Clamping devices
AssigneeMicroform Communications Limited
InventorKeith B. Lithgow
Life of this patent
Estimating the term…
Abstract
A clamping device for clamping to a parallel sided support, e.g. a desk top or shelf comprises an elongate base on which is rigidly mounted a first arm. A second arm is slidable on the base and carries a screw which engages the rear face of the base to define a pivot axis. A second screw is manually rotatable to engage the base and pivot the arm about the pivot axis until the edge of the face plate engages the base to lock the arm in position. By suitable pre-setting of the screw the arm locks when the face plates are parallel. The clamping device may be used to support a microfilm projector.
Claims4
A clamping device, comprising
- (a) a first clamp member (2) including
- (1) an elongate base (4) having smooth parallel sides;
- and
- (2) a first clamp arm (5) extending laterally outwardly from the base;
- (b) a second clamp member (3) mounted for sliding movement along said base, said second clamp member including
- (1) a second clamp arm (16) extending laterally outwardly from said base opposite and generally parallel with said first clamp arm;
- and
- (2) pivot means (19) on said second clamp member for engaging the side surface of said base which is remote from said first and second clamp arms, thereby to define a pivot axis about which said second clamp arm is pivotable relative to said base;
- (c) force applying means arranged on said second clamp member for engaging said first clamp member at a position spaced from said pivot axis, thereby to pivot said second clamp member about said pivot axis in a first direction causing displacement of said second clamp arm toward said first clamp arm;
- and
- (d) stop means (17) arranged on said second clamp member for engagement with said base member to limit rotation of said second clamp member in said first direction, whereby upon displacement of said second clamp member to any desired position relative to said base member, said force applying means may be operated to pivot said second clamp member in said first direction about said pivot axis and thereby displace said stop means toward locking engagement with said base member.
Dependencies are inferred from the claim text.