Abstract: A rotary file having an outer fixed cabinet and an inner cabinet rotatable on a vertical axis includes a locking mechanism comprised of a pair of simultaneously movable stops that can interfere with rotation of the inner cabinet in either direction. The stops are spaced from each other and are hinge-mounted to a fixed base of the outer cabinet so that they can be raised up to an interfering position with any one of the four sides of a square base member of the inner rotatable cabinet. One stop precludes rotation of the inner cabinet in a clockwise direction, while the other stop precludes rotation of the inner cabinet in a counterclockwise direction. An elongated bell crank member, rotatable on a horizontal axis by means of a user-activated locking handle, is connected to the hinge-mounted stops by a pair of vertically extending parallel links, movement of the bell crank member causing concurrent movement of the stops between their interfering and non-interfering positions.

Abstract: A method and apparatus for post forming laminate tops. A top substrate and its overhanging laminate are mounted on a pivotable supporting table. When the table is in a first position, the overhanging laminate is adjacent a heater of generally C-shaped cross section. The heater can be pivoted into a position embracing the overhanging portion of the laminate. The laminate is very rapidly heated to a temperature of approximately 335.degree. to 365.degree.F., preferably within a period of about from 12 to 16 seconds. The ambient heater temperature is roughly from 550.degree. to 750.degree.F. As soon as the laminate has been heated, the heater pivots out of position. The table pivots upwardly, thereby wiping the overhanging laminate past the bottom edge of a former. The former then moves forwardly and, due to a generally C-shaped cross section, firmly clamps the overhanging laminate around the periphery of the substrate. After cooling, the former is retracted and the post formed top can be removed.