Year: 1886

page_text: Steam.
We JOHN EDEY of 10 St. Swithins Lane in the city of London Chartered
Accountant and GEORGE WRIGHT of Cottenham Road Rotherham Engineer 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:
Fig. 1 is a plan of the valve arrangement shewn under plate f.
Fig. 2 is an elevation showing the interior.
Fig. 3 is a plan of the lever arrangement in steam chamber above plate f.
Fig. 4 is the slide bar under plate f
Fig. 5 is the valve with its link connection to float wire.
a is a whistle which is screwed on to pipe d.
b is a section of boiler plate underneath which the alarm is suspended.
c is a lock nut which makes the joint good inside of boiler...
d is the pipe on which the alarm case is suspended.
e is the cover for lever chamber which prevents any steam passing through to
the whistle except by way of the valves p & l.
.
f is a division plate which carries the steam lever arrangement above it and the
high and low water arrangement underneath.
g is a case which acts as a protector to the valve arrangement and float, the
bottom end of which is open to the water and in the top underneath the flange are.
four holes which admit steam on the top side of the float.
h is the float.
i is the float wire which is connected to the valve 2 by means of a link and has
a nut on the bottom.
jis the link underneath valve l.
is a circular slide screwed into plate f and has a hole bored vertically from the
top end to the centre and across hole bored to meet the vertical hole in the centre
through one side only. The bottom part of this side is solid and has a collar on
the bottom end with a pin through it to prevent the valve from getting too low.

page_text: is the valve which slides upon k. This valve has two holes one placed above
the other in such a manner that when the valve is lifted the bottom hole is
opposite to the crosshole in the slide k and when the valve is lowered on to the
collar with the pin through the top hole in the valve is opposite to the hole in
slide k.
m is a forked lever the centre of which is suspended by a bracket under plate f.
the fork end is connected with valve by means of a pin which is attached to
each side of the valve. On the other end of the lever is a ball which serves as a
balance weight to the valve and float wire i.
n is the balance weight.
The lever m has a branch which projects downwards and on this branch is
firmly attached the weight o.
p is a ball valve which is fitted in to a seat in plate f.
•
q is a connection pin which is inserted in a hole in the valve p and in a corre-
sponding hole in lever 7. One end of lever r is suspended on a bracket by means
of a joint pin, the other end is hung in the vertical double joint 8.
T is another lever one end of which is suspended on a bracket with pin through
the same. It is connected also with the double joint s and the two extreme ends
are bent outwards as shown in plan fig. 3 and the weight u is fastened on to the
bent arms which are set to suit the pressure required.
.
Having described the various parts connected with our arrangement we will now
describe its working.
Dealing with the alarm for high steam, the action being when the steam
pressure becomes too great.it lifts the ball valve p and the connection pin q which
raises the lever r and also the vertical joint s lifting the lever t which carries the
weights.
In vertical section fig. 2 and below the plate fis shown the valve for high and
low water and in the position shown the valve covers the ports. The lever with
the weight o always keeping it in that position except when acted upon by
the float. The float is shown in position with the water at its proper working
height.
When the water lowers in the boiler to the low water line the bottom of the
float then rests on the nut which is screwed on the bottom of the float wire and
the weight of the float pulls down the valve and raises the weight o in a circular
position outwards the steam passing through the top hole in the valve that being
then opposite to the hole in the slide, the steam escapes up the centre of the slide
and out of the crosshole above plate fescaping into the lever chamber and so blows
the whistle and keeps the same blowing until the water rises in the boiler to
relieve the float from the nut on the wire when the weight o instantly shuts
the valve.
For high water when the water rises to the high water line the top of the float
tube presses against the crossbar under the valve which lifts the valve and the
weight o in a circular direction inwards, the steam then- escapes through the
bottom hole in the valve and by the same passage as for low water into the lever
chamber and so blows the whistle which keeps whistling until the water is
lowered and the float tube leaves the crossbar when the weight o instantly closes
the valve:
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

page_text: 2. The compound lever motion for high steam with its valve arrangement also
3. The vertical slide with its valve and lever also
4. The float and its wire as described in specification and shown in drawing.
Other means may be adopted to accomplish the same purpose without departing
from the principles of this specification.
Dated this 11th day of November 1886.
JOHN EDEY.
GEO. WRIGHT
Witness to the signatures of
•
the said John Edey and
George Wright,
WILLIAM WHITFIELD,
Elm Tree House,
Moorgate, Rotherham,
Clerk to Messrs. Edey, Simpson & Co.,
Sheffield.