Improvements in Gas or Petroleum Motors.
Year: 1895

page_text: Date of Application, 5th July, 1895
Complete Specification Left, 7th Apr., 1896-Accepted, 9th May, 1896
Improvements in Gas or Petroleum Motors.
We, ARMAND LE COMPAGNON, Engineer, and JEAN GUIBERT, Engineer, both
of 20 Rue du Cloître, Notre Dame, Paris, in the Republic of France do hereby
declare the nature of this invention to be as follows:-
Our invention relates to motors operated by the explosion of a combustible
vapour or gas which requires compression before ignition, and consists of a special
construction and arrangement of parts in motors for that purpose.
Our motor is essentially characterized by the employment of two cylinders,
superposed one above the other, in each of which work two pistons, having piston
rods and connections arranged outside at either end of the said open cylinders.
that
The connection between each pair of the four pistons is by pivotted cross heads,
and return connecting rods, to two cranks or crank discs carrying cog wheels gearing
into a central fly wheel shaft, and the crank disc shafts are so connected
up,
two pistons approach one another in one cylinder, thus producing compression or
exhaust, whilst the pair of pistons in the other cylinder move away from one
another, under an explosive force, or effecting suction of a fresh charge of
combustible gas.
The entire system is in equilibrium, and vibrations are avoided.
We may use any convenient arrangement of inlet, exhaust, and control valves,
without departing from the nature and essence of our invention as above
described.
Thin 5th day of Jul 1895
FELL & WILDING,
Agents for the Applicants.
Improvements in Gas or Petroleum motors.
We, ARMAND LE COMPAGNON, Engineer, and JEAN GUIBERT, Engineer, both
of 20 Rue du Cloître Notre Dame, Paris, in the Republic of France, 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:―
Our invention relates to motors operated by the explosion of a combustible
vapour or gas which requires compression before ignition, and consists of a special
construction and arrangement of parts in motors for that purpose, which may be
varied in detail, but of which the essential characteristics are the employment of
two cylinders, superposed one above the other, in each of which work two pistons,
having piston rods and connections arranged outside at either end of the said open
cylinders, such arrangements serving to suppress the vibrations in the motors and
thus to avoid heavy masonry and foundations.

page_text: And in order that our invention may be the better understood, we now proceed
to describe the same with reference to the drawings hereto annexed and to the
letters and figures marked thereon.
Like letters refer to similar parts of the various figures.
Figure 1 shows a side elevation of our motor with part section through valve
box, the metal frame being shown in dotted lines.
Figure 2 is an end view of the same, part being in cross section and the end
rocking-balance-levers being removed.
The valves and apparatus for the distribution of the gas and for regulation
thereof, are indicated only in a general manner, as their disposition is identical to
those of known motors and may be varied according to requirements.
The arrangement of the parts as shown would serve to produce rotation of the
motor in the direction of the arrow Z, Figure 1.
Our motor consists essentially of two cylinders A and B superposed above one
another. In each of the cylinders there are two trunk pistons CD and C¹D'
respectively, separating from and approaching to one another in the axes X Y of
the motor.
The cylinders are furnished with valve boxes E E' in which are the usual ports
of admission and exhaust for the gas, with corresponding valve or valves therein.
The connecting rods F F F F of the pistons are pivotably connected to the
balance levers H H which oscillate round the pivots II and to which are
attached pins JJ1 carrying the usual brass bearings K K' of return connecting
rods L L, which operate at their other ends M M, the crank N of the shaft O,
carrying a fly wheel P.
A pinion R is keyed on the said shaft O and engages with a cog-wheel S upon
a countershaft T which operates by cams U U' the valves of exhaust by suitable
rocking levers and controlled by a governor V.
Our motor is of such type that at every reciprocation of each piston a cycle is
produced in four steps, viz. 1st suction, 2nd compression, 3rd explosion, 4th exhaust,
but the cycles in the two cylinders A and B are successive in order respectively so
that in the second cylinder the steps in the same time as above cycle are 1st exhaust,
2nd suction, 3rd compression, 4th explosion.
In known gas motors with the above cycle there is only one explosion stroke
in two revolutions of the main crank, but in our motor there is an explosion stroke
in each revolution of the crank shaft.
By the arrangement of opposing double pistons in each cylinder the shock of
explosion is equilibriated between the pistons and does not come upon the
cylinders or bed frames. The consequence is a suppression of vibration, and
foundations are not required.
As before stated the appliances for the distribution of the gas may be of any
convenient character without departure from the essence of our invention.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1st. In an explosion motor the combination of two cylinders, arranged
horizontally above one another and each furnished with two independent
pistons.
2nd. In an explosion motor the combination in each of two superposed cylinders,
two trunk pistons receding from, or moving towards one another, connected in
pairs of one in each cylinder, by a rocking lever and connecting rods, the rocking
levers operating by return rods a central crank geared to a counter shaft operating
the valve gear.
3rd. In an explosion motor the combination in two cylinders, each provided with
two pistons, of similar but transposed cycles of operations, so as to afford an explosive
effect upon the crank shaft for each revolution of the same.

page_text: 4th. The construction and arrangement of parts of an explosion motor, sub-
stantially as described and illustrated in the drawings annexed hereto.
Deted the 4th day of April 1896.
FELL & WILDING,
Agents for the Applicants.