Work supporting device

A work supporting device comprising a base;

• a support member mounted in and rotatable relative to said base about a first axis, a carrier member having a slot and mounted in and rotatable relative to said support member about a second axis which is inclined relative to said first axis, one of said members having a concave surface and the other of said members having a convex surface complementary to and adjacent said concave surface, said surfaces having centers of curvature on or close to said second axis;
• means for releasably clamping said support member to said base and for releasably clamping said surfaces to each other to thus prevent rotation of said members relative to each other and relative to said base, comprising a link rotatable about said second axis and extending from said carrier member by way of said slot, said link being received in said slot with clearance;
• a shroud movably mounted on said carrier member and overlying said clearance;
• and means for actuating said clamping means.

A work supporting device comprising a base;

• a support member mounted in and rotatable relative to said base about a substantially vertical first axis;
• a carrier member mounted in and rotatable relative to said support member about a substantially horizontal second axis which crosses in space with said first axis, one of said members having a concave surface and the other of said members having a convex surface complementary to and adjacent said concave surface, said surfaces having centers of curvature on or close to said second axis;
• means for releasably clamping said support member to said base and for releasably clamping said surfaces to each other to thus prevent rotation of said members relative to each other and relative to said base;
• and means for actuating said clamping means including an eccentric and means for rotating said eccentric about a substantially horizontal third axis which extends at right angles to said second axis.