Year: 1898

page_text: I, GEORGE TAYLOR, of Netherleask, Ellon, in the County of Aberdeen, North
Britain, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved ventilator which is especially applicable
for farm steadings but which may also be used for schools, halls, public and other
buildings.
The ventilator may be constructed of cast metal in the form of a copestone
that is to say having two plates or shutters arranged in the form of an inverted V
when closed. The said shutters are pivotted or hinged at their lower edges so
that they can open upwards and in order to effect and control this movement
two arms or links may be employed pivoted at or near the centre of each shutter
and also to each other, the arrangement being such that when the central pivot
of the arms is raised, by means of a rope passing over a suitable pulley or pulleys,
the arms are distended and the ventilator opened, the reverse movement of the
rope closing the ventilator.
It will thus be seen that the ventilator is simple in construction and allows a
free escape of the air, which escape can be controlled by regulating the extent
to which the ventilator is opened.
When fitting the ventilator to public buildings, provision is made for pre-
venting the descent of rain which may pass therethrough. This may consist of
a suitable collecting vessel arranged beneath the ventilator having on outlet to
the roof of the building.
I, GEORGE TAYLOR, of Netherleask, Ellon, in the County of Aberdeen, North
Britain, 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:-
This invention relates to an improved ventilator which is specially applicable
for farm steadings but which may also be used for schools, halls, and other
buildings or places.
One method of constructing the ventilator is shewn in the accompanying
drawings, Fig. 1 being an elevation and Fig. 2 an end view, both partly in

page_text: section, of the ventilator when closed. Fig. 3 is a cross section of the upper
portion of the ventilator as it appears when open.
Fig. 4 is a cross section of a modified form of ventilator.
Referring to Figs. 1, 2, and 3 of the drawings, the ventilator may be con-
structed of cast or sheet metal in the form of a copestone that is to say having
two plates or shutters A arranged in the form of an inverted V when closed.
The said shutters A are pivotted or hinged at a so that they can open upwards
and in order to effect and control this movement two arms or links B may be
employed pivoted at or near the centre of each shutter, and also to each other
within a shackle b, the arrangement being such that when the shackle or central
pivot of the arms is raised, by means of the rope C passing over the pulley c
the arms B are distended and the shutters raised to the position shewn in Fig. 3,
the reverse movement of the rope, effected by the weight D, or other means,
closing the ventilator.
It will thus be seen that the ventilator is simple in construction and allows
a free escape of the air, which escape can be controlled by regulating the
extent to which the ventilator is opened.
I may also if desired arrange a plate E, centrally within the ventilator to act
as a diaphragm and allow the heated air to pass up on one side of it whilst the
fresh air descends on the other.
When fitting the ventilator to public buildings, provision is made for preventing
the descent of rain which may pass therethrough. This consists of a collecting
vessel arranged beneath the ventilator having an outlet f in communication
with the roof of the building.
As a modification I may dispense with the hinged shutters entirely, the
ventilation being constructed as shewn in Fig. 4. In this case the air passages
are always open, and the water collecting vessel in place of being situated below
the ventilator is arranged on the body thereof, the water thus accumulated
flowing out on to the roof of the building.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
The improved ventilator for farm steadings but which may be used for other
buildings or places, constructed and operating substantially in the manner as
herein before described and shewn in the accompanying drawings.
Dotad this 97th of Jul 1800
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.