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Dec. 31,1946.
2,413,357
v. G. KLEIN
RECIPROCATING MECHANISM
Filed Feb. 1'7, 1945
'
2,413,357'
3
nected with a pressure supply pipe 11. In the
case of a pump it forms part of the outlet pas
sages.
understood that the number of cylinders may be
increased.
From the above it will be seen that the inven
In each valve passage E5 is a piston valve 19.
tion provides an extremely simple mechanism for
Each valve is of generally cylindric form having a 5 carrying out either pump or engine constructions.
peripheral groove 8| which, through radial ports
The valve gear is very simple, requiring no
9| is in communication with a counterbore 93
springs.
forming a hollow skirt. The other or head end of In View of the above, it will be seen that the
the valve is reduced and rounded as indicated at
several objects of the invention are achieved and
9‘2 and forms a follower on the cam portion 31 of
other advantageous results attained.
the crank disc 35. This reduced head also acts _ _ As many changes could be made in the above
as a part of the valve porting. In Fig. 3 a valve
Vconstructions without departing from the scope of
follower 92 is shown on a low portion of the cam
the invention, it is intended that all matter con
31 and in Fig. 4 it is shown on a high portion.
tained in the above description or shown in the
When on a low portion, the groove 8l communi
accompanying drawing shall be interpreted as il
cates with one of the passages B I 'so that fluid may
lustrative and not in a limiting sense.
ilow to or from the passage 61 and to or from the
I claim:
respective cylinder l . When the follower 92 is on
1. In e, reciprocating mechanism a crankcase
- a high part of the cam (Fig. 4), the respective
having a fluid transmitting opening therein, a
port 6I is out of communication with the passage
rotary crank in said crankcase, a cylinder extend
61 and in communication with the counterbore I l
ing from said crankcase, a reciprocating piston
of the crankcase. Each valve is biased by means
therein, a connecting rod between the piston and
of the pressure in the passage 61 against the cam
said crank, means providing a fluid passage to
the cylinder, part of said passage being substan
31. In the case of an engine this is the supply
tially parallel to the axis of rotation of said crank
pressure, and in the case of a pump it is the back
and being in communication with a manifold,
pressure. This feature eliminates springs and
said manifold being adapted for connection to a
the like for valve return.
pressure line, e, reciprocating valve in said par
Assuming the mechanism to be applied as an
allel part of the passage, an exten-sion from said
engine (or motor), pressure'is applied from the
valve, axial cam means rotary with the crank and
pressure line 11. This finds its way through one
‘cooperating with said valve extension to move
of the open valves 19 to the head end of one of
said valve in at least one direction, said valve
the cylinders I. The pistons and the crank disc
being formed alternately to connect said passage
35 are so phased that the corresponding piston
with the manifold and with the inside of the
under such conditions has just over-centered at
crankcase as the piston reciprocates and said
the outer end of its action and is ready for a
crank rotates.
power stroke. This rotates the crank disc and
2. In a reciprocating mechanism a crankcase
after the power stroke has ended, the cam 31
having a ñuid transmitting opening therein, a
pushes back and shuts off the respective valve
rotary crank disc in said crankcase, a cylinder
19. The next valve in order then opens, its pis
ton having over-centered, and proceeds through
a similar action. Each valve, piston and cylin
der proceeds thus in succession. After a power
stroke, a given piston makes a return stroke and
its respective valve at this time is in the Fig.V 4
position which allows its cylinder to exhaust to
the crankcase, from which the fluid ñows through
the opening I1.
'
If the motive power fluid be air, this may go
to waste. If it be a liquid, it may pass to a sump
for subsequent use by being pumped back into the
line 11.
»If the device be used ’asv a pump, then power
applied to the shaft 23’rotates the disc 35 and
causes reciprocation of the pistons 53. As the
pistons reciprocate, the valves move under action
of the cam 31 so that on suction strokes fluid is
drawn in through the opening l1 and on com
pression strokes it is moved out through the
manifold passage.
.
The opening l1 andV passage 61 could be con
nected into a liquid line. For example, in lgaso
line dispensing circuits and the like it might be
desirable to have the pump in a closed liquid
circuit, the extension 33 of shaft 23 acting to
drive an integrating meter or similar registering
device.`
.
v
It will be seen that the principle of operating
the valve from a cam formed as part of a crank
disc'is also applicable to single-cylinder mecha
nisms, except that in such case a ñywheel effect
becomes moreV necessary for substantially con
stant velocity.
With the multi-cylinder radial
extending from said crankcase, a reciprocating
piston therein, a connecting rod between the pis
ton and said crank disc, means providing a ñuid
passage through the cylinder, part of said pas
sage being substantially parallel to the axis of
“ rotation of said crank disc and being in communi
cation with e, manifold, said manifold being
adapted for connection to a pressure line, a
springless reciprocating piston valve in said par
alle1 partof the passage, an extension from said
valve, said' crank disc being formed as an axial
cam cooperating with said extension to move the
valve in one direction, said valve being biased in
the opposite direction toward contact with the
cam by pressure from said manifold, said valve
« being formed alternately to connect said passage
with the manifold and with the crankcase as the
piston reciprocates and said crank disc rotates.
3. In a reciprocating mechanism a crankcase
having a fluid transmitting opening therein, a
rotary crank disc in said crankcase, a cylinder
extending from said crankcase, a reciprocating
piston therein, a connecting rod between the pis
ton and said crank disc, means providing a fluid
passage to the cylinder, part of said passage being
ï substantially parallel to the axis of rotation of
said crank disc and being in communication with
a manifold, said manifold being adapted for con
nection to a pressure line, a reciprocating valve
in said parallel part of the passage, an extension
from said valve, said crank disc being formed on
its side opposite the connecting rod as an axial
cam cooperating 4with said valve extension to
move said valve in at least one direction, said
arrangement not so much flywheel effect is neces
valve being formed alternately to connect said
sary to maintain smooth action. It will also be 75 passage with the manifold and with the inside
2,413,357
5
of the crankcase as the piston reciprocates and
said cam-formed crank disc rotates.
4. In a radial reciprocating mechanism, a
crankcase having a fluid transmitting opening
therein, radial cylinders extending from said
crankcase, reciprocating pistons in the cylinders,
a crank disc in the crankcase, connecting rods
connecting said piston with said crank disc and
located in a plane in front of the disc, means
providing ñuid passages to said cylinders, each
passage having a, cylindrical part parallel to the
6
piston in the cylinder, a crank disc in the case,
a connecting rod between the piston and said
crank disc, means providing a passage leading
from the head end of said cylinder inwardly
toward the axis of rotation of said crank disc
where said passage has a cylindric portion par
allel to said axis of rotation, said parallel portion
being adapted for connection to a pressure line,
a reciprocating cylinder valve in said passage, a
cam formed on the rear of said crank disc, a
reduced follower portion on the Valve engaging
said cam portion, said valve being biased toward
said cam portion by ñuid pressure on its opposite
end, said valve having a port which connects the
passages and located on the outside of the crank
case, said manifold being adapted for connection 15 cylinder only to its pressure end when the valve
is at one end of the stroke, said reduced portion
to a pressure line, reciprocating valves in said
of the valve when the valve is at the other end
passages located between the manifold pas-sage
of its stroke connecting said cylinder with the
and said crank disc, a cam shaped on the back
crankcase.
of said crank disc, said valves having follower
'7. A reciprocating radial mechanism compris
elements contacting said cam, each valve being 20
ing a crankcase having a fluid transmitting open
formed alternately to connect its respective cyl
ing therein and integrally disposed radial cylin
inder passage with said manifold and with the
ders thereon, said crankcase being counterbored
inside of said crankcase.
from one lside to provide a crank compartment,
5. In a radial reciprocating mechanism, a
crankcase haw'ng a fluid transmitting opening 25 reciprocating pistons in the cylinders, a crank disc
in said compartment, a crankshaft supporting
therein, radial cylinders extending from said
said crank disc and having a bearing in the case
crankcase, reciprocating pistons in the cylinders,
beyond the bottom of said compartment, rods
a crank disc in the crankcase, connecting rods
connecting said pistons and said crank disc, said
connecting said piston with said crank disc and
located in front of the disc, one of said rod-s being 30 crank disc on its side toward the bottom of the
counterbore being formed as an axial cam, a cov
nat and the other two having equal offsets but
ered groove on the outside of the crankcase op
located reversely on opposite sides of the flat rod,
posite the bottom of said counterbore and sur
means providing fluid passages to said cylinders,
rounding said crankshaft, said groove being
each passage having a cylindric part parallel to
the axis of rotation of the crank disc, an annular 35 adapted for connection to a pressure line, axial
valve passages connecting said groove and the
iiuid manifold connecting said parallel passages
crankcase, radial connections from said axial
and located on the outside of the crankcase, said
passages to the ends of said cylinders, reciprocat
manifold being adapted for connection to a pres
ing piston valves in said axial valve passages re
sure line, reciprocating valves in said passages
located between the manifold and said crank disc, 40 spectively, each valve having a follower extension
contacting said axial cam and being supported
a cam shaped on the back of said crank disc, said
so that when reciprocated it alternately connects
valves having follower elements contacting said
its piston passage to the peripheral groove and
cam, each valve being formed alternately to con
the crankcase, said valvesbeing subject to pres
nect its respective cylinder passage with said
45 sure in said peripheral groove to be biased toward
manifold and with said crankcase.
engagement with the cam by their follower
6. In a reciprocating mechanism, a crankcase
portions.
having a fluid transmitting opening therein and
VICTOR G. KLEIN.
a cylinder extending therefrom, a reciprocating
axis of rotation of the crank disc and near the
disc, a fluid manifold connecting said parallel
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