Cutting – Processes – Cutting wall of hollow work
Patent
1990-04-17
1993-09-14
Yost, Frank T.
Cutting
Processes
Cutting wall of hollow work
834671, 83588, 83633, 83689, 83948, B26F 102
Patent
active
052438872
ABSTRACT:
A punching tool for piercing a hole through the substantially parallel, spaced apart plates of a data storage disk casing uses a die which supports one of the plates and an elongated punch which pierces through the plates in succession. The disk is placed on a tray on the punch's base, and a drive lever is pushed downward to drive the punch through the casing plates. The punch is guided so that it moves along its axis of elongation and has a cutting surface at its end with a point to begin the hole in each of the plates and a trailing edge spaced apart from the point which completes the hole. The distance between the point and the trailing edge is great enough to allow the point to begin a hole in a succeeding plate before the trailing edge completes the hole in the previous plate.
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Double Disk Ad, Biological Engineering, Inc., Computer Shopper, Mar. 1990, p. 440.
Rada Rinaldi
Yost Frank T.
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