Wood Rod Elevator Page: 3 of 5
[2], 3 p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATESPATENT OFFICE.
GEORGE F. DAVIS, OF OZONA, TEXAS.
WOOD-ROD ELEVATOR.Specification of Letters Patent.
Patented July 27,1920.
Application filed March 8, 1920. Serial No. 364,237.
To all whom it may concern:
Be it known that I, GEORGE F. DAVIS, a
citizen of the United States, residing at
Ozona, in the county of Crockett and State
5 of Texas, have invented a new and useful
Wood-Rod Elevator, of which the following
is a specification.
This invention relates to oil well pumps,
and more particularly to devices employed
1o for lifting the sucker rods thereof.
The primary object of the invention is to
provide a rod lifter which may be secured to
one end of the rod being lifted, the lifter
having means to prevent rotation of the
15 lifter with relation to the rod under oper-
ation, during the lifting thereof.
A further object of the invention is to
provide means for locking the jaws in their
gripping positions, the locking means being
20 such as may be readily and easily thrown
out of operation to quickly release the rod
after the same has been lifted.
With the foregoing and other objects in
view which will appear as the description
25 proceeds, the invention resides in the com-
bination and arrangement of parts and in
the details of construction hereinafter de-
scribed and claimed, it being understood
that changes in the precise embodiment of
so the invention herein disclosed, may be made
within the scope of what is claimed, with-
out departing from the spirit of the inven-
tion.
Referring to the drawings
35 Figure 1 illustrates a side elevational view
of a rod lifter constructed in accordance
with the present invention;
Fig. 2 illustrates a longitudinal sectional
view of the lifter;
40 Fig. 3 illustrates a transverse sectional
view taken on line 3-3 of Fig. 2; and
Fig. 4 illustrates a fragmental front ele-
vational view, a portion of the locking
means being broken away.
45 Referring to the drawings in detail, the
reference character 5 designates the head
of the lifter which is provided with a re-
duced portion to accommodate the connect-
ing link 6, a portion of the head 5 being
50 turned downwardly to engage the link 6
to prevent displacement of the link 6, but
at the same time permit of free rotary move-
ment of the link 6 with relation to the
head 5.
.55 A depending shank 7 forms a part of the
head 5, and extends downwardly where thesame is clamped between the plates 8 and
9 which provide a support for the jaws
proper, there being an opening provided in
each of the plates 8 and 9 for accommodat- 60
ing the bolt 10, which passes through these
openings and through a registering opening
in theshank 7, whereby the shank is se-
cured to these plates 8 and 9.
A stationary jaw 11 has its upper ex- 65
treinity disposed between the plates 8 and 9
and secured thereto by means of the pins
12 and 13, the lower extremity of said jaw
being curved as at 14 to provide the jaw
proper. A portion of the jaw 11 extends lat- 70
erally as at 15, and has connection with the
pin 16, whereby the lower portion of the
jaw 11 is secured against displacement.
A pivoted jaw 17 cooperates with the
jaw 11 to accomplish the gripping of the 75
rod under operation, and as shown, this piv-
oted jaw 17 has its upper extremity piv-
otally connected between the plates 8 and
9 by means of the bolt 18 passing through
the plates, the lower extremity of said jaw 80
17 being curved as at 19 in a manner corre-
sponding to the curvature of the stationary
jaw 11, so that when the jaws proper are
brought together, the same will properly
fit around the rod to be removed. 85
Forming a part of the lifter, is a lower
frame, which includes the spaced bars 20,
which bars are connected by means of the
pins 16 and 21, the pin 16, as before stated
forming the support for the lateral exten- 90
sion 15 of the jaw 11, while the pin 21 is
formed integral with the locking arm 22,
a portion of the locking arm 22 extending
laterally therefrom, and formed into the
spaced bearings 23, in which bearings is sup- 95
ported the pin 24, which pin 24 also has
connection with the movable jaw 17
through the laterally extending portion 25
of the pivoted jaw 17, in such a way that
-movement of the locking arm 22 will move 10
the jaw 17 toward and away from the sta-
tionary jaw 11 to accomplish the clamping
result.
The upper extremity of the locking arm
22, extends inwardly toward the head 5 and 10
is provided with a cut out portion 26 formed
adjacent the upper end of the arm, at the
forward portion thereof, which cut out por-
tion provides a seat for the pivoted latch
member 27, which is pivotally supported be- 11
tween the plates 8 and Q. the T-shaped head
28 thereof, normally lying in the cut out1,347,535.
0
5
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Davis, George F. Wood Rod Elevator, patent, July 27, 1920; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258147/m1/3/: accessed June 19, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.