Abstract: An explosion relief diaghragm or panel of the kind which forms a part of the wall of a vessel and which is adapted to give way in event of excessive pressure within the vessel as, for example, might be caused by an explosion, whereby the main structure of the vessel remains undamaged, and having its peripheral edge clamped between sealing gaskets, characterized by the provision of outwardly extending tongue-like portions at spaced intervals around said peripheral edge, and means adapted to sense the presence of each said tongue-like portion.

Abstract: A kneading machine includes a pot the diameter of which gradually increases toward the top from the bottom thereof, and a rotatable blade centrally located at the bottom of the pot. At specified positions on the inside wall of the pot there are provided a plurality of projections jutting toward the center of the pot. The rotatable blade is formed of a circular body with a specified radius and an integrated combination of a large blade and a small blade provided on the body at a circumferential angle of separation of about 180.degree.-270.degree.. The small blade is a rectangular plate which is inclined at a given angle to the central vertical axis of the body. The small blade has a bottom side located on the same horizontal plane as the bottom of the body and a top side which gradually rises toward the body and which is integrated to a specified outside position located lower in the vertical direction than the topmost plane of the body.

Abstract: A layout page organization for ultra-high reduction microfiche is provided that presents image pages of standard book size in a 100 page format with up to 400 pages being carried on the film insert of conventional aperture cards. The image pages of the 100 page format are organized in horizontal rows and vertical columns. A selector mechanism having a base or zero position return feature uses fixed position cam index pins and follower plates that are mounted for two dimensional freedom of movement to mechanically select and locate any desired page image of a selected 100 page format or to serially move to successive page images. A zero or base position adjustment is provided to compensate for minor discrepancies in the mounting position for the film insert. In a 400 page configuration quadrant positioning of the basic 100 page format on the film insert is used, and quadrant selection is additionally incorporated in the selector mechanism.

Abstract: A picture information retrieval system in which each time an initial position detecting mark provided in correspondence with the first picture on an information recording medium for detecting the first picture passes the initial position during the retrieval operation the content of the counting section is corrected.

Abstract: The invention uses frequency control of lamps and magazines in projectors and is especially adapted for programmed control by recording the frequency signals produced by previous rehearsal of the programme under manual control. The circuit uses an integrated voltage from the frequency signal to control threshold devices operating triggered switches controlling supply to the lamps, and to actuate a magazine control; a saw tooth signal being used as the basic timing signal in operating the lamps.

Abstract: A viewing system for an annular projection system, particularly useful to provide a view of a semiconductor wafer on which an image of a integrated circuit mask pattern has been projected using an annular field projection system in which the field of view can be as large as the large dimension of that portion of the annular region subtended by the wafer thereby permitting ideal coarse alignment of the mask and wafer. The system further includes means to illuminate the mask and wafer separately and in different colors to thereby simplify the distinction of one from the other in the combined image thus facilitating the alignment task.

Abstract: A film strip projector which is provided with synchronized audio accompaniment. A film strip is framed with respect to a projection aperture by a selectively operable framing device. Once the film strip is initially framed, the film strip is advanced frame by frame by a Geneva type film advance mechanism. The audio accompaniment is carried on a dual track audio tape, one track of which carries the audio message pertinent to a particular frame and the other track of which carries a control signal for the film drive mechanism. All of the operative components of the film transporting mechanisms are mounted on a unitarily molded chassis. The chassis includes features for mounting a set of optics for easy removal and cleaning.

Abstract: In an optical transformation drawing apparatus in which an image is projected by a projector on to a rear face of a projection screen so that a draftsman can trace on the front face of the screen the image transmitted through the screen, both the projection screen and a projector support frame supporting the projector are mounted on a fixed frame to pivot about an axis with the projector support frame and the projector thereon acting as a counterweight for the screen and with the projector support frame arranged parallel to the pivot axis, a mirror being provided to deflect the image from the projector on to the rear face of the screen.

Abstract: A record player including a turntable driven by a motor through a jockey pulley interposed between the turntable rim and a spindle driven by the motor in which the spindle is stepped to provide a number of portions of different diameter and the portions themselves being slightly tapered so that adjustment of the pulley axially of each portion permits a fine adjustment of the speed of rotation of the turntable, and in which the jockey pulley is mounted on a speed change arm which can be moved to move the jockey pulley axially of the spindle by a cam means driven by a manually operable drive element, and wherein a manually operable pitch adjusting member is also provided for rotation about the same axis as the manually operable drive element to cause axial movement of the cam means relative to the drive element and hence of the jockey pulley relative to the spindle to permit fine adjustment of the speed of rotation of the turntable.

Abstract: An optical system for projecting an image of an object, operating between fixed object and image planes. Both the object conjugate and the image conjugate are variable to vary the magnification in the system. This is accomplished without moving the optical axis by means of a first roof mirror on the object side of the lens and a second roof mirror on the image side of the lens. These mirrors each fold the optical axis by 90.degree. and are movable along a locus at 45.degree. to the optical axis to change the object and image distances.

Abstract: A compact imaging apparatus and rear projection display device are described wherein an image of an object is focused on an image area which is displaced and rotated from the object plane. A pair of planar mirrors of predetermined shape are selectively located to fold the image beam from an image device and provide an image of desired orientation on the image area. A compact camera for producing a large image area in a small volume is described and is particularly useful in connection with so-called instantly developed photographic films. A rear projection device is described, having an optical arrangement which confers a high degree of immunity to ambient light. An image beam is projected upwardly against a first mirror, reflected toward a second mirror behind a projection screen, and then reflected forwardly to the projection screen.

Abstract: A group display generator of the type wherein information appearing on the surface of a cathode ray tube is recorded on film and projected in color upon a large viewing screen. The system employs a dry type silver halide film and dry film developing process in cooperation with an image intensifier where the image appearing upon the face of the cathode ray tube is directed to the input of the image intensifier and directed from the output of the intensifier to the surface of the silver halide film in a level of surface brightness intensity equal to or greater than the illumination at the face of the cathode ray tube. The intermittent image intensifier supplies sufficient light intensification to compensate for the low image amplification inherent in the dry type silver halide film. The combination of the image intensifier and dry silver halide film allows compact and mobile group display generator application to areas heretofore inaccessible with prior art wet type film development processes and techniques.

Abstract: A microfiche having one surface embossed or molded to define a multiplicity of small lenses (lensettes) integral with the microfiche. Each micro-image is stored directly below a corresponding lensette, thereby assuring optical distance registry between each micro-image and its projection. Lateral optical registry is also realized. In an embodiment, interlensette surface of the microfiche is made opaque to preclude optical cross-talk.

Abstract: A therapeutic pool system whereby a safer and more comfortable air circulation system is provided.In detail, it comprises a fluid circulation system which circulates the fluid, usually water, from the pool through a skimmer, filter and heater back to the pool. In addition, there is an air circulation system whereby air is taken from above the water in the skimmer, intermixed with the circulating water and returned to the pool to provide a healthful, comfortable experience for people using the pool.

Abstract: A device for the viewing of photo-images and the presentation of sound recordings corresponding to such photo-images, which device may be controlled by the user to provide substantially random access to any photo-image and the sound recording corresponding thereto, is disclosed. A modular construction of such device and its adaptability to either hand-held or projection embodiments is described. A novel tone arm system as well as a novel turntable driving mechanism, a novel disc type record unit and a novel record changing mechanism is disclosed. In addition, a novel stereoscopic system based on the use of two identical views of the field of vision is disclosed and a specific optical system is described. Finally, a method of and means for coordinating a group of photo-images and a group of sound recordings so that selection of a particular photo-image automatically selects the corresponding sound recording is disclosed.

Abstract: An automatic diameter selection device for the pick-up arm of a record player. A sensing pin disposed in the turntable is depressed by records greater than a given diameter and cooperates with abutment members to move a plate between a plurality of locked positions. The plate moves only if, after a record has been placed on the turntable, the sensing pin occupies a position which differs from its previous position.

Abstract: A recording-reproducing system comprising a flexible jacket containing a record disk, a turn table rotating said record disk, an engaging means engaged to one end of said record disk in said jacket, a stopping means for restricting only the movement of said record disk, and a thrust means for transferring said jacket, whereby said record disk can be taken out of said jacket within the reproducing system.

Abstract: The disclosure relates to an ultrafiche carriage assembly for use in an ultrafiche apparatus of the type which projects a magnified image of a selected one of a plurality of film frames on an ultrafiche onto a reference surface. Such ultrafiche readers include a light system and projection system and the present invention herein disclosed provides a carriage assembly allowing vernier control of the position of the film frames between the light and projection systems so that a particular film frame of a known location on the ultrafiche may be selected.

Abstract: A modular design disc receiving apparatus that is utilized as a cartridge holder or output hopper. When utilized as a cartridge holder, push to latch, push to unlatch means position the cartridge for proper disc insertion, thereby readying the apparatus for its function as a cartridge holder. The apparatus comprises means for counting and giving visual indication of the number of discs ejected into the cartridge, and means for sensing a cartridge full situation, thereby enabling associated feeding systems, and, accordingly, preventing jamming of the apparatus. In addition, the apparatus is utilized as a disc output hopper, in the situation where a cartridge is not being used. When used, as aforementioned, the capacity of the apparatus is approximately doubled. Discs ejected into the apparatus are neatly stacked so that they protrude from the front of the apparatus where they can be seen and easily removed.

Abstract: A device for performing friction and wear tests inside a closed high-pressure autoclave under additional surrounding high pressure adjustable from the outside, wherein a test element arranged inside the autoclave is rotated by means of a driving shaft passed in a pressure-tight manner through the wall of the autoclave into the latter, a contact pressure in the form of an additional unidirectional load is exerted on the test element by means of a unit arranged inside the autoclave, and both the contact pressure and the torsional moment acting on the test element are determined and indicated outside the autoclave.