Abstract: An apparatus is disclosed for winding strips or tubes of plastic film into center-unwindable rolls having a diameter of at least about 3 inches and for unloading the wound rolls without telescoping thereof. Bare expandable winding shafts are provided which comprise a fixed vacuum leaf and a plurality of movable leaves controlled by an elongated air bladder, the contracted diameter being at least about one-quarter inch less than the expanded diameter. Each leaf also has an outer surface having a selected slipperiness toward the film surface.

Abstract: A magazine includes a case for accommodating a strip of recording medium as wound around a tubular core, a support shaft provided in the case and supporting the inner periphery of the core for rendering the medium rotatable, and reverse rotation preventing members permitting forward rotation of the core when the recording medium is paid off from the case and preventing the core from rotating in a winding direction opposite to the forward rotation. Even when the recording medium is subjected at its leading end to an external pushing-in force or tends to be rotated by shaking or vibration during handling, the reverse rotation preventing members restrain the medium from rotating in the opposite direction to prevent the leading end from slipping into the case.

Abstract: A tape transport for a leader block tape cartridge has a threading mechanism including a threader pin for engaging the leader block and extracting it from the cartridge after it has been loaded into the transport adjacent a first end of a tape path. The threading mechanism pulls the leader block along the tape path past a read/write head, and inserts the leader block into a take-up hub adjacent a second end of the tape path during a threading operation. During a rewinding operation, the threading mechanism extracts the leader block from the take-up hub, pulls the leader block past the read/write head and inserts the leader block back into the cartridge. A first guide assembly adjacent the first end of the tape path engages and guides the leader block to ensure proper insertion thereof back into the cartridge during the rewinding operation.

Abstract: In a magnetic tape cassette comprising an upper half housing section with a see-through window, a lower half housing section, a pair of hubs on which a length of magnetic tape is wound and which are rotatably fitted in between the two half housing sections, and a stopper located between one edge of the tape wound on the hubs and the upper half housing section and having pawls engageable with given points of the hubs, the stopper has a flap portion slidable along the inner side of the see-through window and which is exposed when the pawls are engaged with the hubs. The stopper is slidable perpendicularly to the axes of rotation of the hubs. It is colored as classified by the grade, use, or type of the magnetic tape involved. Its exposed area visible through the see-through window is at a maximum when the stopper is engaged with the hubs.

Abstract: A rotary mechanical face seal includes first and second seal face members, the sealing face of one seal face member being urged into engagement with the sealing face of the other seal face member, said seal face members being such that when subjected to temperature gradients due to the generation of heat at the sealing faces, the sealing faces will remain substantially parallel in spite of any thermal distortion of the seal face members.

Abstract: This invention relates to a device for the sealed connection of two pipe elements, wherein it comprises in projection on the pipe elements two members capable of being moved towards each other by at least one clamping means and of which the contiguous faces defined opposite grooves for housing a crushable seal comprising an inner toric ring of which the convexity is directed outwardly and an outer toric ring of which the convexity is directed inwardly. According to the invention, the seal is constituted solely by such rings, which abut on each other opposite the annular crests of their convex parts and the circular groove of each connecting member presents convergent bearing surfaces pressing the edges of said rings.

Abstract: The invention relates to a seal, consisting of an elastomer shaped ring, which is to be pushed onto a cylindrical circumferential surface and supports itself on the latter by a radially acting sealing surface, with an embedded inner ring, consisting of a chamber portion, likewise to be pushed onto the circumferential surface, with a sealing chamber, which surrounds the shaped ring, is undersized relative to the outer contour of the shaped ring and conically widens from the clear inside diameter of the chamber portion toward one face of the chamber portion, and consisting of fastening means which fix the chamber portion with respect to a second surface resting against the face of the chamber portion. For sealing off a cylindrical surface with respect to a second surface standing vertically on the cylindrical axis, it is proposed that the shaped ring have an axially acting sealing surface, preferably lying at right angles to the radially acting sealing surface, for contact with the second surface.

Abstract: A method of making and of reading markers at control positions on a length of magnetic tape having light-impeding coatings on opposed sides of a transparent tape substrate. Markers are recorded by directing focused beams to control positions along longitudinal areas of the magnetic tape. The beams have an energy sufficient to ablate the coatings, but to leave the tape substrate intact. Raster scanning of the control position provides rectangular markers at prescribed positions. An optical splitting element is used in reading the markers. The element is a heptagonal prism which receives light from a tape drive and forms two parallel, spaced apart beams which are first directed at separate elevations through the markers in the magnetic tape, then converged to the light sensors in the drive. Preferably the optical path through the prism is a path formed by folding a hexagonal prism, with the fold being a reflective surface.

Abstract: The present invention relates to a bearing device particularly intended to be used in the type of poker vibrator whose rotor shaft (2) exhibits an eccentric arranged between two needle roller bearings (3,4). Besides being carried in these bearings, the rotor shaft (2) is also carried in a deep-groove ball bearing (5) intended to take up any axial forces acting on the rotor shaft. In order to relieve it from radial forces, the deep-groove bearings (5) is mounted in accordance with this invention with a positive clearance in both the radial and axial directions. The radial clearance can thereby be provided either between the deep-groove ball bearing's outer race (6) and the bearing sleeve (7) or between its inner race (8) and the rotor shaft (2). The purpose of the axial clearance is to permit the radial movement of the deep-groove ball bearing (5) that is the purpose of the radial clearance.

Abstract: A vertical holder for perforated paper toweling or other material, having a rectangular back support, base and top rod support, removable large square paper roll rod, having a magnet in its base end, a side support, also used as a grasping area for moving the holder, a tension piece, to aid the separation of sheet material, and non-skid material covering the underneath surface of the base rod support. The holder is mountable vertically or horizontally on a wall, or horizontally underneath a counter or cabinet.

Abstract: A car-shaped video tape rewinder having a shape of a model car on whose chassis a tape rewinding system is mounted. A case body is raised up or down at the front for receiving a video tape to be rewound and for storing a cleaning tape. The rewinding system includes a motor and a set of gears engaging one another for revolving a main winding head and is mounted on a movable base elevated a little above the chassis by a positioning post. The movable base can be moved by the motor to open the case body and to cut off the electric power at the moment when rewinding has been finished. The rewinder is shaped to be decorated.

Abstract: The strip decoiler of the invention has a dancer arm in a vertical plane which sets the speed of the decoiler turntable. The lower end of the dancer arm mounts an adjustable connection which in turn supports a spool shaft carrying a support spool. The spool shaft can be swiveled about so that the spool can support the decoiling strip evenly all across its width. The shaft is quickly and easily adjustable for use with clockwise or counterclockwise uncoiling.

Abstract: A holder, e.g., for rolls of paper is configured such as to dispense a paper web from the holder via a web braking element (14, 15, 17), which may have alternative forms. The web braking (14, 15, 17) prevents paper from being dispensed uncontrollably from the holder as a result of inertia forces or some other circumstance. The holder is comprised preferably of two major parts, namely a back plate (1) and a causing (2), which houses the roll (4) and roll support means (8, 9). When the roll (4) is placed horizontally in the casing the roll is supported on two shafts (8). When the roll extends vertically in the casing, it is supported by a shelf (9). The shelf has formed therein an aperture (10) through which the paper web passes.

Abstract: A two roll sheet material dispenser cabinet for paper towelling and the like has an automatic transfer system from one roll to the other when one roll is exhausted. The dispenser feeds sheet material sequentially and comprises a cabinet with first and second roll stations and a feed mechanism to feed sheet material from the rolls to a dispensing opening. The feed mechanism has a gripping roller, and a pressure plate pressed against the roller to provide a feed passage between the roller and plate, a feed mechanism rotates the gripping roller, the sheet material from one roll station is retained in the feed passage while sheet material from the other roll station is dispensed. When the sheet material from one roll station is exhausted, the feed mechanism automatically dispenses sheet material from the other station.

Abstract: A cassette reel for use with a video cassette having an upper flange formed of a transparent plate and a plurality of indicators for a tape volume, each of the indicators being formed of a plurality of crimped portions provided on the outer surface of the upper flange in the diametrical direction thereof, wherein the innermost crimped portions of the plurality of indicators are made higher than other crimped portions, so that when the cassette reels are stacked up and transported for the assembly, the transparent portion of the cassette reel can be protected from being damaged and the commercial value of the cassette reel can be increased without being designed awkwardly.

Abstract: A rigid link is provided between a plot medium (14) and a position transducer (50) so that accurate plot medium advance measurement can be attained. The device (30) comprises a movable carriage (42) and an arm-like extension (38) that juts out from the carriage to the plot medium. A friction hold is made between the extension arm and the plot medium by applying a force to the extension arm normal to the plot medium by means of an electromagnet (33) which includes a coil (34), the extension arm serving as the armature. The electromagnet is located beneath the platen (12) which supports the medium on a base (32) which also supports the carriage.With the electromagnet activated, the extension arm is held against the plot medium. As the plot medium is advanced by a plot medium drive system (20), the extension arm and carriage are pulled along. Plot medium advance is stopped when the proper advance distance has been sensed by the position transducer.

Abstract: The present invention relates to a tape cassette suitable for VTRs which allows mounting of two kinds of tape cassettes whose outer dimensions are different from each other. The tape cassette has a front cover for covering a magnetic tape stretched in the front of a cassette body and a rear cover for covering the rear side of the magnetic tape, and the front edge of the upper surface of the rear cover is arranged to be normal to the upper surface of the cassette body so as to prevent error-insertion and to allow simple and sure insertion into a VTR and provide an excellent air-tightness, resulting in the prevention of image deterioration due to increase of drop out caused by entering of dust and so on.

Abstract: The device is featured by a combination of: lateral slideways (5d-5e) taking with backlash, rods (26d-26e) integral with supporting means (26) for the rolls; articulated supporting means (10) to suspend the stand-by roll (R2) in a waiting position by its rods (26d-26e); articulated means (8) for hooking and taking pressing rods (26d-26e) of the roll in use (R1) on a drum (1) for driving of the said roll and cutting manually pulled web; a first connecting rod (12) between means (8) and (10) is mounted so that the said means can be separated or brought together by crossing each other; a second connecting rod (18) hinged with substantial backlash on the hooking means (8), and also articulating on the end of a lock (19) retaining the stand-by roll (R2); safety means locking at least in one rotation direction, the drum (1) during use or refilling.

Abstract: A toilet paper case comprises a U-shaped housing, a curved cover plate hinged to the housing and a shaft for carrying a reel of toilet paper. The curved cover plate is provided with a forked end which has an inner toothed edge and an outer toothed edge. The inner toothed edge may be an edge with a series of sharp teeth, needles, or bumps or a rough edge face to engage with the paper so as to limit the unreeling of the paper, and the outer toothed edge includes sharp teeth to cut the paper. The cover plate is normally biased to an open position and a tongue-and-hole engagement means is provided to lock the cover plate in a closed position.

Abstract: A magnetic tape having an improved mistake erasure preventing device. A cylindrical body is rotatably mounted in a rear corner of the body of the cassette. The rotational axis of the cylindrical body is arranged in any of the directions of thickness, width and length of the cassette body. The cylindrical body has portions colored with conspicuous and inconspicuous colors corresponding to recordable and unrecordable states of the cassette and a hole which is aligned with a hole in the cassette body in one rotational position of the cylindrical body through which a detector of the recording/playback apparatus is insertable to detect the recordable state of the cassette. Holes are provided in the rear and side walls of the cassette body through which the colored portions of the cylindrical body are observable to visually determine the recordable state of the cassette.