Sheet material pin feed tractor mechanism

Details Sheet material pin feed tractor mechanism Sheet material pin feed tractor mechanism

1974-11-22

1976-01-06

Knowles, Allen N.

Advancing material of indeterminate length

Means to engage longitudinally spaced modifications in material

Pins on flexible belt or chain

G03B 130

Patent

active

039306011

ABSTRACT:
A drive for advancing paper or other sheet material through a printing station, or the like, including: a toothed, flexible belt carrying spaced pins for engaging the sheet material, the belt having a respective drive sprocket engaging tooth for each pin; a drive sprocket with which the belt teeth are engaged and including grooves for receiving and engaging the belt teeth; a stationsry idler guide cooperating with the drive sprocket for tensioning and guiding the belt. The support frames for the pins on the belt are designed to prevent the pins from twisting during paper and feed operations. A linear guide serves to maintain the pins in alignment; a mounting means clamps the drive sprocket to a drive shaft without play therebetween.

REFERENCES:
patent: 2179156 (1939-11-01), Mabon
patent: 3606122 (1971-09-01), Brewster et al.
patent: 3687347 (1972-08-01), Rod

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