AN IMPROVED BLOWING ENGINE to be as follows:-
Year: 1885

page_text: I, THORSTEN NORDENFELT of 53 Parliament Street in the City of Westminster,
Civil Engineer do hereby declare the nature of my invention for "AN IMPROVED
BLOWING ENGINE to be as follows:-
:-
""
This invention has for its object an improved blowing engine.
The improved blowing engine consists of a cylindrical casing, in the axis is
a shaft carrying a radial piston or partition. Another cylinder is mounted
eccentrically within the cylindrical case so as to be in contact with its cover or
end and to enter recesses in them. The inner cylinder also touches the casing
along a line parallel to the axis and it is sufficiently large to include the shaft
within it. A longitudinal slot is made in it on one side, out through which the
piston or partition projects.
The inlet passage to the cylindrical casing is on one side of the line of contact
with the inner cylinder and the outlet passage is on the other side thereof. On the
shaft being revolved air is drawn into the casing by the passage which is in rear of
the piston or partition and is expelled by the passage in front of it.
The inner cylinder is supported at its ends on rollers.

page_text: mounted eccentrically within the cylindrical case so as to be in contact with its
cover or end and to enter recesses in them. The inner cylinder also touches the
casing along a line parallel to the axis and it is sufficiently large to include the
shaft within it. A longitudinal slot is made in it on one side, out through which
the piston or partition projects.
The inlet passage to the cylindrical casing is on one side of the line of contact
with the inner cylinder and the outlet passage is on the other side thereof. On the
shaft being revolved air is drawn into the casing by the passage which is in rear
of the piston or partition and is expelled by the passage in front of it.
The inner cylinder is supported at its ends on rollers.
Figure 1 of the drawings hereunto annexed shews a longitudinal section and
Figure 2 a transverse section of a blowing engine arranged as above described.
A is the cylindrical casing with its inlet and outlet ports B and C-D is the
axle passing through the centre of this casing and having fixed to it the radial
partition E-I is the inner cylinder the ends of which enter recesses F in the end
covers of the casing A and rest on friction rollers H which turn on studs fixed to
the end covers. As above stated the radial partition E passes through a slot in the
circumference of the inner cylinder so that when the axle D is rotated a rotating
motion is also given to the cylinder. Preferably I drive the axle of the blowing
engine in such manner as to keep the inner cylinder I rotating continuously at a
uniform speed throughout each revolution.
To effect this I drive the axle from a driving shaft mounted in bearings
concentrically with the inner cylinder and parallel thereto and I transmit motion
from the driving shaft to the axle by a crank pin on the end of the driving shaft
entering a slot formed longitudinally in a radial arm fixed on the end of the axle.
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. The combination of the outer casing A provided with inlet and outlet
passages B and C the axle D carrying the radial partition E and the inner
cylinder I with its ends entering recesses in the end covers of the outer casing A
substantially as described.
2. The construction of a blowing engine substantially as herein before described
and illustrated in the drawing annexed.