Year: 1888

page_text: A communication from JULES LARRIVEE and AUGUSTE AENGENHEYSTER, both of
12, Rue de Strasbourg, Paris, in the Republic of France, Manufacturers..
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E. do hereby declare the nature of this invention to be as follows:
-
The present invention relates to an improved gas motor consisting essentially of three
principal parts i.e. an outer cylinder, an inner cylinder and a wing or fan.
The working of the motor depends on two cranks one of which describes an
entire revolution with the fly wheel while the other never goes over the horizontal
line.
This motion produces or controls the oscillating movement of the wing and limits
its movement to within one half of the circumference of the cylinder.
On a suitable frame is fixed a half cylinder with double walls leaving between them
a chamber for the circulation of cold water for the purpose of cooling the parts of the
motor. In the interior of this half cylinder is mounted on a shaft a second cylinder
to the surface of which is fixed a wing or fan fitting exactly in the interior of the outer
cylinder and moving with the inner one. This wing or fan so to say replaces the
piston used in other motors. In the base of the outer or half cylinder is formed an
opening for the entrance of atmospheric air for the cooling of the inner cylinder.
To the shaft of the inner cylinder is fixed a crank upon the pin of which works one
end of a connecting rod the other end of which works upon the pin of a crank
fixed to the shaft of the fly-wheel.
By means of these two connected cranks the oscillating movement of the inner
cylinder with the wing fixed thereto is imparted or controlled.
The introduction of the gas is regulated by means of bevil gearing in a chamber
or box mounted on one side of the outer cylinder. This box is formed with preferably
seven holes, the central one of which communicates with the gas supply pipe, while
the surrounding six are for the introduction of the necessary atmospheric air drawn
in by the movement of the wing of the inner cylinder.

page_text: On one of the sides of the said box or chamber is mounted a valve of sufficient size
for the escape of the products of combustion. This valve is operated by means of an
eccentric roller fastened to a shaft which is operated by a horizontal shaft provided at
each end with a bevil pinion one of which gears with a bevil pinion mounted on the
shaft of the fly-wheel, while the other gears with a bevil pinion mounted on the shaft
or rod operating the valve.
When by the suction of the wing piston a sufficient quantity of gas and air is
introduced in the outer cylinder the valve of the gas chamber is closed and the piston
wing compresses the explosive mixture in its return stroke. When the mixture is
sufficiently compressed, it is fired by an electric spark and drives the wing sharply
back, the valve for the escape of the products of combustion opens and the wing piston
sucks in a fresh quantity of explosive mixture.
Dated this 17th day of September 1888.

page_text: A communication from JULES LARRIVEE and AUGUSTE AENGENHEYSTER, both of
12, Rue de Strasbourg, Paris, in the Republic of France, Manufacturers.
I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., 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 :—
The present invention relates to improvements in gas motors and has for its object
to provide a motor which will be characterised by its simplicity and consequent
inexpensiveness of construction and also its economic production of power.
In the accompanying drawings figs. 1 and 2 are elevations of the opposite sides of a
motor constructed according to this invention and of which fig. 3 is a plan; fig. 4 is
an elevation of the gas and air admission valve or disc shown in its casing and fig. 5
an elevation looking from the opposite direction of the valve or disc thereof removed
from its casing fig. 5" is a view corresponding to fig. 5 of another form of valve or
dise and figs. 6 and 7 are horizontal sections showing the valve respectively in its open
and closed positions; fig. 8 is an inner face view of the exhaust valve and casing and
of which figs. 9 and 10 are vertical sections showing it respectively in its open and
closed positions. Fig. 11 is a longitudinal vertical section through the half-cylinder
and adjacent parts; figs. 12 and 13 are details of portion of the valve operating
mechanism. Figs. 4 to 10 and fig. 12 are drawn to a larger scale than figs. 1, 2, 3
and 11.
Like letters indicate like parts throughout the drawings.
With reference to figs. 1, 2 and 3 A is the framing on which is supported the half
cylinder B hereinafter termed the 'cylinder' and on which framing are also provided
the bearings A¹ for the driving shaft C. The curved wall of the cylinder B is formed
with a. chamber B¹ represented in dotted lines in figs. 1 and 2 and more clearly in
fig. 11 so as to allow for the circulation of water through it for keeping it from
becoming excessively hot, B2 and B³ being the parts at which the water enters and
leaves the chamber. E is the wing or piston firmly secured on the cylinder or hollow
shaft E¹ which is mounted rigidly on the shaft E2 and the outer end of which wing
is curved to correspond with the inner surface of the cylinder B against which it
works and by means of suitable packing pieces makes a gas-tight joint. The hollow
shaft E is provided for the purpose of filling up the central portion near the axis
where but little leverage would be obtainable. The cylinder B is closed in at its lower
part by the plate B in which is provided the opening B to allow of the passage of air
through it to or from the back of the wing; this end of the cylinder can if desired
be left entirely open. The ends of the shaft E2 pass out from the cylinder B through
suitable stuffing boxes E3 and on one of the projecting ends of the said shaft is secured
the crank E which by means of the connecting rod F is coupled to the crank C¹ of
the driving shaft C the relative lengths of these two cranks being such that while the

page_text: crank C¹ makes a complete revolution the crank E oscillates to the extent only of not
quite half a revolution.
The gas and air admission valve which is shown more clearly in figs. 4 to 7 consists
of a disc G carried on the rocking shaft G₁ which is adapted to be partially rotated by
means of the arm G' secured on its end. The outer face of the disc G that is to
say the face represented in fig. 5 is formed with the groove G³ which forms nearly
but not quite a complete circle the block G between the ends of the said groove G
serving to cut off the supply of gas as hereinafter explained. The disc G is also
provided with the perforations G from the outer ends of which tributary grooves Ge
in the face of the disc communicate with the groove G³. The casing H in which the
dise G is adapted to operate is provided with an aperture H¹ through which gas is
supplied by a pipe H and which is so located that its inner end opens into the
groove G³ as shown in fig. 6 when the valve is open or against which is presented
the block G as shown in fig. 7 when the valve is closed. The casing H is also
provided with holes H³ which correspond in number and position with the holes Go
these being so disposed that when the valve is open they register with the holes Go as
shown in fig. 6 and when the valve is closed the face of the metal intervening
between the holes G³ is opposed to the inner ends of the holes H³ as shown in fig. 7.
When air is drawn into the cylinder B through the holes H³ and G gas at the same
time is drawn through the aperture H₁ into the groove G³ and thence along the
grooves Go into the holes G wherein it becomes mixed with the air and thus forms an
explosive mixture before it enters the cylinder.
The exhaust valve as shown most clearly in figs. 8, 9, and 10 consists of a disc 1
carried on a rocking spindle I' and provided with apertures I², the case J into which
the disc I fits being provided with corresponding openings J the valve thus
constituted operating after the well-known manner of a hit-and-miss ventilator the
products of combustion passing out through the openings J¹ escaping into the atmo
sphere through the pipe J².
The operating discs of the admission and exhaust valves are held against their seats
by the internal pressure in the cylinder B. The spindle I has secured to it an
arm G2 which like the corresponding arm G2 of the admission valve as shown in
figs. 1, 2 and 3 is coupled to a rod K the lower end of which is forked so that it may
be guided in its up and down movement by the shaft D upon which the fork moves
and which shaft is supported transversely beneath the cylinder B in or upon the
framing A. This shaft carries on its ends the cams L which are adapted to raise and
lower the rods K through the anti-friction rollers K' pivotted on the said rods these
rollers being drawn down on to the cams L preferably by means of the springs M.
To the shaft D rotary motion is transmitted from the driving shaft C by means of
gearing Cand shaft N shown most clearly in fig. 3 the said gearing being so
arranged that for every two revolutions of the driving shaft C the valve-operating
shaft D will make one revolution. The cams L are so arranged on the shaft D as
to operate the admission and exhaust valves alternately or as required.
In fig. 11 an electric igniting device is indicated at Q.
The operation of the motor is as follows:-
The initial start is given in the ordinary way and the gas cock O fig. 3 is turned
on and the gas during every two full or four half revolutions of the fly wheel P and
shaft C is acted upon or caused to act in the following manner. During the first
half revolution of the shaft C the wing E in moving away from the then-open
admission valve (the exhaust valve being at this time closed) draws in a mixture of
air and gas through the holes G. During the second half revolution the admission
and exhaust valves are both closed and the return stroke of the wing E causes the gas
to be compressed and at the end of this stroke the electric or other spark ignites
the gas and propels the wing E through the third half revolution of the shaft C,
both the valves being still closed. During the fourth half revolution the exhaust valve
is open and the wing E in its return stroke forces the products of combustion out
through the said exhaust valve. At the next half revolution of the shaft C this cycle
of operations recommences.

page_text: The positions of the groove and various apertures in the admission and exhaust
valve casings or discs inay be varied to suit requirements, the groove G³ in the
admission valve for instance being if desired inside the holes G5 as shown in fig. 7a
the casing H in this construction being provided with apertures to suit the altered
position of the gas and air passages in the disc G.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is :-
1. In a gas motor the combination with a cylinder such as B of a wing or piston
adapted to oscillate within it substantially as herein described.
2. In a gas motor the combination with an oscillating wing such as E of an
oscillating crank of greater length than the driving-shaft crank to which it is
connected and imparts rotary motion substantially as and for the purpose herein
described and illustrated in the accompanying drawings.
3. In a gas motor and air and gas admission valve consisting essentially of a
perforated and grooved disc such as G and a perforated casing such as H within which
the disc is adapted to be operated substantially as herein described and illustrated in
the accompanying drawings.
4. In a gas motor and as a means of operating the valve the combination with the
valve shaft arm of a forked rod such as K adapted to embrace the shaft which
operates it substantially as described and illustrated in the accompanying drawings.
5. The complete gas motor substantially as herein described and illustrated in the
accompanying drawings.