Year: 1888

page_text: Date of Application, 25th Apr., 1888
Complete Specification Left, 5th Jan., 1889
Complete Specification Accepted, 12th Feb., 1889
I, ARTHUR DELTON, of Usine de la Madeleine near Saint Nicolas du Port (Meurthe
et Moselle) France Foreman of Works do hereby declare the nature of this invention
to be as follows:-
In stop cocks as heretofore constructed the conical plug is liable to jam itself in
the shell, if not frequently turned and furthermore the plug and shell will often cut
into each other after which the cock is no longer tight.
•
These disadvantages. do not exist in a cock according to this invention the
nature of which will be explained with reference to the annexed sheets of illus
trative drawings of which Figure 1 (Sheet 1) is a vertical section through the axis
of the improved cock..
Figure 2 is an elevation.
Figure 3 is a plan on the line A. B. of Figure 1.
Figures 4 and 5 shew in vertical section the two extreme positions of a cock
according to this invention acting by longitudinal displacement.
In these Figures similar letters refer to similar parts.
A is a fixed ordinary shell with conical bore in which is forced a movable shell or
bush B.
The shell B is turned conical on its outside to correspond with the cone of the fixed
shell and is cylindrically bored internally.
It is provided along its entire length with one or more longitudinal cuts or
divisions D. A projection or other guide E prevents. the.shell B from turning,
whilst allowing it to move longitudinally. Within this shell there works a cylindrical
plug C.
It will be understood, that if the movable shell be forced deeper into the conical
seat it will be reduced in diameter since the edges of the division D will come
nearer together.
The moveable shell will then close upon the inner cylindrical plug C and will make
a perfectly tight joint around it.

page_text: In case the shell should embrace the plug too tightly it can be eased back
a little.
This invention may be applied to all known arrangements of plug cocks such as
the ordinary conical cocks, direct or inverted, and cocks with stuffing boxes, springs
and the like.
This invention is also applicable. to those cocks in which the plug, in place of
rotating moves longitudinally in the direction of its axis as illustrated in Figures 4
and 5.
This invention is also applicable to sluice valves and one method of application is
described with reference to Figures 1, 2, 3, 4 and 5 Sheets 3 and 4 of the drawings
in which Figure 1 is an axial longitudinal section of an open sluice valve provided
. with a single moveable seat.
Figure 2 is an axial longitudinal section of a sluice valve, closed, and provided with
a double moveable seat.
Figure 3 is an axial cross section of the preceding..
Figure 4 is a horizontal section in the centre line of Figure 2.
Figure 5 is a plan on the line C. D. of Figure 2. The operation of this valve
resembles that of the cock above described.
The valve is composed of a moveable disc a through which passes the screw g.
The two plane faces of this disc are, parallel, and are provided with two projections
or joggles t. t.
The valve casing is provided with a double moveable sent d whose two internal faces
are parallel, and whose two exterior faces (Figure 2) are inclined, these seats are
retained by studs or screws 17 which allow of their moving vertically. The moveable
seat is connected to a fixed seat c.
On operating the screw g for the purpose of causing the disc a to descend and close
the valve way, this disc presses by means of the two projections tt upon the moveable
seats which slide.along the fixed seats c. c.
By reason of the inclination of the fixed seats these moveable scats are forced
toward each other and bear upon the part a.
There is thus produced a very energetic and efficacious tightening action which
provides an absolutely tight joint.
As hereinbefore explained, no jamming or seizing can take place.
Instead of two moveable seats, one only may be employed as shown in Figure 1 but
the method of action is the same.
It is an advantage to employ for the moveable seats, materials having a very low
coefficient of friction, as opposed to the usual practice according to which ordinary
cocks are made of materials of high resistance but wanting in anti-frictional
qualities.
As the moveable seat alone requires to be of material of good quality the fixed seat
or shell may be made of inferior or low-priced material, such as cast iron..
Dated this 25th day of April-1888
ARTHUR DELTON,
Per L. W..

page_text: I, ARTHUR DELTON, of Usine de la Madeleine, near Saint Nicolas du Port, (Meurthe
et Moselle), France, Foreman of Works, 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:
In stopcocks as heretofore constructed the conical plug is liable to jam itself in the
shell if not frequently turned and furthermore the plug and shell will often cut into
each other after which the cock is no longer tight.
These disadvantages do not exist in a cock according to this invention.
Referring to the drawings filed with my provisional specification
Fig. 1 is a vertical section through the axis of a cock according to my invention.
Fig. 2 is an elevation.
Fig. 3 is a plan on the line A B of Fig. 1.
Figs. 4 and 5 shew in vertical section the two extreme positions of a cock according
to this invention acting by longitudinal displacement.
In these figures similar letters refer to like parts.
A is a fixed ordinary shell with conical bore in which is forced a movable shell or
bush B.
The shell B is turned conical on its outside to correspond with the cone of the fixed
shell and is cylindrically bored internally.
It is provided along its entire length with one or more longitudinal cuts or
divisions D.
A projection E or other guide prevents the shell B from turning whilst allowing it
to nove longitudinally. Within this shell there works a cylindrical plug C. It will
be understood that if the movable shell be forced deeper into the conical seat it will be
reduced in diameter, since the edges of the division I will come nearer together.
The movable shell will then close upon the inner cylindrical plug C and will make a
perfectly tight joint around it. In case the shell should embrace the plug too tightly
it can be eased back a little. No gripping action can take place as the parts which
turn one upon another (the plug and the inner surface of the movable shell) are
perfectly cylindrical and all repairs that will be necessary will simply. consist in
replacing the movable shell whilst the fixed shell and the plug will last for a long
period without its being necessary to replace them. This invention may be applied to
all known arrangements of plug cocks such as the ordinary conical cocks, direct or
inverted, and cocks with stuffing boxes springs and the like.
This invention is also applicable to cocks in which the plug in place of rotating
moves longitudinally in the direction of its axis, as illustrated in Figs. 4 and 5. The
invention is also applicable to sluice valves and one method of application is described
with reference to Figs. 1, 2, 3, 4 and 5, Sheets 3 and 4 of the drawings, in which
Fig. 1 is an axial longitudinal section of an open sluice valve provided with a single
movable seat. Fig. 2 is an axial longitudinal section of a sluice valve closed and
provided with a double movable seat..

page_text: Fig. 3 is an axial cross section of the preceding.
Fig. 4 is a horizontal section on the centre line of Fig. 2.
Fig. 5 is a plan on the line CD of Fig. 2.
The operation of this valve resenibles that of the cock above described.
The valve is composed of a movable disc a through which passes the screw g. The
two plane faces of this disc are, by preference, renewable, and are exactly parallel, and
are provided with two projections or joggles it. The valve casing is provided with a
double movable seat d whose two internal faces are parallel' and whose two exterior
faces (Fig. 2) are inclined; these seats are retained by studs or screws 11 which allow
of their moving vertically. The movable seat is connected to a fixed seat c. ·
On operating the screw y for the purpose of causing the disc a to descend and close
the valve-way, this disc presses by means of the two projections t t upon the movable
seats which slide along the fixed seats c.c. By reason of the inclination of the fixed
seats these movable seats are forced toward each other and bear upon the part a.
There is thus produced a very energetic. and efficacious tightening action which
provides an absolutely tight joint. As hereinbefore explained no jamming or seizing
can take place. Instead of two movable seats one only may be employed as shewn in
Fig. 1 but the method of action is the same.
It is an advantage to employ for the movable seats materials having a very low
coefficient of friction as opposed to. the usual practice according to which ordinary
cocks are made of materials of high resistance but wanting in anti-frictional qualities.
As the movable seat alone requires to be of material of good quality the fixed seat
or shell may be made of inferior or low priced material such as cast iron.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A stop cock having a cylindrical plug working in a movable seat contained
within a fixed tapered shell the said movable seat being capable of longitudinal
movement within the fixed shell to enable its internal diameter to be adjusted to suit
the plug substantially as described and shewn.
2. The improved sluice valve with movable seats substantially as described with
reference to Figs. 1 to 5 of sheets 3 and 4 of the annexed drawings.
Lated this 5th day of January 1889.
Lated this 5th day of January 1889.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.