Abstract: An operating cam for use with a hardness tester may comprise: first and second cylindrical journal portions for respective disposition with first and second cylindrical holes provided through a housing of the hardness tester; a substantially cylindrical cam portion of smaller diameter between the journal portions and the axis of which is eccentric to the axis of the journal portion; an end portion adjacent the second journal portion having a common axis therewith and engageable for rotating the cam member about the common axis between no load, minor load and major load positions; and stop portions adjacent the end portion engageable with corresponding stop portions on the tester housing for limiting rotation of the operating cam between the no load and major load positions.

Abstract: Mounting apparatus for use with a hardness tester which includes a reciprocating penetrator for measuring hardness properties of the materials to be tested. The mounting apparatus may comprise: an elongated base member having parallel upper and lower flat surfaces and provided with a hole substantially midway between the ends thereof; substantially parallel elongated shoe members attached to the base member adjacent its lower surface for contact with the material to be tested; and components for removably attaching the hardness tester to the base member so that its penetrator is disposed in the base member hole for reciprocal movement therein.

Abstract: Adjustable support apparatus for temporarily supporting a door frame or the like in a fixed relationship with one or more fixed supports suitably spaced therefrom, comprising: an elongated brace assembly including first and second telescoping members movable between contracted and extended positions and a setting device for fixing the first and second members in one of the contracted and extended positions; a first connector assembly at one end of the brace assembly adapted for removable attachment to a door frame; and a second connector assembly at the other end of the brace assembly adapted for removable attachment to one of the fixed supports.

Abstract: Apparatus for separating solid materials from mixtures having solid materials therein, including a wire mesh screen the two opposing edges of which are retained by elongated rigid retainer assemblies against which oppositely directed forces may be applied for placing the screen in tension. Each of the rigid retainer assemblies may comprise: a first rigid retainer member having an elongated flat base portion from one edge of which upwardly projects a curved rib portion providing an elongated arcuate convex surface; a second rigid retainer member having an elongated base portion from one edge of which upwardly projects a curved rib portion providing an elongated arcuate concave surface; and a third rigid retainer member including a flat elongated base portion from one edge of which upwardly projects a rib portion for disposition between the elongated arcuate convex surface of the first retainer member and the elongated arcuate concave surface of the second retainer member.

Abstract: A bracket for offset anchoring a fence post comprising a vertical leg member, a horizontal leg member, a post attachment means, and a means for anchoring the bracket to a new concrete foundation.

Abstract: A flexible union for connecting together two rigid tubular sections capable of oscillating with respect to each other, the union comprising elastic annular members each having its inner and outer faces connected to annular spherical surfaces bordering a gap separating from each other two rigid bodies each fast with or connected to a respective tubular section. Each elastic element is in one piece and adheres to the spherical annular surfaces between which it is located and the elastic elements delimit in said gap at least one closed annular chamber completely filled with a liquid which is little or not compressible.

Abstract: System for the remote control, the maintenance or the fluid injection for a submerged satellite well head comprising a platform equipped with equipment usable for the remote control, maintenance or fluid injection for the well head and located substantially perpendicular to the well head, at least one pipeline connecting the platform to the well head, a control device located on the well head or in the immediate vicinity of the latter, and at least one remote control line connecting the platform to the remote control device, wherein the platform is on the surface and the pipeline is connected to the platform by a connector and to the well head by a spherical articulation equipped with a flexible joint.

Abstract: Mounting apparatus for attaching a dial gauge to the housing of a hardness tester in which is carried a load cell. The dial gauge may have a housing in which is carried an operating mechanism and a dial indicator and from the base of which extends a plunger for engagement with the plunger rod of the load cell and responsive to movement thereof for actuating the operating mechanism and the dial indicator. The mounting may comprise: a cap member attachable to one end of the tester housing having a central aperture therethrough and a support member attached to the cap member to which is attached the dial gauge so that the dial gauge plunger is centrally and freely disposed in the cap member aperture. The cap member is attachable to the tester housing so that the dial gauge plunger engages the plunger rod centered in the load cell in a predetermined relationship but is removable so that the cap member, support member and dial gauge may be removed from the tester housing without relative movement therebetween.

Abstract: A well washing tool which may comprise: a tubular mandrel; first and second packer assemblies carried on the mandrel at opposite ends thereof; an outer tubular body surrounding the mandrel between the packer assemblies; an annular chamber between the mandrel and the surrounding tubular body; and a valve assembly carried within the annular chamber. The tubular mandrel is adapted for connecting the tool in a pipe string extending to the surface of the well and the lower end may be adapted for blocking flow of fluids from the pipe string through the mandrel flow passage. Ports are provided in the walls of the mandrel and the tubular body permitting fluid communication between the mandrel flow passage and the exterior of the tool. The valve assembly prevents such fluid communication by blocking one or more of the ports.

Abstract: A fertilizer injector comprising in combination a fertilizer storage hopper having an offset bottom portion, an elongated tubular centralizer offset from the hopper and in axial alignment with the bottom portion, an injector-rod mounted in the tubular centralizer and bottom portion, whereby downward movement of the injector rod forms a hole of selected depth in the surface of the soil and upward movement of the injector rod allows a selected quantity of granular fertilizer to fill the hole and another downward movement closes off an outlet in the offset bottom portion stopping the flow of fertilizer from the hopper, and a means for locking the injector rod in any desired position. The fertilizer injector also has a filter screen and lid to prevent undesirable material from entering the hopper.

Abstract: Apparatus for connecting a cylindrical first member to a second member which may comprise: a tubular body adapted to receive one end of the first member and for connection to the second member; an annular seal assembly carried by the body and movable from a relaxed position, in which one end of the first member may be axially received therein, to a compressed position, sealingly engaging one end of the first member; a seal load ring engageable with the seal assembly and axially movable relative to the body for moving the seal assembly to its compressed position; a gripper assembly axially spaced from the seal assembly and movable from a radially expanded position in which the first member may be axially received by and displaced from the body, to a radially contracted position gripping the exterior of the first member and preventing its axial displacement from the body; and a gripper load ring engageable with the gripper assembly and axially movable relative to the body for moving the gripper assembly to its

Abstract: Coring apparatus for obtaining core samples which may comprise: an outer barrel assembly, the lower end of which is adapted for connection to a core bit, the upper end of which is adapted for connection to a drill string; an inner barrel assembly concentrically disposed within the outer barrel assembly and having first and second axially spaced and fluid communicating chambers therein; and valve means carried by the inner barrel assembly and movable from an open position, in which a core sample may be received by the first chamber, to a closed position, sealingly enclosing the core sample within the first chamber.

Abstract: The connection is of the Cardan type comprising a rigid intermediate structure, a first modular assembly of flexible connection elements placed between the intermediate structure and the first rigid body to allow relative rotation of the structure and of the first rigid body about a first axis x--x, and a second modular assembly of flexible connection elements placed between the intermediate structure and the second rigid body to allow the relative rotation of the structure and of the second rigid body about a second axis. The first and second assemblies comprise flexible bearings and abutments fabricated, at least partly, from a resilient material.This device is particularly suitable for anchoring a floating platform to the sea bed.

Abstract: Boat bailing apparatus for removing water from the interior of a boat comprising: a tubular housing adapted for attachment to the transom of the boat providing a passage through which fluid may pass from the interior of the boat to the exterior thereof; an annular seat near one end of the housing; and a ball closure carried within the housing for movement between a position engaging the seat, preventing fluid flow through the passage, and positions not engaging the seat, permitting fluid flow. A cage assembly may be provided within the housing to confine the ball closure for limited axial movement in the housing passage.

Abstract: A tool for handling elements to be installed in or removed from a pressurized vessel may comprise: a housing adapted for connection and fluid communication with the pressurized vessel; a carrier assembly disposed in the housing for reciprocation therein to which elements may be attached for installation in or removal from the pressurized vessel; and first and second operator assemblies carried by the housing. The first operator assembly is engageable with the carrier assembly for reciprocation thereof between first and second terminal positions. A second operator assembly is engageable with the carrier assembly for selective rotation of the elements attached thereto.

Abstract: An annular bore seal for sealing between connected first and second coaxially aligned members, each of which is provided with an internal frusto-conical seating surface tapering inwardly from their adjoining ends. The seal comprises: an inner cylindrical surface; annular end surfaces at opposite ends thereof; frusto-conical outer sealing surfaces adjacent each of the end surfaces and tapering outwardly therefrom; an outer alignment ring surface midway between the end surfaces; and annular relieved areas between the alignment ring surface and the frusto-conical sealing surfaces.

Abstract: Disclosed is a seismic data gathering system for use in well drilling operations. A seismic pulse generator may be placed in the drill string near the drill bit and advanced in the well for generation of seismic pulses at any depth. An array of seismometers, rotationally symmetric about the well, may be arranged at the surface to detect both pulses refracted above the seismic pulse generator and pulses reflected at interfaces below the generator. According to the method of the invention, the refracted and reflected seismic pulse data may be reduced and analyzed to determine the drilling direction of the drill bit, the lithology through which the drill is passing, the position and approximate shape of nearby oil or gas reservoirs otherwise missed, and to look ahead of the drill bit to determine geologic conditions in advance of the drilling.