700 THINGS FOR BOYS TO DO

HOW TO CONSTRUCT

WIRELESS OUTFITS, BOATS, CAMP EQUIPMENT,
AERIAL GLIDERS, KITES, SELF-PROPELLED VEHICLES
ENGINES, MOTORS, ELECTRICAL APPARATUS, CAMERAS
AND
HUNDREDS OF OTHER THINGS WHICH DELIGHT EVERY BOY

WITH 800 ILLUSTRATIONS

COPYRIGHTED, 1913, BY H. H. WINDSOR CHICAGO
POPULAR MECHANICS CO.
PUBLISHERS



** A Model Steam Engine [1]

The accompanying sketch illustrates a two-cylinder single-acting,
poppet valve steam engine of home construction.

The entire engine, excepting the flywheel, shaft, valve cams,
pistons and bracing rods connecting the upper and lower plates of
the frame proper, is of brass, the other parts named being of cast
iron and bar steel.

The cylinders, G, are of seamless brass tubing, 1-1/2 in. outside