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Патент USA US2407102

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Sept. 3, 1946.
Filed June 4,1943
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Patented Sept. 3, 1946
Elmer Ryder, Berwyn, Ill.
Application June 4, 1943, Serial No. 489,613
1 Claim. (Cl. 74—604)
The present invention relates to an internal
combustion engine or other mechanism including
a piston and crankshaft, and especially to a novel
means and‘method of balancing an engine of the
embodiment disclosed in the ‘drawing; the single
cylinder internal combustion engine I is shown as
provided with a crank case 2 mounted upon a
base 3 and having a cylinder 4 provided with cir
single cylinder type for most effectively counter
cumferential cooling or radiating. ?ns 5 exposed
acting or eliminating the vibrations incident to
to the atmosphere. A piston 6 is adapted to re
the operation of such an engine. ,
ciprocate within the, cylinder 4 and it in turn
Among the objects of the present invention is
reciprocates a connecting rod 1 having its upper
to provide an internal combustion ‘engine‘of the
end connected to the piston by means of a wrist
single cylinder type in which the tortional and 10 pin 8, and its lower sleeved end 8 split and encom
other vibrations incident to the reciprocation and
passing a crank pin l0 carrying at its opposite
operation of the piston and connecting parts is
ends the spaced eccentric weights H and l 2. Each
substantially eliminated and thereby assuring op
weight is suitably keyed to or secured upon one
timum efficiency. In the disclosed embodiment
of aligned sections l3 and IA of a crankshaft, with
the invention comprehends a novel counterbal 15 the end H of the crankshaft journalled within a
ancing means so constructed and arranged as to
bearing I5 adapted to be inserted or removed
insure continuous, smooth operation.
from the exterior of the crank case and provided
The invention further comprehends a novel
with a cap or plate l6 adapted to be secured to
construction and assembly of an engine of the
or mounted upon the exterior by suitable retain
single cylinder type whereby its usefulness is 20 ing means such as bolts or the like l1. Similarly,
greatly enhanced and its manufacture, assembly
the outer end of the shaft I4 is journalled within
and repair may be greatly expedited.
a removable bearing [5' having a demountable
Further objects are to provide a construction
cap or plate l6’ for securing the journal within a
of maximum simplicity, efficiency, economy and
wall of the crank case 2 by means of bolts or other
ease of assembly and operation, and such further 3,, securing means 11'.
objects, advantages and capabilities as will later
The stub shaft or crank shaft section l3 also
more fully appear and are inherently possessed
carries a gear l8 in continuous mesh with and
driving a similar gear [9 keyed to and mounted
upon an auxiliary or driven shaft 20. Also ec
The invention further resides in the construc
centrically mounted upon or keyed to this aux
tion, combination and arrangement of parts illus
iliary or driven shaft is a balance weight 2|,
trated in the accompanying drawing, and while
which in the disclosed embodiment is disposed
there is shown therein a preferred embodiment,
intermediate the eccentrically mounted weights
it is to be understood that the same is susceptible
H and I2 on the crank shaft. This counter
of modi?cation and change, and comlprehends
other details, arrangements of parts, features and 35 balancing weight 2| is rotated in timed relation
with and in a direction opposite to that of the
constructions without departing from the spirit
spaced, eccentric weights II and I2 and is adapt
of the invention.
In the drawing:
ed to counteract these last mentioned weights in
the cycle of operation.
Figure 1 is a view in end elevation of a single
cylinder engine constructed in accordance with 40 The opposite ends of the sections of the aux
iliary or driven shaft 20 are journalled in de
the present invention.
tachable or removable bearings 22, 22, adapted
Figure 2 is a fragmentary view in vertical cross
section taken in a plane represented by the line
to be inserted and removed from the exterior of
2—2 of Figure 3.
the crank case and with one end of a shaft sec
Figure 3 is a view in horizontal cross section 45 tion extending to the exterior of the crank case
through the engine and more particularly show
and thereat providing a drive shaft for supplying
ing the relationship of the parts.
power to a driven member or unit. Any suitable
Figure 4 is a view in vertical cross section
means may be provided for anchoring these bear
through the crank and auxiliary shafts taken in
ings or journals in position such as an enlarged
a. plane represented by the line 4-4 of Figure 3, 50 head or cap 23 by which these journals maybe
but showing the balancing‘ weights in another
secured upon the exterior of the crank case by
position in their cycle of rotation.
any suitable means such as bolts or other secur
Figure 5 is a view similar to Figure 4, but show
ing means. By making the bearings l5, l5’ and
ing still another position of the balancing weights.
22 removable, the operating parts within the
Referring more particularly to the illustrative 55 engine may be quickly assembled by insertion
upwardly through the base 3 and the ends of the
shaft sections thereafter inserted in the aligned
journals or bearings [5, I5’ and 22 and the latter
then suitably secured in place.
The invention further comprehends providing
vertically upward as in Figure 4 or in a position
concentric weights such as ?y wheels 24, 24 on
the sections of the crank shaft and a weight or
Having thus disclosed my invention, I claim:
In an internal combustion engine comprising
?y wheel 25 on a section of auxiliary shaft keyed
to and rotating in opposite directions with their
a single upright cylinder, a piston reciprocable
in said cylinder, and a horizontally disposed
180° therefrom, they balance the piston 6. This
effectively prevents or counteracts the usual vi
brations incident to the operation of a single
cylinder engine.
respective shafts. The weight 25 aggregates-that 10 crank shaft connected to and‘. driven by the pis
of the weights 24, 24 and these weights, along
ton, an eccentriemass secured" to the crank shaft,
an auxiliary shaft mounted parallel to and dis
with the weights H, I2 and 2|, a?‘ord smooth
operation under any and all conditions.
posed in the same horizontal plane as the crank
In the operation of the present engine, the;
shaft, gearing between the shafts whereby the
auxiliary weight 2| counteracts the weights H 15 auxiliary shaft is rotated oppositely to and at the
same angular speed as the crank shaft, and an
and I2, and due to the geared connection of'the
eccentric mass- substantially equal in effect to the
crank shaft to the auxiliary shaft 20, these shafts
and their respective weights rotate in opposite
?rst mass secured to said auxiliary shaft, said
masses. being disposed at similar points in their
directions and in timed relation. Thus when,
these balancing weights are disposed in the posi 20 cycles in their upper and lower positions, and in
tion shown in Figures 2 andv 3 or in a position
opposition to one another in. their horizontal
180° therefromv as shown in Figure 5, they bal
ance each. other, and when they are. positioned
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