Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
274 words
A sheet transfer cylinder comprising, a cylinder shaft rotatably journaled in a frame, a sheet front edge gripper shaft positioned in parallel spaced relation to said cylinder shaft and supported by said cylinder shaft for rotation therewith, sheet front edge gripper means secured to said sheet front edge gripper shaft and arranged to engage the front edge of a sheet, means to rotate said sheet front edge gripper shaft to open and close said front edge gripper means at preselected radial angular positions of said cylinder shaft, a sheet tail edge gripper shaft positioned in parallel spaced relation to said cylinder shaft and said front edge gripper shaft, means supporting said tail edge gripper shaft for rotation with said cylinder shaft, sheet supporting means having a cylindrical sheet supporting surface, tail edge gripper means secured to said tail edge gripper shaft and arranged to engage the tail edge of a sheet positioned on said sheet supporting surface, means to open and close said tail edge gripper means at preselected radial angular positions of said cylinder shaft including a tail edge gripper means actuator shaft positioned in spaced parallel relation to said tail edge gripper shaft and a cam member rotatably positioned on said tail edge gripper shaft, lever means connecting said actuator shaft and said cam member, means to rotate said actuator shaft and said cam member relative to said gripper shaft to thereby open and close said tail edge gripper means, and means to extend said tail edge gripper means radially outwardly relative to said cylinder shaft beyond the periphery of said sheet supporting surface at preselected angular positions of said cylinder shaft.
Claim 2
Dependent Claim
274 words
A sheet transfer cylinder comprising, a cylinder shaft rotatably journaled in a frame, a sheet front edge gripper shaft positioned in parallel spaced relation to said cylinder shaft and supported by said cylinder shaft for rotation therewith, sheet front edge gripper means secured to said sheet front edge gripper shaft and arranged to engage the front edge of a sheet, means to rotate said sheet front edge gripper shaft to open and close said front edge gripper means at preselected radial angular positions of said cylinder shaft, a sheet tail edge gripper shaft positioned in parallel spaced relation to said cylinder shaft and said front edge gripper shaft, means supporting said tail edge gripper shaft for rotation with said cylinder shaft, sheet supporting means having a cylindrical sheet supporting surface, tail edge gripper means secured to said tail edge gripper shaft and arranged to engage the tail edge of a sheet positioned on said sheet supporting surface, means to open and close said tail edge gripper means at preselected radial angular positions of said cylinder shaft including a tail edge gripper means actuator shaft positioned in spaced parallel relation to said tail edge gripper shaft and a cam member rotatably positioned on said tail edge gripper shaft, lever means connecting said actuator shaft and said cam member, means to rotate said actuator shaft and said cam member relative to said gripper shaft to thereby open and close said tail edge gripper means, and means to extend said tail edge gripper means radially outwardly relative to said cylinder shaft beyond the periphery of said sheet supporting surface at preselected angular positions of said cylinder shaft.
Claim 3
Dependent Claim
30 words
A sheet transfer cylinder as set forth in claim 1 in which said means to extend said tail edge gripper means includes, means to rotate said tail edge gripper shaft.
Claim 4
Dependent Claim
51 words
As set forth in claim 1 which includes, means to move one of said gripper shafts toward and away from the other of said gripper shafts to increase and decrease the circumferential distance around said sheet supporting means and between said front edge gripper means and said tail edge gripper means.
Claim 5
Dependent Claim
67 words
As set forth in claim 3 in which said means supporting said tail edge gripper means includes, support means mounted on said cylinder shaft and extending radially therefrom, said support means rotatable about said cylinder shaft, and means to rotate said support means on said cylinder shaft through a preselected radial angle to move said tail edge gripper shaft towards and away from front edge gripper shaft.
Claim 6
Dependent Claim
82 words
As set forth In claim 4 in which said means to rotate said support means includes, a gear segment on said support means, an adjusting shaft positioned parallel to said cylinder shaft, second support means nonrotatably supporting said adjusting shaft relative to said cylinder shaft, said adjusting shaft rotatably supported in said second support means, gear means nonrotatably secured to said adjusting shaft and meshing with said gear segment, and means to rotate said gear means and thereby rotate said support means.
Claim 7
Dependent Claim
108 words
As set forth in claim 1 in which said tail edge gripper means includes, a first arm member having a rear end portion nonrotatably secured to said gripper shaft and an upstanding gripper pad end portion, a second arm member having a depending portion and a gripper pad end portion, said second arm member depending portion pivotally connected to the intermediate portion of first arm member with said gripper pad end portions in overlying relation, resilient means urging said pad end portion away from said other gripper pad end portion, and cam means having a cam surface arranged to maintain said gripper pad end portions in abutting relation.
Claim 8
Dependent Claim
39 words
As set forth in claim 6 which includes, a plate member secured to said arm member, a cam follower connected to an end portion of said plate member, a cam member rotatably positioned on said tail edge gripper shaft.