Chapter XCV: 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.