Improvements in Safety Appliances for Lifts Worked by Steam, Hydraulic, or other Power, for Preventing Accidents in the Use of same.
Year: 1889

page_text: Date of Application, 28th Dec., 1889
Complete Specification Left, 27th Sept., 1890-Accepted, 15th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Safety Appliances for Lifts Worked by Steam,
Hydraulic, or other Power, for Preventing Accidents in the Use
of same.
We, WILLIAM BURD MASSEY, and SAMUEL DUNN, both in the employ of the firm
of Shapland and Petter, of Barnstaple, in the County of Devon, Furniture Manu-
facturers, do hereby declare the nature of this invention, to be as follows:-
In lifts which are made without an enclosing well or shaft serious accidents
occasionally happen from the curelessness of those using the lift while ascending,
by reason of a foot or other part of the body of a passenger or a part of an object
placed on the lift unduly projecting beyond the edge of the lift and coming in contact
with the edge of the floor of the next higher landing or floor. The object of this
invention is to provide means whereby in case of such carelessness the ascending
lift shall be automatically stopped and reversed before it arrives at such next
landing.
For this purpose we fit a hinged flap or the like some 12 or 18 inches below each
floor or landing and just clear of the lift so as to allow the latter to pass it in the
ascent and descent. In connection with this flap we provide a rope or cord having
a weight suspended therefrom, the action being such that when the carelessly projected
part comes in contact with the flap the weight shall be detached and so act upon the
reversing rope as to stop and reverse the lift.
A suitable mode of carrying this invention into effect is as follows. A flap of the
width of the lift is hinged at the back and normally rests in front next to the front of
the lift on a hook or peg at one or both ends. Upon such peg we place an eye or
bight at one end of a light safety rope or cord which is led over suitable guide pulleys
and carries a weight at its other end. This weight is vertically guided say by a
feather at each end working in correspondingly grooved wood or iron rails. The
reversing rope passes freely through this weight and is provided with a clip stop a
short distance below the weight and capable of being adjusted to the most suitable
distance. When the flap is raised by contact with the unduly projecting part of the
passenger's body or other object on the lift the eye on the safety rope is lifted
off its hook or peg and the weight drops upon the clip on the reversing rope thus
pulling it down and effecting the stoppage and reversing of the lift, and that before
it reaches the next higher floor or landing.
A flap as described is provided at each floor or landing, the flaps being connected
by a light cord or rope. The space between the flap and the next higher landing may
be covered by canvas nailed to the edge of the flap and the landing.
Dated thin 90th dox of Draamber 188a
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Safety Appliances for Lifts Worked by Steam,
Hydraulic, or other Power, for Preventing Accidents in the Use
of same.
We, WILLIAM BURD MASSEY and SAMUEL DUNN, both in the employ of the firm
of Shapland and Petter of Barnstaple in the County of Devon, Furniture Manu-
facturers 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 :-
In lifts which are made without an enclosing well or shaft or where the doors of

page_text: access from the various floors are not made flush with the inside of the enclosing well
or shaft serious accidents occasionally happen from the carelessness of those using the
lift while ascending, by reason of a foot or other part of the body of a passenger or a
part of an object placed on the lift unduly projecting beyond the edge of the lift and
coming in contact with the edge of the floor of the next higher landing or floor in
case there is no enclosing well, or with the lintel of the doorway where the door is
not made flush with the inside of the well.
The object of this invention is to provide means whereby in case of such carelessness
the ascending lift shall be automatically stopped and reversed before it arrives at such
next landing or projecting lintel.
For this purpose we fit a hinged flap or the like some 12 or 18 inches below each
floor or landing or lintel as the case may be and just clear of the lift so as to allow
the latter to pass it in the ascent and descent. In connection with this flap we provide
a rope or cord having a weight suspended therefrom, the action being such that when
the carelessly projected part comes in contact with the flap the weight shall be detached
and so act upon the reversing rope as to stop or reverse the lift.
A suitable mode of carrying this invention into effect is as follows and as illustrated
by Figures 1 and 2 the former being a vertical section through an unenclosed well in a
corner of a room and the latter figure a plan view with the landing or floor removed.
A flap B extending across the width of the lift cage D is hinged at the back say by
pintles B and eyes (and normally rests in front next to the front of the lift cage on
a hook or peg E at one or both ends. Upon such peg E we place an eye or bight F
at one end of a light safety rope or cord F which is led over suitable guide pulleys G
and G¹ and carries a weight H at its other end. This weight is vertically guided say by
a feather at each end working in correspondingly grooved wood or iron rails I. The
reversing rope K passes freely through this weight and is provided with a clip stop L
a short distance below the weight and capable of being adjusted to the most suitable
distance. When the flap B is raised by contact with the unduly projecting part of
the passenger's body or other object on the lift cage the eye F' on the safety rope F
is lifted off its hook or peg E and the weight H drops upon the clip L on the reversing
rope K thus pulling it down and effecting the stoppage or reversing of the lift, and
that before it reaches the next higher floor or landing.
A flap B as described is provided at each floor or landing, the flaps being connected
by a light cord or rope M. The space between the flap and the next higher landing
may be covered by canvas nailed to the edge of the flap and the landing.
Figure 3 is a sectional front elevation and Figure 4 a plan section of a modification
in which we employ a rope B instead of the aforesaid flap B. This rope is at one end
fixed to the wall at B₁ or any other fixed part of the building while its other end is
carried up (or down) around guide pulley G its end being attached to a lever E on a
spindle E which also carries a lever E2. This latter normally supports the weight H
but when the rope B is displaced by an object protruding from the cage coming in
contact therewith the trigger E2 is pulled away from under the weight which then
drops upon the clip L thus effecting the stopping or reversing in the same manner as
first described.
Instead of the levers E and E2 we might of course use precisely the same detaching
arrangement as in Figures 1 and 2 that is to say a peg on a horizontal end of the
rope B would be passed through an eye on a pendent end of a rope supporting the
weight H which latter would drop when the peg was pulled out. In Figure 3
the rope B is shewn suspending for connection to the rope on the next lower
floor.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the saine is to be performed, we declare that what
we claim is :-
1. In lifts the application and use of a movable flap rope or equivalent part
arranged some distance below a floor or landing in combination with a weight
normally suspended or held in position above a clip on the reversing rope, but which

page_text: is tripped and allowed to drop upon such clip when the said flap or rope is raised by
contact with an object protruding beyond the edge of the cage, so that the further
ascent of the latter is thereby arrested and accident prevented substantially as set
forth.
2. The flap B hinged at its back and normally resting on a peg E which secures
the bight of a safety cord F having at its other end a pendent weight through which
the reversing rope can pass and which when it drops falls upon a clip on said rope and
stops the further ascent of the cage substantially as described with reference to
Figures 1 and 2.
3. The rope B fixed at one end and at the other end attached to a tripping arrange-
ment E E E for disengaging as required the weight H and causing it to drop upon
a clip on the reversing rope and thus arrest the further ascent of the cage substantially
as described with reference to Figures 3 and 4.
1. 0211
1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
DRUGS way
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.