Paul's mature ide
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• AN INNOVATORY des4 for a self-adjusting spanner Iv won Paul Roberts, a matui student at Cleveland College Art & Design, a place in ti regional semi-finals of ti national Toshiba Year of Inve tion competition, administer by the Design Council.
Roberts' spanner uses pot tioned cogs and pins in tl head of the tool, allowing U parallel jaws to contract aut matically to the correct n size, and tighten when turnii force is applied to the handle.
His tutor, Sam Campic says that initially Roberts w involved with analytical still on the way hinges work "wh, he made a James Burke le — the design connection and realised how he could ap ly his understanding to a coi monplace mechanical operati to create something origir and new."
The design means that adjustment is necessary, eith before or after the spanner fastened to the nut, making extremely quick and easy use. The grip of the paral jaws tightens when the ham is turned, ensuring the sparui does not slip on the nut, a only one spanner is needed several sizes of nut.