Improvements in and relating to Wheel, Back Pressure, and other Valve Cocks.
Year: 1896

page_text: Date of Application, 20th Mar., 1896
matate Sancification Loft 13th May 1806 Accented 13th June 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Wheel, Back Pressure, and other
Valve Cocks.
I, TIMOTHY SABINE, of Brook House, Swadlincote in the County of Derby,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide or effect certain improvements in wheel,
back pressure and other valve cocks the parts of which may be easily and
inexpensively replaced, make a perfectly tight joint; and, in the case of back
pressure valves as used for cleaning out boilers they are an absolute safety to the
persons engaged in cleaning out the boiler, as will be hereinafter explained.
In carrying out my invention I forn an outside casing for the valve to receive
an inner perforated cage the bottom of which rests upon an internal flange or
bearing in the outer casing, rubber or other suitable packing being used as desired;
a space is left all round between the cage and the outer casing and the top of the
cage is formed with a projecting flange closing in the said space, a rubber or
other resilient ball is introduced in the perforated cage and a suitable cover is
screwed on over the valve casing, a seating being provided at the bottom of the
cage for the rubber ball to bear against; when the valve is required to be closed
the wheel is screwed down and a cup or the like on the end of the valve spindle
presses the ball down on its seating and closes the valve, the opposite procedure
being adopted when opening the valve. It will thus be seen that the principal
wearing part being the rubber ball it may be cheaply renewed at any time and
being of a resilient nature may be closed with absolute tightness, the cage also
being an inexpensive part may be easily renewed.
In the case of large valves where the weight of a large rubber ball would
detract from the full pressure of steam I may form the inner cage with a portion
to hang considerably below the seating and have a cup on a stem the said cup
or bearing being slightly below the seating, so that when the pressure is taken
off the ball it will rise off the cup and thus the weight of the ball will be
counterbalanced.
My invention will also be of invaluable service as a back pressure valve for
use in cases of boiler cleaning, as it will allow the steam to pass out but the
more back pressure is put on it the tighter it will become and prevent the
persons in the boiler being scalded, the valve casing in such a case being provided
with a cover or cap that cannot be readily tampered with.
My invention is also applicable to pump clacks and different forms of valves
as will be readily understood.
ليمي
JM 1906
W. SWINDELL,
Imperial Chambers, Albert Street, Derby, Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Wheel, Back Pressure, and other
Valve Cocks.
I, TIMOTHY SABINE of Brook House, Swadlincote in the County of Derby,
Engineer, 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 :-
The object of my invention is to provide or effect certain improvements in wheel,
back pressure and other valve cocks the parts of which may be easily and
inexpensively replaced, are inexpensive, and make a perfectly tight joint; and, in
the case of back pressure valves as used for cleaning out boilers they are an absolute
safety to the persons engaged in cleaning out the boiler, as will be hereinafter
explained.
Figure 1 is a vertical section shewing the applications of my invention to a wheel
valve, and bib cock.
Figure 2 is a vertical section shewing the application of my invention to a pump
valve and back pressure valve.
Figure 3 is also a vertical section, shewing another application of my invention
as will be hereinafter explained.
In carrying out my invention I form an outside casing A arranged to receive an
inner perforated cage B the bottom of which rests upon an internal flange or
bearing C in the outer casing, rubber or other suitable packing D being used as
desired; a space E is left all round between the cage and the outer casing and the
top of the cage is made with a projecting Alange F closing in the said space, a
rubber or other resilient ball G is introduced in the perforated cage and a suitable
cover H is screwed on over the valve casing, a seating being provided at the
bottom of the cage for the rubber ball to bear against; when the valve illustrated
on Figure 1 is required to be closed the wheel I is screwed down and a cup or the
like Jon the end of the valve spindle K presses the ball down on its seating and
closes the valve, the opposite procedure being adopted when opening the valve;
the valve is shewn closed on Figure 1. It will be seen that the cage being an
inexpensive part may be easily renewed; there is also no danger of the rubber ball
getting jammed or lost in the pipes as is the case when a rubber ball is used
without a cage.
In the case of large valves where the weight of a large rubber ball would
detract from the full pressure of steam I may form the inner cage with a portion L,
see Figure 3, to hang considerably below the seating and have a cup M on a
stem N the said cup or bearing being slightly below the seating, so that when the
pressure is taken off the ball it will rise off the seating and its weight will be partly
taken by the cup M.
My invention will also be of invaluable service as a back pressure valve for use
in cases of boiler cleaning, as will be seen upon referring to Figure 2; it will allow
the steam to pass out in the direction of the arrow O but the more return or back
pressure is put on it. the tighter it will be closed, and thus prevent the persons in
the boiler being scalded, the valve casing in such a case being provided with any
suitable cover or cap that cannot be readily tampered with.
My invention is also applicable to pump valves as will be seen upon reference to
Figure 2 which shows as before an outer casing A, inner perforated cage B with
space E between the two, rubber or other resilient ball G, inlet P and outlet Q
and cover or cap H. The action of such a valve will be apparent from the
drawings and foregoing description.
The application of my invention to a bib cock is shewn hy dotted lines R and S
on Figure 1 and will also be apparent without further description.

page_text: The inner cage B may be formed in one or more parts as desired, for instance
the lower part B' might be screwed at the outer casing A and the upper part B
simply dropped on to the lower. Again the rim or flange F need not necessarily
pass all round the outside of the cage, simple projections being substituted for it if
desired. The orifices or perforations also in the cage need not necessarily be of a
circular cross section although perhaps that form may be found most desirable, they
may be of a slotted or other desired form.
The provision of the inner cage will be found to provide admirable means for
replacing the ball when unduly worn.
Although the invention is herein described and illustrated in reference to
vertical valves it will be evident that it is equally applicable for valves in
horizontal or other positions.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
The improvements in wheel, back pressure, pump and other valves or cocks
consisting of inserting a perforated cage or its equivalent in one or more parts in
an outer casing, said cage being adapted to receive a ball of rubber or other
resilient substance or composition arranged to engage a seating in said cage, a
space between the cage and outer casing being provided substantially as and
for the purposes described and illustrated.
ليمي
1900
W. SWINDELL,
Imperial Chambers, Albert Street, Derby, Agent for the Applicant.