Fig. 139.—How the Clockwork Motor is Fastened to the Cigar-box Cover.
(This Box has been cut down to the Proper Length for the Ferris Wheel.)
To Prepare the Clockwork for use, remove it from its case, detach the hands and face, and pry off the small wheel pivoted directly under the hands; this wheel is shown at A in [Fig. 139]. Remove also the balance-wheel B ([Fig. 139]) and the lever C pivoted next to it, to increase the speed of the remaining wheels.
Fasten the clockwork motor for
The Merry-go-round shown in [Fig. 135] to the cover of a cigar box, as illustrated in [Figs. 136] and [139], boring holes through the cover with a gimlet for the pivot ends on the back of the works to set into. Remove the lower flange from a spool (D, [Fig. 139]) and fasten the spool on to the central pivot of the clockwork in the position formerly occupied by wheel A. The hole in the spool will be too large for the pivot and must be filled up with sealing-wax. To do this, hold a piece of sealing-wax above the spool and melt it with a lighted match, allowing it to drip into the hole until the latter is about half full, then press the wax down with the end of a match until it is compact, smooth it off on the bottom of the spool, and make a dent in it with a pencil to indicate the exact center of the hole. Heat the end of the pivot with a lighted match, and press it into the dent in the wax, being careful in doing so to get the spool straight upon the pivot. Cut a hole through the bottom of the cigar box belonging to the cover to which you have attached the works, for spool D to project through ([Fig. 139]).
To Make the Standard for the merry-go-round, cut four strips of wood 8 inches long, and fasten one to each corner of the cigar box, turning the bottom side of the box up; then cut a piece of ½-inch board 10 inches square, locate its center F by drawing diagonal lines from corner to corner as shown in [Fig. 140], bore a 1-inch hole through it at this point for spool D ([Fig. 136]), and then nail the box to the center of the board as shown in [Fig. 140].
The Tent should be laid out upon heavy white paper as shown in [Fig. 141]. After describing a circle with a radius of 9 inches, describe another circle within it with a radius of 7½ inches, this inner circle (shown by dotted lines in the diagram) being drawn for a guide in fastening the tent upon its tent-poles.