IMPROVEMENTS IN TRAMWAY OR OTHER ROAD ENGINES
Year: 1883

page_text: LETTERS PATENT to Ralph Peacock and Hermann Ludwig Lange of Gorton
Foundry Gorton in the County of Lancaster Engineers for an Invention of
"IMPROVEMENTS IN TRAMWAY OR OTHER ROAD ENGINES"
PROVISIONAL SPECIFICATION left by the said Ralph Peacock and
Hermann Ludwig Lange at the Office of the Commissioners of Patents on
the 21st September 1883.
RALPH PEACOCK and HERMANN LUDWIG LANGE of Gorton Foundry Gorton
in the County of Lancaster; Engineers-IMPROVEMENTS IN TRAMWAY OR OTHER
ROAD ENGINES.
Our invention relates to Tramway or other Road engines and the objects of our
invention are first to dispose of the exhaust and waste steam and at the same time
to deaden the beat of the engine, and, secondly to provide an automatic speed
regulator stop and brake valve.
In performing the first part of our invention we place a metal pot on the top of
the vertical boiler over the vertical flue. This pot has an annular chamber and
into this chamber we conduct the exhaust steam from the cylinders, the waste
steam from the safety valves, the exhaust steam from the Brake cylinders and
other waste steam—In this annular chambers, which is heated by the hot gases
from the vertical flue, and from being in close contact with the hot Boiler top on
which it rests, the exhaust and waste steam is dried and heated before it escapes
either into another superheater placed inside the firebox or into the chimney. We
cover the metal pot on the outside with papier machê or some other nonconducting
material to prevent radiation.
We form recesses or corrugations on one of the inner sides of the annular
chamber and projections or ribs on the other inner side of the aunular chamber so
as to bring the exhaust steam in contact with a large amount of heated surface
whilst passing from the inlet to the outlet, and also to break up the exhaust and
thereby soften or deaden the beat of the engine as much as possible.
In performing the second part of our invention we construct an automatic speed
regulator stop and brake valve to fulfil the functions described below.

page_text: This valve is placed between the cylinders and the steam regulator, and shuts
off steam automatically and beyond the control of the driver, when the engine
exceeds a certain rate of speed, which rate of speed can be determined by a
Governor or any other suitable mechanical contrivance. It opens again auto-
matically and without action on the part of the driver as soon as the speed of the
Engine is reduced below the fixed limit
This valve is further arranged to admit steam automatically into the steam brake
cylinders of the Engine and cars (if any) and thus apply the brakes automatically
without the control of the driver.
This valve is also arranged to come into action through an independent drivers
brake valve when it will shut off steam and apply the brakes
This valve is also arranged to open automatically and thus again admit the
steam into the cylinders and release the brakes after the speed of the engine is
reduced or after the driver has shut his brake valve.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Ralph Peacock and Hermann Ludwig Lange in the Patent
Office on the 21st March 1884.
RALPH PEACOCK and HERMANN LUDWIG LANGE, of Gorton Foundry, Gorton,
in the County of Lancaster, Engineers. "IMPROVEMENTS IN TRAMWAY OR OTHER
ROAD ENGINES
"
Our invention relates to tramway or other engines, and the objects of our
Invention are first, to dispose of the exhaust and waste steam and at the same
time to deaden the beat of the engine and secondly to provide an automatic speed
regulator stop and brake valve.
And in order that our Invention may be fully understood and readily carried
into effect we will proceed to describe the accompanying two Sheets of drawings,
reference being had to the figures and letters marked thereon.
On Sheet 1. Fig. 1 is a sectional elevation. Fig. 2 a plan and Fig. 3 an
elevation, partly in section of part of the boiler of an engine to which our
Improvements are applied and on Sheet 2. Figs. 4, 5 and 6 are enlarged views of
our automatic speed regulator stop and brake valve.
We place a metal pot a on the top of the vertical boiler over the vertical flue:
this pot has an annular chamber a' and into this chamber we conduct the exhaust
steam from the cylinders d (through the pipe d') the waste steam from the safety
valves C,
the exhaust steam from the brake cylinders (through the pipe d²) and
other waste steam. In this annular chamber a¹ which is heated by the hot gases
from the vertical flue, and from being in close contact with the hot boiler top on
which it rests, the exhaust and waste steam is dried and heated before it escapes
into another super-heater,-(placed inside the fire-box,)-on its way to the chimney.
We cover the metal pot on the outside with papier maché or some other non-
conducting material to prevent radiation. We form recesses or corrugations (see
Fig. 2) on the inner ring of the annular chamber a³ and projections or ribs on the
inner side of the outer ring of this chamber so as to bring the exhaust steam in
contact with a larger amount of heated surface whilst passing from the inlet to the
outlet, and also to break up the exhaust and thereby soften or deaden the beat of
the engine as much as possible.
In performing the second part of our Invention we construct an automatic speed
regulator, stop and brake valve b to fulfill the functions described below.
This valve is placed between the cylinders and the steam regulator and shuts off
steam automatically and beyond the control of the driver, when the engine exceeds
a certain rate of speed, which rate of speed can be determined by a governor or any
other suitable mechanical contrivance. It opens again automatically and without
action on the part of the driver, as soon as the speed of the engine is reduced below
the fixed limit. This valve is farther arranged to admit steam automatically into
the steam brake cylinders of the engine and cars (if any) and thus apply the brakes
automatically without the control of the driver. This valve is also arranged to
come into action through an independent driver's brake valve f when it will shut
off steam and apply the brakes. This valve is also arranged to open automatically
and thus again admit the steam into the cylinders d and release the brakes after
the speed of the engine is reduced, or after the driver has shut his brake valve f.
Our improved valve is shown on Sheet 2. Figs. 4 and 5 being sectional
elevations of the valve with the passage to the brake cylinder closed, and the
passage to admit steam to the power cylinder open and Fig. 6 being a sectional
elevation of the valve with the passage to the brake cylinder open, and the passage
to the power cylinder closed.

page_text: This valve is placed in the steam pipe between the steam regulator on the boiler
and the cylinders, and steam, to reach the cylinders, passes through the valve
chamber i, lifting the valve j from its seating.
When the engine reaches its maximum speed, a separate valve actuated by the
governor or any other means admits steam through the pipe k and the hole 1, to
the piston m, which is fixed on the same spindle as the valve j, and having a larger
area than the valve j, is enabled to overcome its resistance, and being forced down
by the steam from the pipe k, closes the valve j and shuts off steam from the
cylinders. This downward movement of the piston m, brings a groove n, turned
in the piston spindle opposite the orifice of the steam pipe k, and opens a way for
steam to pass into the pipe leading to the brake cylinder and so set the brake.
The speed of the engine then being checked both by the application of the brake
and the non-admission of steam to the cylinders, the governor valve closes and
prevents farther admission of steam through the pipe k, to the piston m, and the
pressure against the piston beconies reduced by leakage through the small hole o,
until it is overcome by the pressure acting against the valve j, which re-opens,
re-admits steam to the cylinders, and forcing up the piston spindle closes the steam
passage to the brake cylinder and brings a second groove p on the spindle opposite
the openings q which permits the escape of steam from the brake cylinder into the
hot-pot a on the boiler, or the ash pan or any other convenient place and releases
the brake
Having stated the nature of our Invention and described the manner of
performing the same
We declare that we claim
1. The pot a, substantially as and for the purposes herein shown and described.
2. The improved automatic speed regulator stop and brake valve, substantially
as and for the purposes herein specified and as shown on Sheet 2 of the annexed
drawings.
In witness whereof I the said Hermann Ludwig Lange for myself and on behalf
of the said Ralph Peacock have hereunto set my hand and seal this nineteenth
day of March in the year of Our Lord One thousand eight hundred and eighty
four.