Abstract: The present invention provides a method, which can be operated continuously and has a wide scope of application, for destructing part of fines in slurry in a crystallizer to obtain large crystals having high purity and large crystal size, characterized in that first and second filters are installed in the crystallizer, a part of slurry containing only fines of size smaller than the fines cut size is drawn from the crystallizer, through the first filter in the crystallizer to a fines destruction loop for destructing the fines and then to the crystallizer through the second filter in the crystallizer by using a circulating pump. The two filters are switched over at regular interval and washed with each other's effluent to ensure the cintinuous operation of the above process.The present invention also provides a method for preparing crystalline bisphenol A/phenol adduct and bisphenol A with high purity and large crystal size.

Abstract: A rotary regenerative air preheater having a rotor mounted to a central rotor post for rotation within a surrounding housing whereby heat absorbent material carried in the rotor is alternately exposed to a flow of heating gas and a gas to be heated. Upper and lower rotor post headers provide means for mounting diaphragms, which divide the rotor into compartments, to the rotor post. The upper rotor post header includes an interior opening for receiving the rotor and an outer peripheral portion having a plurality of circumferentially spaced T-shaped slots. The upper portion of the inboard end of each diaphragm defines a box-shaped lug which is received in one of the slots. Shoulders defined by the lug engage shoulders defined by the slots to prevent radial movement of the diaphragm. The lower rotor post header is mounted to the rotor and includes a radially extending lower portion that defines a shelf.

Abstract: A bistable liquid level indicator has a rotatable, indicia bearing member which is balanced to assume a first position under the influence of gravity. A rotatable fluid responsive actuator is magnetically coupled to the indicia bearing member such that a magnetic force, which varies as a function of the fluid induced position of the actuator, is imposed on the indicia bearing member. At a critical level of the fluid, the imposed magnetic force overcomes the gravitational force and the indicia bearing member moves to a second position.

Abstract: A dual frequency array antenna comprises an upper layer including an array of antennas operating at a first frequency, a first ground layer disposed below the upper layer at a predetermined distance and a dielectric material disposed between the first ground layer and the upper layer. An array of slot radiator apertures are provided in the first ground layer. The apertures are spaced from the array of antennas and radiate at a second frequency. An array of feed lines is disposed at a predetermined distance below the first ground layer with one of the feed lines below each one of the apertures. A second ground plane layer is disposed at a predetermined distance below the array of feed lines. The two frequencies are, for example, from two distinct microwave bands.

Abstract: A mass spectrometer is provided having a plurality of analyzers and including at least one magnetic sector analyzer and, typically, an orthogonal-acceleration time-of-flight mass analyzer. Bypass means are provided so that by switching of the direction of the ion beam, the magnetic sector analyzer may be bypassed and the time-of-flight analyzer used either to analyse the beam of ions from the source or daughter ions produced by fragmentation of that beam.

Abstract: An improved computer-automated control system for a book-binding machine which provides for emergency manual control of the binding machine in the event of failure of the computer-controlled portion of the control system. The improvement includes a manually operated control instrument and a plurality of switchable coupling components associated with the adjusting devices of a book-binding machine. Each of the switchable coupling components is electrically coupled to an associated adjusting device and the computer-automated portion of the control system and is capable of being electrically coupled to the control instrument. Upon coupling of the control instrument to the switchable coupling component, control of the associated adjusting device is switched from the computer-controlled portion of the control system to the control instrument.

Abstract: A warning light is integrated with a fixed position, externally mounted rear-view mirror, the warning light having a housing which forms an aerodynamically contoured extension of the mirror. A light head is received by the housing such that, when the housing is engaged by the rear-view mirror, the light head assembly means generally faces towards the front of the vehicle.

Abstract: Apparatus for rounding the spines of book blocks comprises rounding elements that act on the sides of the book block, the action of these rounding elements being due to a defined rotation and pressure, the rounding elements consisting of rounding segments which are drive-rotated by actuating mechanisms and can be moved vertically to thereby execute rolling movements on the sides of the book block. The vertical movement of said rounding segments are superimposed on their rotation in a manner such as to compensate for the vertical movement of the book block generated as a consequence of the rotation.

Abstract: A warning light assembly includes a pair of simultaneously rotatable light beam generators. The rotation of the output shaft of a single drive motor about a first axis is converted to oscillatory motion of the light beam generators about a pair of spaced, parallel axes by a mechanical drive train which includes an eccentric drive for producing reciprocal linear motion in two opposite directions.

Abstract: Apparatus for casting metals, especially alloys with low melting points, has a melt container which is connected to a mold via a casting line. A standpipe branches off from the casting line in the melt container. The melt is covered by an inert fluid blanket and the level of melt in the melt container is monitored and maintained such that at least a portion of the standpipe is surrounded by the melt. An overflow valve selectively opens or closes an overflow hole in the standpipe, the overflow hole being immersed in the inert fluid, to adjust the level of melt in the casting line.

Abstract: A razor has a razor head and a handle extending from the razor head. The handle defines a chamber holding pressurized shaving cream. A valve, having oppositely positioned flexible valve flaps biased for sealing engagement, selectively permits the emission of the shaving cream from the chamber. A nozzle defining a tube is insertable between the valve flaps for controlled passage of the shaving cream from the chamber.

Abstract: The connecting plate duct assemblies which form the inlet and outlet ducts for a rotary regenerative air preheater have a horizontal flange plate around the periphery. The vertical panels which house the rotor sit on the lower horizontal flange plate and are attached to lower vertical attachment bars extending up from the lower horizontal flange plate. The upper ends of the vertical housing panels are spaced below the upper horizontal flange plate and abut upper vertical attachment bars extending down from the upper horizontal flange plate. The upper ends of the vertical housing panels are welded to these upper vertical attachment bars to hold them in position and to seal the space. Sealing means are provided between the vertical housing panels and the rotor at both the upper and lower ends.

Abstract: A door clip for mounting a door rail to a door stile has a base and pair of rail support arms extending perpendicularly from the base. Each arm defines a generally planar surface portion which contacts the interior surfaces of the side walls of the door rail. Fasteners extend through bores in the base and secure to a mounting plate positioned in the door stile. Each rail support arm defines a longitudinally oriented channel. Rail mounting fasteners extend through the door rail and into the channels.

Abstract: A drive train for transmitting torque produced by a load comprises a planetary gear arrangement mounted concentrically with respect to a tubular shaft. The planetary gear arrangement cooperates with a pair of driven gears which are also coaxial with the tubular shaft, the planetary gear arrangement and the pair of gears being located within an outer housing. The tubular shaft provides an unobstructed, large diameter passage through the drive train, the passage being available for the routing to a load connected to one of the driven gears of movable shafts, conduits or electrical conductors.

Abstract: Smooth planar metal surfaces, usually an aluminum web, intended for a lithographic printing plate, are roughened by brush graining with fine abrasive particles which are hard and dense and have a radial or disk-like configuration such that the abrasive particles are forged into the surface of the metal forming cavities in which the abrasive particles remain embedded. The embedded abrasive particles are dislodged and removed from the cavities by subjecting the web to an anodic treatment employing electrolyte materials and concentrations, temperatures and voltage which will dislodge and remove the particles while retaining the surface texture or morphology of the as-roughened surface. The web is then subjected to a second anodic treatment under conditions which favor oxide formation in order to provide a final anodized product.

Abstract: The invention relates to a process and apparatus for separating gaseous components from pourable media. The main feature of the invention is that regions of under pressure are formed by relative movement between the media and a substantially vane-shaped external surface on a body arranged therein. The gas collecting in the under pressure regions is evacuated through the interior of the body. The body is preferably arranged to rotate, such that at least one inlet on the body at the under pressure region communicates with a gas outlet inside the body to remove the separated gas.

Abstract: A connecting linkage is provided between two structural members which includes a pinned connection to allow rotation of one structural member with respect to the other and which permits adjustment and alignment before locking the device in position without the need for drilling a precisely positioned hole for the pin in the structural member. An oversized hole is formed in one of the structural members and the pin is placed through the hole. A first support plate having pin-sized holes is then placed over each end of the pin followed by a second pair of support plates also having pin-sized holes. The assembly is then moved with respect to the first structural member as permitted by the oversized hole around the pin into a desired position. The second pair of support plates are then welded to the second structural member and the first pair of support plates are welded to the first structural member. If desired, the pin may be welded to the second pair of support plates.

Abstract: The object of the invention is an apparatus for clamping a chipper knife (1) to a rotatable chipper disc (4) or drum so that the back surface (6) of the knife (1) is supported against a knife clamp (2) with a knife spacer (3), and that the knife clamp (2) and knife spacer (3) are movable relative to each other by means of the clamping element (5). The knife clamp (2) is provided with supporting surfaces (11, 12) which the back surface (6) of the knife (1) is adapted to lean against by at least two spaced-apart surfaces (11', 12'). The knife spacer element (3) includes a supporting surface (13) which is adapted to subject a front surface (14) of the knife (1) to a force acting between said supporting surfaces (11, 12) of the knife clamp (2) for bending the knife (1) between said supporting surfaces (11, 12) of the knife clamp (2) towards the knife clamp (2) so as to generate a compression stress in the free section of a front surface (16) of the knife (1).