Abstract: The vibrating screen have a screen deck, two sidewalls and a mechanical vibrator comprising two shafts, rotating at the same rotation and in opposite directions, each one of the end portions of each shaft carrying an eccentric weight and being supported on bearings which are supported in the sidewalls of the vibrating screen. The shafts have their end portions, adjacent to each other, supported on bearings mounted to a same bearing case fixed to beams, transversal and having opposite ends fixed to the sidewalls of the vibrating screen. Each end portion of a shaft carries an eccentric weight with a total mass different from that one of the eccentric weights of the end portions of the other shaft, said shafts rotating in determined phases, defining the inclination of the major axis of an elliptical movement imparted to the screen deck.

Abstract: The vibrating screen have a screen deck, two sidewalls and a mechanical vibrator comprising two shafts, rotating at the same rotation and in opposite directions, each one of the end portions of each shaft carrying an eccentric weight and being supported on bearings which are supported in the sidewalls of the vibrating screen. The shafts have their end portions, adjacent to each other, supported on bearings mounted to a same bearing case fixed to beams, transversal and having opposite ends fixed to the sidewalls of the vibrating screen. Each end portion of a shaft carries an eccentric weight with a total mass different from that one of the eccentric weights of the end portions of the other shaft, said shafts rotating in determined phases, defining the inclination of the major axis of an elliptical movement imparted to the screen deck.

Abstract: A board drying apparatus includes a pair of fork conveyors provided in a housing and disposed vertically with spacing therebetween. Each fork conveyor has a number of extension arms fixed at to said fork conveyor to extend substantially at right angles therewith. These extension arms of both of the fork conveyors are associated with each other in such a manner that each of the extension arms of one of the fork conveyors is arranged at the same level as the associated extension arm of the other of the fork conveyors and that the extension arms on the inner side of each fork conveyor are opposed to each other and move downwardly at the same speed. A board to be dried is supplied to the uppermost horizontal extension arms at the inner sides of the fork conveyors and is carried downwardly by the extension arms during which the board is dried by heated air circulated through space between the fork conveyors in the lengthwise direction of the boards.

Abstract: A resin composition consisting essentially of (A) an aromatic polyester-polycarboxylic anhydride and (B) a polyamide. An article molded from the resin composition exhibits high heat resistance, mechanical properties and moldability. It is particularly resistant to cracking upon impact and is also resistant to breaking at a thin-walled portion.

Abstract: A resin composition comprising(A) an aromatic copolyester derived from (i) a mixture of terephthalic acid and isophthalic acid and/or the functional derivatives thereof and (ii) a bisphenol and/or the functional derivatives thereof;(B) a polyamide; and(C) an ionomer.Molded articles prepared from the resin composition exhibit superior thermal stability, mechanical properties and molding characteristics, especially superior impact characteristics and relatively thin molded articles are resistant to flexing.