Improvements in the Construction of Outlet Ventilators.
Year: 1886

page_text: · PROVISIONAL SPECIFICATION.
Improvements in the Construction of Outlet Ventilators.
JOHN CRAIG Marypark Langbank Portglasgow Scotland Joiner do hereby declare
the nature of my invention for IMPROVEMENTS IN THE CONSTRUCTION OF OUTLET
VENTILATORS to be as follows
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This invention has for its object, the providing of an outlet for vitiated air or
gases, from the inside of Houses or other inclosures. Also preventing the outside
Elements from entering by said Outlet. And is arranged as follows:
The bottom part is formed of an Oblong Funnel, the top of which is divided into
about three equal parts, one part on each side is covered in an angular direction,
forming roof. The centre part is left open, into which is inserted another Oblong
Funnel the size of the apperture. This Funnel is left open at top or covered with
perforated material. It is also divided verticaly into two or more compartments
according to size of Ventilator. An intercepting channel is inserted into bottom
Funnel, in a position to catch anything that may decend in the top Tunnel and
discharge same at the open outlets at each end. Said Outlets being above the level of
roof of House, at the part where the Ventilator may be placed. A Metallic Plate for
fixing to roof, having upright flanges over which the Ventilator is sliped down.
Oblong bolt holes in flanges, so as to admit of adjustment to roofs of different
pitches. The above Ventilators may be made of wood Iron, Zinc, Lead, or any other
suitable material.
Dated this Seventh day of December 1886.

page_text: .
JOHN CRAIG Marypark Langbank Portglasgow Joiner I do hereby declare
the nature of my invention for OUTLET VENTILATORS to be as follows and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The object of this invention is, for the providing of vertical outlets open at top, for
vitiated air or gases, from the inside of Houses or other enclosures. Also the
preventing of the outside elements from entering by said outlets.
These improvements are produced, or affected, by means of connecting Funnels of
different dimensions, one of which contains intercepting Channel or Channels. The
bottom part is formed of an oblong Funnel, the top of which is divided into about
three equal parts, one part on each side is covered in an angular direction, forming
the roof, the centre part is left open, into which is inserted another Oblong Funnel the
size of the aperture, this funnel may be left open at top, or covered with a perforated
material. Said Funnel is also divided vertically, forming it into two, or as many
Funnels as may be required to suit the different proportions and sizes of Ventilators.
An intercepting Channel or Channels is inserted into the bottom Funnel, in such a
position so as to catch anything that may descend in the top Funnel and discharge the
same at the open outlets at each end, said outlets being above the level of the roof of
the House or other enclosure at the part where the Ventilator may be placed. I reserve
power to place Louver openings in top Funnel, as in certain cases it may be an
advantage. To make these Ventilators suitable for Railway Carriages, Ships, or other
vehicles, when in motion, the end outlets will be provided with valves hinged at top to
open outwards. When in motion the front one will remain closed, and the one behind
will open, it will then become an acting outlet for air, to fill the partial vacum
created by the motion of the Ventilator through the air. The method of fixing the
Baid Ventilators to roofs, is by using a metallic plate or plates having flanges to go
underneath slates and screwed to roof also upright flanges outside of which the
Ventilator is placed, these plates are hinged at top so as to admit of adjustment to
roofs of different pitches. Tie rods with oblong bolt holes also to admit of adjustment
for fixing Ventilators to roof-plates. These Ventilators may be made of Wood, Iron,
Zinc, Lead, or any other suitable material. They could be made of circular or square
Funnels, as in some cases they might be required for architectural effect, I reserve full
power to do so if required.