Dunkirk / Gilbert Geared Components
Geared Steam Locomotive Works ©
"V" arrangement - Class "B"
Drivers - Flanges
Two types of flanges were utilized: Double and Single.
The concave shaped metal wheels had flanges on both the outside and inside of the wheel itself. They were used on temporary logging "rail" roads where the rail consisted of two rows of full length tree logs (with the limbs removed) laid end to end for the entire lengh of the railroad. The concave wheels "straddled" and thus rode atop the logs, following the direction in which they were laid.
Single Flange - Smooth Tire
The single flanged wheels were the type most often associated with locomotive wheels or drivers. They were metal wheels with a flange or lip an inch or more deep that ran along the inside (toward the axle) of the wheel. They were used on the metal rails most commonly associated with railroads. The flange forced the wheel to follow the curvature or straightness of the track while also preventing the wheel from "riding" up and jumping over the top of the rail. Smooth tires were utilized where the rail was steel.
Drivers - Tires
The part of the driver that actually rode atop the rail was the "tire". Two styles were utilized: Smooth and Cleated.
The smooth tires were utilized where the rail was metal. This style was the more prevalent of the two.
The metal cleated wheels were designed for temporary logging "rail" roads
where the "rail" was long square lengths of wood positioned end to end and
usually nailed to a stable surface such as logs laid end to end. The cleates
provided good traction, but was destructive on the wooden rail.
Drivers - Wheels
With one known exception, the wheels on the trucks were spoked. The exception were the solid wheels installed on the Aberdeen & Hazen engine. Wheel counter balances on the wheels were not utilized.
|Patent drawing showing differential arrangement of truck axle gears used in the Gilbert type locomotives.||Photo of same arrangement as noted at left.|
Page changed: Monday August 01, 2005 09:21:20 PM