IMPROVEMENTS IN AUTOMATIC VALVE AND PISTON COCKS
Year: 1884

page_text: 'I THOMAS SEAVILLE TRUSS of 17 Alkindon Road Chiswick in the County of
Middlesex Professor of Natural Philosophy do hereby declare the nature of my
Invention for IMPROVEMENTS IN AUTOMATIC VALVE AND PISTON COCKS, to be as
follows:-
My said improvements consists, in the construction and arrangements of: parts,
and in the mechanical combinations for Valve and Piston Cocks: whereby motion
is communicated to the pistons, and valves connected thereto, to admit of the
transmission of fluid through such cocks: and also in the arrangements of time
holes, and time screws, and small release or relief plug cocks, and rotary valves,
and lift or slide valves, that are employed therein or therewith for releasing the
pistons in such valve and piston cocks: and regulating the quantity of fluid that
shall pass through them, for each opening of the valves with pistons attached,
according to the distance such valves are set to open, and the pressure exerted by
or on the fluid passing through such cocks; and also in the mechanical combinations
whereby such release or relief small plug cocks and valves are actuated, to admit
of them releasing the pistons from the pressure of the fluid acting on them, by
allowing it to escape by from or through them, that the pistons may move, and
the valves connected to them open for the transmission of fluid through such valve
and piston cocks: and for some purposes these mechanical combinations are so
arranged, that the motion of the piston for opening the valve, is also the closing
motion for the release plug cocks and valves, and by this action when the piston as
moved a given distance, it is again acted on by the fluid iu such cocks to close the
valves attached thereto, by the fluid passing by the time screws and through the
time holes to act on such pistons, and determine the distance the pistons shall move,
and such valves shall open, and thus regulate the quantity of fluid that shall pass
through such valve and piston cocks for each opening action of the same.
The first part of my said improvements consists, in constructing an oblong
circular box with two partitions in it to form three chambers, and to each end of
this box a movable cap is fitted, and to the centre chamber an inlet pipe is attached,
through which the fluid is admited into the box, and in one of the other chain bers
a discharge valve works, and to this chamber an outlet pipe is attached for the
fluid to pass out by, and in the other chamber a piston works, and from a point in
Dio17

page_text: this chamber clear of the travel of the piston a by pass passage is formed on the
outside of the box, to a point clear of the travel of the discharge valve in the
valve. chamber, and in the partition between the centre chamber and piston
chamber a small hole which I name a time hole is made, and a time screw is fitted
from the outside of the box to cross this time hole at right angles, by which the
fluid to pass through into the piston chamber is regulated. The valve and piston
are connected together by a spindle at the required distance apart, which spindle
passes through the partition of the piston chamber and that constitutes a guide for
the same and in the partition between the centre chamber and valve chamber an
orifice is formed, arround which within the valve chamber a suitable valve seat is
formed, on which the discharge valve acts, which valve is of less area than the
piston to which it is connected: and within the piston a small plug is fitted to form
a plug cock, which plug is constructed hollow for part of its length, and with one
or more passages made in it from the surface thereof into the hollow part at the
desired angles, and in the piston one or more similar passages are made at the
desired angles, and opening to the underside of the piston, the passage in such plug
and socket within the piston in which it works, are so arranged that for a given
portion of a revolution of such plug, there shall be a passage for the fluid from the
underside of the piston through the plug to the top of the piston, that the fluid
may escape therefrom, and pass out through the by pass passage formed on the
outside of the box, into the outlet pipe, and so pass away: and when such plug is
again moved another portion of a revolution, such passage shall be closed; and to
the piston a guide is attached that moves on a rod fixed in such piston chamber,
whereby the piston only moves in a given vertical line with its longitudinal centre.
In the cap on the piston chamber end of the box a spindle is fitted to work with
a given length within the piston chamber, and a given length outside the cap, and
to that end of the spindle outside the box, a knob or lever is attached to turn such
spindle, to communicate motion to the several moving parts to open the discharge
valve and on the end of this spindle that is within the piston chamber a loose
block is fitted to move, and part of the circumference of this loose block forms two
sides of a square or triangle, against one or both of which a spring or springs, or
other yielding force is fitted to act, to keep the lines of such square or triangle in
given positions, iu manner similar, to the spring in a pocket knife, that retains the
blade thereof in given positions; and in the other part of the circumference of this
loose block a groove is formed with a given width of base at the top, and converging
by two undulating lines to a narrow space at the bottom, and in this groove the
end of a lever works, which lever is fixed to the plug working in the piston, so
that at a given point of the motion of the loose block, motion is given by this lever
to the plug in the piston and another groove is also formed in the loose block
from the spindle on which it works, for about one fourth part of its circumference
for a pin that is fixed in the spindle to work in.
By these arrangements when the spindle working in the cap of the piston
chamber end of the box is turned for a given portion of the circle, the pin fixed
therein and working in the groove in the loose block, turns such loose block until
the angle of the two lines forming the two sides of a square or triangle are past
the centre line with, the spindle and the line of force from the spring, when the
force of such spring on the angle on such loose block completes the distance on the
circle such loose block is set to travel, and when the loose block as traveled to the
point that the spring comes into action to complete the travel of the loose block,
then one side of the groove in the circumference of the loose block acts on the end
of the plug lever to turn the plug, so that on the completion of the travel of the
loose block by the force of the spring, the plug is turned the required distance to
give a passage through the same, to release the fluid from the under side of the
piston, and thus release the piston from the pressure of such fluid, then the fluid
acting on the discharge valve forces the same open; and as during this movement
the piston must move the same distance as the discharge valve, the end of the plug

page_text: lever is drawn a given distanco down the groove in the circumference of the loose
block, and in its course turns the plug to close the release passage, after which tho
fluid passing through the time hole in the partition between the piston chamber
and the centre chamber acts on the piston, the area of which is greater than the
area of the discharge valve, therefore the pressure on the piston overcomes the
pressure on the discharge valve, and so closes such discharge valve in a given time,
according to the difference of such areas, and the distanco the discharge valve is
regulated to open, and the fluid regulated to pass through the time hole, and the
pressure exerted by or on the fluid: thereby regulating the quantity of fluid, that
shall pass through such valve and piston cocks for each opening of the dischargo
valves of the same.
The seccond part of my said improvements consist, in a modification of the
arrangements herein before described, by applying the small release plug cock in
the side of the piston chamber, at a point clear of the travel of the piston from tho
under side thereof, and substituting for the plug lever motion groove in the loose
block as herein before described, a fork of like form as such groove on the under
side of the piston, and fixing a crank pin on the end of the plug within the piston
chamber, for such fork to act on, and applying the loose block opening motion with
spring outside the box. The effect of this arrangement is the same as that herein
before first described, but in this case the fork on the piston acts on the crank pin
that is on the end of the plug to turn it to close the release passage.
The third part of my said improvements consist, in a modification of the
arrangements herein before described, by substituting for the release plug cock, a
release rotary valve with one or more passages in it, and corresponding passages in
the socket seat for the same in the piston. The effect of this arrangement is the
same as that herein before first described.
The fourth part of my said improvements consist, in a modification of the
arrangements herein before described, by substituting for the release plug cock and
rotary valves before described, a lift or slide valve, which works on a seat formed
in the piston, and having a projection from it at the under side of the piston to
close it, when the piston travels a given distance from the point where the discharge
valve is closed, or having a loop formed at the other end of such valve and acting
on a stop in the cap to close it instead of such projection: this release valve may
be opened with the opening motions herein before described, or such motions may
be varied by forming an angler projection on the face of the loose block first
described, instead of a groove in the circumference thereof, and pass over such
release valve to force it open, or a small roller may be arranged on the face of such
loose block to work over an angler projection on one end of a lever, the other end
of such lever working on a pin within the piston chamber, and the contre of such
lever acting on such release valve to force it open.
By this arrangement, the release lift valve is arranged to be forced or drawn from
its seat to open, and is closed by the piston in its travel. The effect of this
arrangement is the same as that herein before first described.
The fifth part of my said improvements consist, in a modification of the
arrangements herein before described, by substituting for the opening motions
before described, a spindle to work vertically in the cap on the piston end of the
box, the end of this spindle that is within the piston chamber acting direct on the
release lift valve fitted to work in the piston, which release valve in this case is
part hollow.
By these arrangements, the release valve is opened by pressure on the spindle that
works in the cap of the box, and when such spindle is released from pressure, the
pressure of the fluid within the piston chamber will close the release valve, or a
spring may be employed for that purpose, but in either case the discharge valve will
close by the fluid in manner herein before described. The effect of this arrangement
differs from the effects before described, for by this arrangement a constant streen
of fluid may be allowed to pass through such valve, and Piston Cocks while

page_text: pressure is kept on the opening spindle, or only a certain quantity of fluid is
allowed to pass through such cock, when the opening spindle is released from
pressure after the discharge valve is opened.
As my said improvements are capable of various modifications without departing
from the principle thereof, I do not restrict myself to material, dimensions, or the
precise form or placement of the several parts thereof, or to the packing material
to be used in connection with the pistons or spindles, or to the constructing such
cocks in all cases with by pass passages, as the fluid allowed to escape through the
release valves may be allowed to escape through an oriface in the piston end of the
box; and the discharge valve may work in the centre chamber with pressure to
close from the top of the piston.
In order that the nature of my said Improvements may be more fully understood,
I will proceed to describe the several Figures on the sheet of Drawing hereunto
annexed, all of which Figures are marked with the like letters of reference, to the
like parts throughout.
Figure 1, is a longitudinal view part in section, of a Valve and Piston Cock
constructed according to the first part of my said Improvements as herein-before
described. Figure 2, is an external view of the cap on the piston chamber,
showing in this case a forked lever attached to the spindle for giving motion
to the loose block thereon, and showing a stop pin to determin the distance
such spindle shall move in its line of motion. Figure 3, is a plan of the
underside of the loose block, Figure 4, is a plan of the top of such loose
block and Figure 5, is a longitudinal view of such loose block.
A, is the cap on the piston chamber end of the circular box: and B, is the cap on
the discharge valve chamber on the other end of the box. C, is the centre
chamber and D, the inlet pipe: E, is the discharge valve chamber: and F, the
outlet pipe: G, is the piston chamber and a, is the by pass passage formed on the
outside of the box: b is the time hole and c, the time screw: d, is the discharge
valve and e, is the piston that is connected to it by the spindle f, g, is the orifice
in the discharge valve chamber division: i, is the plug cock fitted in the
piston e, and j, is the passage through it: k, is the piston guide rod: 2, is the
spindle that works in the cap A, and to this spindle the opening lever m, is
attached and m¹ is the stop pin: n, is the loose block that works on such spindle
having the two sides of a square o, o, formed on it: p is a flat headed bolt acted on
by the spring q, to move the loose block n, from and to given positions: and r, r, is
the groove in the loose block n, in which one end of the lever 8, works: the other
end of which lever is fixed to the plug cock i, and t, is the groove in the bottom
of the loose block n, in which the driving pin u, that is fixed in the spindle l, works
in is a guide for the piston spindle f, to work in and h, is a spring to counter-
balance the friction on the piston e, to secure the preponderance of pressure on the
piston e, and close the discharge valve. Figure 6, is a longitudinal view part in
section, of the seccond part of my said Improvements, in this case the spindle 2, is
fixed to or one with the plug cock i, and the opening lever m, is free to move on
the spindle, but is kept in position thereon by the pins v, v, and on the inside face of
the lever m, there is a driving pin w, that works in the groove x, that is in the
loose block n, to move the same, and y, is the crank pin on the end of the plug
cock i, and 2, is the fork fixed to the piston e, to turn and close the plug cock i.
Figure 7, is a cross section taken at the line H, on Figure 6, showing the plan of
the loose block n, with grooves x, and t, formed therein. Fi 8 shows the form
of the fork z, attached to the piston e. Figure 9, is a longitudinal view part in
section, showing the discharge valve working in the centre chamber, with the
pressure to close such discharge valve to act on the top of the piston; A, is the guide
for the piston spindle f, to work in. Figure 10, is a plan of a Rotary valve,
constructed according to the third part of my said Improvements: the seating of
this valve as two passages through it: I, is the valve and a', is the passage or port
through it, and 61, 61, are the passages or ports in the seat on which such rotary

page_text: valve works. Figure 11, is a longitudinal view part in section, of the fourth part
of my said Improvements: c¹, is the lift valve that works in the piston e,
and d', d', are the projections on such valve, and e¹, el, forms the stops in the piston
chamber to close such lift valve: and f¹, is a small roller working on the pin g¹,
fixed in the loose block n, which roller acts on the end of the lever ', to depress it
when passing it, and thus force the release lift valve c', from its seat, the lever h¹as
its fulcrum on the pin Figure 12, is a longitudinal view part in section, of the
fifth part of my said Improvements: j', is the spindle working in the cap A, and ¹,
is the passage through the piston e, to the valve c'.

page_text: DIECITICATION,
I THOMAS SEAVILLE TRUSS of 10, Straithblaine Road St Johns Hill London in
the County of Surrey Professor of Natural Philosophy do hereby declare the nature
of my Invention for IMPROVEMENTS IN AUTOMATIC VALVE AND PISTON COCKS
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
My said Improvements consist of the construction of Automatic Valve and
Piston Cocks for regulating the transmission of fluids, and constitute water waste
preventing Valve Cocks applicable for water closets, urinals and other purposes.
The First part of my said Improvements, consist of constructing an oblong
circular box or cylinder with two partitions in it to form three chambers therein,
and to each end of this cylinder movable caps or covers are fitted, and to the
centre chamber an inlet pipe is attached through which the fluid is admited into
such chamber, and in one of the other chambers in such cylinder a discharge valve
works, and to this chamber an outlet pipe is attached for the fluid to pass out by,
and in the other chamber in the cylinder a piston is fitted to work, and from a
point in the piston chamber clear of the travel of the piston a passage is formed on
the outside of the cylinder to a point in the discharge valve chamber clear of the
discharge valve, and in the partition between the centre chamber and the piston
chamber a small hole is made which I name the time hole, and in this time hole a
screw which I name the time screw is fitted to work, to close up or give a way for
the fluid to pass through such time hole, and thereby regulate the quantity of fluid
that shall pass into the piston chamber in a given time. The discharge valve and
piston are connected together by a spindle at the required distance apart, which
spindle passes through the partition of the piston chamber and a guide plate in the
centre chamber, and in the partition between the centre chamber and the discharge
valve chamber an orifice is formed arround which and within the discharge valve
chamber a suitable valve seat is formed for the discharge valve to act on, which
discharge valve is of less area than the piston to which it is connected, and within
the piston a small plug is fitted to form a plug cock, this I name the release cock,
the plug of this cock is constructed hollow for part of its length and with one or
more passages made in it from its surface at the desired angle or angles into its
hollow centre part, and in the socket formed in the piston in which such plug
works one or more similar passages are made at the desired angle or angles, and
these passages give communication with the under side of the piston against which
the fluid under pressure acts, the passages in such release cock plug and socket are
so arranged that at a given point of the circle of rotation of the plug there shall he
a passage for the fluid from the under side of the piston through such release plug
cock to the top of the piston, that the fluid released from pressure may escape from
the under side of the piston and pass out through the passage formed on the
outside of the cylinder into the outlet pipe, and when the plug of the release cock
is again moved a similar portion of a revolution the passages in the socket of such
release cock shall be again closed, and to the piston a guide is attached that moves
on a fixed rod in the piston chamber by which the piston only moves in a given

page_text: longitudinal line (and not lateral) with its longitudinal centre. In the cover on
the piston chamber end of the cylinder a spindle is fitted to work with a given
length thereof within the piston chamber and a given length outside of the cover,
and to the end of the spindle that is outside of the cover a knob or lever is
attached to turn such spindle to give motion to the several moving parts for the
opening of the discharge valve, and on the end of this spindle that is within the
piston chamber a loose block is fitted to work, and on a part of the circumference
or outer area of this loose block for a given length thereof, two sides of a square or
triangle are formed against which a spring or other yealding force is fitted to act
on a flat headed pin that keeps the lines of such square or triangle in given
positions, in manner similar to the spring in a pocket knife that retains the blade
thereof in given positions, and in another part of the circumference of this loose
block and for the length thereof a groove is formed with a given width at the top
and converging by two undulating lines to a narrow space at the bottom, and in
this groove the end of a lever works which lever is fixed to the plug of the release
cock that works in the piston, so that at a given point in the circle of motion of
this loose block, motion is given by this lever to the plug of the release cock, and
there is also another groove formed in the loose block from the spindle on which it
works for a portion of its length to its outer diameter and for about one fourth
part of its circumference for a driving pin to work in, which pin is fixed in the
spindle to cominunicate motion to the loose block.
By these arrangements when the spindle that works in the cover on the piston
chamber end of the cylinder is turned for a given portion of the circle, the driving
pin fixed in such spindle and working in the groove formed for it in the loose
block turns such loose block until the angle of the two lines forming the two sides
of a square or triangle is past the diametrical centre line of the spindle and the
line of force from the spring, at which point the force of such spring acting on the
flat headed pin gives force on the angle that is on the loose block to complete the
distance on the circle such loose block is arranged to travel and thus turns and
opens the release cock, and when the loose block has traveled to the point that the
spring comes into action to complete the travel of the loose block, then one side of
the groove formed in the circumference or outer area of the loose block for the end
of the release cock lever to work in acts on the end of such lever to turn the plug
of the release cock, so that on the completion of the travel of the loose block by
the force of the spring, such plug is turned the required distance to give a passage
through such release cock to release the fluid from the underside of the piston and
release the piston from the pressure of such fluid; then the fluid acting on the
discharge valve forces the same open, and as during this movement the piston
moves the same distance as the discharge valve connected to it, the end of the
release cock lever is drawn a given distance down the groove in the circumference
of the loose block and in its course turns the plug of the release cock to close the
same, after which the fluid passing by the time screw through the time hole in the
partition between the piston chamber and the center chamber acts on the under-
side of the piston, (the area of which is larger than the area of the discharge
valve), so that the pressure of the fluid on the piston overcomes the pressure on
the discharge valve and thus closes the discharge valve in a given time. By these
ineans any desired quantity of fluid is regulated to pass through such Automatic
Valve and Piston Cocks for each opening motion of the discharge valve.
The Second part of my said improvements is a modification of the arrangements
herein before described, and consist of applying the release cock in the side of the
piston chamber at a point clear of the travel of the piston from the under sido
thereof, and substituting for the release cock lever motion groove in the loose block,
(before described) a fork of like form as such groove on the under side of the
piston and fixing the same to the piston, and fixing a crank with a pin in the end.
thereof on the end of the plug of the release cock that is within the piston
chamber for such fork to act on, and also applying the loose block opening motion
with spring outside of the piston chamber; or the release cock may be arranged in

page_text: the side of the piston chamber at a point clear of the travel of the piston from the
top thereof, with the release cock closing motion fork fixed on the top of the
piston, and the discharge valve arranged to work in the center chamber on a valve
seat formed therein; in this case the inlet pipe becomes tho outlet pipe, and the
outlet pipe becomes the inlet pipe, and the pressure to close the discharge valve is
on the top of the piston. In these arrangements the fork on the piston acts on
the pin of the crank that is fixed on the end of the plug of the release cock to
close the same when the discharge valve has opened the regulated distance.
The Third part of my said improvements is a modification of the arrangements
herein before described, and consist of substituting for the release cock (before
described) a release rotary valve with one or more passages through it, and
corresponding passages through the seat on which it works, so arranged that such
passages shall be open when such rotary valve shall travel about one fourth part of
a circle, and closed again by the travel of about one fourth part more of the
circle.
The Fourth part of my said improvements is a modification of the arrangements
herein before described, and consist of substituting for the release cock and release
rotary valve, (before described) a release lift or slido valve which acts on a seat formed
in the piston, and having a projection from it at the under side of the piston to close
it when the piston travels a given distance from the point where the discharge
valve is closed; or having a loop from it at the other end of such valve to act on a
stop in the cover on the piston-end of the cylinder to close such lift or slide valve
instead of the projection described. This release lift valve is opened by a variation
of the opening motion herein before first described, and this variation consists of
forming an angular projection on the face of the loose block (before described)
instead of a groove in the circumference thereof, which angular projection when
passing over the release lift valve shall force it open, or a small roller may be
arranged on the face or circumference of such loose block to work over an
angular projection on the end of a lever, the other end of such lever working on a
pin within the piston chamber for its fulcrum with the centre of such lever to act
on the release lift valve to force it open when the roller on the loose block is
passing over such lever. By these arrangements the release valve is forced from
its seat to open, and is closed again by the travel of the piston bringing the release
valve in contact with the stop for closing the same.
The Fifth part of my said improvements consist of a modification of the
arrangements herein before described, and consist of substituting for the opening
motions before described a spindle to work vertically in the cover on the piston
end of the cylinder with the end thereof that is within the piston chamber acting
direct on the release lift valve in the piston, the other end of such spindle being
continued to the outside of the cover to be acted on by pressure to open such
release lift valve. By these arrangements the release lift valve is opened by
pressure from without the cylinder on the spindle that works in the cover on the
piston end of the cylinder, which pressure forces such release valve from its seat to
open, and when such spindle is released from pressure, the pressure of the fluid
acting on the under side of the piston in the piston chamber forces such releaso
lift valve to its seat again, when the discharge valve will close in manner herein
before described. The effect of these arrangements are, that a constant streem of
fluid may be obtained, or only a given quantity for each opening motion of the
release lift valve.
Where required springs are employed to act against the pistons in the piston
chambers or cylinders to over come the friction of the working parts, and secure a
preponderance of pressure on the pistons to close the discharge valves, and springs
are also employed where required to close or assist in closing the release lift or
slide valves.
The several parts of my said improvements are held together by screws, screw
bolts, or any of the contrivances usual for such purposes, and those ends of the.
plugs of the release cocks, or of the spindles of the rotary release valves that

page_text: project outside the cylinder, may be worked by knobs, levers, or have any other
suitable contrivance attached thereto to give motion to the same.
In order that the nature of my said improvements and in what manner the samo
are to be performed may be more fully understood, I will proceed to describe the
several Figures on the Sheet of Drawing hereunto annexed, all of which Figures
are marked with the like letters of reference to the liko parts throughout.
:
Figure 1 is a longitudinal view part in section of an Automatic Valve and Piston
Cock constructed according to the First part of my said improvements as herein
before described. Figure 2 is an external view of the cover on the piston chamber,
showing in this case a forked lever attached to the spindle for giving motion to the
loose block thereon, and also showing a stop pin to determine the distance such
spindle shall move in its line of motion. Figure 3 is a detail plan of the underside
of the loose block; and Figure 4 is a detail plan of the top of such loose block and
Figure 5 is a longitudinal view of such loose block in detail. A is the cover on the
piston chamber, and B is the cover on the discharge valve chamber, C is the centre
chamber, and D the inlet pipe; E is the discharge valve chamber, and F the outlet
pipe; G is the piston chamber, and a is the passage formed on the outside of the
cylinder for the fluid released from pressure to pass through into the outlet pipe F;
bis the time hole and c the time screw; d is the discharge valve and e is the
piston that is connected to it by the spindle f; g is the orifice in the discharge
valve chamber division on which the discharge valve d acts. is the plug of the
release cock fitted into the piston e, and j is the passage through it; k is the piston
guide rod. is the spindle that works in the cover A, and to this spindle the
opening lever m is attached; and m¹ is the stop pin; n is the loose block that
works on the spindle which loose block has the two sides of a square o o formed
on it; and p is the flat headed pin acted on by the spring q to move the loose
block n from and to given positions; and is the groove in the loose block n in
which one end of the release cock lever a works, the other end of this lever being
fixed to the plug i of the release cock; and t is the groove in the loose block n in
which the driving pin u that is fixed in the spindle works in; is a guide for
the piston spindle f to work in; and is a spring to counterbalance the friction on
the piston e to secure a preponderence of pressure thereon to close the discharge
valve d.
Figure 6 is a longitudinal view part in section of one of the arrangements
according to the Second part of my said improvements, in which the spindle is
fixed to or one with the plug of the release cock i; and the opening lever m is free
to move on the spindle but is kept in position thereon by the pins vv; and on
the inside face of the lever m there is a driving pin w that works in the groove
that is in the loose block n to move the same by; and y is the crank pin on.the
end of the release cock plug i, and is the fork fixed to the piston e to turn plug i
of the release cock to close the same. Figure 7 is a cross section taken at the
dotted line H on Figure 6, showing the plan of the loose block n with grooves x
and formed therein. Figure 8 shows the form of the fork z attached to the
piston e. Figure 9 is a longitudinal view part in section of the further modification
according to the Second part of my said improvements, in which the discharge
valve dis arranged to work in the centre chamber C of the cylinder, with the
pressure to close such discharge valve to act on the top of the piston e.
Figure 10 is a plan of a rotary release valve constructed according to the
modification in the Third part of any said improvements, in which I is the rotary
valve, and a is the passage through it, and n¹ is the spindle of such valve; and
Figure 11 is a plan of the seat on which such rotary release valve works in which K
is the seat and b¹ 61 are the passages through it, and p' is the recess for the end of
the valve spinde n¹ to work in.
Figure 12 is a longitudinal view part in section of the arrangements constructed
according to the modification in the Fourth part of my said improvements, in which
c¹ is the release lift valve that works in the piston e, and d' d' are the projections
ou such release lift valve, and e¹ e¹ form the stops in the piston chamber to close

page_text: Buch release lift-valve, and f' is a small roller working on the pin g¹ fixed in 'the
loose block n, which roller acts on one end of the lever that works on the
fulcrum pin to depress it when passing over it, and thus force the release lift
valve fron its seat to release the fluid under pressure and allow the discharge
valve d to open; r² is the valve spring.
Figure 13 is a longitudinal view part in section of the arrangements constructed
according to the modification in the Fifth part of my said improvements, in
which is the spindle working in the cover A, and ¹ is the passage through the
under side of the piston e to the release lift valve c¹.
As my said Improvements are capable of various modifications without departing
from the principle thereof, I do not restrict myself to material, dimensions, or the
precise form or placement of the several parts thereof, or to the packing material
to be employed in connection with the pistons, spindles or valves; and for some
purposes the pistons may be arranged as diaphragms in such Automatic Valve and
Piston Cocks.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
1 The construction of Automatic Valve and Piston Cocks for the transmission
of fluids with discharge valve connected to a piston therein which discharge valve
opens and closes automatically by the pressure of the fluid within such cocks by
means of a release cock, rotary release valve, or release lift or slide valve working
in the piston to which the discharge valve is connected, substantially as and for
the purpose herein before set forth.
2 The application of such release plug cock and rotary release valve in the side
of the piston chamber instead of in the piston, substantially as and for the purpose
herein before set forth,
3d The grooved loose block and spring opening motion for obtaining the
opening and closing motions, or only the closing motion of such release plug cock,
rotary release valve, or release lift or slide valve, whereby the lever, knob or
handle for communicating motion thereto cannot be placed in any position to obtain
a constant streem of fluid through such Automatic Valve aud Piston Cocks,
substantially as and for the purpose herein before set forth.
Dated this 21st day of April 1885,