Year: 1888

page_text: Date of Application; 4th May, 1888
Specification Accepted, 8th June, 1888
We, JOHN FREDERICK WRIGHT and GEORGE ERNEST WRIGHT, of the firm of
John Wright & Co., of Essex Works, Thimble Mill Lane, Aston, Warwickshire, Gas
Engineers, 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 has reference to those baths in which the water is heated by a gas
burner or gas burners placed beneath such bath and the said invention consists of the
combination of means herein described whereby the water is heated on its way to the
bath by the same burner or burners by which the water in the bath is heated thereby
utilizing the greatest percentage of the heat of the gas burner or burners.
According to our invention we provide a coiled tube underneath the bath (or several
coils may be employed) through which coil or coils the water flows on its way to the
bath and the said coil or coils are so situated that the water flowing therethrough will
be heated by the same gas burner or gas burners which heats or heat the bottom of
the bath.
The accompanying drawing illustrates how our invention may be carried into
practice Fig. 1 representing in part longitudinal sectional elevation a bath with our
invention applied and Fig. 2 is an inverted plan of the same.
The same letters of reference indicate the same parts in both Figures.
A is the bath underneath which is the atmospheric gas burner B, and C is a coiled
tube preferably of copper and of small diameter between the gas burner and the under-
side of the bath and having an inlet pipe c¹ connected by a pipe d or otherwise to the
water supply tap e, and an outlet pipe leading to the foot of the bath where it enters
the same by preference a short distance above the usual water level. Below the bath A
is provided the hot air chamber F which encloses the coil except on the underside
and extends over the bottom of the bath and has an outlet flue f which is led away to
any convenient chimney so as to take off the gas fumes.
When the gas burner B is lighted and the water tape turned on the water in passing
along the inlet tube c¹, coil C and outlet tube becomes heated and flows into the bath
quite hot, and the superfluous heat from the burner, by heating the chamber F is
utilized in maintaining and increasing the heat of the water in the bath. In order to

page_text: prevent as far as possible the coil C being burnt by the water tape being turned off
before the gas flame is extinguished we prefer to provide a small tube g connecting the
coil with the bottom of the bath so as to ensure the coil being filled with water when
there is any in the bath.
The arrangement of our invention above described is what we have found to answer
well in practice for the kind of bath illustrated but it will be evident that the size and
shape of the heating coil and the number of coils employed can be varied without
departing from the nature of our invention.
We wish it to be understood that we are aware that previous to our invention a gas
burner or gas burners has or have been employed underneath a bath for heating the
water therein and also that a coiled pipe is commonly used for heating water for baths
and for other purposes and we therefore do not make any exclusive claim to the use of
these parts for these purposes, but
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1st. The combination, with a gas-heated bath, of a coil or coils of tube through
which the water flows to the bath the said coil or coils being placed underneath the
bath and in such a position or positions as to be heated by the gas flame or flames by
which the bottom of the bath is heated, substantially as set forth.
2nd. The combination, with a gas-heated bath, of a coil or coils of tubo through
which the water flows to the bath the said coil or coils being placed in a heated
chamber underneath the bath and in such a position or positions as to be heated by
the gas flame or flames by which the bottom of the bath is heated substantially as set
.forth.
3rd. The combination and arrangement of parts for heating a bath by gas as herein-
before described and illustrated by the accompanying drawing.
Dated th: 2-1 1
1000
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.