Lifts, and the like.
Year: 1887

page_text: Date of Application, 28th Feb., 1887.
Specification Accepted, 29th Mar., 1887.
Lifts, and the like.
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 improved apparatus for preventing the cages of hoists, lifts
and other elevators from falling in case of accident.
The safety appliances heretofore employed are subject to two defects: they use
springs which are uncertain in their action, and these springs are placed at the upper
part of the cage so that they do not afford any protection against breakage below the
safety apparatus.
To obviate these defects, I provide the improvements hereinafter described.
In the accompanying drawing.
Figure 1 is an elevation of a cage provided with the improved apparatus, the latter
being shown in its inoperative position.
Figure 2 is a view similar to Figure 1 but showing the safety mechanism in its
operative position.
Figure 3 is a view of a detail.
Figure 4 illustrates a modification.
According to the said invention the cage is formed in two parts which can be
displaced relatively to each other. The portion a of the bottom adapted to carry the
load is suspended from rods which carry the cross bar g provided with the eye
bolt h, and the guide frame 6 having the guides o and the wing-shaped catches d d.
When the rope is unbroken the two parts of the cage are in the position shown in
Figure 1. Here the guide frame b with the plates serving as guides for the rods!
bears upon the platform a and participates in its motions.

page_text: The pivotted catches d d on the lower part of the guide frame are also drawn up by
the chains n so that their teeth are removed from the cage guides m.
If the rope breaks, the whole cage slides down a short distance and the weighted
levers drop and press their ends into contact with the guides m. Owing to this
breaking action of these levers the frame b by reason of its comparatively light weight
is retarded. The platform a then moves slightly relatively to the frame b, so that the
chains n become slack. At the same time the part e of the load platform presses with
its wedge-shaped surfaces, hetween the catches d and forces these to the outside, so
that they engage with the guides m m or bear against the shaft timbering, the entire
weight being thus caught. The engagement takes place in the same manner if the
rods carrying the load break.
A slight modification is shown in Figure 4, in which in lieu of two catches d d four
of them are so arranged that every two of the same embrace one of the cage guides.
In case a rope breaks they move towards each other pressing firmly against the said
guides in.
Having now particularly described and ascertained the nature of the 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 :-
Safety apparatus for the cages of hoists, lifts and other elevators characterized by
the formation of the cage in two parts, one of which (a) is suspended directly, or
through the medium of bearing springs, from the rope which carries the load, and the
other () provided with the wing-shaped catches the said apparatus operating in
such a manner that when the rope breaks the parts a and b are displaced relatively
to each other so that the load is firmly held by the catching mechanism.
Dated this 28th day of February 1887.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.

page_text: Date of Application, 28th Feb., 1887.
Specification Accepted, 29th Mar., 1887.
Germany.]
Improvements relating to Safety Apparatus for the Cages of Hoists,
Lifts, and the like.
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 improved apparatus for preventing the cages of hoists, lifts
and other elevators from falling in case of accident.
The safety appliances heretofore employed are subject to two defects: they use
springs which are uncertain in their action, and these springs are placed at the upper
part of the cage so that they do not afford any protection against breakage below the
safety apparatus.
To obviate these defects, I provide the improvements hereinafter described.
In the accompanying drawing.
Figure 1 is an elevation of a cage provided with the improved apparatus, the latter
being shown in its inoperative position.
Figure 2 is a view similar to Figure 1 but showing the safety mechanism in its
operative position.
Figure 3 is a view of a detail.
Figure 4 illustrates a modification.
According to the said invention the cage is formed in two parts which can be
displaced relatively to each other. The portion a of the bottom adapted to carry the
load is suspended from rods which carry the cross bar g provided with the eye
bolt h, and the guide frame b having the guides o and the wing-shaped catches d d.
When the rope is unbroken the two parts of the cage are in the position shown in
Figure 1.
Here the guide frame b with the plates serving as guides for the rods !
bears upon the platform a and participates in its motions.

page_text: The pivotted catches d d on the lower' part of the guide frame are also drawn up by
the chains n so that their teeth are removed from the cage guides m.
If the rope breaks, the whole cage slides down a short distance and the weighted
levers drop and press their ends into contact with the guides m. Owing to this
breaking action of these levers the frame b by reason of its comparatively light weight
is retarded. The platform a then moves slightly relatively to the frame b, so that the
chains n become slack. At the same time the part e of the load platform presses with
its wedge-shaped surfaces, between the catches d and forces these to the outside, so
that they engage with the guides m m or bear against the shaft timbering, the entire
weight being thus caught. The engagement takes place in the same manner if the
rods carrying the load break.
A slight modification is shown in Figure 4, in which in lieu of two catches d d four
of them are so arranged that every two of the same embrace one of the cage guides.
In case a rope breaks they move towards each other pressing firmly against the said
guides m.
Having now particularly described and ascertained the nature of the 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 :-
Safety apparatus for the cages of hoists, lifts and other elevators characterized by
the formation of the cage in two parts, one of which (a) is suspended directly, or
through the medium of bearing springs, from the rope which carries the load, and the
other () provided with the wing-shaped catches d the said apparatus operating in
such a manner that when the rope breaks the parts a and b are displaced relatively
to each other so that the load is firmly held by the catching mechanism.
Dated this 28th day of February 1887
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.