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Патент USA US2117650

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May 17, 1938- "
J. D. CAMERON
2,117,650
ROTARY SLEEVE} VALVE FOR INTERNAL COMBUSTION ENGINES
Filed Nov. 19, 1955
53
28 5o 5: 47
48
_ 26 so 48
49
INVENTOK
L/d-TTZGS Q Cameran
Attc'r'ney
Patented May 17, 1938
2,117,650
UNITED STATES PATENT ()FFIQE
2,117,650
ROTARY SLEEVE VALVE. FOR INTERNAL
COMBUSTION ENGINES
James D‘. Cameron, Madawaska, Ontario,
Canada
Application November 19, 1935, Serial No. 50,607
In Canada April 11, 1935
3 Claims.
This invention relates to improvements in a
rotary sleeve valve for internal combustion en
gines. Its primary object being to devise and
construct a rotating sleeve valve of improved
5 design.
A further object of the invention is to devise
a rotary valve positioned adjacent the head of
an engine and surrounding the upper portion of
the engine cylinder having means carried by
10 and above the head to rotate the same, said
means being operable from the main shaft of the
engine to which the said means must be de?nite
ly related for purposes of timing the rotating
position of the valve with respect to the position
of the engine piston in the cylinder.
'
A still further object of the invention resides
in providing a rotary valve sleeve mounted in a
channel surrounding the upper end of the engine
cylinder, the valve sleeve and channel having co
acting shoulders to establish a seal between the
upper end of the valve sleeve and channel to pre
vent loss of compression and escape of gases into
the cylinder head.
‘
With these and other objects in view that may
appear While the description proceeds, the inven
tion consists in the novel construction and ar
rangement of col-operating parts as hereinafter
more speci?cally set forth, claimed and shown in
the accompanying drawing forming part of this
application and in which—
Fig. 1 is a sectional elevation through an in
ternal combustion engine constructed in accord
ance with my invention.
Fig. 2 is a fragmentary cross section, showing
w the vertical packing keys for the valve sleeve,
and,
Fig. 3 is a vertical section taken on line A-A
of Fig. 2.
Referring more in detail to the drawing in
40 which similar reference characters designate cor
responding parts throughout the several views
.
..
PM)
it will be seen the invention comprises in general
a cylinder block 2|] having one or more cylinders
2| constructed therein and surrounded by a water
jacket 22 having the usual circulation and radia
tion means in conjunction therewith. A piston 23
is reciprocally mounted within the cylinder and
connected to the main shaft of the engine by the
connecting rod 24.
The rotary valve comprises an annular sleeve
25 having an inner shoulder 26 and an outer
shoulder 21 formed on the upper part thereof.
Extending upward from the shoulder 21 is a
gear ring 28 while on the inner side thereof is an
5 annular channel 29. The sleeve 25 is rotatably
(C1. 123——80)
mounted in a channel 30 formed in an annular
ring 3| in the cylinder block and positioned be
tween the cylinder wall 32 and the outer wall 33
and depending into the water jacket 22 in a man~
her to permit the water therein to surround the
same and thereby maintain a uniform tempera
ture and prevent the same from becoming over
heated. Shoulders 34 and 35 are formed in the
upper portion of the ring 3| to receive the cor
responding shoulders formed on the sleeve. The
shoulders in the ring form a seat for the sleeve
supporting the upper portion of the sleeve so
that the lower portion is free to rotate in the ring.
The valve seat also establishes a seal between the
upper end of the sleeve and ring preventing the
leakage of gases into the cylinder head.
An intake port 36 and outlet port 31 are con
structed in the outer cylinder structure adjacent
each other and connect with the usual intake
and exhaust manifolds of the engine. The said
ports are continued in the inner cylinder wall
structure as at 4c and 4|, while the said annular
sleeve is positioned in the channel 3|] between
the inner and outer ports. A single port 42 is
constructed in the annular sleeve and positioned 13 Li
to register with the aforesaid intake and exhaust
ports as the sleeve rotates.
‘
The compression keys 43 are positioned in ver
tical keyways 44 out in the ring 3| and are ar
ranged to engage the inside of the sleeve 25. U
Springs 45 are provided and are placed behind
the keys in the key~ways in a manner to urge the
same into contact with the said sleeve. These
keys are placed on each side of the intake and
exhaust ports and one may be placed in between
the same as shown in Fig, 2. The keys act in the
same capacity as the compression rings 46 on the
piston and prevent loss of compression around
the sleeve.
The cylinder head 4'! is secured on the cylinder
block in the usual manner by bolts 48 and the
water jacket is extended thereinto as shown at
49. An annular groove 50 is provided on the
underneath side thereof to accommodate the gear
ring 28 which projects upward into the same and 45
an annular flange 5| is formed thereon and de
pends below the face thereof into the channel 29
in the top of the sleeve 25. A threaded boss 52
is provided on the top of the head to receive the
spark plug 53.
The valve or sleeve rotating mechanism com
prises a shaft 54 rotatably mounted in bearing
boxes 55 secured on the top of the cylinder head.
Said shaft is centrally disposed with respect to
the cylinder and is provided with drive means 55
2
2,117,650
on the end thereof connected with the engine
shaft. A series of gear wheels 58 are mounted
on the shaft 54 in relation to each cylinder.
These gears extend downward through slots in
the cylinder head to engage the gear ring 28 and
thereby rotate the sleeve.
Special means may be devised for lubricating
the rotating sleeve. In Fig. 1, I have shown one
form of such which comprises an ori?ce Si in the
10 cylinder head into which the lubricant is to be
fed.
A feed pipe may be threaded therein and
valve seat formed in the upper portion of said
channel comprising opposed shoulders in the side
walls thereof, corresponding shoulders on the op
posed sides of said sleeve valve adapted to engage
and rest upon said valve seat to establish a seal
between the upper end of the valve sleeve and
channel, a ring gear formed integral with the
upper end of said sleeve valve and extending into
the cylinder head, an annular depending ?ange
formed integral with said cylinder head in con
oil supplied under pressure or in any other suit
annular recess formed in the upper end of said
able manner. The said ori?ce terminates at the
bottom of the annular flange 51 and a number of
small vertical ori?ces or ducts 52 are drilled in
the sleeve 25 extending to the bottom thereof and
lateral ducts 63 connecttherewith to deliver the
lubricant on the wall of the channel 30.
As previously stated the rotation of the shaft
54 bears’ a direct relation to the rotation of the
sleeve valve inside of said ring gear, intake and
main shaft of the engine, and the gearing must
be designed to produce a ratio of precisely one rev
olution of the rotating sleeve 25 to four revolu
tions of the main shaft. The sleeve rotates one
quarter revolution on the downward and the port
is open for the exhaust stroke.
The sleeve con
tinues to rotate and passes the closed position
from exhaust to intake when the piston reaches
approximately the top of the exhaust stroke.
The intake stroke then commences as the port or
exhaust ports through the walls of said cylinder
and channel below said valve seat, a port in said 15
sleeve valve adapted to alternately register with
said intake and exhaust ports and means for ro
tating said ring gear.
2. In combination with an internal combus
tion engine, a rotating sleeve valve mounted in
an annular channel surrounding the upper end
of the engine cylinder in concentric relation
thereto, a valve seat formed in the upper
portion of said channel comprising opposed
shoulders in the side walls thereof, corresponding
shoulders on the opposed sides of said sleeve
valve adapted to engage and rest upon said valve
seat, compression rings disposed between the
upper end of said valve sleeve and the cylinder
head for holding said valve sleeve in engage 3O
the sleeve comes into correspondence with the
intake port. By the time the bottom of the in
take stroke is reached the port is again closed and
the compression stroke commences and develops
into the power stroke during which time the
ment with its seat to establish a seal between the
upper end of said sleeve and channel, intake and
ports remain closed due to the relative positions
said intake and exhaust ports and means for ro
of the same and the co-related rotation of the
rotary valve or sleeve.
It is believed that the advantages and construc
4:0 tion of the ,device may be apparent from the fore
going paragraphs taken in conjunction with the
accompanying drawing, without further detailed
description.
' While the preferred embodiment of the inven
tion has been disclosed it is understood that
minor changes in the construction and arrange
ment of co-operating parts may be resorted to
within the scope of what is claimed without de~
parting from the spirit of the invention.
I claim:-—
1. In combination with an internal combustion
engine, a rotating sleeve valve mounted in an an
nular channel surrounding the upper end of the
engine cylinder in concentric relation thereto, a
10
centric relation thereto adapted to seat in an
exhaust ports through the walls of said cylinder
and channel below said valve seat, a port in said
sleeve valve adapted to alternately register with
tating said sleeve valve.
3. In combination with an internal combustion
engine, a rotating sleeve valve mounted in an
annular channel surrounding the upper end of the 40
engine cylinder in concentric relation thereto,
intake and exhaust ports in the walls of said
cylinder and channel, a port in said sleeve valve
adapted to alternately register with said intake
and exhaust ports, a valve seat formed in said
channel above said ports comprising opposed
shoulders in the side walls of the channel, corre
sponding shoulders on opposite sides of said
sleeve valve adapted to engage and rest upon
said valve seat to establish a seal between the 50
upper end of the valve sleeve and channel and
means for rotating said sleeve valve.
JAMES D. CAMERON.
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