Abstract: A baling press, having a cavity and a bolster for reciprocating in the cavity, uses replaceable cavity liners and bolster wear strips. These liners and wear strips can be replaced without disassembling the press by withdrawing the bolster from the cavity. Also disclosed is the use of a number of high volume pumps which are switched out of the hydraulic supply circuit as the bolster nears the end of its compression stroke so as to allow the use of relatively low power prime movers.

Abstract: A baling press, having a cavity and a bolster for reciprocating in the cavity, uses replaceable cavity liners and bolster wear strips. These liners and wear strips can be replaced without disassembling the press by withdrawing the bolster from the cavity. Also disclosed is the use of a number of high volume pumps which are switched out of the hydraulic supply circuit as the bolster nears the end of its compression stroke so as to allow the use of relatively low power prime movers.

Abstract: A baling press including a cavity, having separate loading and unloading openings near its opposite ends, a bolster which moves in the cavity to reduce the volume of the cavity and compress the material loaded therein to a predetermined size, a ram connected to reciprocate the bolster within the cavity between a retracted position clear of the loading opening and an advanced position beyond the loading opening, and a door linked to a cooperating cam and a follower means mounted one to reciprocate with the ram and the other to control the motion of the door whereby movement of the bolster from its retracted position to its advanced position in a compression stroke will automatically close the door until the bolster returns to its retracted position.