Improvements in Pumps and Blowers.
Year: 1894

page_text: Date of Application, 13th Mar., 1894-Accepted, 25th May, 1894
COMPLETE SPECIFICATION.
Improvements in Pumps and Blowers.
I, CHARLES RUMLEY, of 303 Rodney Street Helena, in the County of Lewis
and Clarke, and State of Montana, United States of America, Melter, United
States Assay Office, do hereby declare the nature of my invention, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
My invention relates to Improvements in Pumps and Blowers; and the object
of my invention is to produce a pump of extreme cheapness and simplicity, which
is very powerful in proportion to its size, which is composed of few parts, which
therefore is not likely to get out of repair, which has these parts arranged in such
a manner that they do not wear rapidly, which is adapted to pump either water or
air and to pump the same very rapidly, and which, if desired, may be used as a
blower to force a comparatively large volume of air into any desired quarter.
A further object of my invention is to construct the pump so that it may be
worked in either direction, that is, that its ports may be used alternately as suction
or discharge ports according to the direction of the movement of the pump piston,
and also to provide an improved cut-off which, in connection with the pump valve,
serves to prevent leakage and increases the efficiency of the pump.
To these ends my invention consists of certain features of construction and.
combinations of parts, which will be hereinafter described and claimed.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar figures of reference indicate corresponding parts in
all the views.
Figure is a central vertical section on the line 1-1 of Figure 4, of the pump
embodying my invention;
Figure 2 is a similar view, but with the pump piston and valve in an advanced
position, the valve being open to permit the pump to discharge;
Figure 3 is a similar view, but with the piston shown in still another position
with the cut-off covering the joint between the valve and the edge of the cylinder
or case;
Figure 4 is a sectional plan on the line 4-4 of Figure 3 ;
Figure 5 is a central vertical section of a modified form of pump, showing the
discharge port open;
Figure 6 is a central vertical section on the line 6-6 of Figure 7;
Figure 7 is a section similar to that shown in Figure 5, but with the piston and
valve arranged to close both inlet and discharge ports;
Figure 8 is a vertical section on the line 8-8 of Figure 5;
Figure 9 is a central vertical section on the line 9-9 of Figure 11, illustrating
another modification of my device which adapts it for use as a blower, the blower
being shown with both inlet and discharge ports open;
Figure 10 is a similar section, but with the piston and valve in a more advanced
position so as to close the ports of the case; and
Figure 11 is a sectional plan on the line 11-11 of Figure 9.
Referring to Figures 1 to 4 the pump is provided with a suitable cylindrical
case 10 which is open at the bottom and which is mounted on a hollow post 11, this
having preferably a base flange 12 to give it a stable bearing, and in the base are
ports 13 and 14 adapted to be used respectively for suction and discharge ports,
although their functions may be reversed in case the piston is reversed. The ports
are separated by an inclined partition 15, in connection with the pump valve, which
will be hereinafter described.
:
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page_text: Extending longitudinally through the cylindrical portion of the case is a crank
shaft 16, the crank of which extends the full length of the case, and the shaft may
be driven as illustrated in Figures 6 and 11 and hereinafter described. The crank
of the shaft carries a piston 17 having depressed ends to provide for the crank, as
shown in Figure 6 and described hereinafter; and the piston is adapted to travel
next the wall of the cylinder or case and around the centre thereof, as illustrated in
Figures 1 to 3.
•
Journalled in one side of the piston, as shown at 18, is a valve 19, one end of
which is solid so as to close the discharge port 14 and the valve is provided with a
slide 20 which moves on a packing 21 in the edge of the partition 15, so as to make
a water-tight joint at said point. The valve extends the full length of the case
and has, above the inlet port, arms 22, which are secured to, a.shaft 23 which is
fulcrumed at one edge of the opening in the cylinder, as shown at 24, and the space
between the arm's provides for the free passage of water or air, as the case may be.
On one side of the cylinder is a spur cut-off 25, which is adapted to close over the
joints at the points 23, 24, and in order that the cut-off may have the required
movement, the arms 22 are curved downward to form a recess to receive it, as
illustrated in Figure 3.
It will be seen that, supposing the piston to be in the position shown in Figure 1
and turning in the direction of the arrow, it will follow the wall of the case and
cause the valve 19 to swing upward so as to open the port 14 while the water in
front of the piston, which has been drawn in at a previous revolution, will be
expelled through the port and, during this movement, the water will be drawn
through the port 13 and between the arms 22, as illustrated in Figure 2. As the
piston continues to advance, it closes the discharge port, the spur 25 closing over
the joint of the valve, as shown in Figure 3, and at each revolution the above
described action takes place, the water flowing in at one side of the piston and
valve and being expelled from the other side, while the partition 15, the valve
with its slide 20 and the piston prevent the water or air on the two sides of the
pump from communicating.
i
As shown in Figures 5 to 8, the pump cylinder or case 10* is provided with a
suitable base 26 with an inlet port 27 at the bottom of the case and with a
discharge port 28 at the top.
The crank shaft 16 is used as already described, and is provided at its ends with
a pulley 16 and a gear wheel 16b, so that if necessary or desirable power may be
applied to both ends of the shaft. The crank shaft 16 carries a piston 29, substan-
tially like the piston 17 already described, and working in the same way, the ends
of the piston being depressed as shown at 30, to provide for the sides or ends of the
crank, but the piston 29'is flattened on one side, as shown at 31, in order that it
may snugly fit the oscillating valve 32 in the case, as shown clearly in Figure 7.
The valve 32 is solid at its upper end and extends entirely across the case, the
valve being adapted to close, the discharge port, as shown in Figure 7, and at its
upper end it is journalled, as shown at 33, in the piston 29, which, at this point is
thickened to give it the necessary strength, and the lower portion of the valve
extends downward opposite the discharge port 27, being widened at the bottom, as
illustrated at 34, which enables it to close the space between the bottom of the
cylinder or case, and the piston, but this lower end of the valve is provided with a
wide port 35 through which water or air may pass.
In the top of the cylinder or case 10 is an oil cup 36 which is adapted to deliver
upon the joint 33, the oil dripping through and dropping upon said joint. When
the piston 29, rotates in the direction of the arrow in Figure 5, the water or air
flows upward through, the port 27 and the port 35 of the valve, while the water or
air in front of the piston, which has been brought in at a previous revolution of
the piston, is expelled through the port 28. As the piston moves it draws in the
water through the port 27 until finally, the piston closes against the valve 32, as
shown in Figure 7; thus closing both inlet and discharge, ports, but at this point
the cylinder or case is full and the continued movement of the piston opens the
4.1.

page_text: discharge port as well as the inlet port and drives out the water or air in front of
the piston.
As illustrated in Figures 9 to 11 the device is intended for use as a blower and
as shown here the cylinder 10° is mounted on a suitable base 36 and has, at its
opposite ends, ports 37 to admit air, while at the top is a port 38 through which
the air is discharged.
The blower is provided with a crank shaft 16 operated as already described, and
with a piston 17 like the one shown in Figures 1 to 3, except that the spur is not
used; and journalled to the piston, as shown at 39, so as to swing between the
inlet and discharge ports, is a valve 39, which is solid so that no air can pass
through it and which extends entirely across the cylinder or case, the valve being
curved upward to enable it to hug the wall of the case closely, as shown in
Figure 10, and having its outer and thickened end journalled, as shown at 40, in an
offset 41 of the case, this offset being made so as to permit the rotation of the
piston.
The blower works substantially like the pump already described. Thus when
the piston is in the position shown in Figure 9 the inlet ports are open and so is
the discharge port, while the valve 39 extends between the inlet and discharge
ports, and if the piston is moved forward in the direction of the arrow, it expels
the air in front of it through the port 38 and then closes the discharge and inlet
ports, as shown in Figure 2, while its further movement repeats the operation just
described, driving out the newly admitted air and permitting the fresh air to enter.
It will be observed that in the several forms of the apparatus very few parts are
used, and that the movements are very simple and positive, so that the device is
very efficient in its operation.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,-
1. A rotary pump, comprising a cylinder having inlet and discharge ports, an
oscillating valve fulcrumed on the cylinder and adapted to swing opposite the inlet
and discharge ports, the said valve being composed of an imperforate upper portion
and an apertured or ported lower portion, and a revoluble piston held to turn
eccentrically in the cylinder, the piston being pivoted to one end of the valve,
substantially as described.
2. A rotary pump, comprising a cylinder having suitable inlet and discharge
ports, an oscillating valve fulcrumed in the cylinder between the ports so as to
swing opposite the same, the valve having a port which is opposite and open to
the inlet port, and a revoluble piston at one end of the valve adapted to follow the
wall of the cylinder and fit against the inner face of the valve, substantially as
described.
3. A pump, comprising a cylinder having an inlet and discharge port separated
by a partition, a rotating piston in the cylinder, and a valve pivoted to the piston
and to the cylinder at the edge of one of the ports, the valve having a slide thereon
to move over the partition and openings therein near the end which is pivoted to
the cylinder, substantially as described.
4. A pump, comprising a cylinder having an inlet and discharge port therein, a
rotary piston held to travel around within the cylinder, and a valve pivoted to the
piston and to the cylinder at the edge of one of the ports, the valve having an
imperforate end opposite one port and a ported or open end opposite the other port,
substantially as described.
5. The combination, with the pump cylinder having the inlet and discharge ports
therein, of the rotating piston, the valve pivoted to the piston and to the cylinder
so as to oscillate opposite the ports, and the cut-off on the piston adapted to move
opposite one end of the valve, substantially as described.
6. A pump, comprising a cylinder mounted on a hollow base and opening into
the same, inlet and discharge ports separated by partitions in the base, a rotating

page_text: piston in the cylinder, a valve pivoted to the cylinder at the edge of one port,
and connected to the piston at its other end, the valve being solid at one end
and comprising a series of arms on the other end, and a cut-off on the piston
adapted to move opposite the arm and cover the joint of the valve, substantially as
described.
7. The herein-described pump and blower, comprising a cylindrical case having
suitable inlet and discharge ports, a piston arranged to turn within the case, and a
valve extending longitudinally through the case between the inlet and discharge
ports, the valve having one end pivoted to the piston and the other end to the case,
substantially as described.
8. The combination, with the case having suitable inlet and discharge ports and
au offset on one side, of the piston held to turn within the case, and a valve.
arranged between the inlet and discharge ports and extending longitudinally
through the case, the valve having one end pivoted to the piston and the other in
the offset of the case, substantially as described.
9. The herein-described pump and blower, comprising a cylindrical case
having suitable inlet and discharge ports and an offset on one side, a crank shaft
journalled in the case, a piston carried by the crank shaft and arranged to revolve
in the case, and a curved valve arranged between the inlet and discharge ports
and extending longitudinally through the case, the valve having one end pivoted
to the piston and the other end in the offset of the case, substantially as
described.
Dated thi
By A. M. & Wm. Clark,
C. RUMLEY,
53, Chancery Lane, London, Chartered Patent Agents.