Method of making a core lock shaft

Details Method of making a core lock shaft Method of making a core lock shaft

1991-07-31

1992-02-25

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

298932, 295251, 29558, B23P 1102, B23P 1304

Patent

active

050901044

ABSTRACT:
A method of making a core lock shaft for supplying paper to a computer printer including the steps of cutting an actually elongated recess in the periphery of a cylindrical shaft midway of the shaft length and to a predetermined depth to provide a chordal bottom wall, grinding a plurality of axially extending transversely spaced slots in the bottom wall to provide a plurality of rack teeth, providing a length of pinion wire of a diameter slightly greater than the predetermined depth of the recess, drilling the ends of the pinion wire to provide axially extending bores and inserting a dowel pin in each bore with a portion of the dowel pin length projecting axially beyond the pinion wire ends, mounting the pinion wire in the recess with the pinion teeth in engagement with the rack teeth and installing clips at the ends of the recess in covering relation to the projecting portions of the dowel pins.

REFERENCES:
patent: 1122627 (1914-12-01), Milne
patent: 2798678 (1957-07-01), Dadd
patent: 4095695 (1978-06-01), Steidinger
patent: 4158446 (1979-06-01), Blake
patent: 4754915 (1988-07-01), Steidinger

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