IMPROVED BOILER FOR GENERATING STEAM
Year: 1872

page_text: PROVISIONAL SPECIFICATION left by William Edward Kochs at the
Office of the Commissioners of Patents, with his Petition on the
2nd May 1872.
I, WILLIAM EDWARD KOCHS, of the City of Manchester, in the
County of Lancaster, Engineer, do hereby declare the nature of the said
Invention for "IMPROVED BOILER FOR GENERATING STEAM," to be as
follows:-
My Invention relates to the class of boilers which are composed of
sections, so that a greater or a lesser number of sections may be
connected together to form a boiler of greater or lesser“ 'power." I
form each section of two or more tubes, which for distinction I will term
the horizontal tubes, although they may be situated in an inclined
position when at work. The said horizontal tubes are connected
together by means of a number of short tubes which I will term vertical
tubes and which are of a lesser diameter than the said horizontal tubes.
The said vertical tubes are fixed in orifices formed in the horizontal
_tubes_in_a_similar manner as when fixing the tubes in the tube-plates.of
locomotive boilers, the horizontal tubes being formed with flat or nearly
flat sides in order to facilitate the fixing of the said vertical tubes. The
outer tubes or the lower tubes in each section may be formed with one
flat side only if preferred.

page_text: Orifices corresponding in position with the said vertical tubes are
formed in the upper side of each upper horizontal tube, the tools
employed in the fixing of the vertical tubes or of a portion of them
being introduced through the said orifices. The said orifices are closed
by means of caps which can be readily removed when it is desirable to
cleanse the vertical tubes. The front end of each horizontal tube is or
may be closed by means of a metal plug which is forced into the end of
the tube and is retained in position by means of "cotters.". The end of
the said tube is slightly tapered or bell mouthed, a packing of copper or
other suitable metal or material being employed to ensure a tight
joint. The said plug is preferably fitted with a removable cap.
A number of sections so formed are placed side by side and close
together, and the steam and water spaces are connected together by
means of pipes. The heated gases from the furnace or furnaces are
caused to flow through the spaces between the horizontal rows of the
horizontal tubes, as, for example, in the case of sections having each
three horizontal tubes the said gases would flow through the space below
the lowest tubes in the sections, then through the space between the
said lowest tubes and the central tubes, and then through the space
between the said central tubes and the upper tubes.
In some cases and when it is desired to dispense entirely or to some
extent with brickwork the side sections are made to contain a greater
number of horizontal tubes than the intermediate sections, and the
horizontal tubes in the outer side sections are arranged to close the
spaces between the horizontal tubes in the next inner section. The said
side sections thus act as side walls for the furnace or furnaces and flues.
In such a case I prefer to cause the feed water to flow through the outer
side sections into the inner sections.
In some cases I apply horizontal tubes below the furnace or furnaces,
and connect the said tubes with the upper horizontal tubes by means of
vertical or nearly vertical tubes. In such a case the seating may be so
arranged as that the gases from the furnace or furnaces will be caused to
flow through side flues and through a bottom flue in a similar manner as
in the case of an ordinary Cornish boiler.