IMPROVEMENTS IN VENTILATING STEAM VESSELS OR SHIPS."
Year: 1876

page_text: LETTERS PATENT to Henry Stott, of Greetland, near Halifax, in the County
of York, Cotton Warp Maker, for the Invention of "IMPROVEMENTS IN
VENTILATING STEAM VESSELS OR SHIPS."
led the 28th November 1876, and dated the 17th August 1876.
PROVISIONAL SPECIFICATION left by the said Henry Stott at the Office
of the Commissioners of Patents, on the 17th August 1876.
HENRY STOTT, of Greetland, near Halifax, in the County of York, Cotton Warp
Maker. "IMPROVEMENTS IN VENTILATING STEAM VESSELS OR SHIPS."
This Invention consists in ventilating ships by taking advantage of the heat
generated by a furnace or fire producing a current of air in distant places. I
propose to conduct this current as follows:-Outside the chimney or funnel I
fix a second chimney of larger diameter, closed at the bottom and open at the
top. By means of suitably placed pipes this chimney may be made to communicate
with the various compartments of the ship, and the heat of the internal chimney
being communicated to the air in the outer one will generate a current which can
only be supplied through the pipes by air drawn from the compartments with
which they communicate. The strength of this current may be regulated by valves
suitably places.
Instead of the above arrangement I may connect the pipes through which the
air passes with the furnace door or ashes place, and pass the air through the
furnace, by which process noxious gases will be consumed.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Stott in the Great Seal Patent Office on the 10th February
1877.
HENRY STOTT, of Greetland, near Halifax, in the County of York, Cotton Warp
Maker. "IMPROVEMENTS IN VENTILATING STEAM VESSELS OR SHIPS."
This Invention consists in ventilating ships by taking advantage of the heat
generated by a furnace or fire, producing a current of air in distant places. I
Povice Adl

page_text: propose to conduct this current as follows:-Outside the chimney or funnel I fix
a second chimney of larger diameter, closed at the bottom and open at the top. By
means of suitably placed pipos- this chimney may be made to communicate with
the various compartments of the ship, and the heat of the internal chimney being
communicated to the air in the outer one will generate a current which can only
be supplied through the pipes by air drawn from the compartments with which
they communicate. The strength of this current may be regulated by valves
suitably placed.
In order that my Invention may be more fully understood I herein give reference
to the accompanying Sheet of Drawings representing cross section of wooden ship
with my ventilating apparatus applied.
A is the funnel, and B the funnel casing, from which extend a series of pipes or
conduits C, D, terminating in the hollow iron girders E. These hollow girders
admit air through openings or perforations from the different decks, and also from
the space between the timbers, the air from the "hold" passing through openings
in the inner planking and escaping through the conduit or pipe D.
In iron ships instead of using longitudinal tubes to supply the place of the
hollow iron girders I may increase the number of conduits and construct them after
the manner shewn in Figs. 2, 3, and 4. A wider rango is thus provided for the
collection of foul air, and its escape being distributed over a larger area, will be
free from sensible draught.
Fig. 2 shews a conduit with one side openly imbricated; currents from left to
to right enter by extracting force while currents in the opposite direction are re-
pelled. On the other hand, as long as an onward course is preserved in the con-
tained air, it will have no tendency to escape.
In Fig. 3 the tube is made up of a series of truncated cones placed one within
another, and connected by short straps.
Fig. 4 is a spiral band answering the same purpose. The tube, however, should
be entire in the larger trunks, and as they approach the funnel sheath.
Instead of the foregoing arrangement I may connect the pipes through which the
air passes with the furnace door or ashes place, and pass the air through the furnace,
by which process noxious gases will be consumed.
Having thus described the nature of my Invention, and shewn by Drawings how
the same is to be or may be performed or carried into practice, I would have it
understood that I do not confine or restrict myself to the particular arrangement of
pipes or tubes herein shewn, as the same may be altered or modified according to
the different requirements of each case, but what I claim as my Invention and con-
sider to be new is,―
Firstly. The general arrangement of apparatus for ventilating steam vessels
.or ships as herein shewn and described, or any mere modification thereof.
Secondly. The employment of a funnel casing or sheath as and for the purpose
herein shown and described.
In witness whereof, I, the said Henry Stott, have hereunto set my hand
and seal, this Fifteenth day of February, in the year of our Lord (no
thousand eight hundred and seventy-seven.
Witness,
A. B. CROSSLEY,
Clerk to W. Tasker,
Patent Agent,
Halifax,
HENRY STOTT. (L.S.)
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