Rotary compacting machine for fibrous material

A mobile or stationary rolling-compressing compacting machine having a plurality of circumferentially arranged compression rollers confining a core forming channel, said compression rollers being power driven and flexible supported by a power transmission gear box, said power transmission gear box being allowed to make limited and adjustable rotational movement about its supporting axis and being urged by its own weight and by an adjustable biasing means into a position where said compression rollers are in a skewed arrangement relative to said core forming channel urging the axial movement of said core in said core forming channel toward the power transmission gear box and away from the discharge end of said core forming channel, said power transmission gear box having a power input shaft, said power input shaft exerting a torque urging said power transmission gear box to rotate in a direction opposite to the torque exerted by an adjustable biasing means and by the own weight of said power transmission gear box when the magnitude of the torque applied at the power input shaft is greater, said rotational movement of said power transmission gear box causing the skewed arrangement of said compression rollers relative to said core forming channel urging the axial movement of said core in said core forming channel toward the discharge end of said core forming channel and away from said power transmission gear box, an applicator apparatus for injecting or depositing chemical preservatives into the core of fibrous material as it is being formed in the core forming channel, said applicator apparatus having valve means connected to said power transmission gear box, said rotational movement of said power transmission gear box being used to control and adjust said applicator valve means by interrupting or reducing the application of chemical additives when said compression rollers are skewed relative to said core forming channel urging the axial movement of said core in said core forming channel toward the power transmission gear box and away from the discharge end of said core forming channel, and said rotational movement of said power transmission gear box being used to control and adjust said applicator valve means to initiate or to increase the application of chemical additives, such as preservatives, when said compression rollers are skewed relative to said core forming channel urging the axial movement of said core in said core forming channel toward the discharge end of said core forming channel, and away from said power transmission gear box.

A rolling-compressing compacting machine for forming loose fibrous material, into a dense cylindrical core which is cut into individual rolls, comprising:

• a roller system of a core forming channel, said core forming channel being confined by and having a plurality of at least four circumferentially spaced power driven skewed compression rollers, a cutting mechanism to sever the continuous core of fibrous material after it is formed in the roller system, into desired length individual rolls, an applicator apparatus for injecting chemical additives, such as preservatives, into the core of fibrous material as it is being formed in the core forming channel, a nozzle or injection system of said applicator being located in the hollow shaft of the power transmission gear box at the drive end of said core forming channel introducing the chemical additives at the space which is confined by said circumferentially spaced compression rollers, said nozzle or injection system being oriented to apply the chemical additives toward the partially formed and not fully compacted core of fibrous material in the core forming channel, the confined location of said nozzle or injection system of said applicator apparatus being arranged to reduce the drifting of said chemical additives and allow rapid penetration in said partially formed loose core of fibrous material in said core forming channel, said partially formed loose core of fibrous material together with the applied chemical additives being wrapped by successive layers of fibrous material as said loose core moves axially under the action of said skewed compression rollers.