SHAY GEARED LOCOMOTIVES
THE designs illustrated and described
in this catalogue comprise our standard Shay Geared Locomotives. These fulfill
all the requirements of ordinary industrial and logging operations. To meet
special conditions, our engineers will be glad to co-operate with customers
in the production of designs to meet their special requirements. Our engineering
department is ready at all times to furnish information, and to advise as to
the most satisfactory designs for particular conditions.
Shay Geared Locomotives operate
successfully under extraordinary conditions of track and grade. These engines
are built in sizes ranging from 13 tons up to any size to meet customers' requirements.
From 20 tons up, the locomotive is constructed with three cylinders. This gives
a constant torque and produces an even and powerful exhaust. This last feature
makes the engine steam freely.
The boilers are carefully designed,
and provided with large steam spaces, so that they will operate satisfactorily
on steep grades.
The frames are made of Standard
I-beam sections, or of the girder type. The trucks are solidly built, and thoroughly
braced. All wheels are driving wheels, and the total weight of both engine
and tender is used to pull the load. Therefore, a Shay Locomotive of the same
weight as a direct locomotive and its tender will produce a much greater draw-bar
Due to the fact that there is no
counterbalance in the driving wheels, there is a total absence of dynamic augment,
or what is commonly known as "hammerblow" on the rail. Because
of this, the Shay Geared Locomotive operates on track too light for a direct
engine of the same axle load. It is easy on the track and reduces very materially
the cost of repairs and upkeep.
As shown by the accompanying illustrations,
the wheels are driven by means of gears connected on the driving crank shaft,
which is applied to the right side of the engine. To compensate for curves the
driving shafts-are of an ingenious design provided with universal couplings
and slip joints. The whole construction accommodates itself very freely to
curves and uneven track.
Another particularly desirable feature of the Shay, when operating on bad
track, is the ease with which it can be replaced upon the rails. For ordinary
derailment, when only one truck is off, the engine can be easily and quickly
put back upon the track by its own power and the use of common wrecking frogs.
It is unusual to require the assistance of another engine to help a Shay on
to the track after derailment.
It has been demonstrated that a
Shay Locomotive is so simple in construction and easy to operate that any man
who has had experience in stationary plant work can learn very quickly to become
a competent Shay engineer.
SERVICE FOR WHICH THE SHAY IS
The Shay Geared Locomotive has a wide and varied range of service, being
used in industrial, quarry, contractors, logging, mining and plantation work,
also on branch lines and mountain sections of trunk-line railways.
It is especially adapted to industrial
railroads in and around large manufacturing plants. Its value as a switching
engine is due to the rapidity with which it will accelerate a load and to its
ability to spot cars at given points in a minimum of time. It is designed to
take any curve on which standard cars can be operated.
For use on heavy grades, sharp curves and light rails, it is particularly desirable.
The large number of exhausts at slow speeds produces a steady draft. This gives
the Shay Locomotive excellent steaming qualities and tends to reduce the consumption
of fuel to a minimum.
The Shay Locomotive has the greatest
hauling capacity, in comparison with its weight, of any locomotive.
It is the most economical and efficient
heavy duty locomotive so far produced for the classes of service above designated.
Shay's at Work
Ton Shay at Portland Cement Company
Sixty Ton Shay at Morgan & Wright Plant, Detroit,
On the Roughest Track
On the Sharpest Curve
Seventy Ton Shay Hauling Train Load of Logs on 12%
Switch Back, Loop Creek Branch C&O, 4½%
Grade, 150-Ton Shay Pushing
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