Improvements in and relating to Piston Valves.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Piston Valves.
1, PAUL SYLBE, of the Schmöllner Maschinenfabrik, Schmölln, Saxony-Alten-
burg, in the Empire of Germany, Manufacturer, do hereby declare the nature
of this invention to be as follows:-
-
My invention relates to piston valves.
In the piston valves constructed in conformity with my said invention the
opposite surfaces presented by the valve head or cone and which close the
passage are of the same diameter and will therefore be perfectly balanced as
soon as the pressures, produced by mechanical means or automatically by water
or gaseous bodies, are equal in the chambers separated by such valve head or cone.
Referring to the accompanying drawings,
Figure represents an arrangement having a suction valve and a delivery
valve placed one above the other.
Figure 2 is a plan of the suction valve shown in Figure 1.
Figure 3 represents a section showing a piston valve to an enlarged scale
Figure 4 shows a section of a cylindrical valve, and
Figure 5 part of a piston ring.
Figure 6 is a section showing a modification in which the head or cone of the
suction valve is carried by spiral springs.
Figure 7 is a section of the corresponding delivery valve.
Figure 8 shows a section of an arrangement similar to that in Figure 6.
Figure represents to an enlarged scale a valve head or cone furnished with
two rings.
Figure 10 represents to an enlarged scale a solid valve head or cone entering
a ring in the seat or casing, as shown-in Figure 7.
In the arrangement shown in Figure 11 provide a two-part valve casing with
a suction valve c¹ and a delivery valve c situated one above the other, the suction
valve occupying the raised position during the suction of the piston The de-
livery valve c is closed and the piston-shaped valve head or cone, furnished with
Of course the valves may also be
a ring d, forms a tight joint in the seat p.
arranged side by side or singly
Figure 3 represents a piston valve wherein the head or cone c has a system of
wings, which may be provided with rings or the like. In the head or cone I
arrange one or more somewhat elastic rings d, such ring or rings being held
in position by a ring or disc which is screwed on and affords a means for
making a tight joint. During the upward and downward movement of the
head or cone the ring d, owing to the obliquity of the seat p, is capable of
sliding easily therein without giving rise to jars.
I have represented in Figure 4 a valve of cylindrical construction. The head
or cone c constitutes a piston having a ring d, which is adapted to move up and
down in a cylinder o furnished with openings, its path being limited by pins
or lugs engaging with slots r. Pins or lugs may also serve to stop the down-
ward movement.

page_text: In a further modification, represented in Figure 6, the head or cone is sup-
ported by spiral springs and is opened or closed by the pressure produced by
the pump piston. The valve head or cone c¹ is shown in the closed position.
During the suction of the pump piston the head or cone c¹ moves downwards, as
indicated by the arrow, and opens the passage. The spring b is compressed,
whilst the spring a is expanded and assumes the shape of the spring a¹ Figure 8.
When the piston moves back and displaces the gases or liquids drawn in, the
valve head or cone shuts off the passage, and the ring d establishes a tight joint
in the seat p. The delivery valve Figure 7 will now occupy the open position,
because the pressure in the cylinder is equal to the pressure above this valve. In
this instance the springs a, Figure 6 and 6 Figure 8 act in the direction of
the arrows, and the valve heads or cones will commence to open already before
the equalization of the pressure, because the valve is balanced and the action of
the spring sets the head or cone in motion, thus relieving all the surfaces to
which the load has been due. The opening of these valves depends only on
the movement of the pump piston and will be silent and free from jars. In fact
jars and breakage cannot take place, because an increase of pressure below these
valve heads or cones, which in the arrangements heretofore used often occurs to
a high degree, is entirely obviated.
Moreover, the springs & serve to reduce the jars which are less in proportion
to the number of elastic rings.
Dated this 3rd day of August 1200.
,
J. LINCOLN & Co.,
Agents for the Applicant.
Improvements in and relating to Piston Valves.
I, PAUL SYLBE, of the Schmöllner Maschinenfabrik, Schmölln, Saxony-Alten-
burg, in the Empire of Germany, Manufacturer, 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 piston valves.
In the piston valves constructed in conformity with my said invention the
opposite surfaces presented by the valve head or cone and which close the
passage are of the same diameter and will therefore be perfectly balanced as
soon as the pressures, produced by mechanical means or automatically by water
or gaseous bodies, are equal in the chambers separated by such valve head or cone.
Referring to the drawings (filed with the Provisional Specification):
Figure 1 represents an arrangement having a suction valve and a delivery
valve placed one above the other.
Figure 2 is a plan of the suction valve shown in Figure 1.
Figure 3 represents a section showing a piston valve to an enlarged scale
Figure 4 shows a section of a cylindrical valve, and
Figure 5 part of a piston ring.
Figure 6 is a section showing a modification in which the head or cone of the
suction valve is carried by spiral springs.
Figure 7 is a section of the corresponding delivery valve.
Figure 8 shows a section of an arrangement similar to that in Figure 6.
Figure 9 represents to an enlarged scale a valve head or cone furnished with
two rings.
Figure 10 represents to an enlarged scale a solid valve head or cone entering
a ring in the seat or casing, as shown in Figure 5.

page_text: In the arrangement shown in Figure 1 I provide a two-part casing with a
suction valve and a delivery valve c situated one above the other, the suction
valve c occupying the raised position during the suction of a pump or like piston
(not shown). The delivery valve c¹ is closed, and the piston-shaped valve head or
cone is furnished with a ring or rings d to make a tight joint in the seat p. Of
course the valves may also be arranged side by side or used singly.
Figure 3 represents a piston valve wherein the valve head or cone c has wings
which may be provided with rings or the like. I hold the ring or rings din
position by discs which are screwed on and serve for making a tight joint.
During the upward and downward movement of the head or cone the ring d,
owing to the obliquity of the seat 2, is capable of sliding easily therein without
giving rise to jars.
I have represented in Figure 4 a valve of cylindrical construction, whose head
or cone e constitutes a piston having a ring d, which is adapted to move up and
down in a cylinder o furnished with openings, its path being limited by pins or
lugs engaging with slots a. Pins or lugs may also serve to stop the downward
movement.
In a further modification represented in Figure 6 the head or cone is sup-
ported by spiral springs and is opened or closed by the pressure produced by a
pump or like piston (not shown). The valve head or cone c¹ is shown in the
closed position. During the suction of the pump piston the head or cone
moves downwards, as indicated by the arrow, and opens the passage. The
spring 6 is compressed, whilst the spring a is expanded and assumes the shape
of the spring a Figure 8. When the piston moves back and displaces the gases
or liquids drawn in, the valve head or cone shuts off the passage, and the ring d
establishes a tight joint in the seat p. The delivery valve Figure 7 will now
occupy the open position, because the pressure in the cylinder is equal to the
pressure above this valve. In this instance the springs a, Figure 6 and 61 Figure S
act in the direction of the arrows, and the valve heads or cones will commence
to open already before the equalization of the pressure, because the valve is
balanced and the action of the spring sets the head or cone in motion, thus
relieving all the surfaces to which the load has been due. The opening of these
valves depends only on the movement of the pump piston and will be silent and
free from jars. In fact jars and breakage cannot take place, because an in-
crease of pressure below these valve heads or cones, which in the arrangements
heretofore used often occurs to a high degree, is entirely obviated.
Moreover, the springs a 6 serve to reduce the jars which are less in pro-
portion to the number of elastic rings.
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:-
First. Piston valves wherein elastic rings d are provided in the valve head or
cone e or in the valve seat of the casing, which rings will make a tight joint at
their periphery and completely balance the valve head or cone when the pres-
sures on the two sides thereof are equal, substantially as set forth.
Second. Piston valves wherein the movements of the valve head or cone are
imited by springs and wherein the spring a will tend to open the valve head or
cone when closed and will cease to act when the valve head or cone is open,
substantially as set forth.
Dated this 29th day of March 1900.
J. LINCOLN & Co.,
75, Chancery Lane, London, W.C.,
Agents for the Applicant.