Lifting Device. Page: 3 of 5
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UNITED STATES PATENT OFFICE.
OLE T. JENSEN, OF WEATHERFORD, TEXAS.
LIFTING DEVICE.
SPECIFICATION forming part of Letters Patent No. 567,681, dated September 15, 1896.
Application filed January 31, 1896. Serial No. 577,588. (No model,)To ,ll wloni in ( concern:
Be it known that I, OLE T. JENSEN, a citi-
zen of the United States, residing at Weather-
ford, in the county of Parker and State of
5 Texas, have invented a new and useful Lift-
ing Device, of which the following is a speci-
fication.
My invention relates to lifting devices, and
particularly to the mechanism adapted for
.o use as a stump-puller and for elevating heavy
weights, the object in view being to provide
a simple and efficient construction and ar-
rangement of parts whereby sufficient power
for elevating heavy weights may be commu-
15 nicated to a rotary shaft or drum, and where-
by the means communicating motion to the
drum may be moved out of operative position
and a brake simultaneously applied in order
to relieve the operating -lever from strain
20 when the mechanism is at rest.
Further objects and advantages of this in-
vention will appear in the following descrip-
tion, and the novel features thereof will be
particularly pointed out in the appended
25 claims.
In the drawings, Figure 1 is a perspective
view of a lifting device embodying my inven-
tion, the parts being shown in operative po-
sition. Fig. 2 is a longitudinal section of the
30 same, showing the pawls thrown out of opera-
tive relation with the ratchet-teeth of the
driving-wheel. Fig. 3 is a transverse section
taken in a plane indicated by the line 3 3 of
Fig. 2.
35 Similar numerals of reference indicate cor-
responding parts in all the figures of the draw-
ings.
The combined supporting-frame and truck
comprises side bars 1, connected at their front
40 and rear ends by cross-bars 2 and 3 and at an
intermediate point by a cross-bar 4, and de-
pending from the side bars contiguous to
their front ends are front and rear legs or
standards 5 and 6, upon the latter of which
45 are mounted supporting-wheels 7. The front
and rear legs or standards at each side of the
frame are connected by longitudinal braces
8 and the bracket-braces 9, and said legs or
standards are further connected in pairs by
5o transverse braces 10, which are detachable
at one end to provide for their disconnection
to allow the frame to be arranged over astump or other object to be elevated when
such object is of too great a height to pass
under said braces. After the frame has been 55
arranged in the proper position for elevating
the object, said braces may be returned to
their normal positions, as shown in Fig. 1.
In the construction illustrated the braces 10
consist of metallic rods, which are connected 6c
by interlocking eyes 11 to the legs or standards
at one side of the frame and are hook-shaped
at the other end to engage staples or keepers
12 upon the legs or standards at the other
side of the frame. A handle-bar 13 is sup- 65
ported by hangers 14 from the rear side of
the frame to enable the operator to move the
machine from place to place, as required.
Mounted in longitudinally-alined guides 15
upon the cross-bars 2 and 4 is a slide 16, which 70
is longitudinally slotted, as shown at 17, to
allow movement of the slide without inter-
ference with a peripherally-ratchet-toothed
driving-wheel 18, secured to the center of a
transverse shaft or drum 10, said shaft or 75
drum being mounted in bearings 20 on the
side bars of the frame. Fixed to the shaft
or drum upon one side of the plane of the
driving-wheel is a spool 21, adapted for rais-
ing objects of small or medium weight, a ca- 80
ble 22 being attached thereto, and secured at
one end to the shaft or drum upon the other
side of the plane of the operating-wheel is a
lifting-chain 23, at a point between parallel
guide-plates 24, arranged, respectively, upon 85
the contiguous side bar of the frame and an
auxiliary bar 25, which is parallel with said
side bar.
Mounted on a bracket 26, projecting for-
wardly from the cross-bar 3, is an operating 90
or hand lever 27, the upper end of which is
connected with the rear end of the sliding
plate by means of a pitman 28, whereby re-
ciprocatory moveinent of the plate may be
produced by oscillation of the operating-le- 95
ver. Pivotally mounted upon the sliding
plate at its opposite extremities and arranged,
respectively, above and below the plane of
said plate are the operating-pawls 29 and 30,
the same being longitudinally slotted to form oo
parallel guide-arms 29 and 301, which are
arranged, respectively, upon opposite sides
of the plane of the operating-wheel to prevent
lateral displacement of the engaging extremi-
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Jensen, Ole T. Lifting Device., patent, September 15, 1896; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth174378/m1/3/: accessed July 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.