close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2134236

код для вставки
Oct. 25, 1938.
A. |_. REEVES
_ 2,134,236
INTERNAL COMBUSTION ENGINE
Filed April 25, 1936
fHi
2 Sheets-Sheet 1
Oct'. 25, 1938.
A. |_. REEVES
v
2
,134,236
INTERNAL COMBUSTION ENGINE
Filed April 23, ' 1936
.2 Sheets-Sheet 2
r
/NVENTOR
AL. Q55 v50
BY
,II
2,134,235
Patented Oct. 25, 1938
UNITED‘ STATES PATENT OFF-lea
2,134,2st
‘INTERNAL COMBUSTION ENGINE
Arthur “L. Reeves, Caron, Saskatchewan, Canada .
Application April 23, 1936, Serial No; 76,053
1' Claim. (01. 123-79)
Fig. 7 is a fragmentary vertical section taken
My invention relates to internal combustion
.engines and an object of the invention is to pro
vide a device of the character herein described
in which is used a single master valve in each
cylinder together with a sliding sleeve surround
ing the piston to open and close the exhaust and
intake ports of the cylinder.
‘
'i A further object of my invention is to provide
a'device of the character herein described ‘hav
ing a single mushroom valve requiring only‘ a
very small travel to open sumciently to allow the ‘
free passage of gases and thereby reduces the
hammering of valves, cams and rocker arms en
countered in the conventional type of engine.
A further object of my invention is to provide
a device of the character herein described which
reduces the amount of power taken from the
crank shaft by the valves by using only onevalve
instead of two as‘ in the usual type of internal
combustion
engine.
'
‘
-
A further object‘of my invention is to provide
a device of the character herein described in
which the side ports are isolated during the ?ring
stroke.
25
~
I
A further object of my invention‘ is to provide
a- device of the character herein described having
a single master valve around which pass both the
hot exhaust gases and the cool‘ intake gases,
the valve thereby warming and aiding vaporiza
30 tion of'the intake gases and cooling to some ex
tent the exhaust gases.
A still further object of my invention is topro
vide a device 'of the character herein described
which is simple to construct and will not easily
35 become out of order.
‘
With the above more important objects in
View and such other minor objects as may appear
as the speci?cation proceeds, my invention con
sists essentially in the arrangement and construc
40 tion of parts all as hereinafter more particular
ly described, reference being had to the accom
panying drawings, in which_
i
Fig. 1 illustrates a vertical central sectionvof
my invention with the rocker arm. shown in full.
45
Fig. 2 shows 'a vertical section of a furtherem
>
"
Fig. 8 is a detail view of the method used for '
attaching the reciprocating arm for rotating’ the
sleeve used with the'embodiment of my invention ,;
illustrated in FigureB.
7
~
7
In‘the drawings like characters of reference in
_dicate corresponding parts in the di?erent ?g¢
ures.
‘
'
My invention consists of a’ housing I composed .10
of a lower outwardly bulging crank case 2 which
converges to a vertically disposed cylinder casing
3. The cylinder casing, it will be noted, has dou
ble walls, an inner wall 4 and an outer wall 4'
with passageways. 5therebetween. ,These pas .15
sageways are for the purpose of providing a water
jacket around the central cylinder formed by
the inner wall
4.
_
I
,
7
_
'
Upon the upper annular surface 6 of the cyl-‘
inder casing is placed a gasket 1 and surmount- '1
ed. thereon is the cylinder head 8 having a con- I
?guration as’ shown in the drawings accompany
ing this application. This cylinder head is also
double walled and passageways 9 are provided
25
therein to receive ‘water for cooling purposes.
The cylinder head 8, it will be noted, extends
well into the cylinder formed by the inner walls
of the cylinder’ casing 4 but has a diameter'some
what smaller‘than the internal diameter of the 30
cylinder formed by the walls 4 thus leaving a
space H] between the cylinderhead and the'walls
4 for a purpose later to be explained.
I
i
Centrallyv disposed within the lower ‘end of the
cylinder head is a valve seating “leading up
3.5
wardly into a chamber I2 thereabove from which ~1
extends a laterally and upwardly extendingdi
verging passageway l3 to the side of the cylinder
head.
‘
p
' A vertically extending ori?ce I4 is passed 40
through the center of the cylinder head and a
bushing l5 having an upper ?ange i6 is inserted
therein.v Through the center of the bushing ex
tends a valve stem H to the lower end of which
is attached a large mushroom’ valve l8 designed
bodiment of my invention. taken. on the-line 2-2
to engage with the seating‘ H on‘ the under side '
of Figure 5.
of the cylinder head.’
~
Fig. 3 shows a still further embodiment of my
invention taken on the line 3—3 of' Figure 4..
50
on the line 'l-1~ of Figure 5;
_
The upper end of the valve stem I1 is threaded
and a nut I9 having an outwardly extending
N Fig. 6 illustrates a plan‘view of the embodi
?ange 20 is threadablyattached thereto. Inter 50
posed between the ?anges It on the bushing I5 "
and'the ?anges‘ 20 is aic'ompressed helical spring
2i which tends to keep‘ the valve l8 in engage-‘
ment with the seating ll. Adjustment of the
ment shown in Figure 1.
pressure exerted by thejspringjmay be accom
Fig. 4 illustrates a horizontal section taken on
the line 4—4 of Figure 3.
_
Fig. 5 illustrates. a horizontal section taken
on .the line 5-_—5 of Figure._2.
_
'
’
p.15
2
2,184,236
plished by changing the position of the nut l9
upon the threaded portion of the valve stem.
surmounted upon the upper surface of the
Valve head are standards 22 which carry a hori
and exhaust ports, the lower passageway 55
being the exhaust port and the upper passage
way 56 the intake port.
Passing through the sleeve 40 and in align
ment with the passageway 55 when the sleeve
zontally disposed shaft 23 upon which is piv
40 is at its lowest position, is an ori?ce 51. This
otally mounted a rocker arm 24 obliquely dis
posed with relation to the shaft 23. One end of ori?ce, it should be noted, opens into the pas
the rocker arm is formed into a head 25, the sageway I3 at all times during the movement
lower surface 26 of whichvis designed to bear of the sleeve 40 but the camv 48 is designed to
10 against the upper end of the valve stem II. The move the ori?ce 51 into alignment with the 10
opposite end of the rocker arm is provided with ‘passageway 56 when the sleeve is in its upper
a threaded ori?ce 21 therethrough and a threaded . _
shank 28 is passed into the ori?ce. The upper
end of this shank is furnished with a diametri
15 cally located groove 29 foruthe reception of a
screwdriver and the lower vend thereof is spheri
cally formed as at 30 to form 'a ball for a ball
20
and socket joint. In order that the shank 28
may be maintained in any position desired,
locking nut 3| is also provided.
<
~ g
7.
~
Within the gear casing2 is furnished'a hori
zontally disposed cam shaft 32._upon which is
located a cam 33having a con?guration as best
illustrated in Figure 9. Apush rod 34 extends
25 between the cam 33 and the spherical head 36
of the'shank 26 and is provided at its lower end
with a tappet in the form of a roller 35 main
tained in position by a pin 36 passing through
30
the bifurcated lower end of the rod.
To the top end of the rod is a?ixed a head 31
with an upwardly openingv socket 38 therein hav
ing a semispherical lower surface 39 to receive
the spherical head 30 on the shank’ 28. This head
is
‘maintained in contact with the socket and the
35 roller
35 in engagement with the cam 33 by
means of the spring 2| upon the shank l1;
It should here be mentioned that the cam
shaft 32 is geared to the crank shaft of the en
gine in the usual manner, and is designed’ to
40
rotate at one half the speed of the crank shaft.
Within the cylinder formed by the walls 4 is
inserted- a snugly ?tting cylindricalsleeve .40.
position.
.
“ Diametrically opposed to the ports 55 and 56
is a threaded ori?ce 58 to receive the conven
tional type of spark plug 59 therein and an ori; 15
?ce 60 is provided within the sleeve 40 and is
designed to come into alignment with the spark
when the spark plug is ?red as will be presently
explained:
The operation ofthis device is as follows._ ‘In 20
the position shown, the sleeve 40 and the piston
52 are at their lowest points and the enginev is
ready to commence the exhaust stroke. ‘ It
should here be mentioned that as the cam shaft
32 rotates at only half the speed of the crank 25
shaft, the piston slides within the sleeve 40 and
the sleeve within the walls 4. Immediately prior
to the piston advancing upwardly, the push rod
34 is raised which opens the valve I8 and thereby
allows the gases within the chamber formed by‘ 30
the piston head and sleeve 40 to be expelled
through the passageway l3 and through "the
exhaust port 55.
‘
During the upward movement of the piston,
the sleeve 40 is also rising and when the piston 35
reaches its highest point, the ori?ce 51 moves out
of alignment with the port 55 and therefore
closes the exhaust port. As the piston now moves
downwardly, the sleeve continues to rise and
comes into engagement with the intake port 56.
The valve I8 is maintained open _by_the caml33
and therefore fuel is sucked in through the pas‘
sageway l3 and into‘ the cylinder.
The upper end of this sleeve is received into the
When the piston again reaches its lowest point‘,
‘ space l0 between the cylinder head. and the walls
the sleeve will be at its highest point and in this
position, the valve [8 closes. The piston now
rises forrthe compression stroke and the sleeve
45 4 and encircling the spherical portion of the head
are furnished piston rings/Hand similar rings
Immediately
after the compression stroke is completed, the ori
?ce 60 being in alignment with the spark plug 50
at this time, the spark plug ?res and ‘the resulting
outer end of which i is formed van internally
explosion causes the piston and sleeve‘to move to
threaded vertically disposed ori?ce 44. ~ A second.
tappet 45-, is threaded into this ori?ce and is
55 maintained in position therein by'a lock nut 46.
A roller 41 is provided within'the bifurcated end
of the tappet and engages with a cam or eccen
tric 48 also mounted upon the cam shaft 32.
Within the upper part of the crank case 2 and.
‘so
commences to move downwardly.
42 are placed around the outer surface of the
cylinder 40 to engage with the walls 4.
Integral with the lower end of the cylinder 40
is provided a laterally extending arm 43 in the
in alignment with the longitudinal axis of the
tappet 45 is a tapped ori?ce “into which is
placed a bolt 50 which protrudes slightly past
the lower surface of the crank case. Interposed
between the crank case and the arm 43 and en
65 circling the protruding ends of the bolt 50 and
the tappet 45 is a compressed helical spring 5|
which tends to maintain the roller 41 inengage
ment at all times with the cam 48.
7
the positions ‘shown and the cycle‘ is again re
peated.
‘
In the second embodiment of my invention 11- 55
lustrated in Figures 2, 5 and 7 of the drawings
accompanying this application, I provide an out
wardly bulging crank casing 6i whichconverges
and extends upwardly into a cylinder casing 62
composed of an inner wall 63 and an outer wall
63'. The location of these walls provides pas
sageways 64 therebetween which are for the 'pur;
pose of providing a water jacket ‘around the cen
tral cylindrical walls 63 as in my ?rst embodi- r
ment.
.
_
.
Upon the upper horizontal surface 65 of - the
cylinder walls is a gasket 66 and surmounted
thereupon, I provide my cylinder head 61, This
cylinder head is also double walled in order‘to
Within the sleeve 40~is inserted the usual type
of piston 52 and protruding from the‘lower end allow water to be circulatedvtherein and has a 70
thereof is‘ the conventional connecting rod 53 ' cylindrical portion 68 Whichextends downward
pivotally attached to the‘piston by the wrist pin ly into the cylinder formed by the walls__63 which
is of smaller diameter than the cylinder to leave
Extending through‘ the cylinder walls 4 and 4' a space 68’ between vthe. cylinder and the por- ._..
‘
75 are a pair of passageways to be used as intake tion 68.
54.
_
‘
.
'
3
Eccentrically disposed within the cylinderhead
and extending vertically therethrough is fur
nished a bushing 69 having. a ?ange 69’ adjacent
the-upper end thereof, this?ange seating against
the upper surface of the head 61-. A valve stem
‘I0 provided with a collar ‘II threadably attached
to the upper end thereof and a mushroom valve 1-2
at the lower end thereof is passed through the
bushing.
10
A spring ‘I2 identical to the ‘one usedin the ?rst
embodiment of my invention is interposed be
tween the ?ange 69 upon the bushing and the
This- embodiment of my invention Loperates'in
thefollowing manner.‘
'7
1
l -~
‘
v
> '
In the position- shown, the piston 94 and; the
sleeve 84' are‘ at their ‘lowest points of travel; 'Im-' .
medi'ately- prior to upward» movement ' of the
piston, the valve ‘I2 opens and‘ asthe piston com
mences to rise, the sleeve moves upwardly also.
This is the exhaust stroke when gases are
forced through the passageway 19, the aperture
92 and the port 8I.' When the piston reaches its
highest point, the exhaust port is just'cut off by
means of the sleeve and ‘the aperture 93d-commen
collar ‘II. The valve actuating mechanism,
namely, the rocker arm ‘I3, bush rod ‘I4, follower
ces to come into alignment between the passage‘
Way 80‘ and the inlet port 88. - Thus, on the ‘?rst
‘I5 and cam ‘I6 upon the cam shaft '11, are all
downward stroke of the piston,‘ fuel is sucked in
through the port #2V and passageway 80‘ into- the
identical to the valve actuating mechanism used
in the ?rst embodiment of my invention.
Within the lower portion of the cylinder head
61 is provided a valve seating "I8 to receive the
valve ‘I2. This seating extends upwardly and
branches into two passageways ‘I9 and 80. These
passageways, it should be noted, extend upwardly
and outwardly and have an obtuse angle between
their center lines so that upon reaching the side
Walls of the cylinder head, the outer ori?ces of
the passageways are diametrically opposed. In
alignment with the outer openings at the pas
sageways “I9 and 80 within the cylinder head are
provided exhaust and inlet ports 8| and 82 re
spectively which pass through the cylinder walls
63 and 63’.
Adjacent the valve ‘I2 within the cylinder head,
is a socket 83 from thelo-wer end of which extends
a downwardly threaded ori?ce 84 designed to
receive the usual type of spark plug 85’, the
sparking tips 86' of which are adjacent the lower
end of the ori?ce 84.
Within the cylinder formed by the walls 63
of the cylinder casing, I provide a snugly ?tting
cylindrical sleeve 85, the upper end of which is
designed to be received within the space 68" be
tween the cylinder head and the wall 63.
A laterally projecting lug 86 is made integral
with the lower portion of the sleeve 85 and is
provided with a bifurcated end 81.
Immediately below the end 81 of the lug 86
is attached an eccentric 88 upon the cam shaft
11. A split collar 89 encircles the eccentric and
an arm 90 attached thereto extends upwardly to
50 be received within the bifurcated end 81 of the
lug 86 and is pivotally attached thereto by means
of a pin 9| passing through the ends 81 and also
through the upper end of the arm 90.
It will now be evident that rotation of the crank
shaft ‘I’! will cause a vertical reciprocating mo
tion of the sleeve to occur.
Near the upper end of the sleeve 85 and di
ametrically opposed therein are two apertures 92
and 93. In the position of the sleeve shown in
Figure 2, the aperture 82 is in alignment with the
upper end of the passageway ‘I9 and also with
the exhaust port 8| so as to provide a continuous
passageway therethrough. When the sleeve
moves to its extreme upper position, the aperture
65 93 becomes in alignment with the outer end of
the passageway 80 and the inlet port 82 but in
this position, the aperture 92 will have moved
upwardly to close the exhaust port 8|.
A piston 94 of the conventional type is’ inserted
70 within the sleeve 85 and is pivotally attached by
the connecting rod 95 to the usual crank shaft.
It should here be notedthat in this embodiment
also, the cam shaft is geared to the crank shaft
and is designed to rotate at one half the speed of
75 the crank shaft.
cylinder. ' As the piston again commences to rise,
the valve "I2 closes and the gases ‘within the cylin
derare compressed therein.‘ Shortly after a sec
ond' downward travel of the piston has com
menced, the spark plug 85' fires and" the piston
is forced to its lowest position where it is again ,
ready for the exhaust stroke and the cycle is thus
repeated.
’
r
'
,
'
~
In the third embodiment of my invention illus 25
trated in Figures 3‘, 4 and 7, I utilize the same
type of crank case 96- as in the 'former embodi
ments upon which is‘ mounted theusual inner
cylinder 9'! and outer‘ cylinder‘ilfl’ between which
is the water jacket 98. " The usual gasket 99' is 30
placed upon the top‘ of" the cylinders and the
cylinder head I 00 is surmounted thereon. ' This
cylinder head is also provided-with passageways
IOI therein for the circulation’of water for cool
ing purposes, A circular recess I02 is eccentri 85
cally located within the upper end ofthe cylinder
head from the lower end of whichv extends a ver
tical ori?ce I03.) Awbushing- IM’having a ?ange
I05 is inserted within‘ this ori?ce; 'A valve stem
I06 is passed throughthis bushing and is pro
vided at its lower end with the usual large'mush
room valve .I0'I. ‘The-actuating mechanism for
this valve is identical with that described in the,
?rst two embodiments and it is therefore not
_ necessary to further describe ‘this, portion of the
invention.
A valve seating I08 isprovided in the lower end
of the cylinder head to receive the valve I07 and
extends upwardly into a passageway I09 which
?ares outwardly as best illustrated in Figure4 to 50
provide a wide mouth IIO. Adjacent the valve
Within the cylinder head is located a spark plug
in a manner identical to that described in the
second embodiment of my invention and shown
most clearly in Figure '7.
55
Within the cylinder 91, I provide a vertically
disposed ‘sleeve III, to the lower end of which is
pivoted an arm IIZ. This arm extends between
the cylinder and one leg of a bell crank I I3 which
is rotatably mounted upon a shaft II4 affixed to 00
the crank case walls. The lower leg of the bell
crank is made to bear against an eccentric cam
I I5 mounted upon the cam shaft I I 6 by means of
a tensile helical spring I I‘! extending between the
bell crank and the crank case.
' 65
A detailed view of the type of bearing used at
either end of the arm H2 is illustrated in Fig
ure 8. Into the sleeve or bell crank whichever
the case may be, is screwed a short stub‘ shaft,
II8 which is also threaded at its outer end to 70' I
receive a nut II8. It will be noted that a cross
sectional view of the bearing surfaces I20 of the
arm I2 are of a convex con?guration.
This
design is to allow a small amount of side play
which will occur when the arm H2 is in motion.
4
2,134,236
, Instead of utilizing. a vertical reciprocating mo
tion of the sleeve in‘this embodiment, I have
designed a means whereby the ‘sleeve may be
rotated upon its longitudinal axis as will be evi
dent from the above description of the bell crank
and associated mechanism.
At the upper end of the cylinder is located a
rectangular aperture I 2I having its longer axis
disposed in a vertical plane which is designed
10 upon an oscillated motion of 'the sleeve III to
move backwardly and forwardly between the side
limits of the passageway I09 and thus to come
successively into alignment with the exhaust and
inlet ports I22 and I23 respectively which pass
15 through the walls of the cylinder.
. This embodiment of my invention operates as
follows. In the position indicated, the piston is
at its lowest position and the passageway I09
opens through the aperture I2I into the exhaust
port I22. Upon the piston moving upwardly, the
sleeve III will commence to rotate and close the
port I22 when the piston reaches its highest posi
tion. During this operation, the valve III‘! has
been opened in a manner similar to that described
in the former embodiments.
'
As the piston now commences its ?rst down
ward movement, the aperture I2I- comes into
alignment with the intake port I23 and fuel is
sucked into the cylinder III. The valve III'I now
80 closes and the compression stroke commences.
Immediately after the completion of this stroke,
the spark plug ?res and the working stroke takes
place whereupon the piston returns to the posi
tion’ indicated in Figure 3 for which the cycle is
again repeated.
'
From the foregoing, it will now be evident that
I have provided an extremely simple and ingen
ious type of internal combustion engine which
has the advantage of using only one valve for
both intake and exhaust ports and thereby re
duces the troubles encountered through the use of
valves and also the noise produced thereby. The
single valve also aids in vaporizing the fuel taken‘
into the cylinder and in cooling the exhaust
gases expelled from the engine.
Since various modi?cations can be made inlthe
above invention, and many apparently widely
di?erent embodiments of same, made within the
scope ofthe claims without departing from the
spirit and scope thereof, it is intended that all
matter contained in the accompanying speci?ca<
tion shall be interpreted as illustrative only and 10
not in a limiting sense and I desire only such
limitations placed thereon as are speci?cally
expressed in the accompanying claim.
What I claim as my invention is:
Improvements in internal combustion engines 15
comprising an engine cylinder, a cylindrical
sleeve slidably mounted within said cylinder, a
spark plug communicable with the interior of
said sleeve, a cylinder head mounted upon said
cylinder, a portion thereof being designed. to 20
depend into said cylinder, said depending por
tion being spaced from said cylinder to ‘permit
the passage of said sleeve between said dependent
portion and said cylinder, a valve operating shaft
operated in timed relation with themain crank 25
shaft of the engine, a poppet valve in said cylin
der head, a gas inlet and exhaust passageway
extending from the periphery of said depending
portion and opening against said sleeve valve,
said cylinder being provided with intake and 30
exhaust ports therein in alignment with the outer
end of the inlet and exhaust passageway, said
sleeve being provided with an aperture therein
designed to move into alignment between said
inlet .port and passageway or said exhaust port 35
and passageway during said selected intervals in
the cycle of said engine, said sleeve valve being
actuated by an eccentric upon said valve operat
ing shaft, said poppet valve being actuated
through a push rod and a rocker arm, by a cam 40
also upon'said valve operating shaft.
,
,
ARTHUR L. REEVES.
Документ
Категория
Без категории
Просмотров
0
Размер файла
762 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа