Assertion: hoist's trolley | /r/CapableOf | run along beam
Facets:
value: to allow
type: PURPOSE
Source sentences:
text: A hoist can be mounted to a trolley running along a beam or a rail, giving you the ability
text: A gantry hoist is a hoist design with a trolley that moves along a beam to allow the operator to lift objects vertically and shift them horizontally in space as needed.