Clamping and holding device

A clamping device comprising a main body including a barrel and a first clamping arm extending laterally in one direction from a first end of said barrel;

• a second clamping arm pivotally mounted at a second end of said barrel and adapted to cooperate with the first clamping arm to engage an article upon which the clamping device is to be mounted;
• a holder extending laterally from said first end of said barrel in a direction other than said one direction;
• means for mounting said holder on said barrel to provide a position permitting pivotal movement with respect to the barrel and a position in which the holder is loced with respect to the barrel, spring means within the barrel acting to bias the mounting means to a locked position while permitting movement of the mounting means to the position permitting pivotal movement, said mounting means is telescopically received in a recess in the barrel and has a conically shaped surface with its narrow diameter close to the holder;
• a cam follower at said other end of the barrel and a cam on the second clamping arm to cooperate with the cam follower to bias the second clamping arm to closed position.