An Improved Apparatus for Locking Lifts.
Year: 1893

page_text: Date of Application, 18th Aug., 1893
Complete Specification Left, 10th Mar., 1894-Accepted, 5th May, 1894
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Locking Lifts.
I, CHARLES MORGAN, of 133 Regent Street, in the County of London, Tailor,
do hereby declare the nature of this invention to be as follows:-
My invention relates to an Improved Apparatus for Locking Lifts, so that the
lift cannot move until the door is closed in the passage or opening leading to the
said lift.
On the hinged side of the door I fix a catch which falls into an opening cut in
the lift when the door is opened, but directly the door is closed the lift passes free
of the catch.
Near the catch of the locking side of the door I fix a tumbler with a spring for
the purpose of the said tumbler to fall in a slot in the bolt of the lock in order to
lock the door until the lift (which is provided with a projection) rises or falls into
position, the said projection pressing against the tumbler so as to force the tail end
of the tumbler out of the slot for the purpose of opening the door.
2000
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Apparatus for Locking Lifts.
I, CHARLES MORGAN, of 133 Regent Street, in the County of London, Tailor,
do hereby declare the nature of this invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
My invention relates to an Improved Apparatus for Locking Lifts, so that the lift
cannot move until the door is closed in the passage or opening leading to the
said lift.
And in order that my invention may be thoroughly understood, I now proceed to
describe the accompanying drawing thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a front elevation of a hinged door.
Fig. 2, is a plan of lift and other parts.
Fig. 3, is a vertical section of the lift and door.
Fig. 4, is a plan of the catch fixed to the top of the door.
Fig. 5, is a view of the tumbler with spring, and slot in locking bolt.
Fig. 6, is a vertical section of an arrangement for a sliding door.
Fig. 7, is a plan of the top of a sliding door.
Fig. 8, is a view of the tumbler, pin and spring drawn to an enlarged scale.
Parts of the figures are broken off for convenience.
Similar letters refer to similar parts throughout the several views.
On the hinged side of the door a I fix a catch b which falls into an opening c
cut in the lifte and presses against a stop block d when the door is opened as shown
by dotted lines in Fig. 4, but directly the door a is closed the lift e passes free of
the catch 6 by or through the opening c¹.

page_text: Near the catch on the locking frame a' of the locking side of the door a I fix as
shown in Figs. 5, and 8, a tumbler f with a spring 9, for the purpose of the tail
end of said tumbler, to fall in a slot in the bolt of the lock in order to lock the
door a until the lift e (which is provided with a projection k) rises or falls into
position, the said projection k pressing against the tumbler so as to force the tail
endi of the tumbler f out of the slot h to permit the opening of the door a.
Where a sliding door is used as in Figs. 6, and 7, in place of the herein before
described hinged door I adopt the following arrangement. On the top of the frame
of the lift I cut a horizontal groove n, and on the top of the sliding door I fix a
locking or sliding pin m projecting into the said groove n, so that when the door
is released (by the projection k and tumbler hereinbefore described) the said
pin m slides with the door into the aforesaid groove n thereby preventing the lift
from moving up or down until the door / is closed.
An opening o is formed in the lift as in Fig. 7, to allow the pin m to pass
through as the lift moves up or down.
The locking arrangement for the sliding door is of the same construction as
hereinbefore described for the hinged door a.
. Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In an apparatus for locking lifts, the combination of the catch 6 fixed to the
door a, with the opening c and c¹ cut in the lift e and the stop block d, substantially
as herein described and according to the accompanying drawing.
2. In an apparatus for locking lifts, the combination of a spring g, tumbler f and
tail end to pass in or out of the slot h in the bolt j, substantially as herein
described and according to the accompanying drawing.
3. In an apparatus for locking lifts, the combination of a locking and sliding
pin m fixed to a sliding door, and the horizontal groove n and opening o in the
lift, substantially as herein described and according to the accompanying drawing.
Dated this 10th day of March 1894.
J. P. BAYLY,
18, Fulham Place, W., Agent for the Applicant.