Abstract: The specification discloses a clutch and brake system wherein low and high speed clutch assemblies are mounted about a rotatable shaft. A brake assembly is disposed between the low and high speed clutch assemblies and includes friction surfaces mounted about the shaft. The brake assembly is normally biased to an engaged position to prevent rotation of the shaft. A housing is disposed about the brake assembly and annular pistons are slidably mounted in the housing on opposite sides of the brake assembly. The pistons are operable in response to fluid pressure to selectively disengage the brake assembly while engaging a selected one of the clutch assemblies. Structure is provided to interconnect the pistons to prevent simultaneous engagement of both the clutch assemblies. Structure is also provided to sense a temperature above a predetermined level in the pistons in order to cause deenergization of the clutch and brake system.

Abstract: High and low speed clutch assemblies are spaced apart along a rotatable shaft. Each of the clutch assemblies includes a plurality of annular friction plates which may be engaged by movement of annular pistons. A brake assembly is mounted between the clutch assemblies and includes friction surfaces carried about the rotatable shaft and annular brake plates mounted on opposite sides of the friction surfaces. A stationary housing is mounted about the brake assembly. Adjacent ones of the pistons and the brake plates are interconnected, such that the friction surfaces of the brake assembly are disengaged when either of the clutch assemblies are engaged by application of fluid pressure. The pistons and brake plates are spring-loaded such that when both of the clutch assemblies are disengaged, the brake plates move to engage the friction surfaces with the stationary housing to brake the shaft.

Abstract: The specification discloses a low inertia clutch and brake system which includes a rotatable shaft and high speed and low speed clutch assemblies spaced apart along the shaft. A brake assembly is disposed between the high and low clutch assemblies and includes a stationary housing enclosing friction surfaces mounted about the shaft which are normally engaged with the housing to prevent rotation of the shaft. A pair of pistons are slidably mounted in the housing and are operable in response to fluid pressure to selectively disengage the brake assembly and to engage one of the clutch assemblies. Structure is provided to selectively apply fluid pressure to either of the pistons. The pistons include spring carrying rods which extend through the housing in order to normally bias the pistons toward the housing to normally engage the brake assembly.

Abstract: The specification discloses a transmission system for a press. A rotatable shaft is mounted within an oil lubrication housing and a flywheel is rotatably mounted in the housing about the shaft. A shaft extends through the oil housing for transmitting rotation to the flywheel within the oil housing. Low and high speed clutch assemblies are spaced apart along the shaft and include pistons selectively movable to engage the clutch assemblies. Gears are provided to transmit rotation from the flywheel to the clutch assemblies. A brake assembly is mounted between the clutch assemblies and includes friction surfaces carried about the shaft. The brake assembly also includes a stationary housing mounted about the friction surfaces and engaging the friction surfaces to brake the shaft when the friction surfaces are engaged. Brake plates are mounted on opposite sides of the brake assembly for causing engagement of the friction surfaces.

Abstract: High and low speed clutch assemblies are spaced apart along a rotatable shaft. Each of the clutch assemblies includes a plurality of annular friction plates which may be engaged by movement of annular pistons. A brake assembly is mounted between the clutch assemblies and includes friction surfaces carried about the rotatable shaft and annular brake plates mounted on opposite sides of the friction surfaces. A stationary housing is mounted about the brake assembly. Adjacent ones of the pistons and the brake plates are interconnected, such that the friction surfaces of the brake assembly are disengaged when either of the clutch assemblies are engaged by application of fluid pressure. The pistons and brake plates are spring-loaded such that when both of the clutch assemblies are disengaged, the brake plates move to engage the friction surfaces with the stationary housing to brake the shaft.