Improvements in and relating to Valves or Gates for Sewers.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Valves or Gates for Sewers.
I, FREDERIC GEORGE SISON HAM, of 13, Grosvenor Road, Westminster, Engineer,
do hereby declare the nature of this invention to be as follows:--
Improvements in disc valves penstocks and other valves of this class and the
means of readily opening and closing the same.
The body of the valve is provided with a turned face on to which a plate or
disc is worked. In order that this plate or disc shall always fit tightly on the
face turned on body of valve I provide guides one on each side of the frame
and I fit wedge blocks to ensure good contact when the valve is closed.
The opening and closing of the valve is performed by means of a bell crank
lever which is attached to the disc or plate by a connecting rod.
The fulcrum of
the bell crank lever may be fixed to the frame of the valve or it may be fixed
on a plate to be built in the wall of a manhole or reservoir.
In place of the bell crank lever I may provide a wheel or segment of a wheel
to which I attach the connecting rod at a point near to the periphery. The
wheel or segment of a wheel may be operated by screw or tooth gearing in the
case of large valves.
Dated thin 10th day of Wahmury 1808
παινευνα
FREDERIC GEORGE SISON HAM, 13, Grosvenor Road, Westminster, 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:-
Improvements in the construction of disc valves, penstocks and other valves
of this class and the method of readily opening and closing same are carried
out in the following manner.
The body of the valve is provided with a turned face on which a plate or
disc is worked. In order that this plate or disc shall always fit tightly on the
face turned on body of valve I provide guides one on each side of the frame and
I fit wedge blocks to ensure good contact when the valve is closed.
The opening and closing of the valve is performed by means of a bell crank
lever which is attached to the disc or plate by a connecting rod. The fulcrum

page_text: of the bell crank lever may be fixed to the frame of the valve or it may be fixed
on a plate to be built in the wall of a manhole or reservoir.
In place of the bell crank lever I may provide a wheel or segment of a wheel
to which I attach the connecting rod at a point near to the periphery. The
wheel or segment of a wheel may be operated by screw or tooth gearing in the
case of large valves.
In the accompanying drawings Fig. 1 is an elevation showing one form of
this valve and the method of readily opening and closing same in which the bell
crank lever is shown at A, the connecting rod at B, the disc or valve door at C,
and the guides at D.
In dotted lines the same valve is shown with the door raised the bell crank
lever is now shown at A¹, the connecting rod at B', and the disc or valve door
at C, and the guides at D.
Fig. 2 is a section through the centre of the valve showing method of ensur-
ing good contact between the plate or disc and the turned face on the body of
the valve by means of guides and wedge blocks as described.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what
I claim is:
1st. The construction of penstocks and valves with operating lever substantially
as described and shown,
2nd. The construction of operating gear for penstocks and valves substantially
as described.
Doted th: 014
1
1000