IMPROVED TANK LOCOMOTIVE,
DESIGNED BY M. N. FORNEY, 73 BROADWAY, NEW YORK.
Scale, ¹⁄₈ in. = 1 ft.

Plate xvi.
DIMENSIONS, WEIGHT, ETC.,
OF
Double-truck Narrow-gauge Tank Locomotive,
By the Mason Machine Works, Taunton, Mass.

Gauge of Road 3 ft.
Number of Driving-Wheels 4
Number of Front Truck-Wheels 4
Number of Back Truck-Wheels 4
Total Wheel Base 19 ft. 6 in.
Distance between centres of Front and Back Driving-Wheels 5 ft.
Total Weight of Locomotive in working order  
Total Weight on Driving-Wheels 24,000 lbs.
Diameter of Driving-Wheels 2 ft. 9 in.
Diameter of Truck-Wheels 2 ft. 6 in.
Diameter of Cylinders 10 in.
Stroke of Cylinders 1 ft. 3 in.
Outside Diameter of smallest Boiler Ring 3 ft.
Size of Grate 41¹⁄₂ × 31 in.
Number of Tubes 81
Diameter of Tubes 2 in.
Length of Tubes 8 ft. 2 in.
Square Feet of Grate surface 8.93
Square Feet of Heating surface in Fire-Box 56
Square Feet of Heating surface in Tubes 346
Total Feet of Heating surface 402
Exhaust Nozzles—single or double Single.
Diameter of Nozzle 2¹⁄₂ in.
Size of Steam Ports 9¹⁄₂ × 1¹⁄₈ in.
Size of Exhaust Ports 9¹⁄₂ × 2¹⁄₂ in.
Throw of Eccentrics 3³⁄₄ in.
Outside Lap of Valve ³⁄₄ in.
Inside Lap of Valve ¹⁄₁₆ in.
Size of Main Driving-axle Journal 5 × 7 in.
Size of other Driving-axle Journal  
Size of Truck-axle Journal 3¹⁄₂ × 6¹⁄₂ in.
Diameter of Pump Plunger  
Stroke of Pump Plunger  
Capacity of Tank 800 gallons.

Plate XVI.

DOUBLE-TRUCK NARROW-GAUGE TANK LOCOMOTIVE,
BY THE MASON MACHINE WORKS, TAUNTON, MASSACHUSETTS.
Scale, ¹⁄₈ in. = 1 ft.

Plate xvii.
DIMENSIONS, WEIGHT, ETC.,
OF
DOUBLE-TRUCK TANK FREIGHT LOCOMOTIVE,
By the Mason Machine Works, Taunton, Mass.

Gauge of Road 4 ft. 8¹⁄₂ in.
Number of Driving-Wheels 6
Number of Front Truck-Wheels 6
Number of Back Truck-Wheels 6
Total Wheel Base 31 ft.
Distance between centres of Front and Back Driving-Wheels 8 ft.
Total Weight of Locomotive in working order  
Total Weight on Driving-Wheels 66,000 lbs.
Diameter of Driving-Wheels 3 ft. 6 in.
Diameter of Truck-Wheels 2 ft. 6 in.
Diameter of Cylinders 1 ft. 4 in.
Stroke of Cylinders 2 ft.
Outside Diameter of smallest Boiler Ring 4 ft.
Size of Grate 66 × 48³⁄₈ in.
Number of Tubes 154
Diameter of Tubes 2 in.
Length of Tubes 11 ft. 6 in.
Square Feet of Grate surface 22.17
Square Feet of Heating surface in Fire-Box 126
Square Feet of Heating surface in Tubes 927
Total Feet of Heating surface 1053
Exhaust Nozzles—single or double Single.
Diameter of Nozzle Variable.
Size of Steam Ports 15 × 1¹⁄₄ in.
Size of Exhaust Ports 15 × 2³⁄₄ in.
Throw of Eccentrics 8 in.[122]
Outside Lap of Valve ³⁄₄ in.
Inside Lap of Valve ¹⁄₁₆ in.
Size of Main Driving-axle Journal 6¹⁄₂ × 10 in.
Size of other Driving-axle Journal  
Size of Truck-axle Journal 4 × 8 in.
Diameter of Pump Plunger  
Stroke of Pump Plunger  
Capacity of Tank 2,530 gallons.

[122] This engine has Walschaert’s valve gear, which is worked by a crank of 8 inches throw.

Plate XVII.

DOUBLE-TRUCK TANK FREIGHT LOCOMOTIVE,
BY THE MASON MACHINE WORKS, TAUNTON, MASSACHUSETTS.
Scale, ¹⁄₈ in. = 1 ft.

Plate xviii.
DIMENSIONS, WEIGHT, ETC.,
OF
DOUBLE-END LOCOMOTIVE,
By the Grant Locomotive Works, Paterson, N. J.

Gauge of Road 4 ft. 8¹⁄₂ in.
Number of Driving-Wheels 4
Number of Front Truck-Wheels 2
Number of Back Truck-Wheels 2
Total Wheel Base 19 ft. 9 in.
Distance between centres of Front and Back Driving-Wheels 7 ft.
Total Weight of Locomotive in working order 52,000 lbs.
Total Weight on Driving-Wheels 42,000 lbs.
Diameter of Driving-Wheels 56 in.
Diameter of Truck-Wheels 28 in.
Diameter of Cylinders 14 in.
Stroke of Cylinders 22 in.
Outside Diameter of smallest Boiler Ring 42 in.
Size of Grate 73 × 34 in.
Number of Tubes 124
Diameter of Tubes 2 in.
Length of Tubes 7 ft. 10 in.
Square Feet of Grate surface 16.5
Square Feet of Heating surface in Fire-Box 80.8
Square Feet of Heating surface in Tubes 468.5
Total Feet of Heating surface 549.3
Exhaust Nozzles—single or double Double.
Diameter of Nozzle 2¹⁄₂ to 3⁷⁄₈ in.
Size of Steam Ports 14 × 1¹⁄₈ in.
Size of Exhaust Ports 14 × 2¹⁄₄ in.
Throw of Eccentrics 5 in.
Outside Lap of Valve ³⁄₄ in.
Inside Lap of Valve None.
Size of Main Driving-axle Journal 6 dia. × 7³⁄₄ in.
Size of other Driving-axle Journal 6 dia. × 7³⁄₄ in.
Size of Truck-axle Journal 4¹⁄₂ dia. × 8 in.
Diameter of Pump Plunger 3¹⁄₂ in.
Stroke of Pump Plunger 5 in.
Capacity of Tank 1,600 gallons.

Plate XVIII.

DOUBLE-END LOCOMOTIVE,
BY THE GRANT LOCOMOTIVE WORKS, PATERSON, N. J.
Scale, ¹⁄₈ in. = 1 ft.

Plate xix.
DIMENSIONS, WEIGHT, ETC.,
OF
LOCOMOTIVE FOR THE N. Y. ELEVATED R. R.
Designed by D. W. Wyman, Superintendent.

Gauge of Road 4 ft. 10 in.
Number of Driving-Wheels 4
Number of Front Truck-Wheels None.
Number of Back Truck-Wheels None.
Total Wheel Base 5 ft.
Distance between centres of Front and Back Driving-Wheels 5 ft.
Total Weight of Locomotive in working order 8,000 lbs.
Total Weight on Driving-Wheels 8,000 lbs.
Diameter of Driving-Wheels 30 in.
Diameter of Truck-Wheels None.
Diameter of Cylinders 7 in.
Stroke of Cylinders 10 in.
Outside Diameter of smallest Boiler Ring 28 in.
Size of Grate 28 × 28 in.
Number of Tubes 140
Diameter of Tubes 1¹⁄₄ in.
Length of Tubes 3 ft.
Square Feet of Grate surface 5¹⁄₂ ft.
Square Feet of Heating surface in Fire-Box 25 ft.
Square Feet of Heating surface in Tubes 126 ft.
Total Feet of Heating surface 151 ft.
Exhaust Nozzles—single or double Double.
Diameter of Nozzle 2 in.
Size of Steam Ports 6 × ⁵⁄₈ in.
Size of Exhaust Ports 6 × 2 in.
Throw of Eccentrics 2¹⁄₂ in.
Outside Lap of Valve ⁵⁄₈ in.
Inside Lap of Valve ¹⁄₃₂ in.
Diameter of Main Driving-axle Journal 3 in.
Size of other Driving-axle Journal  
Size of Truck-axle Journal  
Diameter of Pump Plunger 1³⁄₈ in.
Stroke of Pump Plunger 10 in.
Capacity of Tank 109 gallons.

Plate XIX.

LOCOMOTIVE FOR THE NEW YORK ELEVATED RAILROAD,
DESIGNED BY D. W. WYMAN, SUPERINTENDENT.
Scale, ¹⁄₈ in. = 1 ft.