Patents Assigned to English Clays Lovering Pochin & Company Ltd.
  • Patent number: 4627727
    Abstract: A method of monitoring the deflocculation of particles in a suspension, which particles, when deflocculated, are such that they can become aligned in an applied field, by applying a beam of radiation to a region of the suspension, applying a field to the region and detecting a change, if any, in forward radiation scattering properties of the region due to the aligning of deflocculated particles, if any, of the suspension in the field.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: December 9, 1986
    Assignee: English Clays Lovering Pochin & Company, Ltd.
    Inventors: Barry R. Jennings, Harold H. Trimm, Terence W. Webb
  • Patent number: 4623398
    Abstract: An organo-clay is prepared by mixing a quaternary ammonium compound with an aqueous suspension of a smectite clay; thereafter subjecting the smectite clay/quaternary ammonium compound/water mixture to high shear mixing for a time sufficient to dissipate in the mixture at least 100 KJ of energy per kg. of dry solids in the mixture; and then dewatering the product thus obtained.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: November 18, 1986
    Assignee: English Clays Lovering Pochin & Company, Ltd.
    Inventors: Howard Goodman, Andrew R. Fugler
  • Patent number: 4514298
    Abstract: The outer tubular assembly (4) of the tube pressure filter comprises a cylindrical member (36) and, at each end, an end assembly comprising two annular members (38 and 40) which are releasably secured to the cylindrical member (36) by a split retaining ring (42). The two annular members define a cavity (62) for receiving the lip of a diaphragm (18, FIG. 1). The axially inner annular member (38) defines, with the cylindrical member (36) an annular chamber (56) for receiving fluid under pressure and an annular slot (58) for allowing the fluid to flow between the chamber (56) and the interior of the pressure filter. The split retaining ring (42) engages a groove (52) in the cylindrical member (36), so securing the end assembly to the cylindrical member (36) without the need for welding.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: April 30, 1985
    Assignee: English Clays Lovering Pochin & Company, Ltd.
    Inventors: George W. Wall, Glyn T. Jones
  • Patent number: 4507201
    Abstract: The inner assembly (2) of a tube pressure filter comprises a core (6) provided with a facing (36) made up of a plurality of laths. At the end of the core (6) there is an annular member (42, 44) which is retained in position between the facing (36) and a split retaining ring (60, 62). The retaining ring (60, 62) fits in a groove (58) in the core and is locked in position by locking elements (64) which fit into aligned recesses in the retaining ring (60, 62) and the annular member (42, 44) and are secured by screws (68).
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: March 26, 1985
    Assignee: English Clays Lovering Pochin & Company, Ltd.
    Inventors: George W. Wall, Glyn T. Jones
  • Patent number: 4339042
    Abstract: There is described a process for separating from a mixture of mineral components at least one of the components. The process comprises the steps of (a) dispersing the mixture of mineral components in water so as to form an aqueous suspension containing said mixture of mineral components, (b) mixing together said aqueous suspension and a non-polar organic liquid in which there has been dissolved or suspended an anionic collector for at least one of the components of the mixture of mineral components, the volume ratio of said aqueous suspension to non-polar organic liquid being controlled and the conditions under which said aqueous suspension and non-polar organic liquid are mixed together being such that only a small amount of energy is dissipated therein in a short time in order to effect the mixing together thereof and one liquid is uniformly dispersed in the other but a stable emulsion is not formed and (c) thereafter separating, or allowing to separate, the two liquid phases.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: July 13, 1982
    Assignee: English Clays Lovering Pochin & Company, Ltd.
    Inventors: William Windle, Charles H. Lofthouse, Howard L. Shergold
  • Patent number: 4316798
    Abstract: A separating chamber for a magnetic separator is disclosed, which separating chamber includes a canister having at least one inlet and at least one outlet and a fluid-permeable magnetisable packing material within the canister. When feed material from which magnetisable particles are to be separated is supplied to the inlet(s), it passes into the packing material by way of a fluid-permeable partition which serves to distribute the feed material over a large area within the packing material. By virtue of an externally applied magnetic field, magnetisable particles within the feed material are magnetically attracted to collecting sites within the packing material. So as to mitigate the effect of fluid passing through apertures in the partition which tends to produce high velocity jets, thereby prejudicing the separation efficiency, the partition is double-walled, the two walls being spaced slightly apart and being apertured.
    Type: Grant
    Filed: August 7, 1980
    Date of Patent: February 23, 1982
    Assignee: English Clays Lovering Pochin & Company Ltd.
    Inventors: Walter B. Jepson, Peter W. Riley, David Hocking
  • Patent number: 4304527
    Abstract: A system for pumping an abrasive or corrosive fluid at high pressure and with a variable delivery rate. The system comprises raising the pressure in a non-corrosive and non-abrasive liquid in a pressure raising means comprising pump means and at least two intermediate cylinders containing floating pistons. The pressure is transferred to the abrasive or corrosive fluid in pressure transfer vessels. A valve arrangement controls the flow of non-abrasive and non-corrosive liquid to the intermediate cylinders and return means are provided for returning the floating pistons after each stroke. The valve arrangement is controlled in dependence on the positions of the floating pistons in their intermediate cylinders.The system is particularly useful for supplying clay slurry to a high pressure plate filter press.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: December 8, 1981
    Assignee: English Clays Lovering Pochin & Company Ltd.
    Inventors: Thomas J. Jewell, John D. Webster
  • Patent number: 4301848
    Abstract: A bag suitable for containing material in bulk comprises a side wall, a bottom panel and a cover, all of woven material. The upper part of the side wall is provided with at least three lifting loops attached to the side wall at locations where the material of the side wall is folded to provide at least two overlapping layers. Each lifting loop comprises an opening and two legs. The two legs are secured together contiguously to form a double thickness which is secured to the overlapping layers, and at least one leg of each of at least two of the lifting loops extends substantially to the bottom of the side wall.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: November 24, 1981
    Assignee: English Clays Lovering Pochin & Company, Ltd.
    Inventors: John P. Beaven, Beaumont B. Varcoe
  • Patent number: 4300277
    Abstract: A tube pressure filter is provided with a filter element comprising a filter cloth sleeve which is tailored from a woven material so that the warp and/or weft filaments extend helically around the inner tubular body on which the filter element is supported whereby the filter cloth sleeve can be stretched transversely of the length thereof.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: November 17, 1981
    Assignee: English Clays Lovering Pochin & Company, Ltd.
    Inventor: Norman O. Clark
  • Patent number: 4282745
    Abstract: In order to determine the proportion of particles of less than a predetermined size in a fluid suspension, the fluid suspension is placed in a vessel (1) and is thoroughly mixed therein by mixing means (36,37). A sample of suspension is then withdrawn from a predetermined level within the vessel (1) by means of a sampling tube (9) and is transferred by way of a flexible tube (22) to a container (15). The particle concentration of this sample is then monitored by passing x-rays from a source (17) through the container (15) and detecting the emerging x-rays with a detector (18). The sample is then drained from the container (15). After allowing the suspension in the vessel (1) to settle for a time sufficient to enable particles of said predetermined size to sink from the surface of the suspension to said predetermined level within the vessel (1) according to Stokes' law, a further sample of suspension is withdrawn from said predetermined level and transferred to the container (15).
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: August 11, 1981
    Assignee: English Clays Lovering Pochin & Company Ltd.
    Inventor: Kenneth J. Burr