Improvements in Internal Combustion Motors.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Internal Combustion Motors.
I, ELIE VICTOR BUCHET, of 170, Avenue Danmesnil, Paris, in the Republic ot
France, Engineer, do hereby declare the nature of this invention to be as
follows:-
-
In internal combustion motors as ordinarily constructed the valve casings for
admission and exhaust are usual so arranged as to leave considerable waste space
This is one of the
between the valve and the cylindrical explosion chamber.
causes of low capacity of working inasmuch as the motive fluid contained in
this space does not contribute towards the propulsion of the piston and not only
does its energy remain unutilized but it exercises a very prejudicial action by
the fact that it is transformed into heat passed into the walls of the cylinder and
that on this account these walls require energetic and constant cooling.
According to this invention the waste spaces are obviated by the peculiar
arrangement of the admission and exhaust valves, thereby economizing con-
siderably in motive fluid as well as in the dimensions and weight of the cylinders
and saving in the heating thereof.
In order to attain the desired object I mount the valves in the walls of the
explosion chamber in such a manner as to cause them to flush with the internal
surface thereof.
The invention will be more readily understood by reference to the accompany-
ing drawings, in which
Figure 1 is an elevation of the general arrangement,
Figure 2 is a plan of Figure 1, and
Figure 3 is a vertical section through the two valves.
a represents the end-cover of the cylinder which forms the compression and
explosion chamber of the motor. The cylindrical surface of this chamber is
provided with a screw threaded orifice 6 into which the igniting device is fixed.
The end cover a of the cylinder has cast in one with the exhaust outlet c in
which is disposed the exhaust valve e which when pressed upon its seat is flush
with the internal end surface of the cylinder. Near this valve, in a socket
piece f, the admission valve d is fitted and this valve also when closed is flush
with the internal end surface of the cylinder.
Upon the socket f is secured the admission pipe g.
In the same cylinder-cover is furthermore fixed the blow-through pipe h.
The admission and exhaust valves may be operated in any convenient manner.
In the drawings the admission valve is represented as a single spring valve
without mechanical operating means. The exhaust valve, on the contrary, is
operated mechanically and is closed by means of a spring mounted upon the
valve rod and disposed between a collar 7 upon the rod and the extremity of
the stuffing box or guide tube j: the said tube being fixed in the cylinder cover,
the rod k fitting therein with friction.
The mechanism for operating the valve comprises a double-armed lever m
which acts by its free end upon the valve rod k. This lever is pivotted in a

page_text: bracket n fixed upon the cylinder cover and is actuated by a rod o jointed to the
lever and operated by any appropriate means.
The end a of the cylinder, the exhaust socket e the guide tube ; and the
blow-through pipe h are furnished with external cooling ribs or radiators.
Although prefer the herein before described arrangement I desire it to be
understood that I do not limit myself strictly to this.
Thus for instance the admission and exhaust valves instead of being flush
with the internal surface of the extreme end of the cylinder they may be
arranged so as to be flush with the cylindrical surface.
In all cases, from the fact that the admission and exhaust valves are so dis-
posed as to be flush with the internal surface of the cylinder, the result after
admission is that the whole of the explosive mixture is confined in the cylindrical
compression chamber directly behind the piston. As a consequence when ignition
takes place the whole gaseous mixture co-operates in driving the piston outward;
the entire caloric energy is transformed into mechanical work and heating is
avoided while at the same time the working capacity of the motor is increased
thereby.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
Improvements in Internal Combustion Motors.
I, ELIE VICTOR BUCHET, of 170, Avenue Danmesnil, Paris, in the Republic of
France, Engineer, 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 internal combustion motors as ordinarily constructed the valve casings for
admission and exhaust are usual so arranged as to leave considerable waste space
between the valve and the cylindrical explosion chamber. This is one of the
causes of low capacity of working inasmuch as the motive fluid contained in
this space does not contribute towards the propulsion of the piston and not only
does its energy remain unutilized but it exercises a very prejudicial action by
the fact that it is transformed into heat passed into the walls of the cylinder and
that on this account these walls require energetic and constant cooling.
According to this invention the waste spaces are obviated by the peculiar
arrangement of the admission and exhaust valves, thereby economizing con-
siderably in motive fluid as well as in the dimensions and weight of the cylinders
and saving in the heating thereof.
In order to attain the desired object I mount the valves in the walls of the
explosion chamber in such a manner as to cause them to flush with the internal
surface thereof.
The invention will be more readily understood by reference to the drawings
accompanying my Provisional Specification, in which
Figure 1 is an elevation of the general arrangement,
Figure 2 is a plan of Figure 1, and
Figure 3 is a vertical section through the two valves.
a represents the end-cover of the cylinder which forms the compression and
explosion chamber of the motor. The cylindrical surface of this chamber is
provided with a screw threaded orifice into which the igniting device is fixed.
The end cover a of the cylinder has cast in one with the exhaust outlet c in

page_text: which is disposed the exhaust valve e which when pressed upon its seat is flush
ith the internal end surface of the cylinder. Near this valve, in a socket
piece f, the admission valve d is fitted and this valve also when closed is flush
with the internal end surface of the cylinder.
Upon the socket f is secured the admission pipe g.
In the same cylinder-cover is furthermore fixed the blow-through pipe h.
The admission and exhaust valves may be operated in any convenient manner.
In the drawings the admission valve is represented as a single spring valve
without mechanical operating means. The exhaust valve, on the contrary, is
operated mechanically and is closed by means of a spring mounted upon the
valve rod and disposed between a collar 7 upon the rod and the extremity of
the stuffing box or guide tube j; the said tube being fixed in the cylinder cover,
the rod fitting therein with friction.
The mechanism for operating the valve comprises a double-armed lever m
which acts by its free end upon the valve rod k. This lever is pivotted in a
bracket n fixed upon the cylinder cover and is actuated by a rod o jointed to the
lever and operated by any appropriate means.
The end a of the cylinder, the exhaust socket the guide tube j and the
blow-through pipe h are furnished with external cooling ribs or radiators.
Although I prefer the herein before described arrangement I desire it to be
understood that I do not limit myself strictly to this.
Thus for instance the admission and exhaust valves instead of being flush
with the internal surface of the extreme end of the cylinder they may be
arranged so as to be flush with the cylindrical surface.
In all cases, from the fact that the admission and exhaust valves are so dis-
posed as to be flush with the internal surface of the cylinder, the result after
admission is that the whole of the explosive mixture is confined in the cylindrical
compression chamber directly behind the piston. As a consequence when ignition
takes place the whole gaseous mixture co-operates in driving the piston outward;
the entire caloric energy is transformed into mechanical work and heating is
avoided while at the same time the working capacity of the motor is increased
thereby.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
In internal combustion motors the arrangement of admission and exhaust
valves disposed in the wall of the explosion chamber, in such a manner that said
valves are flush with the internal surface of the said wall substantially as herein-
before described and illustrated by the drawings and for the purpose specified.
Dated this 23rd day of April 1900.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.