clamps that grip a stand of casing, tubing, drill pipe, or sucker rods so that the stand can be raised or lowered into the hole.
n pl: on rotary rigs and top drive rigs, hinged steel devices with manual operating handles that crew members latch onto a tool joint (or a sub).
A heavy, hinged clamp in the derrick that is attached to the hook and traveling block by bail-like arms. The elevators are used for lifting drill pipe, casing, and tubing and lowering them into the hole. In hoisting a joint of drill pipe, the elevators are latched on to the pipe just below the tool joint (coupling), which prevents the pipe from slipping through the elevators.