Abstract: A method by which a generally elongate right cylindrically-shaped part is precisely machined and shaped includes the steps of drawing a disc blank into a cup-shaped blank, subsequently drawing the cup-shaped blank a successive number of times to form a generally elongate right cylindrically-shaped part having a finish diameter and a finish length, cutting the generally right cylindrically-shaped part to create a desired edge configuration and to establish a finish diameter for the part, and working the sidewall of the right cylindrically-shaped part to create a desired pattern therein, such that the part produced may be used, for example, as the base shell for the swivel in a lipstick case.

Abstract: A work platform frame is connected to a vertically disposed pin fixed to one end of a boom. An idler bracket is also pivotally mounted on the pin and has outwardly extending first and second idler arms, which are offset, with respect to each other, by between 90.degree. and 120.degree.. A first hydraulic assembly is connected between the first idler arm and the work platform frame. A second hydraulic assembly is connected between the second idler arm and the boom. Hydraulic fluid is selectively applied to the first and second hydraulic assemblies to cause rotation of the work platform about the pin through an arc of 180.degree., each hydraulic assembly and its associated idler arm accounting for 90.degree. of such rotation.

Abstract: A self-propelled rotatable hydraulic lift having a body with an extensible boom pivotally attached to the upper rear portion of a counterweight and terminating in a self-leveling workman's platform. Remote lift controls are provided at the platform by means of control lines contained in flexible conduits within the boom. The center of gravity of the counterweight is located between the pivotal connection of the boom and the axis of rotation of the boom to provide both improved stability with respect to back tipping when the boom is extended vertically and a smaller rotational diameter for the lift body.

Abstract: A self-propelled rotatable hydraulic lift having a body with an extensible boom pivotally attached to the upper rear portion of a counterweight and terminating in a self-leveling workman's platform. Remote lift controls are provided at the platform by means of control lines contained in flexible conduits within the boom. The center of gravity of the counterweight is located between the pivotal connection of the boom and the axis of rotation of the boom to provide both improved stability with respect to back tipping when the boom is extended vertically and a smaller rotational diameter for the lift body.