Abstract: A flame-retarded polystyrene composition which does not bloom comprising at least about 50 percent (by combined weight of polystyrene, poly[brominated phenylene oxide], and enhancing agent) of high impact polystyrene, from about 9 to about 22 percent (by weight) of poly(brominated phenylene oxide), and from 1 to about 10 percent (by weight) of enhancing agent is disclosed.

Abstract: A compound of the formula ##STR1## wherein a, b, c, d, and n are integers; a is from 1 to 3; b and c are independently selected from the group consisting of 0 and 1; d and n are independently selected from the group consisting of 1 and 2; R.sup.1 and R.sup.4 are independently selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and haloalkyl of 1 to 4 carbon atoms and 1 to 2 halogen atoms; and R.sup.2 and R.sup.3 are independently selected from the group consisting of haloalkyl containing 1 to about 4 carbon atoms and 1 to about 2 halogen atoms selected from the group consisting of chlorine, bromine, and mixtures thereof.The use of this compound with specified amounts of a certain methylated methylol melamine and water allows one to produce an intumescent composition which is substantially superior to prior art intumescent compositions.

Abstract: Highly purified brominated aromatic compounds such as decabromodiphenyl ether, pentabromophenol, and the like may be obtained by grinding the crude brominated product to provide particles predominantly less than about 20 microns in diameter and thereafter heating the crude ground brominated product for a time and at a temperature in order to effect substantial removal of the bromine and hydrogen bromide impurities therefrom. Optionally, the product may be ground a second time after the heating step to optimize product particle size and liberate residual impurities. The foregoing procedure is especially effective where the brominated compound is a thermally stable solid under the conditions of treatment and is substantially free from impurities containing aliphatic and alicyclic hydrocarbon groups.

Abstract: A shelf arrangement is disposed within the vacuum drying chamber of a freeze dryer. The shelf arrangement has a plurality of vertically-movable shelves, flanges of which are positioned within vertically disposed, elongated slots. The slots are located in side plates, which plates maintain upper and lower bracket assemblies in spaced-apart relation. Certain of the slots are provided with stop means for rendering certain of the shelves vertically immovable. Elevating means are provided for raising and lowering the movable shelves.

Abstract: Biofouling in recirculating water systems may be controlled by admixing or otherwise providing 1-bromo-3-chloro-5, 5-dimethylhydantoin ("BCDMH") to the water at a level effective to control biological film-forming organisms and thereafter maintaining the BCDMH concentration at a level sufficient substantially to inhibit regrowth of such organisms.

Abstract: Electronic and logic circuitry for an automatic tonal bass rhythm accompaniment feature and an automatic chord feature in an electronic organ. Automatic bass rhythm accompaniment produces a pattern of notes based upon a tonic note selected by the instrumentalist such that the desired musical effect is produced when the pattern of notes is combined with the notes being played by the instrumentalist. The electronic organ has stored in a memory various rhythm patterns which can be selected by the instrumentalist by closing rhythm switches. Electronic circuitry then causes notes for the selected rhythm pattern or patterns to be played automatically in response to the actuation of a pedal switch or keyswitch. The automatic chord feature of the present invention provides selectively major triad and dominant seventh chords or minor triad and diminished seventh chords automatically in response to the selection of a root note by the instrumentalist.

Abstract: Clear, high-density fluids suitable for use as well completion, packing, and perforation media comprise aqueous solutions of zinc bromide and calcium bromide having densities lying in the range of about 14.5 up to about 18.0 pounds per gallon and measured pH's lying in the range of about 3.5 up to about 6.0. Optionally, such fluids may also comprise calcium chloride and/or a soluble film-forming amine-based corrosion inhibitor. Such fluids under conditions of ordinary use exhibit low corrosion rates and have crystallization points lying well below the range of temperatures under which they are used.

Abstract: A process for the perbromination of phenol and diphenyl ether by brominating the corresponding compound in bromine as the sole reaction medium using metal and metal-containing catalysts at an elevated initial reaction temperature of at least about 35.degree. C., preferably at least about 45.degree. C., substantially enhances reaction productivity without adversely affecting product yield or quality.

Abstract: An arpeggio system, utilizing bipolar digital logic devices in all control and sequencing functions, generates a variety of arpeggio and strum note patterns. A key operated switch enables a NOR logic note gate, or a series of octavely related note gates, and activates a system clock which causes a pulse to be transmitted along a chain of shift registers, one of which corresponds to each note of the organ. If a given note gate has been enabled when its corresponding shift register is pulsed, the note gate is triggered. When a note gate is triggered, the system clock pauses for a preselected interval allowing the signal from a corresponding tone generator to be sounded through an appropriate system of filters and amplifiers. The system clock can cause the shift registers to scan in the up, down, or up and then down directions. An octave priming device can permit the sounding of notes in higher octaves which correspond to notes actually played.

Abstract: A sealing structure capable of various uses and particularly in butterfly valves having a body with a flow passage and a movable valve disc in the flow passage and having a sealing surface. The sealing structure is mounted in the body to engage the disc in the closed position of the latter to provide a high performance (i.e. bubble-tight) seal. The sealing structure includes an annular seal retaining cavity with a slot opening to the flow passage. The structure includes a seal ring of Teflon, PFA or the like retained in the cavity and sealing one axial side of the ring from the other. It also has a tongue-like extension projecting through the slot into the passage and having a seat at its end engageable with the sealing surface of the disc. The seal and cavity structures have shoulders normally (in open position of the valve) abutting each other to seal the interior of the cavity (the abutment occurring from expansion of the seal ring into place in the cavity).

Abstract: Synchronous and conditional inter-program control apparatus in a computer system is structured to temporarily suspend execution of an invoking program and to transfer processor control to an invoked program. Such transfer is initiated by a transfer initiation means which interacts with a function control means of a function control array and provides symbolic identification of an entry point in the invoked program and conditionally continuing the transfer mechanism. The function control means addresses call return elements (CRE's) when it is in an execute mode but transfers processor control back to the invoking program when it is in a by-pass mode. CRE's that are in an available, data-receivable state are chained on an available call return queue (ACQ) and may be removed therefrom and placed on a task dispatching element (TDE) on an as-needed basis through a receive message mechanism.

Abstract: A cement composition comprising cement, a pozzolan material, fine aggregate, air, water, at least one alkali metal constituent selected from the group consisting of sodium, potassium, and lithium ions, and at least one anionic constituent which is capable of forming complexes with ferric ions, is soluble in water, and forms a calcium salt which is also water soluble, wherein the alkali metal constituent is present in an amount up to approximately 4.0 percent by weight, in terms of the equivalent weight of sodium ions, of the pozzolan material; the anionic constituent is present in an amount up to approximately 6.0 percent by weight, in terms of the equivalent weight of chloride ions, of the pozzolan material; and the cement composition is further characterized by: (a) having a solid volume ratio of cement to the pozzolan material within the range of approximately 0.05 to 2.

Abstract: By varying the acidity, solvent polarity, and temperature of the reaction of thiosemicarbazide with ethyl 4-chloroacetoacetate, ethyl 2-amino-6H-1,3,4-thiadiazine-5-acetate hydrochloride, ethyl 2-hydrazinothiazole-4-acetate, and ethyl 2-imino-3-aminothiazoline-4-acetate hydrochloride may be prepared selectively. Further derivatives may be prepared by benzoylation and nitrosation. These compounds have demonstrated utilities as herbicides.

Abstract: Disclosed is an improved high voltage switch operating mechanism which utilizes energy stored in a spiral spring to drive high voltage switches from either the open to the closed position or the closed to the open position. A spiral spring interconnects a rotatably mounted drive lever, which can be rotated to charge the sprial spring, and an output lever, which drives the switch either open or closed when the switch operating mechanism is tripped. A gearbox assembly reduces the torque required to charge the spiral spring when supplied either manually with a crank or electrically through a motor. The output lever is held in the switch-closed or the switch-opened position by improved first or second output lever latch assemblies, respectively, while the drive lever is rotated to charge the spring. Once the spiral spring is charged, first and second main latches engage the drive lever holding it in a spring charged position.

Abstract: Virtual addressing apparatus for implementing a large virtual address in a computer system having narrow data paths, ALU, and local storage register arrays without requiring multiple passes. The virtual addressing apparatus stores the segment portion of a virtual address in a segment register and the offset portion of the virtual address in an offset register. To form a new virtual address, a new offset value is obtained by adding the displacement value given by the instruction in the instruction buffer register to the offset value stored in the offset register. The segment portion of the virtual address does not participate in the arithmetic operation for forming the new virtual address. The segment and offset portions are concatenated to form the new virtual address which is then translated to a main store address. Overflow detection circuitry in the ALU detects if an overflow out of the offset occurs as a result of the ALU operation for obtaining the new offset value.

Abstract: The present invention discloses an improved method for the in situ end point determination of the oxyethylation of phenols. In the present invention, the oxyethylation reactions occur in the presence of catalysts and at temperatures in excess of 100.degree. C. The reaction end point is monitored by continuous measurements of the electrical conductivity of the reaction mixture and the reaction is terminated when a preselected rate of change of conductance is attained.The method of the present invention may be used with complex phenolic systems wherein alkali metal hydroxides, quarternary ammonium salts, or alkali metal alkoxides are used as oxyethylation catalysts.

Abstract: A serialization apparatus for a data processing system wherein access restrictions are automatically enforced: (1) in behalf of individual machine instructions in order to maintain object integrity; and (2) at each user's discretion in order to maintain synchronization among all concurrent users of any given object. Various types of restrictions can be enforced in behalf of both machine instructions and users, allowing concurrent access to objects at various levels where appropriate.

Abstract: A mail box gang apparatus which utilizes the construction of a mail box as an inherent structural component of the gang to achieve uniformity in mail box appearance, greater strength and permanency. The apparatus may include two horizontal rows of mail boxes mounted one upon the other, the boxes being affixed to one another at both the upper and lower portions to form an integral beam type structure of substantial strength. To facilitate such ganging in the manner described, the mail boxes are modified to include a new flagging system which advises the mail man of the presence of outgoing mail. This flag system affixed to the door of the box includes a panel which is merely rotated to disclosed a flag indication and is automatically reset upon opening of the box. In the preferred embodiment, the mail box door is modified to facilitate mounting of the flag and includes a novel latch device together with a pleasing appearance.

Abstract: An apparatus for the treatment of at least one surface of an article conted therein is disclosed. The treatment apparatus comprises a treatment enclosure which includes at least one inlet lock-chamber and at least one outlet lock-chamber with an article transport device extending therebetween. The treatment enclosure includes a solvent dispenser which is positioned with an outlet thereof adjacent the article transport device. Included within the apparatus is a vapor extractor for extracting air-solvent vapors from the treatment enclosure. The vapors extracted from the treatment enclosure are directed through a condenser positioned between the inlet lock-chamber and the outlet lock-chamber. Recycling ducts, communicating with the treatment enclosure and the vapor extractor, are also provided for recycling air, from which the solvent vapors have been substantially removed, toward the inlet of the inlet lock-chamber and the outlet of the outlet lock-chamber.

Abstract: Tagged pointer handling apparatus is provided for implementation in a computer system wherein a tag bit is provided for each word in main storage. This invention provides for the mixing of data and pointers within the same storage space, and provides a capability for checking and verifying the validity of the pointers without affecting the performance or operation of other instructions. Only the tag instructions can set the tag bits ON in main storage; all other instructions store data and set the corresponding tag bits OFF. Thus, if a pointer was modified inadvertently by one of these data handling instructions, the fact that the pointer is untagged is detected and the values in the pointer are treated as invalid when the pointer is used by the Load and Verify Tags instruction.Instructions to load, store, set, move, extract and insert tags are implemented by the tagged pointer handling apparatus.