Abstract: An improved means and method for accomplishing floating point calculations in computational apparatus includes a primary microprocessor and a secondary microprocessor each with its own control ROM. The normal or fixed point calculations are handled by the primary microprocessor under the control of a first segment of the associated control ROM. When a floating point calculation is called for, a second segment of that ROM is addressed. The addressing of the second segment of the first ROM also effects the coincident addressing of the ROM of the secondary microprocessor. For floating point calculations, the exponent portion of the numbers being manipulated is handled in the primary microprocessor. Simultaneously therewith, the mantissa portion of the numbers being manipulated are handled in the secondary microprocessor under the control of its associated control ROM. The resultant calculations are recombined in the primary microprocessor to produce a complete solution for the floating point calculation.

Abstract: The disclosed valve seat is a unitary member consisting of a rigid annular portion supported from an annular base portion by a resilient, annular, wall-like connecting portion. In the disclosed valve, this base portion is secured in the valve housing to space the noted three portions concentrically along the fluid flow path through the housing. As the cooperating eccentrically-rotated valve plug contacts the seating portion, the plug exerts a force on the seating portion which converges the walls of the connecting portion. This prevents jamming between the plug and the seating portion while permitting a tight fluid seal to be established between those parts. A preferred shape (FIG. 2) for the connecting portion which provides such jam-free but tight fluid sealing action is that of a truncated cone having its larger inner diameter at the base portion of the seat member and its smaller inner diameter at the seating portion of the seat member.

Abstract: A timer circuit is powered by an alternating current (AC) from an AC source which current is rectified to produce direct current (DC) and used to energize a power transistor connected between the DC source and in a load. A separate timing control circuit responds to a selected one of a plurality of AC input signals to provide multiple time delay control signals for initially actuating the power transistor to provide a current flow to the load and, subsequently for turning off the power transistor. The timing circuit uses a controlled charging of a timing capacitor to trigger a unijunction transistor into conduction. The unijunction transistor, in turn, develops an output voltage for actuating an SCR. The SCR is connected with its current conducting path across the load, e.g., across a relay coil, and is used to short-circuit the relay coil when the SCR is actuated into conduction.

Abstract: A multipoint recorder has a multicolor ink cartridge arranged to be selectively aligned with a recording head having a plurality of selectively energizable recording elements whereby a color from the multicolor ink cartridge is selected for printing by the recording elements. A fixed color operation of the recorder enables a recording to be made in a single color by maintaining a preselected alignment of the recording head and a desired color in the multicolor ink cartridge. Alternatively, the color of the recording can be selectively altered at any time to produce a multicolor recording by selecting a corresponding color from the multicolor ink cartridge for each recording.

Abstract: In an energization circuit for a memory module, the primary energization is derived from a primary power supply source fed through an isolating diode to a regulating circuit. The regulating circuit includes a series regulator device such as a darlington amplifier. A voltage detector module is provided which is characterized in very accurate operation while drawing a negligible amount of current for its own operation. The output of the voltage detector is used to control the operation of the series regulator. A stand-by, or back-up, power supply, which may be a battery is connected to the regulator circuit through a further isolating diode.

Abstract: An address converter for decoding a multi-bit binary address has a binary adder to provide a logic subtraction of binary bit information introduced by a plurality of manually settable switches from a predetermined number of most significant binary bits in an address signal, an address-decode circuit for receiving an output signal from the adder and the next order of magnitude of the binary bits in the address signal and a plurality of system subunits which receive an output signal from the address-decode circuit and the remaining least significant bit information in the address signal to access the subunits according to the address signal and the switch settings in a predetermined order.

Abstract: A solar cell has a heat collector bar with a heat absorbing material in contact therewith. The heat absorbing material includes a transparent web member having a plurality of capsule uniformly distributed therein with each capsules having a suspension of highly reflective, flake-like, field responsive particles therein. The particles may be preoriented with respect to incident electromagnetic radiation.

Abstract: Each sensor consists of a spinel substrate in the form of a beam or a diaphragm which carries a pattern of a plurality of doped silicon piezoresistive resistors. The latter are formed from layers of doped silicon, each of which layers has been epitaxially grown on a corresponding surface of the spinel substrate. The spinel minimizes the occurrence of leakage currents with respect to the resistors, while cooperating with the silicon to provide a high degree of stress transmission to the resistors. The beam form of sensor is shown as the sensor member of a differential fluid pressure to electric signal transducer, wherein the sensor is deflected and strained in accordance with the differential pressure to be sensed.

Abstract: An apparatus for accommodating various sizes of molding die inserts in an injection molding machine using a pair of injection die support frames to hold either injection molding die inserts fitting directly into corresponding recesses in confronting faces of the die support frames or second injection molding die inserts combined with respective injection die insert adaptors fitting into the recesses in the die support frames. An adjustable stop for the confronting faces of the die supports is provided in confronting face of one of the die support frames to maintain a uniform parting line between the die support frames and the die inserts by providing a selectively elevatable contact surface above the parting line facing surface of the one die support frame.

Abstract: A method for fault-testing of electrical apparatus includes the steps of interrupting the application of control signals normally producing changes in the electrical apparatus, disconnecting electrical apparatus monitoring circuits from energizing signal means used to produce output signals from the electrical apparatus monitoring circuits dependent on the state of electrical apparatus, and checking the subsequent output of monitoring circuits to detect the output signal to detect output signals during the deenergized state indicative of a fault in the monitoring circuits. An apparatus for performing the aforesaid testing method includes a digital computer having a stored test control program therein for selectively addressing the power supply connection means of the monitoring equipment to produce a deenergization of the monitoring equipment and means for checking the output of the monitoring equipment after the deenergization thereof.

Abstract: A multi-data recording system includes apparatus for generating two control signals of different frequency characteristics. A mixer is provided for interleaving the two types of signals. The display and recording of the data signals is accomplished under the control of the resulting composite signal from the mixer.

Abstract: A particulate, resilient, electrically conductive member having a low thermal mass which extends across the width of a conductive backed recording paper and conducts electrical energy to the conductive backing to heat the paper and develop an image.In a preferred embodiment, a comb-like contact has a plurality of closely spaced resilient fingers which extend across the width of the web and make contact with the conductive backing.Due to the low thermal mass of the contacting fingers, and the poor thermal path to conduct heat away from the fingers, they rapidly reach the temperature of the paper.

Abstract: A signal conditioning circuit for a servo signal derived from a magnetic record tape includes a frequency selective signal normalizing circuit which normalizes the reproduced signal to a predetermined value irrespective of the frequency of the input signal. The selective operation of the normalizing circuit is programmed in accordance with a digital code signal representative of the selected speed of operation. A frequency selective filter circuit is also programmed in accordance with digital code representative of the selected speed of operation.

Abstract: The clock generator, which is shown as being a part of a data processor, includes a recirculating shift register and gate combination for deriving a set of four clock phase signals from a master clock signal. The generator also includes two gates and a D flop which form sequential circuitry. The latter controls the shift register to impart a desired nonsymmetry to the clock signals, and to vary that symmetry, as necessary to minimize the clock cycle time and to maximize the processor operating speed. To this end, the circuitry normally makes the clock pulse widths a minimum, consistent with the processor requirements, and, on demand, doubles the widths of only those clock pulses which are actually timing the slowest processor portion, thereby lengthening only those specific clock cycles which contain the demanded widened clock pulses.

Abstract: An interface circuit in a current telemetering system includes first and second current loops connected in parallel between a pair of energizing terminals. The first loop includes a voltage controlling transistor, resistors, a current controlling transistor, and a current receiver connected in series between the energizing terminals. The second loop includes the voltage controlling transistor, a resistor, a Zener diode intrinsic safety barrier, a two-wire link, and a current transmitter connected in series between the energizing terminals. A first amplifier senses the currents in the two loops and controls the current controlling transistor to keep the current in the first loop and the receiver proportional to the current in the second loop as established by the transmitter. A second amplifier monitors the voltage at a point in the first loop and controls the voltage controlling transistor so as to keep the voltage at that point constant at a predetermined value.

Abstract: There is provided, in accordance with the present invention, apparatus comprising a shared random access memory in which is stored requests for access to data in a bulk memory unit. The data being stored in redundant storage areas and the requests stored in the RAM include the address of the redundant data. Means are provided for determining if that data request is already in progress through one of the redundant addresses. The first of the addresses accessed causes the others to be blocked to prevent multiple accessing of the same data. The checking and selection is accomplished by high speed logic circuitry.

Abstract: A portion of the apparatus, which requires low voltage DC energy for its energization, is connected in series with an SCR between a single pair of input or energizing terminals. A series RC circuit is connected across the SCR, and the junction within this series circuit is connected through a zener diode to the gate of the SCR. When low voltage DC is applied between the input terminals, it turns on the SCR continuously and effectively appears across the noted apparatus portion to properly energize the latter. When high voltage AC is applied between the same input terminals, it turns on the SCR for only a predetermined part of each cycle of the AC. This part is made to be such that the resulting voltage across the noted apparatus portion is effectively the same when the high voltage AC is applied between the input terminals as it is when the low voltage DC is applied between the same input terminals.

Abstract: Electrodes for an electromagnetic flow meter are mounted through a pipe wall using pairs of concentric electrodes electrically insulated from each other and from the mounting pipeline while electrically contacting a fluid in the pipeline being measured for flow rate. The electrode pairs are held on the pipeline wall on a line intersecting the fluid flow at a right angle and are electrically connected to supply signals induced by the fluid flow to a measuring circuit. The concentric electrode structure provides two electrode pairs at each electrode site on the pipeline wall.

Abstract: A power supply structure for an electronic system includes a primary power source and a stand-by or secondary power source. The secondary power source is ground circuit isolated from the primary source. A monitoring circuit, which is energized from the secondary source is connected to monitor the primary source for incipient failure, then to produce an output signal which may be used to trigger an alarm and/or switch the secondary power source into energizing connection with respect to the electronic system.

Abstract: A recorder using a carbon backed "self-developing" dry silver recording medium which is guided over a recording and developing path includes a pair of rollers one of which is connected to a ground potential and the other to a positive potential with the electrically conducting carbon coated side of the recording medium arranged to contact both of the rollers to enable electrical current to pass through the carbon backing to generate the heat required to develop the recording thereon. A third roller is arranged to contact the recording medium on the recording side and to press the carbon coated side against a second location on the ground roller to provide a second current conducting path between the positive potential roller and the ground roller. The electrical current is controlled in accordance with the speed of the recording medium to insure a proper developing time relationship at different recording medium speeds.