Improvements in Flushing-cisterns.
Year: 1895

page_text: Date of Application, 11th May, 1895
Complete Specification Left, 11th Feb., 1856-Accepted, 14th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in Flushing-cisterns.
We, RICHARD BROWN EVERED, Bassfounder, and NICHOLAS COLEMAN,
Whitesmith, both of 27 to 35 Drury Lane, in the County of Middlesex, do hereby
declare the nature of this invention to be as follows -
--
This invention relates to that class of flushing-cisteins in which the Byphonic
action is set up by the movement of a bell enclosing a stand-pipe within the
cistern, the lower end or mouth of said bell normally dipping into a well with
which the bottom of the cistern is formed.
The object of our invention is to provide for a more effectual water clearance
between the inner circumference of the well and the mouth of the aforesaid bell so
that when the sy phonic action has been set up ample space will exist for allowing
the water in the cistern to freely pass into the mouth of the bell.
In carrying out our invention we may employ a cylinder that is adapted to fit
into the before mentioned well, the internal diameter of said cylinder being such
that the bell can slide freely up and down therem with but little lateral movement.
The lower end of this cylinder is provided with longitudinal projections or feet
which rest upon the bottom of the well when the cylinder is in place, and the
spaces between the projections or feet thus produce a series of segmental cavities
which extend circumferentially around the mouth of the bell when the latter is 10
its lower most position. Increased water ways are therefore formed at these parts, for
the passage of the water into the mouth of the bell. The upper end of the said
cylinder may likewise be provided with longitudinal projections which extend into
the tank and serve as guides for the bell.
Instead of employing a cylinder adapted to fit into the well of the cistern as
above described we may form the well itself with segmental circumferential
cavities near its bottom and with longitudinal projections at its upper part.
Dated this 10th day of May 1895.
HASELTINE, LAKE & Co,
45 Southampton Buildings, Loudon, W.C., Agents for the Applicants.
We, RICHARD BROWN EVERED, Brassfounder, and NICHOLAS COLEMAN,
Whitesmith, both of 27 to 35 Drury Lane, in the County of Middlesex, do hereby
declare the nature of this invention and in what manner the same
performed, to be particularly described and ascertained in and by the following
statement:
is to be
This invention relates to that class of flushing cisterns in which the syphonic
action is set up by the movement of an inverted bell-shaped vessel onclosing a
stand-pipe within the cistern, the lower end or mouth of the said bell-shaped
Fessel normally entering a space or well in the bottom of the cistern.
The object of our invention is to provide for a more effectual water clearance
between the inner circumference of the well and the mouth of the bell-shaped
LUN, 1

page_text: vessel, so that when the syphonic action takes place, ample space will exist for
allowing the water in the cistern to freely pass into the mouth of the bell-shaped
vessel.
In order that our said invention may be clearly understood and readily carried
into effect we will proceed to describe the same more fully with reference to the
accompanying diawing.
Figures 1 and 2 are sectional elevations shewing a flushing cistern provided
with our improvements; the bell-shaped vessel being iudicated in Figure 1 in its
raised position and in Figure 2 in its lowered position
Figure 3 is a transverse section on the line 1. 1. of Figure 2.
A is the cistern, A' the well in the bottom thereof, B the inverted bell-shaped
vessel, C the stand pipe, D the ball coch, and E a pivoted arm or level connected
at its inner end to the bell-shaped vessel and provided at its outer end with a
chain E' for enabling it to be operated.
For the purpose of our invention we provide the aforesaid woll A in the bottom
of the cistern, with a cylinder F whose internal diameter is such that the flanged
mouth of the bell-shaped vessel B can freely slide up and down therein with little
If any lateral play when the said vessel B is operated by the lever E.
The lower end of this cylinder F is provided with longitudinal projections or
feet which rest upon the bottom of the well A'. The spaces existing
between these projections or feet, form a series of segmental cavities which extend
circunferentially around the mouth of the bell-shaped vessel when the latter is i
ite lowered position (Figure 2). The annula space between the outer circumference
of the mouth of the vessel B and the inner surface of the well is thus increased at
the points where the said cavities are formed, so that when the vessel B 18 in the
position shewn in Figure 2, eulaiged water ways are produced for the passage of
the water from the cistern into the mouth of the bell-shaped vessel.
The lower surface of the mouth of the vessel B is provided with stop f
which rest on the bottom of the well A' when the said vessel 18 lowered and
thereby ensure that a space shall be left between the lower surface of the mouth
of the vessel B and the bottom of the well, for the water to use in the said
vessel.
The upper edge of the aforesaid cylinder F is formed with projections which
extend into the Cistern and, without materially affecting the free entrance of water
from the cistern to the well, serve as guides for the bell-shaped vessel as it reaches
its upperinost position. (Figure 1.)
Instead of employing a cylinder F adapted to fit into the well of the cistern as
above descubed, we may form the wall of the well itself with segmental cavities or
ecesses where the spaces are situated in Figures 1 and 2; the said projections f³
would then extend duectly from the upper marginal edge of the well. In this
case the inner surface of the well itselt would act to guide the vessel B, in the
manner of the before mentioned cylinder F
Having now particularly described and ascertained the nature of our said inven-
tion, and in what mauner the same is to be performed, we declare that what we
claim 15:
1. A flushing cistern in which cavities or water-ways are provided between the
inner surface of the well and the outer circumference of the mouth of the bell-
shaped vessel substantially as described and for the purpose specified.
2. A flushing cistern constructed substantially as described with reference to the
accompanying drawing and for the purpose specified.
Dated this 11th day of Februar 1898
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.