IMPROVEMENTS. IN STEAM ENGINES WITH OSCILLATING CYLINDERS"
Year: 1883

page_text: LETTERS PATENT to Carl Jacobsen, of the firm of Carl Jacobsen & Co,
Stockholm, in the Kingdom of Sweden, for an Invention of "IMPROVEMENTS.
IN STEAM ENGINES WITH OSCILLATING CYLINDERS"
PROVISIONAL SPECIFICATION left by the said Carl Jacobsen at the Office
of the Commissioners of Patents on the 13th October 1883.
"
CARL JACOBSEN, of the firm of Carl Jacobsen & Co, Stockholm, in the Kingdom
of Sweden. "IMPROVEMENTS IN STEAM ENGINES WITH OSCILLATING CYLINDERS
This invention relates to improvements in steam engines with oscillating
cylinders and the object of my improvements is the application of curved valve-
faces of the slide valves and the means for tightening the same.
The valve faces are arranged at right angles to the axis of oscillation of the
cylinder and curved according to a circle, the centre of which is in the axis of
oscillation of the cylinder. Both faces are elastically pressed together by C shaped
springs either by arranging a sliding distributing box containing the admission and
exhaust channels or by placing the pivot bearings of the cylinder into sliding
frames and constructing the distributing case immovably. The tension of such
springs may be adjusted by screws attached to suitable parts of the engine frame.
These improvements may be applied to single cylinder steam engines as well as
to compound engines.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Carl Jacobsen in the Patent Office on the 10th April 1884.
CARL JACOBSEN, of the firm of Carl Jacobsen & Co, Stockholm, in the Kingdom
of Sweden, "IMPROVEMENTS IN STEAM ENGINES WITH OSCILLATING CYLINDERS
This Invention relates to improvements in steam engines with oscillating
cylinders, in which the piston rods are connected directly with the crank pins, and
the object of my improvements is the arrangement of curved valve-faces of the
slide-valves, and the means for tightening the same, serving as well as a bearing
for the oscillating cylinder or for steam distributing purposes.
The valve-faces are arranged at right angles to the axis of oscillation of the
cylinder and curved according to a circle, the centre of which is in the axis of
oscillation of the cylinder. Both faces are elastically pressed together by C-shaped
springs either by arranging a sliding distributing box containing the admission
and exhaust channels or by placing the pivot bearings of the cylinder into sliding
frames and constructing the distributing case immovably. The tension of such
springs may be adjusted by screws attached to suitable parts of the engine frame.
These improvements may be applied to single cylinder steam-engines as well as
to compound engines.
In order to make my said invention more clearly underst od I will describe it
with reference to the accompanying drawings in which figure 1 is a side elevation
of a single cylinder steam engine constructed according to my invention; figure 2
is a plan, partly in section, and figure 3 a back view.
A is the frame of the engine, which may be placed in any position required.
B is the oscillating cylinder, the pivots f of which are supported by the bearings g.
The convex valve-face p is attached to the side of the cylinder and shaped as the
arc of a circle, the centre of which is in the centre-line of the pivots f. The
distributing-box q is guided by slide-frames and provided with a concave face
corresponding with the convex face p; it is pressed elastically to the face p by
the spring r, the pressure of which may be regulated by the screw 8. The
admission channels b are connected to the steam pipe a and the exhaust channel d
with the exhaust pipe e. The piston rod i communicates the motion of the steam
piston to the main shaft n with the fly wheel m without intermediation of a
connecting rod.
Figure 4 is a side elevation, figure 5 a plan, and figure 6 a front view, all partly
in section, of a vertical engine constructed on the same principle. In lieu of
pressing the distributing box towards the cylinder as it is describe in the
foregoing engine, in this modification the bearings g. of the pivots f of cylinder B
slide in slide-frames v.and are pushed towards the fixed distributing-box by
springs r, the pressure of which may be adjusted by screws 8.
Figure 7 is a side elevation, partly in section of a compound engine constructed
according to my invention; figure 8 is a top view thereof with the bearings
removed from the cranks; figure 9 is a front view, partly in section. The steam
entering through the steam pipe a to the admission channel 6 causes at first the
high pressure cylinder B to work, and passes then through one of the channels x
(which are to be sufficiently wide for serving as receivers) to the expansion or low
pressure cylinder B¹, wherefrom it escapes through the channel d and exhaust
pipe e.
Having thus fully described my invention, what I desire to claim and secure by
Letters Patent is:-
First. The construction of a steam engine with oscillating cylinder, s :bstantially
as described and illustrated in figures 1, 2 and 3.

page_text: Second. The construction of a vertical steam engine with oscillating cylinder,
substantially as described and illustrated in figures 4, 5 and 6.
-
Third. The construction of a compound steam engine with oscillating cylinders,
substantially as described and illustrated in figures 7, 8 and 9.
Fourth. In compound steam engines the combination of the fixed distributing
box containing the admission channel b, both the communicating channels a,
Berving as receivers, and the exhaust channel d with convex slide-faces of the
cylinders B and B' and the means for pressing such slide faces to the concave faces
of the distributing box, substantially as set forth.
In witness whereof I the said Carl Jacobsen have hereunto set my hand and
seal this Seventh day of April in the year of our Lord One thousand eight hundred
and eighty four.
CARL JACOBSEN (L.B.)