An Improved Rotary Motor, more particularly for Autocars.
Year: 1898

page_text: COMPLETE SPECIFICATION.
An Improved Rotary Motor, more particularly for Autocars.
I, MAURICE REISACHER, of 44, Avenue du Prado, Marseilles, 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:-
This invention has for its object an improved form of construction of a rotary
motor more particularly for autocars and capable of producing great power in a
small space.
The said motor is shown in the accompanying drawings, in which,
Figure I is an elevation showing a vertical section of the carburettor, one of
the cylinders, the fly-wheel and the escapement box;
Figure II is a plan view showing the position of the four cylinders and four
suction valves; a portion of the motor being broken away to show one cylinder
and one valve in horizontal section.
Figure III is a section of a cylinder, a suction valve, and an escapement valve.
Figures IV, V VI and VII show the various positions of the cylinders at each
quarter revolution.
The motor is composed of four cylinders A A A A ranged horizontally or
vertically without a dead point and revolving with a plate M forming the frame,
the flywheel and pulley. In the drawings these four cylinders are arranged
horizontally. The cylinders have no water circulation and are cooled by
wings projecting in the direction of rotation. Four pistons B B1 B2 B3
provided with bent connecting rods C C1 C2 C3 and pivoted two by two to
trunnions t¹ forming part of the shaft and of the cranks D which are fixed and
mounted on the frame. Five reducing gearings of which only three U2 U³ U* are
shown, said gearings supporting four insulated cams for distribution lighting and
escapement, of which two V VI only are shown, and a small current breaker W
which may be dispensed with if necessary according as the lighting is effected
by contact or by magnet. Where all the parts of a series of similar parts are
not shown in the drawings, it will be understood that they are arranged sym-
metrically, and the positions can be readily understood from the parts shown. A
current breaker is of course provided for each cylinder and it is arranged in
parallel on a common gearing. It also has a commutator N. Four suction
valves FF1 F2 F3 drawing from a gas reservoir Q, four escapement valves of which
only two T T are shown, and actuated by the aforesaid four cams V, four stops
of which only one n is shown, and the ends of which stops which have the form of
a plate, at each passage of one of the cams V, strike each against a rod of one of
the valves T and close the latter, whilst a spiral spring returns the valve to its
normal position after each contact. Four electric igniters I, I¹ 12 1³, four
sleeves R R R2 R³ arranged on the suction valves containing wire netting or
metallic cloth, which prevent the cylinders sucking up foreign matters which
might clog the valves or injure their good working. Four aspiration or suction
tubes E E E E³ drawing from the reservoir Q, an arched cross bar 7, Figures 1
and 2 spanning the four cylinders and forming a pedestal, a carburettor P com-
posed of a cork disc X forming a float and four air inlets of which only
three SS1 S2 are shown; this carburettor shares in the rotary movement of the
whole motor; a suction tube f mounted in the shaft and connecting the carburettor

page_text: with the reservoir Q, a spirit tape also arranged in the shaft, and having an
automatic pointer a, a gas regulating tap o acting on the tube f and the air
opening, H, thus allowing more gas and less air or vice versa to be admittedl
according to circumstances; a gas admission tap o capable of thus admitting
carburetted gas into the cylinders and by this fact the speed of the motor to be
slackened; a reservoir Q placed between the suction tubes E E E E³ which share
in the rotary movement of the motor, and the tube-f which is fixed to the shaft,
and the regulating taps and a coil d receiving a portion of the escapement by the
waste gas arrival tube c and serving-for heating spirit or petroleum for facilitating
the evaporation.
The motor also comprises a circular escapement box G filled with iron filings
and following the movement of the motor, four lubricators of which only
three L L L are shown, a starting gear y, an oscillating coupler J for connecting
two or four cylinders, two slide supports for the coupling of which one m is
shown, and themselves acting on two reducing gears U U opposite one another.
When these slides are set up by the pressure exerted on the coupler J, the cams V
act on the escapement valves T. Vice versa when the pressure on the coupler is
removed the slides m are lowered and the cams V no longer come opposite the
catches n, the rollers of which then travel continuously on a ring of larger diameter
than the cams themselves, and consequently constantly bear on the escapement
valves T which are then always open. As the suction no longer takes place by the
valves F of the gas but only to the open air owing to the opening of the escapement
valves detonations are suppressed and only two cylinders are in action, four
Rheophore insulators of which two h³, are shown, four igniting devices of
which two b¹ 63, are shown, two current terminals g and gl and a frame in three
parts K.
By its arrangement this rotary motor for autocars is of remarkable lightness and
requires only a very small space seeing that a motor of about 20 h.p. may be
mounted in the box of any carriage.
As hereinbefore stated the four cylinders A A A A are arranged horizontally
but of course they may be placed vertically, without dead point and revolving
with the plate M forming the frame, flywheel and pulley. Said cylinders have no
water circulation but are cooled by means of wings
cast on them and
radiating all round the said cylinders. The great agitation of air produced by the
rotary movements of these latter round the shaft serves to cool the cylinders.
All the parts of the rotary motor are extremely simple and are easily dismounted.
The cylinders A A A A which are of four stroke cycle and are placed at 90°
and coupled two by two, for instance A and A' on the trunnion and A2 A3 on
the trunnion ¹ (Figures 4, 5, 6 and 7) all draw in turn and by means of their
valves F F F 1 from the same carburettor P and compress, explode and expel
the burnt gases successively and in their turn.
Thus, for the first revolution of the rotary motor, Figure IV represents the
cylinder A in the suction period, A' in the escapement period, A² at the explosion
period, and A³ the compression period.
Figure V represents the cylinder A at the suction, A¹ at the suction, A² at
the explosion and A³ the explosion.
Figure VI represents the cylinder, A at the compression, A¹ the suction, A2 the
escapement A3 the escapement.
Figure VII represents the cylinder A at the compression, A¹ the compression,
A³ the escapement, and A3 the escapement.
For the second revolution of the rotary motor, Figure 4 represents the cylinder A
at the explosion, A¹ at the compression, A2 at the suction and A3 at the escape-
ment.
Figure V represents the cylinder A at the explosion, A¹ at the explosion, A² at
the suction and A at the suction.
Figure VI represents the cylinder, A at the escapement, A¹ at the explosion,
As at the compression and A3 at the suction.

page_text: Figure VII represents the cylinder A at the escapement, A' at the escapement,
A at the compression and A at the compression. It is evident that in the two
revolutions necessitated by the four strokes of the motor, there are produced four
successive explosions, two for each revolution.
The movement of propulsion is made by the cylinders instead of by the pistons,
the former moving in the direction of rotation and the trunnions, and shaft
remaining fixed as may be seen in Figures 4, 5, 6 and 7.
The automatic carburettor P formed in one with the cylinders follows the same
rotary movement. It produces a homogeneous carburetted air of constant com-
position which allows a perfect invariable carburetting to take place. It enables
moreover petroleum and heavy oils to be utilised.
A portion of the escapement passes at will into a coil d arranged for this purpose
at the bottom of the carburettor P. This carburettor may be insulated and fixed,
that is to say independent.
The escapement valves T, being placed round the motor follow the same rotary
movement, thus almost annihilating the noise of the escapement.
The inlet for drawing in the air for the mixture is placed at H and the
carburetting is regulated by a fixed tap O placed above the motor. The tap O'
for admitting the carburetted air is also fixed and placed beside the tap for regu-
lating the carburetting. All the cylinders draw from the same carburettor.
When at work and according to the power to be developed, one, two, three or
four cylinders may be very easily employed at will by means of the oscillating
coupler J acting on the cams V of the escapement and igniting devices preventing
the drawing in of the gas. The cylinders not in use work with open air.
The lighting of the explosive mixture is electrical and may be effected by means
of an induction coil or magneto-electro machine with or without the devices b¹ 63.
The lubrication takes place automatically by means of the cups L and with a
single oil reservoir.
The starting is very easy, seeing that the impulse of a half turn is sufficient.
In the drawings accompanying the present specification, only one type of
rotary motors for autocars has been shown being the most perfect hitherto of
this improved kind, but of course the dimensions may be increased or diminished
and the form and the arrangement may be varied without departing from the
principle.
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:-
1. In a rotary motor more particularly for autocars, four rotary cylinders form-
ing a continuation of the frame, flywheel and pulley and cooled without circulation
of water by means of wings or leaves radiating around said cylinders, substantially
as described.
2. In a rotary motor more particularly intended for autocars, an automatic
carburettor (P) forming one with the said cylinders and following the same rotary
movements, substantially as described.
3. The general construction and combination of parts taken as a whole forming
the improved, rotary motor more particularly for autocars and adapted to produce
the maximum of power and only requiring a minimum of space and weight, sub-
stantially as hereinbefore described and illustrated.
Dated this 29th day of November 1898.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool. Agents for the Applicant.