Improvements in and relating to Domestic and other Hot Water Boilers.
Year: 1896

page_text: Date of Application, 14th July, 1896
Complete Specification Left, 7th Apr., 1897-Accepted, 29th May, 1897
PROVISIONAL SPECIFICATION.
Improvements in and relating to Domestic and other Hot Water
Boilers.
I, ALBERT BARRACLOUGH Plumber Top Market Heckmondwike Yorkshire do
hereby declare the nature of this invention to be as follows:-
The object of this invention is, firstly to combine the strength and cheapness of the
ordinary wrought, or cast, iron boiler with the cleanliness and non-rusting qualities of
the more costly ones made of copper.
I first prepare an outer shell of iron or steel, before the ends are rivetted in I insert
a lining of sheet copper which is connected to the flow and return pipes in the usual
way through holes previously prepared in the iron or steel shell or casing.
A further improvement relates to the unions which connect the flow, and return
pipes, the tail part of each union is extended to receive a spiral spring which presses
at its lower end upon the collar of the tail pipe, the nut of the union is also
correspondingly arranged to press the spring at its upper end, thus as the nut is
screwed down the compression of the spring brings the tail pipe on to its seat,
should there be an excess of pressure in the boiler, the spring will give way and
relieve the boiler.
Dated this 13th day of Jul 1806
COMPLETE SPECIFICATION.
Improvements in and relating to Domestic and other Hot Water
Boilers.
I, ALBERT BARRACLOUGH of Eureka Lead Works, Heckmondwike, in the County
of York Hot-water Engineer, late of Top Market, Heckmondwike, aforesaid, 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 :-
The object of this invention is firstly to combine the strength and cheapness of
the ordinary wrought or cast iron boiler with the cleanliness and non-rusting
qualities of the more costly ones made of copper, also in kitchen and similar hot water
boilers or apparatus preventing the possibility of explosion in same by connecting
the said hoilers to the flow and return pipes by means of an expansive union safety
valve or joint, which allows a constant circulation of water, thereby preventing a
deposit of sediment, and choking of the water-way, at the same time should the pipes
or boiler become frozen in winter, or choked from other causes, any sudden or
undue pressure within the same will immediately expand the safety union and relieve
the boiler.

page_text: Fig. 3, is a sectional elevation of safety union expansion joint or valve, used in
connection with my improved boiler.
In constructing my improved boiler I first prepare an outer shell of iron or
steel A, and before the ends are rivetted in I insert a lining or shell B, of sheet
copper or other similar or suitable non-rusting metal, which is connected to the
flow and return pipes C, D, in the usual way, through holes previously prepared in the
iron or steel outer casing.
In connection with my improved boiler and to prevent explosions in same I employ
safety unions or pressure valves E, F, upon both the flow and return pipes, these
unions are preferably attached to the boiler by screws G and nuts H.
The tail pipe J of each union is extended to receive a spiral spring K, which rests
upon the lower end or collar of the said tail, the nut M, of the union as it is screwed
down, compresses the spiral spring K, forcing the tail pipe J on to its seat. Should
there be an excess of pressure within the boiler the spring will give way and relieve
the boiler, in some cases the spring may be in tension instead of compression or
I may employ dead weights, lever and weight or lever and spring.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Constructing domestic and other similar hot water boilers with an outer cover or
casing A of iron or steel, having an inner lining or shell B of copper or similar
non-rusting metal, for the purposes described.
2. In domestic and other hot water boilers, the use and employment of safety union,
pressure valves or joints E, F, for the purposes substantially as shown and described.
Dated this Sixth day of April 1897.
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicant.