Pump-Operated Device Page: 2 of 2
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UNITED
STATES
PATENT OFFICE.
CHARLES BUCHANAN CRAWFORD, OF HUNTER, TEXAS.
PUMP-OPERATING DEVICE.
SPECIFICATION forming part of Letters Patent No. 675,267, dated May 28, 1901.
Application filedTebruary 25, 1901. Serial No. 48,839. (No model.)To all whom tmay concern:
Be it known that I, CHARLES BUCHANAN
CRAWFORD, a citizen of the United States,
residing at Hunter, in the county of Comal
5 and State of Texas, have invented a new and
useful Pump-Operating Device, of which the
following is a specification.
This invention relates to pump-operating
mechanisms; and it has for its object to pro-
io vide, in combination with a pump-operating
crank-shaft and a walking-beam operatively
connected with the pump-rod, means for pre-
venting sudden movements of the pump-rod
at the ends of its strokes and for assisting in
15 starting the rod in its reciprocations.
In the drawing forming a portion of this
specification there is shown a perspective view
of the apparatus connected with a pump.
Referring now to the drawing, 5 represents
20 a pump of common form and having a rod 6,
to which is connected one end of a walking-
beam 7, which in the present instance is shown
as rockingly mounted upon a shaft 8 at the
upper ends of uprights 9 and 10, which are
25 erected adjacent to the well in which the pump
is placed. If a windmill is connected for ac-
tuating the pump at times, this walking-beam
may of course be supported by the tower of
the mill.
30 Beneath the outer end of the walking-beam
are disposed horizontal and parallel guides 11
and 12,forming a slideway for two cross-heads
13 and 14, and midway of the ends of the
guides is rotatably mounted a crank-shaft
35 15, the crank of which operates between the
guides.
From the adjacent end of the walking-beam
there depends a connecting-rod 16, having a
bearing 17 at its lower end, in which is re-
40 ceived the crank of the shaft 15, and the crank-
shaft is adapted for attachment thereto of the
tumbling-rod of a horse-power or any other
means for rotating it.
Passed laterally through the connecting-rod
45 16 at a point above its connection with the
crank-shaft is a pin 18, and on this pin are
pivoted the ends of connecting-rods 19 and
20, which are connected at their outer ends
with the cross-heads, so that as the connect-
5o ing-rod 16 moves downwardly the cross-heads
will be moved in one direction, and when said
rod is moved upwardly said heads will be
moved in an opposite direction, owing to the
crank motion given to the end of the connect-
55 ing-rod 16 by the crank.In the operation of a pump the maximum
energy is required in starting the strokes,
which of course in the present construction
are at the time the crank first moves down
and when it starts up. With the present con- 6o
struction and arrangement the momentum
of the cross-heads is such that they move the
crank laterally, thus urging it upwardly or
downwardly, as the case may be, and assist
in starting the strokes after the manner of a 65
fly-wheel. With this arrangement, however,
the momentum of the cross-heads is greatest
at the time needed, for the reason that they
are traveling at their maximum speeds, while
when the cross-heads start back from either 70
end of their movement the crank is moving
upwardly or downwardly and the pump-rod
is at the middle of its stroke and does not re-
quire the assistance of the momentum of the
cross-heads. 75
What is claimed is-
1. The combination with a crank-shaft and
a walking-beam connected therewith for op-
eration thereby, of a body slidably disposed
for movement in a plane at an angle to the 8o
plane including the crank when the walking-
beam is at one limit of its movement and con-
nected between the walking-beam and crank.
2. The combination with a walking-beam
and a crank-shaft having a connecting-rod 85
operatively connecting them, of a guideway
disposed at an angle to a line connecting the
axis of the shaft with the connected end of the
walking-beam, cross-heads slidably mounted
upon the guideway at opposite sides of the 90
shaft, and connections between the cross-
heads and the connecting-rod.
3. The combination with a pump and the
rod thereof,of a walking-beam connected with
the rod, a crank - shaft connected with the 95
walking - beam for operating it, guideways,
and cross-heads slidably mounted upon the
guideways for movement in a plane at an an-
gle to the line connecting the axis of the shaft
with the point of connection of the walking- 100
beam, and connected between the shaft and
walking-beam.
In testimony that I claim the foregoing as
my own I have hereto affixed my signature in
the presence of two witnesses.
CHARLES BUCHANAN CRAWFORD.
Witnesses:
CHASE. CONRADS,
EDWIN WALLHOEFER.
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Reference the current page of this Patent.
Crawford, Charles Buchanan. Pump-Operated Device, patent, May 28, 1901; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511717/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.