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Патент USA US2137730

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Nov. 22, 1938.
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> 2,137,730
ENGINE
Filed Aug‘. 16, 1937
Sheets-Sheet 1
Nox'r. 22, 1938.
c. F‘ SMITH
2,137,730
ENGiNE “
Filed Aug. 16, 1937
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27 6.5
s Sheets-Sheet 2
Nov. 22, 1938.
2,137,730
C. F, SMITH ‘
ENGINE
Filed Aug. 16, 19's?
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‘ Nov. 22,’ 1938.
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2,137,730’
ENGINE
Filed Aug. '16, 19:7
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8 Sheets-Sheet 4
Nov. 22, 1938.
c‘ F. SMITH
2,137,730
ENGINE
Filed‘ Aug. 16, 19:57
a Sheets-Sheet 5
‘Nov. 22, 1938.
c. F. SMITH
2,137,730
ENGINE
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Filed Aug. 16, 19:57
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Nbv. 22, 1938.
c. F. SMITH
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2,137,730
ENGINE
Filed Aug. '16, 1957
,8 Sheets-Sheet '7
NOV. 22, 1938.
c’ F_ SMITH
2,137,730
ENGINE
Filed Aug. 16, 1957
8 Sheets-Sheet 8
‘Patented Nov. 22, 1938.
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2,137,730
UNITED STATES PATENT OFFICE '
'
2,137,730
Clifton F. srfiltqlfllifmphis, Tenn. '
Application August 16, 1937, Serial No. 159,206
9 Claims.
(01. 121-117)
This invention relates to reciprocating engines
employing a plurality of cylinders and pistons,
the impulses for which pistons maybe furnished
either by steam from an external source, or by
1. internal combustion.
‘
'
.
'
The present vembodiment, which is especially
adapted for aeronautical purposes, has been con?ned, both in the drawings and the speci?cations,
to an internal combustion engine.
It will be
;a distinctly’ understood, however, that the con-
Fig. 8 is an elevation looking in the direction
of the arrow VIII of Fig. 6.
Figs. 9 to 16, inclusive, are diagrammatical
views showing the sequence of movements of the
various parts of the engine shown in Figs. 1 to 5, 5
inclusive, a single cylinder, a single piston, and
a single piston rod having been substituted for
the pairs of cylinders, Piston and Piston rods of
'Figs- 1 t0 5‘
Figs-17 to 21,1nc1usive. show diagrammatically 10‘
struction outlined in a number of the claims is
as readily applicable to a steam engine and is
the Sequence of movements of the Various Parts
01’ the type of engine Shown in Figs- 6 t0 8, in
intended to be so construed.
It primarily relates to an engine construction
i in which the stroke is relatively long as compared
clusive, single pistons, cylinders and piston rods
having been Substituted f0!‘ Pairs 88 in F188- 9
to 16-
II
with the bore of the cylinder and to the means by
Which the transfer of power impulses of the pigton to the crank shaft is accomplished_
The primary object of the invention is to provide an engine which is simple in construction,
durable, light in weight and capable of pmduc_
ing maximum power with minimum vibration
A further object is to provide novel means in
a long stroke cylinder construction for transferring the power-impulses of the (gyhnders to a
crank shaft, and to provide such a means which
Referring now to the drawings, and particular-'
iv to Figs. 1 to 5, inclusive, l0, II are a pair of
opposed cylinders having a common longitudinal‘
axis. i2, 13 are a second pair of cylinders having
also a common axis, these four cylinders being In
connected to a crank case M and constituting one
group of cylinders. I6, I‘! and I8 are three of the
four cylinders of a similar group of cylinders
Spaced laterally from the ?rst group and con‘ ‘
nected to the same crank case I 4 which, how- 25
ever, is shown in two parts, the longitudinal axes
is adaptable to a multiple cylinder construction.
The means by which the foregoing and other
objects are accomplished and the method . of
b their accomplishment will readily be understood
from the following speci?cations on reference to
the accompanying drawings, in wmch__
Fig. 1 is a sectional elevation at right angles
.to the crank shaft taken on the line I_,_I of Figs_
5; 3 and 4, and along the longitudinal center line
of one group of the cylinders of a multi-cylinder
engine, in which all the cylinders are paraneL
Fm 2 1s a sectional elevation taken along the
nne n__n of Figs 3 and 4 and exterior to the
same group‘ of cylinders‘
.1318. 3
a sectional
taken along the line
of‘ the eight cylinders being parallel- The 0y!‘
inders ill to I13, inclusive, are respectively pro
vided with pistons '9' 2°’ 2' and 22- these Pistons
having the usual ‘Piston rings 23- Cynnders' I‘
to is’ inclusive’ and the unshown cylinder’ are
similarly provided with pistons, none of which
are Shown’ but which are identical in construe‘
tion and action with pistons I 9 to 20, inclusive.
Piston l9 and 20 are connected together by
a‘ rigid plsifon rod 2‘ and pistons 2' and 22 by
a similar piston rod 25.- 26 is a block, preferably
in two halves, in which ‘a transcommuter-link
pin 28 of a connecting rod, or transcommuter link
29, is journalled.‘ 30 are bolts securing the piston 40
rOdS
and
to the
and securing the
- III-I11 of Fig. 1.
.
o
‘
halves of the block together to complete the link
Fig. 4 is a sectional elevation taken on the line
IV--IV of Figs. 1, 2 and 3,_being along the crank
' shaft.
'
Din bearing- At its Opposite end the link has a
‘bearing 3| which journals a crank pin 32. h 33 is
a crank disk which carries the crank pin“ and 45
Fig. 5'is an enlarged sectional elevation taken
as on the line V-V of Fig. 4.
Fig. 6 is a sectional elevation of a modi?ed
is integral with, or securely ?xed on, a crank
shaft 34. The shaft 34 is journalled in a bearing
35, carried by one head 36 of the crankcase M.
50 form of the engine in which‘ two groups of cylinders are assembled with their longitudinal, axes‘
at right angles, the view being taken as on line
The transcommuter pin 28 projects through
the block 26 and has secured to its projecting.
end a transcommuter arm 31. The arm 31 is
VI-VI of Fig.‘ 7. -
positioned parallel‘to the transcommuter link 29
>
‘
a
I
/
-
Fig. ‘Tie a sectional elevation on an enlarg
scale taken as on the line VII-VH'o'f Fig. 6.
and constrained to remain in such position, as
by a key 38. 39 is a transcommuter arm pin
- I
2,187,780
projecting transversely from the transcommuter others of the cam 33 than those engaged by the
arm 31 at its opposite end.
levers IOI.
'
The effective length of the transcommuter link
23 is identical with the crank pin radius and the
effective length of the transcommuter arm 31 is
double each of these.
The second group construction duplicates the
?rst group, 50, 5| being the piston rods of the
second group of cylinders. 52 is the journal
upward on opposite sides of the cams 30. Each
of the levers is connected by a link I I 0, a rod 1 I I,
which passes out of the housing 95 through a
stuffing box II 2, and by a ?exible cable II3 to a
rocker arm II4, which operatively engages the
block; 53 the transcommuter link pin; 55 the
end of a valve stem II5, a similar cable and 10
_ I06 and I01 are additional pivot pins from
which similar pairs of levers, I03, I03,‘ extend
transcommuter link; 55 the crank disk; 55 the rocker arm being .provided obviously for each
crank pin; ‘and 51 the crank shaft. 50 is the valve. H5 is a bracket supported at one end by
crank shaft bearing and 53 the second crank -‘ the housing 95 and at the opposite end by a valve
case head. 30 indicates a fragmentary portion stem housing I", which projects from the head
15 of a propeller secured to the shaft 51. BI is the
II8 of the cylinder I2, similar valve housings
transcommuter arm duplicating the arm 31, and projecting from each of the other heads and
32 the transcommuter arm pin corresponding to similarly supporting additional brackets. II 9 is
the pin 33. Both the pin 33 and the pin 62 are a pivot pin for the rocker arm Ill and for a sec
hollow. They are coupled together, as by a bolt ond rocker arm I20, these two arms operating
03 on which at least one of them is free to turn,
it being readily seen that a stud, secured in one
the intake and exhaust valves of the cylinder I2
and being guided in their movements bythe
of the pins and journalled in the other thereof,
housing In.
will accomplish the same purpose. The two pins
33 and 32 so coupled are preferably‘ journalled
in a shoe 54, which shoe is slidably mounted be
The engine here shown is the four cycletype,
each cylinder having an exhaust valve I30 and
an intake valve I3I. I32 are the exhaust pipes 25
and I33 ‘the intake manifolds, which lead from
the carburetors I34 to the cylinders.
tween guides 55, which guides are disposed at
right angles to the longitudinal axes of the cylin
ders and of the crank shafts. The guides 65 are
In Figs. 6 to 8, inclusive, two groups of cylin
preferably carried by a diaphragm 55 which is ' ders have been arranged with their axes at right
disposed between the two halves of the crank case angles instead of parallel, as before described. 30
I4, these halves being ?anged for the purpose. In this arrangement, designated as X motor, the
The crank case heads 36 and 53 and the inter - cylinders, and many of the other parts, may be
mediate diaphragm may be secured in any usual identical in construction and function with those
or well known manner, as by bolts, which to heretofore described, and these parts have been
reduce the detail are not here shown.
.»,
given the same numbers with the letter “A” as
‘l0 and "II are‘ half time shafts for the group a su?ix.
of cylinders I0 to I3, inclusive, and ‘I2, 13 half
time shafts for the other group of cylinders.
Mounted on the shaft ‘I0 and secured, as by
40 aykey ‘I4, is a gear ‘I5, and similarly mounted
and secured on the shaft ‘II is a gear ‘I5, which
gears both mesh with a pinion ‘II of one half
relative pitch diameter which is mounted on
shaft 34 and secured thereto by a key 18.
Similar gears ‘I9 and 80 and meshing pinion
45
0i are respectively secured on the half-time shafts
‘I2 and ‘I3 and the shaft 51. 32 is a distributor
driven by the half-time shaft ‘I0, which dis
tributor is suitably wired to spark plugs 83 on the
cylinders I0 to I3, inclusive. 3‘ is a second dis
tributor suitably wired to spark plugs 35 on the
other group of cylinders.
.
33 are cams mounted on the shaft ‘I0, these
cams being secured as by the joint key 3 I. 32 are
spacer disks alternating with the cams 30. 33 are
similar cams similarly secured on the shaft ‘II,
and 34 the alternating spacers. 35 is an enclos
ing housing. The cams '30 andv 33 actuate the
valves of the cylinders‘ III to I3, inclusive, and
a similar group of cams mounted on the half
time shafts ‘I2, ‘I3, actuate the valves of the
opposite group of cylinders. I00 is a pivot pin
on which is mounted a pair of levers, IOI, these
levers depending past the cams 93. Preferably
IOA, IIA, I2A and I 3A are the cylinders con- '
stituting one group, and ISA, ISA, HA and I 8A
are the cylinders constituting a second group at
right angles, these groups being connected to a 40
joint crank case “A. ISA, 20A, 2IA and 22A are
the pistons of the ?rst group, the pistons of the
second‘ group not being shown. Pistons ISA and
20A are connected together by a rigid piston rod
24A, and the pistons 2IA and 22A by a similar 45
rod 25A. 26A is the journal block, the two piston
rods and the block being rigidly secured together
by bolts 30A. 32A is the crank pin, 33A the
crank disk which carries this pin, and 34A the
'crank shaft which isjournalled in the bearing 50
35A, carried by one head 35A’ of the crank case
“A.
-
50A, 5IA are the piston rods of the second
group of cylinders I5A to ISA; 52A is the halved
journal block. 55A is the crank disk; 55A the 55
crank pin, which has the same throw as the crank
pin 32A; 51A the crank shaft and 59A the second
crank case head.
The piston rods 24A, 25A are connected to the
crank pin 32A through a .transcommuter link 60
I50, one end of which is journalled on the crank
pin 32A.
Integral with. and projecting from
the opposite end of the link I50, is a transcom
muter link pin I5I, which is )journalled in the
journal block‘ 20A.
'
>
65
each of these levers has a heel I02, which pro
The piston rods 50A, 5IA are connected to the
jects between a pair of the disks 92 to position . crank pin 58A through a transcommuter link
the lever along the pin I00, these heels not pro
I52, one end of which journals on the crank pin
iecting into the path of the cams 00. The lower 58A. Integral with the opposite end of the link
end of ‘each lever lies between a pair of the disks I52 is a transcommuter link pin I53, which is
70
34 and against a cam 33. I03 is an oppositely journalled in the journal block 52A.
- disposed pivot pin from which an additional pair
Link pins III and I53 are integrally secured to
of levers I04 depend, these levers lying on the a transcommuter bar I53, this bar and the links
opposite sides of the cams 33 and alternating I50, I52 being thereby joined into a unitary trans
“is with the levers "I, so that levers I“ engage commuter. In this transcommuter the center 75
3
2,137,730
lines of the pins IiI and I5! and ,0! the bearings
for the‘ crank ‘pins 32A, 56A lie in the same plane
and are parallel, the distance between the pin
|<§,I and its related bearing for the pin 32A, and
commuter link 29. have moved the crank arm 33,
between the pins I5I\ and I53 is equal to twice
tive direction. In these movements tra'nscom
'muter arms 31- and GI have shifted the trans
forty-?ve degrees from‘its first-shown position. ‘
Similarly. piston J, through rod M, has-moved
block 52 and its journalled pin toward thecrank
. the distance between the pin I53 and its related shaft 51 (aligned with shaft §4),_and through
bearing for the pin ‘56A, are each equal to-the theltranscommuter link 54 has moved the arm
crank radius of these pins, and the distance‘ - forty-?ve degrees also, though in opposite rela
this radius.
.
v
The valve and ignition mechanism is identical
with that‘beforedescribed and need not be'fur
vther described’.
.
'-
y
l
‘
It will be understood that with both types each
commuter arm pins 39 and 62 outward along the 10
guides 65, and the pins 39 and 62 being coupled
together by the bolt 63 (Fig. 3) and being "jour
nalled in a joint shoe 64, are compelled to move
group of four cylinders functions as a ‘complete . concurrently and to interchange power-impulses
15 1 unit and that an engine‘ of this time maybe so‘ and timing between the two piston groups and
built. It will also be understood that single their shafts, providing a means- whereby ‘the
] opposed cylinders, having a common longitudinal ' power of both groups may be available from either
axis, may‘be used instead ‘of ‘opposed pairs‘ as
shown, particularly where two cycle or steam is
20 used. Advantage has been taken of this fact
I to simplify the diagrammatic drawings, Figs. 9
to 16, inclusive, of the parallel, cylinder type and
the drawings 1'7‘ to 21, inclusive, of'theiX motor
type. In Figs. 9 to 16, -the pair of cylinders III,
25 I2,~are represented by a single cylinder C, cylin
ders II, I3 by cylinder D, cylinders I5, H by
cylinder E,~'and cylinder‘ I 6, III by cylinder F;
similarly each pair of pistons issrepresentéd by
1a single piston G, H, J, and K, respectively, and
each pair of piston rods by'a single rod Nfand
M, respectively. The crank disks 33 and 55 have
been replaced by their equivalent crank
similarly numbered.
arms ,
.
.
In Figs. 17 to 21, inclusive, N, P, Q and R are
cylinders representing the pairs of cylinders;' S, -
T, U and V‘thepistons and W and Y the piston
I Crank arms v33A and 55A have been used in
stead ot the equivalent vcrank disks.
40 _ t
‘
Operation of parallel cylinder :motor
In operation, referring to_ Fig. 1, the rigid as
sembly comprising the four pistons, I9 to 22, the
piston rods 24 and 25 and the journal block 26'
are shown as starting toward the left, as under
the impulse from a ?red charge in the cylinder .
II. At the same time a charge is being com
the shaft 34 or the shaft 51. 5 '
,
v In Fig. 11 the two crank arms 33, 55 reach a
ninety degree position and the'transcommuter
arm pins 39, 62 the outer limit of their travel in
the guides 65; the pistons have reached mid
stroke and are travelling twice as fast as the
crank pins.
.
In Fig. 12 both crank shafts-have travelled one 25
hundred and thirty-?ve degrees, and the coupled
transcommuter-arm pins 39, 62 are returning
along the guides 65.
In Fig.v 13 one hundred and eighty degrees have
been reached, the transcommuter-arm pins 39,
so
62 are aligned with the crank shafts 34, 51 and
'moving from above to below the same, and the
power-impulses have transferred from cylinderv
D to cylinder C, andirom cylinder E to cylinder
35
In Figs.'14, 15 and 16 the cycle continues, re
turning to that shown in Fig. 9, the action corre
sponding to’that' of Figs. 9 to 12, respectively.
Referring to Fig, 11 or Fig. 15 (the crank arms.
being at ninety Idegrees) , it will be noted that the 40
tran’scommuter link 29 overlies the crank arm 33,‘ "
so that the transcommuter link pin journalledf
in the block 26 (the pin 28 of Figs. 1 and 3) is
concentric with the shaft. 34. Should a single
cylinder group engine stop in such position, it 45
would be possible,v but for the transcommuter
arm 31, and the guides 65, toturn the shaft ‘34;
pressed in cylinder In, a charge is being drawn the crank arm as and the link 29, the link pin
'into cylinder l3 through intake valve I3I, and a turning in the block 26 and transmitting no move-~
50 spent charge is being exhausted from cylinder I2. ‘ ment to the piston rods or pistons, though ob 50
As the block 28 moves toward the crank shaft 34, viously movement of the pistons would shift the
the transcommuter link 28 forces the crank pin block 26 and impart movement to the crank arm
~32 upward turning the shaft 34.‘ Concurrently and shafts, and for proper action the transcom
the shoe 64 is moved by the pin 39 outward be
muter arm 31 is essential.
5 ‘tween the guides '65, and at right angles to the
‘
Operation of X motor
line of piston travel. At one end of the stroke
either the cylinder 20 or 22 gives a power-impulse,
The rigid assemblycomprising the four pistons
and at the opposite end, one of the pistons I9, 2 I, I9A to 22A, the=piston rods 24A and 25A and the
. gives an impulse.
60
-
‘
.
e complete cycle of operation thus accom
plished is .diagrammaticallyshown in Figs. 9 to
to, inclusive. In Fig. 9 all the pistons are at one
or the other ends of their respective ~strokes, pis
ton H-‘and piston‘ J being ready to ‘move toward
65 the crank shafts 34,51, and pistons‘ Gand K be
ving correspondingly in position, to begin move
ment away from the shafts. The crank arms 33
and 55 are omdead center and all pins in line;
As, movement begins piston-impulse
acting‘
70 through transcommuter links 29 and 54- on crank
arms 33, 65, turns them respectively counter
clockwise and clockwise, In Fig. 10, the block 26
and thepin journalledtherein (pin 2B,_Figs. 1.
. and 3) , have been moved by piston H and rod L
15 toward the crank shaft 34 and through the trans
journal block 26A, move as one unit under sue
cessive impulses on the four pistons, and the cross 60
positioned assembly moves similarly.
-
,
In Fig. 6 piston 20A is shown as moving down
ward and toward the left under the action of a
?redicharge; piston. I9A as compressing an addi
tional charge; piston 22A as drawing in a charge; 65
andv piston 2 IA as exhausting a ?red charge, thus
giving two impulses each revolution for these
four cylinders and the additional four cylinders
I5A to ISA giving" two additional impulses per
revolution.
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'
'
-
In Fig. 17 piston S, acting through piston rod
W" on journal block 26A and transcommuter pin
I5I, transmits power through the transcommuter
link I50 to the crank arm 35A and to the crank
shaft 34A, and‘throu'gh the transcommuter bar
70
4
2,187,780
ISA, the transcommuter link pin I53, the trans
commuter link I52 to the crank arm “A and the
crank shaft 51A. Concurrently expansion in
cylinder R acting through piston V and piston rod
‘ Y on link pin
tion.
I53, adds power in the same direc
»
'
‘ In Fig. 18 the crank arms 33A, “A have moved
forty-?ve degrees from the position shown in Fig.
17, piston S continues its thrust at increasing
10 angularity with regard to transcommuter link
I II, and piston V approaching the end of its stroke
is still exerting thrust on pin I53.
'
In Fig. 19 crank shafts 33A and 55A are at
ninety degrees to their original position and all
pins are again in alignment. [Piston V has com
pleted its stroke, Piston T is in ?ring position
and becomes the primary power piston; and pis
ton S is at mid-stroke exerting its thrust at right
angles to transcommuter link I50.
20.
In Fig. 20 the crank arms have completed one
hundred and thirty-?ve degrees of movement
vfroni Fig. 17. Piston S is approaching completion
of its expansion stroke. Piston T is acting under
expansion. Piston U is approaching the end of
25 the compression stroke.
In‘ Fig. 21 the crank arm has completed one
' hundred and eighty degrees travel from the posi
so
radius of said pin, a transcommuter arm of equal
length with said link extending from said link
beyond said crank; and guide means rigidly car
ried by'said crank case, at right angles to said.
crank shaft and to the axesvof said cylinders,
said means reciprocably receiving the end of said
arm.
, 4. An engine, includinga crank case having
axially aligned bearings at its opposite ends,
crank shafts, each journalled in a‘ said bearing,
crank discs carried each by a said shaft, and
crank pins of equal throw. carried each by a said
disk; four cylinders in axially aligned pairs
spaced apart, extending along parallel lines out 20
ward from said crank case, pistons reciprocably
mounted, one in each said cylinder, a pair of pis
ton rods, one for each said aligned pair of cyl
inders, each rod rigidly connecting the pistons
.of its respective said cylinders, bearing means,. 25
each carried by a said piston rod intermediate
its length, transcommuter links, each equal in
‘tion shown in Fig. 17. Piston S has completed its ' length to the throw radius of said crank pins,
expansion stroke, piston T is acting under expan
each connecting a said crank'pin and a said pis
sion, piston U is in firing position and is the pri
ton bearing, said links having each a rigidly ex-. 30
mary power piston; and piston V is on its com
tending transcommuter arm of.equal length, and
pression stroke.
meansmpivotally connecting the extended ends of
In the subsequent half cycle, pistons W and V said arms. ‘
successively become the primary power pistons es
35 tablishing a continuous flow of
power on both -
crank shafts.
What I claim is:
40
ders each having a piston reciprocably mounted
therein, a piston rod extending past said crank
member and rigidly connecting said pistons, a
link journalledgat one end on said crank pin and
at its opposite end journalled to said piston rod,
the length of said link being equal to the crank
.
_
5. An engine, including a crank case having
axially aligned bearings at its opposite ends,.
crank shafts; each journalled in a- said bearing,
crank members carried each by said shaft, and
1. An engine, including a pair of axially aligned , crank pins of equal throw carried each by a said
cylinders having each a piston reciprocally member; four cylinders in axially aligned pairs
mounted therein, a piston rod rigidly connecting spaced apart, extending along parallel lines out 40
said pistons‘, a bearing on said rod, a shaft, a
crank member connected to said shaft, a crank
pin carried by said member, a link having one
end- journalled on said crank pin and the op
ward from said crank case, pistons reciprocably
mounted, one in each said cylinder, a pair of
piston rods, one for each said aligned pair of
cylinders, each rod rigidly connecting the pistons
posite end rotatably secured to said piston rod of its respective said cylinders, bearing means,
bearing, the length of said link being equal to each carried by a said piston rod intermediate its 45
the crank radius, said link having a rigid exten- ‘ length, transcommuter links, each equal in length
sion of equal length, and a guide reciprocably re
to the throw radius of said crank pins, each
ceiving the end of said extension, said guide ex- .
50 tending across the axis of said crank shaft at
right angles to said axis and the axis of said cyl'i ,
inders and being a rigid part of said engines.
2. An enginenincluding four cylinders in axi
v I ally aligned pairs, said cylinders having each a
55
60
'
65
,.
piston reciprocabiy mounted therein, piston rods,
connecting a said crank pin,and a said piston
bearing, said links having each a rigidly extend 50
ing transcommuter arm of equal length, means
pivotallyconnecting the extending ends of said
arms, and guide means rigidly secured to said
crank case at right angles to said cylinder axes
and crank shafts, said means extending later 55
ally outward from the axis of said cranku shafts
and reciprocably receiving said arm connecting
each‘ rigidly connecting a said pair of pistons, a
bearing rigidly secured between and securing said
piston rods together, a shaft extending at right .‘means.
angles from the axes of said cylinders and rods,
6. An engine, including a crank case having
crank means including a crank pin carried by axially aligned vbearings at its'opposite ends, crank
said shaft, 9. link having'its opposite ends jour
shafts, each journalled in a said bearing, crank
nalled on \said pin and in said bearing, said link members carried each by said shaft, and crank
and said crank means being of equal length, said . pins of equal throw carried each by a said mem-v
link having a rigid arm of equal length extend ' her; four cylinders in axially aligned pairs spaced
ing beyond said crank pin’; and a guide reciproca
apart, extending along parallel lines outward
bly receiving the end of said arm3 said guide from said crank case, pistons reciprocably mount 65
being at right ‘angles to said shaft and to‘ the ed, one in each said cylinder, a pair of piston
vaxes of said cylinders and‘ being a. rigid part of rods, one rod for each said aligned pair of cyl
said‘engine.
v‘
~
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indera'each rigidly connecting the pistons of its
3. An engine including a crank case, a shaft respective said cylinders, journal bearings, each
journalled in- said case, a crank member secured carried. by a\said piston rod intermediate its 70
on said shaft, a crank pin projecting from said - length, transcommuter links, each equal in length
member, a pair'of cylinders in axial alignment
extending from opposite sides of said‘crank case
76 at right angles to said crank shaft, said cylin
to the throw radius of said crank pin, said links
being journalled respectively‘ each on a said
crank pin and having each a transcommuter pin
5
9,187,780
journailed in a said piston bearing, said links
having each a rigidly extending transcommuter
arm, said arms being of equal length, and rig
idly secured each on a said transcommuter pin
‘and respectively extending each from its said
pin parallel with said transcommuter link twice
the length of said link, each said transcommuter
arm having a hollow pin projecting laterally at
its inner end toward the complementary pin of
10 the other said arm,-a bolt passing through said
to and projecting from opposite sides of said
crank case in a plane at right angles to said crank
shafts, a complementary pair of axially aligned
cylinders secured to and projecting from said
case in a spaced parallel plane, the said cylin
der axes being at right angles, each said cylin
der having a piston reciprocably mounted there
in; a pair of piston rods, one for each said aligned _
pair of cylinders, each said piston rod rigidly
connecting itsrelated pair oi’ pistons, each said 10
hollow pins and rotatably securing said pinsto
piston rod having a journal bearing midway its
gether; a guide rigidly carried by said crank case
length and a transcommuter for coupling said
and disposed between said arms, said guide be
ing at right angles to said shafts and said pis
crank pins ,to' their related piston rods, and the
,engine units thus formed together, said trans
ton rods, and a shoe reciprocably mounted in
said guide and journalled on said hollow pins.
7. An engine, including a crank case having
axially aligned bearings extending from opposite
commuter, comprising a connector bar having a ll
pair of pins adapted to journal in said piston rod
bearings, said pins respectively being at opposite
ends of said bar and extending rigidly in opposite
directions at right angles therefrom, and a pair
of links spaced from said bar, rigidly secured
ends thereof, shafts, each journalled inv a said
bearing, each said shaft having a crank disk
within saidcase and a crank pin projecting from each to a said pin and extending‘ along and par
said disk, the crank radius of said pins being allel with said bar, each said link having a hear
equal; a first pair of axially aligned cylinders ing adapted to journal a said crank pin, the
secured to and projecting from said crank case length of said links being equal to the crank
in a plane at right angles to said crank shafts, _'l‘8.d1ll$ and the length of said bar to the crank
a complementary pair of axially aligned cylinders
diameter.
-
9. An engine, including a crank case having
spaced parallel plane, the said complementary‘
axially aligned bearings extending from oppo
site ends thereof, crank shafts, each journalled
cylinder axes being at right angles to the ?rst
30 said cylinder axes; each said cylinder having a
piston reciprocably mounted therein; a pair of
piston rods,‘ one for each said aligned pair of
- cylinders, each said piston rod rigidly connect
ing its related pair of pistons, each said piston
35 rod carrying a bearing intermediate its length,’
a pair of parallel transcommuter links, each ly
ing between a said crank disk and a related said
in a said bearing, each said shaft having a crank
disk within said case and a crank pin project
ing from said disk, the throw of said pins be
ing’ equal, a‘ilrst pair'of axially aligned cylin
ders secured to and projecting from opposite
sides of said crank case in a plane at right an
gles to said crank shaft, a complementary pair
of axially aligned cylinders similarly secured to
length of said links being equal and equal to the
and projecting from said case in a spaced par
allel plane, the said cylinder axes being at right
angles, each said cylinder having a piston re
ciprocably mounted therein; a pair of piston rods,
one for each said aligned pair of cylinders, each
crank radius; and a transcommuter connector
said piston rod rigidly connecting its related pair
piston rod and being journalled on a said crank
pin, said links having a rigidly extending trans- '
40
.
secured to andpprojecting from said case in a
commuter 'pin extending therefrom through its
respective said piston rod bearing, the effective
rigidly secured to and joining the projecting ends
of said transcommuter pins, said connector ly
ing between said piston rods and parallel to both
said transcommuter links.
»
8. An engine, including a crank case having
axially aligned bearings extending from oppoe
site ends thereof, crank shafts, each journalled
in said bearings, each said shaft having a crank
disk within said case and a crank pin projecting
from said disk, the throw of said pins being equal,
a ?rst pair of axially aligned cylinders secured
of pistons, and having a journal bearing inter
mediate its length; a pair oi.‘ links in parallel, each 45
journalled on a said crank pin and having a pin,
joumalled in a respective said journal bearing,
the eifective length of said links being each equal
to a crank pin radius, and means rigidly se
cured to said link pins, compelling said links to
remain, in parallelism, the effective length of said
means equalling a crank diameter.
cmr'ron vr‘. SMITH.
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