A method wherein an optical blank work surface is figuratively divided into an array of adjoining surface areas and measured to determine the total relative number of uniformly sized blank material decrements that are required in each surface area to produce a desired surface contour. An optical lap moving across the work surface in an irregular continuous path produces one of the uniform decrements upon each traversal across an individual surface area. The lap is controlled such that its travel...

An apparatus for generating a high voltage which includes a transformer, a rectifying circuit connected to the transformer, a high voltage output terminal connected to the rectifying circuit, a foamed insulator molded into the space between the transformer and the components of the rectifying circuit with the exception of the high voltage output terminal, and a container insulated by the foamed insulator from the high voltage components and electrically grounded.

An apparatus is disclosed to be used in conjunction with a suitable general purpose digital computer in programmed time-of-flight mass spectrometric measurements to provide well defined aperture signals with an adjustable time delay from an initiating pulse, adjustable repetition times and adjustable pulse length. A high-frequency generator, e.g., a 100 megacycles/second generator, is used as a clock pulse generator. Two subtract-1-counters are used for time determination. The computer supplies ...

Chirp pulse generating circuits using constant-K, incrementally time dispersive delay lines are disclosed. Gated sources place predetermined amounts of energy in elements of the lines. When this energy discharges, Chirp pulse output signals are produced.

A hologram is generated by first providing a holographic signal representing scanning of a standing wave interference pattern. The signal controls generation of local perturbations in a target usable as modifier for monochromatic coherent radiation to cause reconstruction of an image.

Disclosed are semiconductor circuits which are capable of operating as oscillators or as combined oscillators and triggered pulse generators, and which make use of internal transistor capacitance in such a manner that external discrete capacitors are not required to provide such operation.

An inert gas welding torch is used to create plasma by directing one or more discrete high velocity jet gas streams into a welding arc between the electrode and the workpiece. The plasma stream is controllable with regard to energy content or location by varying the amount or direction of the inert gas flow. The plasma stream is insensitive to variations of arc length, and permits abnormally high current densities in the electrode. When used with consumable electrodes, the invention is useful fo...

This disclosure includes embodiments of apparatus for generating patterns of pulses comprising fixed or random series of pulses of predetermined bit lengths using a first register driven by pulses at the pattern clock rate, and the stages of the first register being coupled each to drive at least one other register having multiple output stages, and the latter being coupled to gating means to be gated with outputs from said first register. Random series of pulse patterns are generated in an embo...

An acoustic pulse generator and a method of producing acoustic pulses in a fluid medium is provided. In a preferred embodiment of the invention, the acoustic pulse generator includes a piston slidably disposed within a cylindrical housing having one end open and one end closed to the fluid medium. When the generator is submerged, the piston is accelerated toward the closed end of the cylindrical housing by the ambient pressure of the fluid medium and rebounds from the closed end of the cylindric...

A method for generating power during peak-load hours and accumulating energy during minimum-load hours, in which during minimum-load hours, air is conpressed, refrigerated and accumulated under pressure in storage tanks, and during peak hours power is recovered in turbines which are supplied with compressed air by said storage tanks, wherein during peak hours, the air compressors used in the accumulating period for the storing of compressed air, are fed with external air which is refrigerated by...