Improvements in Rotary Engines for Continuous Current, applicable either as a Motor or as a Pump for Gas, Vapour, or Liquids.
Year: 1899

page_text: Improvements in Rotary Engines for Continuous Current, applicable
either as a Motor or as a Pump for Gas, Vapour, or Liquids.
I, Louis Jules JEAN BAPTISTE LE ROND, of 106, Rue de Miromesnil, Paris,
in the Republic of France, Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
-
In the Specification of prior applications No. 109689 and 1125898 I have
described a rotary engine with continuous current and which is a modification
of another previously patented rotary engine.
This invention relates to improvements in connection with my engine
whereby the same is capable of working with or without distributing mechanism.
I reserve to myself the right of utilizing the rotary engine with or without
distributing mechanism for the most varied purposes, be it as a motor without,
or with simple, or multiple expansion, or as, a suction pump, a force pump, or as
an air pump or for compressing purposes. I also reserve to myself the exclu-
sive right of grouping together in a single casing, by providing the rotary
cylinder with suitable channels or grooves, any combination of pumps and
motors together with or without distributing mechanism.
The Figure
of the annexed drawing shows an arrangement of gas and oil
motors working without either slide or other valve, and in which the groove or
chamber 1 sucks in the air or the mixture of air and gas, or steam, compressed
in the second groove or chamber 2 in which. the explosion or combustion takes
place, the expansion taking place in a third groove or chamber 3. It will be
evident that in front of the first chamber another or fourth chamber ( may be
arranged to act as a pump which thus will be direct acting. In the drawing I
have shown neither pistons nor their male tores nor the corresponding recesses
in the cylindrical casing..

page_text: It will be seen from Figure 6 which is a diagram of the arrangement showing
the tore 2 in section that the angle (a) can never be placed into communication
with the part wherein combustion or explosion takes place. In the same way
the angle (y) can never be in communication with the tore 1. By this arrange-
ment I am enabled, even during working, to charge an independent reservoir R
with compressed fluid taken from the angle (r), and having thus or by any other
means compressed the fluid in an independent reservoir, I can set the machine
working by admitting the compressed fluid into the angle (y) without special
regard to any manner of carburation and ignition (explosion or combustion). I
reserve to myself the employment of these various arrangements for starting
as represented in the diagram Figure 6 which works without the aid of an
auxiliary pump. I further reserve to myself to effect ignition by the aid of a
dynamo coupled to one of the shafts or in any other manner.
A new improvement in my machine with or without distributing mechanism
consists in the use, if required, as stationary casing, of a telescope shaped
cylinder A (see Figure 1). This cylinder has several different diameters and
may be in a single piece as indicated at Figure 2, or in several parts as shown
in Figure 1.
In Figure 1 I have shown a telescopically shaped cylinder for a triple expan-
sion engine (or compression) composed of annular portions; the male tores
being omitted in the drawing.
Figure 2 shows a telescopically shaped cylinder in a single piece for gas or
for oil engine. In this engine the suction takes place in the portion 2 and the
expansion in the portion 3. All the spaces such as a b c and d in both the
Figures 1 and 2 may if desired be connected together by a suitable pipe con-
nection B. either one with the other in succession or each with a central pipe,
for example the exhaust, in order to avoid any difference of pressure existing in
the interior of the casing tending to displace the internal cylinder in the direc-
tion of its axis.
Figure 2 shows a simple arrangement, in which one end of the casing is
cast in one with the cylinder.
Another improvement in connection with my motor consists in the. manner
adopted for supporting and centering the parallel shafts, carrying the male tores
and female tores, by means of brasses in form of cylindrical sleeves disposed as
indicated in Figure 3, and also in the special construction of the bearings
therefor.
The machine in this case is supposed to be constructed as shown in Figures 4
and 5 of my prior patent that is to say it is provided with two male tores carried
by two separate shafts. D and E are the shafts of the male tores, F the shaft
of the female tore. The cover G at the end of the cylindrical casing H. at any
appropriate part is provided with an enlargement I which forms part of the
lower half of a bearing the other portion thereof being formed by the cylindrical
casing H of which it forms a part. A brass or bush in a single piece and
cover I complete the bearing for the shaft D. It is obvious that the same
arrangement may be adopted in connection with the cover G at the other end of
the cylinder H. Two similar bearings support the shaft E and the shafts D, E,
and F, supported in this manner both in the covers and upon the external sur-
face of the casing, must necessarily be parallel.
I reserve to myself to lubricate by pressure the bearings by the aid of a
pump operated by one of the shafts of the machine or by any other convenient
means, and also to provide removable sleeves for the bearings so as to avoid
the trunnions of the shaft being worn out.
I reserve to myself the use of packing if desired to serve in lieu of those in
connection with grooved bearings for forming a tight joint perpendicularly to the
direction of escape.

page_text: I further reserve to myself the right to form the pistons and their recesses
corresponding to the male tores by any cylindrical or other surface in a manner
that they make tight joints.
In order to effect reversal of travel, I reserve the right to employ either a
variable fixing of the tores enabling the use of the same tores for travel in both
directions, or a pre-determined fixing with the specialization of certain tores for
each direction of travel. Figure 4 shows a device where a single low-pressure
tore (tore No. 2) imparts travel in either one direction or the other according
as it is placed in communication, by means of suitable devices, either with the
high pressure tore No. 1 or with the high pressure tore No. 3 where are similar
but oppositely fixed.
As regards the profile of the pistons of the female tores, and that of the
recesses formed in the male tores, I of course reserve the right to give them
any appropriate form. I would point out in particular two forms represented
in Figures 5 and 9 each of which has its advantages from certain points of view.
In the first;
1. As regards the piston its form is determined from m to n by a straight
line, from n to o'by an epicycloid, from o to p by an arc of a circle, from p
to q by the developing line of a circle and from tor by a straight line con-
necting with the circle by an appropriate curve.
2. As regards the forin of the recess, from m¹ to n¹ by an arc of a circle,
from n¹ to o by an epicycloid, from o¹ to p by an arc of a circle, from p¹ to g¹
by a straight line, and from q' to by the developing line of a circle.
In Figure 9 the piston and the recess are bounded by epicycloidal arcs.
I reserve the right to regulate positions of the various parts in any suitable
manner.
I especially reserve the simple method herein after described (see Figure 7).
By means of nuts screwed home upon bearing parts specially provided
upon the driving shaft, I maintain two movable collars arranged upon the driving
shaft in contact with the collars of the bearings carried by the two plates. The
collars may be, for example, a cheek of a gear wheel m" at one extremity and a
cheek of a coupling disc m at the other. The driving cylinder being thus
rendered motionless in the longitudinal direction, it is only necessary, in order
to fix the longitudinal position of the male tore to employ double helical toothed
gear wheels and fitted to a fixed point of the length of the shaft by
tightening the corresponding wheel by means of nuts against a suitably shaped
bearing part.
I also reserve the right to enclose the gear wheels in an oil bath q" of appro-
priate form, and fix upon the cylinder by means of 2 lugs qqq or in any
other suitable manner and supported either directly or by means of suitable
hangers bearings serving to maintain the extremity of the shafts. Figures 7
and 8 show a preferred form of oil bath provided with movable hangers v v v
facilitating centreing.
تيمم
1030
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
Improvements in Rotary Engines for Continuous Current, applicable
either as a Motor or as a Pump for Gas, Vapour, or Liquids.
I, LOUIS JULES JEAN BAPTISTE LE ROND, of 106, Rue de Miromesnil, Paris,

page_text: in the Republic of France, Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
In the Specifications accompanying applications for Letters Patent No.
1096898 and 1125898, I have described a rotary engine with continuous current,
and which is a modification of another previously patented rotary engine.
This invention relates to improvements in connection with my engine.
whereby the same is capable of working with or without distributing mechanism.
I reserve to myself the right of utilizing the rotary engine with or without
distributing mechanism. for the most varied purposes, be it as a motor without,
or with simple, or multiple expansion, or as a suction pump, a force pump, or as
an air pump or for compressing. purposes. I also reserve to myself the exclu-
sive right of grouping together in a single casing, by providing the rotary
cylinder with suitable channels or grooves, any combination of pumps and
motors together with or without distributing mechanism.
The Figure 2 of the drawings accompanying my Provisional Specification
shows an arrangement of gas and oil motors working without either slide or other
valve, and in which the groove or chamber 1 sucks in the air or mixture of air
and gas, or steam, compressed in the second groove or chamber 2 in which the
explosion or combustion takes place, the expansion taking place in a third
groove or chamber 3. It will be evident that in front of the first chamber
another or fourth chamber may be arranged to act as a pump which thus will be
direct acting. In Figure 21 have shown neither the pistons nor the male tores
or rollers, nor the corresponding apertures for the latter in the cylindrical
casing.
.
It may be noted that in Figure 6 which shows a section of the chamber 2
not a single point in the angle will ever come into communication with the
part u (shaded) wherein combustion or explosion takes place. In the same way
the angle y can never be in communication with the part (shaded) forming
communication between the chambers 1 and 2. By this arrangement I am
enabled, even during working, to charge an independent reservoir R with com-
pressed fluid, taken from the angle (e), and having thus or by any other means
compressed the fluid in an independent reservoir, I can set the machine work-
ing by admitting the compressed fluid into the angle (y) without special regard
to any manner of carburation and ignition. I reserve to myself the employment
of these various arrangements for starting, as represented in Figure 6, which
works without the aid of an auxiliary pump. I further reserve to myself to
. effect ignition by the aid of a dynamo coupled to one of the shafts or in any
other manner.
A new improvement in my machine with or without distributing mechanism
consists in the use, if required, as stationary casing, of a telescopically shaped
cylinder A (see Figure 1). This cylinder has several different diameters and
may be in a single piece as indicated at Figure 2, or in several parts as shown in
Figure 1.
In Figure 1 I have shown a telescopically shaped cylinder for a triple expan-
sion engine (for compression) composed of annular portions: the male fores
or rollers being omitted in the drawing.
Figure 2 shows a telescopically shaped cylinder, in a single piece, for gas or
oil engine. In this engine the explosion takes place in the portion 2 and the
expansion in the portion 3. All the spaces such as a, b, c, and d in Figure 1
and a c and d in Figure 2, may, if desired, be connected together by a suitable
pipe connection B, Figure 1 either one with the other in succession or each
with a central pipe, for example the exhaust, in order to avoid any difference
of pressure existing in the interior of the casing tending to displace the shaft
in the direction of its axis.

page_text: Figure 2 shows a simple arrangement, in which one end of the casing is cast
in one with the cylinder.
Another improvement in connection with my motor consists in the manner
adopted for supporting and centering the parallel shafts, carrying the male.
tores and female tores, by means of brasses in the form of cylindrical sleeves
disposed as indicated in Figure 3, and also in the special construction of the
bearings therefor.
The motor in this case is supposed to be constructed as shown in Figs. 4
and 5 of my prior Specification No. 11258 of 1898, that is to say, it is provided
with two male tores carried by two separate shafts. D and E are the shafts.
of the male tores, and F the shaft of the female tore. The cover G at the end
of the cylindrical casing H is provided with an enlargement I which is provided
with a semi-cylindrical recess which forms a part of the lower half of a cylindrical
bearing the other part thereof being constituted by a similar semi-cylindrical
recess in the casing H, so that the two recesses together form the lower half of
a cylindrical bearing. A cover 1" constitutes the upper half of the cylindrical
bearing for the shaft D, and the bearing is lined with suitable brasses or a bush.
It is obvious that the same arrangement may be adopted in connection with the
cover G at the other end of the cylinder or casing H. Two similar bearings
support the shaft E; and the shafts D, E, and F, supported in this manner
both in the covers and upon the external surface of the casing must necessarily,
be maintained parallel.
I reserve to myself the right to lubricate the bearings by pressure, by the
aid of a pump operated by one of the shafts of the machine, or by any other
convenient means, and also to provide removable sleeves for the bearings so as
to avoid the trunnions of the shaft being worn out.
I also reserve to myself the right to provide packing if such be found useful,
at the joints between the casing H and the partitions separating the chambers
1, 2, 3. Thus I may form grooves round the periphery of the partition which
separates chamber 1 from chamber 2, and these grooves may be packed with
suitable packing material so as to form a steam tight joint with the casing H,
thereby preventing leakage or escape of steam which might otherwise take place
from the chamber 1 into the chamber 2 round the edges of the partition.
I further reserve to myself the right to form the pistons and their correspond-
ing recesses in the male tores by any cylindrical or other surface in a manner
that they make steam-tight joints.
In order to effect reversal of travel, I reserve the right to employ either suit-
able means to obtain a variable angular relation of the tores, enabling the use of
the same tores for travel in both directions, or a pre-determined. fixed angular
relation between them, with the specialization of certain tores for each direction
of travel. Figure 4 shows an arrangement in which there are two chambers for
high pressure, one designated 1 and the other 3; said chambers being similar
to each other but one disposed so that its pistons are in advance of the pistons
of the other chamber. The chambers 1 and 3 may be placed at will in com-
munication with the single chamber 2 for low pressure. In order to make the
arrangement clear it may be pointed out that the admission and exhaust ports
of the chamber 1 are placed so as to produce rotation in the direction of the
arrow shown in the chamber 1, and that the ports of the chamber 3 are placed
so as to produce rotation in the direction of the arrow shown in the chamber 3.
The communications may be established either between the chamber 1 and the
chamber 2, or between the chamber 3 and chamber 2, and these two communica-
tions are such that the fluid arriving from the chamber 1 into the chamber 2 acts
in this chamber so as to cause it to turn in the direction of the arrow shown in
the chamber 1, and that the fluid arriving from the chamber 3 into the chamber 2
acts in this chamber 2 so as to cause it to turn in the direction of the arrow shown
in the chamber 3. It follows from this that when 1 and 2 are in communica-
tion, 3 is inactive, and when 3 and 2 are in communication 1 is inactive.

page_text: As regards the profile of the pistons of the female tores, and that of the
recesses formed in the male tores, 1 of course reserve the right to give them
any appropriate form. I would point out in particular two forms represented
in Figures 5 and 9 each of which has it advantages from certain points of view.
In the first;
1. As regards the piston its form is determined from m to by a straight
line, from to by an epicycloid, from o top by an are of a circle, from p
to g by the developing line of a circle and from ₫ to r by a straight line con-
necting with the circle by an appropriate curve.
2. As regards the form of the recess, from m' to n by au arc of a circle,
from too by an epicycloid, from o' to p' by an are of a circle, from p¹ to. q'
by a straight line, and from q' to by the developing line of a circle.
In Figure 9 the piston and the recess are bounded by epicycloidal arcs.
I reserve the right to regulate the positions of the various parts in any suitable
manner.
I especially reserve the simple method hereinafter described (see Figure 7).
By means of nuts Figure 7, screwed upon the driving shaft, I maintain.
two removable parts or collars arranged upon the driving shaft tightly in con-
tact with the flanges or collars of the bearings we carried by the casing as shown
in the drawing accompanying this Complete Specification. The parts or
collars may be, for example, a check of a gear wheel m" at one extremity and
a cheek of a coupling disc m at the other see Figure 7. The driving cylinder
being thus rendered motionless in the longitudinal direction, it is only neces-
sary, in order to fix the longitudinal position of the male tore to employ double
helical toothed gear wheels o", and "fitted to a fixed point of the length of
the shaft by tightening the corresponding wheel by means of nuts against a
suitably shaped bearing part.
I also reserve the right to enclose the gear wheels in an oil bath q" of appro-
priate form, and fixed upon the cylinder by means of three lugs qq qor
in any other suitable manner and supported either directly or by means of suit-
able hangers or bearings. serving to maintain the extremity of the shafts..
Figures 7 and 8 show a preferred form of oil bath provided with movable
hangers vvv facilitating centreing.
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. The grouping in any manner in a single stationary casing of channels or
grooves serving as motors with other channels or grooves serving as pumps
and in particular the application of similar groupings to heat engines such as
petroleum and gas engines, and the like, with or without reservoir adapted to be
charged during working and also to serve for starting the engine, or for any
other use, as hereinbefore specified.
2. The use of cylindrical or telescope-shaped casings i.e. of cylinders having
various diameters, such casings being composed of one or several parts and
provided or not with separation channels or grooves.
3. The intercommunication between the spaces where the inactive fluid is
allowed to accumulate so as to avoid any longitudinal displacement of the axis,
substantially as hereinbefore specified.
4. The method of reversing the compound tore-engines herein described, by
arranging the pistons of one high-pressure chamber in angular advance of the
pistons of the other high-pressure chamber substantially as herein before
described with reference to Figure 4 of the accompanying drawings.
5. The general arrangement herein before described for regulating the working
of the engine and in particular the use of the covers for the bearings integral

page_text: with the drums, of a tight casing for the gear wheels carrying either direct, or
through the intervention of mounted bearings, the end brasses of the shafts,
substantially as specified.
Dated this 16th day of February 1900.
HASELTINE, LAKE & Co.,
45. Southampton Buildings, London, W.C.,
Agents for the Applicant.