Year: 1899

page_text: Date of Application, 18th Jan., 1899
Complete Specification Left, 18th Oct., 1899-Accepted, 25th Nov., 1899
JAMES FRANKLIN WALLER, 46, Fish Street Hill, London, E.C. Engineer, do
hereby declare the nature of this invention to be as follows:
The improvement consists of a sealed tank of any shape and material fitted
with a syphon so arranged as to act as a combined overflow and a trapped air inlet.
The tank is provided with a manhole and the supply ball valve may be fixed to
this for convenience of repairs. The bottom of tank is provided with slanting
sides so that no deposits can accumulate.
The action of the tank is thus: --The water in the main supply being turned
on the water as drawn off from the tank passes through the ball valve, but should
the supply fail the remaining tank full can be drawn off and the air is drawn
through the syphon before mentioned, by passing the water seal until the draw-
ing off ceases when the water in syphon again becomes level and seals the trap.
This action is continuous and automatic and lasts as long as water is in the
tank, the tank always remaining sealed against the outside air whether the tank
is full or empty. As soon as the supply is again renewed the tank begining to
fill the reverse action takes place until the normal water level is reached.
small hole is provided in syphon near water level so that water has free access
to the trap. Should the valve leak the water rising in the tank reaches the top
of syphon and overflowing passes away by means of the trap.
Th
10LL
1900
A
JAS. F. WALLER.
JAMES FRANKLIN WALLER, 46, Fish Street Hill, London, E.C. 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 follow-
ing statement:-
The invention consists of a sealed tank of any suitable shape or form & made
of any metal or metals such as iron, steel, brass, copper & the like or any com-
bination of metals, or any material such as wood, earthenware glass & the like.
The bottom of tank may be made slanting towards the outlet or outlets, so that
no deposits can accumulate; & also may be fitted with one or more manlioles, so
as to provide easy access to the interior.
The tank is fitted with an overflow shaped like an inverted syphon & so
arranged as to act as a combined overflow & trapped air inlet. The overflow may
D077

page_text: be made of any metal or metals, such as iron, steel, brass, copper & the like or
any combination of metals, or any materials such as glass earthenware, stoneware,
wood & the like.
One or more small holes are provided in the overflow near water level, so that
the water has access to the trap. It may be so arranged that the water from
ball valve may have access to the trap. The ball valve may be mounted to the
manhole cover for facilitating repairs, or may be mounted in the ordinary way
to the tank. This trapped overflow may be mounted to the inside or the outside
of tank.
The invention consists of a scaled tank A Fig. 1, with outlet at bottom B,
and supplied by means of a ball valve C, which may be mounted to the manhole
cover D, the trapped overflow E, may be mounted to the inside or outside of the
tank with the replenishing hole F, near water level. The bottom G, may have
slanting sides towards the outlets B. Fresh air for supplying tank is brought
through a pipe H from the open air. The special overflow I is provided for base-
ments, but under ordinary conditions the air inlet H acts also as overflow.
'The action of the tank is thus:
The water in the main being turned on, the water as drawn off from tank is
replenished through the ball valve C, but should the main supply fail the remain-
ing tankfull can be drawn off & air passes through H & the syphon E, by pass-
ing the
water seal until the drawing off ceases,
when the water in
syphon E again becomes level & seals the trap. This action is con-
tinuous & automatic & lasts as long as water is in the tank and
being drawn off. The tank always remaining scaled against the external air
whether full or empty. As soon as the supply is again renewed the tank begin-
ing to fill the reverse action takes place until the normal water level is reached.
The small hole provided in syphon near water level is for the water to have free
access to the trap. Should the ball valve leak the water rising in the tank reaches
the top of syphon & overflowing passes away by means of the trap & overflow.
Fig 2. Shows section of a trap E. An auxilary air pipe J may be used when
required.
Fig. 3. Shows the front elevation of trap E.
Having now particularly described and ascertained the nature of my said
invention, & in what manner the same is to be performed, I declare that what
I claim is:
1. A tank that automatically seals itself against the outer atmosphere.
2. A tank free from pressure of the mains even if valve leaks.
Dated this 18th day of October 1899