An Improvement of the Water Closet Flushing Cistern.
Year: 1898

page_text: Date of Application, 13th June, 1898
Complete Specification Left, 13th Mar., 1899-Accepted, 6th May, 1899
An Improvement of the Water Closet Flushing Cistern.
NORMAN LINES, 22, Inkerman Road, St. Albans, Hertfordshire, England, Engineer
and Blacksmith, do hereby declare the nature of this invention to be as follows:-
The cistern is made in two halves, and bolted together, and containing an india-
rubber bag and ball, with an air valve in top.
I, NORMAN LINES, of 22, Inkerman Road, St. Albans, in the County of Hertfordshire,
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 :-
My invention relates to an improvement of the water closet flushing cistern.
In carrying my invention into practice I construct the cistern in two halves of a
circular shape in cast iron, each half has a flange arcund the edges with bolt holes and
the said halves are bolted together. The india rubber bag and ball is placed inside
the cistern and the edges of the india rubber bag projects between each flange so
that the bolts pass through the projected edges of the india rubber bag when fixing
the two halves of the cistern together. An air valve at the top consists of four
perforated holes the top half of the cistern.
In the accompanying drawing which is a vertical section of a closed cistern having.
an india rubber bag d fixed in the cistern by constructing the cistern in two or more
metallic parts and bolting the parts together by bolts and nuts c at the flanges c¹ with
the edges of the india rubber bag d between to make a water tight joint.
The cistern is provided with an inlet hole g below the india rubber bag d, an air
hole or holes b in the top a above the india rubber bag d, and a flushing valve
at the bottom l. The valve is a solid ball i fitting a suitable seat j, it is raised
for flushing purposes by means of a spindle o fitted through a stuffing box below
the valve seat j and across the outlet hole; the spindle o is provided with a crank o¹
to which a rod n is connected by joints m, the rod n works vertically in the
outlet hole. On the end of the rod na disk is fixed to fit the ball i. A
weighted lever p is fitted to the spindle o, the weight q keeping the disk k from
touching the ball i.
Inside the cistern e a pipe f is fitted with a cup h and an inlet hole g across
the top of the outlet valve, in such a position that when the ball i is raised it

page_text: comes in contact with the cup h; at the point of contact a small hole g is made
to admit the water, so that when the ball is raised for flushing purposes it is pressed
inside the cup h against the inlet hole g and closing it.
The action of the cistern in operation is as follows:-
The water enters by the hole g below the india rubber bag d, when the cistern is
full the india rubber bag d is pressed to the shape of the upper part a of the cistern &
and closes the air holes b at the top. To empty the cistern the weighted lever pis
pulled down by a chain and ring r, the disk k is then brought into contact with the
ball lifting it from its seat j into the cup to close the opening g.
The elasticity of the india rubber bag d and the atmospheric pressure of air acting
on the india rubber bag d force the water out of the cistern e with a heavy flushing
power.
Flushing pipe is connected to the base of the cistern by a union 8.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
The water closet flushing cistern substantially as above described in this
specification and illustrated in the accompanying drawing.
Dated this 13th day of March 1899.
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.