IMPROVEMENTS IN STEAM ENGINES
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by Carl Kesseler at the Office of the
Commissioners of Patents on the 5th April 1880. A communication from
Max Gehre, of Dessau, in the German Empire.
CARL KESSELER, of 63, Mohrenstrasse, Berlin, W., in the Empire of Germany,
Civil Engineer and Patent Solicitor. "IMPROVEMENTS IN STEAM ENGINES." A
communication from Max Gehre, of Dessau, in the German Empire.
The cylinder rotates round a fulcrum pin on one side, and is formed or fitted
with a disc which may be in two halves if of large size.
It has then a gutter shaped shoulder in which the two halves of the disc are
inserted, and then fastened together through lashing pieces. Smaller cylinders
however will be cast in one piece with the disc.
These
The cylinder is mounted eccentrically with the fly wheel shaft. The rim between
which the cylinder disc rotates is screwed to the base plate of the machine or may
be-cast in one piece with the same; it is double, and carries between its two parts
four or any other number of friction rollers which can be adjusted and removed;
the same may be made fast with wedges or in any other suitable manner.
friction rollers constitute the bearing points of the cylinder with the rotating disc.
The piston rod head embraces a crank pin on the fly wheel or a crank pin on a
crank on the fly wheel shaft. The fulcrum pin of the cylinder is housed in a
bearing, and has inside two ports which admit the inlet and outlet of the steam.
They discharge on the one side into the cylinder in the ordinary way, and on the
other side into a steam drum.
The two and fro motion of the piston causes a rotating movement of the fly
wheel and shaft as well as of the cylinder.
In the drum which is closed on the side away from the cylinder by a stationary
disc there are the expansion valve plates or wings as well as the reversion valve
plate or wing. Through the stationary disc two outlet pipes and the inlet pipo
discharge into the drum.
When the reversion valve plate or wing is placed on the right of the inlet pipe
then the outlet pipe terminating on the same side of the reversing valve is closed
by a contrivance hereinafter more particularly described, while the one discharging
on the opposite side is opened.
By the turning of the cylinder the drum is also turned, and the admission port
is exposed to the inlet until it has passed the expansion valve plate or wing, where-

page_text: upon expansion sets in, until it has passed the other expansion valve, and now the
outflow commences until the shutting off by the reversing valve begins. During this
discharge fresh steam enters on the other side of the piston; this play repeats itself
alternately. The two expansion valves, as well as the reversing valve, are fitted
each on one of three shafts lying in one another, and in such manner that the
reversing valve is fitted on the outside one, one expansion valve on the middle one
and the other expansion valve on the inner shaft, which by means of levers working
against an indented quadrant, are capable of being adjusted or set. If one lever is
moved towards the left, the corresponding expansion valve will also be moved
towards the left, whereby the expansion commences carlier. In the same manner
it is with the valve on being turned in the opposite direction.
If the machine is moved from right to left the outlet pipe is closed by a piston
valve while the inlet pipe and the other outlet pipe discharging on the opposito
side of the reversing valve are opened. The regulation of the outlet pipes in
reversing will be effected by means of the following contrivance -The inlet pipe
crosses one of the three valve cylinders, and the outlet pipes discharge into the two
other valve cylinders. In the same are placed piston valves. If the first named
valve is closed the other two are opened as the valves are pushed back far enough
for the inflow as well as the outflow to be free. The valve rods of the valves are
held fast on one side by means of a cross bar. On the same is fixed a screw spindle,
while the valve rod for the third valve on its upper end is cut with a similar screw
thread. The femalo threads of both the screw rods are in the vanes of tooth
wheels; prolongations of the vanes of these wheels are so enclosed by the bearings
as to prevent their moving in a lateral direction.
If one wheel is turned then the other wheel makes the opposite movement.
The reversing valve can be moved as far to the left or right as the inlet and
outlet openings allow, whereby the lead is greater or smaller.