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Патент USA US2412261

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DMn 1o, 1946.
'
c. w. HALL
2,412,261
ROTARY VALVE
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Filed March ZDV .1.945
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CHAR/.fs I4( HALL.
BY
2,412,261y
vPatented Dec. 10, 1946
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>UNITED STATES PATENT oFFicE
2,412,261
« ROTARY VALVE
i Charles W. Hall, Denver, Colo., assignor to
y Malcolm S. Losey, Denver, Colo.
Application March 20, 1945, Serial No. 583,804 `
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5 Claims.
(Cl. 12'3-190)
1
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2
by means of which rotation is imparted to the
valve I6.
This invention relates to a rotary valve for in
ternal combustion engines, and has for its Drin
_ cipal object the provision of a valve of this char
The valve I6 contains an exhaust tube 2I ex.
' is designed for simplicity, economy, and eiiiciency.
These will become more apparent from the fol
the cap 12v/hen it is in alignment` with the port
22. The exhaust tube 2| is in constant communi
cation with an exhaust _passage 25 through the
tending concentrically through the plate I‘I from
acter through which cooling air can> be circulated
for maintaining the valve at the proper operating 5 an eccentric position through the bottom of the
valve I6. The lower extremity of the tube 2| is
temperature.
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positioned to register with a cylinder port 22
Another object of the invention isto provide
communicating with the cylinderl I4 once in' each
a sealing device for a valve of this character
revolution of the valve I6.
which Will rotate with the valve so as to prevent
The valve I6 is also provided with an intake.
the wearing of grooves in the valve surface and
tube 23 extending from an eccentric 'position
to properly lubricate the same.
‘
through the plate '|1. The tube 23 is so posi
Another object is to 'so construct the valve that
tionedA that it will also align with the cylinder
it will accommodate thermal expansion without
port 22 once in each revolution.
affecting the running and sealing qualities of the
The upper'extremity of the tube 23 simultane
valve. Other objects and advantages reside in 15
ously aligns-with an intake passage 24 through
the detail construction of the invention. which
lowing> description.
`
In the following detailed description of the in 20
vention, reference is had to the accompanying
cap
I2.
v
Y
,
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It can be readily> seengthat the tube 23 will align
Like nu
with' the cylinder port.V lduring the intake- cycle
merals refer to like parts in all views of the draw
ing and throughout the description.
of the cylinder I4, and "that the bottom'of the
valve I6 will close the port 22 during the com
drawing which forms a part hereof.
In the drawing:
\
25
Fig. 1 is a vertical section through the head of.
pression and explosion cycles. The exhaust’tube
2|~ will then align withv the port 22 to exhaust
a typical combustion engine cylinder, illustrating
the gases through the passage 25 Vduring the ex- '
one form oi' the improved valve ’in place thereon:
Fig. 2- is a cross-section through the valve of 3
haust cycle.
It ‘has been found that in the usual rotary valve
Fig. 1, taken on the line 2-2, Fig. 1; '
Fig. 3 is a vertical section through an alternate
form of the valve, embodying the same basic prin
ciples;
Fig. 4 is a cross-section through the-form of
0 the incoming gases are so expanded by pre-heat
ing in passing through the hot rotary valve that
the ei'liciency ofthe motor is diminished. In this
invention, however, means are provided for cool
ing the rotary valve. This is accomplished by-
35 placing a plurality of oppositely positioned air
Fig. 3, taken on the line 4-4, Fig. 3;
.
ports 26 in the side or 'skirt of the valve. These
Fig. 5 is a similar section taken on the line
ports align with an air intake passage 21'and an
5-5, Fig. 3: and
,
Fig. 6 is a detail view partially in section, illus
tratingA the improved valve provided with a seal
air discharge passage 28 positioned in the oppo
site sides of the block I0. This allows> cooling air
40 to be continually forced through the valve dur
'
ing its operation to remove the heat from the
In Figs. 1 and 2 a typical engine cylinder block
valve and from the gas tubes 2I and 23. Acoolinsr
is indicated at I0 provided with the usual water
liquid could be substituted for the coolingl air
jacket space II. 'I’he block I0 is closed by means
of a cylinder cap I2, which may also be provided
if desired.
_
.
Two sealing rings 29 completely surround the
with water jacket space I3. '_I‘he block IIJ is pro 45
valve I6 above and below the air ports 21 and 28
vided with any desired number of operating cylin
to seal off air leakage‘around the valve. The
ders, one of which is indicated at I4, having a
cylinder head I 5.
'
plate I1 is provided with a thrust bearing 30 in
A cylindrical valve bore is formed in the block
its upper surface for absorbing the upthrust of
I0 above the'cylinder head I5 to receive a cup 50 the valve.
‘
ing skirt.
shaped rotary valve I6. A circular valve plate I1
'
Alternate form
rests upon the edge of the open extremity ofthe
In Figs. 3, 4, and 5 an alternate form of the in- "
valve I6, and is provided with peripheral gear
vention embodying the same principles of oper
teeth I8 which mesh with a drive pinion I9. 'I‘he
drive pinion I9 is mounted on a valve shaft 20 55 ation is illustrated. In this form a hollow-cup
.85412526 l.
4
,3
_e
shaped rotary valve 3| is mounted in a cylindrical
vvalve vhousing 32. A‘cylinder passage 33 cornmunicates from aneccentric position in the bot
tom of the valve housing with any desired oper
.slightly spaced away as it approaches the closed
,
extremity.
Y
'I'he lower- portion ofthe skirt is split as shown
-at y54, to allowthis lower .extremity `to .ilexrin
lwardly-when >the valve is forced .within its seat.
ating cylinder of an internal combustionengine. 1
The valve -3| is provided with a curved ex
.haust .tube 34 and a straight intake Vtube 35,
The natural tendency of `the skirt is to expand,
`and this maintains a tight 4sealing contact with
bothof which communicate through the bottom e
`the walls of the valve cavity so as to seal >any
of the valve r3| eccentrically of the vaxis thereof'
port openings therein.
`so as‘to align ywith the cylinder passage 33 at 10
'I'he form of Fig'. V3 .may be provided“ with a
predetermined times.
vsealing plate 56 across the top havinga‘ central
'I'he upper ’extremity Yof the intake. passage 35
ysimultaneously aligns with an intake passage 36
formed in a valve-head 31 covering the valve 3|.
opening for alignment with the nozzle 42 Vand
with_a kside opening through which the intake
tube passes. It is preferred to form the plate 56
The exhaust tube 34 exitsy through the wall of 15 with a slightly conical top surface as illustrated.
the valve V3| to align with an exhaust passage 38 ‘
This conical surface fits against a> conical de
. simultaneously with its alignment with Ythe
pression in the lower surface of the valve Yhead
. cylinder `passage 33. `The valve is rotated from
31 to form a perfect, self-centering seal vin the
a valve shaft 39 which is :splined concentrically
'
latter.
. vinto the bottom of the valve 3|, as shown at 40. .20
While a speciñc form of the yimprovement has
.It can be seenthat, if the valve 3| is rotated
at one-half crank-shaft speed, it will connect
>
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Í
been described andillustratedherein, it is de
sired to be understood that thesame- may he
the cylinder passage y33 with the intake passage
varied, within .the scope of the appended claims,
3B during the intake-cycle,‘thence close the cylin
without departing from the spirit of the invention.
der passage 33 for the compression and explosion 25
v`Having »thus .described the invention, what -is
cycles. It Will then connect the cylinder passage
claimed and desired secured by Letters Patent is:
. 33 through the tube 34 with the exhaust 38.
1. In a rotary valve of thehollow cylindrical Y
Provision is made for aircooling this valve by
placing an air passage 4| in. the head 31, which
type, 'means for lubricating one endrof said valve
comprising: a rotary button; gear teeth around .
t terminates in a nozzle 42 extending downwardly 30 said button; a ltoothed pinion axially mounted
into the valve 3| to direct incoming air toward
on said valve in mesh with said teeth so that said
the bottom thereof.
The air exits through air
button will rotate simultaneously with said valve;
f outlet opening 43. The opening 43 .communi
oil passages in said button; and means for sup
cates with a circumferentialV air channel 44:
plying oil to said passages.
which ysurrounds the valve 3|, there being Vair
.2. In a rotary valve of the cylindrical type
having ancylinder port opening to one extremity
of said valve, means for sealing said port tos'aid
35
` openings -45 through the wall of the valve com
municating with the channel.
' It can be readily seen that cooling air can be
.
"forced into the valve through the channel 4|.
'valve comprising: a rotary ring around said port;
teeth surrounding said ring;` a pinion axially
` illling the 'hollow interior'thereof, and that the
mounted on said valve in mesh with said. teeth ,
heated air will flow through the openings 45 into
so that said ring will rotate with said valve in a
` the channel 44 and thence exit through the'air
direction opposite thereto.
Y
l outlet kopening l43.
Thisiform is »provided Vwith a rotary oiling
ring gear 46 having vgear teeth on its peripheral
type, means for lubricating one end of said valve
`edge, meshing with a drive pinion 41 on the
vsaid button; a toothed pinion axially >«mounted on
3. In a' rotary valveof the hollow cylindrical
comprising: a rotary button; gear teeth 'around '
valve shaft 39. The gear 451s provided with oil
discharge openings 55 which spread lubricant
over the bottom face »of the valve. Thering
saidvalve in mesh with said teeth so that said ' '
button will rotate simultaneously'with said valve;
-oilpassages in said» button; "means for` supplying
gear is journalled on -a stud 48‘ having oil pas 50 oil to said‘passagesi a cylinder port opening to
sages to whichv oil is- fed from an oil channel
49. The .block is so arranged that the oil open
igns 55 do not open to the oil channels in' the
stud’48 during the intake stroke of the motor
one extremity\cf said valve; means for sealing
` said port ton said valve; a rotary ring >around said l
port; teeth surrounding said ring; a pinion axially
mounted on said valve in mesh with said teeth
Y so'that -said vring will rotate lwith said valve in a
so as to prevent A. oil from being drawn in by i
vacuum.
Y
.
direction opposite thereto.
>This .form is also provided "with a rotary seal
' ’~
4. »In a rotary valve of the hollow cylindrical
type, means for lubricating one end of said valve
comprising: a rotary button; gear teeth around>
ysaid button; a toothed pinion axially mounted
on said valve in `mesh with said teeth sp that said
ing ring 5|) between the cylinder passage .33 and ‘the bottom vof the valve. The sealing "ring is
¿formed with peripheral >gear teeth 5| which mesh
Vwith the teeth of the "pinion 41 so that the ring
will :constantly rotate during operation of the
valve, so as to spread lubricant and to prevent
cutting rings in the bottom of the valve. The
button will rotate simultaneously with said valve;
oil passages‘in said button; means for supplying
oiling block 46 .and the ring 5|r may be forced 65 oil to said passages; a cylinder ‘port opening to
‘one extremity of said valve; means for sealing
Vagainst .the bottom surface -of the valve by any
desired resilient means.
'
In Fig. v6,V an alternate method of sealing the
¿external surface of a rotary valve to its periph
‘ said port to said valve; a rotary ring around saidV
i port; -teeth surrounding said ring; a pinion axially
` mounted on said valve in mesh'with said teeth so
b `eral gas and air ports vis illustrated. In this .form
-that said ring will rotate with sa'id valve in a.
>a rotary valve 52 of the open top, cup-shaped
form -is surrounded by a sealing skirt 53. The
forcing said -button Vand said ring against said
skirt :is 'snugly and permanently shrunk onto and '
direction opposite thereto; resilientg'means for
v
valve.
around the open lextremity of the valve andde
5. A rotary valve comprising: amhollow cup
pends toward the closed extremity thereof but is 75 shaped valve memberV rotatably mounted in a
2,419,901
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chamber of corresponding shape; a cylinder port .
communicating with one extremity of said valve
chamber eccentrically of the axis thereof; a ñrst
straight tubular passage communicating through
the bottom of said valve at a point to periodicallyr
align with said cylinder porty and extendinß
through said valve parallel to the axis thereof;
a second tubular passage communicating through
the bottom of said valve at a point to periodically
align with said cylinder >pori'. and extending
through the cylindrical aide wall of said valve;
a head enclosing said valve, said head having 'an
opening inthe path of rotation of said iirst tubu
lar passage, there being a second opening in the
cylindrical side of said chamber in the path of
rotation o! said second tubular passage; an air
discharge nozzle discharging axially -into the open
top of said valve; and air discharge openings
through the cylindrical wall ot said valve and' its
chamber to allow air to be circulated through the`
l0 former.
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cnammwnam
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