Abstract: A turning device including a moving member movable along a linear path, and a turning member which is pivotable through an angle of 90 degrees about an axis perpendicular to the linear path during movement of the turning member along the linear path. A first and a second cam follower are provided on respective first and second surfaces of the turning member. A first cam provided on the second surface of the turning member has a first straight cam surface inclined to the linear path and engageable with the first cam follower, while a second cam spaced apart from the first cam in a direction parallel to the axis of of the turning member has a second straight cam surface engageable with the second cam follower. The second cam surface is inclined to the linear path such that the second cam follower is moved perpendicularly to the linear path in the same direction as the first cam follower as the moving member is moved.