Improvements in Gas and Oil Engines and other Hydro-carbon Motors.
Year: 1892

page_text: Date of Application, 10th Mar., 1892
Complete Specification Left, 9th Dec., 1892-Accepted, 14th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in Gas and Oil Engines and other Hydro-carbon
Motors.
We, JAMES EDWARDES WEYMAN, ARTHUR JAMES DRAKE, and JAMES
ARTHUR DRAKE, of the Church Acre Iron Works, Guildford, in the County of
Surrey, Mechanical Engineers, do hereby declare the nature of our said invention
for "IMPROVEMENTS IN GAS AND OIL ENGINES AND OTHER HYDRO-CARBON
MOTORS," to be as follows:-
The object of our invention is to lessen, deaden or silence the noise caused by the
exhausted gases as they escape, from the cylinders of gas, oil or other hydro-carbon
motors, into the atmosphere. We effect this by providing a chamber or chambers
or succession of chambers into which the exhaust from the cylinder has to pass
before it is discharged into the atmosphere and as the principle of our invention is
the same whether one or more such chambers are employed a description of a
two chambered arrangement will suffice.
The chambers are formed and placed so as to receive the gases as they are
exhausted from the engine cylinder; between the first and second chamber we
provide a passage which is controlled by a valve worked by the engine or other
means so as to open and close the communication between the first and second
chamber at intervals corresponding with the strokes of the engine, the passage
being closed between the first and second chamber during the time the exhaust
from the cylinder passes into the first chamber and being opened immediately
afterwards when expansion of the exhaust gases in the first chamber has taken
place, in this manner the exhaust gases are allowed to pass into the second chamber
and thence into the atmosphere quietly and without noise.
To provide for explosions, which might occur in the first chamber, we construct
the valve which controls the passage between the two chambers with a spring by
means of which the gas may find vent through the passage independently of the
ordinary action of the valve.
In some cases where only one chamber is employed the exhaust of the gases,
from the same, into the atmosphere, is regulated and controlled with a valve with
similar provision for explosions and worked in the manner as already described for
the double chambered arrangement.
R. HEBER RADFORD,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Gas and Oil Engines and other Hydro-carbon
Motors.
We, JAMES EDWARDES WEYMAN, ARTHUR JAMES DRAKE, and JAMES
ARTHUR DRAKE of the Church Acre Iron Works, Guildford, in the County of
Surrey, Mechanical Engineers, do hereby declare the nature of our said invention
for "IMPROVEMENTS IN GAS AND OIL ENGINES AND OTHER HYDRO-CARBON
MOTORS," and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
The object of our invention is to lessen, deaden or silence the noise caused by the
exhausted gases as they escape from the cylinders of gas, oil or other hydro-carbon
motors into the atmosphere. We effect this by providing a chamber or chambers
FD017

page_text: or succession of chambers into which the exhaust from the cylinder has to pass
before it is discharged into the atmosphere, and as the principle of our invention is
the same whether one or more such chambers are employed, a description of a
two chambered arrangement will suffice.
The chambers are formed and placed so as to receive the gases as they are
exhausted from the engine cylinder, between the first and second chamber we
provide a passage which is controlled by a valve worked by the engine or other
means so as to open and close the communication between the first and second
chamber, at intervals corresponding with the strokes of the engine, the passage
being closed between the first and second chamber during the time the exhaust
from the cylinder passes into the first chamber and being opened immediately
afterwards when expansion of the exhaust gases in the first chamber has taken
place, in this manner the exhaust gases are allowed to pass into the second chamber
and thence into the atmosphere quietly and without noise.
To provide for explosions which might occur in the first chamber, we construct
the valve which controls the passage between the two chambers with a spring by
means of which the gas may find vent through the passage independent of the
ordinary action of the valve."
In some cases where only one chamber is employed the exhaust of the gases
from the same into the atmosphere is regulated and controlled with a valve with
similar provision for explosions and worked in the manner as already described for
the double chambered arrangement.
The nature of our invention will be better understood on reference to the
accompanying sheet of drawings in which
Fig. 1, is a sectional elevation of a two chambered arrangement of our improved
silencing apparatus and appliances, in which the controlling valve is shewn lifted so
as to leave the passage between the chambers open.
Fig. 2, is a similar view shewing the controlling valve lowered and the passage
between the chambers closed.
Fig. 3, is a plan of the same.
Fig. 4, is an outline of a motor (on a reduced scale) shewing the manner in
which the controlling valve is actuated by the eccentric on the crank shaft of the
engine.
The same letters refer to similar parts throughout the several views.
a, and b, are the chambers into which the exhaust from the motor cylinder has to
pass before it is discharged into the atmosphere.
c, is the passage between the same.
d, is the controlling valve.
e, is the spring on the same.
f, is the exhaust pipe or passage for receiving the gases as they are exhausted
from the motor cylinder.
9, is the exhaust pipe or passage through which the exhaust gases are admitted
into the atmosphere. (These passages are sometimes placed on the top of the
chambers a and b, as shewn in Fig. 4.)
h, is the eccentric on the motor crank shaft for actuating the controlling valve, d.
, is the crank shaft and
j,. is the cylinder of the motor.
Note. We do not confine ourselves to the particular arrangement herein illus-
trated which may be varied according to circumstances, for example instead of the
chambers
and b, being side by side they may be placed in line one above the other
a,
and so forth.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In gas and oil and other hydro-carbon motors the combination of parts and
appliances by means of which the noise caused by the exhausted gases
as they

page_text: escape from the cylinder or cylinders of such motors into the atmosphere is lessened,
deadened or silenced, comprising a controlling valve, d, fitted with a spring, e,
worked by the engine or other means so as to open and close the communication
between the cylinder or cylinders and the atmosphere, or between one or more
chambers or series of chambers and the atmosphere, or between two or more
chambers or series of chambers at intervals corresponding with the strokes of the
engine, in the manner and for the purposes substantially as herein described and
illustrated.
Dated this 8th day of December 1902
R. HEBER RADFORD,
Agent for the Applicants.