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SHAY GEARED LOCOMOTIVES

GENERAL DESIGN

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 pull.

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 ADAPTED
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

Fifty Ton Shay at Portland Cement Company
Sixty Ton Shay at Morgan & Wright Plant, Detroit, Mich.
On the Roughest Track
On the Sharpest Curve
Seventy Ton Shay Hauling Train Load of Logs on 12% Grade
Switch Back, Loop Creek Branch C&O, 4½% Grade, 150-Ton Shay Pushing


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