Improved: Room Ventilator.
Year: 1891

page_text: Date of Application, 8th Apr., 1891...
Complete Specification Left 30th June. 1891-Accepted. 1st Aug. 1891
·PROVISIONAL SPECIFICATION.
.
Improved: Room Ventilator.
CHARLES HENSHAW 83 Piccadilly Manchester, Musical Instrument Manu-
facturer do hereby declare the nature of this invention to be as follows:-
Ventilator for room, door & window frames, consists of wood or metal casing,
the front part forming a shallow case or box to open or close with a slide, when
open it collects the hot air which passes through a flat funnel attached to the case
work, & which is intended to fit in a slot cut in the top of the door or window
frame, the funnel passes to the outside & turns down a little, and attached to the
same is formed, a hollow. round case which is covered in at the top & sides &
perforated: underneath & projects from, the outside. of the door or window frame.
Inside the round casing are fixed fans, which revolve and distribute the hot and
cold air.
.
COMPLETE SPECIFICATION.
Improved Room Ventilator.
1, CHARLES HENSHAW, of 83, Piccadilly, Manchester, in the County of
Lancaster, Musical Instrument Manufacturer and Importer 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 invention relates to ventilators for drawing or forcing in fresh air or
drawing or forcing out vitiated air from buildings or enclosed spaces and movable
vehicles.
It consists essentially in the combination with an ordinary grid, slide, or the
like, for regulating the inlet or controlling the outlet of fresh or vitiated air; of a
chamber for collecting the air provided with a fan or fans for drawing in or forcing
out the air.
It will be fully described with reference to the accompanying drawings in which
(as an example) is shown a ventilator-designed according to my invention.
Fig. 1, end elevation.
Fig. 2, front elevation.
T
Fig. 3, plan.
Fig. 4, transverse sectional elevation.
In carrying out my invention I at present prefer to construct the ventilator as
shown with a casing A. of any suitable material to form a chamber a for collecting
the air. The chamber a I extend downwards at one end to form a space a¹ in
which I fit an ordinary slide or grid for regulating the ingoing or outgoing air and
at the other end I also extend or enlarge it to form an annular chamber 6 in which
I mount a shaft or number of short shafts & provided with vanes B forming one or
more fans for drawing in or forcing out the air. The annular chamber bis
provided at the bottom with perforations which may or may not be provided
with a slide for regulating the inlet or outlet of air. I also attach or form integral
with the bottom of the annular chamber b a plate C, bent or curved at the front
side so as to guide the current of incoming air. And I sometimes use a spiral or
other spring to keep the regulating grid open; and to close or partially close it I
attach a cord to the opposite end of the grid, passing over a pulley fixed to the
[ Prive Ed.]
Fig. 4, transverse sectional elevation.
In carrying out my invention I at present prefer to construct the ventilator as
shown with a casing A of any suitable material to form a chamber a for collecting
the air. The chamber a I extend downwards at one end to form a space a¹ in
which I fit an ordinary slide or grid for regulating the ingoing or outgoing air and
at the other end I also extend or enlarge it to form an annular chamber b in which
I mount a shaft or number of short shafts b¹ provided with vanes B forming one or
more fans for drawing in or forcing out the air. The annular chamber bis
provided at the bottom with perforations " which may or may not be provided
with a slide for regulating the inlet or outlet of air. I also attach or form integral
with the bottom of the annular chamber b a plate C, bent or curved at the front
side so as to guide the current of incoming air. And I sometimes use a spiral or
other spring to keep the regulating grid open; and to close or partially close it I
attach a cord to the opposite end of the grid, passing over a pulley fixed to the
D31

page_text: framework of the door or window and terminating at a point within easy reach
from the floor.
In the example shown the ventilator would be fixed in the top of a door, window
or the like with the ordinary regulating slide or grid inside the structure or vehicle
and the fan chamber b outside, though it will be obvious that such position may be
reversed if desired. It will also be apparent that instead of mounting the vanes B
on a horizontal shaft or shafts they may be mounted on vertical shaft or shafts or
in some cases it might be advantageous to arrange the fan shaft in an inclined
position. The vanes B are preferably made of some light material such as talck or
the like so as to offer the least resistance to their actuation.
In operation the current of air will pass through the perforations 6", actuating
the vanes B and causing them to revolve so as to draw out the vitiated air from
the interior of the structure or vehicle, through the chamber a and the ordinary
grid or slide.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
―
The combination with an ordinary grid, slide, or the like for regulating the inlet
or controlling the outlet of fresh or vitiated air into or from structures or moving
vehicles, of a chamber for collecting the air provided with a fan or fans for drawing
in or forcing out the air substantially as described.
Dated this 20th day of June 1891
CHARLES HENSHAW,
Applicant.