Improvements in Apparatus for Heating, Circulating. Aerating, and Filtering the Water of Swimming Baths.
Year: 1888

page_text: Date of Application, 19th May, 1888
Complete Specification Left, 19th Feb., 1889
Complete Specification Accepted, 6th Apr., 1889
Improvements in Apparatus for Heating, Circulating. Aerating, and
Filtering the Water of Swimming Baths.
I, CHARLES HENRY ROSHER, of 5, Westminster Chambers, Victoria Street, in the
City of Westminster, Engineer, do hereby declare the nature of this invention to be
as follows:-
:-
This Invention relates to the heating, circulating, aerating, and filtering, of the
water of swimming baths; and has for its object to provide an improved apparatus
whereby all or any of these operations may be performed, as may be required.
In carrying out this invention, a circulation system is used comprising an aquapult
or other steam pump, and suction and delivery pipes drawing water from, and deliver-
ing it to, the bath tank and to this system is connected a heater in such way that it
may be brought into the circulation circuit, or cut out therefrom, according as it is, or
is not, required to heat the water. The heater is of such construction as to expose a
large area of heating surface to the water to be heated and would be heated by the
circulation of hot water from a boiler or by steam, the water of condensation being
in the latter case, either passed into the bath or used for heating the boiler feed or
returned to the boiler. Or a circulating hot water boiler may in some cases be
applied directly to the circulation circuit, the circulation through boiler being assisted
by the pump:
In the delivery pipe by which the circulation water is returned to the
bath, an air induction nozzle is fitted for aerating the water by the current induced
by the action of the water flowing through the nozzle. With the circulation system,
there may also be combined a filter through which the water from the bath may be
caused to pass before being returned by the pump through the heater or not, as may
be required to the bath tank.
With this apparatus the water may be circulated and aerated without being heated,
in order to maintain a uniform temperature and keep the water fresh day and night,
in which case, it may be drawn froin the overflow of the bath tank. Or it may be
rated, as well as circulated and aerated; or in either of the above cases, it may also
be filtered, the water being drawn either from the overflow or some lower level.
Dated this 10th day of May 1998
CHARLES H. ROSHER.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Heating, Circulating, Aerating, and
Filtering the Water of Swimming Baths.
I, CHARLES HENRY ROSHER, of 5, Westminster, Chambers, Victoria Street, in the
City of Westminster. 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:—
This Invention relates to heating, circulating, aerating, and filtering, the water of
swimming baths; and has for its object to provide an improved system of apparatus
whereby the operations of circulating, heating, and aerating, or circulating, filtering,
heating, and aerating, or circulating and aerating, or circulating, filtering, and
aerating (or the same operations without the aerating) may be performed as may be
required.
In carrying out this invention, a circulation system is used comprising an aquapult
or other steam pump and suction and delivery pipes drawing water from, and deliver-
ing it to, the bath tank and to this system is connected a heater in such way that it
may be brought into the circulation circuit or cut out therefrom according as it is,
or is not, required to heat the water. The heater is of such construction as to expose
a large area of heating surface to the water to be heated and would be heated by the
circulation of hot water from a boiler or by steam, the water of condensation being in
the latter case either passed into the bath or used for heating the boiler feed or
returned to the boiler. Or a circulating hot water boiler may in some cases be
applied directly to the circulation circuit, the circulation through the boiler being
assisted by the pump. In the delivery pipe by which the circulation water is
returned to the bath, an air induction nozzle is fitted for aerating the water by the
current induced by the action of the water flowing through the nozzle. With the
circulation system there may also be combined a filter through which the water from
the bath may be caused to pass before being returned by the pump {through the
heater, or not, as may be required, to the bath tank.
With this apparatus the water may be circulated and aerated without being heated
in order to maintain a uniform temperature and keep the water fresh day and night,
in which case it may be drawn from the overflow of the bath tank. Or it may be
heated as well as circulated and aerated or in either of the above cases it may also be
filtered, the water being drawn either from the overflow or some lower level.
Reference is to be had to the accompanying drawings forming part of this
specification, in which figure 1 represents a sectional plan of as much of a swimming
bath as is necessary to illustrate the invention. Figure 2 is a central longitudinal
section of same, and figure 3 an end elevation. Figure 4 is a section of the air
induction nozzle. The same letters of reference indicate the same parts in all the
figures.
A is the swimming bath tank, B the water heater, C. the aquapult or steam pump,
D the filter, E the aerating nozzle. F is one of the delivery inlets or spreaders

page_text: through which the water is supplied to the bath, G is a well or chamber in the end
wall in open communication with the deep end of the bath A, H is the overflow from
the bath tank, I is the scum separator at the filter inlet. a is the suction pipe
opening at the bottom of well G and provided with stop valve a¹ and leading to the
pump C. The pump communicates with the heater B through pipe b provided with
vavle b'. The heater B communicates by pipe e provided with stop valve c¹ with the pipe d
leading to the aerator. The pump is also connected by the bye-pass pipe e provided
with valve e with pipe d. The acrator communicates by pipe f with the spreaders F.
The overflow H communicates by pipe h with the scum separator or strainer I and
thence by pipe i and valve with the filter D the outlet & from which leads to the
suction pipe a and is provided with a stop valve k¹. For circulating, heating, and
aerating, valves a, b, and c¹ are open and the remainder closed and the course of the
water is that indicated by the feathered arrows. For circulating and aerating a¹ and e¹
are open and the rest closed, the course of the water being indicated by the featherless
arrows. For filtering, circulating and aerating, valves and eare open and the
remainder_closed, the course of the water being indicated by the dotted featherless
arrows. For filtering, circulating, aerating, and heating, valves al and el would be
closed, the rest open, the course of the water being shown by the dotted feathered
arrows. The heater may be of the tubular type, heated by the circulation of hot
water or steam from a circulating boiler or steam boiler, or it may be heated directly
by an internal furnace. The steam pump preferred is Burnett and Körtings Aquapult
and the filter is preferably similar to that described in the specification of Hobson
and Rosher's patent No. 1765 of 1887, but any other suitable kind of filter may be
used. The aerating nozzle is shewn in figure 4, the air being drawn in through the
open tube by the inductive action of the water and mingling therewith. Tube / has
a stop cock, by closing which the other operations are performed without the water
being aerated.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed 1 doclare that what 1
claim is:
1. In a circulation system comprising a pump with suction and delivery pipes
connected with the bath tank, a heater interposed in the delivery pipe and exposing
a large area of heating surface and through which tho water is forced to pass, as
described.
2. In a circulation system as described, the interposition of an air induction
nozzle between the circulating and heating apparatus and the bath, as described.
Dated this 19th day of February 1889.
C. H. ROSHER.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.