An Improved Means and Method of Ventilating the Roofs of Railway Stations, Greenhouses, Sheds, and other Structures.
Year: 1889

page_text: Date of Application, 7th Oct., 1889
Complete Specification Left, 5th July, 1890-Accepted, 9th Aug., 1890
PROVISIONAL SPECIFICATION.
An Improved Means and Method of Ventilating the Roofs of Railway
Stations, Greenhouses, Sheds, and other Structures.
I THOMAS WILLIAM HELLIWELL, of Brighouse, in the County of York, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to ventilate roofed structures in such a manner that
whilst allowing for the entrance and egress of atmospheric air, the improved system
absolutely prevents the entrance of rain, snow and other moisture.
In carrying out my invention I place at given distances apart on the ridge of the
structure a number of suitably shaped blocks of wood or other material. These blocks
together with the spaces between the said blocks are afterwards covered all along the
ridge by zinc or other suitable metal or material. Along the ridge of the structure I
also fix long narrow strips of zinc or other metal or material placed parallel with the
zinc covering already mentioned, but the inner edge of this strip is bent or curved
inwards, which whilst allowing the passage of atmospheric air to and from the building
prevents rain or snow from being beaten past the bent edge of the strip. In order to
increase the ventilation of such structures the paris described may be compound, that
is to say, each block of wood may have two backs cr ridges one above the other to
receive a second covering of zinc or other metal, underneath which is inserted the
bent edge of another strip placed parallel thereto whereby the means of ventilating
the building is increased. At intervals in the roof of the building, say between the
wood blocks, a louver or door is employed which may be opened and closed by means
of rods and levers for the purpose of regulating or increasing and diminishing the
quantity of air admitted to the building.
When ventilating by means of louvers, those at present constructed have permitted
rain and snow to be beaten in at the sides, but I now propose to make each louver of
such a shape or form as to overlap or extend over each other in such a manner that
whilst preventing the admission of rain also allows a free passage of air to and from
the building.
Dated this 4th day of October 1889.
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
An Improved Means and Method of Ventilating the Roofs of Railway
Stations, Greenhouses, Sheds, and other Structures.
I, THOMAS WILLIAM HELLIWELL, of Brighouse, in the County of York, Civil
Engineer, 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 :-
The object of my invention is to ventilate roofed structures in such a manner that
whilst allowing for the entrance and egress of atmospheric air, the improved system
prevents rain, snow, and other moisture, from beating in.
In carrying out my invention i place at given distances apart on the ridge or other
suitable place of the structure a number of suitably shaped blocks of wood or other
material. These blocks, together with the spaces between the said blocks, are
afterwards covered all along the ridge by zinc or other suitable metal or material.
Along the ridge of the structure 1 also fix long narrow strips of zinc or other metal
or material placed parallel with the zinc covering already mentioned, but the inner
edge of this strip is bent or curved inwards, which whilst allowing the passage of
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page_text: atmospheric air to and from the building, prevents rain or snow from being beaten
past the bent edge of the strip.
In order that my invention may be better understood, I will now make reference
to the accompanying sheet of drawings illustrative thereof, wherein Fig. 1 is cross-
section of such parts as are necessary to illustrate my invention. A represents the
rafters employel to form the ridge of a roofed structure upon which are fixed at
suitable distances apart suitably shaped blocks of wood or other material B, which
blocks, together with the spaces between each block, are covered in the whole length
of the ridge by a cover or cap made of zinc or other suitable metal or material.
Along the ridge and on each side thereof I also fix long narrow strips D composed of
zinc or other suitable metal or material, the upper end of each strip being bent or
curved as shewn at a, which whilst allowing the passage of atmospheric air to and
from the building, will prevent rain or snow from beating past the bent edge a of the
said strip D and so entering within the building.
In order to increase the ventilation of such structures according to my invention,
some of the parts described may be duplicated or compounded, that is to say, between
the hollow blocks of wood B and the outer cap or cover C, I may use, as shewn in
Fig. 2, another or middle covering E made of any suitable metal or material, which
provides enlarged or increased facilities for the ingress and egress of air.
At intervals in the roof of the building, say between the wood blocks B or other
suitable position, a door F is employed, which may be opened and closed at pleasure
by means of rods or levers G for the purpose of regulating or increasing and
diminishing the quantity of air admitted to the building as shewn at Fig. 3.
According to well known methods of ventilating buildings by means of louvers,
those at present constructed have allowed rain and snow to be beaten in at the sides,
but I propose to make each louver of such a shape or form as to overlap or extend
over each other in such a manner that whilst preventing the admission of rain, they
will allow the free passage of air to and from the building. This part of my invention
is shewn in Fig. 4, where H are louvers placed parallel to each other, the upper and
lower edges of which are curved, in the manner shewn at b, and they are so placed
in relation to each other that it would be impossible for rain or snow to be blown
within the structure. Instead of the louvers H being curved as shewn in the
drawings, they may be formed of other shapes or designs.
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
Firstly. For ventilating at the roofs of buildings, the use of blocks such as B in
combination with the bent strips D and outer covering substantially as described
and shewn herein.
Secondly. For ventilating at the roofs of buildings, the use of blocks such as B
in combination with narrow bent strips D, middle covering E, with outer cap or
covering C, all as shewn and described.
Thirdly. For ventilating roofs or sides of buildings, the use of louvers such as H
having their edges bent and arranged or placed in relation to each other in manner
substantially as described and shewn in Fig. 4.
Dated thie 4th day of July 1890
TASKER & CROSSLEY,
Halifax, Agents.