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Патент USA US2132153

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Oct. 4, {1938.
R. E. J. GARRETSON
2,132,153
ROTARY INTERNAL COMBUSTION ENGINE
Filed Sept. 30, 1935
2\ Sheets-Sheet 1 ‘
My
Oct. 4, 1938.
R. E. J. GARRETSON
'
2,132,l53
ROTARY INTERNAL COMBUSTION ENGINE
Filed Sept. 50, 1955
2 Sheets-Sheet 2
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2,132,153
Patented Oct. 4, 1938
UNITED STATES PATENT OFFICE
2,132,153 ,
ROTARY INTERNAL COMBUSTION ENGINE
Richard E.‘ J. Garretson, Gering, Nebn, assignor
of one-half to Eugene S. Starrett, Hartvillc,
Wyo.
Application September 30, 1935, Serial No. 42,959
'20laims. (Cl. 123-16)
The invention relates to rotary internal com
nates the upper portion of the casing and 2 the
bustion engines and has for its object to provide a * lower portion‘ of the engine casingpsaid portions
device of this character comprising a casing hav
being bolted together by means of bolts 3. The
ing a concentric rotor therein of smaller diameter ‘casing sections i and 2 are preferably provided
5 than the diameter of the casing chamber and pro
with water chambers 4, through which water may
vided with transverse packing strips or abutment be circulated in any suitable manner for cooling
carried by the casing and packing strips carried purposes. The motor may be supported on any
by the said rotor said last mentioned strips form
kind of a support by securing the apertured
ing vanes against which the expanding gases act ?anges 5 to the support. Disposed within the cas
10 for forcing the rotor to rotate.
ing I in spaced relation to the inner periphery 6 10
A further object is to yieldably mount the pack
thereof is a rotor ‘I. Rotor 'I is mounted on the
ing strips and to bevel the casing carried packing transverse shaft 8, which may lead to any position
strips in the direction of‘rotation of the rotor for operating mechanisms. The rotor ‘I is of
whereby said strips may cam past each other dur
smaller diameter than the interior diameter of
15 ing the rotation of the rotor during the intake and the casing I, therefore it will be seen byreferring
15.
exhaust operations.
to Figure 1 that a combustion chamber 9 is pro
A further object is to provide the outer periph
vided between‘ the vanes I0 carried by the outer
ery of the rotor with packing rings adjacent the periphery of the rotor, the casing, the peripheral
ends of the rotor and outside of the transverse rings i6 and I1, and abutments II carried by the
20 vanes for sealing against transverse power loss. inner periphery of the casing I. It will be noted 20
Also to provide packing rings in the sides of the that the abutments II are provided with bevelled
rotor.
edges I2, bevelled in the direction of rotation of
A further object is to provide an oil reservoir at the rotor which rotates in the direction of the
the bottom of the casing and rotor for lubricating
25 the rotor as it is rotated.
A further object is to ‘provide a main exhaust
arrow a, hence it will be seen that the rounded
corners I3 of the packing strips or vanes I 0 will
easily. ride over the abutments II. The abut 25
port and an auxiliary exhaust port, said auxiliary
exhaust port opening immediately after the in
ments II move radially outwardly against the
action of the springs I4 behind theabutments.
I take has closed for allowing escape of gases which
I 30 may pass the transverse packing strip.
Springs I5 are also provided beneath the vanes
A further object is to provide packing strip
springs having compound bends therein beneath
the transverse packing strip and extending under
the packing rings at the ends of the transverse
35 vanes for assisting in the operation thereof.
With the above and other objects in view the
invention resides in the combination and arrange
ment of parts as hereinafter set forth, shown in
the drawings, described and claimed, it being
40 understood that changes in the precise embodi
ment of the inventiommayje made within the
scope of what is claimed without departing from
the spirit of the invention.
In the drawings:
'
,
Figure 1 is a vertical longitudinal sectional view
through the engine parts being shown in eleva
tion.
Figure 215a view in elevation of the rotor.
Figure 3 is a top plan view of the engine.
50
F.‘ gure 4 (is an enlarged vertical transverse sec
II), but they are su?iciently strong to overcome the
iorce'of the springs I4 unless some of the abut 30
ments become stuck.
The springs It and I5 are preferably formed
with compound bends therein as clearly shown in
Figure 4, and it will be noted that the springs I5 35
perform the double function of forcing the vanes
outwardly and expanding the peripheral ring I6
mounted in the periphery of the rotor ‘I. Addi
tional peripheral rings I? are provided in the rotor
‘I, as well as side rings I8 in the sides thereof.
The ends IQ of the springs I5 extend into the
grooves 20, in which the rings l6 are mounted, and
engage the inner periphery thereof, therefore it
will' be seen that they extend through the trans
verse slot 2| in which the vanes III are mounted, 45
and into the grooves 20.
'
The periphery of the rotor ‘I is provided with a
pocket 22, into which supercharged gas is received
from an intake port 23 when the intake valve 24 is
opened. The engine is provided with a main 50
tional detail view taken on line ‘4-4 of Figure 1
through one side of the rotor showing the packing
exhaust port 25 and an auxiliary exhaust port 26
strip therein.
exhaust port 26 is important. ,When the gas
.
closed by a valve 211. ' The purpose of the auxiliary
Figure15 is a vertical longitudinal sectional view
mixture is ?red there may occur a back-?re past
‘55 through ,‘adjacent portions of the'rotor and casing
the abutments II. The auxiliary port being open
will let this back-?re out through the auxiliary
port. Also when the rotor is rapidly rotating it.
would be dangerous for the inlet valve 24 to open
with ?re lingering adjacent the ‘same to set oi the
showing\the vanes in the process of passing the
abutments-
'
'
Figure 6 is a perspective view of the slidable
intake and exhaust valve.
60
Referring to the drawings, the numeral I desig-_ ' gases assembled in'the ‘inlet 23. Without the use
2,182,168
2
of the auxiliary exhaust port 26 it would be ‘rotor 1 continues in the direction of the arrow a
dangerous to operate the engine. After the ?ring under the in?uence of the expanding gases in the
operation at the spark plug 28 the gases expand in pocket 22 and chamber 9 acting against the walls
the pocket 22 and cause the rotor to revolve in the of the chamber, and vanes l0 and abutments ll
direction of arrow a. The'exhaust gases are then until the pocket 22 reaches the exhaust port 25,
exhausted through the exhaust port 25. It will and at which time the burnt gases are exhausted
from the pocket 22 and chamber 9. As the rotor
‘I continues its movement in the direction of the
arrow a, vanes III will pass the abutment members
Ila and the pocket 22 will be .in a position to 10
10 gases.
The operation is as follows: When the pocket receive the next charge of gas. This operation
22, inits rotation, reaches the intake port 23, the , continues. It will be noted there is no compres
supercharged gas enters the combustion pocket sion as the charge, as previously stated, is forced
and space between the rotor and casing in front into the pocket 22 under pressure, and the exhaust .
takes place incident to the expansion of the burnt 15
15 of the combustion pocket 22 and between the' gases through the exhaust port 25. A single rotor
vanes l0 and abutments ll. When the combus
be noted that by providing the space 9 a constant
increase of capacity in connection with the pocket
22 is provided for allowing "the expansion of the
the exhaust valve 21 to the auxiliary exhaust port
26; the exhaust valve 21 remaining open so that
is shown for illustrative purposes, but devices of
this character may have any number of rotors for
distributing the power around the driven shaft.
Valve 29 controlling auxiliary exhaust port 26 20
opens at the time of ?ring, thereby allowing any
back ?ring gases to exhaust before the intake port
any gases which may pass the vanes II] in the
direction of rotation will be exhausted, and the
The invention having been set forth what is
tion pocket passes the intake port 23, the valve 24
is opened and the combustion pocket 22 receives
its gas and passes the ?rst abutment I l, the valve
20 slides inwardly, closing the intake 23 and opening
?re will be directed through the auxiliary exhaust
26, therefore it will be seen that these gases will
be kept from lingering around the intake port or
seeping past rings lla into the oil reservoir I“.
The ignition takes place after. the pocket 22 has
advanced in the direction of the arrow a. beyond
the abutments l I and at which time spark plug 28
(Fig. 1) ignites the charge. The expanding
gases will act against the wall of the pocket 22 and
the abutments H and the vanes ID to rotate the
. rotor.
At the time of ?ring the intake port 24
is closed to prevent newly formed gases from being
taken into the machine. The engine is provided
with a conventional form of spark plug 23, which
may be controlled by~ any} kind of an ignition
40 system and the valves 24 and 21 are transversely
slidably mounted in the casing I, and moved
inwardly and outwardly by a rocker arm 29, one
end 30 of which is disposed within‘a cam slot 32 of
a rotatable cam 33 carried by the shaft 8 and the
45 other end in an enlarged opening 21b in the valve
21, however it is to be understood that any kind of
valve control mechanism may be used, and the
mechanism as shown is for illustrative purposes
only. The rocker arm 29 is rockably mounted on
a supporting bracket 29a carried by the engine
casing.
‘
From the above it will be seen that a rotary gas
I
claimed as new and useful is:
25
1. A rotary internal combustion engine com~
prising a. casing having a cylindrical chamber
therein, a cylindrical rotor concentrically disposed
within said chamber and of less diameter than
the chamber, a ch/ag'ge receiving pocket in the
rotor, radially moun ed abutments carried by the
wall of the chamber, radially mounted vanes car
ried by the’ rotor, said vanes being in advance of
the charge receiving pocket in the rotor, said
vanes and abutments being yieldably mounted
whereby they will simultaneously yield in relation
'85
to each other as they engage during the rotation
of the rotor, an intake port for admitting super
charged gas to the rotor pocket, an exhaust port
for exhausting burnt ‘gas, a spark-plug carried by '40
the casing on the ?ring side of the intake port, an
auxiliary exhaust port on the ?ring side of the
intake port, valve mechanism controlling the
intake and auxiliary ports, packing rings within
the casing between the intake and exhaust ports, 45
said abutments being carried by the casing
between the sparkplug and intake port.
2. A rotary internal combustion engine com
prising a casing having a cylindrical chamber
therein, a cylindrical rotor concentrically disposed
within said chamber and of less diameter than the
chamber, a charge receiving pocket in the rotor,
engine is provided which is simple in construction,
abutments carried by the wall of the chamber,
the parts reduced to a minimum, and one where
in a supercharged fuel is taken into the machine,
carried to a combustion point at spark plug 28 and
?red so that it will act against vanes l0 and a wall
advance of the charge receiving pocket therein, 55
said vanes and abutments being yieldably mount
ed whereby they will simultaneously yieldably
of the pocket 22 in the rotor for rotating the rotor,
and that any burnt gases forced past the packing
60 strips or vanes l0 will leave the machine through
the exhaust ports.
The rotor ‘I is preferably provided with a coun
terweight ‘la for counterbalancing the same dur
ing rotation.
-
The inner periphery of the casing I is provided
with bevelled abutments Ila similar to abutments
l2 between the intake port 23 and the oil reservoir
for preventing passage of gases to the exhaust
port 25.
70
23 is again opened.
'
In operation when the pocket 22 reaches the
intake port 23, valve 24 is opened by the cam
rocked arm 29, see Figure 3. As the rotor con
tinues in the direction of arrow a, valve 24 is
closed, and after the vanes l0 pass the abutments
15 II, the charge is fired by the spark plug 23.
The
vanes carried by the rotor, said vanes being in
engage and pass each other during the rotation of
the rotor, means for admitting super-charged gas
to the rotor pocket, means for exhausting burnt
gas, said means for admitting super-charged gas
comprising an intake port, said means for ex
hausting burnt gas comprising an exhaust port,
and auxiliary exhaust port, said auxiliary exhaust
port and intake port being adjacent said abut 65
ments and the auxiliary exhaust port between the
intake port and the abutments and valves cooper
ating with the intake ports and the auxiliary
exhaust port whereby super-charged gas may be
supplied to the rotor pocket in its intake position 70
and moved to the ?ring position and the auxiliary
exhaust port opened after the rotor reaches its
?ring position.
RICHARD a. J. aman'rson.
75
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