A BALL VALVE FOR HIGH AND LOW PRESSURE WATER
Year: 1884

page_text: COMPLETE SPECIFICATION.
I HERBERT TROTT Engineer of 75 High St. Battersea in the County of
Surrey S.W. do hereby declare the nature of above Invention for A BALL VALVE
FOR HIGH AND LOW PRESSURE WATER and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
This Invention relates to forming a full water way in ball or bib valves for high
and low pressure water, Fig. I in the accompanying Drawings shewing the half
section and mechanism with ball lever attached. Also to the use of a tinned copper
cylinder perforated to resist different pressures of high pressure water. For low
pressures the cylinder is taken out, being removable. Also top of valve is secured
from leaking by a cap.
The first part of the Invention relates to the novel way of forming a full water
outlet Fig. I. D underneath inner valve, over top of bottom guide E, of valve
spindle B as per Drawings.
The second part of the Invention relates to a top screwed cap C, with hole bored
in centre, acting as guide to admit top spindle of inner valve.
The third part of the Invention relates to the shape of the valve seating, made
of the best water india rubber, which has a beaded edge round the bottom, so
when the valve is closed the seating setts down on a flat metal surface that makes
it perfectly water tight. Also the pressure of water is always on top of valve.
The fourth part of the Invention consists in forming a copper tinned cylinder A,
that is fitted over the inner valve and is secured by the top cap C, which cylinder
has a full water way round same, with a number of holes bored in it to resist
different pressures of high pressure water, and that will allow the ball valve lever
to work freely and very sensitively. Also the inner cylinder A being removable
can be taken out by unscrewing top cap C, and the ball valve can be used for low
pressure water at any time.
I also form a double cylinder, one fitted inside the other, with holes bored in
cach as before, so as to adjust them in different directions for each to cover part
of the holes in the other cylinder according to the water pressure, or I make square
or slot holes in same if preferred,
Lastly If the valve requires a new seating, by releasing the pin F of ball lever
and unscrewing top cap C, you can lift the inner valve out complete from the top
of valve. Also by unscrewing the valve spindle B underneath the seating a new

page_text: seating can be put in and the new one replaced, which is more convenient than
with other ball valves, as it does not require to be taken off like other valves to
get at the bottom inner seating. The Drawing shews at once the working
mechanism of same.
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
Firstly to the shape, and full way that is formed at bottom outlet of ball valve,
with a bottom guide for valve lever Fig. I, D E.
M
Secondly to a top screwed cap with a hole bored in centre, which acts as a
guide to admit top spindle of inner valve.
Thirdly to the shape of india rubber valve seating, with a round, bottom beaded
edge that setts on a flat metal surface.
b
Fourthly to a single or double cylinder A as described in Specification that is
fitted inside over inner valve, with number of square, round, or slot holes in same
to resist different pressures of high pressure water, so that the ball lever can work
quite freely. Also being removable the cylinder can be taken out for 'low water
pressures if required.
Lastly I make the same shaped valve, and mechanism act for a bib valve for hot
or cold water by inserting a handle in place of the ball lever shewn in Drawings
substantially as described in Specification.