Section 3.—BELT GEARING.
(See also [p. 12].)
[1956]. Fast and loose pulleys; the fast pulley is larger in diameter than the loose pulley, to allow the belt to run slack when running idle.
[1957]. Round rubber belt gear.
[1958]. Device for tightening a belt; two guide pulleys are run on studs fixed to a locking lever, the pull of the belt rocks this lever as far as the slack of belt will allow, thus keeping the belt tight.
[1959]. Wide belt pulleys, cast with a double set of arms (shown in section).
[1960]. Belt drive for two pulleys.
Vee belts are used to run over V grooved pulleys. See [No. 1243].
Link belts; formed of leather links connected by steel wire centres in the form of a wide pitched chain (as [No. 196]).
Cord belts are formed of guttapercha, indiarubber, leather, raw hide or catgut.
Raw hide is frequently used for belts; it is stronger than leather, harder in substance and less porous.