Abstract: A master gear for measuring, in a parallel axis gear measuring apparatus, tooth profile, tooth pitch, and tooth thickness of a work gear. The master gear has a plurality of adjacent teeth separated by a tooth spacing that varies as a repeatable sequence of spacings, wherein the master gear contacts only a single tooth of the work gear during measurement of work gear tooth profile and tooth thickness. The master gear contacts only two teeth of the work gear during a transition between measurement of tooth profile of individual teeth of the work gear, wherein tooth pitch is measured during the transition. The master gear also has transverse operating pressure angle dependent on a transverse pressure angle at an outer diameter of the work gear, a transverse pressure angle at a form diameter of the work gear, a transverse pressure angle at a pitch diameter of the work gear, a transverse tooth thickness at a pitch diameter of the work gear, and a pitch diameter of the work gear.

Abstract: An actuator for selectively coupling a pallet with a complementary pallet base. A pair of multitoothed rings to couple the pallet with a pallet base. A co-axial piston and cam for driving the multitoothed rings together or apart. A force driving source for selectively activating the piston and cam.

Abstract: A method and apparatus for checking toothed articles such as splines. A spline is rotatably supported in a cradle, and a pair of discs, one of which is axially moveable, the other of which is axially fixed, are brought into engagement with generally parallel and oppositely directed teeth of the spline. The discs are of the same hand and are rotated in unison causing rotation of the spline in the cradle. Relative movement of the discs is monitored to provide a succession of span measurements in order to provide information which can be used to sort splines according to their deviation from designed dimensions.

Abstract: An apparatus for applying optical energy to selectively remove material carried upon a substrate, preferably in substantially parallel lanes of material-free areas, which apparatus comprises an optical generator for generating optical energy in a primary beam, partitioning devices for dividing the primary beam into a plurality of derivative beams, reflective devices for reflecting each of the derivative beams to form a plurality of working beams which impact the substrate, focusing lenses for focusing each of the plurality of working beams upon the substrate, and transport means for transporting the substrate in a direction transverse of the plurality of working beams to effect continuous removal of material in substantially parallel lanes from the substrate by the working beams.

Abstract: A cash replacement system including an encoded plastic card and a card acceptor mechanism is provided by punching a number of specially shaped apertures with predetermined orientations into a card. The acceptor mechanism which receives the card has a sensor pin aligned with each of the punched apertures of the plastic card. The sensor pins have a probe section at one end which is shaped to substantially conform to the shape of the punched apertures of the plastic card so that when they are in alignment with the apertures the probe sections will fit in the apertures as the sensor pins are depressed toward the card. The sensor pin also has a surface area adjacent the probe section which engages the card so that when the probe section extends through the aperture it insures that the aperture is of the correct shape and orientation. The sensor pins are lowered toward the card by a drive mechanism which is linked to a handle or other control device.

Abstract: An improved gear burnisher for removing minor gear tooth defects by burnishing is provided by rotating the work gear to be burnished in mesh with three different burnihing gears, at least one of which is powered. The improvement consists of burnishing the work gear with one burnishing gear that has a low operating pressure angle, another that has a high operating pressure angle and a third burnishing gear that has an intermediate operating pressure angle. The third also preferably has a generated pressure angle that is 0.5 degrees or more greater than the generated pressure angle of the work gear to provide a concentrated radial pressure sliding load at the tips of the teeth of the work gear.

Abstract: A differential checking head for checking tooth-to-tooth spacing of evenly spaced toothed gears or for checking lead variations of helical gears is disclosed. The checking head includes a pair of sensing fingers which have contact portions that touch gear profiles at predetermined test points. One of the sensing fingers is mounted on an arm which is pivoted in a fixed frame and which carries a moveable sensor actuator. The other sensing finger is mounted on a second arm which is also pivoted on the fixed frame and which carries a moveable sensing element which engages the actuator that is secured to the first arm. Both of the sensing arms are returned to their initial positions by return springs; and a second sensor, or limit switch, may be actuated by the actuator that controls the first sensor. The checking head provides a differential reading dependent upon the relative motion of the two sensing arms.

Abstract: A master star gear, or rotor, for testing the dimensions of an internal toothed ring gear, or stator, of a gerotor hydraulic mechanism is provided by truncation of the teeth of a mating star gear rotor so that the center-to-center variation that occurs between the centers of the ring gear and the star gear along a line may be detected and measured in order to measure the magnitude of the manufacturing errors that are present in the ring gear. The ring gear is held in place on a rotating support member by a friction fit against flats on an arbor of the support member.

Abstract: A machine which may be used to either check or to machine the profile of an orbiting star gear for a gerotor type of fluid motor or pump is disclosed. The profile of a star gear is traced due to the interaction of a slide that carries a sensor, or a machining tool, in a back and forth direction toward and away from the star gear and in a second direction transverse to this back and forth direction with respect to a frame member. The slide is driven by an eccentric disc, at a rate which is determined in accordance with the number of teeth on the specific star gear in question. The combined motion of the star gear and the two slides causes the sensor, or the machining tool, to trace out the profile of the desired star gear for the purpose of either checking its profile, or of machining a new gear. A spring member is connected to the frame member to allow the frame member to move in a transverse direction but without rotation.

Abstract: A machine which may be used to either check or to machine the profile of an orbiting star gear for a gerotor type of fluid motor or pump is disclosed. The profile of a star gear is traced due to the interaction of a slide that carries a sensor, or a machining tool, in a back and forth direction toward and away from the star gear and in a second direction transverse to this back and forth direction with respect to a frame member. The slide is driven by an eccentric disc, at a rate which is determined in accordance with the number of teeth on the specific star gear in question. The combined motion of the star gear and the two slides causes the sensor, or the machining tool, to trace out the profile of the desired star gear for the purpose of either checking its profile, or of machining a new gear. A spring member is connected to the frame member to allow the frame member to move in a transverse direction but without rotation.

Abstract: An involute disc gauge which is capable of verifying that a variable involute gear checking apparatus is functioning properly is described. The gauge consists of a support block, which is mounted for rotation and an adjustable bar which is slideable in the support block to adjust the diameter of the circle described by the outer end of the bar. Removable discs of various diameters are provided at the end of the adjustable bar in accordance with the base diameter of the gear being checked to achieve highly accurate verifications of a multitude of gear sizes with a single gauge.