Abstract: A paperback book has divider pages positioned at intervals between the pages of reading matter and perforations along its spine at such divider pages so that the book can be separated into one or more sections by tearing the spine along a perforation.

Abstract: A nasal airway in a preferred embodiment includes a tubular housing and an airway tube which in the storage position is received at least partially within the tubular housing and in a second position projects outwardly therefrom. The airway tube may have one or more auxiliary openings disposed between the ends thereof. A first closure may close the end of the tubular housing to which the airway tube may be secured and a second closure may close the other end. Tracheotomy blade means may be associated with the second closure. The multipurpose nasal airway may also be provided with writing equipment such as a reservoir of ink and associated discharge point.

Abstract: The specification discloses stacking of bars and the like. A plurality of stacking cradles are positioned adjacent to a table from which bars are moved transversely to the stacking cradles. Deflector members are selectively movable between a position in which they bridge over the stacking cradle and a position leaving the stacking cradles open. Members are provided for shifting the product in the stacking cradles for alignment of the ends of the product.

Abstract: A process for preparing microcapsules for pressure sensitive manifold paper characterized by emulsifying in a hydrophilic liquid a hydrophobic liquid containing an aromatic isocyanate represented by the formula ##STR1## wherein n is an integer of 1 to 10, an aliphatic isocyanate and an electron donating organic chromogenic material, and forming a polymer at the interface to cover hydrophobic liquid droplets with the polymer.

Abstract: A method is provided for producing ultra fine particles of metal by delivering a molten stream of metal onto a rotating primary annular surface, discharging molten fine droplets from the edge of the primary annular surface against an inclined secondary annular surface surrounding the primary surface at an angle such that the molten droplets striking the secondary surface are sub-divided and discharged from the secondary surface to be cooled and collected as ultra fine particles.

Abstract: A method of processing specimens including securing the specimens to a plurality of slide members and providing a rack member having separators defining a plurality of slide receiving slots. Introducing the slides into the slots and immersing the slides while in the rack member into a bath of photographic emulsion, withdrawing the rack member from the bath and drying the emulsion, exposing the emulsion-covered slides while in the rack and developing the exposed slides. The autoradiography apparatus provides a rack member for holding a multiplicity of specimen-bearing slides with the rack member having a base portion, an upper portion and a connecting portion. The base portion has a plurality of upwardly projecting spaced first separator members defining a series of first slide-receiving slots and the upper portion has a plurality of spaced second separating members defining a series of second slide-receiving slots generally aligned with the first receiving slots.

Abstract: Spent control rods from nuclear reactors are prepared for disposal by cutting off their handle ends and their velocity limiter ends by a cut off saw positioned in a pit underwater. The saw is driven by an air motor which is controlled outside the pit and has its exhaust carried up out of the water through a conduit. The control rods so truncated are packed into shielded casks for transport while the handle ends and velocity limiter ends are left in the pit or alternatively are loaded into separate shielded containers.

Abstract: A task lighting assembly having a task lighting fixture secured in overlying relationship with respect to a work station, a building wall member disposed adjacent to the lighting fixture and adjacent to the work station and the lighting fixture having an upper wall, a front wall depending from the upper wall and an inwardly projecting lower wall projecting from the front wall. At least one light source receiving recess is defined between the walls. A light discharging opening is disposed between the lower wall and the building wall member. The lower wall is of sufficient length so that no significant portion of the light emitted by a light source in the recess will travel directly downwardly to illuminate the work station. The fixture preferably has no lens. The work station is illuminated primarily through reflected radiation. The undersurface of the upper wall preferably has a reflectance of at least about 80 percent. A task lighting fixture suitable for use in the above-described assembly.

Abstract: A simple and inexpensive skeleton frame for a fabricated structure for housing electrical equipment comprises upstanding legs which are arranged at the corners of the frame and which are secured together at the top and bottom of the frame by endless flexible frame metal bands surrounding the legs and maintained in tension by bracing devices positioned between the legs. Each bracing device comprises a central hub, elongate braces extending outwardly from the hub and each engaging a leg, and screw threaded adjustable means for urging the braces outwardly to maintain the endless band under such a tension that the frame is held rigid. The bottom, sides and top of the frame are clad with sheet metal and a hinged door.

Abstract: A lift loader is provided having two drive motors, each of which drives a vehicle wheel through a gearing arrangement located in a separate transmission housing, in which case each transmission housing is designed as a supporting structural component and is flanged at each transmission housing of the assigned drive motor and supports a wheel hub, in which case a closed vehicle frame is formed by the fact that two lateral struts project out from a rear cross bar, which advantageously can be the counterweight, where one of the two transmission housings is attached to each of these lateral struts toward the front, and where the two drive motors, each flanged at one end on a transmission housing, are connected with each other at the opposite ends such that together they form a front cross bar for the frame.

Abstract: An electronic stringed instrument which uses electrical resistance wires as strings to control the frequency of electrically generated sounds. By shorting a string at various points along its length a variable voltage output is obtained and converted into a known frequency. A fretted instrument provides a means to incrementally control the voltage output and a non-fretted type instrument with a conducting fingerboard can provide a means to variably control the voltage output. A separate current source may be provided for each string to facilitate chord playing and a control for the intensity and harmonic content of the signals is provided. An internal power supply and speaker may also be employed to make the instrument readily portable.

Abstract: The specification discloses a method and apparatus for preventing breakdown of a column of foam moving in a vessel wherein a fluid is applied to the interior surface of the vessel walls.

Abstract: A method is provided for substantially eliminating metal condensates on the walls of a vacuum arc melting vessel above a molten metal pool by the step of providing an atmosphere of non-condensible gas in the vessel above the molten metal pool during the melting operation.

Abstract: In a method of rolling tubes in a stretch-reducing rolling mill having a group drive in which the elongation, and therefore the tension is increased by increasing the speed of an auxiliary drive motor relative to that of a main drive motor, the length of the trailing "thickened end", which must be rejected as scrap, is reduced by increasing the elongation from the point in time at which the start of the trailing end portion of the tube reaches the last stand. This trailing end portion is that portion which receives a larger wall thickness than the central portion of the tube as a result of the reduced tension exerted in the trailing end portion of prior art practices. The start of this trailing end portion can be predicted from experience or by rolling a sample tube without subjecting its trailing end portion to the said increased elongation and measuring the wall thickness at the trailing end portion of the sample tube.

Abstract: A method for making armor plate which comprises commencing with a homogeneous metal plate that has been hardened. Then moving the plate into a liquid bath while applying heat to one surface of the plate. The plate is progressively moved into the bath at an angle while the heat is applied at or near the point of intersection of the plate with the bath and on a surface of the plate which is opposite that which is in contact with the bath.

Abstract: A musical instrument is disclosed in which light beams striking a detector produce various tones and the loudness of the sounds produced is dependent upon the intensity of the light beam which can be changed by interrupting the beam or reflecting the light backwards to a detector situated next to the light source. A special amplifier circuit is provided which responds to both the amount of light beam interruption as well as the rapidity of interruption. The invention can be variously embodied in woodwind, string and percussion instruments and can also be used on a stage and controlled by moving dancers or musicians.

Abstract: A drive shifting apparatus for a valve control and the like is provided with a source of power for motor operation, a separate source of power for hand operation and a shifting means shiftable between the hand power and motor power sources. The shifting means may be a spring loaded clutch normally connecting the motor power source with the valve control, a latch means to hold the clutch in the hand power position against the spring pressure and a cam on the motor automatically releasing the latch when the motor is energized.

Abstract: A volatile oil composition for use in metal working comprising a base oil and at least one halogenated hydrocarbon.