Abstract: A long-test-film cassette for biochemical analysis comprises an unused film cassette part accommodating an unused long test film for biochemical analysis, and a used film cassette part for accommodating the long test film which has been pulled out of the unused film cassette part and used for biochemical analysis. A leading edge of the film is secured to a reel in the used film cassette part. In a cassette loading system, the unused film cassette part is provided with a protruded test film outlet portion and is loaded to a refrigerating compartment of an analysis apparatus with the test film outlet portion fitted in a hole of the refrigerating compartment.

Abstract: A biochemical analysis apparatus comprises a sample accommodating region, a refrigerator for keeping cool a long test film containing a reagent which reacts with a liquid sample to give rise to a change in optical density, and a test film conveyor for sequentially pulling out the long test film from the refrigerator. A sample applicator takes up the liquid sample from the sample accommodating region and applies it to the long test film at the position to which the long test film has been pulled out of the refrigerator. An incubator maintains the sample-applied portion of the long test film at a predetermined temperature for a predetermined time. A detector irradiates light to the sample-applied portion of the long test film, and measures the optical density given rise to by the reaction during or after the passage of the predetermined time.

Abstract: An optical density measuring system has a light projecting system which includes a light source and an optical fiber bundle which transmits light emitted from the light source to the specimen. The optical fiber bundle consists of first and second portions which are connected by an optical fiber connector.

Abstract: A new mechanism for supplying in sequence unused regions of an analytical tape by predetermined length to an analytical section arranged in an apparatus for biochemical analysis of a liquid sample is disclosed. The mechanism comprises a driving means for moving the analytical tape to supply its unused regions to the analytical section; a means for detecting length of the unused regions of the tape supplied to the analytical section comprising a roller which is arranged in contact with a surface of the tape so that it rotates with movement of the tape for the supply of the unused regions to the analytical section and a means for detecting number or angle of the rotation of the roller, and a means for controlling operation of the driving means according to the detected number or angle of the rotation of the roller.

Abstract: A simple inspection device is constituted for inspection of an analyzer for measuring ionic activity by using an ionic activity measuring device provided with at least one ion selective electrode pair for generating potential corresponding to ionic activity fo a predetermined ion, and a porous bridge for associating the electrodes of the ion selective electrode pair with each other, and by contacting potential difference measuring probes respectively with the electrodes of the ion selective electrode pair, thereby to measure a difference in potential between the electrodes. The simple inspection device comprises a supporting member having outer dimensions approximately equal to ther outer dimensions of the ionic activity measuring device, and an electrically conductive member supported on the supporting member for short-circuiting across the potential difference measuring probes when the potential difference measuring probes are contacted with the electrically conductive member.

Abstract: A simple inspection device is constituted for inspection of an analyzer for measuring ionic activity by using an ionic activity measuring device provided with at least one ion selective electrode pair for generating an electrical potential corresponding to ionic activity of a predetermined ion, and a porous bridge for associating the electrodes of the ion selective electrode pair with each other, and by contacting potential difference measuring probes respectively with the electrodes of the ion selective electrode pair, to thereby measure a difference in potential between the electrodes. The simple inspection device employs a supporting member having outer dimensions approximately equal to the outer dimensions of the ionic activity measuring device, and an electrically conductive member supported on the supporting member for short-circuiting across the potential difference measuring probes when the potential difference measuring probes are contacted with the electrically conductive member.

Abstract: A dual pipette device comprises a pair of housings joined rotatably around a vertically extending axis or disposed for lateral movement, a pair of cylinders disposed respectively at lower sections of the housings, a pair of piston members extending vertically, supported by the housings or the cylinders, and respectively having lower end portions vertically slideable in the cylinders, and dropping tip fitting sections disposed at lower end of the housings or the cylinders so that the dropping tip fitting sections communicate with the cylinders. The piston members are provided with a lock member for locking them to each other when the housings are rotated or laterally moved and the distance between the piston members becomes not larger than a predetermined distance, so that the piston members are vertically slideable integrally with each other.

Abstract: An analyzer for ionic activity measurement comprises a device supporting base provided with a liquid feeding section for feeding a reference solution in drops to one electrode of an ion selective electrode pair of an ionic activity measuring device and feeding a sample solution in drops to the other thereof, a potential difference measuring section, and a device ejecting section for ejecting the measuring device. A device holder is disposed for holding the measuring device on the device supporting base. A holder movement mechanism moves the device holder for transferring the measuring device sequentially to the respective sections of the device supporting base.

Abstract: A continuous push-drive chain formed by a plurality of blocks, each of the blocks having a letter V-shaped configuration in side elevation, defining large engagement surfaces relative to overall block size; and, structure for connecting adjacent blocks to one another disposed at one distal end of the V-shaped configuration, whereby large pushing forces between the blocks may be transmitted substantially unidirectionally and independently of the connecting structure, simultaneously increasing chain load capacity and reducing chain wear.

Abstract: A conveyor or chain having a tubular filament-wound cylindrical element used as the pins interconnecting the link plates and/or as rollers or bushings in the chain assembly. The element is formed from a length of tubular material which is wound on a mandrel having an outside diameter equal to the inside diameter of the tubular element. The filament of the winding is a long aramid fiber which is integrated in the tubular material by an adhesive agent.

Abstract: Devolatilization of sticky polyolefin powder and deactivation of catalyst residue can be carried out efficiently and sufficiently without the need for accompanying facilities commonly used in the treatment of powdery products in an apparatus comprising (a) a horizontal cylindrical body, (b) a stirrer provided with one revolving shaft and a plurality of specified stirring blades (c) an inlet pipe for introducing untreated polyolefin power and heating gas, (d) a variable barrage for controlling the holding amount of polyolefin powder insides of said horizontal cylindrical body, (e) an outlet way for discharging after-treated polyolefin powder and gas, (f) inlet pipes for heating gas having a pipe for feeding an after-treating agent, and (g) indirect heating mean.

Abstract: An incubator is provided with an inlet, a measurement station and an outlet for chemical analysis slides, and a number of levers or pushing devices for stepwisely circulating the slides through the apparatus. The device is useful for uniformly incubating a plurality of chemical analysis slides or the like according to a continuous, rather than batch, process.

Abstract: A clutch interlocking mechanism for use in a pushbutton tuner wherein a drive gear provided on a clutch mechanism is meshed with a rack of a memory slide, a support bracket, on which the clutch mechanism is mounted, is supported, at one side thereof, by a frame on a chassis through a fulcrum pin and, at the opposite side thereof, provided with a tension spring to assure positive engagement of the drive gear with the rack. The clutch interlocking mechanism further comprises a resilient member provided for the fulcrum pin to eliminate looseness at the portion of the fulcrum pin.

Abstract: A pushbutton tuner formed of a base unit (A) including a memory slide and operating members for displacing the memory slide upon operation of a push button; a coil unit (B) including a movable member provided with cores displaceable relative to coils; a clutch unit (C) including a clutch mechanism and provided with a rotating shaft for manual tuning operation; and an arm unit (D) including a plurality of button slides fitted with push buttons, respectively, and slidably disposed on a top plate. These units are assembled separately from each other and, then, mounted on a baseplate of the base unit (A).

Abstract: A sheet orthogonal-conveying method and apparatus in which the front edge of a sheet sliding under its own weight is delivered into the nip formed between a pair of rollers orthogonal to the direction of advancement of the sheet. The sheet is first guided so that its front edge slides into contact with the side edge of one of the rollers, preferably the upper one of the rollers, at a position away from the nip. After the sheet has reached a stationary position stopped by the roller, the position of the guide has changed so that the sheet may slide into the nip and be clamped and conveyed by the rollers. Preferably, the sheet is vibrated during this operation. An elastic guide piece may be utilized to urge the sheet toward a reference surface of the guide member.

Abstract: Method and apparatus for handling photosensitive sheets in which the photosensitive sheets to be processed drop by force of gravity upon the opening of a cassette which held the sheets. The sheets thus dropped are delivered to a retaining position, which is shielded from light, at a speed higher than the normal conveyance speed in an automatic developing machine which subsequently processes the sheets. Thereafter, the sheets are delivered to the automatic developing machine from the retaining position. The difference is determined between the delivering speed and the conveyance speed in the automatic developing machine. The driving of the delivering device is suspended when the curvature of the photosensitive sheet is beyond the predetermined value as determined by the difference.