Abstract: Described are novel derivatives of seldomycin factor 5 (XK-88-5) and particularly 3'-deoxyseldomycin factor 5, which exhibit improved activity against gram-positive and gram-negative bacteria resistant to aminoglycoside antibiotics, and a method of preparing them.

Abstract: This disclosure describes benzanthracene-5,12(or 7,12)-dicarboxaldehyde-bis-hydrazones and the 5,12(or 7,12)-dihydrobenzanthracene-5,12(or 7,12)-dicarboxaldehyde-bis-hydrazones useful as antibacterial agents, for inhibiting the growth of transplanted mouse tumors, and for inducing the regression and/or pallation of leukemia and related cancers.

Abstract: 7-[.beta.-Aminoacylamino]-3-substituted-3-cephem-4-carboxylic acid derivatives of the formula: ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, lower alkenyl, aryl or a heterocyclic group,R.sub.2 is hydrogen or lower alkyl, orR.sub.1 and R.sub.2 mean, taken together with the adjacent carbon atoms, cycloalkyl or cycloalkenyl,R.sub.3 is hydrogen, lower alkylthio or a hetero cyclic-thio group, andM is hydrogen or a nontoxic, pharmaceutically acceptable cation,processes for the preparation of the same and composition thereof. These compounds are useful as antibacterial agents.

Abstract: A new process for preparing oxazine ring compounds comprises cyclization of an azetidinone-1-hydroxyacetate in the presence of a proton source.

Abstract: Unreacted urea and/or biuret contaminants in a cyanuric acid-inert solvent reaction product are removed by distilling the solvent therefrom at a temperature of from about 150.degree. C. to about 250.degree. C. and at a pressure of from about 70 to about 170 mm. of Hg. A distillate of said solvent containing the urea, biuret and a cyanuric acid reaction product is collected.

Abstract: Halogen-containing s-triazine compounds having two or more s-triazine rings which are remarkably useful as flame retardants are disclosed.The compounds can be produced by reacting cyanuric chloride with a specific phenol and a specific bisphenol in the presence of a base in a solvent.

Abstract: This invention relates to the preparation of pyridyl-4-phosphonates by reacting phosphite ester salts with pyridines which are N-substituted with sterically hindering or "bulky" groups such as "bulky" phenyl groups, for example trityl, .phi..sub.3 C-.

Abstract: 3-Aryloxy-2-pyridinecarbonitrile 1-oxide compounds, which are useful as pharmacological agents, especially as agents for the reversal of amnesia, are disclosed. The compounds can be produced by oxidizing a 3-aryloxy-2-pyridinecarbonitrile.

Abstract: Esters of imidazolidinedione-based triepoxides are especially useful in coating compositions having a low organic solvent content. The esters have the formula: ##STR1## wherein R and R' are independently hydrogen or hydrocarbon groups having from 1 to 8 carbon atoms, one X is hydrogen, one Y is hydrogen, one Z is hydrogen and the other X, Y and Z are ##STR2## where the R" groups are independently hydrocarbon groups having from 1 to 17 carbon atoms.

Abstract: A process for producing optically active 16-substituted prostaglandins and new 16-substituted prostaglandins produced thereby which are useful as cardiovascular agents and as agents for inducing labor in pregnant females and for the termination of pregnancy.

Abstract: Residue acrylate esters of low color are produced by (a) pretreating an organic diol such as 3'-hydroxy-2',2'-dimethylpropyl 3-hydroxy-2,2-dimethylpropionate with triphenyl phosphite and (b) esterifying the pretreated organic diol by reacting it with acrylic or methacrylic acid.

Abstract: Low color residue acrylate esters are produced by reacting an organic polyol such as neopentyl glycol, pentaerythritol, or 3'-hydroxy-2',2'-dimethylpropyl 3-hydroxy-2,2-dimethylpropionate with acrylic or methacrylic acid in contact with a lower alkoxy substituted phenolic or alkylated alkoxyphenolic polymerization inhibitor at a critical low reaction temperature of from 20.degree. C. to 80.degree. C.

Abstract: Mono- and poly-ethylene glycol dialkyl ethers IR.sup.1 --O--(--CH.sub.2 --CH.sub.2 --O--).sub.n --R.sup.2where R.sup.1 is C.sub.1 -C.sub.4 -alkyl, R.sup.2 is C.sub.3 -C.sub.5 -alkyl and n is from 1 to 100, are prepared by reacting monoalkyl ethers IIR.sup.1 --O--(--CH.sub.2 --CH.sub.2 --O--).sub.n --Hwith a C.sub.3 -C.sub.5 -olefin III in the presence of an acid ion exchanger at from 1 to 200 bar and from 40.degree. to 150.degree. C., the reaction being started at from 100.degree. to 150.degree. C. and the temperature then being lowered, in at least two approximately equal steps, to from 40.degree. to 80.degree. C., the temperature being dropped in each case to the next-lower level when the conversion per unit time no longer changes significantly.

Abstract: Polymerization of ethylene or .alpha.-olefins using a catalyst comprising a titanium component obtained by copulverizing the starting titanium component of Ziegler catalysts and organoaluminum compound with a small amount of ethylene or .alpha.-olefins, and an organoaluminum component. The titanium catalyst component can be modified by subjecting the copulverized titanium component to a contact with an inert organic solvent or its mixture with a modifier (1) an oxygen-, sulphur-, phosphor-, nitrogen- or silicon- containing organic compound, (2) a combination of such an organic compound and an aluminum halide, (3) an organoaluminum compound or (4) a Lewis acid.

Abstract: 1,5-Hexadiene is cyclized to cyclohexene by contacting 1,5-hexadiene with a mixture of a first catalyst selected from the group consisting of chromium oxides, chromium chlorides, chromium bromides, molybdenum oxides, molybdenum chlorides, molybdenum bromides, tungsten oxides, tungsten chlorides, tungsten bromides, iron oxides, cobalt oxides, nickel oxides, elemental sulfur, SiO.sub.2, Al.sub.2 O.sub.3, vanadium metal, vanadium oxides, VOF.sub.3, and mixtures thereof, and a second catalyst selected from a tin (IV) halide and mixtures thereof.

Abstract: An electrical lead for cryogenic devices wherein a perforated conductive ribbon is folded in serpentine folds and fitted within an insulated vent. Boil-off gas is passed through the perforations in a heat exchange relationship with said conductive ribbon.

Abstract: The present invention provides an apertured circuit board having self-locking terminals which partially cover at least some of the apertures. The terminals, which are integral extensions of the circuit pathways, are adhesively anchored to the circuit board at the terminal peripheries and are covered in part by a dielectric overlay. The latter also provides environmental protection and electrical insulation to the circuit conductive pathways. A particular feature and advantage of the invention resides in the provision of an integral tie-down shoulder on each terminal for capturing by the dielectric overlay. The circuit board and integral sockets may be formed by photoimaging and chemical resist techniques.

Abstract: A stress-relieving material for the surface of an insulated electrical conductor consists essentially of a cold-flowable, low viscosity, corona-resistant elastomer containing from about 350 to about 600 parts by weight per hundred of elastomer of a semiconductor material and up to about 10 parts per hundred of elastomer of processing aids.

Abstract: This invention provides a tetrafluoroethylene polymer in a porous form which has an amorphous content exceeding about 5% and which has a micro-structure characterized by nodes interconnected by fibrils. The material has high porosity and high strength. It can be used to produce all kinds of shaped articles such as films, tubes, rods, and continuous filaments. Laminations can be employed and impregnation and bonding can readily be used to produce a large variety of articles. Compressed articles of very high strength can also be produced from these porous forms.

Abstract: A high frequency coaxial cable suitable for aerial and ultra-high-frequency lines of the type having a metal internal conductor, a plastic dielectric concentrically surrounding the internal conductor, an external conductor surrounding the dielectric and comprising a metal wire mesh and a plastic foil strip metallized on at least one side, and a plastic sheath enveloping the external conductor as an external protective cover, wherein the wires of the wire mesh are arranged in net-like configuration to define an open wire mesh enclosing the dielectric and the plastic foil strip is applied on the wire mesh in helical edgewise overlapping windings with its metallized side facing the wire mesh and is pressed into each single mesh opening of the wire mesh in form of a generally trough-like dent or dimple thereby short-circuiting each single mesh opening of the wire mesh.

Abstract: 1. A synchronous binary cryptographic system responsive to an input synchronous telegraph signal comprising means for generating timing pulses of substantially fixed, predetermined frequency, means for generating a synchronous binary cryptographic key in synchronism with timing pulses applied thereto by said means for generating timing pulses, switch means actuated by a predetermined input signal sequence for applying the timing pulses to said means for generating the binary cryptographic key, said cryptographic key generating means being continuously responsive to said timing pulses during operation of the system and means for combining said input signal with the cryptographic key.

Abstract: 2. An apparatus for producing a substantially noncyclic sequence of binary electric values, including a driving gear, a plurality of driven gears associated with said driving gear, each of said driven gears having a pattern disc carried thereby, each said disc having a plurality of radial slots in its periphery, means for utilizing the slots of each said disc to produce a sequence of binary electric values, means for substantially combining pairs of sequences so produced, value by value, to produce a lesser number of new sequences of binary electric values, and means for combining said new sequences in pairs, value by value.

Abstract: A full duplex, high-speed data link comprising identical modules at each site for communication over coaxial cables, each module having a DFM transmitter with an FIFO data buffer for data from a digital system to be transmitted over a cable and a receiver with an FIFO data buffer for data received for a digital system at the other end of the cable. Data words are preceded by a sync word which enables the receiver. Every word transmitted, including the sync word is stored in the FIFO data buffer. This arrangement using FIFO buffers allows for asynchronous transmission of data with receipt of the data beginning with the very first bit of the sync word.

Abstract: An integrated, self-contained stereophonic sound recording and reproduction system housed within a console having a front desk-like component and a rear storage component. The desk-like component includes a pair of spaced-apart speaker cabinets, each containing a speaker and supporting a horizontal work table on which spaced turntables are mounted. A support panel extending generally upward rearwardly of the work table mounts a plurality of operatively connected component parts of the system, including a microphone, a record/play 8-track tape deck, a record/play cassette deck, an amplifier, a mixer and volume control means. The storage component of the console includes the support means, and provides compartments for storage and for housing the electrical system for the functional operation of the apparatus.

Abstract: A voice detector circuit including a slew-rate limited amplifier at the input thereof so as to reduce the interference with the voice detection process caused by impulse noise. The slew-rate limited amplifier is essentially transparent to audio signals, while providing severe attenuation of impulse noise components. The actual determination of the voice content of the audio signal is provided by comparing the average syllabic-rate content of the impulse noise limited, audio signal with the peak noise content thereof. Additionally, a logarithmic amplifier is included for the purpose of optimizing the separation of the syllabic-rate envelope from the audio signal.

Abstract: To produce a signal simulating the characteristics of the average human voice, a basic periodic waveform with generally sinusoidal sections separated by level sections is passed through a first filter for substantially equalizing its frequency components and is then shaped in a second filter whose transfer function approximates that of the vocal tract in a frequency band of 0 to 4 kHz. The basic waveform fed to the first filter may be modulated in amplitude and/or recurrence period by a pseudorandom signal from an ancillary generator.

Abstract: A telephone and data network for mobile subscribers comprises radio concentrators locally distributed in the overall area of a radio network which can communicate via radio with the mobile subscribers and comprises radio exchange offices associated with one or more concentrators connected to the public telephone system and, if applicable, for the purpose of data transmission between mobile subscribers and subscribers to the public data network to the teleprinter and data network.

Abstract: A semiautonomous digit collection and call state detection subsystem is provided for use in a time division switching system such as a PBX. Each active (call serving) system port circuit applies a hook state signal to a specially provided bus during each occurrence of the time slot to which the port circuit is assigned. The subsystem's logic analyzes these hook state signals to identify certain predetermined call states and to count dial pulses. Output messages representing identified call states and dialed digits are made available to the switching system under control of a system scanner.

Abstract: Two time division multiplex switches connected to the ends of a time-division multiplex bus are controlled so that they are closed during a periodically repeated time interval. Connected to the terminals of each two-wire line circuit is a capacitor and a switch, which is synchronously controlled with the time-division multiplex switches so that during each time interval the capacitor is charged to a voltage present on the time-division multiplex bus and that during the successive time intervals the discharge time constant of the capacitor is so long that the voltage of the electrodes of the capacitor remains substantially constant. The voltage is connected across the impedance of the corresponding two-wire line circuit.

Abstract: In a time division multiplex network the channel assignment is controlled by assigning each channel, in a channel-by-channel sequence, to each subscriber pair that are communicating or wish to communicate. The subscriber address-data of the addressee or the addressor of each so-assigned channel is stored in a circulating read/write memory with a reset word stored in a memory location following the last memory location containing subscriber address-data. The memory locations are addressed in a successive manner in response to an incrementing clock count and the subscriber address-data, as they are read out from the successively addressed memory locations, are used to provide gating pulses to the respective subscriber modulator/demodulators, and the reset word, when it is read out, resets the memory to repeat the memory read-out cycle.

Abstract: In a time division multiplex network the channel assignment is controlled by assigning each channel, in a channel-by-channel sequence, to each subscriber pair that are communicating or wish to communicate. The subscriber address-data for the addressee and the addressor of each so-assigned channel are stored, respectively, in corresponding address locations of a transmission side circulating read/write memory and a receiving side circulating read/write memory. A reset word is stored in either the receiving side or the transmission side memory in a memory location following the last memory location containing subscriber address-data. The corresponding memory locations on the transmitting and receiving sides are read out in response to counter outputs and the subscriber address-data of each so-assigned channel are used to provide synchronous gating pulses to the respective modulation/demodulation units of the addressee and the addressor of each channel to establish communication therebetween.

Abstract: A voice-protected, frequency-selective signal receiver for signals which consist of several simultaneously occurring individual frequencies, includes circuits for converting the received analog sum signal into a beat pulse pattern of positive and negative pulses of equal amplitude. The time interval between two pulses of identical operational signal and identical duration is determined, since this time interval corresponds to the duration of the sum signal and thus represents a clear criterion for the signal to be received. The signal receiver is utilized to advantage in multi-frequency code receivers in telecommunication systems, particularly telephone systems.

Abstract: A telephone set for optical fibers lines having a coupler for directing a first part of the light received from the input optical fiber on a photo-cell and a second part of this light on a microphone modulating this second part without electrical intermediate apparatus, the photo-cell feed alternately a bell or a receiver, and the light modulated by the microphone is directed via a dialling system on the output optical fiber.

Abstract: A device for fusing and fixing a toner image on a carrier in an electromagnetic radiation field, utilizing a microwave power transmitter connected to a microwave generator. The transmitter has a plurality of discrete transmitting elements coupled in parallel to the microwave generator and arranged in rows transverse to the direction of carrier travel. The elements are spaced apart within the rows and the rows are offset from one to the next such that uniform energy density for fusing and fixing of the toner image is radiated across the web width of the carrier.

Abstract: A welding machine for welding the longitudinal seams in wheel rim blanks which have been rolled into cylinders with the longitudinal edges of each blank forming a longitudinal gap includes a pair of clamping assemblies each having an inside member and an outside member for engaging the inner and outer surfaces, respectively, of the rim blank adjacent the longitudinal edges thereof on opposite sides of the longitudinal gap so as to align the longitudinal edges with each other. At least one of the clamping assemblies is movable relative to the other clamping assembly in a direction transverse to the longitudinal gap so as to permit the longitudinal edges of the rim blank to be pressed against each other. The longitudinal edges of the blank are pressed together in the transverse direction to close the gap and hold the longitudinal edges together during the welding thereof.

Abstract: A welded lap joint is made in sheet metal panels by folding over the margin of one panel to form a U-shaped section and to crimp within the U-section a sheet metal spacer strip thereby producing a three layer configuration. The margin of a second panel is formed into an offset by an amount equal to the thickness of the three layers of the U-shaped section of the first panel. The offset margin of the second panel is spot welded to the bent over margin of the first panel using a conventional welding electrode bearing against the margin of the second panel and an electrode of large load distributing area contacting the top surface of the first panel so that the weld nugget formed between the margins of the two panels is isolated by the spacer from the surface of the first panel to avoid weld marking of the surface. The resultant product comprises first and second panels in the same plane and separated by a very small crevice. The crevice, if desired, may be filled with a filler material such as a plastisol.

Abstract: A continuous seam weldment is established between moving strips of sheet material by forming a converging Vee geometry between the moving strips, applying force at the point of convergence and directing a laser beam into the convergence Vee. The laser beam should be focused at a focal point lying only in a narrow range from essentially at the point of convergence to a location downstream thereof.

Abstract: A conventional plasma arc cutting torch in which the plasma gas passageway of a cutting tip is flared about 90 degrees outwardly, the cutting torch angle-to-work is about 45 degrees, the torch stand-off from the work is about 3/16 inch, and the torch travel speed is about 60 inches/minute to obtain metal preparation of consistent width and depth dependent on the work metal and its thickness. Changes in these characteristics, when limited to established parameters, varies the width and depth of the resulting metal preparation which remains constant for each combination of changes.

Abstract: A method of multi-pass arc welding with a consumable electrode in a protective atmosphere for welding heavy-gauge metal with narrow grooving, wherein, according to the invention the initial electrode extension is adjusted to be greater than the depth of grooving of welded joint, a current supply conductor which supports the consumable electrode passing therethrough is placed in a permanent position above the welded joint, and the welding is conducted with the length of extension of consumable electrode decreasing upon each pass, the voltage applied to the current supply conductor, rate of feed of the consumable electrode and welding speed being reduced with the decrease in the length of extension of the consumable electrode.

Abstract: Apparatus for use in the control of arc welding, especially the automatic ntrol of consumable electrode arc welding employs a technique of reflecting an ultrasonic pulse from that end of a strip of weld filler material which is melting into the weldpool. The time taken from transmission to return of the ultrasonic pulse is measured to provide a measure of the length of filler material projecting beyond the welding torch, which can then be used eg to facilitate automatic control of the welding process. Apparatus using magnetrostrictive and or magnetoelastic methods of ultrasonic pulse transmission and reception are described. Also apparatus using a piezo-electric method for pulse transmission and reception is described which is especially useful for a non-ferromagnetic weld filler strip.

Abstract: An automatic control for egg cookers, baby bottle warmer, etc. is designed around a conventional slide switch of the type normally biased to the open position. Manually actuated means are provided to move the slide switch to its ON position, whereupon a mechanical latch automatically latches onto the knob of the slide switch to hold it in its ON position. When the cooking has been completed, a bi-metal releases the latch and permits the biasing means to open the switch and terminate the heating.

Abstract: In an illustrated embodiment a behind-the-ear hearing aid includes a microphone, an amplifier-low pass filter circuit, an analog to digital converter, a digital integrated circuit arithmetic and logic unit for implementing a n-th order transfer function in the Z domain, a digital to analog converter and an output transducer, for producing the desired sound response. A memory multiplexer is provided for loading of the multiplier coefficients necessary to adapt the transfer function circuit to essentially any class of hearing deficiency into an erasable programmable read only memory (EPROM). The structure is such that the coefficient memory may be loaded after the standard universal hearing aid has been completely assembled, and indeed the hearing aid may be reprogrammed as needed after a period of use, essentially without disassembly.

Abstract: Error and condition messages are transmitted from unmanned telecommunication facilities to a central exchange having a maintenance control station. In order to safeguard this interference data alarm system against interferences in the secondary station and in the telephone network, the transmitting test unit is inserted in several lines used for normal telecommunications traffic, said lines leading to the maintenance control station. In order to transmit the messages, any one of these lines can be automatically selected for maintenance purposes by the transmitting test unit, whereupon a connection to the maintenance control station is automatically established and the necessary data sent to such station. A data dialog for error analysis is possible.

Abstract: A remote locating system for remote locating the pairs of regenerative repeaters of a bidirectional data transmission line which is interconnected between a monotoring station and a monitored station. The monitoring station comprises a first low frequency generator which generates a first low frequency signal on the forward line channel which is continuously transmitted in the forward direction from the monitoring station to the monotored station in response to the fault detection on the line and a second low frequency generator which generates a second low frequency signal on the backward line channel which is transmitted in the forward direction after the transmission beginning of the first signal. The second signal is modulated by successive pulses, each of which identifies a regenerative repeater pair.

Abstract: A coaxial switch capable of operating in a vacuum with high RF power in the 1.2 GHz range without "multipactor" breakdown, and without relying on pressurization with an inert gas, which requires a hermetic seal, is achieved by completely surrounding the RF carrying conductors of the switch with a high grade solid dielectric, thus eliminating any gaps in which electrons can accelerate.

Abstract: A printed circuit contact of the type for attachment to a control device such as a rotary switch and a method for forming the printed circuit contact, the printed circuit contact comprising an elongated rigid tail resistant to bending and an integrally connected spring clip comprised of a pair of resilient jaws, the jaws being formed from material having a thickness less than the thickness of the tail and wherein the jaws and the tail are formed from a single piece of material. The method of forming the printed circuit contact includes milling a longitudinal groove in one surface of a strip of sheet stock so that a portion of the sheet stock is substantially thinner than the remainder. The sheet stock is then stamped and subjected to bending operations such that the thinner milled portion of the sheet stock is employed to form the jaws of the clip and the thicker portion of the stock forms the tail.

Abstract: An integrated combination pedestrian sign and push button is provided for use particularly with respect to the mounting of pedestrian actuated switches for controlling traffic lights. A saddle is formed with a semi-cylindrical, longitudinally extending, concave rear face conforming to the contour of a cylindrical post to which the unit is normally mounted and a front face formed with raised letters presenting pedestrian information. The upper and lower ends of the saddle are formed wtih arcuate grooves on the front face thereof for engagement by metal banding straps employed to secure the saddle to an appropriate post. A manually operated push button switch for pedestrians is mounted to the lower front face of the saddle for connection with traffic signal control circuits.

Abstract: An electrical switch including a fixed contact, a movable contact and means for moving the movable contact into and out of engagement with the fixed contact. A first legend indicative of one of the operative states of the switch is carried by a fixed part of the switch and a second legend indicative of the other operative state of the switch is carried by a part movable relative to the fixed part. The movable part is movable between a position wherein the first legend is revealed and the second legend is obscured and a position wherein the movable part obscures the first legend and the second legend is revealed. A resilient arrangement moves the movable part to one of the positions and there is provided a releasable latch arrangement for retaining the movable part in the other of the positions against the action of the resilient means.

Abstract: A latching attachment for rocker switches is disclosed which is manually shiftable to selectively allow depression of only one or the other end of the rocker button. The attachment includes an elongated slider member disposed alongside the rocker button and slidable transversely of the pivotal axis. At the distal ends of the attachment there are extended lower interference ear portions which, upon shifting of the attachment, alternately protrude below, and into the path of motion of, a respective end of the rocker button to prevent depression thereof.

Abstract: A relay for electromagnetic radiation occurring in the optical portion of the electromagnetic spectrum has a receiver and a transmitter. The receiver senses a propagated beam of electromagnetic radiation providing a signal corresponding thereto which is shaped in an electrical circuit and provided as an excitation signal to the transmitter. An audio alignment feature is included providing audio indications for alignment of the receiver with the beam of electromagnetic radiation which is to be relayed. The transmitter is directionally adjustable to provide a relayed beam of electromagnetic radiation in a direction different from the received beam. The method includes aligning the receiver with the beam of electromagnetic radiation and converting the received electromagnetic radiation beam to a corresponding electrical signal in the receiver.