An Improved Rotary Motor, applicable also for use as a Pump, Ventilator, or the like.
Year: 1892

page_text: Date of Application, 13th May, 1892-Accepted, 18th June, 1892
An Improved Rotary Motor, applicable also for use as a Pump,
Ventilator, or the like.
I, RENÉ GUILLERY of 22, Rue de Strasbourg, Creusot 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:—
The improved kind of motor forming the object of this invention is based on the
transformation of two different circular motions into one continuous circular one by
means of a combination of cranks and flexible levers.
In order that the invention may be the more easily understood, reference will be
made to the accompanying sheet of drawings.
Referring to Figure 1 :-
Imagine a pentagon a b c d e, the sides of which are suitably arranged so that the
part ab may revolve round a fixed point o, and the points cd may revolve round
the point e, at the same time remaining equidistant from the points a and b. If a b
be caused to revolve round the point o in the direction of the arrow, the points o
and d will be further removed one from the other, and the pentagon will assume the
form indicated by a b c d e³.
Then, when a b has made half a revolution, the pentagon will become a¹ b¹¹ d'e
with a reflex angle of such a kind that the point c has described the minor
are cn c', and the point d the major are dm d'. The angular separation of the
sides e cand e d will be measured by the major arc d m d¹ and minor arc cnc.
The position of the pentagon corresponds actually to the position shown in a bed e
of Figure 2.
If the side a b then continues its motion round o, when it has described its second
half revolution, the pentagon will resume its former position at a' b c d e in
Figure 2, c will have come to c, d to d¹, so that the angular separation of the
sides e c and ed will be measured by the major arc c m² c¹ and the minor arc d n'd¹
identically equal to that of the former half revolution.
In practically applying the foregoing principles, suppose that cranks be
formed of e cand e d corresponding to pistons or wings situated in a closed
cylinder, then from a b a double headed crank is made, revolving round o,
and finally, by causing a b to revolve round o, from a c and b d two equal
connecting rods will be obtained, relative distances apart from the two pistons or
wings. By causing a liquid under pressure, such as steam, air, inflammable gas,
water, or any other liquid, to penetrate into these spaces, a steam-, compressed air-,
gas-, hydrocarburetted vapour-, hydraulic- or other motor will be formed.
Similarly, by introducing into these recesses a liquid or a gas not under pressure, a
pump or ventilator, may be obtained. Suppose a and b coincide, then the pentagon
will become a quadrilateral; the motion remaining the same but the obliquity of
the figure increasing. One of the levers e c and ed may be caused to revolve with
a uniform motion, the result of which will be variable movements for the other and
for the crank o ab, and the relative distances of the pistons or floats will still
remain.
In the accompanying drawing, I have shown the arrangement above described
applied to a rotary motor actuated by steam, but which might be actuated by any
other liquid under pressure.
Figure 4 is a section of the motor on the line 1-2 of Figure 6.
Figure 5 is a plan of the cylinder, partly in section.
Figure 6 is a section along the dotted line 7-8 of Figure 4.

page_text: Figure 8 is a partial section on the line ɔ and 6 of Figure 4.
Figure 9 is a view in profile of the motor.
Figure 10 is a plan of the bed plate.
In the various figures, the same letters refer to similar parts.
A is the cylinder of the motor, provided with a cover B.
C and Clare two pistons, the form of which is shown in Figures 4 and 6.
D and D' are the piston cranks.
E and E' are the connecting rods.
F is the crank which transmits the motion to the driving shaft G.
His the pedestal in which the driving shaft revolves.
I is the escape.
Jis the bearing supporting the shaft connected with the pistons.
K is the bed plate.
L is the driving wheel, also serving as a fly wheel.
M is the inlet pipe.
The position of the pistons shown in Figure 4 shows the machine at one of
its dead points.
Assuming that the inlet M and escape I are open for running in the direction of
the arrow N, and that then the dead point is passed and the pentagon is at a bede,
Figure 3 taking into consideration the parallelogram of forces, it will be seen that
forces P P acting at c and d have for their resultant R acting at the double
headed crank o ab in connection with the lever arm o m. The rotation arises,
therefore, from the difference of the momentums f¹kfk, which varies somewhat
suddenly towards the dead points, but which is inconsiderable at the other points.
The result of this is that the action is sufficiently continuous to allow of the weight
of the fly wheel being diminished. It may consequently be made very light.
When the pressure acts effectively on one of the pistons, the other, by virtue of its
slow motion, closes at a suitable moment the inlet pipe which results in expansion;
when the travelling piston closes the escape, compression is produced; after which
it falls to the dead point and the motion recommences.
Finally, if M. and I be closed and M¹¹ be opened, the movement is reversed in
the direction of the arrow R.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. An improved rotary motor applicable also for use as a pump, ventilator, or the
like, consisting of a cylinder A, two pistons C C', the axes of which are connected
to a main shaft (G) by cranks such as D D', connecting rods (E E') and crank (F),
the whole arranged and working in the manner and for the object hereinbefore
described.
2. In a rotary motor, such as described in Claim 1, the combination of the
cylinder (A), of the two pistons (CC), of the cranks (D D¹), of the connecting
rods (E E¹), of the crank (F), and the driving shaft (G) with the inlet
orifices M M' and the escapes I I'; whereby the machine can work with or without
expansion gear, and the direction of rotation may also be changed at will, sub-
stantially as hereinbefore described.
3. The general arrangement and construction of parts forming the improved
rotary motor applicable also for use as a pump, ventilator, or the like, substantially
as hereinbefore described and shown.
Dated this 12th day of May 1892.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.