CLAMP FOR OPTICAL INSTRUMENTS AND THE LIKE

摘要

A clamp for fastening an object to a supporting bar has a body forming a first clamp jaw and carries a swingable arm forming a confronting second clamp jaw; the free end of the arm is bifurcated and engageable by a thumb nut on a bolt also articulated to the body. The pivot of the arm is slidable in an inclined track diverging at a small angle, in the direction toward the body, from the line of force exerted by the engaged thumb nut upon the free end of the arm.