Improvements in Ventilators.
Year: 1896

page_text: Date of Application, 3rd Sept., 1896
Complete Specification Left, 2nd June, 1897-Accepted, 3rd July, 1897
I, JOHN TAYLOR back of 70 Haynes Street Rochdale in the County of Lancaster
Foreman Plumber do hereby declare the nature of this invention to be as follows:-
The object of this invention, is to construct a self acting outlet ventilator, for use
in sheds, mills, air shafts, and other places. For this purpose I provide a suitable plate
or plates with apertures in, on the back of each aperture are fixed hoppers or buffers
for the flaps or valves to rest against, round back edge of each aperture are fixed
a bevelled rim, tapering from top edge to the bottom. So that the flaps or valves
will more readily fall back in the hoppers or buffers after being closed with an
inrushing current. Also on bottom edge of bevelled rim are fixed pins or studs,
going through the flaps or valves to keep them in position.
It will readily be seen, in calm weather when most required, the flaps or valves are
always open.
Dated this second day of September 1896.
Improvements in Ventilators.
I, JOHN TAYLOR of 70 Back Haynes Street Rochdale in the County of Lancaster
Plumber 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 this invention is to construct a self-acting outlet ventilator for use in
sheds, mills, air shafts and other places. For this purpose I provide a suitable plate
or plates with apertures, on the back of each aperture are fixed hoppers or buffers for
the flaps or valves to rest against round back edge of each aperture is fixed a bevilled
rim tapering from top edge to the bottom so that the flaps or valves will more
readily fall back on the hoppers or buffers after being closed with an inrushing
current. Also on bottom edge of bevelled rim are fixed pins or studs to keep the
valves in position. In calm weather the flaps or valves remain open which is their
normal condition or state.
Fig. 1 is an elevation shewing my invention applied to a ventilator but shewing
the hood removed.
Fig. 2 is a plan of Fig. 1.
Fig. 3 is a modification shewing the hanging of the flaps. The upper part of the
ventilator is provided with an opening a on four sides, in proximity to which mica or
other flaps or covers b are provided on pins or supports b' about which they may move
as in Figs. 1 and 3. The normal state or position of the flaps are as shewn at b2
Fig. 1, i.e., open allow the foul air or other gases to pass from the ventilator.
In the event of a current of air impinging on the flap the same is caused to close
as shewn at ba as when current is in direction of arrow Fig. 1.
Thus according to my arrangement in a calm state of the atmosphere the valves or
flaps are open, as at 62 upon the occurrence of currents one or more are closed, thus

page_text: downdraught may be prevented yet vitiated air may be allowed to pass out thro
the one or more open valve or valves as the case may be.
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. In combination the inclined surfaces of and the openings a, with mica or other
flaps supported at their upper or lower extremities as and for the purposes herein set
forth.
J. H. BUTTERWORTH & Co.,
Rochdale, for the Applicant.