Improvements in Well Doors for Lifts.
Year: 1898

page_text: Date of Application, 15th Dec., 1898
Complete Specification Left, 9th June, 1899—Accepted, 2nd Sept., 1899
PROVISIONAL SPECIFICATION.
Improvements in Well Doors for Lifts.
ALBERT SEAR, 5, Muriel Street, Islington, London, N., Hydraulic Lift Fixer,
do hereby declare the nature of this invention to be as follows:-
The lift doors are fixed in front of the lift hole on each floor to prevent persons
falling down the hole the doors are in two halves, (say three feet high each)
the top half door stopping half way so closing
is fixed at the top and also one at the bottom of the cage of the lift to strike
a six foot opening. A small lever
a catch fixed on the bottom rail of the bottom door, and also one fixed on the
balance weight of bottom door. When the cage rises, the lever fixed on the top
of the cage strikes the catch fixed on the door and lifts the door with it, a bead
is fixed on the bottom edge of this door, and as it rises picks the top door up
with it untill the cage gets floor level.
When the cage passes floor level, a small lever fixed at the back of the catch
on the door strikes a pin fixed to the framework of the doors and releases the
catch, the lever on the cage passes the catch and the doors drop, and the balance
weight rises, (the doors being heavier than the balance weight).
The catch on the balance weight stops against the lever fixed at the bottom
of the cage, and prevents the doors lowering only at the same speed as the cage
travels. The same thing applies when the cage is coming down.
The lever fixed at the bottom of the cage strikes the catch on the balance
weight pulls the balance weight down and the doors up, untill the lever fixed
at the back of the catch on the balance weight strikes a pin fixed to the frame-
work of the doors, which releases the catch.
The lever on the bottom of the cage passes the catch and the balance weight
rises, the doors drop untill the catch fixed on the door strikes the lever fixed on
the top of the cage, the doors then lower at the same speed as the cage travels.
A cord is attached to one end of the two levers on the cage, and by pulling
this cord, prevents the levers on the cage striking the catches only on the floor
where the doors are required to be lifted.
Dated this 14th day of December 189s
Improvements in Well Doors for Lifts.
ALBERT SEAR, late of 5, Muriel Street, Islington, N., now of 49, Falkland
Road, Hornsey, London, N., Hydraulic Lift Fixer, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement:-
The doors are fixed in two halves in front of the lift-hole on each floor to pre-

page_text: vent anyone falling down the hole. A lever (A. Fig. 1-2) is fixed on the top
of the cage (E Fig. 1) and when the cage is traveling up this lever strikes a
tumbler (C Figs. 1-2) fixed on a plate on the bottom door (D) Fig. 1) and lifts
it until the cage gets floor level when the cage gets above floor level a lever
(B Figs. 1-2) fixed at the back of the tumbler strikes a pin (G Fig. 2) fixed to
the framework of the doors and raises the other end of this lever which allows
the tumbler to rise. The lever (A Figs. 1-2) on the top of the cage passes the
tumbler and the doors drop (the latter being heavier than the balance-weight)
the balance-weight rises which has a tumbler (C Figs 1-2) and levers (B
Figs. 1-2) fixed to it the same as those on the doors (fixed the reverse way up)
this tumbler stops against a lever fixed at the bottom of the cage similar to the
one on the top of the cage and as the cage goes up the doors come down, closing
the opening in front of the lift-hole.
The same thing occurs when the cage is traveling down. The lever fixed on
the bottom of the cage strikes the tumbler fixed to the balance weight of the doors
and pulls the weight down and the doors up untill the lever fixed at the back of
the tumbler on the balance weight strikes a pin fixed to the framework of the doors
and releases the tumbler from the lever fixed on the bottom of the cage, the
balance-weight rises and the doors drop untill the tumbler fixed on the door
strikes the lever fixed on the top of the cage, the doors then lower with the cage
thus closing the lift-hole.
A cord is attached to one end of the lever (A Figs. 1-2) fixed on the top of
the cage, and to one end of the lever fixed at the bottom of the cage and by pull-
ing this cord prevents these levers striking the tumblers and by releasing it lifts
the doors where required.
Figs. 3 and 4 shew levers (A) fixed at the top and bottom of the cage (E,) to
strike the tumblers (C) one fixed on the door (1) and one fixed on the balance-
weight (W) the lever (B) falls at the back of the tumbler (C) to prevent it pass-
ing the lever (A) untill the lever (B) strikes the pin (G) as the door goes up,
which causes the other end of the lever (B) to rise and releases the tumbler (C)
from the lever (A).
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is
I. A tumbler fixed on the door to strike a lever fixed on the top of the cage.
II. A tumbler fixed on the balance weight of the door to strike a lever fixed
on the bottom of the cage.
III. A cord attached to the lever fixed on the top of the cage to the lever on
the bottom of the cage to prevent the tumblers fixed to the door and to the
balance-weight striking the levers fixed to the cage.