Dual string elevators

Claim 1

A dual string elevator comprising a body having a single pair of tapered bowls extending vertically through its central portion, said body having a pair of actuator recesses, gripping slips for each bowl, an actuator for each set of gripping slips, one of said actuators being positioned within each of said recesses, means connecting each actuator to its set of gripping slips whereby when each actuator is actuated in one direction, its gripping slips are moved out of engagement with said bowl, and when said actuator is actuated in the other direction, its slips are moved into a pipe gripping position within said bowl, brackets on said body, said connecting means including a link pivotally connected at its central portion to its respective actuator, said link being pivotally connected at its outer end to one of said brackets and at its inner end to its gripping slips, and a pair of lifting projections extending outward from said body in a position aligned with a plane passing through the axes of said bowls, whereby the load of supporting a single string in one of said bowls does not introduce a bending load on said string.