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UNITED STATES PATENT OFFICE.
SSHIRWOOD Y. REAMS, OF BELLEVILLE, TEXAS.
IMPROVEMENT IN PORTABLE DERRICKS.
Specification forming part of Letters Patent No..177,559, dated May 16, 1876; application filed
October 23, 1875.
To all whom it nay concern:
Be it known that I, SHIRWooD Y. REAMS,
of Belleville, in the county of Austin and State
of Texas, have invented a new and Improved
Portable Derrick, of which the following is a
specification :
My invention consists of an adjustable crane
mounted on a truck-platform, having anl over-
head frame for the support of the upper end
of the crane-post, and braces for staying the
frame, so that the crane can be turned around
to overhang the sides, the whole being a simn-
ple and efficient apparatus, which may be
moved readily from place to place by hand
or by horse-power.
Figure 1 is a plan view, and Fig. 2 is a lon-
gitudinal sectional elevation, of my improved
portable crane, thie section being taken on
line.x x.
Similar letters of reference indicate corre-
sponding parts.
A is the platform of a truck-frame, mounted
on wheels B. C is the overhead supporting-
frame, in which, and on the aforesaid frame A,
is mounted the revolving post D of a crane,
the sweep E of which is supported adjustably
by a rope, F, and a windlass, G, said windlass,
and also the windlass H of the hoisting-rope
I, being mounted on post D to turn with it. J
is a platform for the operator to stand on when
working the hoisting-rope. K represents the
biaces for staying the frame laterally when
hoisting over the sides.
This arrangement is simple and cheap, and
is calculated to afford an efficient means for
raising heavy weights.
Havingthus described my invention, I claim
as new and desire to secure by Letters Pat-
ent-
1. The combination, in a portable derrick,
of the post D, sweep E, adjusting-cord F, wind-
lass G, and the hoisting-rope and windlass, all
constructed and arranged as set forth.
2. The combination of the lateral brace-
hooks K with a portable derrick, as and for
the purpose set forth.
S. Y. REAMS.
Witnesses:
J. W. WAxNY,
Z, W. 1ATTHEWS.