Double Acting Cylinder Pump Page: 2 of 3
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UNITED
STATES
PATENT OFFICE.
HENRY B. ARNOLD, OF MIDLAND, TEXAS, ASSIGNOR OF ONE-ITALF TO
MARTIN L. TAUL, OF SAME PLACE.
DOUBLE-ACTING CYLINDER-PUMP.
SPECIFICATION forming part of Letters Patent No. 684,740, dated October 15, 1901.
Application filed June 6, 1900. Serial No.19,275, (No model.)To all w7uomir zt mcty concern:
Be it known that IHENRY B.ARNOLD,a citi-
zen of the United States, residing at Midland,
in the county of Midland and State of Texas,
5 have invented new and useful Improvements
in Double-Acting Cylinder-Pumps, of which
the following is a specification.
My invention relates to double-acting cyl-
inder-pumps, my purpose being to organize a
to pump of this type in such a manner that it
shall be capable of continuous operation and
of furnishing a continuous stream of water
even after a part of its mechanism is disabled.
It is another object of my invention to pro-
15 vide a pump which can be operated with the
least possible expenditure of labor, the cylin-
ders of which shall at all times be completely
filled with waterboth above and below the solid
plunger or piston-head in the main cylinder
20 and in the auxiliary cylinder or eduction and
induction chambers and to reduce the area of
the check-valves which control the inflow and
outflow to and from the latter, whereby the
pressure upon said checks will be largely re-
25 d uced,enabling them to be unseated or opened
with less effort and diminishing the liability
of their sticking or refusing to open unless a
largely-increased pressure is brought to bear.
It is my aim also to provide a double-acting
30 cylinder-pump the reciprocating plunger or
piston of which will be operated by a substan-
tially uniform force at every point of both its
upward and downward movements, the power
required for its practical operation being
35 materially reduced as compared with other
pumps ot the same class and equal capacity.
I provide,moreover, a pump which will deliver
a greater volume of water in a given time and
with less expenditure of motive power than
40 other pumps of the same type and equal di-
mensions of cylinders.
My invention also comprises other novel
and useful features, and I will now proceed to
explain its construction and operation, the
45 novel points being afterward particularly
pointed out and defined in the claims at the
end of this specification.
For the purposes of the following descrip-
tion reference will be made to the accompa-
5o nying drawings, in which--
Figure 1 is a plan view of a double-actingcylinder - pump constructed in accordance
with my invention. Fig. 2 is a longitudinal
section upon the line 2 2 in Fig. 1. Fig. 3 is
a similar section taken on the line 3 3 in said 55
Fig. 1. Fig. 4 is a transverse section of the
same upon the line 4 4 in Fig. 2.
The reference-numeral 1 in said drawings
indicates the main or body portion of the
pump, which is of cylindical form and of any 60
required dimensions. It consists of an inte-
rior or main cylinder 2, having at its top an
outlet - valve casing 2' of greater diameter
provided with a stop-plate 3' and communi-
cating with the interior of the cylinder 2 by 65
means of the outlet 4' therefor. The lower
end of the cylinder is formed with an inlet
5' and a suitable distance above the same with
a stop-plate 6', which is arranged in such a
manner as to form the passages 7', the central 70
portion thereof constituting a valve-stop.
The reference-numeral 3 denotes the exte-
rior cylinder concentric with the main cylin-
der, but of a much greater diameter, so that
the annular space between the two cylinders 75
is divided into four quadrantal spaces or educ-
tion and induction chambers 4 4 and 5 5, re-
spectively, of equal capacity. These cham-
bers are separated from each other by parti-
tions 6, which lie substantially in line with 8o
the radii of the two cylinders.
The interior or main cylinder 2 is provided
with a solid plunger or piston-head 7, recip-
rocated therein by a piston-rod 8, which can
be operated by any motive power preferred 85
or by hand. The valve-casing 2' has arranged
therein a check - valve 9, provided with a
sleeve 9' and a centrally-arranged opening to
permit of the same being mounted upon the
piston-rod 8, the vertical movement of the 90
valve 9 being limited by means of the stop 3'.
The lower end of the cylinder 2 has suitably
arranged therein a globular check-valve 10,
the vertical movement thereof being limited
by means of stop-plate 6'. The inner cylin- 95
der 2 is also provided with two openings 12
at one end and at the other end with two
openings 13, the latter being upon opposite
sides of the cylinder, while the ports or open-
ings 12 are also formed in the opposite sides ioo
of the inner cylinder, but alternating with
the openings 13. The openings 12 at the
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Arnold, Henry B. Double Acting Cylinder Pump, patent, October 15, 1901; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512149/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.