Hanging-Bars.
Next take a lath or stick of some kind, which is of such length that it will rest securely when laid across from side to side of the bath-tub. To this stick tack two others, as shown in Fig. 144.
These hanging-bars must be long enough to allow the water-wheel to be suspended just below the faucet of the bath-tub. Strengthen your hanging-bars (Fig. 144) by two diagonal pieces.
Fig. 145 shows how to cut a notch near the lower end of one hanging-bar, and a hole is bored near the end of the opposite hanging-bar.
Figs. 144 and 145.
To adjust the wheel, place the top bar across the bath-tub and then slip the shaft in the hole in the hanging-bar, sliding the other end of the shaft into the slot shown in Fig. 145.
Figs. 146-149.
If the water is now allowed to run slowly from the faucet and fall upon the inside paddles it will set the wheel in motion, and this motion can be transmitted to any small and simple piece of machinery by means of a belt running from the spool which is attached to the wheel to a similar spool, attached to the machine.
The Circus Performers.