Abstract: A ratchet jack stand assembly intended for supporting a raised load is formed entirely of stamped steel components and is free of any spring-biased members. The assembly includes a base, a housing welded to the base, an elongated post slideably supported by the housing in an upright position, and a gravity-biased handle pivotally mounted on the housing. A plurality of inclined, longitudinally spaced notches are formed in the post and a saddle is welded to its upper end. A pair of inclined, horizontally spaced and aligned slots are formed in the housing. The gravity-biased handle has spaced upper and lower pins attached thereto, and is pivotally mounted on the housing by the lower pin.

Abstract: An apparatus for bending single or multiple stacked flat sections of finned heat exchanger coil into a predetermined configuration having one, two or three generally 90 degree bends. The coil is moved along a support table to a bending station by a gripper mechanism engaged with the rear end of the coil. A portion of the coil forward of the position to be bent is clamped against an anvil by a clamping pad. A hold-down assembly prevents another portion of the coil rearward of the bend portion from raising off the support table as the anvil and clamping pad are rotated by a supporting spindle to bend the coil to the desired angle. The gripper mechanism is accelerated linearly forwardly in coordinated movement with the rotational acceleration of the spindle to prevent distortion of the coil fins by crowding material into the bend. The gripper mechanism is moved linearly along the support table by a controlled ball screw drive mechanism.