Improvements in Fittings for Lavatories, Sinks, and other Vessels.
Year: 1899

page_text: Date of Application, 8th Feb., 1899
PROVISIONAL SPECIFICATION.
Improvements in Fittings for Lavatories, Sinks, and other Vessels.
I, HENRY LEWIS DOULTON, of the Lambeth Pottery, London, S.E., Potter, do
hereby declare the nature of this invention to be as follows:
.
This invention relates to outlets for liquids from lavatories sinks & other vessels.
The arrangement consists of a grating screwed on its outer rim to a washer
which is fastened into an aperture in the bottom of the vessel. A tube is attached
to a central hole formed in the grating & acts as a guide to an inner cylindrical
plug made hollow & of such a height as to form an overflow or made solid if no
overflow be required.
To prevent the escape of liquid the plug is provided around its lower part with
rubber or other suitable material to rest on a prepared seating on the washer
beneath the grating. The upward travel of the plug is limited by increasing its
diameter at the lower end to fit in a socket made in the guide tube. A pin is
secured to the plug & works in a slot cut in the tube. A second slot cut horizon-
tally receives the pin & holds the plug in a raised position, when so required, to
open a way for the discharge of the liquid. A grip or handle is fixed to the upper
part of the plug for convenience in raising or lowering.
As, beyond that described, no attachment of the plug to surrounding fittings
is necessary it will be seen that the whole waste valve is released for inspection
& cleaning on unscrewing the grating.
Improvements in Fittings for Lavatories, Sinks, and other Vessels.
I, HENRY LEWIS DOULTON, of the Lambeth Sanitary Engineering Works, Lam-
beth, in the County of Surrey, l'otter, do hereby declare the nature of this inven-
tion 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 outlets for liquids from lavatories, sinks & other vessels.
The arrangement consists of a grating A shewn in Fig. 1, screwed on its outer
rim to a washer B which is fastened into an aperture in the bottom of the
vessel C. A tube D is attached to a hole in the grating A & acts as a guide to
an inner cylindrical plug E made hollow & of such a height as to form an
overflow or closed in if no overflow be required. To prevent the escape of liquid
the plug E is provided around its lower part with rubber or other suitable material
to rest on a prepared seating F on the washer B. The upward travel of the plug E

page_text: is limited by increasing its diameter at.its lower end to fit in a socket made in
the guide tube D). A pin I is secured to the plug & works in a slot cut in the
tube A second slot cut horizontally receives the pin & holds the plug E in a
raised position when so required to open a way for the discharge of the liquid. A
grip or handle J is fixed to the upper part of the plug for convenience in raising
or lowering. As beyond that described no attachment of the plug to surrounding
fittings is necessary it will be seen that the whole waste valve is released for
inspection & cleaning on unscrewing the grating.
Instead of a grating as described the liquid may be allowed to discharge itself
through slots cut in the tube A¹ shewn in Fig. 2, the plug B' having its lower end
ground into the washer C¹ & where ground having slots D' cut to form a clear
passage for the liquid when the plug is raised. Or the discharge of the liquid may
be effected by syphonage, in this case either outlet valve mentioned above is
used preferably the one with rubber & over the plug A² in Fig. 3 is placed a
hollow cylinder 132 of sufficient diameter & length closed at the top & secured there
to the plug A². On raising & dropping the plug A² & cylinder 132 the liquid
which has been allowed to escape will tend to create a vacuum in the plug A² &
will in consequence draw the remaining liquid through the slots C² setting up
a syphonic action. A small valve may be fixed in the handle to admit air should
it be desired to retain a quantity of the liquid. Fig. 4 shews such a valve which
is opened by depressing the spindle A³ & is at other times kept closed by the
spring B. The waste valve is preferably arranged at a convenient distance below
the bottom of the vessel that the vessel may be drained clear.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I claim
is
(1) The combination of a hollow or solid waste plug working in a tubular guide
without other attachment. The guide screwed or otherwise secured to a washer
substantially as described.
(2) The combination of waste outlet with syphonic arrangement for discharge
of liquids with or without an air valve substantially as described.
(3) Fittings substantially as described & shewn in the drawings.