Davenport  
Fixed Frame Geared Steam Locomotives

Geared Steam Locomotive Works

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  Davenport Main


    Fixed Frame Rod / Gear Hybrid
with gear case cutaway  

Images

Components

Roster

The fixed frame models were similar to a small conventional tank type rod locomotive in outward appearance. 

Similar to a  rod locomotive:

Unlike a rod locomotive, the locomotives utilized gearing to >"pull a third more tonnage than a direct drive locomotive of the same weight".280d 


Models:

Two basic models were built, 4 driver and  6 driver.  A study of the roster and available images seems to reveal that most were tank type locomotives.  The variations offered within each model are detailed in the tables below as transcribed from a company marketing brochure:

4 Driver Models Available - 5 to 25 Tons:

Code Word Cylinder
Inches
Driv-
ing
Wheels
Dia.
Inches

Wheel Base
 Ft-In.

Water Capa-
city Gal.

Coal
Cap.
Lbs.
Rad.
Sharp
Curve
Ft.
Wt.
Lig't
Rail
Weight
Engine
Working
Order
Boiler
Press
Lbs.
Tractive
Effort
Lbs.
Haulage Capacity (tons)
24"
ga
36"
ga
% 1% 2% 3% 4% 5% 6% 7% 8%
Doorn 5 x 8 24 2-9 75 150 150 18 12 10500 160 3000 145 95 55 37 28 22 18 15 12
Doozen 6 x 8 24 3-0 95 175 250 20 16 15000 160 4250 203 132 76 52 39 30 24 20 17
Dorade 7 x10 24 3-9 130 240 400 25 20 19000 160 5120 246 160 92 62 47 36 29 24 20
Dorella 8 x 12 32 4-3 130 240 500 27 25 26000 170 7400 357 203 135 92 69 54 44 36 30
Dorsal 9 x14 32 4-9 140 260 600 32 30 36000 170 10500 507 332 192 132 98 77 62 52 43
Dortour 11x14 32 4-9 150 280 750 32 40 50000 170 14900 720 471 273 187 140 111 90 74 63

 

6 Driver Models Available - 7 to 30 Tons:

Code Word Cylinder
Inches
Driv-
ing
Wheels
Dia.
Inches

Wheel Base
 Ft-In.

Water Capa-
city Gal.

Coal
Cap.
Lbs.
Rad.
Sharp
Curve
Ft.
Wt.
Lig't
Rail
Weight
Engine
Working
Order
Boiler
Press
Lbs.
Tractive
Effort
Lbs.
Haulage Capacity (tons)
24"
ga
36"
ga
% 1% 2% 3% 4% 5% 6% 7% 8%
Drilo 6x8 24 4-9 95 175 300 32 12 14500 160 4225 203 132 76 52 39 30 24 20 17
Drock 7 x 10 24 4-9 130 240 500 32 16 18000 160 5120 246 160 92 62 47 36 29 24 20
Dronte 8 x10 24 4-9 130 240 600 32 16 22000 160 6700 324 212 123 84 63 50 40 33 28
Druck 9 x12 32 6-6 140 260 750 60 20 30000 170 8300 400 261 151 103 77 60 48 40 33
Dryade 10 x14 32 7-0 140 260 1000 80 25 42000 170 11600 559 365 211 144 107 84 68 56 34
Dryope 11x14 32 7-0 150 280 1000 80 30 60000 170 16300 786 514 297 203 152 119 96 76 65

"The hauling capacities are based on a frictional resistance of 10 pounds per ton for the cars where the track is in good condition"

 

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Page changed: December 13, 2012 07:20:38 PM