Pump Page: 3 of 4
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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787,247
as provided with check-valves, which are
spherical or ball-shaped; but it is to be un-
derstood that we do not limit ourselves to
this particular type of check-valves.
5 The upper end of the pump-casing is pro-
vided with a cap 23, which is screwed de-
tachably on said casing to close the upper
working barrel 11 thereof. This cap is pro-
vided with a central vertical opening 24,
10 through which passes a pitman 25, the latter
being connected at its lower end pivotally to
the apex of the valve-cage 22. The upper
end of this pitman is pivoted to a suitable op-
erating appliance, which is shown in the draw-
'5 inogs in the form of a lever 26, the same being
fulcrumed at a point intermediate of its length
to an offstanding arm or bracket 27, which is
fast to the upper end of the pump-casing.
Any suitable means may be substituted for
20 the lever as a means for reciprocating the con-
nected piston-buckets of our improved
pump.
The upper end of the pump-casing 10 is
provided at a point below the cap 23 with
25 a discharge-spout 28, the same having a suit-
able cock 29 to cut off the flow of water from
the pump.
One of the important features of our in-
vention resides in the employment of the
30 lazy-tongs mechanism 16 between the series
of piston-buckets which are employed for
the elevation of the water. The upper pis-
ton-bucket 14 of the improved pump is pro-
vided at its lower end with a hanger 30, con-
3 5 sisting of a pair of arms arranged in inclined
positions, so as to meet or join one another,
and are firmly secured to the lower end of the
piston-bucket 14 in a way to avoid interfer-
ence to the free ingress of water through the
40 lower valve 18 to said bucket 14. A pitman
31 is attached at its upper end to the apex of
this hanger, and the lower end of this pitman is
connected pivotally to a pair of links 32, the
latter arranged in divergent relation and hav-
45 ing their lower ends pivoted individually to
the upper ends of a pair of crossing levers 33.
These levers are fulcrumed at the middle
thereof on a cross-bolt 34, which is supported
removably in the middle portion of the ex-
50 panded section 13 of the pump-casing, and
said levers are connected at their lower ends
pivotally to another pair of links, 35, which
converge toward their lower ends and are
pivoted at a common point to an arm 36,
55 which is provided on the valve-cage 22 of the
lower piston-bucket 15.
The crossed levers 33 and the two pairs of
links 32 35 constitute the toggle mechanism
which serves as the means for operatively
6o connecting the upper and lower piston-
buckets of the pump, and this toggle mech-
anism is adapted to be expanded or opened
on the downward movement of the upper
piston-bucket 14 for the purpose of raising
65 the lower piston-bucket 15 simultaneouslywith such downward movement of the up-
per piston-bucket, and vice versa. An up-
ward movement of the piston-bucket 14 op-
erates to contract or draw together the mem-
bers of the toggle mechanism for the purpose 7<
of positively forcing the piston-bucket 15 in
a downward direction. It is therefore to be
understood that the power necessary for the
operation of the pump is applied to the up-
per piston-bucket and that the toggle mech- 7
anism transmits the motion of the upper pis-
ton-bucket to the lower piston-bucket in a
manner to move the latter in an opposite di-
rection to and simultaneously with the move-
ment of said upper piston-bucket. 8<
The pump-casing 10 may be extended any
suitable distance below the working barrel or
cylinder 12, or an induction-pipe 37 may be
connected with said lower working barrel,
said induction-pipe being immersed in the 8
water of the well or other source of supply.
A foot-valve 38 of any suitable character
may be provided between the induction-pipe
and the lower working barrel 12, said valve
serving to sustain the weight of the column 9(
of water contained within the pump, and
thereby relieve the strain on the lower piston-
bucket. Below the valve 38 is arranged a
strainer 39, and a similar strainer 40 may be
attached to the lower end of the piston- 9.
bucket 15. A drain-cock 41 is attached to
the lower portion of the pump-casing at a
point above the foot-valve 38, said valve be-
ing operable by any suitable means for the
purpose of draining water from the casing in i
very cold weather, and thereby minimizing
the liabiity of the pump freezing.
In operation the water is supplied to the
lower working barrel by the induction-pipe,
and the upward flow of the water unseats the i
valves 18 21, so as to fill the lower piston-
bucket 15. The upward movement of this
piston-bucket closes the valves 18 21, so as
to lift the water contained within the bucket
and to force upwardly any water in the i
pump-barrel above the valve 21. On the
downstroke of the piston-bucket both of the
valves are unseated, and the water is free to
flow out of the bucket and into the pump-
casing above the piston-bucket. The upper i
piston-bucket has its valves arranged to op-
erate in a like manner for the water con-
tained in the chamber of the expanded cas-
ing-section 13 to enter the barrel and also be
received in the piston-bucket 14 on the down- i:
ward movement thereof. On the upward
movement of this piston-bucket 14 the wa-
ter is discharged into the working barrel 11
of the casing above the piston-bucket 14, so
that on the next upward stroke of this bucket z:
14 the water is ejected from the pump through
the discharge-spout 28.
In Fig. 4 is shown the preferred manner of
extending the pipe or casing to any desired
height. The lever 26 is disengaged from the r;
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Reference the current page of this Patent.
Wilson, Frank Robertson & Mansell, George. Pump, patent, April 11, 1905; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth510289/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.