Sheet feeding or delivering – Feeding – With means to interrupt feeding
Patent
1991-05-29
1992-06-30
Bollinger, David H.
Sheet feeding or delivering
Feeding
With means to interrupt feeding
271277, B65H 712
Patent
active
051256428
ABSTRACT:
A feeder module for feeding sheet inserts and having a thickness detector for measuring the thickness of inserts comprises: a gripper drum disc for transporting the inserts upon its periphery; a detector caliper assembly including a pivotable arm having a follower roller borne at one end and a magnet mounted at the other end, the arm being spring loaded with the follower roller against the periphery of the gripper drum disc; and, a stationary Hall sensor to measure relative displacement between the sensor and the magnet. As an insert is transported upon the periphery of the gripper drum disc, the insert is interposed between the periphery and the follower roller and the Hall sensor senses the consequent magnet displacement as a measure of the thickness of the insert. In one embodiment, an adjustable anvil having a peripheral surface is mounted on a face of the gripper drum disc. The anvil is pre-adjusted so that its peripheral surface is disposed at a constant radius from the axis of rotation of the disc. In another embodiment, signals provided by the Hall sensor in absence of inserts are stored as reference signals. Signals provided by the Hall sensor in the presence of an insert are compared with the corresponding stored reference signal to provide an accurate measure of insert thickness regardless of eccentricity of the gripper drum disc periphery.
REFERENCES:
patent: 2621039 (1952-12-01), Kleineberg
patent: 3423900 (1969-01-01), Orsinger
patent: 3593486 (1971-07-01), Helm
patent: 3825247 (1974-07-01), Fernandez-Rana et al.
patent: 3911862 (1975-10-01), Lupkas
patent: 4043551 (1977-08-01), Morrison et al.
patent: 4079576 (1978-03-01), Morrison et al.
patent: 4177979 (1979-12-01), Orsinger et al.
patent: 4576370 (1986-03-01), Jackson
patent: 4582312 (1986-04-01), Abrams
patent: 4639873 (1987-01-01), Baggarly
patent: 4649691 (1987-03-01), Buckholz
patent: 4734865 (1988-03-01), Scullion
patent: 4741147 (1988-03-01), Noll
patent: 4798040 (1989-01-01), Haas et al.
patent: 4826149 (1989-05-01), Tucker
patent: 4982947 (1991-01-01), Milne
IBM Technical Disclosure Bulletin, vol. 23, No. 7B, Dec. 1980, pp. 3199-3200, "Automatic Forms Thickness Sensing Device", G. F. Pennell et al.
Belec Eric A.
Fallos George
Hawkes Richard B.
Lee, Jr. James S.
Noll, Jr. Harry C.
Bell & Howell Company
Bollinger David H.
LandOfFree
Feeder module with thickness detection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Feeder module with thickness detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feeder module with thickness detection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1858406