Form feed device with variable split

Claim 2

In a form feed device of a bookkeeping machine having spaced from each other and in horizontal extension parallel means comprising, drive roll means, rotatable cam shaft means and a base, a plurality of pressure roll assemblies spacedly arranged along said parallel means, each of said assemblies comprising in combination: support means being attached to said base, two cams fixed on said cam shaft means, said cam shaft means extending through all of said assemblies, with said cams being 90* out of phase with respect to each other, Pressure roll carrying means pivotally arranged in said assembly, said pressure roll carrying means having a pressure roll at the end which faces the drive roll means and a horizontally shiftable cam roll means on the other end, said cam roll means being shiftable against either one of the two cams, and means biasing said pressure roll carrying means against the drive roll means.

Claim 3

The device as claimed in claim 1, further having means for setting said cam shaft means in different positions so as to allow a choice of two types of engagement between said cams and said shiftable cam roll maans with the result that any desired spacing condition can be created by either causing friction engagement or non-engagement between the pressure roll and the drive roll means.

Claim 4

The device as claimed in claim 2, further having a prime mover cooperating with a clockwise and a counterclockwise unidirectional clutch, said prime mover being operatively connected via said clutches with the drive roll means and the rotatable cam shaft means.

Claim 5

In a form feed device for two forms having spaced from each other and in horizontal extension parallel means comprising a rotatable drive roll, a rotatable open/close cam shaft, a pivot shaft and a base rail, a plurality of pressure roll assemblies spacedly arranged along said four parallel means, each of said assemblies comprising in combination: a support bracket which is embedded in said base rail, two cams carried on said open/close cam shaft which horizontally extends through all of said assemblies, and said cams being fixed thereon 90* out of phase with respect to each other, a pressure roll arm arranged on said pivot shaft, said pressure roll arm having a pressure roll facing the drive roll at one end and a horizontally shiftable cam roll on the other end, said cam roll being adapted to be shifted against either one of the two cams, and pressure means resiliently urging said pressure roll arm against the drive roll so that the pressure roll presses against the drive roll if the cam roll is placed to engage one of said cams, but does not press against the drive roll if it is placed against the other one of said cams.

Claim 6

In a form feed device for two forms having spaced from each other and in horizontal extension parallel means comprising a rotatable drive roll, a rotatable open/close cam shaft, a pivot shaft and a base rail, a plurality of pressure roll assemblies spacedly arranged along said four parallel means, each of said assemblies comprising in combination: a support bracket which is embedded in said base rail, two cams carried on said open/close cam shaft which horizontally extends through all of said assemblies, and said cams being fixed thereon 90* out of phase with respect to each other, a pressure roll arm arranged on said pivot shaft, said pressure roll arm having a pressure roll facing the drive roll at one end and a horizontally shiftable cam roll on the other end, said cam roll being adapted to be shifted against either one of the two cams, and pressure means resiliently urging said pressure roll arm against the drive roll so that the pressure roll presses against the drive roll if the cam roll is placed to engage one of said cams, but does not press against the drive roll if it is placed against the other one of said cams.

Claim 7

The device as claimed in claim 4, wherein said open/close cam shaft with a set of cams for each pressure roll assembly is adapted to be set in four different positions which in accordance with the respective setting of the cam rolls of the pressure roll assemblies allow the spacing of either one of the two forms, of both forms or of none of the forms.

Claim 8

The device as claimed in claim 5, further comprising a stepping motor shaft, a stepper motor thereon, a first clockwise transmitting unidirectional clutch on one side of the stepper motor, said first clutch transmitting clockwise torque to the drive roll, and a second, counterclockwise transmitting unidirectional clutch on the other side of said stepper motor, said second clutch transmitting counterclockwise torque to the open/close cam shaft.