A tool suspender (100) comprising: a first plate (200); a second plate (300); a gripping assembly (400) between the first plate (200) and the second plate (300) and comprising first and second jaws (410, 430) supported by the first and second plates (200, 300), the first jaw (410) movable between a first closed position and a first open position and the second jaw (430) moveable between a second closed position and a second open position; and a locking assembly (500) having a locked configuration in which the locking assembly (500) prevents the first and second jaws (410, 430) from moving from their closed positions to their open positions and an unlocked configuration in which the locking assembly (500) does not prevent the first and second jaws (410, 430) from moving from their closed positions to their open positions.

A tool positioner for a chipping or drilling tool having a tool axis. The positioner has a frame, a tool support configured for coupling the chipping or drilling tool to the positioner and mounted to the frame via a first joint having a first pivot axis and a second joint having a second pivot axis, the first pivot axis, the second pivot axis and the tool axis intersecting each other at a common point. The first joint and the second joint allow angular movements of the chipping or drilling tool at least about the respective first pivot axis and the second pivot axis. The tool support is further displaceable relative to the frame to enable a plurality of degrees of freedom in translation of the tool support. An automated locking system is operable to restrict and allow the plurality of degrees of freedom in translation of the tool support.