IMPROVEMENTS IN GAS AND PETROLEUM ENGINES
Year: 1879

page_text: A com-
LETTERS PATENT to Friedrich Carl Glaser, of Berlin, in the Kingdom of
Prussia, and Empire of Germany, Civil Engineer and Patent Agent, for the
Invention of "IMPROVEMENTS IN GAS AND PETROLEUM ENGINES."
munication from Wilhelm Wittig and Wilhelm Hees, of Hanover, in the
Kingdom of Prussia and Empire of Germany.
aled the 5th March 1880, and dated the 17th September 1879.
PROVISIONAL SPECIFICATION left by the said Friedrich Carl Glaser at the
Office of the Commissioners of Patents on the 17th September 1879.
FRIEDRICH CARL GLASER, of Berlin, in the Kingdom of Prussia, and Empire of
Germany, Civil Engineer, and Patent Agent. "IMPROVEMENTS IN GAS AND
PETROLEUM ENGINES." A communication from Wilhelm Wittig and Wilhelm Hees,
of Hanover, in the Kingdom of Prussia, and Empire of Germany.
The motor represented in the accompanying Drawings may be worked either
with illuminating gas or with fluid distillations of petroleum. The modifications
which are rendered necessary by the one or other method of application may be
easily effected.
Figure 1 of the Drawings represents in front elevation, partly in section an
engine embodying this Invention, Figure 2 being an end elevation, and Figure 3
a sectional plan view of same, Figures 4 to 9 inclusive showing detached parts
draw to a larger scale.
The piston r, Fig. 1, in the pump cylinder a draws through the valve b, Fig. 7, a
mixture of atmospheric air and gas, and compresses the same up to a certain density,
whereupon the valve e is opened by the eccentric on the wheel shaft d, suitably
arranged for that purpose; the gas-mixture raises the back valve f, and passes into
the working or driving cylinder h, where it is set on fire by a suitable firing
arrangement, and serves as the driving power.
i is an outlet valve, which on the downstroke of the working piston is open by
the eccentric l, so that the combustible gases may escape. Both cranks 8 and t are
The pump
similarly arranged, and are at the dead point at the same time.
piston travels close on to the bottom of the cylinder whilst the working piston
remains a certain distance therefrom. After the pump piston has compressed the
mixture to a certain degree, the valve e opens, and the mixture passes to, and

page_text: expands in the working cylinder, which shortly before hand is shut off from
communication with the exterior by the valve . Thenceforth both pistons work
simultaneously, compressing to the bottom of their stoke, and at the end thereof
the whole of the mixture is in the aforesaid free space or chamber of the working
cylinder. At this moment the sliding part u with its firing arrangement operates
the explosion.
The above described method of operating the engine refers to the use of gas. In
the case of the employment of distillations of petroleum, air only is drawn in
through the valve b, the small conduits for the supply of gas being dispensed with.
Simultaneously with the lifting of this valve the small valve c, Figures 8 and 9,
which until then had closed the petroleum supply pipe q is raised, and a fine jet of
this fluid in the form of ashower is drawn in. When the piston r descends the small
valve c closes, and the heat produced by the compression changes the petroleum into
vapor, which mixes with the air, and forms an explosive mixture. Thenceforth the
process is effected as previously in the case of illuminating gas, the flame of an
ordinary petroleum lamp serving as iguiting flame.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Friedrich Carl Glaser in the Great Seal Patent Office on the
11th March 1880.
FRIEDRICH CARL GLASER, of Berlin, in the Kingdom of Prussia, and Empire of
Germany, Civil Engineer and Patent Agent. "IMPROVEMENTS IN GAS AND
PETROLEUM ENGINES." A communication from Wilhelm Wittig and Wilhelm
Hees, of Hanover, in the Kingdom of Prussia, and Empire of Germany.
The motor represented in the accompanying Drawings may be worked either
with illuminating gas, or with fluid distillations of petroleum. The modifications
which are rendered necessary by the one or the other method of application may be
easily effected.
.
Figure 1 of the Drawings represents in front elevation, partly in section, an
engine embodying this Invention, Figure 2 being an end elevation, and Figure 3
a sectional plan view of same, Figure 4 to 9 inclusive showing detached parts
drawn to a larger scale.
The piston 7, Fig. 1, in the pump cylinder a draws through the valve b, Fig. 7, a
mixture of atmospheric air and gas, and compresses the same up to a certain density,
whereupon the valve e is opened by the eccentric d on the fly wheel shaft, suitably
arranged for that purpose; the gas mixture raises the back valve f, and passes into
the working or driving cylinder h, where it is set on fire by a suitable firing
arrangement, and serves as the driving power.
i is an outlet valve, which on the down stroke of the working piston, is opened
by the eccentric 7, so that the combustible gases may escape. Both cranks s and t
are similarly arranged, and are at the dead point at the same time. The pump
piston travels close on to the bottom of the cylinder, whilst the working piston
remains a certain distance therefrom. After the pump piston has compressed the
mixture to a certain degree, the valve e opens, and the mixture passes to, and
expands in the working cylinder, which shortly before hand is shut off from
cominunication with the exterior of the valve i. Thenceforth both pistons work
simultaneously, compressing to the bottom of their stroke, and at the end thereof
the whole of the mixture is in the aforesaid free space or chamber of the working
cylinder. At this moment the sliding part u with its firing arrangement operates
the explosion.
The above described method of operating the engine refers to the use of
gas. In
the case of the employment of distillations of petroleum air only is drawn in
through the valve b, the small conduits for the supply of gas being dispensed with.
Simultaneously with the lifting of this valve the small valve c, Figs. 8 and 9, which
until then had closed the petroleumn supply pipe q, is raised, and a fine jet of this fluid
in the form of a shower is drawn in..When the piston r descends the small valve c
closes, and the heat produced by the compression changes the petroleum into
vapour, which mixes with the air, and forms an explosive mixture; thenceforth the
same process is effected as previously in the case of illuminating gas, the flame of
an ordinary petroleum lamp serving as igniting flame.
Having now described and ascertained the nature of the Invention communicated
to me as aforesaid, and in what manner the same is or may be performed, what-
I claim as improvements in gas and petroleum engines secured to me by the
herein before in part recited Letters Patent, are,-
1. The section and compression of an explosive gas-mixture so arranged that
when both cranks are at the dead point the mixture compressed by both pistons
(working and pump-pistons) shall be in the working cylinder only substantially as
described.
2. The simultaneous suction of air and fluid distillations of petroleum, as also
the compression attendant thereon, both serving for the formation of an explosivo

page_text: mixture by means of arrangements, substantially as represented in Figs. 8 and 9 of
the Drawings, and hereinbefore described.
3. The use of a back valve and of a valve worked from the engine for the
attainment of the method of working mentioned in claim 1, substantially as
described.
In witness whereof, I, the said Friedrich Carl Glaser, have hereunto set my
hands and seals, this Twenty seventh day of February, in the year of our
Lord One thousand eight hundred and eighty.
F. C. GLASER. (L.S.)
J