IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR OPENING AND CLOSING DOORS IN CONNECTION WITH HOISTS
Year: 1884

page_text: I, BENJAMIN SHAW, of Calder Soap Works, Wakefield, in the County of York,
Engineer do hereby declare the nature of my Invention for IMPROVEMENTS IN
THE METHOD OF AND APPARATUS FOR OPENING AND CLOSING DOORS IN CONNECTION
WITH HOISTS to be as follows:-
My invention relates to certain improvements in apparatus for the opening and
closing of doors or gates protecting the entrance to the hoist well on the various
floors through which the hoist passes, and has for its object the arrangement of the
apparatus that the doors or gates will be opened automatically on the cage
approaching the floor level and close when the cage leaves. the said level.
I accomplish my object by mounting at one or both sides of the entrance to the
hoist well on each floor, a lever to which is fitted a pulley, the circumference of which
projects into the hoist well such a distance that on the hoist cage rising or lowering,
projections on the cage come in contact with the said pullies and actuate levers
moving the upper ends away from the hoist cage and thereby opening the doors or
gates which are actuated by links to the upper portion of the levers.
On the hoist cage continuing its course and when the projections are clear of the
pullies, the doors or gates will be closed by the action of springs or weights acting
upon them or by the top and bottom hinges being arranged so that the centres are
not in the same line.
Dated this twenty fourth day of April 1884.
WAUGH & CHAPMAN,
Agents for the Applicant.

page_text: I, BENJAMIN SHAW of Calder Soap Works, Wakefield, in the County of York,
Engineer, do hereby declare the nature of my invention for IMPROVEMENTS IN THE
METHOD OF AND APPARATUS FOR OPENING AND CLOSING DOORS IN CONNECTION
WITH HOISTS, 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 certain improvements in apparatus for the opening and
closing of doors or gates protecting the entrance to the hoist well on the various
floors through which the hoist passes, and has for its object the arrangement of the
apparatus so that the doors or gates will be opened automatically on the cage
approaching the floor level, and close when the cage leaves the said level.
I accomplish my object by mounting at one or both sides of the entrance to the
hoist well on each floor a lever to which is fitted a pulley, the circumference of
which projects into the hoist well such a distance, that on the hoist cage rising or
lowering, projections on the cage come in contact with the said pullies, and actuate
ilevers moving the upper ends away from the hoist cage, and thereby opening the
doors or gates which are attached by links to the upper portion of the levers.
On the hoist cage continuing its course, and the projections clear of the pullies,
the doors or gates will be closed by the action of springs or weights acting upon
them, or by the top and bottom hinges being arranged so that the centres are not
in the same line.
Having now stated the nature of my invention, I will proceed to describe the
same by aid of the accompanying drawings how the same may be carried into
effect. Fig. 1 represents the front elevation of the entrance to a hoist well with
the gates in front of the same closed; Fig. 2 is a section of the same through line
a b, shewing the gates open, Fig. 3 is a detail of the lever and pulley for opening
the gate.
The cage A is operated upon in the ordinary manner, and in front of the same
at one side when only one gate or door B is used, I secure a projecting piece C,
the most prominent part of which is opposite to the pulley D, when the bottom of
the cage is level with the floor and inclines' down to the face of the cage at the top
and bottom of the same; and when in the case of two doors or gates, as shewn by
the drawings, I secure a projecting piece C at both sides.
When the cage is rising or descending, the projections C come in contact with
the respective pullies D which are secured to the levers E, the latter being jointed
at the bottom to the brackets F. These projections C coming in contact with the
pullies, cause the top end of the levers E to move outward towards the gates, and
being connected to the latter by links G, they are forced open and remain so as
long as the hoist cage is opposite the floor. As soon as the cage continues its
course, the pullies D follow the inclination of the projecting pieces C, and the gates
begin to close, which is effected by being hung with the bottom hinge H some
distance in front of the top hinge or journal H' as shewn by Fig. 2; or by springs
secured in any convenient position and acting upon the cross bars, or any other

page_text: suitable part of the gates by which they are pressed towards each other and thereby
closed; or springs may be secured at each side of the openings as shewn at S, so
that when the gates are opened, the top rails or other suitable portion of the latter
will come in contact with the springs and put pressure on the same, which when
the cage leaves the floor level, will return to their normal state and assist in
closing the gates.
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
The automatic opening of hoist doors or gates by levers actuated substantially
in the manner described, and as illustrated by the accompanying drawings.
The automatic closing of hoist doors or gates substantially in the manner
described and as illustrated by the accompanying drawings.
DUL
CT1007
WAUGH & CHAPMAN,
Agents for the Applicant.