but in working
engines of this class we claim :-
-:
The improved method of preparing the mixture constituting the inflammable
charge, by compressing the air approximately to the pressure at which the charge
is to be used in the working cylinder and then permeating the same with the
liquid hydrocarbon.