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HOME-MADE TOYS FOR GIRLS AND BOYS
around them. Fasten the stack to the back of the building with wire straps, and brace the top as shown in Fig. 96, but leave it unattached until you have adjusted
The Overhead Pulleys, or sheaves. These are spools. You will see by looking at Fig. 100 that spool M turns on the axle O, and the ends of this axle are cut to fit snugly in screw-eyes I.
Fig. 97.—Section through Elevator Shaft.
Fasten pulley spool N in the smoke-stack by means of a wooden axle pushed through holes pierced in the side of the stack, as is shown in the small drawing above, Fig. 97. Bore a hole through the back. of the building for the cable cord L to run through (P, Figs. 97 and 100), and cut another through the smoke-stack.
