Abstract: Downward displacement of an inner tube with respect to the outer tube in a coring tool is effectuated by an apparatus comprising a bearing assembly, a cylinder, a piston telescopically disposed within the cylinder, and a mechanism for selectively applying an hydraulic force to the piston. The bearing assembly is longitudinally fixed with respect to the outer tube while providing rotational freedom with respect to the outer tube. A cylinder is axially disposed within the coring tool, is connected to the bearing assembly, and hence is rotationally free with respect to the outer tube. The piston, which is telescopically disposed within a cylinder, is downwardly longitudinally displaceable within the cylinder, and hence with respect to the outer tube. A mechanism is incorporated within the coring tool for selectively applying a hydraulic force to the piston in order to longitudinally displace the piston downwardly within the cylinder.

Abstract: A protective glove 10 constructed of shock-absorbent material, comprising digital sheaths 16, 18, 20, 22 and 24 anchored to a metacarpal sheath 14. The sheaths 16, 18, 20, 22 and 24 extend to cover the second-innermost joint of each digit, 17, 19, 21, 23 and 25. As a result, the glove 10 pads the critical area of wrap-around grasp--the metacarpals and the entire shaft of the proximal phalanx--yet permits unimpeded fingertip feel by exposing the distal phalanges. The glove 10 further preserves normal hand sensations during flexion and extension: by covering both the palmar curve and the dorsal surfaces of the second-innermost joints, the glove 10 exerts forces on the palmar surface and the aforesaid joints in proportion to the forces caused by normal compression and stretching at those respective positions on an unprotected hand.

Abstract: The rate of temperature change of an infrared detector produced by a cooling source in a typical Joule-Thomson cryostat (or other cooling device such as closed cycle cooler) is reduced by interposing a thermal filter between the detector and cooling source. The thermal filter comprises at least two layers of a first material having a good heat conductivity and high heat capacity, such as copper, separated by a layer of a second material having a high thermal resistance, such as an adhesive, e.g., a silicone rubber. The thermal filter of the invention is a thermal analog of an electrical filter which smooths out voltage or current oscillations.

Abstract: An electrical resistor comprises a tube of resistive material having a closed end. An electrical connection is made to the open end of the cylinder, and a further connection comprises a conductor passing through the open end of the cylinder and connected to the closed end. A pair of voltage-measuring connections are made to the outer surface of the cylinder.

Abstract: A glass bead separating apparatus and method are disclosed, for use with a slurry blast cabinet. The system is capable of continuous operation, so that glass beads which are broken and undersized can be separated out of the slurry along with debris from the blasting operation, on a continuous basis while blasting takes place, and the slurry can be continuously returned to the blasting cabinet in the purified condition. Used slurry is withdrawn from a hopper at the bottom of the blasting cabinet, pumped up to the top of the separator apparatus and delivered through a nozzle over an inclined screen sized to pass everything but reuseable, whole glass beads. The reuseable beads are collected in a bin, while the remainder passes down onto another, much finer screen which retains nearly everything but the liquid slurry medium, which is preferably water. The relatively clean water drops into a holding tank at the bottom of the separator apparatus, with an overflow weir provided to maintain a preselected water level.

Abstract: Alkali metal chlorites are produced by the reaction of chlorine dioxide with an alkali metal amalgam in a reaction mixture where the pH is maintained at from about 9.5 to about 11.5 by providing an excess of the alkali metal to the chlorine dioxide of at least 10 mole percent.Alkali metal chlorites obtained by this process are free of insoluble mercury and have reduced concentrations of soluble mercury as a contaminant.

Abstract: Folded cartons are individually removed from a storage magazine by a vacuum head having a large area surface in which are formed plural vacuum ports having a large combined area. The vacuum ports are connected to a low pressure, high volume vacuum exhauster. The head carries the carton to a point over a conveyor. On each side of the conveyor, a pair of suction cups are carried by an assembly mounted for combined vertical and horizontal movement. The suction cups are connected to a high pressure, low volume vacuum pump. They are moved upwardly to grip a panel on the lower surface of the folded carton and moved downwardly to open the carton and draw it into a bucket on the conveyor.

Abstract: A high pressure gas tank has its output closely connected to the input of a Joule Thomson cryostat. The valve which releases the high pressure is a plug of electrically conductive thermally degradable material located in the line. An electrical pulse is applied to the plug to cause it to degrade and to permit the flow of pressurized refrigerant gas from the high pressure gas tank through the cryostat.

Abstract: A high pressure gas tank has its output closely connected to the input of a Joule Thomson cryostat. When the tank is permitted to discharge its gas, Simon cooling of the inlet gas to the cryostat decreases the time to cool down at the cold point in the cryostat.