This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
By HENRY BURICH
After once making and using the ice merry-go-round as illustrated, no pond will be complete unless it has one or more of these devices. To construct an amusement device of this kind, select a good pole that will reach to the bottom of the pond. The measurement can be obtained by cutting a hole in the ice at the desired place and dropping in a line weighted on one end. A sufficient length of the pole should be driven into the bottom of the pond to make it solid and allow the upper end to project above the surface of the ice at least 4 feet.
A turning crosspiece for the upper end of the pole is made as follows: First prepare the end of the pole by sawing it off level, then cutting off the bark and making it round for a metal ring which should be driven on tightly. A pin, about 3/4 in. indiameter, is then driven into a hole bored in the end of the pole. The crosspiece is made of 2 by
6-in. material, at least 18 ft. long. A hole is bored in the center to receive the pin in the pole end.
Ill: Skaters Holding the Rope Ends are Drawn Around in a Circle Rapidly by the Revolving Crosspiece, Turned near the Center by Other Skaters
The crosspiece is easily pushed around the pole and the faster it goes the closer to the center the pushers can travel. Ropes can be tied to the ends of the crosspiece for the skaters to hold on to as they are propelled around in a circle.