Abstract: A knuckle or swivel joint of the half-ball and socket type comprising a stud terminating in an enlarged diameter half-ball member disposed in the socket member and having a recess in which is engaged a biasing insert member made of resilient or elastomeric material placed under compression during assembly of the joint. The joint bearing surfaces are elastically pre-loaded in an appropriate direction which causes firm engagement of the bearing surfaces in mutual engagement and thus preventing play and rattling of the joint and compensating for wear.

Abstract: In a die, punch and core rod assembly for a powder compacting press wherein the core rod or rods remain stationary while the punch or punches are reciprocable relative to the die, the invention provides individual longitudinal position adjustment for the core rods by fitting the end of the core rods in a threaded member such as a set screw threading in a threaded bore in a core rod support member. The core rod support member is in the form of a pair of plates one defining a core rod support plate and the other a retainer plate, sandwiching a plastic locking plate. The core rods are immobilized in their adjusted position by the plastic locking plate, sandwiched between the core rod support plate and the retainer plate, being provided with a threaded bore aligned with the threaded bore in the support plate and having a slight screwthread mismatch with the threaded bore in the support plate.

Abstract: A gaseous fuel-air mixture device for an internal combustion engine having an intake for a fuel-air mixture. A chamber for mixing gaseous fuel and air is provided above the intake. The gaseous fuel is uniformly injected into the mixture chamber from an aperture in the chamber wall. The quantity of air mixed with the gaseous fuel in the mixture chamber is controlled by adjusting the height of a control plate disposed above the chamber.

Abstract: An improved artificial fishing lure for top water or surface fishing of the general type sometimes referred to as the "buzzbait" variety. The body of the lure has a forward section of hull shape provided with at least one keel or fin extending downwardly at the trailing end of the hull. The rearward section of the lure body is a solid shank with a hook attached at its trailing end and suitable for affixing various types of artificial or natural baits. The body of the lure has a flat surface forming a bend at an angle of 120.degree. to 170.degree.. The keel or fin, centered beneath the bend at the trailing end of the hull, has a circle painted on each side so as to imitate an eye. Two bulges are disposed in the lower surface of the lure body between the bend and the fin for the purpose of adding stability to the lure body. A loop is affixed proximate the forward end of the hull for attaching the end of a fishing line. The loop is formed with an upper leg disposed rearwardly at an angle.

Abstract: In the electrical discharge machining of the surface of a recess in a workpiece electrode to a shape corresponding to that of a tool electrode, the electrodes are relatively displaced, during a finishing phase of machining, along an axis of penetration and simultaneously in a plane perpendicular to the axis of penetration with a cyclic translational movement whose amplitude increases with the penetration of the tool in the workpiece. This provides a virtual 3-dimensional dilatation of the tool as it advances, and enables control of the sparking in both the frontal and lateral parts of the machining zone, such that the shape of the machined portion is an image of the tool shape. The cyclic translational movements can be obtained with an eccentric member whose eccentricity relative to a shaft is controlled by limiting axial movement of the shaft at a position corresponding to a predetermined penetration.

Abstract: A part pick-up head for transferring a part from the ejection station of an apparatus, such as a powder compacting apparatus, to a discharge station. The pick-up head is internally provided with a pair of reciprocating jaws, actuated by pressurized fluid such as compressed air, and arranged to clamp the part at the ejection station with enough pressure to hold the part securely for transfer to the discharge station. At the discharge station, the clamping jaws are spread apart by a return spring when fluid pressure is released. Auxiliary holding means in the form of suction ports above the part may be disposed in the pick-up head, and the pick-up head may also incorporate suction orifices sweeping clean the surface of the die plate over which the pick-up head travels from the ejection station to the discharge station.

Abstract: A support member for the end of a rotatable shaft for winding and unwinding a curtain of articulated slats forming a roll-type shutter or awning. The support member is made of a pair of interlocked, L-shaped plates forming a box-like structure open at both ends. A bushing, through which is passed the end of the rotatable shaft, is journalled through one of the L-shaped plates and is held in position by a U-shaped saddle member. The support member is converted to a gear drive by replacing the bushing with a worm wheel and mounting in the U-shaped saddle member a worm gear meshing with the worm wheel. The worm gear is mounted on, or made integral with, a drive shaft. The U-shaped saddle member is arranged to be mounted in any one of a plurality of positions within the box-like enclosure so as to provide several possible orientations for the drive shaft.

Abstract: This invention relates to a device using solar energy to cause a "chimney effect" to cool and refresh the interior atmosphere of a building or a vehicle. The invention further provides a modification which takes advantage of the exhaust heat of an engine so that it can operate during the night or in sunless days.

Abstract: An adjustable and controllable electrode wire support and guide mechanism for traveling wire EDM apparatus wherein an electrode wire, longitudinally fed, is stretched between a pair of support and guide members, and wherein at least one of the support and guide members is in the form of a helically grooved cylindrical member directly driven by a servo-motor. The helical groove defines guiding surfaces for the electrode wire which is in engagement with opposite sidewalls of the groove and, by rotating the helically grooved support and guide member by the servo-motor, the electrode wire is caused to take a predetermined inclination relative to the workpiece.

Abstract: A modular model building structure comprising an integrally-formed base and a plurality of modular units. The modular units are formed so as to fixedly contact with the base with other modular units of the model structure. Further, the modular units are interchangeable, in part, thereby allowing the model structure to be arranged in several alternative configurations.

Abstract: A baby bed rocking mechanism comprising a pair of transverse members each supporting respectively the front legs and the rear legs of a baby bed or crib. The transverse members are pivoted, substantially at their center, relative to a base member. One of the transverse members is mechanically pivoted, or rocked, by a motor driven cam.

Abstract: In a ball and socket joint comprising a ball and a socket in mutual swivelling sliding engagement with each other, the ball having a stud integrally formed at one end thereof and projecting outwardly through one end of the socket, the improvement consisting in forming the socket with a diverging frusto-conical flange extending in the direction of the stud and defining an integrally formed retention flange for a flexible oil-resistant seal having a bellows type body provided at one end with an annular band stretched over the periphery of the stud and at the other end with a reinforcing bead stretched over the retention flange.

Abstract: A lapping method and apparatus providing accurate lapping of a workpiece surface and substantially even wear of the lap surface in the course of a lapping operation cycle. The workpiece having a surface to be lapped is held in an oscillating plate reciprocated along a first axis, and displaced at a much lower rate along a second axis. The plate is reciprocated along the first axis by means of a rigid link pivotally attached at one end to the plate and at another end to a rotating eccentric. The plate is displaced along the second axis by means of a pair of rigid parallel links pivotally attached to the plate at one end and pivotally attached each to a rotating eccentric at their other end.

Abstract: A machine tool provided with a movable table supported by a stationary table, the movable table being displaceable relative to the stationary table in all directions and being supported by the stationary table by pressurized fluid bearing. The movable table is positioned by at least three actuators pivotally connected at one end to the stationary table and at their other end to the movable table such that the lengths of the actuators, controlled by an appropriate numerical control system, result in a predetermined position of the movable table relative to a reference position.

Abstract: In the electrical discharge machining of the surface of a recess in a workpiece electrode to a shape corresponding to that of a tool electrode, the electrodes are relatively displaced, during a finishing phase of machining, along an axis of penetration and simultaneously in a plane perpendicular to the axis of penetration with a cyclic translational movement whose amplitude increases with the penetration of the tool in the workpiece. This provides a virtual three-dimensional dilatation of the tool as it advances, and enables control of the sparking in both the frontal and lateral parts of the machining zone. The cyclic translational movements are obtained from a rotatable shaft having an axis parallel to the axis of penetration and an eccentric member cooperating with the rotatable shaft to slide relative to the shaft in a direction forming a predetermined angle with the direction of penetration, the eccentric member being rotated in unison with the shaft about its axis.

Abstract: In the electrical discharge machining of the surface of a recess in a workpiece electrode to a shape corresponding to that of a tool electrode, a method whereby the electrodes are relatively displaced, during a finishing phase of machining, along an axis of penetration and simultaneously in a plane perpendicular to the axis of penetration with a cyclic translational movement whose amplitude increases with the penetration of the tool in the workpiece. This provides a virtual 3-dimensional dilatation of the tool as it advances, and enables control of the sparking in both the frontal and lateral parts of the machining zone such that the shape of the machined portion is an image of the tool shape. The cyclic translational movements can be obtained with an eccentric member whose eccentricity relative to a shaft is controlled by limiting axial movement of the shaft at a position corresponding to a predetermined penetration.

Abstract: In the electrical discharge machining of the surface of a recess in a workpiece electrode to a shape corresponding to that of a tool electrode, the electrodes are relatively displaced, during a finishing phase of machining, along an axis of penetration and simultaneously in a plane perpendicular to the axis of penetration with a cyclic translational movement whose amplitude increases with the penetration of the tool in the workpiece. This provides a virtual 3-dimensional dilatation of the tool as it advances, and enables control of the sparking in both the frontal and lateral parts of the machining zone, such that the shape of the machined .[.position.]. .Iadd.portion .Iaddend.is an image of the tool shape. The cyclic translational movements can be obtained with an eccentric member whose eccentricity relative to a shaft is controlled by limiting axial movement of the shaft at a position corresponding to a predetermined penetration.

Abstract: A process and apparatus for achieving relative displacement between the electrode tool and the electrode workpiece of an EDM apparatus about a closed or looped path at a speed varying as a function of the machining gap width, such as to remove material from the machined surfaces at a substantially constant material removal rate.

Abstract: In electrical discharge machining, an electrode is displaced towards a workpiece at a rate controlled as a function of the sparking conditions. The relative position of the electrode and workpiece is measured and, beyond a preset .[.reference.]. relative position, advance of the electrode is slowed as a function of the displacement past the reference position, or is stopped at the reference position, while continuing sparking and allowing withdrawal of the electrode if necessitated by the sparking conditions.