IMPROVEMENTS IN AND CONNECTED WITH ELEVATORS OR LIFTS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
SE
I, PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex, Fellow of the Institute of Patent Agents, do hereby declare the nature
of said invention for IMPROVEMENTS IN AND CONNECTED WITH ELEVATORS OR
LIFTS' a communication to me from abroad by Otis Brothers and Company
(Incorporated) of 348 Broadway in the City County and State of New York,
United States of America, Manufacturers, to be as follows:-
This invention consists of certain devices fully described hereinafter whereby
the opening of any door leading to an elevator well will result in arrosting the
movement of the cage-and in so locking the operating rope that the cage cannot
be started until the door is closed. The invention further consists in means
whereby each door is locked automatically at the inside and automatically released
only when the cage is in position opposite such door-and further in appliances for
starting the cage from the landings when the doors are closed.
The cage may be of any suitable construction, and operated by any of the usual
appliances, and has a hand rope, passing alongside of, or through it connected to
the valve or other device by means of which the movements of the cage are
controlled.
The hand rope also passes through or adjacent to a clamp device which is so
constructed in any manner as to clutch and release the rope. In the first case the
rope is connected immovably with the cage so that the further motion of the latter
in either direction will move the rope and close the valve, in the second case the
cage can slide up and down without moving said rope as is usual in elevators.
A clamp device which has proved to be effective consists of a hollow case, through
an opening in one end of which, the rope passes, and a serrated grooved roller or
wheel which when brought against the rope and carried up or down, will be forced
into contact with a serrated inclined face in the case and jammed between the
latter and the rope, thus binding the rope against the opposite side of the opening
and clamping it securely.

page_text: [
Normally the roller is out of contact with the rope, and is thrown towards the
latter, by any suitable means whenever a door of the well is open-so that no
movement of the cage can result until such door is closed. Many different devices
may be employed for thus controlling the movements of the clutch. By one
method the wheel or roller turns on a pin passing through a flat extension on a
rod having a sliding and jointed connection with second rod extended through and
guided by the case. A spring bearing against a shoulder on said second rod
suffices to throw both rods outward and a lighter spring, bearing on a shoulder of
the first, rod will, when the second rod is moved inward, carry the wheel against
the rope, the jointed connection then permitting said wheel or roller to move up or
down according to the direction the case is travelling. In either case the clamping
of the rope and its movement in either direction operates the valve to stop the
motion of the cage.
The end of the second rod extends beyond the cage and carries a friction roller
and within the well adjacent to cach door is arranged a movable plate which is
hinged at one edge a weight or a spring tending to press said plate against the
roller force inward the second rod and stop the cage.
Each plate is combined with devices which when the door is closed throw said
plate back and when the door is open permit the plate to move inward against the
friction roller. Thus each door may carry a bracket which, as the door is closed,
strikes the end of a sliding rod, connected to the plate and thus moves back the
latter.
When the door is opened the removal of the bracket from contact with the rod
permits the plate to swing toward the cage, push in second rod and thus arrest the
motion of the cage.
It will be apparent that different appliances may be used to move the plate in
and out on the closing or opening of the door, and that instead of using a plate,
any other device that by its different positions, (resulting from opening or closing
the door,) will operate the clamp to cause it to seize or release the rope may be
employed.
Where a sliding door is used in connection with the plate the latter may be
operated by a rod having stops at the ends, which are struck by a pin or bracket
upon the door as the latter is opened and closed.
By the use of the detent or clamp, and devices operated on the opening or
closing of the doors as above described, the stopping of the cage opposite any door
that may be open is thus insured, not only preventing accidents but also
facilitating the operation of elevators in private residences where the cage must be
often stopped and stated by parties on the landings.
It will be seen that a cage when arrested opposite an open door cannot be started
by any parties at other landings.
It will further be seen that if (as sometimes happens) the car settles it carries
the hand rope with it and soon shuts the valve, and that a like result ensues if the
car rises of itself from any cause.
While the car is thus stopped and locked if a door is opened when the car is
passing, this automatic action does not in the least interfere with the ordinary
functions of the hand rope when the doors are all shut.
Each door is locked when closed by a detent or catch hung within the well and
engaging with a hasp on the door This detent may be a hell crank lever, the
horizontal arın of which engages with the basp, while the vertical arm carries a
friction stud that engages with a long rib upon the cage as the latter approaches
the door either way, so as to be thereby swung to one side thus releasing the
detent from the basp and permitting the door to be opened from the landing or
from the cage, but only when the latter is opposite the door.
In private residences and places where it is not advisable to maintain an
attendant in the cage the latter must be started and stopped by parties on the
“landings outside of the well,

page_text: For this purpose ropes may be employed passing over guide pulleys to a
supplemental valve cable and extended in opposite directions and so attached to
the cable, that a pull upon one rope will draw down the cable and a pull on the
other will raise the cable, with the same effects as result from raising and lowering
the usual band rope.
If desired the cable may be a continuation of the hand rope passing round
sheaves at the bottom and top of the well.
A lever or other device may be substituted for the ropes.
Each rope is provided at the end with a weight to keep it taut and such weight
may be made in the form of a "pull handle" which consists of a weight having
an egg shaped body perforated longitudinally to receive the end of the rope and
the knot thereon, and with an eye or yoke forming part of a block that screws
into one end of the opening in the body and covers the knot on the
rope.
An annular recess in the periphery of the body receives a rubber ring that acts
as a guard to prevent the pulls from marring each other or the walls.
Ti Finhth da of Ontahan 1001

page_text: COMPLETE SPECIFICATION.
:
I PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents do hereby declare the nature
of the said invention for IMPROVEMENTS IN AND CONNECTED WITH ELEVATORS
OR LIFTS a communication to me from abroad by Otis Brothers and Company
(Incorporated) of 348 Broadway in the City, County and State of New York!
United States of America, Manufacturers and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
This Invention consists of certain devices fully described hereinafter, whereby
the opening of any door leading to an elevator well will result in arresting the 1
movement of the cage, and in so locking the operating rope that the cage cannot
be started until the door is closed. The invention further consists in means
whereby each door is locked automatically at the inside, and automatically released
only when the cage is in position opposite such door, and further in appliances for
starting the cage from the landings when the doors are closed.
To clearly explain the invention reference is made to the accompanying
drawings which form part of this specification, and in which.
Fig. 1 represents, in part sectional elevation, a portion of a building wherein the
well and doors leading thereto are situated.
1
Fig. 2. is a sectional plan on the line 1. 2 Fig 1 the cage being below the 2
section plane.
Fig 3. is a cross sectional elevation on the line 3. 4 Fig 1.
Fig. 4 is an elevation showing a modification.
Fig. 5. is a sectional plan on the line 5-6. Fig 4.
Fig. 6 is a section of one of the pulls.
Fig. 7 is a detailed section of the clutch device.
A. A. represent the floors of a building; C, the doors closing the openings B
leading to the well, which doors may be either hinged or sliding doors. The cage
may be of any suitable construction, and operated by any of the usual appliances.
2
E is the hand rope passing alongside of or through the cage and connected to the 3
valve or other device by means of which the movements of the cage are controlled.
The hand rope also passes through or adjacent to a clamp device W which is so
constructed in any manner as to clutch and release the rope. In the first case the
rope is connected immovably with the cage so that the further motion of the latter
in either direction will move the rope and close the valve; in the second case, the 3
cage can slide up and down without moving said rope as is usual in elevators. A
clamp device which has proved to be effective, consists of a hollow case F, through
an opening in one end of which, the rope passes, and a serrated grooved roller or
wheel b which when brought against the rope and carried up or down will be
forced into contact with a serrated inclined face y or y¹ in the case, and jammed 4
between the latter and the rope, thus binding the rope against the opposite side of
the opening and clamping it securely.
Normally the roller bis out of contact with the rope and is thrown towards the
latter by any suitable means whenever a door of the well is open, so that no

page_text: movement of the cage can result until such door is closed. Many different devices
may be employed for thus controlling the movements of the clutch As shown, the
wheel or roller turns on a pin passing through a flat extension on a rod d. having a
sliding and jointed connection with a second rod d' extended through and guided
by the case A spring e' bearing against a shoulder on the rod d suffices to throw
both rods outward, and a lighter spring e bearing on a shoulder of the rod d. will,
when the rod d' is moved inward, carry the wheel against the rope, the jointed
connection then permitting the wheel or roller b to move up or down according to
the direction the cage is travelling. In either case the clamping of the rope and
its movement in either direction operates the valve to stop the motion of the cage.
The end of the rod d' extends beyond the cage and carries a friction roller f
and within the well adjacent to each door is arranged a moveable plate G which,
as represented, is hinged at one edge, and a weight, or a spring / tends to press
tho said plate G against the roller, thus forcing inward the rod d¹ and stopping the
cage. Each plate G is combined with devices which when the door is closed throw
said plate G back to the position shown in dotted lines Fig. 2., and when the door
is open permit the plate to move inward against the friction roller f. Thus each
door may carry a bracket j which, as the door is closed, strikes the end of a sliding
rod connected to the plate G and thus moves back the latter.
When the door is opened the removal of the bracket from contact with. the
rod permits the plate g to swing toward the cage, push in the rod d¹ and thus
arrest the motion of the cage. It will be apparent that different appliances may
be used to move the plate Ğ in and out on the closing or opening of the door, and
that instead of using a plate, any other device that by its different positions
(resulting from opening or closing the door) will operate the clamp to cause it to
seize or release the rope E, may be employed. Where a sliding door is. used in
connection with the plate G, the latter may be operated by a rod k having
stops 88 at the ends which are struck by a pin or bracket upon the door as tho
latter is opened and closed as shown in Figs 4 and 5.
By the use of the detent or clamp, and devices operated on the opening or closing
of the doors as above described, the stopping of the cage opposite any door that
may be open, is thus insured, not only preventing accidents, but also facilitating
the operation of clevators in private residences, where the cage must be often
stopped and started by parties on the landings. It will be seen that a cage when
arrested opposite an open door cannot be started by any parties at other landings.
It will further be seen that if (as sometimes happens) the car settles, it carries the
hand горо with it, and soon shuts the valve, and that a like result ensues if the car
rises of itself from any cause. While the car is thus stopped and locked if a door
is opened when the car is passing, this automatic action does not in the least
interfere with the ordinary functions of the hand rope when the doors are all shut.
Each door is locked when closed, by a detent or catch H-hung within the well and
engaging with a hasp g on the door.
This detent as shown is a bell crank lever, the horizontal arm of which engages
with the hasp, while the vertical arm carries a friction stud that engages with a
long rib, n upon the cage as the latter approaches the door either way, so as to be
thereby swung to one side, thus releasing the detent from the hasp and permitting
the door to be opened from the landing or from the cage, but only when the latter
is opposite the door. In private residences and places where it is not advisable to
maintain an attendant in the cage, the latter must be started and stopped by
parties on the landings, outside of the well.
For this purpose ropes LL¹ may be employed passing over guide pulleys m m¹ to
a supplemental valve cable N and extended in opposite directions and so attached
to the cable, that a pull upon one rope will draw down the cable and a pull on the
other will raise the cable, with the same effects as result from raising and lowering
the usual hand rope. If desired, the cable N may be a continuation of the band
rope, passing round sheaves at the bottom and top of the well. A lever or other
device may be substituted for the ropes L L' Each rope is provided at the end
:

page_text: 66
with a weight to keep it taut, and such weight may be made in the form of a
'pull handle" which consists of a weight having an egg shaped body perforated
longitudinally to receive the end of the rope, and the knot thereon and with an
eye or yoke p forming part of a block q, that screws into one end of the opening in
the body and covers the knot on the rope, all as shown in detail in Fig 6.
An annular recess in the periphery of the body receives a rubber ring r. that
acts as a guard to prevent the pulls from marring each other or the walls.
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
1. A stop device for elevators, consisting of a clamp arranged upon the cage
in proximity to the hand rope, and appliances constructed and arranged to
automatically operate said device, and clutch the rope whenever the 'cage
approaches an open door, as set forth.
2. The combination in an elevator, of a clamp upon the cage, and devices 1
connected, to be operated by the door, and arranged within the well to strike the
clamping device and insure the clutching of the rope when a door opposite the cage
is opened, as specified.
3. The combination with the cage and its rope, of a case having inclined
faces y y, a wheel or roller arranged between the rope and said faces, and
appliances whereby to throw the roller to or from the rope according to the
position of the door opposite which the cage is travelling, substantially as set forth.
4. The combination with the case F and its opening 2, and inclined faces y. y¹ of
the rods d. d jointed loosely together, the pulley b carried by the rod d. And
springs e e¹ proportioned as set forth.
5. The combination with the cage and its clamp and with the doors of the well
of moveable plates G, arranged adjacent to the doors in the well, and devices
whereby a plate is brought into position to be struck by the arm of the clamp
when a door is open, substantially as set forth.
6. The combination with the doors leading to the well, and arranged to be opened
only from within the cage, of self latching catches within the well, and a rib upon
the cage arranged to unlatch each catch as the cage is brought opposite the door
substantially as specified.
7. The combination with the cage, of a supplemental valve operating cable and
ropes L L or their equivalents, leading therefrom in different directions and
extending to the landings, substantially as described.
8. The combination with the ropes L. L¹, of weights formed with pulls, as
specified.
Dated this nineteenth day of June & D 1995