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Class Information
Number: 226/75
Name: Advancing material of indeterminate length > Means to engage longitudinally spaced modifications in material > Pins on flexible belt or chain > With means to effect supplementary pin movement
Description: Device provided with means to impart motion to the prong additional to its material-advancing movement.










Patents under this class:

Patent Number Title Of Patent Date Issued
7104712 Roll sheet holder and tape printer Sep. 12, 2006
7066368 Paper web draw-in device for a web-fed printing press Jun. 27, 2006
5779378 Continuous form printer Jul. 14, 1998
5718527 Paper delivery system Feb. 17, 1998
5516220 Continuous form printer having adjustable tractors May. 14, 1996
5456399 Tractor mechanism compensating for paper taper Oct. 10, 1995
5350100 Paper feed device for the transfer station of a printing device with latent character image generation Sep. 27, 1994
5349841 Feeding apparatus for metal belting and manufacturing apparatus for fins of a heat exchanger Sep. 27, 1994
5170921 Adjustable feeder having two-part camming finger Dec. 15, 1992
5139190 Document feed tractor with height adjustable web support surface Aug. 18, 1992
5019872 Continuous-form electrophotographic printer May. 28, 1991
4974979 Twintractor Dec. 4, 1990
4951859 Anti-flutter tractor door Aug. 28, 1990
4874121 Web feed tractor belt assembly Oct. 17, 1989
4601421 Feeding means for feeding a material web in a packaging machine Jul. 22, 1986
4550623 Motorized cable mechanism for positioning tractors in a printer Nov. 5, 1985
4546908 Horizontal paper form positioner and adjusting mechanism Oct. 15, 1985
4485914 Variable drive pin projection mechanism for a belt sprocket drive wheel Dec. 4, 1984
4469263 Paper feed tractor with compensating drive pulley Sep. 4, 1984
4428519 Device for tensioning a data carrier which is moved by feed tractors Jan. 31, 1984
4422566 Arrangement for guiding print webs on cylinders of rotary printing machines Dec. 27, 1983
4397411 Feeding chain for feeding a packaging material web in a packaging machine Aug. 9, 1983
4345708 Document feed mechanism Aug. 24, 1982
4159794 Sheet feed tractor Jul. 3, 1979
4130230 Sheet feed tractor Dec. 19, 1978
4129239 Clamping devices for document tractors Dec. 12, 1978
4079876 Computer forms feeder Mar. 21, 1978
4010882 Sprocket drive and stripper arrangement for computer form feeder apparatus Mar. 8, 1977
3982677 Device for locking a movable form feed Sep. 28, 1976
3976235 Stop feed mechanism Aug. 24, 1976
3938721 Pin belt mechanism for movement of a continuous strip Feb. 17, 1976











 
 
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