Abstract: The disclosed machine comprises holding means for holding a drill or other similar tool to be ground, first and second drive means for producing translatory movement of the holding means along rectangularly related directions, third drive means for producing the rotation of the holding means, a plurality of grinding units including grinding motors and wheels for grinding the tool, respective additional drive means for causing feeding movement of the grinding motors to bring the wheels into grinding engagement with the tool, swivel means for swiveling the holding means to present the tool to the respective grinding units, a keyboard for entering numerical dimensional values and parameters for controlling the drive means, a TV tube for displaying the values and parameters, a memory for storing the values and parameters, means for bringing up a series of questionnaire pages on the TV tube to prompt the operator to enter all of the dimensional values and parameters to program the machine, the questionnaires havin

Abstract: A grinding machine with a high production rate for pre-pointing drill bodies and the like in automatic duty cycles wherein separate grinding heads and a chuck head are respectively shiftable to and from a working position to grind both ends of the drill body simultaneously. The chuck head includes a special through-feeding rotary chuck which is journalled at its periphery and through which the work pieces are loaded and unloaded sequentially and unidirectionally by a fast-acting loading plunger advancing rapidly in an initial portion of its loading stroke, with completion at a slowed rate for accurate lodgement of the drill bodies with both ends precisely positioned for engagement by the grinding wheels.

Abstract: An automatic grinding machine adapted to cut and relieve spiral drill flutes and perform analogous form-relieving operations requiring helical advance of the work, wherein a linearly-moving carriage travels a rotary spindle and its work chuck relative to a grinding wheel in programmed duty cycles under control of logic circuitry with optional manual override control. Separate electric motors for the carriage and spindle are activated at adjustable speed ratios by digitally set binary drive pulses enabling instant change of helix angle or lead ratios and other working parameters by adjustment of digital switches at a simple control panel. A reversible tool head affords automatic cross-cutting capabilities; and a system of pulse-controlled indexing of the work is provided to increase the production rate of the machine by a method which effects the indexing as a function of the otherwise idle return travel of the carriage for restarting in successive work excursions.

Abstract: A hopper payout for various coin denominations is disclosed having a hopper, a rotary pin wheel, removably secured shelf wheel, and delivery opening in which the pin wheel is suspended for rotation by means of rollers oriented at the periphery of the wheel on spaced centers. The shelf wheel is removable and replaceable with differing diameter shelf wheels to accommodate varying denominations of coins. A centrally disposed agitator is similarly removable and interchangeable. The knife which removes coins from the shelf wheel is pivotally mounted to accommodate varying diameters of the varying coin dimensions. A uniformly widening coin gutter is provided to reduce the tendency of the coins to jam and shingle, irrespective of denomination and size.

Abstract: A hopper payout for various coin denominations is disclosed having a hopper, a rotary pin wheel, removably secured shelf wheel, and delivery opening in which the pin wheel is suspended for rotation by means of rollers oriented at the periphery of the wheel on spaced centers. The shelf wheel is removable and replaceable with differing diameter shelf wheels to accommodate varying denominations of coins. A centrally disposed agitator is similarly removable and interchangeable. The knife which removes coins from the shelf wheel is pivotally mounted to accommodate varying diameters of the varying coin dimensions. A uniformly widening coin gutter is provided to reduce the tendency of the coins to jam and shingle, irrespective of denomination and size.