Improvements in Closet Supply Valve Fittings.
Year: 1899

page_text: Date of Application, 9th Mar., 1899
Camalata Carnifuntion tast 011
.. 2000
1
1000
PROVISIONAL SPECIFICATION.
Improvements in Closet Supply Valve Fittings.
I, HENRY LEWIS DOULTON, of the Lambeth Sanitary Engineering Works,
Lambeth, in the County of Surrey, Potter, do hereby declare the nature of this
invention to be as follows:
-
To prevent concussion in pipes due to the sudden closing of closet supply
valves I construct an arrangement as follows:-
To the closet supply valve spindle is attached a rod communicating with &
acting upon a piston in a cylindrical chamber causing it to fall or rise accord-
ing as the valve opens or shuts. The upper & lower parts of the chamber are
connected by a port or passage & the piston has a number of perforations covered
on the upper side by a loosely fitting metal disc. When at rest the piston
assumes a raised position, oil or other suitable liquid occupying the remaining
space in the chamber. On opening the supply valve the liquid & piston are
transposed, the liquid lifting the metal disc after passing through the perfora-
tions. The upward movement of the piston when the valve is shutting off
causes the disc to close the piston perforations & the liquid is then forced through
the port. The rate of flow, being governed by a screw which can be adjusted to
suit the pressure of water, prevents the supply valve returning to its seating
too quickly & thus avoids concussion. It will be noticed, as well that the water
supplying the basin, being excluded from the chamber, cannot form a deposit
there to cause obstruction.
I, HENRY LEWIS DOULTON, of the Lambeth Sanitary Engineering Works,
Lambeth, in the County of Surrey, Potter, 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:-
To prevent concussion in pipes due to the sudden closing of closet supply
valves I construct an arrangement as follows:-
The invention is illustrated in the accompanying drawing in which
I, HENRY LEWIS DOULTON, of the Lambeth Sanitary Engineering Works,
Lambeth, in the County of Surrey, Potter, 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:-
To prevent concussion in pipes due to the sudden closing of closet supply
valves I construct an arrangement as follows:-
The invention is illustrated in the accompanying drawing in which
Figure 1 is a half sectional elevation.
Figure 2 is a cross section of Figure 1.
Figure 3 is a sectional plan through perforations F.

page_text: To the closet supply valve spindle A is attached a rod B communicating with
and acting upon a piston C in a cylindrical chamber D causing it (C) to fall or
rise according as the valve opens or shuts. The upper and lower parts of the
chamber I are connected by a port or passage E and the piston C has a number
of perforations covered on the upper side by a loosely fitting metal disc G.
When at rest the piston C assumes a raised position, oil or other suitable liquid
occupying the remaining space in the chamber. On opening the supply valve
the liquid and piston C are transposed, the liquid lifting the metal disc G after
passing through the perforations E. The upward movement of the piston C when
the valve is shutting off causes the disc G to close the perforations F and the
liquid is then forced through the port E. The rate of flow being governed by
a screw E, which can be adjusted to suit the pressure of water, prevents the
supply valve returning to its seating too quickly and thus avoids concussion.
It will be noticed as well that the water supplying the closet basin being excluded
from the chamber I cannot form a deposit there to cause obstruction.
Having now particularly described and ascertained the nature of my said
invention, and in what manner same is to be performed, I declare that what
I claim is:-
1. An improved method to prevent concussion in pipes due to the sudden
closing of closet supply valves, and
2. The arrangement of the fittings to avoid the liquid employed to obtain this
object coming in contact with the supply valve.
3. Fittings substantially as described and shewn in the drawings.