Abstract: An angular measuring system consisting of one or more sensors that transmit angular measurements to a central control unit where numerical readout of any selected sensor is provided. A threshold can be preset at individual sensors or the control unit for an allowable angular deviation, beyond which a warning device is actuated. The circuitry permits locating the sensors remotely from the console and provides precision and stability of operation. Low power consumption permits extended operating periods with internal batteries. False alarms are minimized by incorporating a hysteresis loop in the threshold detection circuitry.

Abstract: A cleaning apparatus for a combine harvester is disclosed wherein the grain pan and sieves are mounted in a shaker shoe pivotally supported on the main frame of the combine for movement about a transversely extending axis. Hydraulic actuators interconnecting the main frame and the shaker shoe affect a pivotal movement of the shaker shoe to level the cleaning apparatus under conditions where the combine has an inclined fore-and-aft orientation. An inclinometer is utilized to control the flow of hydraulic fluid to the hydraulic actuators to permit the shaker shoe to be leveled in response to a sensing of a non-horizontal fore-and-aft inclination by the inclinometer.

Abstract: A multiply pipeline with parity circuit to be used as a building block in a multiplication pipeline of arbitrary size is disclosed. It includes circuits for generating and checking parity. The parity of the output carries leaving the component chips of the multiply pipeline are explicitly generated internally to those chips. By generating output carry parity on-chip, all single-bit errors except for those caused by on-chip internal gate or metallization faults will be detected. Thus, means are provided for detection of single-bit errors in the multiplication circuitry. The proposed multiply pipeline with parity circuit includes a pair of gate arrays, or chips, which participate as follows. A 6-bit by 6-bit multiply with parity chip is used as a building block in a portion of the pipeline in which all logical products are initially generated, and reduction of these logical products, or partial products, commences.

Abstract: During the assembly of electronic components on circuit boards, the problems of ductile smear cusps produced on wire ends by traditional scissor-type shearing are addressed by a spiral orbital shear apparatus. This apparatus includes a first fixed plate having an array of apertures and a second plate also having the array of apertures. The first and second plates have abutting surfaces. A first eccentric drive member is connected to rotate at a first rate in a first direction. A second eccentric drive member is connected to the second plate and rotates with the first eccentric drive member. The second drive member is also rotated at a second rate in the first direction independently of the rotation of the first drive member.

Abstract: A thin film passive integrated optical waveguide is formed in a lithium tantalate substrate by proton exchange in a benzoic acid bath. Annealing the substrate provides increased waveguide depth and stabilizes the refractive index. Optical components are formed by proton exchange of the masked substrate after formation of a planar waveguide.

Abstract: An apparatus for color and brightness correction for a multi-gun color CRT display, providing compensation for variation in phosphor efficiency with cathode energization and for color tracking between guns. The brightness correction circuit is required to respond only to essentially DC changes, while a color selection circuit responds at a video rate. In a preferred digital embodiment, brightness and color tracking correction factors are stored in memory dedicated to a particular CRT, and addressed in response to input from a reference brightness level selected by an operator. A color selection decoder having stored in a second memory relative brightness characteristics of each color phosphor as a function of the hue commanded converts an input binary command to an analog output, which is combined with the brightness and color tracking correction factor to determine the resulting cathode energization for each color gun.

Abstract: In a system wherein a central computer complex is connected through central control modules (CCM) and channel modules (CM) to the control units of peripheral subsystems, a first queue is maintained in a CCM for Start I/O Fast (SIOF) commands waiting to be accepted by the CMs connected thereto. After a CM accepts an SIOF command and passes it on to a control unit, the control unit may return to the CM a busy status which is then passed through to the CCM. The CCM maintains a control unit busy (CUB) queue and an entry is made therein when busy status is returned. When a control unit reports control unit end status to the CCM, the CUB queue is linked to the top of the SIOF so that the CMs may again be informed that the SIOF commands are available. The arrangement avoids two interruptions of the central computer complex to report first that the control unit is busy and then that the control unit is available.

Abstract: Apparatus for selectively extracting, magnifying and juxtapositioning selected areas of a raster scan image relative to the primary image so as to permit an observer to better view selected areas of the primary image while still viewing the entire primary image. The apparatus essentially comprises means for sampling x and y radar address data and related video data, means for independently and selectively scaling and offsetting the address data for a primary image memory and for a local zoom memory and means for selecting the areas of the primary image that are to be magnified. The selected areas of the primary image are displayed at a rate defined by a zoom magnification factor, scaled and offset independent of the primary image--but relative to the local zoom area, and displayed by extracting the data from the local zoom memory, rather than the primary image memory, as the display raster scans the areas of the screen where the zoom image is to be displayed.

Abstract: Circuitry for distinguishing each value in a read signal magnetically recorded in ternary-3 position modulation in which the values 1, 2 and 0 are detected and equalized into a singlet, a doublet and absence of magnetic flux change. The circuitry first determines the position locations of each singlet peak and doublet crossover point to establish proper timing of the output signals and then identifies the particular type of signal appearing at the timing points in the read signal sequence. Singlets are identified by the much greater amplitudes in the integrated read signal. Doublets are identified as waveforms having slopes at zero crossovers that correspond in polarity to that of the previous singlet. A novel detector circuit is provided that can correctly identify doublets in a code sequence, irrespective of the presence of a previous singlet, when a recording rule is followed that includes the insertion of a number of consecutive ternary 0 symbols into the recorded signal.

Abstract: In superconductive integrated circuit a semiconductor substrate is used in combination with normal resistors formed by degenerate doping of the substrate in selected regions. Doping is preferably performed by planar diffusion or ion implantation. Application of the invention to fabrication of a Josephson Atto-Weber gate by forming a normal resistor intermediate the junctions is also disclosed.

Abstract: A beamformer that accommodates signals of substantially wider bandwith than conventional phase-shift beamformers by processing signals coupled from an array of sensor elements in a multi-stage sequence of operations that alternate between phase-shift beamforming and time-delay steering.

Abstract: A quaternary saturated digital magnetic recording system for enhancing information entropy provides an effective bit density increase of 100% or more over the MFM code. In the simplest implementation, groups of two input binary bits are mapped into one data cell, preferably into four combinations of long or short breaks and positive or negative polarity, with the break optionally centralized within the data cell for self-clocking. A system for reproducing the recorded information provides a peak detector, responsive to the recorded signal, coupled to pulse polarity and break width detector circuitry, with an internally synchronized clock, for remapping the recorded data into binary format.

Abstract: A multiphase imbalance monitor utilizes a resistive summing network for sampling the ac voltage in each phase of the system under consideration. The summing network provides a zero voltage output under normal conditions. When a phase imbalance or missing phase condition occurs, the summing network provides a finite output voltage which can be used to actuate indicating and/or interrupting means.

Abstract: A controlled capillary ball bearing cage composed of a plurality of layers woven mesh containing warp and woof strands. Selected removal of warp strands forms uniformly spaced cylindrical lubricant reservoirs around the circumference of ball bearing pockets machined into the cage.

Abstract: A low insertion force connector for making electrical connection between electrical contacts on a printed circuit board assembly and external circuitry, and having an improved linear cam actuating mechanism is described. An elongated outer housing having a centrally located opening with a longitudinal channel along the bottom thereof, has spaced apart ramps positioned at the bottom of the channel. The housing has an aperture at each end thereof, and has external ramps on each end of the outer housing in a predetermined relationship to the associated aperture. A plurality of contacts are mounted within the outer housing on either side of the channel, with first ends interior the housing being bowed inwardly for contacting the printed circuit board assembly, and second ends extending through said outer housing for making electrical connection to external circuitry.

Abstract: A method and apparatus for checking the volume of lubricant in the rotary cutterbar of a disc mower-conditioner is disclosed wherein the header of the disc mower-conditioner is provided with a jackstand to affect a tilting of the disc cutterbar at a predetermined angle relative to horizontal. The fill hole for adding lubricant to the cutterbar is positioned such that the volume of the cutterbar vertically below the fill hole when the cutterbar is tilted at the predetermined angle is substantially equal to the recommended volume of lubricant to be carried by the entire disc cutterbar. The proper volume of lubricant for the cutterbar can easily be determined by filling the cutterbar with lubricant up to the fill hole when the cutterbar is tilted at the predetermined angle.

Abstract: A combine harvester having a rotary threshing and separating mechanism is disclosed wherein a grain loss sensor is mounted to one side of the threshing and separting mechanism such that separated grain is propelled onto the sensor by the threshing and separating mechanism. The sensor is vertically mounted in an impervious casing for the rotary threshing and separating mechanism to sense the grain being separated just before the crop material is discharged from the combine.

Abstract: In a suspension system for a gyrocompass or similar device, a plurality of sway rods, springs and shock snubbers are combined to isolate the gyrocompass or similar device from vibrations having low frequencies in all directions.

Abstract: A superconductive junction device for fabricating Josephson integrated circuits is useful for replacing deposited thin-film resistors and for short-circuit device interconnections. Derived by "poisoning" a superconductive electrode or altering the barrier of a tunnel junction, the device displays controllable resistive properties at normal superconducting transition temperatures at substantial savings in the space occupied. Methods of fabricating the device using the selective niobium anodization process and ion implantation process are disclosed. When both upper and lower superconductive electrodes are poisoned, the device has linear properties whose resistance is identical to the normal resistance of unpoisoned junctions. Superconducting short circuits are readily obtained by oxygen ion implantation in thin film niobium electrodes.

Abstract: A low leakage inductance inverter transformer utilizing a torodial ferrite core having a primary winding wound thereon, with the secondary winding constructed from stamped conductive clips ranged to encompass portions of the core and primary winding with clip interconnections formed by printed circuit interconnections is described. The conductive clip described includes integral pins for making connection to printed circuit wiring on a printed circuit board. The turns ratio is selected by the pattern of printed circuit interconnection of the conductive clips such that the transformer structure turns ratio is established by the associated printed circuit interconnection pattern.