Stillson wrenchStill·son wrench
a wrench having a ridged jaw that moves through a collar pivoted loosely to the shaft, used for turning pipes, etc.: the jaw tightens as pressure is applied to the handle
Origin of Stillson wrenchafter Daniel Stillson, its United States inventor (1869)
(plural Stillson wrenches)
- (engineering) pipe wrench
From the American inventor Daniel Chapman Stillson.