Abstract: An optical system of colposcope comprises a pair of independent observation optical sub-systems each having a family of objective lenses including a magnification varying optical sub-system, the magnification varying sub-system in one observation sub-system being ganged with the magnification varying sub-system in the other observation sub-system. The optical system also comprises a photographing optical sub-system having a family of objective lenses including a magnification varying optical sub-system which is ganged with the magnification varying sub-systems of the observation sub-systems, and an illumination optical sub-system for illuminating an object being examined. The observation, the photographing and the illumination sub-system are disposed so that their optical axes converge on the object being examined.

Abstract: An apparatus for automatic diagnosis of cells comprises a microscope, a scanning stage on the microscope, a sample carrier used to feed a sample to the scanning stage automatically, an automatic focussing mechanism, a detector assembly for detecting the light absorbance of the sample, and computation means. The computation means controls the operation of the components mentioned and automatically performs the processing of data obtained from the detector assembly, whereby the overall operation from the supply of cells to the diagnostic determination thereof is fully automated.

Abstract: A flywheel for small size tape recorders is disposed in peripheral frictional engagement with an output wheel of a motor for rotation in the opposite direction from the latter. The ratio of moment of inertia of the rotating motor portion about the output shaft to the moment of inertia of the flywheel about its support shaft is chosen equal to the reciprocal of the ratio of their angular velocities, thereby causing a substantial balancing of the angular momentum of each other.

Abstract: An electrical shutter comprises a first detent member which maintains a shutter drive member at its start position, and a second detent member which maintains a shutter in its open position. Upon abutment of the shutter drive member, both the first and second detent members are urged to move in a direction away from the drive member in response to the rotating force of the shutter drive member. The shutter also includes electrical circuits for accessory features which are connected through normally open switches with the common bus of the power source.

Abstract: Fanfold paper emerges from an outfeed slot in a printer along a paper guide extender and falls by gravity into a paper basket to resume its original fanfold configuration. The paper slides between the extender and an upper paper forming guide which is slightly curled at its lower end to force the paper against the lower end of the paper guide extender to cause the paper to neatly fan fold within the basket.A wedge-shaped member is preferably provided upon the floor of the paper basket to urge the stacked paper into an inverted, slighty V-shaped configuration to further assure neat stacking and prevent corners of the paper from catching a perforation in the paper which would otherwise prevent neat stacking.

Abstract: An adaptor for an auto strobo unit comprises a trigger signal feed circuit for supplying a trigger signal to a flashlight trigger circuit of said auto strobo unit in response to the closure of a synchro contact of an automatic exposure controlled camera, a polarity inverter for inverting the polarity of an illumination interrupt signal supplied by a photometric control circuit of the camera to a polarity which is suitable to activate an illumination interrupt circuit of the auto strobo unit, an amplifier for amplifying an illumination interrupt signal to a given level, and circuit means for feeding the polarity inverter or the amplifier when the trigger signal feed circuit is operated. The adaptor enables an automatic exposure controlled camera to be combined with any kind of an auto strobo unit.

Abstract: A battery casing comprises a lid which closes a battery receiving chamber. Instead of mounting the lid in an outer panel of an instrument in which the battery casing is used, it is directly mounted on the body of the battery casing, thus avoiding the use of the outer panel of the instrument as an electrical conductive path for a battery contained therein. This permits the entire body including the outer panel of the instrument to be formed of a material such as plastics which is inexpensive and easy to machine.

Abstract: An ornamental display device having a mounting device and, attached thereto, a cage-like structure for holding and presenting an ornamental object like a gem. The cage-like structure is formed by at least three filaments and has a normally closed and an open position. The ornamental object can be removed and interchanged when the cage is in its open position.

Abstract: An apparatus is provided for use with a motor drive for cancelling a reaction energy of a drive motor upon rapid starting or sudden stop. The apparatus comprises a revolving member adapted to be operatively connected with the rotor of the drive motor. The member has an inertia which is equal to that of the rotor, and is adapted to be connected with the latter in the opposite sense therefrom.

Abstract: A means for use with an auto strobo unit for a camera of the type having an electrical shutter comprises a delay circuit in the auto strobo unit which circuit includes a capacitor and a resistor connected in series and adapted to cooperate with the X contacts of the camera, and a circuit connected with the delay circuit and producing a shutter closing signal. The delay circuit has a time delay which is equal to or by a given length of time greater than the illumination time interval of the auto strobo unit which is adapted to be connected with the X contacts, so that when an illumination is provided by the auto strobo unit in response to the closure of the X contacts, the delay circuit is triggered to cause said shutter closing producing circuit to produce a shutter closing signal or an under-exposure signal to close the shutter, unless it was previously closed, at the end of the illumination time interval or a given length of time after such time interval.

Abstract: A pin-feed tractor assembly for advancing a web of indeterminate length through a printing station and including a timing belt having spaced teeth defining interspersed grooves. The drive sprocket is arranged to engage the notches for moving the belt. Sections of the belt between adjacent notches are rigid while the region of the notches is flexible to permit bending of the belt only at the notches, thereby providing equal stresses in the belt. The outer surface of the belt is provided with feed pins arranged at equi-spaced intervals. The pitch of the belt teeth is one-half the pitch of the perforations in the elongated web which receive the feed pins. The pitch circle of the equi-spaced feed pins is smaller than the pitch circle over the rigid flat portions causing the feed pin to retract somewhat from the web before starting its circular path around the drive sprocket to prevent the web from being damaged or torn.The belt is a molded one-piece member.

Abstract: A scanner comprises a first array of a multitude of optical fibres having one of their end faces aligned along a rectilinear line and having their other end face disposed on a circle, a second array of a multitude of optical fibres having one of their end faces disposed in opposing relationship with the said other end face of the optical fibres of the first array and having their other end faces arranged together at a single location, a scanning disc rotatably disposed between the opposing end faces of the first and second arrays and having a single signal transmission aperture and a plurality of timing apertures formed therein, a single phototube disposed in opposing relationship with the collected end faces of the optical fibres of the second array, and a channel detector disposed adjacent to the timing apertures. The scanner achieves an optical scanning of a specimen to be examined.