Instrumentation for Solar-Oscillation Measurements
System works with any telescope with spectrograph without interfering with existing use of spectrograph. Telescope aiming accuracy is 1 arc-second.
Rhodes, E. J., Jr.↗
Engineering topics
Andrews, T. W.
Publications and source records attributed to Andrews, T. W..
Probe Follower for Moving Blood Vessels
Probes track vessel expansion and contraction with minimal perturbation. Nozzle back-pressure changes at cuff on blood vessel basis for monitoring position of probe in blood vessel. Fluidic amplifiers use signals to control three-axis servo that centers measuring probe between sensing-nozzle pairs at cuff.
Frazer, R. E.↗
Continous Monitoring of Melt Composition
Compositions of glasses and alloys analyzed and corrected in real time. Spectral analysis and temperature measurement performed simultaneously on molten material in container, such as open-hearth furnace, crucible or tank of continuous furnace. Speed of analysis makes it possible to quickly measure concentration of volatile elements depleted by prolonged heating.
Frazer, R. E.↗
Moving-Surface Follower Aids Microsurgery
Novel manipulator follows movements of arteries and muscles, enabling precise placement of probe or other microsurgical tool in moving tissue. Microprobe assembly is mounted on output of pneumatic servo of commercial noncontracting thickness gage. Pulsations of tissue surface to be penetrated by probe are sensed by gage and followed by servo, eliminating relative motion between tissue and probe.
Feldstein, C.↗
System and method for moving a probe to follow movements of tissue
An apparatus is described for moving a probe that engages moving living tissue such as a heart or an artery that is penetrated by the probe, which moves the probe in synchronism with the tissue to maintain the probe at a constant location with respect to the tissue. The apparatus includes a servo positioner which moves a servo member to maintain a constant distance from a sensed object while applying very little force to the sensed object, and a follower having a stirrup at one end resting on a surface of the living tissue and another end carrying a sensed object adjacent to the servo member. A probe holder has one end mounted on the servo member and another end which holds the probe.
Feldstein, C.↗