IMPROVEMENTS IN PORTABLE AND OTHER STEAM ENGINES IN WHICH
Year: 1884

page_text: the Engine is Attached Directly to the Boiler.
WILLIAM HORNSBY and ROBERT EDWARDS both of Spittlegate Iron Works
Grantham in the County of Lincoln Engineers do hereby declare the nature of
our invention for IMPROVEMENTS IN PORTABLE AND OTHER STEAM ENGINES IN
WHICH THE ENGINE IS ATTACHED DIRECTLY TO THE BOILER to be as follows:-
In constructing Compound and other Engines in which the Cylinders are
attached directly to a steam boiler, we use a boiler of the pattern known as the
Locomotive, or Cylindrical Multitubular Type, and over the fire box end of the
boiler the steam or top part of the boiler is raised up to form a sufficiently large
chamber or dome to receive the Cylinders inside, thereby completely immersing the
Cylinders as also the steam chests (and in Compound Engines the pipe or passage
that carries the exhaust steam from the high pressure cylinder to the Steam chest
of the low pressure cylinder) thus entirely preventing all Condensation of the
steam in the cylinder, steam chests or connecting passage, and also doing away
entirely with all cocks or steam traps, necessary for getting rid of condensed water
in the usual form of jacketting.
In order to make the pistons and slides accesible and also that the cylinders can
be easily removed when required, we make the cylinders so that the piston rod
end goes in the steam dome first, and cause necks at that end to project through
the front end plate of the steam dome, so as to get the piston and slide rods and
exhaust pipe through this plate, these necks having shoulders inside which abut
against the inside of the plate to make joints, nuts being screwed on out side,*
which also assists in staying the dome against the steam pressure, or we put packing
glands round some or all of these necks to form steam tight joints.
.
The hind end of the cylinder casing is bolted by an external flange to the back
plate of the steam dome so as to make a joint with the plate of the dome.

page_text: the Engine is Attached Directly to the Boiler.
WILLIAM HORNSBY and ROBERT EDWARDS, both of Spittlegate Iron Works,
Grantham, Lincolnshire, Engineers, do hereby declare the nature of our invention
for IMPROVEMENTS IN PORTABLE & OTHER STEAM ENGINES IN WHICH THE ENGINE
IS ATTACHED DIRECTLY TO THE BOILER and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
In constructing Compound and other Engines in which the Cylinders are
attached directly to a steam boiler, we use a boiler of the pattern known as the
Locomotive or Cylindrical Multitubular type, and over the fire box end of the
boiler the steam or top part of the boiler is raised up to form a sufficiently large
chamber or dome to receive the cylinders inside, thereby completely immersing the
cylinders as also the steam chests, (and in Compound engines the pipe or passage
that carries the exhaust steam from the high pressure cylinder to the steam chest
of the low pressure cylinder) thus entirely preventing all condensation of the
steam in the cylinder, steam chests or connecting passage and also doing away
entirely with all cocks or steam traps necessary for getting rid of condensed water
in the usual form of jacketing.
In order to make the pistons and slides accesible and also that the cylinders can
be easily removed when required we make the cylinders so that the piston rod
end goes in the steam dome first and cause necks at that end to project through
the front end plate of the steain dome, so as to get the piston and slide rods and
exhaust pipe through this plate, these necks being outside the plate, having
shoulders inside which abut against the inside of the plate to make joints, nuts
being screwed on outside which also assists in staying the dome against the steam
pressure, or we put packing glands round some or all of these necks to form steam
tight joints.
•
The hind end of the cylinder casting is bolted by an external flange to the back
plate of the steam dome so as to make a joint with the plate of the dome.
DESCRIPTION OF DRAWINGS.
The Dome A of the boiler shews the cylinders B placed in them being bolted to
the back of the Dome A by the flange C whilst the necks D of the cylinders
through which the piston rods project are attached by being shouldered against the

page_text: 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
In constructing Compound and other steam Engines placing the cylinders and
steam chests in a steam dome over the fire box end of a Locomotive or cylindrical
Multitubular Boiler so that the pistons & slides can all be readily got at from the
back end, suitable necks held by glands or nuts being attached to the front end so
as to pass out the piston & slide rods as above explained and described.
Dated this nineteenth day of August 1885
WILLIAM HORNSBY.
R. EDWARDS.