IMPROVEMENTS IN RAILWAY BRAKES
Year: 1879

page_text: LETTERS PATENT to Frederic Carl Glaser, of Berlin, in the Kingdom of
Prussia and Empire of Germany, Civil Engineer and Patent Agent, for the
Invention of "IMPROVEMENTS IN RAILWAY BRAKES." A communication from
Max Roessler, of Aunkofen, near Abensberg, Bavaria, Germany.
Sealed the 10th October 1879, and dated the 18th April 1879.
PROVISIONAL SPECIFICATION left by the said Frederick Carl Glaser at the
Office of the Commissioners of Patents on the 18th April 1879.
FREDERIC CARL GLASER, of Berlin, in the Kingdom of Prussia and Empire
of Germany, Civil Engineer and Patent Agent. "IMPROVEMENTS IN RAILWAY
BRAKES." A communication from Max Roessler, of Aunkofen, near Abensberg,
Bavaria, Germany.
This Invention relates to an improved brake-arrangement consisting of a
mechanism fixed underneath the railway train, and acting on the brake blocks
through friction wheels and a combination of levers; also of a mechanism which
may be fixed above the railway train for throwing the friction wheels in or out
of gear.
The accompanying Sheet of Drawing shows a brako arrangement embodying my
Invention.
On the axle of the vehicle is a conical friction wheel p made of wood, of metal,
or of other suitable material, which sets in motion the conical friction wheel a
directly this latter is brought into contact therewith.
The wheel a with its axis i which is posed or situated in the casting, and is
connected to the rod by means of a rotary coupling, may be raised, and this is
effected by drawing the lever i (Figure 4) to the right or to the left, whereby one
of the tappets x, x, is raised and presses against the plate y, y, which is fixed to the
upper end of the rod, thus causing the rod to be raised whether the lever i is
drawn to the right or left.
When the lever i is freed from its normal position, the bevel wheel sinks
down by reason of its own weight pressing on the bevel pinion p, which in its turn
drives the wheel a. With this wheel a on the same shaft is fixed by means of a
key a bevel toothed pinion d in connection with the toothed wheel c.

page_text: This toothed wheel c which is attached to a fixed axis at the casting z carries a
crank from which a draw rod is carried to the brake levers.
When the wheel a is turned in either direction the crank q will move in the one
or the other direction and actuate the draw rod 7, causing it to work the levers and
so press the brake blocks against the wheels.
If the brake should be thrown out of gear the wheel a is only raised just so much
as to keep it free from contact with p (which is effected by drawing the lever i to
the right or left). Then the pressure on the brake immediately ceases and the
brake blocks may by means of a weight and levers be held at a certain fixed
distance from the circumference of the wheel.
This brake may easily be applied to any existing carriage, and when a larger or
smaller number of brake carriages are in one train all-sucli brakes can be actuated
at the same moment.
The application and slacking of the whole of the brakes of a train is effected by
connecting the lever i, which may be fixed on the roof of the carriage, with a draw
cord or clain or other pulling medium, and controlling the same from the last or
the first brake carriage.
When the line or chain is drawn in one direction, whether forwards or backwards,
a slacking of the brakes takes place. When the line or chain is let go the friction
wheel a descends on to the friction wheel pand the brakes will be immediately and
collectively applied.
For drawing the ends of the line a winding arrangement or lever and weight to
which the said ends are attached may be provided, and by this means the brakes
be effectively worked, or when the line is only slightly in tension the brakes may
be only lightly applied according to the requirements of the case.
The line is connected to the levers by the two dises which are placed nearer or
further apart by the crank wand a screw, and acts on such levers by a single
turn.
In the case of it being necessary to remove a brake vehicle from a train, the line
or chain is disconnected from the lever i of the respective carriage, the lever pulled
and held in position by means of the stop bar t so that the friction wheel a occupies-
a raised position.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederic Carl Glaser in the Great Seal Patent Office on the 15th
October 1879.
FREDERIC CARL GLASER, of Berlin, in the Kingdom of Prussia and Empire
of Germany, Civil Engineer and Patent Agent. "IMPROVEMENTS IN RAILWAY
BRAKES." A communication from Max Roessler, of Aunkofen, near Abensberg,
Bavaria, Germany.
This Invention relates to an improved brake arrangement consisting of a
mechanism fixed underneath the railway train and acting on the brake blocks,
through friction wheels and a combination of levers, also of a mechanism which
may be fixed above the railway train for throwing the friction wheels in or out of
gear.
On the accompanying Sheet of Drawing Figure 1 is a longitudinal section
showing the under frame of a railway carriage with this improved brake-arrange-
ment applied; Figure 2 is a plan view of part of Fig. 1, and Figure 3 a cross
section of same; Figure 4 showing detached parts drawn to an enlarged scale.
On the axle of the vehicle is a conical friction wheel p made of wood, of metal,
or of other suitable material, which sets in motion the conical friction wheel a
directly this latter is brought into contact therewith.
The wheel a with its axis c, which is in the casting and is connected to the
rod by means of a rotatory coupling, may be raised, and this is effected by drawing
the lever i (Fig. 4) to the right or to the left, whereby one of the tappets x, x, is raised
and presses against the plate y, y, which is fixed to the upper end of the rod, thus
causing the rod to be raised whether the lever i is drawn to the right or to the
left.
When the lever i is freed from its normal position the bevel wheel sinks down
by reason of its own weight, pressing on the bevel pinion p, which in its turn drives
the wheel a. On the same shaft as this wheel a is fixed by means of a key a bevel
toothed pinion d in connection with the toothed wheel e.
This toothed wheel e which is attached to a fixed axis at the casting, carries
a crank from which a draw rod is carried to the brakes' levers.
When the wheel a is turned in either direction the crank 9 will move in the one
or the other direction, and actuate the draw rod r, causing it to work the levers and
so press the brake blocks against the wheels.
If the brake should be thrown out of gear the wheel a is only raised just so
much as to keep it free from contact with p (which is effected by drawing the
lever i to the right or to the left). Then the pressure on the brake immediately
ceases and the brake blocks may by means of a weight and levers be held at u
certain fixed distance from the circumference of the wheel.
This brake may be easily applied to any existing carriage, and when a larger or
smaller number of brake carriages are in one train all such brakes can be actuated
at the same moment.
The application and the slacking of the whole of the brakes of a train is effected
by connecting the lever i, which may be fixed on the roof of the carriage, with a
draw cord or chain, or other pulling medium, and controlling the same froin the last
or from the first brake carriage.
When the line or chain is drawn in one direction, whether forwards or backwards,
a slacking of the brakes takes place. When the line or chain is let go the friction
wheel a descends on to the friction wheel and the brakes will be immediately and
collectively applied.
For drawing the ends of the line a winding arrangement or a lever and weight
to which the said ends are attached may be provided, and by this means the brakes
bo effectively worked, or when the line is only slightly in tension the brakes
may be only lightly applied, according to the requirements of the case.

page_text: The line is connected to the lovers by the two discs which are placed nearer or
further apart by the crank w and a screw, and acts on such levers by a single
turn.
In the case of it being necessary to remove a brake vehicle from a train the line
or chain is disconnected from the lever i of the said carriage, and the lever pulled
and held in position by the stop-bar or hand lever t, so that the friction wheel a
occupies a raised position.
Having now described and ascertained the nature of the Invention communicated
to me as aforesaid, and in what manner the same is or may be performed,-
I claim as secured to me by the hereinbefore in part recited Letters Patent,-
Firstly. The application of an adjustable conical friction wheel a which can be
set in motion by a bevel pinion p fixed on the axle for operating a railway brake,
substantially as herein before described and shown on the accompanying Sheet of
Drawing.
Secondly. The use of the mechanism for communicating the movement to the
brake blocks, consisting of the bevel wheels with crank, which mechanism pulls the
draw rod in whatever direction the wheel e is turned, substantially as hereinbefore
described and shown on the accompanying Sheet of Drawing.
Thirdly. The use of the mechanism for carrying the draw line over the train to
the brake arrangement, consisting of the lever i which presses the tappets against
the plates y, thus raising the rod land with it the wheel a as soon as the brakes
are slackened out, substantially as herein before described and shown on the accom-
panying Sheet of Drawing.
In witness whereof, I, the said Frederic Carl Glaser, have hereunto set my
hand and seal, this Thirtieth day of September, in the year of our Lord
One thousand eight hundred and seventy ninc.