Abstract: An improvement in an on-site foam generating apparatus which includes storage tanks for supplying the foam-forming reactants, a mixing chamber, and means for conveying the reactants through the mixing chamber. The improvement comprises means for automatically cleaning and flushing the mixing chamber. When the foam gun head containing the mixing chamber is at rest and inverted in an opening on the top of a solvent storage tank, solvent is continuously recycled through the mixing chamber. When the foam gun head is removed from the tank, a proximity switch senses the absence of metal and actuates an electrical circuit to operate a solenoid valve to divert the solvent from the mix chamber to a by-pass back to the tank. Additionally, a time delay relay is actuated which operates a solenoid valve for a predetermined period to supply purging gas to and through the mixing chamber upon removal of the foam gun head from the tank.

Abstract: An annular rigid disc and elastomeric annular ring sealing assembly for electrolytic cells with adjustable anode posts. The seal assembly has extended life, less costly construction and easier replacement due to the reduced cross-sectional area of flexible sealing material exposed to the hostile environment of the electrolytic cell.

Abstract: A rotary dryer in which the rate of the bed transport is adjustable. The dryer shell is provided with at least one set of flights and a dam ring with the dam ring being spaced downstream of the flights to provide a flight-free area. Adjustable means are provided to transport material from the flight-free area over the dam ring to the downstream side thereof upon rotation of the shell to vary the amount of material retained upstream from the dam ring. In addition, means are provided to convey material from the flight-free area to a point adjacent the upstream end of the flights. Further, a cooling section is also included comprising a plurality of flights. Means for supplying co-current drying gas may be provided at the feed end of the dryer and means for supplying counter-current cooling gas may be provided adjacent the discharge end.

Abstract: An improved means for connecting anode posts and conductors to diaphragm cells is described which utilizes a conductor comprised of a pair of split and spaced-apart copper bars having a series of pairs of adjacent round grooves, each pair of grooves being adapted to receive an anode post. The pair of bars is firmly secured to the anode posts by bolting each pair of bars together.A laminated cell base is employed comprised of a non-metallic corrosion resistant upper layer, such as rubber, secured to a lower metallic supporting layer such as steel.Sealing means are provided between a dished washer on the anode post and the upper layer, and between the anode post and wall of the cell base hole in the lower layer.

Abstract: An improved means for connecting anode posts to diaphragm cell bases is described which utilizes anode posts which are soldered at the lower end of each post in an opening in the cell base to provide a good electrical connection. A flange is positioned on the anode post above the soldered connection. The space between the bottom of the flange and the interior surface of the cell base is filled with a suitable washer to provide a liquid-tight seal.

Abstract: A method of removing a portion of a rod from a metallic anode of the type used in chlor-alkali electrolytic cells. The anode is of the type having a foraminous surface comprised of a plurality of closely spaced substantially parallel rods with the rods being welded to a supporting structure at at least two locations. The method comprises mounting a drill bit in a drill so that no more than about 0.250 inch of the free end of the drill bit extends unsupported from the chuck. The rotating drill bit is advanced through the wire to be removed at at least two locations, with the rod free of weldings between the two locations. The portion of the rod may then be removed for testing or other purposes.

Abstract: A centralizer is disclosed having outwardly bowed leaf springs held by one or more circular end bands. The end bands have two or more sections which are radially overlapped and snapped together to hold the centralizer about a cylindrical object. The end bands can also include a lock to help prevent separation of the end band sections.Also disclosed is a snap-together method of assembling a centralizer including positioning a first portion of the end band partially around a cylinder, positioning a second portion of the end band partially around the cylinder so as to overlap the first portion, interlocking the portions, pressing to leave the centralizer in position. A projection of one of the portions can be pressed against the other portion to keep the portions interlocked.Further disclosed is a circular band for attachment to a cylindrical object. The circular band has two arcuate portions, one with a radial projection and the other with a hole for receiving and interlocking with the projection.

Abstract: An apparatus for the simultaneous placement of a plurality of objects on a substantially horizontal surface is disclosed, said apparatus comprising a platform to position the objects, release mechanisms to releasably attach the objects to the platform and a system for simultaneous release of the objects.

Abstract: A centralizer having springs ends with inwardly projecting radial lugs for non-weld attachment to an end collar of the centralizer. The lugs can be rounded to allow the spring ends to rotate relative to the end collars while being longitudinally restrained.

Abstract: An apparatus for rapid removal of rubber, paint, oil and other contaminants from large planar surfaces by high pressure jetting through a mobile pattern of fan-tail nozzles. One embodiment utilizes a laser beam system to guide a mobile pattern of nozzles along a planar surface. Another embodiment utilizes a spray bar horizontally angled to a supporting vehicle. Another embodiment utilizes a protractor to measure the vertical attack angle between a mobile spray pattern and a planar surface.

Abstract: An improved apparatus for monitoring and controlling the composition of a flammable gas mixture to prevent accumulation of explosive gas mixtures in a substantially closed container. The apparatus includes a combustion chamber through which a sample stream of gas mixture is propelled. In operating the apparatus, the mixture within the combustion chamber is subjected to a series of high voltage ignition charges by means of an automotive spark plug which receives ignition charges from a conventional automotive capacitor discharge ignition system power unit and automotive ignition coil with the ignition charges being triggered by an electrically powered oscillator at a frequency preferably between 10 and 20 Hz. The electrical components and combustion chamber are housed within an explosion proof housing.

Abstract: An apparatus for the simultaneous placement of a plurality of objects on a substantially horizontal surface is disclosed, said apparatus comprising a platform to position the objects, release mechanisms to releasably attach the objects to the platform and a system for simultaneous release of the objects.

Abstract: A releasably locked closed circulation valve is introduced into a well bore as part of a drill string. The annulus between the drill string and the well bore, or casing affixed to the well bore, is sealed. Pressure is applied to the annulus and the valve unlocks and opens once the annulus pressure reaches a certain level to allow circulation between the annulus and the interior of the drill string. An optional locking device preferably locks the opened valve in the open position. A second embodiment includes a tester valve simultaneously operable with the circulation valve.

Abstract: Method and apparatus for testing wells where extremely high temperatures and pressures are to be encountered in the zone under test. The apparatus provides means for testing and trapping samples of well fluid from the formation in the zone under test for removal from the well bore with substantial reduction in sample pressure at the ground surface. The method permits confining the well fluid under test within the well bore near the zone under test to minimize the possibility of hazardous well fluids reaching the ground surface other than as trapped samples in expandable sampler chambers or otherwise safely controlled.

Abstract: A swivel joint and connection for abutting high pressure hydraulic manifolding, the joint comprising two flanged non-rotating swivel bodies with one of the non-rotating swivel bodies having a rotating swivel body journaled therein. A flanged tubular sleeve is secured between the adjacent end faces of the two non-rotating swivel bodies with the opposite ends of the tubular sleeve received respectively in counterbores formed in one non-rotating swivel body and in the rotating swivel body, respectively. A static annular seal is disposed between the first end of the tubular sleeve and the counterbore in the non-rotating swivel body and a dynamic annular seal is disposed between the end face of the opposite end of the tubular sleeve and the counterbore in the rotating swivel body. Improved composite elastomeric and metallic annular dynamic seals are also disclosed.

Abstract: A swivel joint and connection for abutting high pressure hydraulic manifolds, the joint comprising two flanged non-rotating swivel bodies with one of the non-rotating swivel bodies having a rotating swivel body journaled therein. A flanged tubular sleeve is secured between the adjacent end faces of the two non-rotating swivel bodies with the opposite ends of the tubular sleeves received respectively in counterbores formed in one non-rotating swivel body and in the rotating swivel body, respectively. A static annular seal is disposed between the first end of the tubular sleeve and the counterbore in the non-rotating swivel body. A resilient dynamic annular seal is disposed between an annular shoulder on the opposite end of the tubular sleeve and a first counterbore in the rotating swivel body.

Abstract: A self-decentralized hydra-jet tool for jet treating the face of a formation penetrated by a well bore which tool includes a jet treating head assembly adapted to be lowered into a well bore and supported therein by a flexible conduit assembly communicating between the jet treating head assembly and a source of pressurized treating fluid, the jet treating head assembly including a plurality of jet nozzles therein arranged such that a force imbalance is imparted to the jet treating head assembly by the reaction forces resulting from the jet action of the nozzles thereby urging the jet treating head assembly into close proximity to the formation face being treated.

Abstract: A valve for repetitively allowing and preventing upward fluid flow through a casing string. The valve is convertible from a locked open position permitting reverse upward fluid flow therethrough to a check valve position preventing upward fluid flow therethrough by flowing fluid downwardly through the casing to actuate an indexing J-slot mechanism interconnecting the spring-loaded valve member and the valve body assembly. The valve may be recycled to the locked open position from the check valve position an unlimited number of times through the flowing of fluid in a forward direction downwardly through the casing string.