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Патент USA US2131595

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Sept. 27, 1938.
c. MONTl
.
2,131,595 '
TWIN CYLINDER ENGINE
Filed Oct. 29, 1957
INVENTOR
Patented Sept. 27, 1938
2,131,595
entree stares eA'raNT OFFICE
2,131,595
TWIN CYLINDER ENGINE
Charles Monti, Bay Shore, N. Y.
Application October 29, 1937, Serial No. 171,615
1 Claim.
This invention relates to new and useful im
provements in a twin cylinder engine.
The invention has for an object the arrange
ment of the cylinders of an engine in a particu
5
lar manner.
More speci?cally, it is contemplated to arrange
them in pairs, the cylinders of each pair being
radially distanced 180° from each other.
Still further the invention proposes to utilize a
v'10 conventional crankshaft with a plurality of crank
elements for connecting with the connecting rods
of the pistons of the cylinders for the convention
al operation.
Speci?cally, it is proposed to arrange the con
15 meeting rods of each pair of cylinders ‘with dif
ferent ones of said crank elements.
Still further the invention proposes the associa
tion of an eccentric bushing’ with each of the
cranks in a particular manner so as to be capable
20 of being adjusted for controlling the compression
characteristics of the cylinders and other char
acteristics of the engine.
For further comprehension of the invention,
and of the objects and advantages thereof, ref->
25 erence will be had to the following description
(o1.v 123-48)
The cylinders of each pair are arranged radially
distanced 180° from each other. A crank shaft
M is provided with a plurality of cranks Ma.
Connecting rods l5 connect together the pistons
of each pair of ‘the cylinders with different ones 5
of the said crank elements Ma.
’
The particular engine illustrated inFig. 1 is an
8 cylinder engine, but this is merely-for illus
trative purposes as the invention'may be applied
to different numbers of cylinders.
'
5
10
In Fig. 1 a preferred wiring for the engine is
disclosed. A distributor I6 is connected with a
circuit H for controlling the ignition of cylinder
we and I21’. A circuit I8 controls cylinder l2a
and “lb. A circuit l9 controls cylinder I?a and 15
Mb. A circuit 20 controls cylinder Ha and l3b.
Sectional view Fig. 2 illustrates a section
through two of the cylinders which ?re simulta
neously. These cylinders are in the suction po
sitions. In Fig. 3 the crank shaft is shown turned 20
to a position in which compression is taking place.
In Fig. 4 we have the explosion stroke, and in Fig.
5, the exhaust.
‘
The enginev illustrated in Figs. 1-5 inclusive is
one in which the cylinders are arranged hori- 25
and accompanying drawing, and to the appended
zontally.
claims in which the various novel features of the
invention are more particularly set forth.
In the accompanying drawing forming a mate
In Fig. 6 a modi?cation of the invention is
shown in which there is a vertical sectional view
of an identical engine to that previously de
30 rial part of this disclosure:-—
.
Fig. 1 is a transverse sectional view of a twin
cylinder engine constructed according to this in
vention, with schematic ignition wiring applied
‘thereto.
35
Fig. 2 is a transverse. sectional view of the en‘
gine shown with a pair of the pistons in the suc
tion position.
Fig. 3 is a view similar to Fig. 2 but showing the.
pistons in the compression position.
.59
Fig. 4 is another view similar to Fig. 2, but illus
trating the power stroke.
Fig. 5 is another view similar to Fig. 2 but il
lustrating the exhaust.
‘
Fig. 6 is a sectional view similar to Fig. 2 but of
4.5 a modi?ed engine, vertical type.
Fig. '7 is a sectional view of another engine con
structed according to this invention.
Fig. 8 is a fragmentary sectional view of a por
tion of the crank shaft and connecting rods of a
50 modi?ed form of invention.
Fig. 9 is a sectional view taken on. the line 9-9
of Fig. 8.
The twin cylinder engine, according to this in
vention, is provided with a plurality of pairs of
55 cylinders ma, mb, Ha, Hb, l2a, I21), I3a and I9’.
scribed, except positioned with the cylinders ver- 30 ‘
tically. It should be understood that the inven
tion is applicable to horizontal, vertical, and all
different angularly positioned engines.
In Fig. 7 another embodiment of the invention
has been disclosed which distinguishes from the 35
prior form merely in the construction of the
crank shaft. The crank shaft I4’ is provided
with a plurality of cranks Mae and between each
of these cranks there is a bearing 22. It is in
this respect that Fig. 7 distinguishes from Fig. 1 40
in which there is a bearing 23 between the pairs '
of the rungs of the crank shaft.
In Figs. 8 and 9 a modi?cation of the engine
has been disclosed wherein there is an arrange
ment for controlling the degree of compression 45
of the engine. This controlling means is associ
ated, particularly, with the crank shaft and the
connecting rods. There is ‘a crank shaft I4"
having crank elements l4“. Each of these crank
elements is provided with an eccentric bushing 23. 50
This eccentric bushing has an outer peripheral
surface of true cylindrical form. The eccentricity
is accomplished by the fact that the bore through
which the crank element Illaa passes is arranged
oif center. The eccentric bushing 23 is also pro- 55
2
2,131,595
vided with disc shaped end ?anges 24 which are
in face contact with the radial arm portions of
the crank shaft. Set screws 25 threadedly en
gage through the radial arm portions and the
crank shaft and abut against the ?ange portions
24 for holding the eccentric bushing in rotative
adjusted position; that is, ?xed upon the crank
element [4“.
The connecting rods of each pair of cylinders
10 are rotatively mounted adjacent each other on
different ones of the eccentric bushings 23. On
each bushing the connected rods are separated
from each other by a washer 26.
The screw 25 may be loosened to free the ec
15 centric bushing 23, which then may be turned
on the crank element M” for drawing in or
While I have illustrated and described the pre
ferred embodiments of my invention, it is to be
understood that I do not limit myself to the
precise constructions herein disclosed and the
right is reserved to all changes and modi?cations
coming within the scope of the invention as
de?ned in the appended claim.
Having thus described my invention, what I
claim as new, and desire to secure by United
10
States Letters Patent is:—
In an engine, a cylinder, a piston slidably sup
ported in said cylinder, a connecting rod con
nected at one end to said piston, a crank element
connected to the other end of said rod for turning
said element when said piston moves in said 15
cylinder, and means on said crank element capa
extending the connecting rods mounted thereon.
In this manner the compression of the‘ cylinder
ble of being adjusted for controlling the path of
movement of said piston within said cylinder,
to which the connecting rods are associated may
so that the compression limit of said piston may
be increased or ‘decreased, as desired, comprising 20
an eccentric bushing rotatively supported on said
crank element and having the said end of said
20 be controlled. The compression compass may be
increased or decreased. In this manner the
characteristics of the engine may be varied and
controlled.
-
The other details necessary to have an opera
tive engine are not disclosed in this speci?cation
since they are well known to those skilled in the
art. Speci?c reference is had to a lubricating
system, a cooling system, a Valve system and all
the other intricacies generally associated with an
engine of the type illustrated, are well known.
connecting rod rotatively supported thereon, and
means for holding said bushing'against rotating
on said crank element for holding it in adjusted 25
positions, comprising outwardly extending ?anges
formed on the ends of said bushing, and set
screws engaging through portions of said crank
element and abutting said bushing.
CHARLES MONTI.
30
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