AN IMPROVED CEILING VENTILATOR
Year: 1885

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I, JOHN EBENEZER BARWICK of 1 Hopeville Villas, St Peters, Kent, Builder do
hereby declare the nature of my invention for AN IMPROVED CEILING VENTILATOR
to be as follows:-
The apparatus consists of chamber which would as a rule be fixed between the
joists over the apartment to be ventilated, the bottom part of the chamber
being perforated, and the top of same terminating in a conical or other shaped
outlet which with the necessary elbows and tubing would conduct the heated and
vitiated air either into a chimney or through an external wall or roof or wherever
it was found to be most convenient.
The chamber will be made of any material or metal but preferably of zinc, the
bottom part may be plain. and fixed flush with the ceiling, or moulded and
ornamented and projecting downwards in which case the mouldings and ornaments
may if thought desirable also be perforated.
The chamber would also be made with or without a centre tubo for the pipe of
gas fittinga to pass through. It would also be made of various shapes and sizes to
meet the circumstances of each case to which it was applied.
I JOHN EBENEZER BARWICK of 1 Hopeville Villas St Peters Kent Builder &c. do
hereby declare the nature of my invention for AN IMPROVED CEILING VENTILATOR
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :—
The apparatus consists of a chamber which would as a rule be fixed between the
joists over the apartment to be ventilated, the bottom part of the chamber is open
or perforated and at the upper part one or more outlets which with necessary

page_text: elbows and tubing would conduct the heated and vitiated air into a chimney or
through an external wall or roof or wherever it was found to be most convenient.
The outlet may be of any shape but will generally be of an oblong shape the
advantage of the obling outlet and pipe will be that being wide but not deep it
will afford greater space without unnecessarily weakening the timbers where they
have to be cut away to let the pipe come level with the top of the joists.
The chamber and the piping may be made of any material but will generally be
made of zinc or iron. The bottom part may be either plain and fixed flush with
the ceiling, or moulded and ornamented and projecting downwards in which case
the mouldings and ornaments may if thought desirable also be perforated.
The chamber will be made with or without a centre tube for the pipe of gas
fittings to pass through. It may be made of various sizes and shapes to meet the
circumstances of each case to which it may be applied.
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
1. That the apparatus consists of a chamber which would as a rule be fixed
between the joists over the apartment to be ventilated, the bottom part of the
chamber will be either open or perforated, and in the upper part one or more outlets
which with necessary elbows and tubing or pipe will conduct the heated and
vitiated either into a chimney or through an external wall or roof or wherever it
was found to be most convenient.
2. That the chamber will be made of any material but generally of zinc or iron,
the bottom part will be plain and fixed flush with the ceiling, or moulded and
ornamented and projecting downwards, in which case the mouldings and ornaments
may if thought desirable also be perforated..
3. The outlet may be of any shape but will generally be of an oblong shape,
the advantage of the oblong outlet and pipe will be that being wide but not deep
it will afford greater space without unnecessarily weakening the timbers where
they have to be cut away to let the pipe come level with the top of the joists.
4. That the chamber will be made with or without a centre tube for the pipe of
gas fittings to pass through.
5. That it may be made of various sizes and shapes to meet the requirements of
each case to which it was applied.
Dated thin 10th dore of A 100K