Abstract: A hydraulic power pack having a framework, a prime mover driving a hydraulic pump, a hydraulic circuit including a reservoir and flow and return connectors. The power pack also includes an oil cooling system comprising a thermostatically operated valve and an oil cooler in the hydraulic circuit. The valve diverts flow of fluid to the oil cooler when the temperature of the fluid rises above a predetermined limit, before returning the fluid to the reservoir. The oil cooler has a pair of heat exchangers mounted at the respective outlets of a double acting centrifugal fan directly coupled to and driven by the prime mover.

Abstract: A hydraulic power pack having a prime mover driving a plurality of hydraulic pumps, a hydraulic circuit including a reservoir connected to an inlet of said pumps, an outlet circuit from said pumps, one or more pressure relief valves in the outlet circuit and a plurality of external connectors on the outlet circuit. The connectors and the relief valves are arranged so that different hydraulic flow and pressure characteristics may be obtained from each connector. Each connector has a flow and a return line, the latter being connected to the reservoir. Valves provided in the hydraulic circuit are responsive to zero flow in the return line of each connector and are adapted to divert the hydraulic flow directly to the reservoir without restriction.

Abstract: A multi-user, multi-task analog/hybrid system having a digital computer and a main digital memory. The programs are run with one of the analog and digital programs becoming time critical. A linkage system having ADC and DAM channels link the data flow between the analog computers and the digital computer. The linking system is controlled to substantially allocate all of the data flow to the time critical analog and digital programs and as available data flow is allocated to nontime critical programs. After allocation, there is automatic data transfer without digital computer intervention.

Abstract: The prior D.D.A. (Digital Differential Analyzer) having an integrand register, a remainder register and an adder for pulse interpolation has been improved by attaching some new units to the same, including a counter for counting the reference instruction pulses, a register for storing the content of the counter, and a multiplier for providing the product of the content of said register and the content of said integrand register. The product provided by the multiplier instead of the output of the integrand register, is applied to one input of the adder, the other input of which receives the output of said remainder register. Thus, the interpolation calculation has only to be performed once in every several periods of the instruction pulses, therefore, a slow speed digital element can be utilized for high speed instruction calculation.

Abstract: A semiconductor device which provides in an input circuit a substantially low reactance and a relatively high resistance within a range of operating frequencies to improve the impedance match between the device and an energy source. The device has a semiconductor die with at least a first and a second bonding terminal having capacitance and resistance between the bonding terminals. At least a first bond lead electrically connects the first bonding terminal to a first metallic contact area. Means connects at least a second bond lead between the second bonding terminal and a second metallic contact area. At least a third bond lead electrically connects the first bonding terminal to the second metallic contact area to form an inductance to interact with the capacitance of the semiconductor die within the operating range of frequencies thereby to increase the input impedance.

Abstract: A hydraulic power pack having a prime mover, at least one hydraulic pump, a reservoir and associated valving and hydraulic circuitry, in which each of the components is mounted on one of two parts of a frame. The two parts of the frame are hinged together at one side, thereby enabling the frame to be opened to allow access to the components for maintenance.

Abstract: A crystal controlled oscillator has a substantially stable frequency in an environment of wide power supply potential changes. A first CMOS device of a pair is coupled to a crystal network and operates as a substantially small signal linear amplifier. A second CMOS device of the pair forms a constant current source for the first device by means of a plurality of diodes coupled in series circuit between two terminals of the second device to produce a substantially constant biasing potential for the second device only when the potential of the power supply exceeds the value of the diode drop potentials. In this manner, the voltage across the oscillator is relatively independent of power supply voltage changes to provide frequency stability over those changes.

Abstract: A valve system for an unbalanced load having a first two stage valve assembly operable for raising the load and a second two stage valve assembly for lowering the load. Each of the second stages has a poppet with a parabolic contour which is dimensioned with orifice parameters to provide substantially linear flow rate change when the second stage poppet moves for substantially zero flow jerk. In addition, the raise valve assembly has a pilot line coupled directly to the load so that high pressure oil is instantly available to actuate the second stage poppet. The lower valve assembly has a dashpot to decrease the rate of opening of that second stage poppet.

Abstract: A self-contained, mobile refractory apparatus for repairing interior refractory walls of high temperature industrial ovens and furnaces by spraying fluent refractory slurry mixes to seal cracked and spalled areas thereof. The apparatus is mounted on a vehicle, and includes a base, a rotatable, articulated support mounted on the base, a pivotal gunning lance support secured to the articulated support, an elongated gunning lance mounted on the gunning lance support with capacity for selected reciprocal axial movement, a slurry pipe mounted rotatably within the lance and a spray nozzle affixed to the slurry pipe for spraying slurry. Reversible hydraulic motors impart selected reciprocal movement to the lance and selected rotary movement to the slurry pipe and its nozzle. The lance is constituted by a pair of elongated, concentric tubes having elongated supporting ribs interposed therebetween, to provide high strength and rigidity with minimum deflection in use.

Abstract: A table stop for a machine for cutting sheet material, more particularly a notching machine, comprising a double acting pressure cylinder for each the adjustment of the stroke of a stop rail along the blade of the cutting tool and its angular adjustment about a vertical pivot axis. The two pressure cylinders being coupled for a trailing movement of the one pressure cylinder provided for the angular adjustment by the other pressure cylinder being provided for the adjustment of the stroke. The relatively movable working members of the two pressure cylinders being connected with the stop rail through pivots.

Abstract: A fabric guide device for a linking machine having a rotatable circle of radially extending points. The device guides fabrics, which are to be joined by a chain stitch, onto the points so that the fabric edges are located at a predetermined height relative to the points. The device includes at least one pair of opposed guide surfaces for engaging slidingly opposite sides of a fabric adjacent an edge thereof. Adjustable reference surfaces locate selectively the height of the fabric edges relative to the points. The device is particularly useful in the joining together of patterned fabrics. It permits fabrics which are to be joined to be held in correct pattern position relative to each other, so that adjacent parts of the pattern are impaled upon the same points. When the seam is made, the pattern shows a correct join.

Abstract: An intervalometer for use with airborne rocket launchers having a switch assembly with a multiplicity of switch positions relating to the rockets. A solenoid assembly moves the switch assembly sequentially through switch positions for distributing firing current to the rockets. An electronic timing circuit energizes the solenoid assembly for a fixed time duration independent of variations in and characteristics of the solenoid assembly. At the termination of that fixed timed duration (1) a firing current pulse is applied to an individual rocket and (2) an additional fixed time duration independent of the solenoid assembly is initiated by the timing circuit. At the termination of the additional time duration, the timing circuit again energizes the solenoid assembly and the sequence continues. In this way there is achieved a time between leading edges of sequential firing pulses which are consistent, accurate and independent of solenoid assembly characteristics.

Abstract: An optical Raman microprobe with laser excitation for illuminating a sample, comprising means for illuminating the sample with a pulsed or continuous laser radiation of selected frequency, a microscope furnishing an enlarged image of the sample, means for selecting the wavelengths of the re-emitted or scattered light and means for detecting the selected light. The microprobe further comprises means for obtaining a micrographic image of the sample, to provide a map showing the distribution of a selected polyatomic species in the sample, by isolating a radiation characteristic of such species in the Raman, Stokes or anti-Stokes spectrum. All points of the sample may be illuminated simultaneously, or successively one after the other, or simultaneously along a selected line or curve.

Abstract: The recorded content of a magnetic card is transferred directly to a magnetic tape simply by bringing the magnetic card into contact with the magnetic tape and applying a magnetic field to the contacting area with the aid of a copy magnet or a magnetic printing head energized by D. C. current or A. C. current, on the condition that the coercive force of magnetic material on the card is larger than that on the tape, and a reproducing head mounted along the path of the tape reproduces the transferred content. Thus, the recorded content of a magnetic card can be reproduced many times just by engaging the card in the device once.

Abstract: A hydraulically actuated assembly for cutting and punching channels having a base section and an upper hydraulically operated section which is pivotally secured to the base section. The upper section has first and second side plate members spaced from each other to define the front and rear walls of a cutting and punching chamber. These plate members have upper recesses which receive a mounting member rigidly secured thereto to form a rigid support structure for a hydraulic cylinder and the cutting and punching operation.

Abstract: A feathering valve system for modulating the fluid inflow to a selected one of first and second chambers of a movable biased assembly. A controller is electrically coupled to a first and second solenoid operated pilot valve assemblies for selectively (1) maintaining the pilot valve assemblies in a valve closed state without bleed flow through the pilot orifices or (2) supplying a predetermined value electrical signal to either, but not both, of the valve assemblies for actuating one of the assemblies to an open position related to the value of the signal. Fluid under a substantially constant pilot pressure is applied under the poppets of both valve assemblies. Fluid flow is taken from above the poppet of an actuated valve assembly to a respective chamber whereby the movable assembly moves to a position which is a function of the actuating signal value.

Abstract: A linking machine having a rotatable dial mounting a plurality of radially extending points on which two contiguous fabrics to be joined together are impaled. The sewing linking is provided with at least two needles, with one or more needles operating from opposite sides of the fabrics. One or more needles are located exteriorly of the dial, and each cooperates with a thread guide located interiorly of the dial to form a thread into a chain of stitches. One or more needles are located interiorly of the dial, and each cooperates with a thread guide located exteriorly of the dial to form a thread into a separate chain of stitches. In one form of the invention, the machine has a pair of reciprocal linking needles disposed on opposite sides of the fabrics to be joined, and each needle forms a simple single thread stitch chain.

Abstract: A sewing machine having a rotatable inner disc, on which is supported a needle and a thread guide for rotation with the disc, and a rotatable outer ring mounting a plurality of radially extending points on which fabrics to be joined together are impaled. The inner disc and outer ring are generally co-planar, and are rotatable, both in unison and relative to each other, about a common axis. The disc and ring are rotatable together manually to a selected work location, at which exposed points are presented to an operator for impalement of fabrics to be joined together. The exposed points remain stationary at such location during fabric impalement. While the outer ring is stationary for impalement of fresh fabric pieces, the inner disc, supporting the needle and thread guide, rotates relative to the ring of points, whereby fabrics previously impaled on the points are sewn together.

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 facsimile signal is compressed by skipping the continuous white cells longer than a predetermined length, and the compressed facsimile signal is transmitted in an analog form. When some portion of a facsimile signal is deleted due to the absence of a black cell in said portion, an f-signal indicating the deletion of said portion is inserted at the head of the deleted portion. The amplitude of the f-signal is twice as high as the highest level of a picture signal thus a reception station can differentiate the f-signal from a picture signal. The compressed facsimile signal is modulated to an AM.PM.VSB signal (Amplitude Modulation-Phase Modulation-Vestigial Side Band Modulation), and is transmitted to a communication line. When the reception station recognizes said f-signal, a predetermined number of white cells are inserted automatically on a printing paper at the reception station.