Year: 1887

page_text: Date of Application, 25th Jan., 1887
Complete Left, 25th Oct., 1887
Complete Accepted. 25th Nov., 1887
I, EDWARD BAYZANI ELLINGTON, of Palace Chambers, Bridge Street. Westminster
in the County of Middlesex, Engineer, do hereby declare the nature of this invention
to be as follows :-
My invention relates to lifts such as are employed in buildings for communicating
from floor to floor, these being worked in the manner of hydraulic cranes by ropes or
chains passing over pullies and attached to the piston or plunger of a hydraulic
cylinder.
The chief objects of my invention are to arrange in a compact and convenient
manner the hydraulic cylinder and its attachments; and to provide for safety in case
of any of the connections from the plunger to the cage yielding or breaking. 1 place
the cylinder vertically in the shaft, making it as long as possible, so as to avoid as
much as possible multiplication of the stroke by pullies or otherwise; and I fit it
with a differential plunger passing through packings accessible externally at both
ends of the cylinder, the upper part of the plunger being smaller than the lower part.
so as to furnish a differential area on which the water pressure acts to move the
plunger down. On the upper end of the plunger I mount in the usual way multiplying
pullies or gear from which the ropes or chains, of which there are preferably four,
pass over guide pullies at the upper part of the shaft and are attached to opposite ends
of rocking crossheads pivotted to the cage preferably under its floor. To the lower
end of the plunger I attach counterweights and I also attach thereto multiplying
pullies or drums from which an independent rope passes up, over a pulley at the top,
and down to a sliding wedge arranged in the guides of the cage. Should the attach-
ments of the cage to the plunger give way, the cage would begin to descend more
rapidly than the wedge which is commanded by the independent ropes, and con-
sequently the wedge would in that case act as a brake, retarding or entirely stopping
the cage. To the pivotted crossheads to which the main ropes or chains of the cage
are attached, I apply indicators which shew to the attendant in the cage if either of
these crossheads has rocked out of level, thereby warning him of danger by apprising
him that one or other of the ropes or chains has yielded unduly or broken.
Date this 25th day of January 1887.
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, EDWARD BAYZAND ELLINGTON of Palace Chambers, Bridge Street, Westminster,
in the County of Middlesex, Engineer, 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 relates to lifts such as are employed in buildings for communicating
from floor to floor, these being worked in the manner of hydraulic cranes by ropes
or chains passing over pullies and attached to the piston or plunger of a hydraulic
cylinder.
The chief objects of my invention are to arrange in a compact and convenient
manner the hydraulic cylinder and its attachments; and to provide for safety in case
of any of the connections from the plunger to the cage yielding or breaking, as I will
describe referring to the accompanying drawings.
Fig. 1 is a vertical section of the lift shaft shewing the general arrangement of the
cage, the hydraulic cylinder and their connections.
Fig. 2 is a vertical section and Fig. 3 is an elevation of the hydraulic cylinder and
its pulleys.
Fig. 4 is a side view, Fig. 5 an end view, and Fig. 6a plan of the cage with
means of arresting it in case of accident.
I place vertically in or at the side of the shaft the hydraulic cylinder A making it
as long as possible, so as to avoid as much as possible multiplication of the stroke by
pullies or otherwise, and I fit it with a differential plunger B B' passing through
packings accessible externally at both ends of the cylinder A, the upper part B of the
plunger being smaller than the lower part B¹ so as to furnish a differential area on
which the water pressure acts to move the plunger down. On the upper end of the
plunger BI mount in the usual way multiplying pullies or gear from which the
ropes or chain, of which there are preferably four, pass over guide pullies D at
the upper part of the lift shaft and are attached to opposite ends of rocking cross-
heads E pivotted to the cage.
To the lower end of the plunger B, 1 attach counterweights F, and I also attach
thereto multiplying pullies or drums G from which independent rope- pass up, over
guide gulleys H at the top of the shaft and down to sliding wedges K arranged in the
guides of the cage as shewn in Figs. 4, 5 and 6. The wedges K are usually kept
down just clear of the guides L by weights M, but, should the attachments of the cage
to the plunger B, give way, the cage would begin to descend more rapidly than the
wedges K, which are commanded by the independent rope worked from B¹, and
consequently the wedges would in that case move upwards relatively to the cago and
act as a brake retarding or entirely stopping the cage.
When the guides are of wood, as indicated in the drawings, the faces of the wedges
may be serrated as shown so as to take a firm grip of the guides.

page_text: Obviously, whether the hydraulic cylinder is arranged vertically as shewn in the
drawings or in any other position, the brake wedges K may be applied to the
cage as
described, the ropes to which they are attached heing connected to the working
plunger so as to move uniformly with the suspending ropes or chains.
To the pivotted crossheads E, to which the main ropes or chains of the cage are
attached, I apply indicators N one or other of which projecting through a hole in the
roof of the cage may shew to the attendant in the cage if either of these crossheads
has rocked out of level, thereby warning him of danger by apprising him that one or
other of the ropes or chains has yielded unduly or broken.
•
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. Arranging in or at the side of a lift shaft a long vertical hydraulic cylinder
having a differential plunger carrying weights and multiplying gear from which gear
ropes or chains pass in duplicate over guide pullies at the head of the shaft and are
attached in pairs to opposite ends of rocking crossheads pivotted on the cage,
substantially as described.
2. In combination with the hydraulic cylinder and the ropes or chains which work
the cage of a lift, an independent set of ropes, which are caused to move uniformly
with the suspending ropes or chains, and are attached to brake wedges arranged on
the cage, substantially as and for the purpose set forth.