| http://www.w3.org/ns/prov#value | - During this movement, the weight of the elevator tends to cause the elevatorto hang vertically by the trunions 58 as indicated in FIG. 1B. The elevator may be manually pivoted about the trunions 58 into the operative position shown in FIG. 1C as required to engage a pipe or other equipment which is non-vertically oriented.
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