Improvements in Rotary Engines, Rotary Pumps, Rotary Blowers and Exhausters, and Rotary Fluid Meters.
Year: 1894

page_text: Date of Application, 30th Apr., 1894
Complete Specification Left, 30th Jan., 1895-Accepted, 6th Apr.,
1895
⚫ PROVISIONAL SPECIFICATION.
Improvements in Rotary Engines, Rotary Pumps, Rotary Blowers
and Exhausters, and Rotary Fluid Meters.
I, EDWARD FURNESS Engineer Cannon Street Buildings 139 Cannon Street.
London, E.C. do hereby declare the nature of this invention to be as follows:-
I provide a cylinder which I call the "outer cylinder." This cylinder is truly
bored out, having a radial slot or recess for an abutment, which works in it back-
wards and forwards, or a recess with flap-abutment. This abutment may serve for
a valve, or actuate a valve or valves for regulating the admission of the fluid, gas,
or vapour, and also for discharge of the same, or it may act as an abutment only,
and the fluid, gas, or vapour may be admitted or discharged in any other suitable
way through holes or passages in the cylinder itself, or through holes or passages
in the covers, by a valve or valves, actuated by suitable mechanism, or by the
"inside revolving piston (as hereafter described), rolling inside the "outer
cylinder" opening and closing ports.
"
The abutment may be kept up to its work against the outside circumference of
the "inside revolving piston," (as hereafter described), by fluid, gas, or vapour
pressure, or by an outside eccentric on the central revolving shaft, by means of
a lever, or levers. Or I use two rotary engines; or pumps on the same central
revolving shaft, and I work the abutment in the cylinder of one rotary engine, or
pump by the "inside revolving piston" (as hereafter described), working in the
cylinder of another rotary engine, or pump. The abutment is provided with a
stop, which is so arranged, that the abutment can only go so far back, and so that
it forms a part of the inside circumference of the "outer cylinder," and so that the
"inside revolving piston" (as hereafter described), whilst rolling over the abutment,
is supported by it. Or I use two rotary engines, or pumps, which work together,
having their axes, or central shafts, parallel to one another and I couple them by
gearing, or other means; and the abutments are pushed directly backwards and
forwards by the "inside revolving pistons" (as hereafter described), rolling inside
the "outer cylinders." In this case, the "inside revolving piston" (as hereafter
described), of one rotary engine, or pump, acts as a stop for the abutinent in the
cylinder of the other rotary engine, or pump.
<
Inside the "outer cylinder" is the smaller revolving cylinder, or piston (as
before referred to), which I call the "inside revolving piston," it revolves on a
crank pin of a crank shaft, and serves as a piston; it revolves eccentrically inside
the "outer cylinder," and it rolls, bearing against the internal circumference of the
outer cylinder," and moves the abutment backwards and forwards, and rolls over
it, (as before described). The "inside revolving piston" fits fluid, gas, or vapour
tight endways between the covers, which are provided to the "outer cylinder," or
is made tight by suitable elastic packing, or the "outer cylinder" is made longer
than the "inside revolving piston," and is fitted with a suitable piston at one end,
which is kept up against the end of the "inside revolving piston" by fluid, gas, or
vapour pressure, and so causing the "inside revolving piston" to bear also endways
against the opposite cover of the "outer cylinder," inaking the "inside revolving
piston" end ways fluid, gas, or vapour tight.
23
I cause the "inside revolving piston to be kept up to its bearing against the
inside circumference of the "outer cylinder," by means of an eccentrically bored

page_text: "
bush piece, which I place either round the crank shaft at the centre of the "outer
cylinder," or round the crank pin upon which the "inside revolving piston
revolves. When I apply the eccentrically bored bush piece at the centre of the
"outer cylinder" I apply it thus:-Through one of the covers of the "outer
cylinder" there is a central hole, and in this hole the bush piece is free to revolve;
the bush piece is truly turned on its outside circumference to fit the central hole in
the cover, and it is bored through with a hole to fit the crank shaft, this hole
is eccentric to the outside circumference of the bush piece; the outside circum-
ference of the bush piece is therefore concentric with the internal circumference
of the "outer cylinder," and the hole through it is eccentric to the internal
circumference of the "outer cylinder." This bush piece projects end ways
outside the "outer cylinder" beyond the cover, and has a radial lever, or some
such equivalent at its outer end. The crank shaft fits the hole in the bush
piece, and projects through the bush piece at its outer end, and also has a
radial lever, or some sich equivalent at its outer end; a spring between the
ends of these two levers causes them to be drawn together, or pressed apart
circumferentially. The crank shaft projects beyond the bush piece also inside
the "outer cylinder," and has a crank with a crank pin on which the "inside
revolving piston" revolves. It revolves on the crank pin, and rolls round on,
and against the inside circumference of the "outer cylinder," and is kept up
automatically to its bearing against the inside circumference of the "outer
cylinder" by the spring between the levers (as before described), which causes
the eccentrically bored bush piece to have a tendency to turn round on the
crank shaft, and so presses the "inside revolving piston" against the internal
circumference of the "outer cylinder." And whilst the crank shaft is revolving,
the eccentrically bored bush piece is caused to follow up by means of the spring
(as before described) at the ends of the levers of the bush piece and the crank
shaft; and which also keeps the "inside revolving piston pressed up, whilst
rolling against the internal circumference of the "outer cylinder," and so making
it fluid, gas, or vapour tight with the inside circumference of the "outer
cylinder," and providing for wear.. Or I use for this same purpose a volute coil
spring, one end of which I attach to the bush piece, and the other end I attach
to the lever on the crank shaft; or one end I attach to the crank shaft, and
the other end I attach to the lever on the bush piece.
"
">
In some cases, where I use a cranked shaft, and carry the shaft through both
covers of the "outer cylinder," I fit the eccentrically bored bush piece in central
holes in both covers, and I form the "inside revolving piston with an outer ring,
having the central boss in halves with 'arms, or a disc in halves, and which can be.
secured to the outer ring, when in place on the crank.
When I apply the eccentrically bored bush piece on the crank pin on which the
"inside revolving piston" revolves, the cover of the "outer cylinder" is bored
out with a central hole to fit the crank shaft, and in this central hole the crank
shaft revolves. The crank shaft projects inside the "outer cylinder," and has a
crank with a crank pin; the crank pin is longer than the central boss of the "inside
revolving piston"; the "inside revolving piston is bored out with a central hole,
larger than the crank pin, and in this hole is fitted the eccentrically bored bush
Jiece, the bush piece is of the same length as the crank pin, and the eccentric hole
through it fits the crank pin, it projects beyond the central boss of the "inside
revolving piston," and has a radial lever, or some such equivalent at the end next
the crank a projection, or lever for an abutment, or attachment, or some such
equivalent is fitted to the crank, and a spring between this abutment, or attachment
on the crank, and the lever on the end of the eccentrically bored bush piece, causes
the eccentrically bored bush piece to have a tendency to turn round on the crank
pin, and so presses the "inside revolving piston" against the inside circumference
of the "outer cylinder."
Or I use for this same purpose a volute coil spring, one end of which I attach to
the bush piece itself, and the other end I attach to the projection, or lever for

page_text: abutment, or attachment, as fitted to the crank; or one end I attach to the crank,
and the other end I attach to the lever at the end of the eccentrically bored bush
piece.
In some cases, when I use a cranked shaft, I bore out both covers of the "outer
cylinder" to carry the shaft, and I fit the eccentrically bored bush piece in halves
on the crank, with the lever next to either one or the other of the cranks, and
I form the "inside revolving piston" with an outer ring, having the central boss
in halves with arms, or a disc in halves, and which can be secured to the outer ring
when in place on the crank.
"
When I use my improvements as applied to rotary engines, the fluid, gas, or
vapour enters the "onter cylinder," and causes the "inside revolving piston to
revolve and roll round on the inside circumference of the "outer cylinder," and to
communicate motion and power to be given off from the crank shaft.
When I use my improvements as applied to rotary pumps, rotary blowers, and
exhausters, the power to drive is applied to the crank shaft, which revolving, causes
the "inside revolving piston " to revolve round inside, and roll round on the inside
circumference of the "outer cylinder," and the fluid, gas, or vapour is drawn into,
and expelled from the "outer cylinder."
When I use my improvements as applied to rotary fluid meters, the fluid enters
the "outer cylinder," and causes the "inside revolving piston" to revolve and roll
round on the inside circumference of the "outer cylinder," and to communicate
motion to the crank shaft, by which I drive a counter with suitable dials_for
numbering the revolutions, and showing the quantity of fluid discharged. The
measure of the capacity of the "outer cylinder"; minus the measure of the
capacity of the "inside revolving piston," and also minus the measure of the capacity
of the abutment, being the measure of the entering, or the discharged fluid in one
revolution.
Dated this 30th day of April 1894.
COMPLETE SPECIFICATION.
Improvements in Rotary Engines, Rotary Pumps, Rotary Blowers
and Exhausters, and Rotary Fluid Meters.
1, EDWARD FURNESS, Engineer, Cannon Street Buildings, 139 Cannon Street,
London, E.C., 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 reference to the manner in which I construct and arrange a
rotary motor or machine for use as a rotary engine, pump, blower or exhauster or
for use as a rotary fluid meter, the object of the invention being to produce a
motor or machine capable of being used with air fluid gas or vapour as the motive
power in a simple and positive manner.
In the accompanying 10 sheets of explanatory drawings
Figures 1, 2, 3 and 4 show one form of my improvements as applied to rotary
engines, showing the eccentrically bored bush piece at the centre of the outer
cylinder.
Figure 1 is a sectional elevation taken on line ZZ of Figure 4.
Figure 2 is a sectional elevation taken on line V V of Figure 4.
Figure 3 is an external elevation showing levers attached to the bush piece and
shaft with spring between.
Figure 4 is a sectional elevation taken on line xx, Figure 1.
Figure 5 is an external elevation of the same engine showing volute coil spring
attached to the bush piece and to the lever fixed on crank shaft.

page_text: Figures 6 and 7 is another arrangement with my improvements as applied to a
rotary engine or pump showing the eccentrically bored bush piece on the crank pin
on which the inside revolving piston. revolves.
Figure 6 is a sectional elevation taken on line W W, Figure 7.
Figure 7 is a sectional elevation taken on line x a Figure 6.
Figures 8 and 9 show a modification of the improvements as applied to a rotary
engine with the eccentrically bored bush piece also on the crank pin on which the
inside revolving piston revolves.
Figure 8 is a sectional elevation taken on line W W, Figure 9.
Figure 9 is a sectional elevation taken on line xx, Figure 8.
Figure 10 is a sectional elevation showing another modification of the improve-
ments as applied to a rotary engine showing the eccentrically bored bush piece on
the crank pin with a volute coil spring one end being attached to a prolongation
of the crank and the other end to the eccentrically bored bush piece.
Figure 11 is a sectional elevation of a rotary engine same as shown by
Figures 123 and 4, having an eccentrically bored bush piece at centre of the
outer cylinder, but having an eccentric formed on the shaft instead of a
crank pin.
Figure 12 is a sectional elevation showing the same arrangement of my
improvements as Figures 1, 2, 3 and 4 with eccentrically bored bush piece at
centre of outer cylinder, but having a flap instead of a radial abutment.
Figures 13 and 14 show the arrangement with the eccentrically bored bush
piece at the centre of the outer cylinder but having four springs as applied to
discs one fixed to the shaft and the other to the eccentrically bored bush piece
and also having an eccentric on shaft instead of a crank pin and as shown by
Figure 11.
Figure 15 is a sectional elevation of two rotary engines connected together
having their axes parallel their shafts being connected by gearing and Figure 16
is a sectional plan of same.
In carrying my invention into effect when I construct a rotary engine with
my improvements as shown by Figures 1, 2, 3 and 4 I provide an outer cylinder A
with a radial slot or recess with an abutment F and having covers to close the
ends a a¹. Inside this outer cylinder I place a smaller revolving cylinder or
piston B, which I call the "inside revolving piston," it revolves on the crank
pin C, and being driven round by the entering air fluid gas or vapour it
revolves eccentrically inside the outer cylinder A and it rolls bearing against
the inside circumference of the outer cylinder A, and it moves the abutment F
backwards and forwards or up and down and rolls over it when passing the
recess formed for the abutment to work in the outer cylinder A. The abut-
ment F may be formed in the shape as shown by the drawings and act as a
valve to admit the air fluid gas or vapour and also for the discharge of same.
The air fluid gas or vapour also acting on the top or end of the abutment F
keeps the abutment up to its work and in constant contact against the outside
circumference of the inside revolving cylinder B. A spring stop K is provided
which is arranged so that the abutment F can go only so far back and so that
it follows up the inside revolving piston B and supports it whilst rolling over
the abutment F when passing the recess for the abutment in the outer cylinder A.
The inside revolving piston B fits, air fluid gas or vapour tight endways between
the covers a a¹ of the outer cylinder A or it may be made air fluid gas or
vapour tight by suitable packing rings or elastic packing.
I cause the "inside revolving piston" B to be kept up to its bearing against
the inside circumference of the outer cylinder A by means of an eccentrically
bored bush piece D which I place round the crank shaft C through a truly
bored central hole in one of the covers a¹ of the outer cylinder A and having
a boss for the purpose of increasing the length of bearing. The bush piece Ď
is truly turned on its outside circumference to fit the central hole in the
cover a and can revolve freely in it. The bush piece D is bored through

page_text: with a hole to fit the crank shaft C; this hole for the crank shaft is eccentric
with the outside circumference of the bush piece D the outside circumference
of the bush piece D is concentric with the inside circumference of the
outer cylinder A and the hole through it for the crank shaft C is eccentric
to the internal circumference of the outer cylinder A. The bush piece D
projects end ways outside beyond the cover a of the outer cylinder A and
has a radial lever or arm d¹ at its outer end. The crank shaft C fits the
hole in the bush piece D and projects through the bush piece D at its outer
end, and has also a radial lever or arm dª rigidly fixed upon it, a spring E
between the ends of these two levers and d' causes the levers to be drawn
together circumferentially. The crank shaft C projects also beyond the bush
piece D inside the outer cylinder A and has a crank with a crank pin C' on
which the inside revolving piston B revolves.
The action of the arrangement
is as follows:-Air fluid gas or vapour enters through the branch pipe 2 and
passes down through the passage O in the abutinent F (which acts as a valve)
entering the outer cylinder A and presses on the surface of the "inside revolving
piston" B causing it to revolve round in the outer cylinder A, it revolves on the
crank pin C and rolls round on and against the inside circumference of the
outer cylinder A and it is kept up automatically to its bearing against the inside
circumference of the outer cylinder A by the spring E between the levers &
and the tension of which draws the levers d and d¹ together circumferentially
and which causes the eccentric bored bush piece D to have a tendency to turn
round keeping the inside revolving piston B constantly pressed up against the
inside circumference of the outer cylinder A and making the outside circumference
of the inside revolving piston B at the point of contact with the inside
circumference of the outer cylinder A air fluid gas or vapour tight and also
providing for wear.
Sometimes for this same purpose instead of a single spring between two levers
I use a series of two or more springs with a series of levers or arms or I use two
discs one L2 Figures 8 and 9 on the shaft C, and one L' on the eccentrically
hored bush piece D and I use a number of springs e e e e as shown by Figures 13
and 14.
The air fluid gas or vapour after driving the revolving piston B round passes
out through the passages O' in the abutment F and exhausts through the branch
pipe g. For the purpose of driving from the engine shaft C Figures 1, 2, 3, 4
where the eccentric bored bush piece is central with inside circumference of outer
cylinder, I place a fly wheel or driving pulley H on the crank shaft C which is
made long enough for this purpose but as the crank shaft C has an eccentric
motion due to the eccentric hole in the bush piece D I bore out the fly wheel or
driving pulley H also to this same amount eccentric and I fix the wheel or pulley H
on the shaft in such a position circumferentially so as to make the circumference
of the wheel or pulley H run truly whilst revolving. Instead of a spring E
attached to levers d² and d' as shown in Figures 1, 2, 3 and 4 for the purpose of
causing the eccentrically bored bush piece to have a tendency to turn round on the
crank shaft C in the central hole in the cover a¹ of outer cylinder A, I sometimes
use a volute coil spring El as shown by Figure 5 one end of which I attach to a
lever or arm d² on the crank shaft C and the other end I attach to the eccentrically
bored bush piece D or one end 1 attach to a lever which may be on the bush
piece D and the other end I attach to the crank shaft C.
In some cases where I use a cranked shaft and carry the shaft through both
covers a a¹ of the outer cylinder A, I fit the eccentrically bored bush piece D in
central holes in both covers and I form the inside revolving piston B with an outer
ring, having the central boss in halves with arms, or a disc in halves, which can be
secured to the outer ring when in place upon the crank.
When I apply the eccentrically bored bush piece D on the crank pin C¹ on which
the inside revolving piston B revolves as shown by Figures 6 and 7, the cover a¹ of
the outer cylinder A is then bored out with a central hole to fit the crank shaft C

page_text: and in this central hole the crank shaft C revolves. The crank shaft C projects
inside the outer cylinder A and has a crank with a crank pin C₁ the crank pin C¹
is longer than the central boss of the inside revolving piston B, and the inside
revolving piston is bored out with a central hole larger than the crank pin C¹ and
in this hole is fitted the eccentrically bored bush piece D. The bush piece D is
of the same length as the crank pin C and is bored to fit the crank pin C¹, and
projects inwardly beyond the central boss of the inside revolving piston B and has
a radial lever n next the crauk p. The crank p is prolonged and forms au
attachment for one end of the spring E', the other end of the spring F being
attached to the radial lever n on the eccentrically bored bush piece D. The
tension of the spring E causing the eccentrically bored bush piece D to have a
tendency to turn round on the crank pin so causing the inside revolving piston B
to be kept pressed up automatically against the inside circumference of the outer
cylinder A.
I sometimes vary this arrangement as shown by Figures 8 and 9 and I place a
lever or levers or a disc 1 on the eccentrically bored bush piece D at the outer
end of the crank pin C' and I fix on the outer end of the extended crank pin C' a
corresponding series of levers or a disc L' with a spring el or springs el el el so as to
give the necessary turning tendency to the eccentrically bored bush piece D. and
causing the inside revolving piston B to be kept automatically pressed up against
the inside circumference of the outer cylinder A.
Sometimes I again vary this arrangement as shown by Figure 10 and use a
volute spring E³, one end I attach to the bush piece D and the other end I attach
to a prolongation p' of the crank p, or one end I attach to the crank p and the other
end to a lever on the eccentrically bored bush piece D.
In the accompanying drawings in every case the springs on the levers or discs for
causing the eccentrically bored bush piece to have a tendency to turn round and so
press the inside revolving piston B against the inside circumference of the outer
cylinder A are shown as acting in tension, the lever or disc on the crank shaft C,
or on the crank pin C, being in advance of the lever or disc on the bush piece D in
the direction of rotation, pulls the bush piece D round, but I sometimes place the
lever or disc on the bush piece D in advance of the lever or disc on the crank shaft C
or crank pin C¹, and I connect then by springs which act in compression forcing the
levers apart circumferentially and so, driving the bush piece D round. In place of
coiled springs I sometimes use flat springs, bent or straight or any suitable shape
either for drawing the levers together or pressing them apart circumferentially.
In some cases when I use a cranked shaft 1 bore out both covers a a' of the
outer cylinder A to carry the shaft and I fit the eccentrically bored bush piece D
in halves on the crank, the eccentrically bored bush piece D having a lever next to
either one or the other cheeks of the crank and I form the inside revolving piston B
with an outer ring having the central boss in halves with arms, or a disc in halves,
which can be secured to the outer ring when in place on the crank.
Instead of employing a crank pin and crank shaft as hereinbefore described I
sometimes arrange my shaft as shown in Figures 11, 13 and 14 with an eccentric or
enlarged crank pin C formed upon the shaft C the springs and eccentric contact
making bush piece D being applied as hereinbefore described when using a crank
and crank pin.
Instead of using a radial abutinent a hinged, curved or flap abutment T may be
used as shown in Figure 12 the pressure coming in on one side and exhausting
on the opposite side g; the eccentric contact making bush D with levers d' and d³
and spring E or discs and springs being employed in the manner hereinbefore
described.
-
Figures 15 and 16 illustrate a duplex arrangement of my improvements as applied
to a rotary engine having two cylinders A A in each of which is a revolving
piston B and having the two abutments F F in a line which act as valves and
admit and exhaust the air, fluid, gas or vapour to and from each cylinder A A.
A spring between the two abutments F F allows for any slight irregularity of

page_text: motion and keeps the abutments F F up to their bearing on the outside.
circumference of the inside revolving pistons B B. Cover plates are provided on.
each side of the abutments F F to prevent the air, fluid, gas, or vapour from
passing through from the inlet side to the exhaust or outlet side g³. I provide
each inside revolving piston B with a crank pand crank pin C' and an eccentrically
bored bush piece D with spring attachments as hereinbefore described when
constructing a single cylinder engine. And I gear the two crank shafts C C
together by ordinary tooth wheels or in any other suitable way, and I make use of
the gear wheels for the purpose of attaching the spring or springs for causing the
eccentrically bored bush pieces D to have a tendency to turn round on the crank
shafts C C and press the inside revolving pistons B B against the inside
circumference of the outer cylinders A A. And I place the cranks in position
within each cylinder so as to enable the full power from one inside revolving
piston B to be given off when the other is at its worst position. Figure 16 shows
also a means for making the inside revolving pistons B B end ways air, fluid, gas,
or vapour tight by means of the pistons J J, air, Huid gas or vapour being admitted
behind the pistons J J presses them up against the end of the inside revolving
pistons B B and causes the inside revolving pistons B B to bear also end ways.
against the opposite cover a of the outer cylinder A A and thus making the inside
revolving pistons B B endways air, fluid, gas, or vapour tight. In the drawings
the pistons J J are shown with leathers for fluid pressure, but the pistons J J may
be made to fit the cylinders A A or packed in any other suitable way.
In some cases these end pistons JJ are not used the inside revolving pistons B B
being made to fit themselves endways between the covers a a' of the outer
cylinders A A air fluid gas or vapour tight, or they may be made air, fluid,
gas or vapour tight by suitable packing rings or elastic packing.
When I use my improvements as applied to rotary engines, the air, fluid, gas, or
vapour enters the outer cylinder A through the branch pipe 12 and causes the
inside revolving pistou B to revolve and roll round on the inside circumference of
the outer cylinder A and to communicate motion and power to be given off from
the crank shaft C and after driving the inside revolving piston B round in the
onter cylinder A it exhausts through the branch pipe g*.
When I use my improvements as applied to rotary pumps rotary blowers and
exhausters, the power to drive is applied to the crank shaft C which revolving
causes the inside revolving piston B to revolve round inside and roll on the inside
circumference of the outer cylinder A, and the air, fluid, gas, or vapour is drawn
into the outer cylinder A through the branch pipe and expelled from the outer
cylinder A through the branch pipe 2. In constructing a rotary pump the
abutment forming the valve is placed with its faces t t as shown by Figure 6 in
opposite position to that when used as a rotary engine and as shown by
Figures 1, 2, 10 and 11.
When I use my improvements as applied to rotary fluid meters, the fluid enters
the outer cylinder A and causes the inside revolving piston B to revolve and roll
round on the inside circumference of the outer cylinder A, and to communicate
motion to the crank shaft C by which I drive a counter with suitable dials for
numbering the revolutions; and showing the quantity of fluid discharged. The
measure of the capacity of the outer cylinder A minus the measure of the capacity
of the inside revolving piston B and also minus the measure of the capacity of the
abutment F, being the measure of entering, or the discharged fluid in one
revolution.
I do not confine myself to any particular form of abutment or valve or any
means for actuating the abutment or valves. The abutment is shown in the
drawing as acting as a valve being pressed downwards or inwards by the air, fluid,
gas, or vapour pressure, and regulating the admission of the air, fluid, gas, or
vapour into the cylinder and also for discharge of the same but I
may sometimes
make it to act as an abutment only, and the air, fluid, gas, or vapour may be
admitted or discharged in any other suitable way, through holes or passages in the

page_text: cylinder itself, or through holes or passages in the covers, by a valve or valves
actuated by any ordinary mechanism, or by the inside revolving piston passing
openings or ports. The abutment also may be kept up to its work against the
outside circumference of the inside revolving piston, by an outside eccentric on the
central revolving shaft by means of a lever or levers, or by weighted levers,
weights or springs, or two rotary engines, or pumps may work on the same central
shaft and the inside revolving piston in one rotary engine or pump may work the
abutment backwards and forwards in the other rotary engine or pump by means of
levers and rods or in any well known manner.
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:
First. In a rotary engine, motor, pump, blower exhauster or a rotary fluid meter
having an outer cylinder with an abutment, the inside revolving cylinder or piston
revolving on a crank pin, crank, or eccentric on a shaft and rolling round on the
inside circumference of an outer cylinder, being thrust outwards from a bearing
central with the inside circumference of the outer cylinder, and automatically kept
pressed up against and in constant contact with the inside circumference of the
outer cylinder substantially as and for the purposes herein before described.
Second. In combination with the inside revolving cylinder or piston which
revolves on a crank pin crank or eccentric on a shaft and rolls round on the inside
circumference of the outer cylinder, the eccentrically bored bush piece which
revolves with the crank shaft in a bearing central with the inside circumference of
the outer cylinder and which by means of a spring or springs attached to a lever or
levers disc or discs, fixed on the bush piece and on the crank shaft is caused to have
a tendency to turn round on the crank shaft, and so causing the inside revolving
cylinder or piston to be automatically kept pressed up against and in constant
contact with the inside circumference of the outer cylinder, substantially as and
for the purposes herein before described and as illustrated in the accompanying
drawings.
Third. In combination with the inside revolving cylinder or piston which
revolves on a crank pin crank or eccentric on shaft and rolls round on the inside
circumference of the outer cylinder, the eccentrically bored bush piece surrounding
the crank pin crank or eccentric on which the inside revolving cylinder or piston
revolves and which by means of a spring or springs attached to the crank or to a
lever or levers or a disc or discs fixed on the crank pin and on the bush piece, is
caused to have a tendency to turn round and so causing the inside revolving
cylinder or piston to be automatically kept pressed up against and in constant
contact with the inside circumference of the outer cylinder, substantially as
and for the purposes herein before described and illustrated in the accompanying
drawings.
Dated the 24th day of January 1895.
EDWARD FURNESS.