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Nov. 19, 1946.
c. w. HALL
Filed April 30, 1945
G77/:fuis >h4 HALL.
Patented Nov. 19, 1946
Charles W. Hall, Denver, €010., assigner to
Malcolm S. Losey, Denver, Colo.
Application April 3l), 1945, Serial No. 591,089
4 Claims.
This invention relates to an improvement in
rotary valves for internal combusti-on engines.
The principal object of this invention is to
provide means in combination with a rotary valve
whereby the opening and closing of the valve ports
will be accelerated.
Another object of the invention is to provide an
improved. means for mounting the valve whereby
(Cl. 12B-190)
the walls will be reduced and an
accurate oil-floated bearing will be provided.
Other objects and advantages reside in the de
tail construction of the invention, which is de
signed for simplicity, economy and eii‘iciency.
These will become more apparent from the folw
lowing description.
tion, it will bring the intake passage I5 into align
ment between the cylinder port I9 and the intake
port I3 to allow fuel to enter the Cylinder.
The valve seat I3 is closed by means of a head
member 20 Isecured Ito the engine by means of
suitable cap screws 2l. The head member 2Q
is in turn closed by means of a cap plate 22 held
in place thereon by means of cap screws23.
A conical guide boss 24 is formed on and sup
ported from the head member 2li and extends into
a conical seat in the head of the valve I4 to main
tain the latter in alignment with its axis and
out of frictional engagement with the walls of the
valve seat. The valve is rotated by means of a
In the following detailed description of the in
vention, reference is had to `the accompanying
hub sleeve 2S which extends,upwardlytherefrom
through the guide boss 2c terminating in any suit
able drive mechanism. As illustrated, the sleeve
drawing which forms a part hereof.
23 carries a driven gear 2i' which is driven from a
Like nu
drive gear 23 mounted on a valve drive shaft 29.
merals refer to like parts in all views of the draw»
The quick opening feature of the valve results
ing and throughout the description.
from the action of an oscillating plate ¿lil placed
In the drawing:
between the valve lll and the cylinder head El.
Fig. l is a cross section through the head of a
This plate is provided with an opening positioned
typical internal combustion engine cylinder illus
to normally align with the cylinder port I3 and
trating the improved valve in place therein;
Fig. 2 is a horizontal section, taken on the line 25 provided with an axially expansible sealing ring
3l having a ring opening 32. The plate 30 is
2_2, Fig. 1;
mounted on the extremity of a plate shaft 33 ex
Fig. 3 is a similar section, taken on the line
3_3, Fig. 1; and
tending upwardly through the valve I4 and its
sleeve 26 and terminating in an actuating lever
Fig. 4 is a diagrammatic View illustrating the
action of the quick opening feature of the inven 30 34. The actuating lever 34 is secured to the
shaft 33 in any'desired manner to prevent re1ation.
tive movement therebetween, such as being
In the drawing, a portion oi an internal com
mounted on a square extremity thereof by means
bustion engine cylinder is indicated at I0 with
of an attachment screw 35.
its cylinder head at I I. The cylinder may be sur
rounded by the usual cooling water jacket space 35 The free extremity of the lever 34 carries a cam
follower pin 33 which rides in a cam groove 3`I_
I2. A cup-shaped valve seat I3 is formed over
formed in a cam member 43. The cam member
the cylinder head l l to receive a cylindrical rotary
4B is mounted on the drive shaft 29. The cam
valve le. Suitable sealing rings 25 seal the valve
groove is provided with a “high point,” at one
I4 to its seat i3. The valve is provided with an
intake passage I5 communicating between a liat 40 side of its periphery so thatl the pin 361 will act
to reciprocate the lever 34 forwardly and back
bottom surface on the valve I4 and an intake
wardly once during each revolution of the drive
port I3 in the cylindrical wall of the seat I3. lt
gear 28 and twice during each revolution of the
is also provided with a suitable exhaust passage
driven gear 2l and the valve I4. The reciproca
I'I communicating at intervals through the bot
tom of the valve I4 and with an exhaust port 45 tion is so timed that when the exhaust passage I1
begins to travel over the cylinder port I9, as in
I8 in the cylindrical wall of the valve seat I3.
dicated by the arrow A in Fig. 4, the plate 33 will
The passages I5 and l? communicate through
the bottom of the valve ILI at 90° from each other
be rapidly rotated in a direction opposite to the
and at equal radial distances from the axis of the
rotation of the valve for a short distance, as in
valve so as to alternately align with a cylinder 50 dicated by the arrow B Fig; 4, so as to :instantly
port I9 opening through the cylinder head Il.
increase the area of the initial opening. It will
Thus, when the valve is in the position of Fig. l,
then move in the direction of the rotation of the
the cylinder l0 is in communication through the
valve back to its original position in alignment
exhaust passage I'I with the exhaust port I8.
with the cylinder port I9. This serves to pro
If the valve I4 is rotated 90° from the above posi 55 vide an instant, relatively-wide, opening between
opening between the passage and the por-t com
the port I9 and the exhaust passage I'I, as indi
prising an oscillating member positioned there
cated in Fig. 4, even though the passage has only
begun to uncover the cylinder port. The plate
between, said oscillating member having an open
ing communicating between said passage and said
will again oscillate after the valve has rotated
port and means for oscillating said member to
189°. This oscillation, however, has no eiîect
since the cylinder` port I9 is closed at that time.
:cause the latter opening to move over and open
said passage more rapidly than the movement
The latter oscillation can be avoided, of course,
by changing the gear ratios so that the drive shaft
of said passage over said port.
2Q rotates at the same speed as the valve.
2. The combination with a rotary valve hav
A similar quick opening action can be obtained 10Y ing a gas passage which periodically aligns with
on the intake passage I5, if desired, by placing an
a cylinder port, means for creating a more rapid
additional “high point” in the cam groove at the »
opening between the passage and lthe port com
proper point.
prising: a disc positioned between said passage
A compression spring 39 constantly urges the
and said port, .there being an opening in said disc
lever 34 upwardly to cause the plate 30 to be
communicating between said passage and said
pressed lto a sealing fit against the bottom of the
port; and means for oscillating said disc to move
valve. The sealing ring 3l is of a multiple type
said opening to open said port to said passage as
which expands vertically to seal the ring open
the latter approaches axial alignment with said
ing`32 lboth to the bottom of the valve and to the
head of the cylinder.
3. The combination with a rotary valve hav
The valve is hydraulically urged downwardly
ing a gas passage which periodically aligns with
by means of lubricating oil under pressure be
a cylinder port, means for creating a more'rapid
tween the conical guide member 24 and the con
opening between the passage and the port com
ical seat 44. This oil may be admitted through
prising: a disc positioned between said passage
the cap 22 through a feed nipple 38; then-ce flow
and said port, lthere being an opening in said disc
ing under pressure, through an axial oil passage
communicating between said passage and said
4I in the shaft 33, to outlets 42 at the bottom of
port; a shaft carrying said disc; an actuating arm
the conical seat 44. It thence urges the members
extending from said shaft; and an eccentric
24 and 44 apar-t as it flows upwardly to a re
member positioned to swing said actuating arm
stricted discharge 43. The oil passage 4i may 30 so as to cause said opening «to open said passage
be continued into the plate 30 as indicated at 44
in advance of Ithe alignment of said passage with
to provide lubrication under pressure to the bot- y
tom of the valve I4 and plate 30.
- While a speciñc form of the improvement has
said port.
4. In a rotary valve of the type adapted to be
positioned between an engine cylinder and its
been described and illustrated herein, it is de
head .and having passages which periodically
sired to be understood that the same may be
varied, within the scope of the appended claims, `
communicate -between a cylinder port and ex
haust and intake por-ts, means for mounting said
without departing from the spirit of the inven
Having thus described the invention, what is
claimed and desired secured Iby Letters Patent is:
i Valve- comprising; an inverted conical bearing
1. The combination with a rotary valve hav
ing a gas passage which periodically aligns with
a cylinder port, means for creatingv a more rapid
urging said valve with cavity upon said bearing
member extending from said head into a conical,
axially positioned bearing cavity- in said valve
and providing a bearing therefor; and means for
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