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"Two motors are usually employed on each [electric railway] car, and the connection between them and the rails is made through the car-wheels and axles, and between them and the line wire, by a wire connected with a wheel called the <em>trolley.,/i> which is carried at the end of a pole supported on the car roof...." -Atkinson 1903

Electric Railway

"Two motors are usually employed on each [electric railway] car, and the connection between them and…

Truck riggings for a double truck that holds a single trolley car. A truck is the mechanism that consists of the trolley wheels and motors. This type of rigging was used in the early twentieth century. This mechanism allows the trolley to pull an extraordinary amount of weight: between 2,000 and 5,000 pounds. (P) is a lever that is secured to the car body by fulcrum (f) which is stationary. (C, C) are two pieces of metal bent to suit the movements of the trolley car.

Truck Riggings

Truck riggings for a double truck that holds a single trolley car. A truck is the mechanism that consists…

A maximum traction double truck. This type of truck has four wheels, two large and two small. The larger wheels make up seventy percent of the weight of the truck. The motor is hung and geared to the larger wheels. Enough pressure is applied to the large wheels that the smaller wheels are able to stay on the track while going around curves.

Maximum Traction

A maximum traction double truck. This type of truck has four wheels, two large and two small. The larger…

A streetcar which receives its power from overhead electric lines. Also, the name of the pole-like device used to collect and transfer electricity from the overhead lines into the streetcar itself.

Electric Trolley

A streetcar which receives its power from overhead electric lines. Also, the name of the pole-like device…