Abstract: A programmable manipulation machine for picking up a succession of small components, such as semiconductor chips, and placing them precisely in predetermined positions on a work-piece, such as a substrate. The machine includes a vacuum chuck assembly which is movable by a servomotor along a relatively long horizontal axis between a chip pick-up station and a dip assembly station and which is also movable, by means of digital stepper motors, linearly in a transverse horizontal axis and a vertical axis, and rotationally about the vertical axis. Also included are a substrate-supporting work table which is also movable, by means of a digital stepper motor, in the transverse horizontal direction, and a control unit for direction and sequencing movement of the chuck assembly and work table in accordance with operator-changeable positional data stored in a memory associated with each movement axis.

Abstract: A novel cylindrical valve plug for the ported bore in valve, particularly a class of hot and cold water mixing valves, is disclosed. The plug, in an illustrative embodiment, comprises an inner cylindrical core, a non-metallic, yieldable elastic sleeve compressed about the sleeve, and placed under radial compression inside the valve bore, so as to bear and exert pressure radially outward on the inner wall of the valve bore.A multiplicity of small serrations on the surface of the core penetrate partially (but with non-cutting indentation rather than puncture) into the sleeve when the sleeve is compressed, leaving air pockets in the valleys of the serrations. When, owing to any cause, such as temperature rise, the compression of the sleeve rises, it expands elastically into the "breathing space" afforded by these pockets, instead of increasing the radial pressure between the valve plug and the valve bore, such as would increase the resistance to turning or to axial travel of the valve plug.

Abstract: The disclosure is of a trousers or skirt hanger comprising a horizontal beam provided with a support hook, and having integrally formed with each end thereof, a depending clamp frame or jaw, with a garment gripper at the lower end thereof, each depending clamp frame or jaw being opposed by another clamp frame or jaw pivoted thereagainst at a mid-point, and furnished at the lower end by a garment gripper engageable against the gripper of the first-mentioned jaw.An inverted U-spring surrounds the pivot of the two jaws, and has arms which act normally to spread the two jaws apart at the top, whereby the lower ends of the jaws act through their grippers to press the grippers against one another at the bottom. The grippers are opened to receive a garment between them by pressing handle parts by the two jaws together at the top.

Abstract: A system is disclosed for exposing to ultraviolet light a semi-conductor or hybrid substrate coated with photo-resist, in back of a mask having bars and very narrow slits, the diffraction patterns ordinarily experienced at the substrate being virtually eliminated through use, between the light source and the mask, of a light integrator comprised of two successive matrixes of very small lenses or lenticules. The lenticules form a large number of magnified, superimposed, slightly displaced images of the light source in the plane of the substrate; and when the slitted mask is interposed, this light forms a large number of diffraction patterns on the substrate which, because of their large number, superimposition, and slight displacement, results in extreme uniformity of light intensity and sharp resolution throughout the pattern of light on the substrate.

Abstract: A reinforced paperboard produce container having reinforcing end frames of molded thermosetting plastic or other suitably rigid construction secured to the outer sides of the end walls of a paperboard container body with edge flanges on the frames projecting inwardly over the upper end wall edges and under the bottom wall of the body to provide upper and lower stacking edges. The reinforced containers are of sufficient strength, and interfit in such manner, that a number of them may be stacked with ample strength and stability in vertical columns. The lower stacking edges are recessed or bevelled to permit lifting of the container by a clamp truck. The container has hinged lids or cover panels formed with tabs which engage with formations on the end frames to alternatively releasably lock the lids in closed, or open, folded away positions. The containers replace wood containers previously used, and incorporate useful arrangements for latching the lids closed, for shipment, or open, for display of the produce.

Abstract: A reinforced paperboard produce container having reinforcing end frames of molded thermosetting plastic or other suitably rigid construction secured to the outer sides of the end walls of a paperboard container body with edge flanges on the frames projecting inwardly over the upper end wall edges and under the bottom wall of the body to provide upper and lower stacking edges. The reinforced containers are of sufficient strength, and interfit in such manner, that a number of them may be stacked with ample strength and stability in vertical columns. The lower stacking edges are recessed or bevelled to permit lifting of the container by a clamp truck. The container has hinged lids or cover panels formed with tabs which engage with formations on the end frames to alternatively releasably lock the lids in closed, or open, folded away positions. The containers replace wood containers previously used, and incorporate useful arrangements for latching the lids closed, for shipment, or open, for display of the produce.