Abstract: A multi-spindle drilling machine for simultaneously drilling a plurality of holes, in particular suitable for drilling a plurality of tiny, closely-spaced holes, comprising a drivable drive wheel coacting with a plurality of friction wheels, each connected to a flexible spindle, whose ends away from the friction wheels extend through bores in a spaced apart spindle guide block. Said bores correspond with opposite bores in a drill guide block and are disposed in accordance with the pattern of the holes to be drilled. A coupling arrangement is provided in the space between the drill guide block and the spindle guide block for connecting the shanks of drill bits placed in the bores of the drill guide block to the spindles.

Abstract: The annular cutter of the present invention has a body portion with a plurality of teeth circumferentially spaced about the lower end thereof and a plurality of flutes extending upwardly around the outer periphery of the body portion between the teeth. Each of the teeth has at least two circumferentially stepped cutting edges with the trailing edge being the outermost cutting edge. These two cutting edges are separated by a shoulder which in the preferred embodiment is defined by the bottom wall of the flute. This shoulder has a radial clearance adjacent the outermost cutting edge to accommodate the growth of the outermost chip cut by the outermost cutting edge to facilitate discharge of the chips through the flute.

Abstract: A hybrid optical correlator which uses a Fourier plane detector to cause adjustment of an image of an object in scale and orientation so that a matched filter can provide a correlation of the object independent of scale and orientation.

Abstract: Process and apparatus for plugging or plugging and servering gas service lines may be deployed from a building without requiring access to either the utility service main or main tee connections. The processes are intended to be undertaken while gas is being supplied to the service. The apparatus also allows service lines to be relined under these conditions without requiring direct access to either the utility service main or main tee connections.

Abstract: An improvement to an air logic circuit for an airfeed peck drill includes the insertion of a retract valve between the command valve and the air motor.

Abstract: An auxiliary mirror having a base with perpendicular members for abutment with a vehicle mirror housing. An extension on one of the members carries the auxiliary mirror. Elastic straps with hook elements secure the base to the mirror housing. The base is shaped to abut the mirror housing perimeter.

Abstract: A printer's loupe for facilitating the on-cylinder repair of printing plates in a web-fed printing press. A self-contained hand held unit having integral means for illuminating the surface to be inspected comprises a magnifying viewing lens and a rubber magnet for mounting the device to the curved outer surface of a printing plate on a printing cylinder. A curved bottom portion of the device generally conforms to the radius of the print cylinder.

Abstract: By using a viewing device and the proper configuration of visual stimulus material, one can create competition between the two eyes and determine what is perceived by a binocular observer. Where one eye sees light or pattern in a zone of the visual field, surrounded by a dark boundary, and the other eye sees stimulus material which does not have such a boundary, the material which is contained within the dark boundary will dominate the binocular perception. With some stimulus configurations the observer will see a bright, "lustrous" form which appears to float slightly above the stimulus surface. In other cases patterns presented to each eye will be dissected and combined into a composite perception which is determined by the presence of the dark boundary. Applications for the invention include testing of patients for impairment of vision and producing special effects in movies and other forms of entertainment.

Abstract: The extent of clouding of the lens of a human eye is measured and quantified by directing a beam of electromagnetic radiation through the iris and against the clouded portion of the lens so that the clouded portion disperses and reflects the incident radiation. A selected part of reflected radiation which makes an angle of 10.degree.-40.degree. with the beam of incident radiation is monitored for intensity by a photoelectronic transducer whose signals are transmitted to an ammeter or to a microprocessor which latter transmits modified signals to a display unit and/or to a printer. The clouded portion of the lens can be observed through an optical system with an ocular whose axis coincides with a portion of the path of incident radiation.

Abstract: A device for driving optical parts of an optical pickup comprises a magnet having first and second magnetic pole surfaces, each of the first and second magnetic pole surfaces having adjacent different magnetic poles which generate a magnetic field that is disposed perpendicularly to the magnetic field of the other magnetic pole surface, and first and second coils which oppose corresponding first and second magnetic pole surfaces.

Abstract: There is disclosed a hand-held magnifying apparatus which employs a lens assembly housing. The housing has first and second magnifying lenses located therein whereby the lenses can be adjusted to obtain a variable focal length. The housing is terminated at one end in a cylindrical hooded section which has coupled thereto an angled power source accommodating section. The power source accommodating section includes a source of illumination and cylindrical condensing lenses which operate to condense the light pattern from the illumination source and to change the light pattern from an elliptical to a circular pattern to thereby uniformly illuminate the text or material to be viewed via the magnifying lens assembly.

Abstract: A method for manufacturing a novel gear fit article that includes metal plating the surface of an annular steel work is disclosed. The plating is made of copper to prevent nitriding of the underlying steel. The plated steel work is gear cut to form internal teeth of exposed steel. The annular gear is nitrided to harden the teeth and, in the process, softens the metal plating. Thereafter, the annular gear is shrinkage fitted into a rotor body to form the novel gear fit article.

Abstract: An apparatus for preparing an optical fiber for connection to another optical fiber is comprised of a clamp for gripping an optical fiber at a first location, a mechanism for transversely severing and removing insulation from a predetermined length of the fiber to provide a insulation severed end portion and a bared fiber portion, a cleaving mechanism for forming a transverse score in the bared fiber portion at a predetermined distance from the severed end portion of the insulation, and a fiber tensioning mechanism for breaking the optical fiber along a transverse plane containing the score.

Abstract: To provide for an easy and accurate color vision tester, a plurality of yellow, red and green lights are mounted, or projected, onto a display, with the yellow lights providing for the background luminance while the red and green lights providing for a mixture of red and green luminance. Different patterns on the display are formed by a combination of the red and green lights. A particular pattern can be selected from among the various patterns by a pattern select circuit. The intensity of the red to green lights can be inversely varied so that different ratios of intensity for the selected pattern may be presented to an observer. Each of these ratios corresponds to a certain type of color vision. Therefore, by determining whether an observer is able to discern the pattern from the background in a particular intensity setting, the type of color vision an observer has can easily be ascertained.

Abstract: The present invention is directed to an eye refractometer, one embodiment of which, includes two-aperture stops positioned substantially conjugate with the pupil of the eye to be examined. Further, a two-dimensional light position detecting device is provided for detecting the two-dimensional positions of two light beams passed through the light beam incidence area of the pupil of the eye to be examined, reflected by the fundus of the eye to be examined and passed through the light exit area of the pupil of the eye to be examined. A processor is provided for obtaining the refractive value of the eye from the output of the two-dimensional light position detecting device.

Abstract: Visual disorders of the retina are identified and assessed by stimulating the eye(s) with an array of controllable optical elements wherein the controllable elements are activated with M-sequences. The transient responses of the eye to the activation of the array of elements is obtained and processed using the known M-sequences to identify any areas of disease. The optically controllable elements can produce flashes of light or change colors in response to the energization thereof.

Abstract: A cutter for the deburring of bores comprises a rectangular edged cutter element having taperingly extending cutting edges, having clearance surfaces ground undercut and comprising a convexly ground contact surface on one end of the cutter head for contact with the internal surface of a bore. Two oppositely aligned cutter elements are mounted for displacement in a radial direction in a guide recess of a tool holder, and while in the operative position during the deburring of a bore, the cutting elements are displaced inwards radially because of the tool holder feed and because of the tapered extension of the cutting edges, against a spring force in the guide recess, until they finally reach the inner area of the bore in the non-cutting mode.

Abstract: The invention relates to a method of assembling two parts of which one part is a sub-assembly formed of a plurality of relatively movable components.The method comprises the steps of holding the components of the sub-assembly in their desired relative positions for assembly, cooling the sub-assembly sufficiently to prevent relative movement between the components of the sub-assembly, and offering the sub-assembly to the other part while the components of the sub-assembly are locked against one another.It is preferred to coat the sub-assembly prior to cooling with a liquid, the cooling being sufficient to freeze the liquid to cause locking of the components.

Abstract: A support disc preferably has an annular periphery, a central opening and a pair of substantially parallel side surfaces. Abrasive packs are disposed on the periphery of the disc in spaced relationship to one another. Each pack is formed from a stack of thin abrasive strips having abrasive particles on one surface. The packs are attached to the disc periphery with opposite ends disposed against the opposite side surfaces of the disc. The packs are preferably tilted in the direction of disc rotation so that the trailing edge of the outermost strip in each pack engages the workpiece. When the angle of tilting is large, the pack ends of the packs may be cut at an angle to facilitate an abutting relationship between adjacent disc packs. In one embodiment, the abrasive wheel is disposable. In another embodiment, only the abrasive packs on the disc (and not the disc) are disposable. In this embodiment, the packs may be bent into a horse-shoe shape and bonded to one another at their peripheries as by resin.