Abstract: An inserter system having an improved control system. The system includes a sheet inserter system and one or more web modules, for, receiving a web of forms, scanning the forms for information, storing and retransmitting the information, separating the web into discrete forms, and feeding the forms for further processing by the sheet inserter system. The sheet inserter system adds additional sheets to the forms inserts the batches so formed into envelopes and may imprint the envelopes with metered postage. The control system includes a supervisory controller which receives the control information and controls the sheet inserter system and web modules in accordance therewith. A buffer is provided to transfer control information from the supervisory controller to the sheet inserter system.

Abstract: A method and associated apparatus for providing a universal multi-station document inserter, including the steps of providing a plurality of feeder stations for feeding documents in response to signals from a central processor, providing each feeder station with a unique address, storing feeder programs in distributed processors associated with the feeder stations which provide instructions to each feeder station for feeding documents, storing a supervisory program in the central processor which is capable of providing address and command signals to the distributed processors of the feeder stations, and interconnecting the central processor and the distributed processors for the transmission of signals so that upon receipt of the proper address and command signals at the feeder stations, the feeder stations will provide certain document feeding functions under control of the central processor in accordance with instructions programmed into the distributed processors associated therewith.

Abstract: A method and associate apparatus for providing a universal feeder interface circuit for a multi-station document inserter having a plurality of document feeder stations or modules and a central processor which stores a supervisory program is provided. Each interface circuit has a unique address and a distributed processor which stores feeder programs containing instructions for operating a variety of different types of feeders. The interface circuit, in response to address and command signals received from the central processor provides operating instructions from the programs stored in the distributed processor to its feeder station to operate the feeders in a manner pre-selected by the user.

Abstract: A method and associated apparatus are used for customizing a multi-section document inserter which uses a standard program which defines all the executable routines for the document inserter. The method comprises the steps of providing user inputs as to the desired configuration and operation of the multi-station document inserter, translating the user inputs into a specific data table for use with the standard program in the multi-station document inserter, and incorporating the specific data table into the multi-station document inserter for selecting the executable routines of the standard program to be used in order to provide a multi-station inserter which is customized to accomplished particular user requirements.

Abstract: Tungsten monocarbide is prepared by sparging a molten composition comprising an alkali metal halide and an oxygen compound of tungsten with a gas comprising a gaseous hydrocarbon, particularly methane.

Abstract: Metal values are recovered from ore concentrates by forming a sulfide matte, grindng the matte, leaching with sulfuric acid at elevated temperature to selectively extract nickel and iron, and roasting and leaching the residue with dilute sulfuric acid to selectively extract copper. The residue contains a high concentration of platinum, palladium and gold.

Abstract: Metal values are recovered from ore concentrates by forming a sulfide matte, grinding the matte, leaching with sulfuric acid at elevated temperature to selectively extract nickel and iron, and leaching the residue with an acidic aqueous ferric or cupric salt to selectively extract copper. The residue contains a high concentration of platinum, palladium and gold.

Abstract: Metal values are recovered from ore concentrates by means of dry grinding, followed by a two-stage leaching process in which the ground concentrate is first leached with sulfuric acid at a temperature of about 90.degree. to 100.degree. C. to selectively leach nickel and iron. The residue is then leached with a solution comprising sulfuric acid and NaOCl or H.sub.2 O.sub.2 to extract platinum, palladium, copper and gold.

Abstract: Lanolin is employed as a modifier for froth flotation utilizing conventional collectors such as fatty acids, kerosene, and the like. Lanolin added to the system acts as a depressant which assists in the selectivity of the process for the desired mineral or inhibits the flotation of gangue materials. Scheelite ore flotation is substantially improved using lanolin in addition to a conventional collector such as tall oil.

Abstract: Tungsten is extracted from hot springs tungsten ores by means of a process comprising (1) calcining the ore, (2) quenching the calcined ore in aqueous alkaline solution and (3) treating the resulting slurry at elevated temperature and pressure to extract the tungsten values from the ore.

Abstract: Pigment TiO.sub.2 is prepared from sodium titanate by mixing with sulfuric acid, calcining at from 600.degree. to above about 900.degree.C, thereafter quenching in water, dissolving out the soluble sodium sulfate and recovering TiO.sub.2. By operating at 900.degree.C and above, artificial rutile is obtained. Instead of sulfuric acid, other mineral acids, their anhydrides, ammonium and alkali metal acid salts of said acids and borax may be employed.

Abstract: Tungsten monocarbide is prepared by sparging a molten composition comprising an alkali metal halide and an oxygen compound of tungsten with a gas comprising a gaseous hydrocarbon, particularly methane.