IMPROVEMENTS IN WATER GAUGES FOR STEAM-BOILERS."
Year: 1880

page_text: LETTERS PATENT to John Blake, of Accrington, in the County of Lancaster,
Engineer, for an Invention of "IMPROVEMENTS IN WATER GAUGES FOR
STEAM-BOILERS."
PROVISIONAL SPECIFICATION left by the said John Blake at the Office
of the Commissioners of Patents on the 9th January 1880.
JOHN BLAKE, of Accrington, in the County of Lancaster, Engineer.
MENTS IN WATER GAUGES FOR STEAM BOILERS."
"IMPROVE-
My Invention consists in placing at or near the upper end of the water gauge
and connected with it a tube or chamber supplied with steam from the boiler, in
such a manner that the said tube or chamber shall by condensing the steam supply
pure water to the water gauge, and drive the dirty water downwards into the
boiler, thus keeping the gauge clear and preventing any accumulation of dirt or
scum in the gauge, and keeping the glass tube supplied with clear water. In the
lower part of the water gauge I form an enlarged chamber to receive any dirt or
sediment which may accumulate to be blown off when required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Blake in the Great Seal Patent Office on the 8th July
1880
JOHN BLAKE, of Accrington, in the County of Lancaster, Engineer.
MENTS IN WATER GAUGES FOR STEAM BOILERS."
"IMPROVE-
My Invention consists in placing at or near the upper end of the water gauge
and connected with it a tube or chamber supplied with steam from the boiler, in
such a manner that the said tube or chamber shall by condensing the steam supply
pure water to the water gauge, and drive the dirty water downwards into the
boiler, thus keeping the gauge clear and preventing any accumulation of dirt or
scum in the gauge, and keeping the glass tube supplied with clear water.
In the lower part of the water gauge I form an enlarged chamber to receive any
dirt or sediment which may accumulate to be blown out when required.
And in order that my Invention may be fully understood and readily carried
into effect, I will describe the accompanying Drawing, reference being had to the
letters marked thereon.
a is a steam chamber supplied with steam from the boiler connected to the top
of the water gauge b, and at the lower end of the gauge is an enlarged chamber c,
as shown. The action is as follows:--The steam chamber a is supplied with steam
through the top gauge cock, and being exposed to the atmosphere it is constantly
condensing the steam, thus causing a downward flow of clean water into the glass
tube and bottom gauge cock, and so excluding dirt or sediment which would other-
wise enter with dirty water from the boiler. When the blow through tap d is
opened the clear water is ejected, and on closing it any dirt or sediment that may
have entered the bottom gauge cock settles in the chamber c, which dirt is
immediately discharged the next time the blow off tap d is opened. In place of
the steam chamber a a tube of suitable length may be employed. In this case one
end of the tube is connected to the water gauge, and the other end to the steam
space of the boiler.
Having thus stated the nature of my Invention and described the manner of
performing the same, I wish it to be understood that I do not limit myself to the
details given as the same may be varied or modified, but what I claim as my
Invention is, the application of the chamber a connected to the water gauge of a
steam boiler, in the manner and for the purpose substantially as shewn and
described.
In witness whereof, I, the said John Blake, have hereunto set my hand and
seal, this Sixth day of July, One thousand eight hundred and eighty.