This section is from the book "The Tinman's Manual And Builder's And Mechanic's Handbook", by Isaac Ridler Butt. Also available from Amazon: The Tinman's Manual And Builder's And Mechanic's Handbook.
Weight suspended, tons X Projection, feet/Height of post above ground=
Strain on top of post, tons.
The post can then be calculated as a beam, twice as long as this height from ground, with twice the weight on the middle. [See Beams.]
that of piston.
To find the proper size, under any circumstances, capable of supplying twice the quantity ordinarily used for injection.
Cub. ft. water per hour used in cylinder in form of steam /Stroke of pump, ft x strokes per minute
= Area of pump in square feet.
Case should be strong and heavy. Bearings long. Blades and arms as light and well balanced as possible. Good proportions -
Inlet = ½ diameter of fan,
Blades = ¼ diameter of fan each way,
Outlet = area of blades.
The area of tuyeres is most advantageous when made area of blades density of blast, oz. per sq. inch, and it should not exceed double this size.