Improvements in Roof Ventilators.
Year: 1892

page_text: Date of Application, 5th Apr., 1892
Complete Specification Left, 4th Oct., 1892-Accepted, 19th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in Roof Ventilators.
WILLIAM MORRISON of 2 John Street Terrace, New Swindon, Wilts. Smith
do hereby declare the nature of this invention to be as follows:-
This invention relates to a circular circulating air chamber with circular escape-
ment holes in bottom flange for allowing the obnoxious vapours to pass freely away
into the atmosphere. With eight vertical conical flues attached to circular
circulating air chamber for conveying vapours into air chambers. I employ in the
interior of ventilator two suspended circular whirlwind fans which are connected by
rods to cone at bottom of outside fan which is driven by atmospheric pressure of
wind and is so arranged with four canvas fluttering windsails revolving between
and around vertical lubricating tube, which takes the form of an upright shaft
causing a quick up current making down draught impossible.
The
The fan appliances also consist of hanger frame bent at top ends, and is so
arranged to hang in two clips and two guides with screwed bolts and nuts passing
through clips keeping the hanger frame in one position, showing the advantage of
being able, if required, to take out the inside fan appliance of ventilator.
portable hanger frame having a large boss in the centre with box nut for
tightening the fan spindle tube to hanger frame which extends from top of
uptake and bottom portion.
The same constitutes as a whole an improved appliance for roof ventilators.
In the accompanying sheets of drawings I have represented the whole.
Fig. 1. Sectional plan thro' bottom of C.
Fig. 2. Plan on top of fan P.
Fig. 3. Vertical section thro' centre of ventilator.
Fig. 4. Elevation of roof ventilator.
A. is a flange casing and basement for fitting on ridge of roof or any angle.
B. represents circular circulating air chamber attached to top of basement A
with eight circular holes round bottom marked T for allowing the escapement of
vapours from the interior of ventilator.
C. Conical uptake fastened on top portion of circular circulating air
chamber B.
D. Eight semi-circular circulating conical flues secured to top flange of circular
air chamber B and lower portion of conical uptake C for conveying obnoxious
vapours.
E. Eight vertical funnels round outside of conical uptake C for assisting the
suction from interior of conical uptake C and preventing down draught.
F. Circular cape attached to top of vertical funnels E preventing gusty winds
entering top portion of conical uptake C.
G. Eight nozzles fixed to cape F for assisting the up current of suction from
uptake C.
H. Eight portable scrolled brackets fixed to cape F and leather washer at bottom
of oil cup $ for preventing any unpleasant noise in rough weather and assisting to
support outside fan M.
J. are two clips and guides fixed to the interior of two of the vertical
funnels E.
K. Portable hanger frame extending down interior of conical uptake C with
bent ends and holes in same resting in guides J and secured by screws R on
outside.
L. Vertical tube with centrical socket in centre the bottom of same passing

page_text: through screwed boss on hanger frame K with box nut for fastening centre of
hanger frame and tube together.
M. Large outside fan driven by atmospheric pressure of wind causing whirlwind
fans marked P P and canvas fluttering sail Q to work simultaneous in the interior
of uptake C.
N. Brass bush at top of vertical tube L for allowing fan tube O to revolve on,
and securing tube O from rising with pin in same.
O. Tube passing from oil cup S to centre in vertical tube L and are fixed to it
fan M cone at bottom of same and two fans marked P P.
PP. Two suspended circular circulating air extracting whirlwind fans with four
rods connected to cone at bottom of fan M and driven by fan M.
Q. Four canvas fluttering windsails attached to fans P P and round vertical
tube L for assisting the suction in the interior of C.
R. denotes two screws for holding secure the ends of suspending bracket K.
S. is an oil cup screwed to top of spindle O for lubricating centre in vertical
tube L and brass bush N.
T. are eight circular holes round and on underside of air chamber B.
U. are eight semicircular outlets in top of air chamber B for allowing the air
to pass up conical flues D.
V. are four vertical rods for suspending whirlwind fans P P and fastened to
inside of cone at base of fan M.
Dated this 4th day of April 1892
COMPLETE SPECIFICATION.
Improvements in Roof Ventilators.
WILLIAM MORRISON of 2 John Street Terrace New Swindon, Wilts. Smith
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 a circular circulating air chamber with circular escape-
ment holes in bottom flange for allowing the obnoxious vapours to pass freely away
into the atmosphere. With eight vertical conical flues attached to circular
circulating air chamber for conveying vapours into air chambers. I employ in the
interior of ventilator two suspended circular whirlwind fans which are connected by
rods to cone at bottom of outside fan which is driven by atmospheric pressure of
wind and is so arranged with four canvas fluttering windsails revolving between and
around vertical lubricating tube which takes the form of an upright shaft causing
quick up current making down draught impossible.
a
The fan appliances also consist of hanger frame bent at top ends and is so
arranged to hang in two clips and two guides with screwed bolts and nuts passing
through clips keeping the hanger frame in one position shewing the advantage of
being able if required to take out the inside fan appliance of ventilator. The
portable hanger frame having a large boss in the centre with box nut for tightening
the fan spindle tube to hanger frame which extends from top of uptake and bottom
portion.
"
The same constitutes as a whole an improved appliance for roof ventilators.
In the sheet of drawings "left with the Provisional Specification I have
represented the whole.
Fig. 1. Sectional plan through bottom of C.
Fig. 2. Plan on top of fan P.
Fig. 3. Vertical section thro' centre of ventilator.
Fig. 4. Elevation of roof ventilator.
A. is a flange casing and basement for fitting on ridge of roof or any angle.
B. represents circular circulating air chamber attached to top of basement A

page_text: with eight circular holes round bottom marked T for allowing the escapement of
vapours from the interior of ventilator.
C. Conical uptake fastened
chamber B.
on top portion of circular
circulating air
D. Eight semicircular circulating conical flues secured to top flange of circular
air chamber B and lower portion of conical uptake C for conveying obnoxious
vapours.
E. Eight vertical funnels round outside of conical uptake C for assisting the
suction from interior of conical uptake C and preventing down draught.
F. Circular cape attached to top of vertical funnels E preventing gusty winds.
entering top portion of conical uptake C.
G. Eight nozzles fixed to cape F for assisting the up current of suction from
uptake C.
H. Eight portable scrolled brackets fixed to cape F. and leather washer at
bottom of oil cup S for preventing any unpleasant noise in rough weather and
assisting to support outside fan M.
J. are two clips and guides fixed to the interior of two of the vertical
funnels E.
K. Portable hanger frame extending down interior of conical uptake C with bent.
ends and holes in same resting in guides J and secured by screws R on outside.
L. Vertical tube with centrical socket in centre the bottom of same passing
through screwed boss on hanger frame K. with box nut for fastening centre of
hanger frame and tube together.
M. Large outside fan driven by atmospheric pressure of wind causing whirlwind
fans marked P P and canvas fluttering sail Q to work simultaneous in the interior
of uptake C.
N. Brass bush at top of vertical tube L for allowing fan tube O to revolve on
and securing tube O from rising with pin in same.
O. Tube passing from oil cup S to centre in vertical tube L and are fixed to it
fan M cone at bottom of same & two fans marked P P.
PP. Two suspended circular circulating air extracting whirlwind fans with four
rods connected to cone at bottom of fan M and driven by fan M.
Q. Four canvas fluttering windsails attached to fans P P and round vertical.
tube L for assisting the suction in the interior of C.
R. denotes two screws for holding secure the ends of suspending bracket K.
S. is an oil cup screwed to top of spindle O for lubricating centre in vertical
tube L and brass bush N.
T. are eight circular holes round and on underside of air chamber B.
U. Eight semicircular outlets in top of air chamber B for allowing the air to
pass up conical flues D.
V. Four vertical rods for suspending whirlwind fans P P and fastened to inside.
of cone at base of fan M.
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-
1. The two suspended circular whirlwind fans with four canvas fluttering wind-
sails for causing suction, and one portable hanger frame for supporting and allowing
fans to revolve in ventilator.
2. Circular circulating air chamber with circular escapement holes for conveying
and dispersing obnoxious vapours.
.נ.ית
Ontahan 1000
WILLIAM MORRISON.