Geiser Manufacturing Company 0-6-0 "Switcher" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 10784)

Data from Baldwin Locomotive Works, Record of Recent Construction ((1903), No. 35, p. 196-197 and DeGolyer, Volume 24, p. 266. Works number was 20297. See the Geisler site at [], last accessed 21 August 2009.

Geiser Manufacturing was formed in 1869 out of earlier companies that built farm machinery. At the time this tank engine was produced, Geiser occupied two large plants in Waynesboro, PA. Although operating on the standard gauge on 50-80 lb/yard (25-40 kg/m) rail, this was a tiny engine that nevertheless had to scale grades of 90 to 110 feet per mile (1.7 to 2%) and negotiate curves as tight as 100 feet radius. Some of the curves could present 45 degrees of radius on a 1/7" grade. This may explain the relatively large firebox and certainly justifies the 5 to 1 factor of adhesion.

Purchased by Emerson-Brantingham in 1912, Geiser was later sold again to a consortium based in Waynesboro in 1925, but by 1939 the company was bankrupt and all of its assets up for sale. The entire manufacturing plant went up in flames in 1940, the glow of which could be seen for 40 miles.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID10784
RailroadGeiser Manufacturing Company
Number in Class1
Road Numbers3
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.75 / 2.67
Engine Wheelbase (ft / m) 8.75 / 2.67
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 8.75 / 2.67
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)60,000 / 27,216
Engine Weight (lbs / kg)60,000 / 27,216
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)60,000
Tender Water Capacity (gals / ML)600 / 2.27
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)33 / 16.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)13" x 22" / 330x559
Tractive Effort (lbs / kg)12,039 / 5460.81
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.98
Heating Ability
Tubes (number - dia) (in / mm)90 - 1.75" / 44
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.62 / 2.93
Firebox Area (sq ft / m2)52.83 / 4.91
Grate Area (sq ft / m2)13.95 / 1.30
Evaporative Heating Surface (sq ft / m2)445 / 41.36
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)445 / 41.36
Evaporative Heating Surface/Cylinder Volume131.66
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2232
Same as above plus superheater percentage2232
Same as above but substitute firebox area for grate area8453
Power L12350
Power MT259.04

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