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UNITED STATES PATENT OFFICE.
WILLIAM IH. SMITH, OF PORT LAVACA, TEXAS.
GATE.
SPECIFICATION forming part of Letters Patent No. 447,374, dated March 3, 1891.
Application filed June 9,1890. Serial No. 354,853, (No model.)To all wzhonm it may concern:
Be it known that I, WILLIAM H. SMITH, a
citizen of the United States, residing at Port
Lavaca, in the county of Calhoun, in the
5 State of Texas, have invented a newand use-
ful Improvement in Suspended Roller-Gates,
of which the following is a specification.
My invention relates to improvements in
the construction of self-closing roller-gates,
to by which greater simplicity is attained and
the operation of the gate is much facilitated.
The gate is a structure hanging and sliding
by means of rollers on an inclined cross-bar,
and so connected by ropes and pulleys to sta-
r5 tionary posts that a person approaching it on
horseback or in a vehicle may easily open the
gate (without dismounting) by pulling the
rope, and on releasing the rope the gate will
close automatically.
20 The drawing is a perspective view of the
gate.
In the specification similar letters of refer-
ence indicate corresponding partsin the draw-
ing.
25 A represents the ground, in which the posts
b', b2, b3, b4, and b5 are firmly driven. Posts
b4, b', and b2 have the inclined cross-bar c
(which may be either of round or flat bar-
iron) secured to them, as shown. The bar is
30 bent at either end to such an angle as may be
required by the inclination of said bar. The
ends are let in and riveted or bolted to posts
b4 and b2, and the center of the bar is sup-
ported by post b" and secured thereon by a
35 staple y. The posts are so located that if
connected by lines they would form a square,
rhomboid, or diamond, according to the re-
quirements of the traffic passing through the
gate, with post b6 in the center of the same.
40 The gate proper consists, essentially, of two
uprights d d', to which the rollers d' di are
fastened and secured on the cross-bar by
means of pins g. The rope or chain ii is
fastened to one end of the gate and passes
45 through the double pulleyf on the post b",
and also through the hanging (single) pulleys
o of posts b' and b8. To the other end of the
gate is attached the rope h, passing over a
pulley in post b4 and carrying the weight 7k.
So The posts b' and b3 have catch-springs I fast-
ened on them to hold the rope i attached to
the gate and keep the same opened any de-
sired length of time. When the rope is drawnfrom underneath the catch-spring, the gate
will close automatically by its own gravita- 55
tion on the inclined cross-bar on which the
hanging rollers of the gate are running and
also by the weight k. It will be observed
that the pull-rope is arranged in a bisected
triangle with its ends terminating in upright 6o
d'. The upright d has a part cut out of its
foot end to clear the axle and hub of any
carriage passing through, so that the axle
cannot strike the gate and possibly break it.
In the foot end of the posts b4 and b5 are 65
driven right-angled guards m and n, in which
the lower end of the gate slides to guard
against stock or wind swinging the gate.
The operation of the gate is as follows:
By reference to the drawing it will be seen 70
that a person desiring to pass the gate and
approaching it from the direction of post b'
takes hold of that part of the rope forming
the base of the bisected triangle, pulls it and
holds it until the gate is passed. The pull 75
on the rope will react on the pulley on post
b', also on one of the pulleys f on post b2, and
finally on the terminal in upright d2. By
these means the gate opens in the direction
of the double pulley on post b2, and will close 80
itself by means of gravitation as soon as the
person releases the rope. When it is desir-
able that the gate should be kept open long
enough for a wagon-train or a herd of cattle
to pass through, a person in the lead opens 85
the gate and secures it in that position by
fastening the rope under the catch-spring,
and a person in the rear, after passing the
gate, pulls the rope from underneath the
catch-spring and the'gate will close, as here- 90
tofore described.
Having thus described my invention, I
claim as new and desire to secure by Letters
Patent-
The combination, with a gate suspended on 95
an inclined track c, of a single pull-rope pass-
ing around suitable pulleys on posts b', b2,
and b3 and secured at both ends to the inner
upright d' of the gate, so as to form a bi-
sected triangle, and catch-springs I on the Ico
front of the posts b' and b3, substantially as
shown and described.
WILLIAM I-I. SMITH.
Witnesses:
GEO. O. V. ROEDERN,
GEO. TASSERMANN, Jr.
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Smith, William H. Gate., patent, March 3, 1891; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172622/m1/2/: accessed June 30, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.