Elevator Door and Catch. Page: 4 of 4
[2], 2 p. : ill. ; 23 cm.View a full description of this patent.
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676,442
at the central portion, and providing the side
of the cage with cup-shaped members 16 in
position to receive the projections. An arm
17 is mounted upon the side of the cage ad-
5 jacent to each member and projection, and a
cord 18 is secured thereto and to the projec-
tion on the rear face of the guide. A verti-
cally-movable rod 19 is secured to the free
ends of said arms, so as to operate them in
io unison. A lever 20 is pivotally secured be-
low the bottom of the cage in engagement
with the lower end of the rod and provided
with a foot-piece 21 at its free end. The foot-
piece is preferably provided with a shoulder
15 22, which is adapted to engage with a suit-
able catch on the bottom of the cage and hold
the footpiece and the rod depressed when it
is desired to hold the guide out of engage-
ment with the pin. A spring 23 is preferably
20 seated in each of the members, so as to en-
gage with the projection and normally force
the guide out in position to engage with the
pin on the door as the cage is moved up and
down the shaft. As the central projection
25 and cupped member are located at one side
of the vertical line between the end projec-
tions to correspond with the curvature of the
guide, it is desirable to provide means for
drawing back that projection simultaneously
30 with the end projection. I accomplish this
by journaling a rock -shaft 24 across one
side of the doorand connecting one end with
the rod 19 by means of an arm 25, which is
of the same length as the arm 17 upon its
35 opposite end, the arm 17 being connected with
the projection 15 by the cord 18.
In using my improved elevator door and
catch the parts are so arranged that as the
elevator passes the different landings the pin
40 on the door will enter either end of the slot as
the door is moving up or down and the catch
released from engagement with the pin or
other means of securement and the door
gradually drawn back, so as to stand wide
45 open by the time the bottom of the elevator
reaches the landing. As the cage moves upon
its journey in either direction the door will
be closed and automatically latched by being
forced over laterally by the curved guide.
50 However, if it be desired to pass one or more
landings without opening the door the at-
tendant places his foot upon the footpiece
at the bottom of the cage and presses it down,
which will cause the guide to be withdrawn,
55 so that it will not engage with the pin on the
door. If the operator should desire to open
the door after the end of the guide has passed
the pin, it can be done in the usual manner
and the door moved back until the pin will:
6o register with the central curved portion of
the guide. By releasing the guide the springs
in the cup-shaped members will force it for-
ward, so as to cause its walls to engage with
the pin and close the door in the same man-1ner as though the door had been opened by 65
the guide instead of by the attendant. If
for any reason the pin should fail to enter
the groove,the groove may be drawn back at
any point and the door moved so as to cause
the pin to enter, and thus cause the parts to 70
operate the same as originally intended.
The catch is located substantially midway
of the door, and by providing the door with
antifriction-rollers at top and bottom the pull
of the guide upon the pin is substantially in 75
the same plane with the door and the parts
are not liable to stick or bind, and thus in-
jure the parts and jar the elevator-cage. The
footpiece, for controlling the guide is prefer-
ably connected with the rod by means of a 8o
rock-shaft, so that it may be located at any
convenient point in the bottom of the ele-
vator to permit of its being conveniently
moved by the operator.
By constructing the parts as above de- 85
scribed the door of each landing may be op-
erated by use of but a single guide, which is
located upon the cage and under complete
control of the operator.
Having thus fully described my invention, 90
what I claim as new, and desire to secure by
Letters Patent, is-
1. In an elevator, the combination, with
the cage, of a curved guide movably secured
to one side thereof, the outer face of said 95
guide being provided with a longitudinally-
grooved channel, projections upon the rear
face of the ends and central portion of said
guide, hollow members for the reception of
said projections, arms mounted upon the side 100
of the cage, one for each projection, a cord
from each arm to its respective projection,
means for operating said arms in unison, and
a door provided with a pin in position for en-
tering the channel in said guide, substan- 105
tially as described.
2. In an elevator, the combination, with a
cage, of a curved guide movably mounted
upon the side of the cage, arms pivotally se-
cured to the cage one at each end of the 110
guide and one at the center thereof, cords for
connecting said arms with the guide, a rock-
shaft journaled upon the door and connected
with the arm at the center of the guide at
one end and provided with an arm at the 115
other end in alinement with the arms at the
ends of the guide, a rod connected with said
arm and the arms at the ends of the guide,
a lever secured to the lower end of the rod,
the free end of which is provided with a 120
shouldered footpiece that projects through
the bottom of the cage, and a door provided
with a pin in position to enter the groove of
said guideway, substantially as described.
IRA S. McNAUG HT.
Witnesses:
GEO. W. BURROUGHS,
MORGAN BRYAN.2
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McNaught, Ira S. Elevator Door and Catch., patent, June 18, 1901; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512522/m1/4/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.