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Патент USA US2410096

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Oct. 29, l946.~
w. H. MclNTuRFF
Filed -July 20, 1942
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Öct. 29, 1946.
Filed July 2o, 1942 _
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wil/fam H. Mçmfmjf
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Patented Oct. 29, 1946
‘William H. McInturff, Warrington, Fla.
Application July 20, 1942, Serial No. 451,655
2 Claims.
(o1. 741-40)
(Granted under the act of March 3, 1883, as
amended April 30, 1928; 370 0. G. '757)
The invention described herein may be manu
factured and used by or for the Government for
the necessity of using the conventional camshaft
governmental purposes, without payment to me
of any royalty thereon.
This invention relates to internal combustion
engines, and the primary object thereof is to pro
Heretofore the pistons on internal combus
tion engines were caused to have only one work
ing and compression stroke for each revolution`
of the crankshaft, resulting in the use of the
maximum amount of fuel in running the engine.
vide an internal combustion engine of such con
struction that a minimum amount of fuel is con
sumed in obtaining the., maximum amount of
power therefrom.
on the engine.
' ,
It istherefore the aim and purpose of this in
vention to provide connecting means between the
10 crankshaft of an internal combustion engine and
Another object of ,the invention is to provide
means in connection with an internal combustion
engine whereby the pistons are given a plurality
of working and compression strokes in the cylin
ders for each revolution of the crankshaft, thus
the pistons for producing a plurality of working
and compression strokes in the cylinders for each
revolution >of the crankshaft, thus providing
more power on a lesser number of pistons and
cylinders resulting in a great saving of fuel for
running the engine.
producing more power on a lesser number of pis
tons and cylinders and resulting in the reduction
With the above and other objects and ad
vantages in View, the invention consists of cer
of the amount of fuel consumed by the engine.
tain features of construction and arrangement of
Another object of the invention is to provide
means for connecting the pistons of a multi 20 the several parts to be hereinafter fully described
and illustrated in the accompanying drawings in
cylinder internal combustion engine to a single
v which
crank on the crank shaft thereof in such a man
Fig. 1 is a transverse sectional elevation of the
ner as to impart a continuous rotary motion to
improved multi-cylinder internal combustion en
the shaft and to provide means for actuating the
respective intake valves of the cylinders by a 25 gine;
Fig. 2 is a longitudinal sectional elevation
single cam mounted on the main shaft and the
thereof taken on the line 2-2 of Fig. 1;
K respective exhaust valves of the cylinders by a
Fig. 3 is a diagrammatic representation of the
single cam also mounted on said crankshaft
single crank on the crankshaft being at the top
thereby eliminating the necessity of employing
chains, sprockets, gears and other such elements ,3.0 dead center and illustrating the elements com
prising the invention shown in operative posi
in actuating said valves.
tions for causing one of the pistons to have a
Another object of the invention is to provide
suction stroke in a cylinder while another of the
meansin connection with an internal combustion
pistons has an expansion or power stroke in an
engine'that a leverage on the pistons is provided
whereby an economy in power is eifected in com 35 other cylinder;
Fig. 4 is a diagrammatic representation of the
pressing the charge. '
crank on the crankshaft actuated 90°, with the
V Another object of the invention is to provide
elements shown in operative positions for causing
vconnecting means between a crankshaft and the
the pistons to have a compression and an exhaust
reciprocating pistons of an internal combustion
enginewhich will eliminate side thrust of the pis- , 40 stroke respectively;
-tons in the cylinders Vand will reduce the com'
monlyl called slap and push of the pistons to a
Fig. 5 is a diagrammatic representation of the
crank actuated 180° with the elements shown in
operative positions " for causing the pistons to
^ .Another object of the invention is to provide 45 have a power and suction stroke respectively;
Fig. 6 is adiagrammatic representation of the
connecting ‘means includingfa driving -rod be
tween asingle crank on the crankshaft and pis
ton`rods -for> the pistons of a multi-cylinder en
crank actuated 270° with the elements shown in
operative positions forl causing the pistons to
have an exhaust and compression stroke respec
gine whereby >fthe pistons are run in the cylin
v kdersrat doublethe speed of the crankshaft, there' 50n Fig. '7 is a horizontal sectional view taken on
j‘by insuring-_more steady power, also giving an ‘ " the line 1--1 of Fig. 1.
impulse at the upper and lower operative posi
. Referring more speciñcally to the drawings, the
tions of the single crank on the crankshaft which
ltends tobalance the torque for producing a more
improved internal combustion engine indicated
generally by A comprises a crankshaft l supported
-equal distribution of vibrations and eliminating
on Ibearings 2 on the upper ends of standards 3
which are suitably mounted on the base 4 of the
crank case or housing 5 of the engine. One end
cylinder b-lock 2G and the intake and exhaust
valves 3%’ and S3', respectively, of the cylinder
of the crankshaft i is supported in a bearing 5
and extends through one side of the crank case 5
for supmrting a ily wheel 1. A single crank S
having co-unterweights 9 thereon isprovided on
block til’ are of the usual construction employed
in engines of this kind, with the intake valves
Sil and 3Q’ being disposed on one side of the cyl
,inders v2i `and 2i' respectively, andthe exhaust
the crankshaft i intermediate its ends. The
lower end of a driving rod I6 is pivotally con-'
valves '33 and 35i' being disposed at'the opposite
side of the cylinders.
nected to the single crank 8 while its upper end
is pivotally connected to a guide element Il in
The intake valves 3@ and et’ for the cylinders
‘2i and 2i', respectively, are operated by means
the form of a pair of levers 3e and 35', pivot-ed
the form of a block member whichï’is slidably
mounted in a vertically extending guideway t2,
said guide elementl II being in turn pivota'lly
coupled to one end of one of each of ¿a :pair of
together by` a pin 3l mounted on a bracket 38
'suitably secured to the lower surface of the frame
i3. rThe pair of .levers 3o and 36' comprises arms
3‘3 and 39' and legs lill and ¿lû' which arms 39
and 39’ »extend in diametrically opposite direc
rods or links I3 and I3' of a toggle mechanism.
rThe other ends of the links I3 and I3' are pivot
. tions from each other from the pivot pin 3l' and
ally connected at I4 to theinner upper ends of
bea-r at their outer ends against the lower ends
a pair of -bell cranks or angleflevers l5 and I5’`
of the rods
and él’ that operate the intake
respectively, one of each of which bell cranks is
mounted on opposite sidesof the driving rod IG 20 valves Se and 3%', respectively, against the action
ci the springs £2, and the legs‘íiß vand ‘iii’ extend
and guideway i2. The bell cranks I5 ,and I5’ are
downwardly'fi’om the pivot pin 3l, with the lower
pivotaliy mounted at I5 and I6’ to'rock on a `pair
free ends «is and 43’ of the legs >being bent and
of brackets il and I ‘E’ respectively, _suitably
extending in opposed relatíon‘to >each other vfor
mounted on a supporting frame IB positioned
engaging with a single cam lill ñxedly mounted
within a casing i9 on the upper end. of which -the
'on the crankshaft l adjacent to ‘one side of the
cylinder blocks 2c and 2t' are mounted. The
cylinder 2i kof the .cylinder block’Ziiis provided
with a suitable piston 22 ’that is adapted to re
ciprocate therein, whichpiston 22 is connected to
yone end >of the piston rod 23, the opposite end of
said piston ’rod 23 loeingpivotally connected at
256» to the outer end of the bell crank i5. The
cylinder 2|’ of the cylinder block 2Q' is provided
with a piston 22' having one end of thepiston
rod 23' connected thereto,with the other end of
single crank 8.
The exhaust valves 33 vand 33' of :the icylinders
2l', respectively, are similarly operated ‘by
means in the form of ,a pair of levers fiiland 45’
pivoted together by a` pin 3l' `mounted on a
bracket 353’ suitably secured tothe lower surface
of the frame i8. The `pairs of levers "d5 and 45’
comprises arms d6 and lili’ and legs ¿il and ill',
which arms ¿Si and 156’ extend substantially hori
zontally outwardly from the pin 3l' in diametri
said rod 23' being pivotally connected at 'lili' to
cally opposite directions from each other and
the outer lower end of the bell crank 'I5'.
bear at their outer ends against the lower ends 0f
The cylinder block 23 is provided with a water
the rods d8 and 48' that operate the vexhaust
jacket 25 for cooling the cylinder 'àl> vand has a
cylinder head '26 containing an intake <valve 40 valves 33 and 33', respectively, against the action
of the springs d2', andthe legs '61 and All" extend
chamber Z'a' and an exhaust valve chamber 28
'downwardly from the pivot'pin 37’ with the lower
therein, and the cylinder block 2Q' is also provided
free ends ¿iii andfíiâ' of the legs ‘being bent and
with a water jacket '25’ for .cooling the cylinder
extending in opposed relation to each Iother for
2i’ and has a cylinder ’head 2t’ containing an
intake valve chamber 2l’ _and an exhaust valve 45 engaging with a single cam 'MI' iixedly mounted
on the crankshaft l adjacent to the other side
chamber 2,8' therein. The intake valve chamber
of the single crank S on the crankshaft i. The
2l of the cylinder heajd '25 is connected in coin
cam lid has a lobe 5i! thereon which extends out
munication with Vthe upper end‘of the cylinder 2l
wardly therefrom substantially 90° from the lobe
through an open port 29 and through an intake
valve 3G seated therein, with the intake _port 3l 50 5B’ on the cam lift’ for a purpose which will here
of the engine connected to any suitable source
inafter appear.
In the operation of the improved internal corn
bustion engine, assuming that the elements Com
of fuel to the cylinder ZI, and the exhaust valve
prising the invention are in the operative posi
chamber 28 is connected in communication with
the upper end of the cylinder 2| throughan open 55 tions as indicated in Figs. 1, 2 and 3, with the
crank shaft I driven in a clockwise direction as
port 32and through an exhaust valve 33 Vseated
indicated by the arrow, and that the >lobe 50 on
therein with the exhaust port 34 of the engine.
the cam 44 for actuating the pairs of levers 3E
The intake valve chamber 2l' of the cylinder
and 36' which actuate the intake valves 30 and
head 23' on the cylinder block‘ZIl’ is connected
in communication with the upper end of the 60 38’ on the cylinder blocks 20 and 2B', respectively,
has been engaged by the lower end 43 on the leg
cylinder 2 I’ through an openport 29' andthrough
43 of the lever 36 whereby the lever is rocked on
an intake valve 33’ seated therein with the intake
its pivot 3l, forcing the arm 39 upwardly and
port 3l’ connected to any suitable source of fuel
unseating the intake valve 30 through `.the Arod
supply (not-shown) for supplying charges 0f fuel
to the cylinder ZI ’, and the exhaust valve cham 65 `«SI against the action of the ‘spring *'42, thereby
permitting a charge of fuel to enter the intake
ber .28’ is connected in communication with the
chamber Z'lof the cylinder head 25 through the
upper end or" the cylinder 2i' through an open
intake port 3| and to enter `the cylinder v2l
port 32’ and through an exhaust valve 33' seated
through the‘open port 29, and .with the lobe 5U’
therein with an exhaust port .34' of the engine.
Separate means in the form of> spark plugs 35 and 70 .on the cam 46’ for actuating the pair vof >levers
e5 and 45’ which actuate the exhaust valves 33
35', in connection with asuitable ignition device
4and 33', respectively, being moved outer-engage
(not shown) for igniting the explosive charge in
ment with the lower ends ¿9 and 435.011 the legs
the cylinders `2i and'ZI’ >of the cylinder blocks 2Q
A‘il .and 4l’ thereof, whereby the exhaust valves
and Ztl', respectively. are provided. The intake
and exhaust valves 39 and 33, respectively, of thev l "33 and 33' of the cylinder blocks 2l) and 2D', re
offuel supply (not shown) for supplying charges
speeuveiy, ere heid by their springe 42' in e seated
Vposition on their respectiveexhaust ports 34 and
Also assuming that a charge of fuel lhas
entered the cylinder 2I’ ofthe cylinder block 20'
and has been ignited by the spark plug « 35',
whereby the piston 22’ is caused to have a power
stroke forcing the piston 22' downwardly in the
cylinder, thus pushing the piston -23’ against the
outer lower end of the bell crank VI5' and rocking
the bell crank outwardly on its pivot~ I6', which
the> continual rotation of the single crank 8, the
vlobe 50’ onthe cam 44’ is caused to gradually
engage the lower end 43' on the leg 40' of the
lever 36' which actuates the lever to raise the in
take valve 30' whereby a charge of fuel is caused
to enter the intake chamber 2'I' of the cylinder
head 26’ of the cylinder block 2B' through the
intake port 3I' and> to enter the upper end of the
cylinder 22’ through the open port 29'.
Upon the crank 8 being rotated 180",` the pis
tons 22 and 22’ will have completed their com
pression and exhaust strokes and the charge of
to be moved outwardly, pulling on the link I 3’
fuel in the cylinder 2| ywill be ignited by the spark
pivoted to a guide element II, and moving 'the
plug 35 which causes the piston 22 to have a
guide element downwardly in the guideway I2
whereby the driving rod IIB Ais pulled downwardly, 15 power stroke, thereby pushing down on the outer
end of the bell crank I5 and rocking the bell
rotating the single crank 8 which in turn rotates
outwardly on its pivot I6, pulling outwardly
the crank shaft I. The inner end of the link
on the outer end of the link I3.
I3 also pivoted to the guide element II is pulled
Upon the link I3 being pulled outwardly and
downwardly which causes the outer end of the
link I3 to push outwardly on the inner upper 20 downwardly, the inner end thereof, pivoted to the
guide element I I, causes the guide element to pull
end of the bell crank I5. thereby rocking the bell
upwardly on the drive rod I3 to rotate the single
crank I5 outwardly on its pivot IB which causes
crank 8. The upward movement of the guide ele
the outer lower end of the bell crank to be moved
ment rocks the bell crank I5' on the pivot I6'
downwardly, thus pulling downwardly on the pis
through the link I3’ whereby the piston 22' is
ton rod 23 and giving the piston 22 in the cylin..
causes the inner upper end of the bell crank I5’
caused to have a suction stroke as illustrated in
der 2| an intake or suction stroke.
Fig. 5.
As the crankshaft I is rotated, the lobe 5I] on
Upon the continual rotation of the crankshaft
the cam 44 is gradually moved out of engagement
I, the lobe Sil' on the cam 44’ gradually engages
with the lower end 43 on the leg 40 of the lever
with the lower end 49 on the leg 4'I of the lever
35, thus causing the lever 36 to rock on its pivot 30 t5 for opening the exhaust valve 33, whereupon
3'! and moving the outer end of the arm 38 of the
the products of combustion may leave the ex
lever downwardly, permitting the spring 42 to
haust port 34. After the crank 8 has been rotated
pull downwardly on the intake valve 30 for seat
27G°, the pistons 22 and 22’ will have completed
ing it on the intake port 3|. The lobe 5B' on the
their power and suction stroke and, upon further
cam 44' for operating the pair of levers 45 and
45' which operate the exhaust valves 33 and 33',
respectively, is then caused to gradually engage
rotation of the crankshaft I, the piston 22 is given
an exhaust stroke and the piston 22' is given a
compression stroke as illustrated in Fig. 6.
the lower end 49’ on the leg 41' of the lever 45',
By this construction, the driving rod I0 is the
whereby. the lever 4-5' is rocked on its pivot 31',
moving the outer end of the arm 4B' upwardly 40 connecting link which transmits the power from
the pistons 22 and 22' to the crankshaft I. lThe
which pushes up on the rod 48' to unseat the
pistons 22 and 22’ will .run double the speed of
exhaust valve 33' from the exhaust port 34' as
the crankshaft, insuring more steady power, also
illustrated in Fig. 4.
giving an impulse at the top and bottom opera
Upon the single crank 8 having been rotated
tive positions of the crank 8, which has a tendency
90°, the pistons 22 and 22’ will have completed
to balance the torque and to give- a more equal
their downward stroke, with the links I3 and I3’
distribution of vibrations. The leverage of the
of the toggle mechanism being in a straight line,
bell cranks I5 and I5', in conjunction with the
whereby the piston 22 is in a position to have a
speed of the pistons transmitted through the links
compression stroke and the piston 22' is in a posi
i3 and I3' of the toggle mechanism and driving
tion to have an exhaust stroke as illustrated in
I0 to the- crankshaft I, will produce more
Fig. 4. As the single crank 8 is further rotated
steady power on a lesser number of cylinders.
the driving rod I Il will still further be pulled
The commonly called slap and push in this engine
downwardly, pulling on the guide element II
which causes the guide element to move down
wardly in the guideway I2 and pulling down
wardly on the inner ends of the links I3 and I3'
pivoted to the guide element, whereby the outer
ends of the links are caused to pull inwardly on
the inner upper ends of the bell cranks I5 and
design occurs on the slide block II but when
power is applied to the load, the pull of the links
i3 and i3’ is in the opposite direction of the slap
and push whichever the case' may be, hence, the
slap and push will be at a minimum. Through
the medium of the pairs of levers, one cam oper
both exhaust valves; likewise, the other cam
I5' for rocking the bell cranks inwardly toward 60 ates
both intake valves. So instead of hav
each other on their pivots I5 and I6', respectively.
As the inner upper ends of the bell cranks are
pulled inwardly, the outer ends thereof are caused
to move upwardly, thereby causing the piston 22
to be given a compression stroke and the piston
22' to be given an exhaust stroke as illustrated
in Fig. 4. The lobe 50 is then gradually moved
from engagement with the lower end 49’ on the
leg 4'I' of the lever 45', and the spring 42' returns
the exhaust valve 33' to its seated position on
the exhaust port 34', pushing down on the piston
rod 48’ which in turn pushes down on the outer
end of the arm 46’ of the lever 45' and causes the
lower end 49' of the leg 41’ of the lever to engage
with the circular portion of the cam 44'. Upon
ing one cam for each valve in this case, one cam
operates two valves for different cylinders.
It will thus be seen that there is herein pro
vided a novel and eilicient form of internal com
bustion engine which is well adapted for all of
the purposes indicated. Even though there has
herein been shown and described an engine com
prising two cylinders in which an explosion takes
place above the pistons in one of each of the
cylinders when the single crank on the crankshaft
is at its bottom and top operative positions on
each cycle of operation, which is equivalent to
using four cylinders and pistons of the present
day motor, it is nevertheless to be understood that
six cylinders rvvith three cranksfat 120° apart with
anwiirnpulse given thereto every 60?, which is equiv
lalentto twelve-cylinders vand pistons of the pres.entday moto-r may be used, or ten cylinders and
pistons `with Jive cranks at 72° apart may be
member, ia pair of pivotally `mounted bell crank
Vlevers operable in opposed and unopposed relation,
links connecting said levers with said driving
rod, »and rods connecting said levers with said
pairof members.
e~ „roy-ed with an impulse given ‘thereto every
36° “",fï'iich is equivalent to a potential twenty
»cylinder engine. Also fourteen cylinders and
pistons with seven cranksat 513/7", with an im
order, Va rotary -rnember including a crank, and
means’connected to be actuated 'by said pair of
pulse given thereto every Z55/7°, which is equiva
lent to a potential `twenty-eight cylinder engine
may 'be employed Without departing from the
->sniritnr scope of the invention.
Having described my invention, what I claim
2. A Vpair of members operable in a prearranged
membersand connected to drive said rotary mem
10 «berfsai‘d means including a driving rod connected
'to said «cranlga pair of pivotally mounted bell
lcrank levers operable in opposed and unopposed
relation, links, one of each of said links connect
ing'one ‘end of veach of said bell crank levers with
as'new and wished to secure by Letters lßatent is: 15 said driving rod, and rods, one of each of said
.,l. A pairV oî‘mernbers operable in a prearranged
rodsconne‘cting one of each ofthe other ends of
order, a rotary member, and means connected
said Vlevers Avwith one of veach of said pair of
to be actuated by said pair of members and con
nected‘to drive said rotary member, said means
including a >driving rod connected to said rotary 20
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