Abstract: A microfiche having pinholes instead of lenses. The pinholes and thickness of the fiche are of such dimensions that the device functions as in the manner of a pinhole camera.

Abstract: An optical magnifying device employing fiber optics. When functioning as a microscope, the object plane is defined by and divided into sub-areas by the input termini of many coherent fiber bundles. Each output terminal of each bundle is provided with an objective lens which projects onto an image plane. When used as a microfiche reader, a first magnifying stage is provided, and this (first) image is in turn further magnified in the same manner. Microfiche characters of 2 micron size may be resolved by the entire system.

Abstract: An indexing construction for microfiche elements of the type wherein the microfiche is provided with integral lens elements to define a lensfiche. The improvement comprises raising the lens elements with respect to the microfiche to thereby define a plurality of upstanding positioning and indexing nodules. These nodules cooperate with complementary nodules on either a viewing screen or a harness member. By virtue of this construction both alignment of the lensfiche and indexing thereof relative to a viewing screen are facilitated.

Abstract: A microfiche structure consisting of a laminate of an opaque, apertured web sandwiched between two transparent sheets. The transparent material partially extends into each aperture to thereby define, for each aperture, an optical doublet. The laminate may be continuously formed by compression, as by rolls.

Abstract: A shear liquid fan drive coupling for the radiator cooling system of an internal combustion engine of the type wherein a temperature responsive valve controls the degree of rotary coupling between the engine and a radiator cooling fan by controlling the active quantity of shear liquid in a liquid coupling between the engine and the fan. The specific improvement relates to a bi-metal strip for the temperature controlled fluid coupling, the strip being so configured that it cannot be mounted on the housing of the coupling except in a predetermined orientation therewith. In this manner, overheating of the engine due to faulty mounting of the bi-metal strip is precluded.

Abstract: A hydraulic coupling of the temperature responsive type and particularly adapted to couple the engine to the radiator fan of an internal combustion engine. The specific improvement resides in a dam adjacent the dump hole. The dam is pivotable so as to assume either of two angular positions upon assembly of the coupling. One angular position of the dam accommodates relative rotation of the drive rotor and coupling housing in one direction, the other angular position of the dam accommodating such relative rotation in the other direction. Further, by virtue of its pivoting action the dam can contact the periphery of the drive rotor.

Abstract: A hydraulic coupling of the temperature responsive type and particularly adapted to couple the engine to the radiator fan of an internal combustion engine. The specific improvement resides in a rolling dam adjacent the dump hole which connects the outer portion of the drive chamber containing the drive rotor with a shear liquid reservoir passageway. The dam rolls between two abutments carried by the housing cover so as to assume either of two positions with respect to the dump hole. One position of the dam relative to the dump hole accommodates relative rotation between the drive rotor and coupling housing in one direction, the other position of the dam relative to the dump hole accommodating such relative rotation in the other direction. The rolling dam automatically moves to the proper position relative to the dump hole upon either direction of relative rotation between the drive rotor and coupling housing.

Abstract: A shear liquid coupling of the temperature controlled type for driving the cooling fan of the radiator of an internal combustion engine. The specific improvement resides in the use of a separate tube for returning drive shear liquid from a zone adacent the drive rotor periphery to the shear liquid reservoir. The use of such a separate tube obviates the need of drilling (or casting) a return shear liquid passage in the coupling. Further, the use of such a separate tube permits operation in either direction of fan rotation.

Abstract: A torsional vibration damper of the type having a hub which carries an outer inertia ring coupled thereto by an elastomer. Supplemental damping is added to the system via the use of dry friction. A broad frequency range of effectiveness is provided by designed non-linearity of the device made possible by the dry friction. A greater broadening of the frequency range of effectiveness is made possible by utilizing a plurality of inertia masses carried by the hub, all mounted on the same elastomer. Elastomeric compression is utilized to spring-load the friction surfaces, providing a series-parallel, elastomer viscous-dry friction damping medium. In multiple mass application the concept of mass interaction is utilized to further determine the dynamic performance of the damper.

Abstract: A micro information reader defined by a thin container open at one side. The open side receives a micro information carrier. The carrier and the thin container are provided with interengaging ridges which function as detents to index the micro information carrier with respect to fixed illumination sources and projection lenses on the reader.

Abstract: A microfiche having pinholes instead of lenses. The pinholes and thickness of the fiche are of such dimensions that the device functions as in the manner of a pinhole camera.

Abstract: A turbocharger system for an internal combustion engine. A pair of turbochargers are arranged such that the compressor of the first feeds the turbine of the second, the output of the latter fed to a first intercooler. The fan of the second turbocharger pulls ambient air through the first intercooler. The cooled air from the first intercooler is fed to a second intercooler, the latter positioned in front of the engine radiator. The output of the second intercooler is fed to the intake manifold of the engine.

Abstract: An optical projection apparatus employing lenses between 30 and 150 mils radius. The lenses are arrayed over a surface, near a photographic film which carries microimages. The microimages are projected through the lenses and against mirrors. The mirrors, termed folding mirrors, reduce the length of the projections in a direction along the optic axes of the lenses. The folding mirrors effectively reduce the throwing distance of the lenses thus reducing the thickness of the apparatus. The apparatus is also used to record.

Abstract: An optical magnifying device employing fiber optics. When functioning as a microscope, the object plane is defined by and divided into sub-areas by the input termini of many coherent fiber bundles. Each output terminal of each bundle is provided with an objective lens which projects onto an image plane. When used as a microfiche reader, a first magnifying stage is provided, and this (first) image is in turn further magnified in the same manner. Microfiche characters of 2 micron size may be resolved by the entire system.

Abstract: A plural function optical apparatus defined by first and second parallel lensfiche elements positioned with their emulsion sides facing each other and first and second parallel optical screens each spaced from and parallel to a respective face of the lensfiche. Two lighting sheet elements may be added to increase the number of functions (projection, recording).

Abstract: A fan blade mounting employing two integral workpieces formed of sheet metal, each having a central hub portion and radially extending arms, the sheet metal arms of each are centrally bulged or ribbed in the region where they join the hub, the ribs facing in opposite directions to form a cavity in each two-part arm. The central hub portion of each workpiece is depressed from the plane of its arms, the hub portions being nested. Each spider arm is thus stiffened by the compressive loading within one rib when a transverse force is applied on the opposite arm.

Abstract: Method for making a microfiche structure consisting of a laminate of an opaque, apertured web sandwiched between two transparent sheets. The transparent material partially extends into each aperture to thereby define, for each aperture, an optical doublet. The laminate may be continuously formed by compression, as by rolls.

Abstract: An adjustable clamping jaw assembly for a lathe chuck. The jaw is adjustable by assuming any one of several discrete positions relative to an elongated jaw base upon which it is mounted. Such adjustment is carried out by a keyway in the elongated jaw base, or key, and a rotatable tumble block having a plurality of keyways.

Abstract: A combined microfiche camera and projection apparatus. The apparatus includes an objective lens for forming a real image on the input end of a coherent bundle of light fibers (internally reflecting glass fibers). The output end of the bundle is dispersed into a plurality of spaced-apart coherent fiber sub-bundles. The ends of the latter terminate contiguous to the emulsion of a microfiche. A projection screen is spaced from the microfiche. The device functions both to record and to read out.