AN IMPROVED APPARATUS FOR THE PROPULSION SUCTION AND MOVEMENT OF AIR FLUIDS AND GASES
Year: 1884

page_text: I, CLARENCE WILLIAM CROSSLEY of 14 St Mary Axe, in the City of London,
Draughtsman do hereby declare the nature of my invention for AN IMPROVED
APPARATUS FOR THE PROPULSION SUCTION AND MOVEMENT OF AIR FLUIDS AND
GASES to be as follows:-
I form an Improved Apparatus for the purposes set forth in the above title by
taking a piece of sheet metal of any form which has greater length than breadth,
this piece of sheet metal I bend on a line passing at an angle across its breadth so as.
to make the two equal or similar portions into which the line divides it approach each
other, these equal or similar portions after being thus bent towards each other may
be curved so that they still more approach one another the rate of curvature may
be constant all over or may vary at different parts of the surface of each of the
above mentioned equal or similar portions Instead of bending the piece of sheet
metal on the line passing at an angle across its breadth this line may be an imaginary
one and the curvature of the surface of each of the equal or similar portions into
which it divides the piece of sheet metal may begin at the line and extend at a
constant or varying rate right and left of it over the two equal or similar portions.
The equal or similar portions may be curved away from instead of towards each
other or one away from and one towards the other. The two equal or similar
portions may also be made of separate pieces of sheet metal curved if desired and
one portion may be hinged to the other portion so as to allow of their being
adjusted by suitable means at any required angle with one another.
Having formed an apparatus of sheet metal as above described I fasten it to a
shaft or spindle in such a manner that the axis of the shaft or spindle will pass
through the line crossing the breadth of the piece of metal and will also bisect the
angle included between the two equal or similar portions which have been made
to approach each other in the above described manner. The shaft or spindle may
be rotated by any suitable means. Two or more of the above described apparatus
may be fastened one behind the other on one shaft or spindle or on separate shafts
or spindles revolved in different directions, a combination may be made by cutting
pieces from one of the apparatus and fastening them to another.
Any or all of the above described apparatus may be wholly or partly surrounded-
by or encased in a cylinder cone or ring either revolving with the apparatus or
remaining stationary.

page_text: .
COMIDEIE
DIFICATION.
I, CLARENCE WILLIAM CROSSLEY of 14 St. Mary Axe, in the City of London,
Draughtsman, do hereby declare the nature of my invention for AN IMPROVED
APPARATUS FOR THE PROPULSION SUCTION AND MOVEMENT OF AIR FLUIDS AND
GASES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :—
I form an improved apparatus for the purposes set forth in the above title by
taking a piece of sheet metal of any form or shape which has greater length than
breadth such for instance as is shewn by A B C D Figure 1, of the accompanying
drawing. The length may be about twice the width. This piece of sheet metal
of whatever shape it may be I slightly bend on a line ef passing at an angle
across its breadth so as to make the two equal or similar portions into which
the line ef divides it approach each other: a plan or section at right angles to ef
will therefore appear as shewn at Figure 2: the angle that e f makes with C DĎ
may be about 45 degrees. The equal or similar portions Afe D and Bfe C
having been thus bent slightly towards each other are then curved so that they
still more approach one another as shewn in plan or section at Figure 3 or Figure 4:
I prefer however the section shewn by Figure 3. The angle included within ab
and cb may be about 110 degrees and the height from 6 to x about half A D
or B C Figure 1. The rate of curvature may be constant all over or may vary at
different parts of the surface of each of the above mentioned equal or similar
portions. The piece of metal having been thus bent and curved will appear in side
view as shewn by Figure 5, in front view as shown by Figure 6 and in plan or
section as shewn at Figures 3 or 4.
The curving of the surfaces of the equal or similar portions Afe D and B fe C
is a very important feature of my invention for if they be kept flat when bent
towards each other there is a very marked reverse or return current of the air or
other medium in which the apparatus is working but by curving them this return
current is almost if not entirely done away with.
Instead of bending the piece of sheet metal on a line passing at an angle across
its breadth this line may be an imaginary one and the curvature of the surface of
each of the equal or similar portions into which it divides the piece of metal may
begin at the position of the imaginary line and extend at a constant or varying rate
right and left of it over the two equal or similar portions: a section in this case
would appear similar to Figure 7.
The two equal or similar portions may also be made of separate pieces of sheet
or cast metal curved as desired and joined together at the line efor one may be
hinged to the other at line e f so as to allow of their being adjusted by suitable
means at any required angle with one another.
Having formed an apparatus of sheet metal as above described I fasten it to or
on a shaft or spindle in such a manner that the axis of the shaft will pass through
the line ef crossing the breadth of the piece of metal and will also bisect the angle
included between the two equal or similar portions which have been made to approach

page_text: each other in the above described manner or manters. In Figures 3, 4, 5 and 7
of the accompanying drawing the axis of the shaft or spindle is shewn (in dotted
lines) as horizontal and the line, ef as seen in side view at Figure 5 is shewn at
right angles to the axis, but the shaft may also be placed so that its axis is
perpendicular or at angle between perpendicular and horizontal and the line e f
may make any desired angle with the axis of the shaft in whatever position it (the
shaft) may be placed. The shaft may be supported in bearings in the usual way
and be rotated by any suitable means. For the movement of the air or other
medium in which the apparatus works in the direction shewn by the arrows in
Figure 5 it must be revolved in the direction of the arrows shewn in the front
view Figure 6.
Two or more of the above described apparatus may be fastened behind in front
of or above one another on one shaft or on separate shafts revolved in different
directions.
Any or all of the above described apparatus may be wholly or partly surrounded
by or encased in a cylinder cone or ring either revolving with the apparatus or
remaining stationary.
I wish it to be understood that although I have described the means which from
some hundreds of experiments I have found best for practically carrying out my
invention I do not confine myself to the precise details, relative proportions or
dimensions or to the precise shape or configuration, angle or angles, curve or curves
herein described and shewn as it will be readily seen that the same may be
considerably varied without departing from the invention.
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. An improved apparatus for the purposes set forth in the title and the method
or methods of constructing said apparatus from a piece of sheet metal of the shape
or configuration and in the manner or manners substantially as hereinbefore
mentioned described and referred to and as shewn in the accompanying drawing,
and any mere modification thereof.
2. An improved apparatus for the purposes set forth in the title and the method
or methods of constructing said apparatus by joining attaching or hinging together
two equal or similar pieces of sheet metal in such a manner that they approach or
incline towards one another the said pieces of metal having their surfaces curved
in the direction in which they are inclined substantially as herein before described
mentioned or referred to, and any mere modification thereof.
3. The curving of the surfaces of the hereinbefore mentioned and described
equal or similar portions of a piece of sheet metal in the manner or manners
mentioned and described whereby the reverse current of the air or other medium
referred to in the Specification is almost if not entirely done away with.
4. The use of improved apparatus for the propulsion suction and movement of
air fluids and gases and the method and methods of constructing said apparatus
substantially in the manner or manners and for the purpose or purposes mentioned
described and referred to, and any mere modification thereof.
Dated this third day of March 1885.