Improvements in Safety Devices for Gauge Cocks.
Year: 1888

page_text: Date of Application, 22nd Oct., 1888
Complete Specification Left, 18th July, 1889-Accepted, 22nd Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Safety Devices for Gauge Cocks.
I, DAVID SMITH of 16 London Road, Plaistow, in the County of Essex, Marine
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is a safety device in which upon the breaking of the
gauge glass a valve shall automatically be brought to its seating thus closing the outlet
and stopping the escape of steam and water.
I provide a brass or other socket which fits into the space within the cock and upon
which the glass tube rests when in place; this socket has openings through its walls
for the passage of the water to the glass and contains the valve and is also open at the
bottom so that upon the breaking of the glass the pressure underneath forces up the
valve and closes the outlet. As soon as the cock is closed the valvo drops of its own
accord leaving a clear through way again.
A pin or equivalent crosses the opening in the socket under the valve to prevent
the valve from falling out the valve may be of any suitable description.
This fitting can be applied equally well to existing cocks as to new ones made
for it.
ם
1
03 1 1
1000
COMPLETE SPECIFICATION.
Improvements in Safety Devices for Gauge Cocks.
DAVID SMITH 10 London Road Plaistow Essex 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 :-
It is a valve for fitting to gauge cocks, to prevent the overflow of hot water from
boiler in case the gauge glass is broken.
COMPLETE SPECIFICATION.
Improvements in Safety Devices for Gauge Cocks.
DAVID SMITH 10 London Road Plaistow Essex 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 :—
It is a valve for fitting to gauge cocks, to prevent the overflow of hot water from
boiler in case the gauge glass is broken.
It is perfectly safe.
No alteration to present fittings.
Will fit any gauge cock.
Requires no attention.
Lasts as long as the Engines.
It is not in the passage between the boiler and the gauge glass but below it.
No springs to break.
No screws to get out of order.
Being perfectly Automatic it cannot get out of order.
Prevents scalds.
A. A. Ordinary Gauge Cock.
P. Passage of Water from boiler into Gauge Glass D. through ports & also round
the sides of the Cage to the bottom of valve E.
B. Blow down through Gauge Cock.
D. Gauge Glass.
The pressure of steam on top of valve E prevents it from lifting, but if the gauge
glass is broken the pressure of steam on top of valve E is lost, & the area of the
bottom of valve E being greater than area of ports C. the extra pressure on bottom of
Valve E lifts it & shuts off the ports C. & entrance to gauge glass and thus prevents
the overflow of water from boiler.
G. G. Cage with valve E. fitted inside.

page_text: PARTICULARS HOW TO FIX GAUGE GLASS VALVES.
Suppose the Gauge Glass is in its place and it is desirable to put in a valve the
glass is removed in the usual manner and the old packing and the loose bottom in the
(bottom Gauge Cock) taken out, and the valve with its cage is dropped into the place
where the loose bottom came out of. The Gauge Glass is then replaced and the end
of the glass fits into the recess made for it in the valve cage instead of into the similar
recess in the false bottom, it is then repacked in the usual manner and requires no
further attention.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1st. That its action is Automatic.
2ndly. That there are no screws to get out of order or Springs to break.
3rdly. That if the Gauge Glass breaks the action of the Valve prevents the hot
water escaping from boiler.
1000
Dated Liis
R. W. SIMPSON,
14, Bellerby Terrace, West Hartlepool, Agent for David Smith.