Improvements in and relating to Hoists and the like. to be
Year: 1895

page_text: Date of Application, 18th Feb., 1895
Complete Specification Left, 23rd Oct., 1895-Accepted, 7th Dec., 1895
Improvements in and relating to Hoists and the like.
to be as
I JAMES WILSON MARTIN, Engineer and Machinery Agent of 29 Corporation
Street Manchester, do hereby declare the nature of this invention
follows:-
My improvements in hoists and the like consists of an arrangement in connection
with the starting and stopping gear of such hoists, whereby it is impossible to set
in motion the hoist during the times that persons are entering or leaving the
hoist cage.
For this purpose I employ a hand rail or safety bar hinged at a convenient
height at one side of the entrance to the hoist; and I fit at one end a joint to
which is attached a connecting link, rope, or other suitable connection; which is
attached to one or more automatic clips or catches formed as a grip; and so
arranged that when the rail or bar is raised to a vertical position-for the passage
of persons to and from the cage-the clip or clips automatically grips and holds
fast the hand rope controlling the motion of the hoist.
I also attach to the apparatus a U shaped shield, in length about three-fourths
the height of the cage, or of other convenient length; and so arranged that when
the gripping clip or clips grip the hand rope, this shield falls forward at the
same time over the rope and so covers it that it cannot be handled to set the
hoist in motion during the time that persons are entering or leaving the cage
of same.
I may also use another similar safety bar at a convenient height from the floor
of the cage; about the same length, and say three to six inches deep. This bar is
connected to the upper bar in a suitable manner, so that both may be raised or
lowered at the same time.
The object of the bottom bar is to form a gate for preventing injury to the feet
of persons in proximity to same, as the cage passes each landing.
To counterpoise the weight of the safety bar or bars, I attach a balance weight
either at the end of same, or I fix a rope sheave inside the cage near the top,
through which I pass a rope-one end of which is attached to the safety bar and
the other to a balance weight.
In cases where only the hand rope is on one side, I fix one gripping clip at the
top of the building, and the other at the bottom; and I connect them from inside
the cage by employing a single or endless rope which is attached to the gripping
clips, and worked automatically from the safety bar or bars inside the cage. In
some cases I may also use the gripping clips both inside and outside the cage at
the same time.
1005

page_text: I JAMES WILSON MARTIN Engineer and Machinery Agent of 29 Corporation
Street Manchester 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 improvements in hoists and the like consists of an arrangement in connection
with the starting and stopping gear of such hoists, whereby it is impossible to set
in motion the hoist during the times that persons are entering or leaving the
hoist cage.
For this purpose I employ a hand rail or safety bar hinged at a convenient
height at one side of the entrance to the cage; and I fit at one end a joint to
which is attached a connecting link, rope or other suitable connection; which is
attached to one or more automatic clips or catches formed as a grip, and so
arranged that when the rail or bar is raised to a vertical position-for the passage
of persons to and from the cage-the clip or clips automatically grips and holds
fast the hand rope controlling the motion of the hoist.
I also attach to the apparatus a U shaped shield, in length about three-fourths
the height of the cage, or of other convenient length; and so arranged that when
the gripping clip or clips grip the hand rope, this shield falls forwards at the
same time over the rope, and so covers it that it cannot be handled to set the
hoist in motion during the time that persons are entering or leaving the cage
of same.
I may also use another similar safety bar at a convenient height from the floor
of the cage; about the same length, and say three to six inches deep. This bar is
connected to the upper bar in a suitable manner, so that both may be raised or
lowered at the same time.
The object of the bottom bar is to form a gate for preventing injury to the feet
of persons in proximity to same, as'the cage passes each landing.
To counterpoise the weight of the safety bar or bars, I attach a balance weight
either at the end of same, or I fix a rope sheave inside the cage near the top;
through which I pass a rope-one end of which is attached to the safety bar, and
the other to a balance weight.
In cases where the hand rope is only on one side, I fix one gripping clip at the
top of the building, and the other at the bottom; and I connect them from inside
the cage by employing a single or endless rope which is attached to the gripping
clips and worked automatically from the safety har or bars inside the cage.
In some cases 1 may also use the gripping clips both inside and outside the cage
at the same time.
And in order that the said invention may be fully understood, and readily
carried out and into effect; I shall now proceed more particularly to describe the
same; and for that purpose shall refer to the several figures on the annexed sheets
of drawings, wherein the same letters of reference indicate corresponding parts in
all the figures.
Fig. 1 is an elevation of one arrangement of my invention, showing the clip or
gripper out of contact with the hand rope-as when the cage is in motion.
Fig. 2 is an elevation of the same arrangement showing the clip or gripper in
contact with, and firmly holding the hand rope; as when the cage is stationary.
Fig. 3 is a section of the gripper when in the position indicated in Fig. 2.
In these views "A1" is the cage to which are pivotted at "d" and "
more safety bars "a, b" connected together by rod "c." One end of the upper bar
"
e two or

page_text: falls into an open staple "a" fixed on the cage; and the other end is formed in
the shape of a slotted quadrant "f," in which slides the stud "g" attached to the
long Ushaped shield or gripper "h" which is connected by the links "k, k" to
hinges "j" attached to the cage
"A¹."
At one side of the hand rope "1"-
and stay
which controls the motion of the cage "A1"-I fix by brackets "m, m
bolts two or more grippers "n, n "formed of india-rubber or other suitable material,
and suitably recessed to receive the hand-rope "."
The action of this arrangement is as follows:
<6 h"
When the cage
"A1" is in motion, the safety bars or gate "a, 6" is put across the
entrance to the cage; and the action of so doing carries the shield gripper
away from the india rubber clips "n, n"; thus leaving the hand rope "/" quite
free for action. When the cage is arrested at a landing; before the passenger in
the cage can leave the same, or goods can be taken therefrom, it is necessary that
the safety bars "a, b" be raised to the position shown in Fig. 2 and Fig. 4-which
latter is a section of the gripper when in the position indicated in Fig. 2.
'The act of turning the bars " a. b" on pivots "d, e" lowers the slotted
quadrant "f," pulls inwards the stud " g," and the shield gripper
latter by this means forces the hand rope "" firmly against the india rubber
clips "n, n," and thus securely grips and holds fast the hand rope ""; so that the
cage cannot be set in motion again until the safety bars "a, b" have been again
placed in the position shown in Fig. 1.
"h";
which
Fig. 5 is an elevation of another arrangement of my invention, as when the cage
is in motion.
Fig. 6 is an elevation of the same arrangement, as when the cage is stationary.
Fig. 7 is a longitudinal section through the form of gripper used in this
arrangement.
Fig. 8 is a transverse section of this form of gripper, when in the position
indicated in Fig. 6.
Fig. 9 is a transverse section of the same gripper, when in the position indicated
in Fig. 5.
"
In these views, instead of using a slotted quadrant at one end of bar "a" I
connect this end " p by a rod "q" to a bell-cranked lever "8," pivotted to the
gripper box or casing "," through which the hand rope passes.
This box may be
fixed to the bottom of the cage as shown; or in any other desired and convenient
position on the walls, top or other part of the cage; or it may in some cases be
fixed so that the end "p" of bar "a" may be attached direct to one end of the
lever "8" without the intervention of rod " 9." "w, x are two india-rubber
cushions or buffers to the gripping plates U, V "which are suitably recessed as
shown to embrace the hand rope "." The gripping plate "u" and buffer "w "fit
into the box "t," which slides freely in casing ""; and is formed as shown, with a
slotted branch to receive one end of the lever " 8.
"
"
"
33
66 "
The action of this arrangement is such that when the cage "A1" is in motion,
and the safety bar "a" is across the entrance, the end "p" of the safety bar, the
rod "q" and lever " 8 draw the sliding box "t" and gripper plate U away
from the hand rope ""; which thus is left quite free for action as shown in Figs. 5
and 9. The act of raising the bar "a" depresses "p" and "q," turns lever "8";
and so slides the box "t" forwards, and forces gripper plate "u" and hand
rope " ("against the other gripper plate "v"; by which means the hand rope is
firmly gripped between the two gripping plates.
Figs. 10 to 14 show another arrangement of my invention nearly similar to the
preceding arrangement; but in this case two or more safety bars are used and the
eccentric or cam "81" fixed on bar "b" actuates the sliding box "t" and gripper
plate "u," in place of lever "s" in the preceding arrangement. The action is the
same in both arrangements.
In some cases I may use any desired combination of one or more parts of any of
the arrangements herein before described.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. In hoist cages a rope clip or gripping device connected to a hand rail
whereby the hoist hand rope is held securely by the clip on lifting the hand rail for
the purposes mentioned, and substantially as herein before described.
"
2nd. In hoist cages for the purposes mentioned the combination of a rope
gripper "U, V
attached by lever "," to connecting rod "q" and the hand
rail a as herein before described and shown in the drawings.
"
3rd. In hoist cages the combination of rope protector "h" attached to
links "k," and slotted quadrant "f" on hand rail "a"; substantially as
hereinbefore set forth, and shown in the drawings.
4th. In hoist cages the combination with the subject matter of the preceding
claims and india rubber buffers "w, x for the purposes set forth herein.
5th. The arrangement and combination of parts herein before described and
shewn in Figures 1 to 14 inclusive herewith, for the purposes and substantially as
herein before described and set forth.
Dated this 21st day of October 1895.
H. WALKER HILL,
2 Church Gate, Nottingham, Agent for the Applicant.