Improvements in Lifts or Elevators.
Year: 1893

page_text: Date of Application, 27th Sept., 1893
Complete Specification Left, 27th June, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Lifts or Elevators.
I, EDWARD WILLIAM ANDERSON, Director of Easton, Anderson & Company
Limited of 3 Whitehall Place, in the County of London do hereby declare the
nature of my invention to be as follows:-.
My invention has for its object to provide a lift or elevator in which the ropes
or the like are kept taut and the necessary friction or bite of the rope for hauling
is obtained the weight of the cage and of the counterbalance weights being utilized
for these purposes the employment of endless ropes or the like being unnecessary
and the position of the motor being fixed. My invention is more especially intended
for use with lifts or elevators operated by an electric motor but it may also be
applied to lifts or elevators operated by other means, and it may be applied to lifts
or elevators in which the motor is situated either above or below. Any number of
ropes or the like may be used. Presuming that the motor is situated above, each
rope has the cage suspended to one of its ends and is passed over the drum of the
motor then under a pulley or under pulleys situated beneath the drum then again
over the drum and its other end carries the counterbalance weights or it may be
another cage if desired. In cases where increased grip is desired the ropes or the
like can be taken several times round the driving drum or pulleys by means of an
additional guide pulley or additional guide pulleys and a correspondingly wide
driving drum or pulleys.
When the motor is below, an equivalent arrangement is employed the pulley or
pulleys around which the rope or the like from the drum passes being above the
drum of the motor and the rope or the like being passed over the said pulley or
pulleys and under the said drum. Although I have mentioned a drum it will be
understood that pulleys mounted on the shaft driven by or from the motor may be
used in place of one continuous drum. The pulleys or the pulley or pulley and
drum may be provided with grooves to receive the rope or the like and these grooves
may be disposed so as to give the necessary clearance between the portions of the
rope or the like which are situated side by side and guide pulleys may be used to
direct each rope or the like in its proper path. Where circumstances will allow
of it I prefer the motor to be above as then less rope or the like is required for the
arrangement.
The brake by which the motor is retarded when necessary may be arranged to
be operated by mechanical means simultaneously with, and by means of, the same
movement which operates the device for supplying the motive agent to and cutting
it off from the motor. For this purpose the wheel which is partly rotated by the
rope or the like which is under the control of the attendant in the cage to cut off
or put on the motive agent carries a cam (preferably an internal cam) which when
the wheel is operated to cut off the motive agent moves one end of a lever so that
its other end exerts a pull through a rod upon a system of toggles or levers which
move the ends of a friction strap towards each other so that it embraces a wheel
on the shaft of the motor or of the drum or pulley shaft driven by it. A spring
or its equivalent is employed which is connected with the operating levers in such
a way that it pulls off the brakes when the aforesaid wheel is moved into such a
position that motive agent is supplied to the motor.
Dated the 27th day of September 1893.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.

page_text: Improvements in Lifts or Elevators.
I EDWARD WILLIAM ANDERSON Director of Easton Anderson & Goolden:
Limited of 3 Whitehall Place in the County of London, 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 has for its object to provide a lift or elevator in which the ropes
or the like are kept taut and the necessary friction or bite of the rope for hauling
is obtained, the weight of the cage and of counterbalance weights being utilized
for these purposes the employment of endless ropes or the like being unnecessary
and the position of the motor being fixed. My invention is more especially
intended for use with lifts or elevators operated by an electric motor but it may
also be applied to lifts or elevators operated by other means, and it may be applied
to lifts or elevators in which the motor is situated either above or below. Any
number of ropes or the like may be used. I will describe my invention with
reference to the diagram.
Figure 1 with the motor above and the vertical section Figure 2 and sectional
plan Figure 3 with the motor below.
Figure 4 is a side elevation of the brake mechanism.
Referring first to the diagram Figure 1, each rope a (of which there may be
one or more) has the cage b suspended to one of its ends and is passed over the
drum c of the motor then under a pulley d (or under pulleys) situated beneath
the drum c then again over the drum c and its other end carries the counter-balance
weight or weights e, or it may be another cage if desired.
In cases where increased grip is desired, the ropes, or the like, can be taken
several times round the driving drum or pulleys by means of an additional guide
pulley or additional guide pulleys, and a correspondingly wide driving drum or
pulley. When the motor is below, an equivalent arrangement is employed (see
Figures 2 and 3). One end of the rope (or each of such ropes) a is connected to
the cage b and passes upwards over a pulley thence down and around the drum c
then over the pulley d (or pulleys) and then again under and around the said
drum c and then up and over the pulley g the other end of the rope being attached
to the counterweight e. Although I have mentioned a drum c it will be understood
that pulleys mounted on the shaft driven by or from the motor may be used in
place of one continuous drum. The pulleys or the pulley, or pulley and drum,
may be provided with grooves to receive the rope, or ropes, or the like, and these
grooves may be disposed so as to give the necessary clearance between the portions
of the rope, or the like, which are situated side by side, and guide pulleys may. be
used to direct each rope, or the like, in its proper path. The braker by which
the motor is retarded when necessary is shewn as being arranged to be operated
by mechanical means simultaneously with and by means of the same movement
which operates the switch, or other device, for supplying the motive agent to, and
cutting it off from, the motor. The wheel g' which is partly rotated by the rope h,
or the like, which is under the control of the attendant in the cage, to cut off, or
put on, the motive agent carries a cam i (preferably an internal cani) which, when
the wheel g is operated to cut off the motive agent, moves an arm or lever k, fast
on a rock shaft which also has secured to it another lever or arm m. The arm m
is connected by an adjustable rod n and bell crank lever n³ (centered at n³) to a
system of toggle levers p connected to the ends of the parts of a friction strap
centered at so that it can be made to bear on the brake wheel r fast on the shaft
of the motor or on the drum or pulley shaft driven by it. The centres n³ and g²
are of course mounted outside the wheel r on any suitable part. By this arrange-
ment' when the motive agent is cut off from the motor the strap q will be caused

page_text: to grip the wheel so as to retard its rotation. A springs or its equivalent is
connected with the arm or lever m so that the brake strap q is slackened and
released from its bearing on the wheel r when the wheel g³ is moved into such a
position that motive agent is supplied to the motor.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is.-
1. In lifts or elevators the means herein described for utilizing the weight of the
cage (or its equivalent) as well as of the balance weight (or its equivalent) to give
the hauling friction or grip on the hauling rope or the like.
2. In lifts or elevators the combination of the drum c and pulley d with the cage
and the counterweight (or their equivalents) and a rope or the like connected to
the cage and counterweight and passed around the drum and pulley as described
and shewn in Figures 1 and 2 of the accompanying drawings.
3. The arrangement of the hauling gear of lifts or elevators as shewn by the
diagram Figure 1.
4. The arrangement of the hauling gear of lifts or elevators as shewn by
Figures 2 and 3.
5. The combination with the subject matter of either of the two last preceding
claims of the brake mechanism constructed arranged and operating substantially
as bereinbefore described and illustrated in Figures 2. 3. and 4 of the accompanying
drawings.
Dated this 27th day of June 1894.
JOHNSONS & WILLCOX,
Agents.