The ore or concentrate is mixed with a strong electrolyte contg. chloride ions and maintained at up to the boiling point of the electrolyte and at an oxidn. potential of the soln. of above 750 (pref. above 850) mV wrt. a hydrogen electrode. The oxidn. potential may be controlled by addn. of a chlorine source (usually chlorine gas or hypochlorite ion) or by passage of current (pref. using a diaphra...

The invention provides for surface cleaning of wire rod and the like by holding the wire (10) under tension while passed through a die system (16) and vibrating the wire (10) transversely so that it is abraded by the surface. Cleaning liquid flushes the die bore.

PCT No. PCT/GB83/00158 Sec. 371 Date Feb. 14, 1984 Sec. 102(e) Date Feb. 14, 1984 PCT Filed Jun. 21, 1983 PCT Pub. No. WO84/00187 PCT Pub. Date Jan. 19, 1984.A capping system for a roof ridge comprised capping members, e.g., ridge tiles, connected to a reentrant portion arranged to overly ends of tiles adjacent the ridge. Filler members are disposed between the tiles and reentrant portion. Ridge i...

PCT No. PCT/AT83/00023 Sec. 371 Date Mar. 28, 1984 Sec. 102(e) Date Mar. 28, 1984 PCT Filed Jul. 28, 1983 PCT Pub. No. WO84/00570 PCT Pub. Date Feb. 16, 1984.A hitch for mounting an implement on the front end of a vehicle relative to the normal travel direction thereof has a main frame having a rear end pivoted on the vehicle about a generally horizontal rear main axis and a front end spaced forwa...

In a method and equipment for extracting surface wave energy by using flexible tubes (2) divided into sections interconnected by non-return valves (4ab-4jk) opening in the same direction, each section is divided into two chambers by means of a slack, flexible fluid-tight membrane (9), viz. 1) a first chamber or air chamber (7a-7k) which is closed on all sides and adapted to contain a gas or a gas ...

Method and means of absorbing pressure shocks using a gas in which a series of pads (1) containing a gas are stacked one on another, the stack of pads being confined in a two part member (9-10) such as a cage adapted to be contained in a housing or used without a housing, the pads (1) being pre-loaded by the two part member (9-10) and fluid loaded or mechanically loaded to absorb shock.

Disclosed is a fluid-operated piston (12) and cylinder (10) having at least one groove (32) in the inner wall of the cylinder (10) which permits flow of the working fluid back and forth between opposite sides of the piston (12) over at least a portion of the travel of the piston (12) within the cylinder (10).

A low level, microprocessor based direct digital system controller includes power supply means for providing a source of regulated electrical power to the controller. A field programmable processor means transfers selected data base information to and receives status signals from a field interface means, digitally executes control and energy management algorithms respecting those signals in accord...

Apparatus for rapidly measuring blood viscosity including a hollow column (12) of narrow bore in fluid communication with a chamber (14) containing a porous bed (16) and means for measuring blood flow rate (54, 56, 60, 62) within the column (12). The specific permeability of the bed (16) and the pressure gradient are selected so that in combination they result in an equivalent average wall shear s...

A multi-coloured display consists of an array of display elements each of which has the same number of faces (54-57). Each face is differently coloured so that each element is capable of presenting a contrast to the other elements whereby a selected pattern may be formed to provide an information display. Each display element has a body (50), and a base (52). A magnetic coil array (71-74) on the b...

Optical fibers are coated with a radiation-curable liquid, polyethylenically unsaturated coating composition consisting essentially of an organic polysiloxane having from 2 to 6 reactive side chains each of which carry a functional group providing one reactive site which has been reached to provide a single radiation-curable monoethylenically unsaturated side chain. There are about one such side c...

A cassette of the type having opposing interior surfaces relatively movable toward and away from each other to prevent and permit, respectively, movement of a photographic sheet therebetween, and having at one end an opening through which the sheet can pass along an exit path, has at its opposite end a device engageable with a corner of the sheet remote from the opening and movable at an angle wit...

Disclosed is a method and apparatus for avoiding accessing of defective locations in disks and other storage media. A disk file controller uses manufacturer-provided information about the location of defects to construct a sequentially ordered list of addresses of defective storage locations in the disk, and the list is stored in a table in the disk. During use of the disk, the disk file controlle...

PCT No. PCT/GB83/00174 Sec. 371 Date Mar. 6, 1984 Sec. 102(e) Date Mar. 6, 1984 PCT Filed Jul. 15, 1983 PCT Pub. No. WO84/00443 PCT Pub. Date Feb. 2, 1984.Electron beam apparatus includes a voltage measuring electron collector including solid electrodes with central apertures. The electrodes comprise a corrector electrode (63) maintained at zero volts, an extractor electrode (15) at about 5 kilovo...

PCT No. PCT/SE83/00273 Sec. 371 Date Mar. 5, 1984 Sec. 102(e) Date Mar. 5, 1984 PCT Filed Mar. 5, 1983 PCT Pub. No. WO84/00463 PCT Pub. Date Feb. 2, 1984.Protection device for electrical incandescent lamps provided with elements which upon switching on electric voltage limit the current strength during a switching-on interval. The device further includes a control unit with a controllable current ...

Portable turntable and drive motor assembly for use in microwave ovens. The drive motor assembly (13) is positioned to one side of the turntable platform (12) and has a low profile so that it will not interfere with the rotation of overhanging objects on the platform (12). In the principal embodiment disclosed, the drive motor is spring powered.

A lead frame and method in which an adhesive tape strip such as Mylar is rolled or pressed along the undersurface of the lead frame to contact the lead frame and bonding pad undersurfaces. Upon removal of the tags retaining the individual circuit elements to the lead frame, the parts are maintained in their existing orientation and position by the tape strip in conjunction with the lead frame. The...

The system incorporates a random number generator (24) for generating a specific key to be used during a specific interval of communication and which key is effective only after the verification of proper security data. Verification is accomplished during a preliminary operation of coding security data and a random number at one station and transmitting such data to another station for verificatio...

An automatic color control (ACC) for a digital television receiver is compatible with and is unaffected by variation of the phase of the color subcarrier signal introduced in demodulating the color subcarrier to effect control of tint. ACC is effectuated by digital gain control for scaling the digital words representing the sampled magnitudes of the color subcarrier burst signal. Quadrature demodu...