Quotables
"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 3965642 | Method and apparatus for filling plastic bags with liquid or particulate material Formation and liquid-filling of plastic bags is performed in a continuous high speed and low cost process. Plastic film is extruded in tubular form and inflated with air or another gas. The tube is transported along a path of work stations at which the tu... | 06/29/1976 |
| 3963992 | Linear AGC circuit with controlled duty cycle sampling means An intermodulation distortion analyzer generates two pairs of sinusoidal test tones to serve as a test signal for the channel under test. The two pairs of tones simulate two respective noise band test signals but eliminate the long time averaging required... | 06/15/1976 |
| 3961264 | Linear frequency converter with gain independent of circuit parameters A frequency converter circuit includes an input voltage-to-current converter which delivers signal current to a tuned IF circuit via a current steering circuit controlled by a local oscillator. In a preferred embodiment voltage-to-current conversion is ef... | 06/01/1976 |
| 3961255 | Measurement bandwidth enhancement in phase lock loops In a phase lock loop, the bandwidth of the phase error signal, when used for phase measurement outside the loop, is increased by summing the error signal with an integrated version of the VCO control signal derived from the loop filter circuit. The combin... | 06/01/1976 |
| 3955083 | Interferometric device for encoding shaft angles In a shaft angle encoder, an optical system translates the shaft angular displacement into a difference of two optical path lengths and that difference is measured by interferometry. Light from a monochromatic source is split and both the transmitted and ... | 05/04/1976 |
| 3955049 | Printing head A printing head provides an array of stylii and stylii drivers for forming characters in accordance with a desired matrix of dots. Each driver comprises a flat piezoelectric ceramic wafer and a levered beam having a stylus secured to one end and providing... | 05/04/1976 |
| 3951089 | Roll-damping tanks for waterborne vessels In a ship's roll damping tank, means are provided that are operative to extract substantial wave velocity energy from the liquid in the tank. Perforated pipes are laid in spaced parallel relationship across the bottom of the tank, i.e. in the fore and aft... | 04/20/1976 |
| 3947882 | Vending system for remotely accessible stored information A vending system includes a central station at which various information stored on master recordings can be selectively accessed by purchasers from any of multiple remote vending machines, the accessed information being reproduced on cartridge-type storag... | 03/30/1976 |
| 3945781 | Molding apparatus to form a three dimensional product on a web material Continuous production of a molded three-dimensional product employs an indexing rotatable drum having along its periphery a plurality of mold cavities into which molten thermoplastic material is introduced, and a web of material permeable to the molten th... | 03/23/1976 |
| 3944977 | Adaptive and programmed threshold level detection arrangement A threshold level is automatically varied to follow variations in an input signal reference level. In the disclosed embodiment the reference level is that produced by photodiode-amplifiers in an OCR machine when viewing white or non-character portions of ... | 03/16/1976 |
| 3943420 | Electric vehicles A battery vehicle having a normal speed range for house to house deliveries and an extended speed range for lengthy journeys such as to and from delivery rounds. The extended speed range is engageable by operation of a manual range control. The manual ran... | 03/09/1976 |
| 3940703 | Intermodulation distortion analyzer An intermodulation distortion analyzer generates two pairs of sinusoidal test tones to serve as a test signal for the channel under test. The two pairs of tones simulate two respective noise band test signals but eliminate the long time averaging required... | 02/24/1976 |
| 3938464 | Contra-rotating propeller drive system A contra-rotating propeller system, particularly adapted for high speed water craft, is characterized by a movable support for at least one of two nominally-aligned and independently driven contra-rotating propellers. In a particular embodiment a forward ... | 02/17/1976 |
| 3936017 | Combined noise shield and thrust reverser In an aircraft with a multi-engine configuration at the aft end of the fuselage the engines lie on top and on either side with their air intakes so positioned that downward and sideways noise shielding is provided by the fuselage and the wings, the wings ... | 02/03/1976 |
| 3935448 | Optical scanning systems An optical scanning system has a dirigible head of generally spherical shape mounted on a support body for scanning through a substantially hemispherical field of view, and optical lenses, a scanner rotor and drive motor therefor, and a cryogenically-cool... | 01/27/1976 |
| 3934254 | Reliable cycle selection in LORAN-C system Reliable cycle selection is achieved with LORAN-C pulses received under low signal-to-noise conditions. A tracking pulse is generated at the LORAN-C pulse repetition rate and is intended to be time-coincident with the end of the third 100 KHz carrier cycl... | 01/20/1976 |
| 3932734 | Binary parallel adder employing high speed gating circuitry In a binary parallel complementing L.S.I. adder, a C-MOS transmission gate is provided in each stage with its input and output directly connected to the carry in and carry out leads of the stage. The gate is switched by complementary control bits derived ... | 01/13/1976 |
