Year: 1898

page_text: We, THOMAS MESSENGER, Engineer, of Paris House, Snargate Street, Dover,
Kent, and ALFRED ALLEN WHITLOCK, Electrical Engineer, of Park Street, Dover,
Kent, do hereby declare the nature of this invention to be as follows:-
Our invention relates to improvements in the construction of boilers whereby
the cleaning, repairing and inspection of the same are greatly facilitated.
It consists in forming the shell of two distinct portions, bolted or otherwise
jointed together by means of a suitable flange formed upon or attached to the
meeting edges of the upper and lower portions of the shell.
Or in lieu of the above we may arrange for only a portion of the shell to be
removable.
In applying our invention to a small boiler of the locomotive type such as is
used for a launch we may arrange for the entire upper portion to be removable so
as to permit of ready access to the whole of the tubes or interior of the boiler;
in this case we prefer to form the joint of two angle irons securely riveted around
the meeting edges of the upper and lower portions of the shell the two flanges
thus formed being bolted or otherwise securely jointed together.
For larger boilers of this type we may arrange for that portion only of the
shell immediately over the crown of the fire box to be so jointed.
We are aware that bolted joints on boiler shells are common in the vertical
and water tube types of boilers, and we do not refer to bolted joints for such
boilers, our object being to render accessible the internal parts of certain other
boilers one of which we have described.
We, THOMAS MESSENGER, Engineer, of Paris House, Snargate Street, Dover,
0 Kent, and ALFRED ALLEN WHITLOCK, Electrical Engineer, of Park Street, Dover,
Kent, do hereby declare the nature of this invention and in what manner the same
[Price 8d.

page_text: is to be performed, to be particularly described and ascertained in and by the
following statement;―
Our invention relates to improvements in the construction of steam boilers of
the locomotive or semi-portable type, whereby the cleaning, repairing and
inspection of the same are greatly facilitated.
It consists in forming the shell of two distinct portions, bolted or otherwise
jointed together by means of a suitable flange formed upon or attached to the
meeting edges of the upper and lower portions of the shell, as will be hereafter
explained. In lieu of the above we may arrange for only a portion of the shell
to be removable.
Referring to the accompanying sheet of drawings:-
Fig. 1 shews a longitudinal elevation of the improved boiler,
Figure 2 being an end elevation of the same.
Figure 3 is a plan view of Figure 1.
These drawings are diagrammatical, stays and the like being omitted, and are
only intended to illustrate the method of jointing, the boiler shewn being one
such as is used for a steam-launch.
In applying our invention to a small boiler of this type we may arrange for
the entire upper portion A to be removable from the lower portion B, so as to
permit of ready access to the whole of the tubes or interior of the boiler; in this
case we prefer to form the joint of two angle irons securely riveted around the
meeting edges of the upper and lower portions of the shell, the two flanges thus
formed being bolted or otherwise securely jointed together as shewn in the accom-
panying drawing.
The bolts, rivets or other attachments of the boiler shell to the detachable
portion, are, of course, of a strength dependent on the strength of the boiler and
the pressure to be withstood.
For larger boilers of this type we may arrange for a portion only of the shell
to be so jointed, and access can then be had to the interior of the boiler through
such jointed and detachable portion. Such detachable portion of the shell may
be that immediately over the crown of the fire-box or any other convenient portion.
We are aware that bolted joints on boiler shells are common in the vertical
and water-tube types of boilers, and we do not refer to bolted joints for such
boilers our object being to render accessible the internal parts of boilers of the
locomotive type, one of which we have described.
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 boilers of the locomotive or semi-portable type, forming the shell in two
portions, bolted or otherwise secured together by means of flanges formed upon
the meeting edges of the upper and lower portions of the shell, substantially as
and for the purposes described
1000
ed this 9th day
October 1898.
For the Applicants,
GEDGE & FEENY,
Chartered Patent Agents, 60, Queen Victoria Street, London, E.C.