Improvements in or relating to Hoists or Elevators.
Year: 1892

page_text: Date of Application, 28th Apr., 1892
Complete Specification Left, 24th Jan., 1893—Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Hoists or Elevators.
We, JAMES MUSGRAVE of Atlas Mills, Bolton, Cotton Spinner, and WILLIAM
HILL of Park View, 163 Chorley Old Road, Halliwell near Bolton, Manager,
both in the County of Lancaster, do hereby declare the nature of our said invention
to be as follows :-
This invention refers to improvements in or relating to hoists or elevators
employed in mills, warehouses, and other buildings, and has for its object that of
providing means for automatically locking and unlocking the doors of the hoist-
well by the movements of the cage. This invention is equally applicable to sliding,
folding, and swing doors and is designed to automatically lock each door in the
hoist-well when the cage moves away from the same, thereby preventing the doors
being opened until the cage returns and reducing the possibility of accident from
falling down the hoist-well to a minimum. This we effect by disposing near each
door a spring, lever or levers and spring, or other equivalents attached to a lock
bolt or bolts mounted in the door casing or other convenient place, to allow of the
said bolt or bolts shooting into a receptacle or receptacles in the door to lock the
same. When the cage is in close proximity to or opposite a door in the hoist-
well the spring, lever or levers, or other equivalents are operated upon by a
preparation on the cage to release the lock bolt or bolts from the door, which
permits of the same being opened. Immediately the spring, lever or levers, or
other equivalents are released from the preparation on the cage, by the latter
moving away, the bolt or bolts shoot into the receptacle or receptacles in the closed
door and locks the same until the cage returns.
Dated the 27th April 1892
EDMUND CHADWICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in or relating to Hoists or Elevators.
We, JAMES MUSGRAVE of Atlas Mills, Bolton, Cotton Spinner, and WILLIAM
HILL of Park View, 163 Chorley Old Road, Halliwell near Bolton, Manager,
both in the County of Lancaster, do hereby declare the nature of our said inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention refers to improvements in or relating to hoists or elevators
employed in mills, warehouses, and other buildings, and has for its object that of
providing means for automatically locking and unlocking the doors of the hoist-
well by the movements of the cage. This invention is equally applicable to
sliding, folding, and swing doors and is designed to automatically lock each door
in the hoist-well when the cage moves away from the same, thereby preventing the
doors being opened until the cage returns and reducing the possibility of accident
from falling down the hoist-well to a minimum. This we effect by disposing near
each door a spring, lever or levers and spring, or other equivalents attached to a
lock bolt or bolts mounted in the door casing or other convenient place, to allow of
the said bolt or bolts shooting into a receptacle or receptacles in the door to lock
the same.
When the cage is in close proximity to or opposite a door in the hoist-
well the spring, lever or levers, or other equivalents are operated upon by a pre-
paration on the cage to release the lock bolt or bolts from the door, which
037

page_text: permits of the same being opened. Immediately the spring, lever or levers, or
other equivalents are released from the preparation on the cage, by the latter
moving away, the bolt or bolts shoot into the receptacle or receptacles in the closed
door and locks the same until the cage returns.
Fig. 1 is a sectional plan of a hoist-well with door locked when cage has moved
from a doorway.
Fig. 2 is an outside elevation of Fig. 1.
Fig. 3 is a sectional plan of a hoist-well with door unlocked and open when the
cage is opposite a doorway, and
Fig. 4 is a sectional elevation through line A B in Fig. 3.
C is the hoist-well; D the cage; E the slides or guides; F the door jambs, and
G the door. To the side of the hoist-well C is fixed the spring H by the bolts [
or other means. To the other end of the spring H is attached the lock bolt K
mounted in the door jamb F. To prevent wear and protect the door jamb, the
latter may be provided with a metallic tube through and in which the lock bolt K
slides. The door G is provided with the receptacle L into which the lock bolt K
shoots when the door is closed and the cage D has moved away. To the cage D is
fixed the metallic or other bar M, secured thereto in any convenient manner.
This invention operates in the following manner :- -When the attendant in charge
of the hoist is ready to start the hoist he closes the door G as shown in Fig. 1, and
when the cage D has moved sufficiently far to release the spring H from the bar M
the lock bolt K is by the spring H shot or placed in the receptacle L, by which
the door & is locked automatically as shown in Fig. 1, and remains so until the
cage D returns and withdraws the lock bolt K as shown in Fig. 3 when the door G
can be opened as shown.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
In combination with a door and cage of a hoist or elevator the use of the
spring H, lock bolt K, and the bar M, as and for the purpose specified, substantially
as described.
Dated the 20th day of January 1893.
EDMUND CHADWICK, F.I.C.P.A.,
Agent.