Other

Morgan Construction Company

Robert B Russell

Martin Gilvar

Rotation is detected by splitting a beam of phase coherent light into two beams and directing them separately and oppositely around paths at least one of which is separated from and surrounds the axis of rotation. A light transmitting medium having a substantial index of refraction is interposed in said at least one path. The beams are then combined to form a fringe pattern and rotation is indicated by a shift in the fringe pattern due to the Fizeau effect. The length of said medium is made as long as it can be made while still retaining sufficient coherence in the light and intensity to detect the fringe pattern efficiently.

Apparatus for measuring rotation by a combination of the Sagnac and

A process for rolling steel rod is provided whereby rolling rod at delivery speeds in excess of 15,000 fpm and cooling same after laying it in spread-out ring form on a conveyor is made feasible with less risk of cobbles and improved rod quality especially in the medium to high carbon content range by entering the rod after rolling into the laying head and thereafter cooling same non-uniformly through a grain size growing phase and a transformation phase with the non-uniformity of cooling rate during the transformation phase being kept in substantially inverse proportion to the differences in effective grain size established in the first phase. In addition a very long cooling conveyor which is necessitated by such delivery speeds (not only for high carbon steels but also low carbon and low alloy steels) is provided without requiring additional horizontal space, by arranging the conveyor in a multiplicity of tiers, spaced vertically, running in opposite directions, and being provided with means for transferring the rings from one tier to the next. Cobbles on the conveyor at high delivery speeds are minimized by coiling with 1/2' spacing, and by reforming means adapted for high speed delivery of rings from the conveyor onto an upwardly sloping mandrel surface, or into a curved chute which stacks the rings on their sides. An intermittent reheat method is employed for processing rod where slow cooling and/or heat treatment at a steady temperature is required.

Steel rod rolling process

Steel rod rolling process, product and apparatus

An interferometer device and method for detecting variations in the effective path length of light on opposite sides of an enclosed ring-like optical path. Laser light is split and passed in opposite directions around an area in one or more planes to a point where the beams come together at which point they are directed, in coincidence, into one or more photodetectors. A variable light delay means is located in each light path and each delay means is operated repetitively to vary the delay by a selected amount and at a selected rate to produce repeating bursts of selected beat frequencies at said photodetector. After heterodyning the beat frequencies down, the differences therebetween are repetitively measured by a frequency counter to a high degree of accuracy by long term averaging. Slow rates of rotation of the apparatus about an axis normal to the plane of the enclosed path are detected independently of noise in the system and variations in the frequency of the laser.

Interferometer

A system for detecting, quantizing, and displaying simultaneously on a single recording a wide panorama of cardiac diagnostic information including data inputs from EKG, phono-doppler, sound, and pulse; displaying each input in a distinctive color or form, in coordinates of time, frequency, and amplitude. A multi-channel recording system with an 'instant replay' feature is employed to record simultaneously the respective inputs plus a timing pulse in separate channels, the timing pulse being generated by the periodic recurrence of a characteristic signal present in one of said inputs. A given sequence is selected for analysis and the recorded inputs for that sequence are replayed and fed to a high speed digital voltmeter-computer combination which dissects the wave form of the signals of each of said inputs separately and provides a read-out of the entire time, frequency, and amplitude content of all portions of the wave form of each input. A plotter transcribes the output of the computer three dimensionally, that is, in coordinates of time, frequency, and amplitude and distinguishes between the respective forms of data by presenting each in a distinctive color. A record of the output of the computer is also provided by means of a conventional computer print-out.

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Chestnut Hill, MA, United States of America

Robert B Russell