To Operate a Toy Jumping-Jack, by supporting the jumping-Jack on a bracket, and connecting its string to the hub of the windmill. You can make your jumping-Jack like the one in [Fig. 110], the details of which are shown in [Fig. 113].
Cut the upright of the bracket (A, [Figs. 14] and [15]) 14 inches long, and the crosspiece (B) 7 inches long. Nail A to B, and nail the jumping-Jack at its center to the end of B ([Fig. 15]). Fasten the triangular block (C) to the lower end of A, and then nail both A and C to the edge of the shaft at a point that will bring the string of the jumping-Jack a trifle beyond the windmill blades.
Fig. 15.—How the Jumping-Jack is Supported.
Fig. 16.—Spool Hub.
Fasten a small stick with a brad driven in one end, in notches cut in the hub's flanges ([Fig. 16]), and connect the brad and Jack's string with a piece of wire or strong string. Then as the windmill revolves it will operate the toy in the manner indicated in [Figs. 14] and [15].