IMPROVEMENTS IN OR APPLICABLE TO HOT WATER APPARATUS FOR THE PURPOSE OF PREVENTING EXPLOSION
Year: 1879

page_text: LETTERS PATENT to Thomas Haresnape, of Preston, in the County of Lancaster,
Plumber, for the Invention of "IMPROVEMENTS IN OR APPLICABLE TO HOT
WATER APPARATUS FOR THE PURPOSE OF PREVENTING EXPLOSION."
Sealed the 17th October 1879, and dated the 25th April 1879.
PROVISIONAL SPECIFICATION left by the said Thomas Haresnape at the
Office of the Commissioners of Patents on the 25th April 1879.
THOMAS HARESNAPE, of Preston, in the County of Lancaster, Plumber. "IM-
PROVEMENTS IN OR APPLICABLE TO HOT WATER APPARATUS FOR THE PURPOSE
OF PREVENTING EXPLOSION."
My Invention has for its object the prevention of explosions in hot water
apparatus, and consists in the employment of means for ensuring the maintenance
of the necessary supply of water to the boiler, in the event of the direct supply
from the cold water cistern being cut off in consequence of frost or from other cause,
and also for ensuring the escape of any excess of steam.
In carrying out my Invention, I employ in addition to the cold water supply
cistern a cylinder or vessel for containing hot water connected by suitable pipes
with the boiler, whereby the water is maintained in a heated condition, other pipes
being connected with the cylinder for supplying hot water to lavatories, baths, and
other places as required. At or near the top of this cylinder I attach a branch
pipe provided with a stop cock, and connected by means of a flexible or other tube
to a tap situated in any convenient part of the building where it is not liable to be
affected by frost, so that in the event of the supply of water to the boiler from the
ordinary cistern being cut off from any cause, the supply of water to the cylinder
and thence to the boiler, may be maintained by turning on the stop cock herein-
before referred to. The cylinder is provided with a suitable gauge for indicating
the height of the water therein, and also with a vent pipe for the escape of any
excess of steam in the case of the pipes for supplying the lavatories and baths
becoming frozen, and which vent pipe may be utilized if desired for supplying the
cylinder with water by hand. By this arrangement of apparatus, the kitchen fire
may be kept up at all times without fear of explosion, although the ordinary
supply of water may be cut off, as the boiler will be continually charged with water
from the cylinder as hereinbefore described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Haresnape in the Great Seal Patent Office on the 21st
October 1879.
« IM-
THOMAS HARESNAPE, of Preston, in the County of Lancaster, Plumber.
PROVEMENTS IN OR APPLICABLE TO HOT WATER APPARATUS FOR THE PURPOSE
OF PREVENTING EXPLOSION."
My said Invention relates to improvements-in or applicable to hot water
apparatus, whereby the maintenance of the necessary supply of water to the boiler
is ensured by means independent of the ordinary cold water cistern, the supply
from which is liable to be cut off in consequence of frost or from other causes, the
main object of my Invention being to obviate all risks of explosions which frequently
occur as a result of a deficiency in the water supply.
The annexed Drawing represents in front elevation a hot water apparatus con-
structed according to my said Invention.
A is the boiler which is normally supplied with water by a pipe a leading from
the cold water cistern.B in the ordinary manner. In order to secure the objects of
my said Invention, I employ in addition to the above mentioned ordinary means of
supply, a cylinder or vessel C.placed in communication with the boiler by means of
the pipes b, c, so that during the normal working of the apparatus the said cylinder
will be supplied with water through the boiler, which water will, when the fire is
alight, become heated by reason of its being in communication with the water
contained in the boiler. There will thus be provided a reservoir of hot water in
the cylinder C; from which the supply to the boiler will be maintained in the event
of the communication or supply from the cold water cistern being intercepted in
consequence of frost, or from any other cause, whilst the supply to the hot water
cylinder C may be maintained through a cock d, which may be connected by means
of a flexible or other tube to a tap situate in any convenient part of the building
where it is not liable to be affected by frost. The cock d may also be utilized for
drawing off water if required in case of need.
The water in the hot water cylinder is available for the supply of baths, lavatories,
and the like, through the pipes c.
The hot water cylinder C is provided with a water gauge f, for indicating the
for the escape of any
water level in the cylinder, and with a self acting valve
excess of steam in the event of the pipes e leading to the baths and lavatories
being frozen.
This valve consists of a ball which, during the normal working of the apparatus,
is maintained closed in the elevated position indicated in the Drawing.
If however the pipes become frozen up, the ball falls with the descent of the
water level, leaving room for the steam to escape, and also for water to pass into the
cylinder through the funnel at g, the latter being utilized for introducing water
by hand if required. An overflow pipe g¹ is further provided which is available in
the case of the ball not acting.
It is obvious that by the use of my said Invention, all pipes and taps appertaining
to baths, lavatories, and the like, may be repaired without interfering with the
range or inconvenience in the kitchen.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into
effect, I would observe in conclusion that what I consider to be novel and original,
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is,-
The employment in hot water apparatus of a water supply cylinder or vessel
independent of the ordinary means of supply, the said cylinder or vessel being in

page_text: communication with the boiler, and fitted with accessories so as to operate
substantially in the manner and for the purposes hereinbefore described.
In witness whereof, I, the said Thomas Haresnape, have to this my Specifi
cation set my hand and seal, this Eighteenth day of October, One thousand
eight hundred and seventy nine.
THOMAS HARESNAPE. (LS.)
Witness to the signature of
Thomas Haresnape,
SAMUEL PEARSON,
Clerk with Messrs. Bray & Gilbertson,
Solicitors,
Preston.