counterweight system

counterweight system

A permanent, overhead, theater stage rigging system; used to raise or lower scenery or lighting equipment which is counterbalanced by counterweights that ride in vertical tracks at the side of the stage.
References in periodicals archive ?
It completed its work to replace the antiquated hemp-and-sandbag system with a more modern (though still manual) counterweight system in September.
There's so little time between shots in the events of Sport Pistol and Rapid Fire, there's an active counterweight system in the barrel reducing the movement of the gun and limiting recoil.
Dobsonian owners might need some form of counterweight system when swapping these with smaller, lighter eyepieces.
The new model also shares the same counterweight system as the TMS9000E, so owners can interchange counterweights and wing weights from the previous-generation crane, giving them flexibility in configurations across an entire fleet.
It consisted of a steel frame, a suspension harness, and a counterweight system.
Independent, variable-speed winches for the boom and hook provide precise control, and the enhanced counterweight system ensures a low center of gravity for optimum performance.
Later chapters detailing the history of the counterweight system use specific theatre venues to speak to the Torellian stage, counterweight in Europe, and rigging in America.
To simplify set-ups, a counterweight system enables the arm to be used without mountings on any surface.
In this very well-illustrated technical history ranging from ancient Egypt to medieval Europe, weapons expert Nossov describes how those on the inside and outside developed techniques of siege warfare, starting with simple battering rams and ladders, to methods of protection for soldiers attempting to use said battering rams and ladders against a castle armed with large burley men armed with boulders and boiling oil, to the truly fascinating weapons of mass destruction, including the trebuchet, a throwing machine with a counterweight system, the giant crossbow, burrowing machines, early cannon, and even a variety of multi-barreled gun.
boom length, features and options as its predecessor with the exception of the redesigned flexible counterweight system.