IMPROVEMENTS IN STEAM BOILERS; IN A SAFETY COMBINATION THEREWITH CONSISTING OF SAFETY VALVE; AUTOMATIC FLOAT AND WATER GUAGE; MUD COLLECTOR AND STEAM GUAGE DOUBLE LIFT AND BADATWA TXIROMAN BLAZ вовоепри TATT.
Year: 1883

page_text: LETTERS PATENT to Joseph Hall of Manchester in the County of Lancaster
for an Invention of "IMPROVEMENTS IN STEAM BOILERS; IN A SAFETY
COMBINATION THEREWITH CONSISTING OF SAFETY VALVE; AUTOMATIC FLOAT
AND WATER GUAGE; MUD COLLECTOR AND STEAM GUAGE DOUBLE LIFT AND
BADATWA TXIROMAN
BLAZ
вовоепри TATT.
ח.
STAD COCK BOR 9713
PROVISIONAL SPECIFICATION left by the said Joseph Hall at the Office of
the Commissioners of Patents on the 20th February 1883.
"IMPROVEMENTS IN
JOSEPH HALL of Manchester in the County of Lancaster
STEAM BOILERS; IN A SAFETY COMBINATION THEREWITH CONSISTING OF SAFETY
VALVE; AUTOMATIC FLOAT AND WATER-GUAGE; MUD COLLECTOR AND STEAM
GUAGE; DOUBLE LIFT AND FORCING INJECTOR; BACK PRESSURE VALVE AND STOP
COCK FOR STEAM BOILER,
"
The object of my Invention is to combine in one apparatus an automatic spring
spiral safety valve, water guage and automatic water float the two latter appliances
pointing to one level at the same time by means of a hand or index on the float
rocking shaft and the water in a vertical guage glass, with a mud collector at the
bottom of the combination, and a mud cock for drawing off the refuse matter at
pleasure. The steam guage is placed below the safety valve on either side for
convenience The double lift and forcing injector is for feeding the boiler with
water through the combination or it's connections thereto. The injector is an
improvement on my patent for Injectors for which letters patent have been granted
to me bearing date January 4th 1878 and numbered 60 in the drawings of which
see Fig. 2 The improvements consist of a hollow double coned spindle and reduced
water supply orifice for lifting the water from below it's level and forcing the same
into the boiler. The back pressure valve is a vertical one in connection with the
stop valve for retaining the water in the boiler, by the aid of the stop valve spindle
or the clack in the back pressure valve with pet tap for letting off the air when
starting the Injector, the back pressure valve can be taken out anytime for repairs
while the boiler is working by the use of the stop valve. The whole of the above
is in connection with one cast iron vessel forming a combination, a water pipe
leading from the bottom and a steam pipe leading from the top of the said vessel
to the boiler thereby only requiring two holes in the boiler in lieu of cutting say
for example from twelve to twenty holes as ordinarily required to connect the said
fittings separately which is remedied by the application of my safety combination..

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Hall in the Great Seal Patent Office on the 18th August
1883.
JOSEPH HALL of Manchester in the County of Lancaster. "IMPROVEMENTS IN
STEAM BOILERS; IN A SAFETY COMBINATION THEREWITH CONSISTING OF SAFETY
VALVE; AUTOMATIC FLOAT AND WATER-GUAGE MUD COLLECTOR AND STEAM
GUAGE; DOUBLE LIFT AND FORCING INJECTOR BACK PRESSURE VALVE AND STOP
COCK FOR STEAM-BOILERS
"
The object of my Invention is to combine in one apparatus an Automatic spring
spiral safety valve, water guage and Automatic water float, the two latter appliances
pointing to one level at the same time by means of a hand or index on the float
rocking shaft and the water in a vertical guage glass with a mud collector at tho
bottom of the combination, and a mud cock for drawing off the refuse matter at
pleasure. The steam guage is placed below the safety valve on either side for
convenience. The double lift and forcing injector is for feeding the boiler.with
water through the combination or its connections thereto. The injector is an
improvement on my patent for injectors. for which letters patent have been granted
to me bearing date January 4th 1878 and numbered 60 in the drawing of which see
Fig 2 The improvements consist of a hollow double coned spindle and reduced water
supply orifice for lifting the water from below its level, and forcing the same into
the boiler. The back pressure valve is a vertical one in connection with the stop
valve for retaining the water in the boiler; by the aid of the stop valve spindle or
the Clack in the back pressure valve with pet tap for letting off the air when
starting the injector, the back pressure valve can be taken out at any time for
repairs while the boiler is working by the use of the stop valve. The whole of
the above is in connection with one cast iron vessel forming a combination a water
pipe leading from the bottom and a steam pipe leading from the top of the said
vessel to the boiler thereby only requiring two holes in the boiler in lieu of cutting,
say for example from twelve to twenty holes as ordinarily required to connect the
said fitting separately which is remedied by the application of my special com-
bination And in order that my Invention may be more fully understood, I have
caused to be appended hereto a sheet of drawings marked with letter of reference,
to which I will now refer.
Fig 1 is a front elevation of a steam boiler provided with the safety combination
according to my Invention
Fig 2 is a longitudinal section of the double lifting and forcing injector forming
a part of the safety combination made accordingly to my Invention, but which may
also be used independently for feeding all classes of steam boilers with water. For
the sake of clearance, parts which fit closely, are in the drawing, shown with
clearance spaces between.
Referring to Fig 1 A is the body of the combination cored out internally for the
float to work up and down with the rise and fall of the water level (automatically)
in connection with the radial arm B outside of the body A the pointer radiating
on the index 1. 2. 3. 4. 5. 6. above and below the average working level.
Immediately to the right of this pointer is water level in the water-guage glass C
the two pointing to one level or horizontal line with average water level in boiler.
On top of water-guage glass C is steam-guage D for registering the steam pressure
in boiler which is in horizontal line with steam pipe Ĕ From boiler immediately
above is the Automatic safety-valve or valves in the enclosed case F for venting
the steam above the set working pressure. The take out tube G and refuse

page_text: discharge cock H are in connection with mud collector I for drawing off the
refuse matter at pleasure, for cleansing purposes. The back pressure valve J is for
retaining the water in the boiler, in connection with water pipe K and stop valves L.
and L¹ both these valves may be closed and any part of the combination repaired
even while the boiler is working, the pet cock M is for letting off the air when
starting the injector N for feeding the boiler with water through the water main O
and Othen through the back pressure valve J and stop valve L' in the boiler.
P is the steam pipe from boiler to the injector, Q is the water supply pipe (lifting)
R is the steam spindle for starting the injector and S the overflow pipe for discharge
of air and water when starting the injector Instead of requiring to cut say
from 12 to 20 holes ordinarily in the boiler to connect the said fittings only two
are required by the application of my safety combination. which ensures a better
safety and prevention of boiler explosions. Referring to Fig 2 the great features
of the double lifting and forcing injector consist in forming the water supply
orifice A¹ of a less diameter than usual, that is about one-third or say by a standard
No 5 injector of 5 millimeters. the water supply orifice should be 10 millimeters
and in the hollow steam-lifting spindle B¹ for creating a vacuum when starting the
injector. When the small coned end of the spindle B¹ is brought down into the
first orifice D' about half way the spindle collar E' is lifted from off the seat of the
steam nozzle C¹ and the steam entering B¹ creates a vacuum in the small orifice or
passago D' which lifts or sucks the water through the small water supply orifice A¹
from or below the injector. By the aid of these two improvements (the spindle B¹
and small orifice A¹) the water can be lifted double the height as in the ordinary
injector and by drawing the spindle B¹ two or three threads further back, the
coned part F¹ of the hollow spindle B' will be brought inside the steam nozzle C¹
and the steam will then pass by the parallel part H' into the orifice D¹ Co-mingling
with the water in proper proportions that is by the aid of the coned part F¹ of the
hollow spindle B' being regulated up or down sufficient to force the water through
a second orifice 1' into the boiler to suit the various steam pressures.
Having now described and ascertained the nature of my said Invention I wish it
to be understood that I claim as my Invention
CLAIMS
Firstly the special construction and mode of application of the safety combination
or apparatus and the grouping of the same together substantially as herein-
before more particularly described and shewn in Fig 1 by the annexed
drawings
Secondly the special construction of the hollow coned spindle end inside the
injector orifice and nozzle and the cones thereon substantially as described
and illustrated in Fig 2 by the annexed drawings
Thirdly the formation of a small or reduced water supply orifice operating
with the steam spindle cones and nozzle in the manner described and
represented by Fig 2 in the annexed drawings for the purpose specified.
In witness whereof I the said Joseph Hall have hereunto set my hand and
eal this sixteenth day of August in the year of our Lord One thousand eight
undred and eighty-three.
(L.S.) JOSEPH HALL