Improvements in Water Closets and in Valves and Supply Cistern's therefor, and for other purposes.
Year: 1895

page_text: Date of Application, 6th June, 1895-Accepted, 6th July, 1895
COMPLETE SPECIFICATION.
Improvements in Water Closets and in Valves and Supply Cistern's
therefor, and for other purposes.
=
We, WILLIAM THOMSON, Engineer, and NEWTON TREVITHICK THOMSON,
Draughtsman, both of Violet Bank, Dumbreck, Glasgow, in the County of Lanark,
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 water closets, valves and cisterns and it has for its
objects mainly to make provision for more effectually excluding the admission of
sewer gas emanating from the drain pipe, and to prevent waste of the flushing
water whilst maintaining a dry cistern when such is desired.
The invention is illustrated by the accompanying drawings in which
Figure 1 is a vertical section and Figure 2 a part elevation and part section at
right angles to Figure 1, shewing the cistern used in conjunction with the water
closet.
Figure 3 is a plan of the closet,
Figure 4 an elevation of the tumbler lever which operates to discharge the
cistern and
Figures 5, 6, 7, 8 and 9 are modifications of valves and connections used in the
closet.
Referring to Figures 1 to 3, A is the closet basin in which the usual water trap
is or may be dispensed with, B a cylindrical casing in which a tube, plug or like
valve works, and through the cover of which the closet handle D is carried.
The valve C when in its lowest position rests on an india-rubber ring E in an
annular recess F formed in the casing B or the annular recess may be partially
filled with water to form a seal, the valve in either case thereby shutting off the
sewer gas rising from the drain pipe. A ventilating orifice band pipe connections
are or may be provided.
On the closet handle D a tappet rod G is secured and acts on one end of
a weighted tumbler H pivoted at I to tilt it, and a cord J connects the
To the other
tumbler H with a beam lever K pivoted within the cistern K'.
end of this lever K a slip link or chain L is attached which is secured
to a tumbler M pivoted at N on the usual ball lever O. One end of a
second slip link or chain P is secured to this tumbler M the other end of
the slip link P being attached to the ordinary outlet valve Q. The tumbler H
as shewn at Figure 4 is preferably fitted with a movable weight H¹ provided
with a central spindle or pins adapted to roll within a sloth in the tumbler
lever so that as the tumbler falls from the raised position shewn in dotted
lines to the position shewn in full lines, the leverage or pull on the cord J due to
the weight H rolling along the tumbler lever is gradually applied instead of
suddenly acting and tending to snap the cord.
The operations of measuring and discharging the water are effected as
follows:-
When the water closet handle D is pulled up the tappet rod G comes into
contact with one end of the tumbler H and tilts it, the tumbler thereupon by means
of the cord J pulls down one end of the beam lever K and the valve Q is thus
raised through the action of the slip links or wires L and P. The valve Q is
held up until the position of the tumbler H is reversed, and as the ball lever is
P1

page_text: also held up the cistern empties itself, and remains empty until on the reversal of
the tumbler H the cord J is released and the lever K is operated on to lower the
ball cock lever. The pull on the slip link or wire L first raises the tumbler M and
with it the ball cock lever O and then the tumbler acting through the slip link or
wire Praises the valve Q, the arrangement ensuring that the ball cock will be
closed and so maintained whilst the contents of the cistern are being discharged.
The slip action of the links or wires L and P permits of the ball cock lever O falling
to open the ball valve and fill the cistern upon the cord J being relieved of the
weight of the tumbler H and of the said lever O again rising with the raising of
the water level without acting on the outlet valve Q.
The cistern is thus adapted to supply a measured volume of water at each
operation, and it is applicable not only for supplying water to water closets but
for delivering a measured quantity of liquid for other purposes.
Figure 5 shews the closet handle D actuated by a lever R instead of as at
Figs. 1, 2 and 3 by direct pull.
Figures 6 and 7 shew modifications in which clack valves are used and Figs. 8
and 9 are modifications in which semi-cylindrical rotating valves or key-cocks Tare
used to close the connection between the closet basin and the drain pipe but it is
obvious that sluice or like valves may also be used.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. A water closet provided with a self sealing valve constructed and arranged to
operate substantially as described under several modifications with reference to the
annexed drawings.
2. A cistern for delivering a measured supply of water to water closets and for
other purposes, the ball cock or other inlet of which is closed and so main-
tained whilst the outlet valve is opened by means of devices constructed,
arranged and operated substantially as described with reference to the annexed
drawings.
3. In a water supply cistern the combination with the ball cock lever of a
tumbler pivoted thereon and connected to the outlet valve and to the pull rod or
lever of a closet or the like substantially as and for the purpose set forth.
4. A self sealing valve for water closets and for other purposes constructed and
arranged to operate substantially as described under different modifications with
reference to the accompanying drawings.
5. The tumbler H constructed and arranged to operate substantially as described
with reference to Figures 1 to 4 of the accompanying drawings.
Dated this 5th day of June 1895.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62 St. Vincent Street, Glasgow, Agent for the Applicants.