Counterbalancing Device for Pumps. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
CHARLES KAVENDOR COTTEN, OF SAN ANGELO, TEXAS.
COUNTERBALANCING DEVICE FOR PUMPS.
Specification of Letters Patent.
Patented March 9, 1909.
Application filed August 24, 1908. Serial No. 449,967.
To all whom it may concern:
Be it known that I, CHARLES K. COTTEN,
a citizen of the United States, residing at San
Angelo, in the county of Toni Green and
5 State of Texas, have invented certain new
and useful Improvements in Counterbalanc-
ing Devices for Pumps, of which the follow-
ing is a specification, reference being had to
the accompanying drawings.
io This invention relates to improvements in
counterbalancing attachments for pumps
and more particularly those operated by
The object of the invention is to provide
15 a device of this character which will be sim-
ple and practical in construction, easy to ap-
ply to any pump and effective in operation;
and to further provide a device of this char-
acter which will exert a perpendicular pull+
20 on the pump rod and prevent lateral strain
With the above and other objects in view,
the invention consists of the novel features of
construction and the combination and ar-
25 rangement of parts hereinafter fully de-
scribed and claimed, and illustrated in ithe
accompanying drawings, in which-
Figure 1 is a side view of a wind mill oper-
ated pump having the invention applied
30 thereto; Fig. 2 is a plan view of the attach-
ment removed from the pump; Fig. 3 is a
detail cross section through one of the
weights and the arm or lever which carries
it; and Fig. 4 is a detail vertical sectionI
35 taken on the line 4-4 in Fig. 1.
In the drawings 1 denotes the pump cas-
ing, 2 the piston rod of the pump, 3 the wind
mill operating rod which is connected to the
rod 2 and 4 the improved counterbalancing
40 attachment which comprises upper and
lower clamps 5, 6, two weighted levers 7 and
two supporting links 8. The lower clamp 6
is applied to the pump casing and consists of
two metal straps opposed to each other and
45 their central portions curved outwardly in
opposite directions to engage the pump cas-
ing and their spaced ends united by inner and
outer clamping bolts 10, 11. The outermost
bolts 11 also serve as fulcrum pins for the
5o lower ends of the links 8 each of which latter
consists of two metal straps spaced apart ad-
jacent their centers by a spacing sleeve 12
and a bolt or rivet 13. The lower ends of the
straps of the links 8 are brought together and
55 arranged between the ends of the clamp.
straps 6 and they are also preferably fastened
together by a rivet 14. The upper ends of the
straps of said links 8 receive the weighted
levers or arms 7 between them and they are
pivotally united to the latter by bolts 15.
The upper clamp 5, which is similar to the
lower one, is arranged upon the operating rod
3 and it consists of two straps having their
central portions curved outwardly to receive
the rod 3 and their spaced ends united by
inner and outer bolts 16, 17. If desired, a
I bolt 18a may be passed through the central
parts of the clamp straps 5 and through the
rod 3 to more effectively unite said parts and
prevent all possibility of the clamp slipping
upon the operating rod. The outer bolts 17
also serve to pivotally unite the inner ends of
the levers 7 to the clamp 5. Each of said
levers is composed of two metal straps, the
upper ends of which are brought together and
between the straps of the clamp 5 and the
link 8 and united by the bolts 15, 17 and the
outer ends of which are disposed in parallel
relation to slidably receive a weight 18 be-
tween them. The weights 18 are here shown
in the form of rectangular blocks having their
opposite side faces grooved, as at 19, to re-
ceive the straps of the levers; and they are
adapted to be held in an adjusted position
upon the latter by clamping bolts 20, 21
which pass through the straps of said levers.
It will be seen that when the bolts 20, 21 are
loosened the weight blocks 18 may be moved
inwardly or outwardly upon the levers ac-
cording to the size of the pump and the well
which the invention is applied to.
It will be understood that the weights may
be constructed and adjusted in other ways
than that mentioned and that the several
parts of the attachment may be of other
shape and construction, but they are prefer-
ably made of metal straps, bolts and rivets,
as shown and described because they may be
produced at a small cost and will be easy to
apply to different sizes and makes of pumps.
In operation, it will be seen that when the
pump rod 3 moves downwardly the weights on
the levers 7 will be lifted and that when said
pump rod moves upwardly to lift the water
the weights will descend. Said weights
therefore assist in elevating the water and
put a load upon the rod upon its down stroke,
thereby counterbalancing the weight of the
water and equalizing the strain upon the
wind mill. It will be seen that the pump rod
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Cotten, Charles Kavendor. Counterbalancing Device for Pumps., patent, March 9, 1909; [Washington D.C.]. (texashistory.unt.edu/ark:/67531/metapth510150/m1/2/: accessed September 21, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.