IMPROVEMENTS IN AND CONNECTED WITH VALVE APPARATUS SPECIALLY APPLICABLE TO HYDRAULIC LIFTS BUT ADAPTED ALSO FOR " OTHER PURPOSES
Year: 1884

page_text: PROVISIONAL 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 said invention for " IMPROVEMENTS IN AND CONNECTED WITH VALVE APPARATUS
SPECIALLY APPLICABLE TO HYDRAULIC LIFTS BUT ADAPTED ALSO FOR
"
OTHER
PURPOSES 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:-
The object of this invention is to operate valves and other devices easily and
with precision, and this is effected by the use of apparatus whereby the power of
the motor fluid, or other fluid under pressure, is made the means of shifting the
valve, and whereby the latter is arrested automatically at any desired point.
In many classes of machinery it is desirable to shift valves, rods, or other devices
with ease and rapidity, to bring them nicely, exactly, but quickly to the required
positions.
To effect these objects I combine with a tube a piston and cylinder containing
such piston, and ports and passages arranged so that the shifting. of a small
supplemental valve operated by a rod or spindle or otherwise, will regulate the
application of a motor fluid to the piston and thereby change the position of the
main piston and its appurtenances. I also so construct the parts that as the piston
comes to its proper position, the ports and passages will be closed, thereby cutting
off the flow of the fluid by which it is actuated.
These parts will now be described in connection with a chest, closed at the top
adapted to communicate through ports with the circulating pipes of an elevator
cylinder, and having at the bottom a discharge port.
The main. valve may be shifted to open and also to cut off communication
between the ports or to open one of the ports to the discharge. .
The valve spindle is hollow and secured at the upper end to the piston which
(if the operating fluid is not at a greater pressure-than that governed by the main
valve) is-larger in diameter than the said valve. The piston slides in the upper end
of the chest and has two annular passages, the first communicating through a port
with the space below or at one side of the piston and the latter through a second,
port with the space above the piston.

page_text: By admitting pressure to one or the other side of the piston, the main valve is
shifted, and this is effected by a supplementary valve consisting of a cylinder and
disc upon a hollow stem, open at both ends and connected to the end of the
valve rod.
The main spindle constitutes a cylindrical lining or bushing in which the
supplemental valve slides, and is perforated at points opposite the annular passages
before referred to the cylindrical lining being of such a width that it can close the
openings leading to the second annular passage the disc always being above the
first annular passage.
When the parts are in this position the lower port of the main cylinder is in
communication with the discharge port of the same, the motor fluid (in this case
water from the upper port) is below the piston, and also confined in the space above
it, so that it remains stationary.
If now the valve rod is carried downward until the two annular passages are put
in communication the water will flow through the port in the piston before men-
tioned the two annular passages and the second port into the space above the
piston and will act upon the upper face of. it and (bearing at the same time upon
the upper end of the main valve) will carry the piston and valve downward.
The downward motion of the parts will continue until the second annular passage
is opposite to, and its openings closed by the cylinder when the flow of water to
the upper space will be arrested and no further movement of the main valve and
appurtenances can take place, thus bringing said valve to, and stopping it at a
point determined by the extent to which the supplemental valve has been moved.
When the main valve is to be raised the supplemental valve is moved upward
. until the second annular passage is in communication with the interior of the valve
epindle when the water from the upper chamber will flow out, and the piston will
move upward, under the pressure upon its lower face, until said passage is again
closed, the exact extent of the upward motion being thus precisely determined, by
the position to which the supplemental valve is set. It will be apparent that but
little exertion is necessary to move this valve and that such movement is sufficient
to insure the shifting of a main valve requiring for its direct operation a power
much greater than any that could be applied to this supplemental valve. Said valve
'may be moved by different appliances for instance a pinion may be employed
gearing with a rack, on the valve rod and secured to a stem extending to the
outside of the casing where it may be provided with a lever, crank, or pulley to
receive an operating belt or rope.
While I have described a construction whereby the pressure of the fluid in the
same chest with that controlled by the main valve is the means of moving the
piston, a slight change in the construction will enable me to move the piston by a
different body of fluid the piston chamber being cut off from the main valve.
I do not confine myself to the precise construction of the supplemental valve and
arrangement of ports and passages as this will vary with the construction of the
apparatus and it will be evident that the chest and its appliances may be vertical
or borizontal.
It will further be apparent that the fluid may be conducted to opposite sides of
the piston through ports and passages made in the supplemental valve instead of in
the piston it only being necessary that they be so arranged as to permit the motor
fluid to pass to one side or the other of the piston after the valve is shifted and to
be closed as the piston reaches its position.
The piston may be connected to any part of an apparatus which it is desired to
shift from time to time.

page_text: 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 VALVE
APPARATUS, SPECIALLY APPLICABLE TO HYDRAULIC LIFTS BUT ADAPTED ALSO FOR
OTHER PURPOSES 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:-
The object of this invention is to operate valves and other devices easily and
with precision, and this is effected by the use of apparatus whereby the power of
the motor fluid or other fluid under pressure, is made the means of shifting the
valve, and whereby the latter is arrested automatically at any desired point. To
clearly explain the invention, reference is made to the accompanying drawings
which forin part of this specification and in which
Figure 1. is a sectional elevation of an elevator valve illustrating the improve-
ment and
Figure 2. is a view showing the parts in a different position.
In many classes of machinery it is desirable to shift valves, rods, or other
devices with ease and rapidity, to bring them nicely, exactly, but quickly to the
required positions.
To effect these objects I combine with a tube D, a piston B and cylinder con-
taining such piston and ports and passages arranged so that the shifting of a small
supplemental valve operated by a rod or spindle l, or otherwise will regulate the
application of a motor fluid to the piston and thereby change the position of the
main piston and its appurtenances. I also so construct the parts that as the piston
comes to its proper position the ports and passages will be closed, thereby cutting
off the flow of the fluid by which it is actuated.
In the drawing, these parts are shown in connection with a chest C closed at
the top adapted to communicate through ports bb' with the circulating pipes of
an elevator cylinder, and having at the bottom a discharge port 6 The main
valve A may be shifted to open and also to cut off communication between tho
ports b, b¹ or to open one of the ports b to the discharge 6 The valve spindle D
is hollow and secured at the upper end to the piston B which (if the operating
fluid is not at a greater pressure than that governed by the main valve A) is larger
in diameter than the said valve A. The piston slides in the upper end of the
chest C and has two annular passages d. e. the first communicating through a portf
with the space below or at one side of the piston, and the latter through a second
port f1 with the space above the piston. By admitting pressure to one or the
other side of the piston B, the main valve A is shifted, and this is effected by a
supplementary valve E consisting of a cylinder h and disc h¹ upon a hollow stem k
open at both ends and connected to the end of the valve rod l.

page_text: The main spindle D constitutes a cylindrical lining or bushing in which the
supplemental valve E slides, and is perforated at points opposite the annular
passages d. e., the cylinder h being of such a width that, when in the position
shown in Fig 1,. it can close the openings leading to the second annular passage e
the disc h¹ always being above the first annular passage d.
When the parts are in this position, the ports 61 63 are in communication, the
motor fluid (in this case water from the port b) is below the piston B, and also
confined in the space x above it, so that it remains stationary. If now; the valve
rod is carried downward until the two annular passages d and e are put in
communication, as in Fig 2, the water will flow through the port f, passages d and e,
and port into the space x, and will act upon the upper face of the piston and
(bearing at the same time upon the upper end of the valve A) will carry the piston
and valve downward.
The downward motion of the parts will continue until the passage e is opposite
to and its openings closed by the cylinder h, when the flow of water to the space
will be arrested and no further movement of the valve A and appurtenances can
take place, thus bringing said valve A to, and stopping it at a point determined by
the extent to which the valve E has been moved. When the valve A is to be
raised the valve E is moved upward until the passage e is in communication with
the interior of the spindle D when the water from the chamber will flow out, and
the piston B will move upward under the pressure upon its lower face, until said
passage e. is again closed the exact extent of the upward motion being thus
precisely determined by the position to which the valve E is set It will be
apparent that but little exertion is necessary to move this valve E, and that such
movement is sufficient to insure the shifting of a main valve requiring for its
direct operation, a power much greater than any that could be applied to the
supplemental valve E. Said valve E may be moved by different appliances,
for instance, a pinion m¹ may be employed gearing with a rack n', on the valve rod,
and secured to a stem m extending to the outside of the casing where it may be
provided with a lever, crank or pulley to receive an operating belt or rope.
While
I have described a construction whereby the pressure of the fluid in the same chest
with that controlled by the main valve is the means of moving the piston B,
a slight change in the construction will enable me to move the piston by a different
body of fluid the piston chamber being cut off from the main valve.
I do not confine myself to the precise construction of the valve E and arrange-
ment of ports and passages as this will vary with the construction of the apparatus
and it will be evident that chest C and its appliances may be vertical or horizontal.
It will further be apparent that the fluid may be conducted to opposite sides of
the piston through ports and passages made in the valve E instead of in the
piston, it only being necessary that they be so arranged as to permit the motor
Buid to pass to one side or the other of the piston, after the valve is shifted, and
to be closed as the piston reaches its position.
The piston B may be connected to any part of an apparatus which it is desired
to shift from time to time I do not however confine myself to the precise con-
struction and arrangement shown.
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 correspondents I declare that what I claim is
1. The combination of a casing to which a motor fluid is admitted, a piston
sliding within the same, and an adjustable valve with ports and passages whereby
the fluid may be brought to act upon one or other side of the piston to move the
same, and appliances whereby said valve may be set by hand to any desired
position, the valve piston, and ports being relatively constructed and arranged to
insure the closing of the valve ports and arrest of the piston when it reaches the
point at which the yalve is set.

page_text: 2. The combination of a cylinder having ports, a valve and a piston connected
thereto, and a valve appliance provided with ports and passages arranged to be
opened on the shifting of the valve to admit the fluid to one side or the other of
the piston, and to be closed as the piston reaches the position determined by that
of the valve substantially as specified.
3. The combination of the main valve, piston of greater area, both connected by
a tube within one chest, and a supplemental valve arranged within said tube, and
ports and passages arranged substantially as set forth, whereby the motor fluid is
brought to bear on the opposite faces of the piston according to the direction in
which the supplemental valve is shifted, substantially as set forth.
4. The combination of the case, closed at one end, open at the other, main
valve A, tubular stem D, containing a supplemental valve E, and rod 2, piston B,
fixed to the stem D, and passages and ports d, e, f, ƒ¹, substantially as set forth.
Dated this twenty second day of June AD 1885