clutch: a means for engagement or disengagement of
power.
crossover points: in multiple layer spooling of rope
on a drum, those points of rope contact where the rope
crosses the preceding rope layer.
derrick: an apparatus for lifting or lowering loads
consisting of a mast or equivalent member held at the
head by guys or braces, with or without a boom, for
use with hoists and ropes.
designated person: a person selected or assigned by
the employer or the employer's representative as being
competent to perform specific duties.
drum: the cylindrical member around which rope is
wound for lifting or lowering the load or boom, or
swinging the boom supporting structure.
drum capacity, rope: the length of a specific diameter
of rope which can be wound on a drum.
dynamic loading: loads introduced into the machine
or its components by forces in motion.
exposed: applies to hazardous objects not guarded or
isolated (capable of being contacted inadvertently).
eye splice: an eye formed at the end of a rope by
splicing the dead end into the live end at the base of
the eye.
flange point: a point of contact between rope and
drum flange where the rope changes layers.
gantry: (also known as A-frame) a structural frame,
extending above a base structure, to which boom support
ropes are reeved.
hoist: a power driven drum or drums capable of lifting
and lowering loads.
hoist, direct geared: a hoist with one drum(s) geared
directly to its power source.
hoist, drum: a hoist with hoisting drum(s), and with
or without a swinger (see Fig. 1).
clutch: a means for engagement or disengagement ofpower.crossover points: in multiple layer spooling of ropeon a drum, those points of rope contact where the ropecrosses the preceding rope layer.derrick: an apparatus for lifting or lowering loadsconsisting of a mast or equivalent member held at thehead by guys or braces, with or without a boom, foruse with hoists and ropes.designated person: a person selected or assigned bythe employer or the employer's representative as beingcompetent to perform specific duties.drum: the cylindrical member around which rope iswound for lifting or lowering the load or boom, orswinging the boom supporting structure.drum capacity, rope: the length of a specific diameterof rope which can be wound on a drum.dynamic loading: loads introduced into the machineor its components by forces in motion.exposed: applies to hazardous objects not guarded orisolated (capable of being contacted inadvertently).eye splice: an eye formed at the end of a rope bysplicing the dead end into the live end at the base ofthe eye.flange point: a point of contact between rope anddrum flange where the rope changes layers.gantry: (also known as A-frame) a structural frame,extending above a base structure, to which boom supportropes are reeved.hoist: a power driven drum or drums capable of liftingand lowering loads.hoist, direct geared: a hoist with one drum(s) geareddirectly to its power source.hoist, drum: a hoist with hoisting drum(s), and withor without a swinger (see Fig. 1).
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