Year: 1884

page_text: I HERBERT TROTT Engineer of 75 High St Battersea in the County of
Surrey, S.W. seek leave to amend the specification of Letters Patent, No. 11,727
of 1884, as shown in red ink in the copy of the original specification hereunto
annexod:-
•
Page 2 line 16 after the words "I declare that" insert "I do not claim separately
"all the various parts herein before described but," line 17 after the words
"I claim is " insert " as follows:-
<5
"1. In a ball valve a moveable flap valve E hung on hinged or side pin bearings D
carrying an india rubber seating C with a round or square beaded edge that sets
on a flat metal surface the said inner valve C being retained by the bevel or
"undercut recess the whole having a top screwed cap and operating substantially
as shewn in the drawings and set forth herein.
ss
"
"2. In a ball valve the construction and arrangement of the valve C in which
"an indiarubber seating with a round or square beaded edge sets on a flat metal
"surface substantially as heroin set forth" striking out the whole from lines 18
to 29 inclusive.
My reasons for making this amendment are as follows
It is doubtful whether the claims are not in too general a form and consequently
IL
Dated this 6th day of July 1885.
To the Comptroller,
Patent Office, 25, Southampton Buildings,
Chancery Lane, London, W.C.
HERBERT TROTT.

page_text: 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 bigh
and low pressure water, Fig. I in the accompanying Drawings shewing the half
section and mechanism with ball lever attachod; also to the bevel shape of the
inner valve and cross bridges cast in. inlet of valve to resist part of the high
pressure water on the valve seating; also to a valve being hinged with a flap piece
attached to the top, that rests on a inner projection and the bottom end is formed.
into a half round shape to keep the water close. Also the flap valve is secured
from rising by the top cap and being movable under the cap when screwed down
allows the lever to press the seating equally on its flat metal surface, also the top
of valve is secured from leaking by a cap
The first part of the Invention relates to the way of forming a full water outlet B
Fig. I underneath valve as per Drawings
The second part of the Invention relates to the bevel shape of the inner valve C
shewn in Drawings Fig. I so whenever the ball lever descends the flap valve, E, will
always follow and keep against the end of lever
The third part of the Invention rolates to a movable flap valve E, with a
hinged D or side pin bearings attached to the top Also the other end is made
long and formed into a half round shape to keep the water close and the valve
being movable can be taken out at any time by unscrewing the top cap A you can
lift the inner flap valve E out complete from the top of valve, Also the inner
valve E, is movable under the cap A when screwed down that allows the lever to
press the india rubber seating equally all round on its flat metal surface when the
ball lever ascends and makes the valve perfectly water tight. Also the top cap A
prevents the inner valve from being raised
The fourth part of the Invention relates to the way of forming and fixing the
end of lever inside the ball valve that works direct against the back of valve E, as
shewn in Drawings Fig. I
The fifth part of the Invention relates to the way of forming cross bridges F,
cast in the inlet of ball valve to resist part of the direct high pressure water on
the valve seating when open For low pressure water the cross bridges are left
out Also I place any number of bridges in any position in the inlet of valve that
will resist different pressures of high pressure water.
Lastly I make the same shape valve and mechanism act for a bib valve, by
inserting a handle in place of the ball lever as shewn in drawings If the valve

page_text: requires a new seating by releasing the pin H, of ball valve lever and unscrewing
the top cap A, you can lift the inner. valve E, out complete from the top of valve.
Also by unscrewing the screw in centre of india rubber seating, a new seating can
be put in, and the new one replaced which is very convenient Also the shape and
full water way formed in the valve allows any sediment or substance in the pipes
to pass which the direct outlet clears the valve seating The Drawings 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 I do
not claim separately all the various parts hereinbefore described but what I claim
is as follows:-
1stly The-shape-and-full-water-way that is formed in ball valve
and A top-screwed cap A Fig. I, that also acts-as-a-guide-for-the-top-of-inner
valve E, that prevents the valve from-rising
3rd The bevel shape of the inner valve C, as described in Specification
4th A movable flap-valve E, with a-hinged D, or side pin bearings attached to
the top-also-the other end is made long and half round shape as described in
Specification
5th The shape of india rubber-seating with-a-round or square bended edge that
setts on-a-flat-metal-surface
6th The cross bridges F, east in the inlet of ball valve as described in Specification
7th The way of fixing the end-of-ball-lever-inside the ball valve as described in