Year: 1887

page_text: Date of Application, 2nd Mar., 1887
Complete Left, 1st Dec., 1887
Complete Accepted, 6th Jan., 1888
I, HENRY LLEWELLIN WETHERED, of Castle Green, in the city and county of Bristol,
engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to that kind of regulator for water-closets in which the
supply of water to the basin is automatically cut off thereat through the medium of a
lever the descent of which is controlled by the escape of air from a cylindrical
chamber in which is contained a piston the rod of which is hollow and is attached to
the said lever.
It consists, firstly, in the introduction of a valve situated towards the lower end of
the cylindrical chamber of the regulator and free to open inwards. This valve governs
an orifice in the lower end of the cylinder.
This invention consists, secondly, in contracting the channel in the hollow piston
rod through which the air is expelled as the lever to which the rod is connected
descends. This channel extends throughout the piston rod and through the piston.
The escape of air through the channel is governed by a cock or tap-or equivalent
device-situated at the upper end of the piston rod.
When the lever to which the regulator is connected is drawn up in the act of
emptying the closet basin the piston of the regulator rises in the cylinder and a partial
vacuum is created in the cylinder. The valve at the lower end rises in its seat and
air is admitted to the underside of the piston. After the valve of the closet has been
closed the lever connected to the regulator descends at a rate controlled by the escape
of air from the regulator through the channel in the piston rod. The rate of escape of
the air is regulated, as aforesaid, by the cock or equivalent device at the upper end of
the piston rod and the cut off of the water supply to the basin is in turn controlled by
the descent of the lever connected to the regulator.
By the use of a valve at the lower end of the cylinder of the regulator the regulator

page_text: s readily supplied with air, and by contracting the channel in the piston rod by which
the air escapes the column of air under compression by the piston as the lever falls is
reduced and the lever descending more uniformly the cut off is steadier.
The orifice by which the air enters at the lower end of the channel in the piston rod
being of smaller diameter than the channel, the escape of air is thereby further
controlled.

page_text: I, HENRY LLEWELLIN WETHERED, of Castle Green, in the city and county of Bristol,
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:
This invention relates to regulators for water-closets in which the supply of water
is automatically cut off through the medium of a lever which, in descending after
having been raised, gradually cuts of the water supply. The descent of the lever is
controlled by the rate of escape of air from a cylindrical chamber containing a piston
the rod of which is hollow and is connected to the lever aforesaid.
According to this invention there is situated at the lower end of the air chamber of
the regulator a valve designed to open inwards. When the lever to which the
regulator is connected is drawn up in the act of emptying the closet basin, the piston
of the regulator rises in the cylinder and a partial vacuum is created below the piston.
The valve at the lower end of the chamber rises in its seat and admits air to the
under side of the piston.
After the valve of the closet has been closed, the lever to which the regulator is
connected begins to descend, and its descent is controlled by the rate at which the air
below it is permitted to escape upwards through an orifice in the piston, thence
through the hollow piston rod and finally out through a regulating tap or cock.
By the substitution of a hollow piston rod for the cylinder hitherto adopted for the
escaping air the lever descends more evenly, and increased steadiness in the cut-off is
obtained.
Referring to the accompanying sheet of drawings, Fig. 1 represents a part vertical
section of my improved regulator.
Situated towards the lower end of the cylindrical chamber a is a valvo 6 designed to
open inwards. Fig. 2 represents a plan of the valve seat. When the lever e to which
the hollow piston rod is at the upper end connected, is drawn up in the act of
emptying the closet basin, the piston e of the regulator rises in the chamber a.
A partial vacuum being thus created below the piston e, the valve b rises and
admits air to the chainber u.
After the valve of the closet has been closed, the lever c and piston e begin to
descend, and the rate of descent is controlled by the rate at which the air below the
piston is expelled through the orifice gin the piston, thence through the channel / in
the piston rod d and finally out through the governing cock or tap i.
Under a modification, the valve by which the air is admitted to the underside of the
piston is situated in the latter instead of in the bottom of the cylinder and is designed
to open downwards. The air is admitted above the piston between the piston
rod and the gland k. As the piston rises, the valve therein opens and the air passes
through to the underside of the piston. As the latter returns, the valve closes and the

page_text: air escapes through the central orifice y and finally through the governing tap or
cock, as herein before described.
Having now particularly described and ascertained the nature of this invention, and
in what manner the same is to be performed, I declare that what I claim is :-
1 In a regulator for controlling the cut-off of water to a closet basin, the use of
a valve such as b situated either towards the bottom of a cylindrical air chamber such
as a and in that case opening inwards as the piston of the regulator rises, or in the
piston itself and in that case opening downwards as the piston rises, to admit air to
the air chamber, substantially as herein before described.
2 In a regulator for controlling the cut-off of water to a closet basin the use, for
controlling the rate of escape of air in the air chamber, of a hollow piston rod such
as d connected at one end to the piston of the regulator and at the other end to the
lever through the medium of which the cut-off is effected, the channel in the piston
rod communicating at one end by an orifice of reduced diameter such as g in the
piston with the underside thereof and being at the other end governed by a cock or
tap such as i, or by the equivalent thereof, substantially as hereinbefore described.
3 The combination of parts constituting the improved regulator for controlling the
cut-off of water to the basin of a water-closet, constructed, arranged and operating
substantially as hereinbefore described.
Dated enty
00T
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.