Improvements in Extracting and Weatherproof Ventilators.
Year: 1896

page_text: Date of Application, 26th June, 1896
Complete Specification Left, 26th Mar., 1897-Accepted, 8th. May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Extracting and Weatherproof Ventilators.
THOMAS WHITEHEAD, 103 Great George Street, Liverpool, Practical Doctor
of Smoky Chimneys and Flues, Ventilating Engineer, and Manufacturer of Patent
Ventilators and Galvanised Iron Chimney Cowls, do hereby declare the nature of
this invention to be as follows:-.
My invention applies to improvements in extracting and weatherproof ventilators,
adapted specially for ship's use, but applicable also to buildings and ventilating
purposes generally.
The advantages of it will be better understood from the accompanying description
and drawings in which Fig. 1 is a sectional elevation and Fig. 2 plan.
A. plain pipe or air-shaft fixed through centre of base B on which are placed a
series of vertical guards C C, which, together with the outer guards D D support
a ceiling plate E with weather, cover F over.
In the ceiling plate E above the inner sides of the vertical guards C C are
placed a series of vent-holes G, and directly under G through base B are placed a
second series of vent-holes H H leading to outlets J, both series providing escape
for wind or weather-sprays.
The mode of action is as follows:-
The wind, or sprays from heavy seas entering on the weather side is directed by
the outer guards D D into the chambers C C, the curved sides of which break the
force, and expel it through the vent-holes G and H H, and, while passing, extracts
the vitiated air, etc. from the exit slits which lie between the inner and outer
guards. The vent-holes not only prevent the weather force penetrating to the
inner, shaft, but destroy the peculiar humming noise common in automatic
ventilators.
The areal spaces both of air-shaft and exit passages greatly exceed previous
makes of this type of ventilator, thereby rendering the ventilation much more
economical and effective than hitherto.
Dated this Twenty-fifth day of June 1896.
THOMAS WHITEHEAD.
COMPLETE SPECIFICATION.
Improvements in Extracting and Weatherproof Ventilators.
THOMAS WHITEHEAD, 103 Great George Street, Liverpool, Practical Doctor
of Smoky Chimneys and Flues, Ventilating Engineer, and Manufacturer of Patent
Ventilators and Galvanised Iron Chimney Cowls, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention applies to improvements in extracting and weatherproof ventilators,
adapted specially for ship's use, but applicable also to buildings and ventilating
purposes generally.

page_text: The advantages of it will be better understood from the accompanying description
and drawings accompanying the Provisional Specification in which Fig. 1 is a
sectional elevation, and Fig. 2 plan.
A. plain pipe or air-shaft fixed through centre of base B, on which are placed
a series of vertical guards C. C. which, together with the outer guards D. D.
support a ceiling plate E with weather cover F over.
In the ceiling plate E above the inner sides of the vertical guards C. C. are
placed a series of vent-holes G, and directly under G through base B are placed a
second series of vent-holes H H, leading to outlets J, both series providing escape
for wind or weather-sprays.
The mode of action is as follows:-
The wind or sprays from heavy seas entering on the weather side is directed by
the outer guards D D. into the chambers C C, the curved sides of which break
the force and expel it through the vent-holes G and H H, and, while passing,
extracts the vitiated air, etc. from the exit slits which lie between the inner and
outer guards.
The vent-holes not only prevent the weather force penetrating to the inner
shaft, but destroy the peculiar, humming noise common in automatic ventilators.
The areal spaces both of air-shaft and exit passages greatly exceed previous
makes of this type of ventilator, thereby rendering the ventilation much more
economical and effective than hitherto.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. An entirely new arrangement and position of vertical curved guards for the
purposes described.
2nd. The position and object of the vent-holes G and H. H. in combination with
the guards (as herein described) for the purposes of increasing the areal spaces and
exit passages, and also minimising the peculiar humming noises common in
automatic ventilators, substantially as described.
Dated this 25th day of March 1897.
THOMAS WHITEHEAD.