Abstract: A metal melt sampling device comprises a support tube; and a sampling unit of refractory material mounted in the support tube. The sampling unit includes first and second portions the second portion being integral with the first portion and defining with a pair of metal plates the walls of a main sample cavity. At least one of the first and second portions is a push fit in the support tube. An inlet passage is provided to enable metal melt to pass in use from a leading end of a unit to the main sample cavity.

Abstract: Apparatus for obtaining a sample of objects is provided. The objects are carried by a first conveyor belt and are sampled by striking a lower surface of the conveyor belt to cause some of the objects to be thrown upwardly over a barrier into a receptacle. The objects from the receptacle are carried by a second conveyor which has cleats for carrying objects to a detector one-by-one. The detector operates a deflecting plate to obtain a second sample for inspection. Objects which are not deflected by the plate are returned to the first conveyor belt, while those which are deflected enter a chute for collection. The apparatus for delivering an impact to the conveyor belt preferably comprises a bell crank which strikes the conveyor belt 4 in response to a hydraulic actuator.

Abstract: A sight glass assembly (10), especially adapted for use with continuous vulcanizing lines and the like wherein visual or optical access is required, constructed so as to provide self-sealing action during assembly and continuously self-cleaning action during use. A chamber (19) having an exit flow aperture (25) adjacent the viewing element (14) is subjected to a pressurized fluid or gas flow, which is discharged across the inner face of the viewing element. The pressurized fluid or gas is supplied externally through a passageway communicating (16) with the chamber.

Abstract: A spray pattern analyzer for use in analyzing spray patterns formed by spray nozzles which are attached to an agricultural spray applicator boom. This analyzer includes a corrugated collector tray mounted on a cart. The cart has wheels for moving the collector tray through the spray pattern. The collector tray is designed so as to receive collector test tubes each being longitudinally aligned with the troughs of the collector tray. When the troughs are partially filled with spray, the collector tray is tilted so that the spray will flow into the test tubes to provide a visual indication of the pattern. The collector tray is constructed in segments to allow the collector tray to be collapsed. Further, the cart is constructed to permit an adjustment of the height of the collector tray from the surface upon which the cart rests.

Abstract: Apparatus is disclosed for transferring liquid out of a container covered by a pierceable cap using a storage unit. The apparatus includes means for moving the storage unit into an aspirating position within the capped container, means for aspirating the liquid into the storage unit, means for moving the storage unit away from such aspirating position, and means for dispensing at least a fraction of the liquid out of the storage unit. The apparatus further includes means for holding such container during all movement of the storage unit away from its aspirating position.

Abstract: In an electron beam lithography apparatus a capacitance height gauge is used to determine the distance between a reticule and electron optics. In order to calibrate the capacitance gauge an optical interferometer, including a mirror are mounted on the same axis as the capacitance gauge. The mirror is moved a predetermined distance so that the movement distance measured by the capacitance gauge and the interferometer can be compared.

Abstract: The permeability of samples, especially rock samples, is determined by immersing the sample in a dye solution to permit dye to diffuse into the sample, rinsing remaining dye solution from the surface and then either placing the rinsed sample in a leachback solution to permit dye to diffuse out into the leachback liquid or else simply allowing the dye to diffuse out onto the surface of the sample, thereby causing a coloration indicative of the permeability of the sample. The method can be practiced on slab samples or drill cuttings.

Abstract: A sampler for insertion in a flow duct carrying a stream of dry particulate material, including a housing with a sample head traversing the stream of flowing material and being movable within the head across the breadth of the stream of flowing material; a rotary disc in the bottom wall of the housing mounting the sample head; the mounting disc having a protective flange or ledge over the seal and thrust bearing at the periphery of the disc as to fully protect the seal and bearing ring against deteriorating effect of the particulate material; a sample spout extending through and rotatably mounted in the rotary mounting disc and being connected with the sample head for delivering samples of the material to the exterior of the housing; a rotary actuator for revolving the disc first in one direction and then the other; and a slide rod attached to the sample spout and moving through a slide block maintaining the sample head in predetermined upstream orientation facing the inlet of the housing.

Abstract: There is disclosed an arrangement for exchanging measuring and/or sampling probes capable of being slipped on to a holding means arranged on the lower end of a vertically movable lance with friction-tight contact. It includes a grab clamping the probe and movable from an operation position below the lance into a position laterally therebeside. In order to be able to slip on a probe to a holding means assuming a position that deviates from the ideal position, without damage to the holding means and the probes, the grab is mounted on the arrangement by universal joint means.

Abstract: Method for continuous sampling of liquified natural gas effluent from a spill pipe, vaporizing the cold liquified natural gas, and feeding the vaporized gas into an infrared detector to measure the gas composition. The apparatus utilizes a probe having an inner channel for receiving samples of liquified natural gas and a surrounding water jacket through which warm water is flowed to flash vaporize the liquified natural gas.

Abstract: A non-splash molten metal sampler has a refractory fiber body which defines a cylindrical mold cavity with sand-resin plugs providing end walls for the cavity. The plugs can be formed in place. The fiber body is easily machined to provide a side entry port and grooves for pin sample tubes and thermocouple wires.

Abstract: The surface hardness of material is tested by the extent of penetration of a tool thereinto by moving the tool onto the surface from a low to a high value of compressive force and then back to the low value by reversible rotative movements with the penetration being determined from the difference between the two rotative movements, in which the movement may be related to incremental rotative steps with the difference in the number of steps determining the extent of penetration and in which the movement may be automatically performed. The improvements comprise differential thread means comprising a rotatable part and means for revolving the rotatable part to effect linear movement of the penetrating end, and flexure means allowing free axial motion but preventing rotation of the rod (21) therebetween.

Abstract: A process and device for extracting soil samples, wherein a core sample is extracted from the ground which is to be analyzed and part of the soil is removed from the core for subsequent analysis or other after-treatment. The core sample is removed from the ground and enclosed in an encasing (32, 34) in which the core sample remains in the form and position it had in the ground prior to extraction. The required volumes of soil samples are removed via openings (46) in the encasing (32, 34) at pre-determined points, and collected for further treatment.

Abstract: A method and apparatus for supporting concrete testing samples comprising providing closely machined aluminum, steel, or suitable molded plastic caps for the respective circular ends of a cylindrical concrete testing sample and removable, reusable flanged molded elastomeric pads which are inserted in a recessed cavity in each cap prior to positioning of the cap on the respective end of the concrete cylinder. Each pad has a space between the bottom and the side to provide at least an equivalency between sulfur capped cylinder compression load strengths and those generated by the above system over the wide range of compression load values normally occurring in this particular test.

Abstract: A device for the pick-up of measured values having a frame forming a first measurement reference and an element movable relatively to the frame and forming a second measurement reference. The device includes a carrier connected to the element forming the second measurement reference and a mechanical/electrical conversion system connected between the frame and the carrier. The conversion system produces a magnetic field directed at right angles to the direction of movement of the carrier and has at least one air gap within which the carrier is arranged to move at right angles to the magnetic field. Two pairs of field plates are arranged in the air gap and when the carrier is moved the extent of penetration of the pairs of the field plates by the magnetic field is changed. The device also includes a bridge circuit by which the field plates are connected. The bridge circuit includes in one diagonal thereof a device for the display of measured values and is connected across the other diagonal thereof to a d.c.

Abstract: A read-write head is provided with a plurality of piezoelectric transducers which produce signals related to its movement as it flies over an adjacently rotating recording disk. By filtering these signals to determine their spectral components in low, medium and high ranges, hard contacts between the head and disk, disk wear or roughness and head movement can be determined.

Abstract: A multi-pipette system of the type having sample volume determined by size of cavities into which flexible membrane portions are drawn, provides a microporous block with the cavities formed in it for drawing the flexible membrane into the cavities when pressure is reduced above the microporous block. Slide-in-place location and replacement is provided for supply containers, disposable tube arrays for drawing up samples and for expelling them, and for flexible membranes. In an embodiment microporous block cavity size is adjustable.

Abstract: A device for performing soil inspection by means of a tube to be driven into the soil, comprising driving means which grip around the tube substantially coaxially said driving means comprising either a cylinder with a hollow piston rod or pairs of opposed driving wheels. Auxiliary means are provided for facilitating soil inspection operations with such a device, such as an improved pressing and pulling head, and means for signal transfer from a measuring cone towards measuring instruments at the soil surface.

Abstract: Means and method for making rapid determinations of the strength of metal materials from hardness evaluations of the materials. The means comprises at least two indentors for making impressions in a metal material, the indentors having predetermined dimensions. Apparatus for mechanically directing the indentors against the material are provided and mechanically connected to the indentors. The driving apparatus translates the indentors against the material under predetermined loads and in a manner that makes impressions in the material, the geometric configurations of which correspond to the configurations of the indentors. Means are provided for characterizing the respective geometries of the impressions, and means are provided for utilizing the dimensions of the indentors, the values of the applied loads, and the respective geometries, for calculating the yield and/or tensile strength of the material therefrom.

Abstract: A high pressure seal assembly for use with an insert cover positioned in a downhole tubular housing, the assembly having a flange which is deformable by the pressure differential between higher pressure on the exterior of the insert cover and the lower pressure on the interior of the insert cover. A portion of the flange is deformed to mate against the tubular housing. In a preferred embodiment, the flange has two legs, one being attached to the insert cover and the second being the deformable portion having deformable spacer material positioned between the second leg of the flange and the housing.