Abstract: A hand blender with a built-in 2-speed gearbox, having its output shaft rotating clockwise whenever the motor rotates clockwise or anticlockwise. By using a differential transmission assembly and a one-way bearing, two different output speeds are realized. Thus, different types of food can be processed with different stirring speeds, and a single type of food can be processed with different stirring speeds in different mixing stages of a stirring process.

Abstract: The invention consists of a process for the control of the motorized feed drive for the movable workplace table of a machine tool, in particular the rolling carriage of a circular saw. The manual force that is applied by the operator in direction of the feed is sensed and converted to a corresponding measured value. From this a set value for the feed rate of the rolling carriage is created and from that is derived a control signal for the drive.

Abstract: A machine tool feed system of the type in which a tool supporting sliding carriage is moved toward and away from a workpiece which includes a mechanism for moving the carriage initially in a smoothly accelerated-decelerated rapid advance stroke toward the work and further moving the carriage in the same direction through a predetermined work stroke in a slower feed motion while the tool operates on the work. The mechanism thereafter retracts the tool carriage away from the work in a smoothly accelerated-decelerated rapid return stroke equal in distance to the feed stroke added to the rapid advance stroke. Mechanisms are provided for a first drive for the rapid advance stroke and a second drive for the work stroke, with interconnection with the tool carriage which unlock a portion of the first drive mechanism while initiating the second drive for the work stroke, and regenerating or relocking the interconnectionn during the composite rapid return stroke.

Abstract: The cutting force applied between the cutting tool and the workpiece of a machine tool is periodically pulsated to expedite removal of material from the workpiece. The periodic cutting force pulsation is produced by periodically varying the spindle speed or the feed rate or both. In one embodiment, the periodic speed variation is produced by universal joints in the spindle drive and worktable drive. In a second embodiment, the periodic speed variation is produced by elliptical gears in the spindle drive and worktable drive.