Compensating Pump-Spring. Page: 2 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE
WILLIAM L. BLACK, OF FORT McKAVETT, TEXAS.
COMPENSATING PUMP-SPRING.
SPECIFICATION forming part of Letters Patent No. 450,657, dated April 21, 1891.
Application filed June 6, 1890. Serial No. 354,519. (No model.)To all wao it 77m aay concern':
Be it known that I, WILLIAMI L. BLACK, a
citizen of the United States, residing at Fort
McKavett, in the county of Menard and State
5 of Texas, have invented certain new and use-
ful Improvements in Compensating Pump-
Springs; and I do hereby declare the following
to be a full, clear, and exact description of the
invention, such as will enable others skilled
no in the art to which it appertains to make and
use the same.
My invention relates in general to pumps,
and in particular to that class wherein the
suction-rod is operated by some overhead
15 power-as, for example, a wind-wheel. In
this class of pumps the shaft of the wind-
wheel is usually provided with an ordinary
crank which is linked to the upper end of
the suction-rod. As in all lift-pumps, the
20o work to be done is thrown on the upward
stroke of the suction-rod, its return or down
stroke being accomplished with a relatively
small expenditure of power. This results in
throwing upon the operating-crank during
25 one-half of its revolution a strain equal to
the force required to lift the water as well as
the weight of the rod and its connected parts,
whereas in the opposite half of its revolution
the crank has little or no work to perform,
30 the weight of the rod and its connections as-
sisting materially in restoring it to its initial
position.
The object of my invention is to provide a
cheap, simple, and effective means to over-
35 come the unequal and jerking strains thus
imposed on the machinery by storing up in
the downward or idle stroke of the suction-
rod a power which is expended during the
upward stroke to assist the crank in lifting
40 the rod with the result of reducing the power
required to drive the pump, equalizing the
resistance, increasing the efficiency, and gen-
erally prolonging the life of the entire mech-
anism.
45 A further object is to guide and steady the
suction-rod and brace and stiffen the trestle.
To these ends the invention consists in the
construction and arrangement of parts here-
inafter shown and described.
50 In the accompanying drawings, Figure 1 is
a perspective view of a windmill-pump with
my invention applied. Fig. 2 is a horizontalsection through the sleeve, and Fig. 3 is a ver-
tical section through a part of the frame and
sleeve. 55
The same numerals indicate similar parts
in the several views.
1 1 denote the four corner-uprights of the
frame-work or derrick, which uprights are
either planted in the ground or rise from a 6o
suitable base 2, as shown, In the top of this
frame-work is suitably journaled the shaft 3
of the wind-wheel 4.
5 denotes the suction-rod link connected at
its upper end with the crank of the wind- 65
wheel shaft.
G indicates the pump.
So far the construction and arrangement
of parts are those commonly employed in this
class of devices and need no further descrip- 70
tion.
To apply my invention to such a pump, I
secure at any suitable point in the length of
the uprights four braces 7, forming a square
or rectangular frame and steadying and 75
strengthening the derrick. To each of these
braces I attach by any suitable means-such
as bolts and nuts S-a heavy leaf-spring 9,
the four springs converging to the center,
where they are adjustably connected to the So
suction-rod 5 by means presently to be de-
scribed. These springs are of any preferred
form or construction, and to provide for their
being adjusted in and out toward and from
the rod I make them with two or more holes 85
16 at their butt-ends, into any one of which
the bolts 8 may be set. At its opposite end
each spring is provided with a short pivoted
link 10.
11 indicates a ferrule or sleeve circular or 90
rectangular in cross-section (depending upon
the shape of the suction-rod) and elongated,
as shown in Fig. 1, or narrow, as in Fig. 3.
When of the form seen in Fig. 1, it is rigidly
fixed upon the suction-rod, and is provided 95
with a series of slots or holes 12 for the ad-
justable connection therewith of the links 10
on the inner ends of the springs. When short
or narrow, as in Fig. 3, the connection of the
linktherewith is not adjustable; but the sleeve ioc
itself is adjustable on the rod instead of be-
ing fixed, as in the other case.
13 denote screw-eyes or eyebolts by means
of which the pivoted links 10 are connected
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Black, William L. Compensating Pump-Spring., patent, April 21, 1891; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172672/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.