Worm and Worm Wheel
An all metallic self
contained apparatus useful for demonstrating the efficiency for worm and wheel
and also the principle of work. Consisting of a machine cut worm gear of 25 cm
diameter, carrying a meta l drum of 12 cm diameter, and machine cut worm on
steel spindle carrying a 12 cm diameter pulley. The whole arrangement is fixed
on heavy cast iron bracket capable to be fixed to wall. Complete With effort
pulley, string and hooks but without weights.
a. Single
b. Double
c. Triple