Abstract: An injection molding machine having four tie bars extending through and between a movable platen and a fixed platen each of which carry a half of a mold. To enable the movable platen to withstand the forces which arise during a molding process, a pressure control mechanism including a piston in association with each tie bar is received within a corresponding recess provided in the movable platen and in order to grip the tie bars during the molding process a gripping mechanism is provided which is supported by the piston such that the gripping mechanism and the piston effectively form a single movable unit. The gripping mechanism comprises a pair of gripping jaws which are transversely movable and are moved by way of a rotatable disc which is also provided in the single movable unit.

Abstract: An injection molding machine having four tie bars extending through and between a movable platen and a fixed platen each of which carry a half of a mold. To enable the movable platen to withstand the forces which arise during a molding process, a pressure control mechanism including a piston in association with each tie bar is received within a corresponding recess provided in the movable platen and in order to grip the tie bars during the molding process a gripping mechanism is provided which is supported by the piston such that the gripping mechanism and the piston effectively form a single movable unit. The gripping mechanism comprises a pair of gripping jaws which are transversely movable and are moved by way of a rotatable disc which is also provided in the single movable unit.

Abstract: A clamping apparatus for a tiebarless injection moulding machine is arranged to absorb all of the clamping forces. The machine has a machine frame supporting a fixed platen and a movable platen which carry mould halves. The movable platen is slidable along linear guide rails as is a force transmission member or second movable platen incorporated in a drive for the movable platen. The drive comprises a hydraulic cylinder and piston unit. A clamping structure has two, parallel clamping frames, each of which is substantially U-shaped so that upstanding clamping arms are defined in each clamping frame. Each clamping arm terminates in a respective force transmission part which has a curved surface and which abuts a respective one of the fixed platen and the second movable platen. When a moulding operation is undertaken, the mould halves carried by the fixed and movable platens are brought into clamping contact.

Abstract: A hydromechanic mold clamping mechanism for injection molding machines including a movable mold carrying plate provided with hydraulic cylinder rods linked to a fixed mold carrying plate. In accordance with the invention, movable carrying plate (2) receives four sets of hydromechanic mechanisms (6) independently mounted on said movable carrying plate (2) through set of support rods (12 and 13) fixed to said movable plate (2), supporting hydromechanic sets (6) respectively.

Abstract: A process for copying and threading in automatic square cycle, applicable to and/or incorporated into engine lathes in general, includes material removing machining of parts by copying method in automatic square cycle, providing during the machining an automatic feed system for depth of cut with programmable and progressive increments through electric means, cutting of threads on a surface of the machined parts in automatic square cycle, and providing during the cutting an automatic feed system for depth of cut with programmable and progressive increments through electric means.

Abstract: Hydraulic actuator for the operation of clutch discs, consisting of a housing having a hole therein, a hydraulic cylinder having a centrally oriented hole therethrough, the hydraulic cylinder being mounted at its one end to the hole in the housing, and at its other end defining a ring shaped chamber having a u-shaped cross section, a shaft rotatably mounted in the centrally oriented hole of the hydraulic cylinder for supporting the clutch discs, a ring shaped actuator rotatably and slidably mounted in the chamber of the hydraulic cylinder for engaging the clutch discs, and means for selectively actuating the ring shaped actuator so that the clutch discs can be selectively engaged and disengaged.

Abstract: A "GEAR TRANSMISSION ASSEMBLY" or more precisely a speed change gear box with two output shafts being one main and the other secondary for driving machine tools and mechanical equipment in general, with different alternative arrangements of the speed system in a total of either seventeen different speeds, fourteen different speeds, thirteen different speeds or ten different speeds in the main output shaft consisting of a set of five slidable gears and a set of gears twice double (four gears) also slidable being one of the double sets comprised of two single gears assembled together totalling only fifteen gears and three shafts to obtain seventeen different speeds in said main output shaft. A second output shaft or secondary output shaft makes possible the output of speeds in a ratio equal to or different from the speeds of the main output shaft.

Abstract: An injection molding machine including articulating components including a movable cross arm, a set of actuator components for moving the movable cross arm, a central rod having an end and guiding the movable cross arm, a support plate attached to the end of the central rod, extraction components including exclusive guideways and a part extracting plate resting and slidable on the exclusive guideways, and another set of actuator components supported by the support plate which also supports the extraction components.

Abstract: An automatic uncoupling device for opening half-nuts for cutting threads, which half-nuts are provided on engine lathes or any other machine tools, is installed on the body of the apron of the lathe. The device includes a control lever mounted on a shaft operatively connected to the half-nuts and a disc provided with a radially extended arm. A hollow cartridge mounted in the apron has a pin slidably inserted therein. One end of the pin is in constant contact with the arm of the disc. The device further includes a trigger arranged in contact with the opposite end of the pin. A cylindrical member with the limiting pins is shiftably mounted in the apron and adapted, upon its shiftable movement, to actuate the trigger through an elongated element.