Sensor for cyclically scanning the height of a pile

Details Sensor for cyclically scanning the height of a pile Sensor for cyclically scanning the height of a pile

1994-04-14

1995-03-21

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Pack holders

271152, 271103, B65H 116

Patent

active

053989244

ABSTRACT:
A feeler for cyclically sensing the pile height of a feed pile in a sheet-fed machine, in particular a printing machine, having a lever drive linkage with a sensing roller, which at least during paper travel is in constant touch contact by means of a spring with a cyclically drivable drive cam; having a four-bar guide linkage with two levers, disposed one above the other and each with one end pivotally supported on the frame, which levers are each pivotally supported by their other lever end, spaced apart from one another, on a coupler, wherein a feeler foot for sensing the pile height is secured to a downward-extending vertical extension of the coupler; having a carrier stop, which is secured to the drive linkage; having a stop face on the guide linkage, which face is embodied and disposed in a fashion corresponding to the carrier stop for cyclically establishing touch contact for raising the feeler foot; and having a spring, one spring support of which is secured in a manner fixed to the machine and whose other spring support is secured to the guide linkage, and whose spring force presses the stop face in the direction toward the carrier stop.

REFERENCES:
patent: 3306607 (1967-02-01), Schwebel
patent: 4786043 (1988-11-01), Jiruse et al.
patent: 5052672 (1991-10-01), Hotii
patent: 5094439 (1992-03-01), Renner et al.

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