Year: 1887

page_text: Date of Application, 30th June, 1887
Complete Left, 29th Mar., 1888
Complete Accepted, 4th May, 1888
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature of
this invention to be as follows:-
This invention relates to lifts or elevators and to safety devices therefor.
In order to prevent, during the descending motion of the elevator in the regular
working, or on the breakage of a rope during the ascent in case the catching
apparatus described in the specification of former Letters Patent No. 3110 dated
February 28th A.D. 1887 does not operate, persons or objects below the elevator
being hit or injured, or the elevator being itself destroyed under such circumstances
by striking upon solid objects, on the under side of the elevator is arranged a rigid
or elastic yielding so-called "safety catch bottom" on hinges or in any other suitable
manner so that, when the elevator strikes upon the same, the safety catch bottom
first performs a motion by itself which causes the operation of the catching apparatus.
A second safety apparatus for elevators is formed by winding on and off, besides
the carrying rope or girth, a comparatively thin string, rope, girth or chain simul-
taneously with the carrying rope and equally with this, and generally by the same
shaft, but under certain circumstances quite separate, so that this string which is
called the "safety catch string" following the motion of the elevator, is lengthened
or shortened. Whilst the safety catch string is thus wound up or off at one end, it is
connected at its other end with the safety catch bottom herein before described, or
directly with a suitable part of the catching apparatus itself. If now any derange-
ment of the elevating apparatus occurs, the belt of the winding mechanism is broken,
or the elevator shaft, or its toothed wheels etc. breaks, or the carrying rope is broken
before or behind the rope pulley, the safety catch string which under such circum-

page_text: stances is at once stopped or strained by a special device, comes in operation in such
a manner that it does not follow the descending elevator, and thereby so acts upon
the catching apparatus connected with it that this catching apparatus comes into
operation and stops the elevator.
To enable the action of the catching apparatus to be always under controll a small
lever is arranged within reach of the person standing on the elevator, by means of
which lever the catching apparatus can be set in operation the same as though the
carrying rope had been broken. In the special catching apparatus mentioned, this
lever has for example to be so arranged that by it are lifted the parts connecting the
fore brake and the safety catch bottom or these latter themselves.
When in good condition the elevator must on the lever being operated be stopped
This device offers an invaluable means by which the condition of the safety
apparatus may at all times be ascertained.
at once.
In order to prevent any one coming below or above the moving or resting elevator,
the shaft is closed by means of a guard of trellis work, rope, chain, or the like,
arranged on the upper or lower part of the elevator, which can also be connected with
each other by cross hars, in such a manner that this guard way follows the motions
of the elevator by means of rolls or rollers placed above and below, and in this way
renders the shaft inaccessible at all points except where the elevator is situated.
Dated this 30th day of June 1887.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.

page_text: Improvements relating to Lifts or Elevators and to Safety Devices
therefor.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex 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 :-
This invention relates to lifts or elevators, and to safety devices therefor.
The said invention is represented in the accompanying drawing the figures of which
are hereinafter referred to.
In order to prevent, during the descending motion of the elevator in the regular
working, persons or objects below the same being injured, or the said elevator being
itself destroyed by striking upon solid objects, I arrange upon the under side of the
elevator, (Figures 1 and 2), a rigid or elastic yielding "safety catch bottom" hinged
or arranged in any other suitable manner so that, when the elevator strikes upon any
object, the said safety catch bottom o first performs a relative upward motion and
thereby causes the catching cheeks n to act so as to arrest the elevator.
A second safety apparatus consists of a string (band, girth, chain, rope or the like)
which is either endless and guided over pulleys or rollers p (Figure 5) or open and
provided with a counterweight G, Figure 6, and is uniformly drawn up and down
with the elevator. This string is connected at one point with any suitable part of the
catching apparatus and is used in any desired manner. If for example, in Figure 5
the carrying rope g breaks behind the rope pulley ; in which case the catching
apparatus will frequently not operate at once, the roller previously held up by y
drops down, the claw t turns and clamps the safety catch string between it and a firm
abutment, for instance, the plate m.
The same clamping device, Figure 5 can of course also be arranged within a shaft
between the rope pulley and the elevator.
In a similar manner a clamping device for the safety catch string can be put in
connection with the transmitting belt R, Figure 6, so that, whon the transmitting
belt breaks or slips off, the roller q' and with it the wedge or key t drops and clamps
the string.
In order to prevent any one coming below or above the elevator the shaft, Figures 7
and 8, is closed by means of a two part guard made of double the length of the said
shaft, by means of transverse rods ss which are connected with each other by a cloth,
fabric, rope, girth, chain or the like, in such a manner that one half of the guard is
attached to the upper end of the shaft and the other to the bottom of the elevator.
When the elevator moves up, the rods of the upper half are placed little by little
upon the elevator top or roof and are pushed together, those of the lower half are
raised one after the other from the bottom of the shaft and are drawn asunder, and
vice versa in the downward motion of the elevator.

page_text: In this manner, the shaft is always closed except at that point, occupied by the
elevator.
In order to enable the elevator to be at any time arrested by hand or to control the
safety of the catching apparatus, a hand lever y Figures 1 and 2 is provided by which
a part of the catching apparatus can be raised. If the catching device is in proper
order, the elevator is then stopped at once just as if the carrying rope had broken.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed as communicated to me by my
foreign correspondent I declare that what I claim is.
First. A safety catching bottom o movably arranged below the elevator, which
bottom, on striking upon solid bodies, sets the catching apparatus in action.
Second. A safety catch string which is connected with the catching apparatus,
and which being either endless and guided over pulleys p or open and provided with
a counterweight G, is drawn up and down by the elevator, and is prevented from
moving with the same by suitable clamping devices acted upon by the endangered
parts of the raising machine or the carrying rope, at the moment when one of these
parts breaks, so that thereby a displacement against the elevator and consequently the
catching is effected.
Third. A two-part guard consisting of transverse rods s, s, connected with each
other by means of a fabric, band, rope, chain or the like, which guard is secured, on
the one hand to the upper end of the shaft, and, on the other hand, to the bottom of
the elevator and which in accordance with the motion of the elevator is drawn asunder
or pushed together so that the shaft is always automatically closed at the points at
which the elevator is not situated.
Dated this 28th da of Mah 1000