Threaded – headed fastener – or washer making: process and apparat – Process – Making washer
Patent
1996-10-07
1998-05-26
Larson, Lowell A.
Threaded, headed fastener, or washer making: process and apparat
Process
Making washer
470163, 72296, 72335, B21D 5320
Patent
active
057558248
ABSTRACT:
An assortment of lock washers is produced from a method including the steps of (a) providing a plurality of blanks formed of generally planar resilient metal, some of the blanks having a different configuration from other of the blanks, each of the blanks including a central aperture, an outer periphery, a tab, and two locating holes spaced from the central aperture and spaced from each other a selected distance and at a selected orientation relative to the tab; (b) providing a tool having two locator pins and structure for bending a tab out of the plane of a blank; (c) orientating the two locating pins with the two locating holes of a selected blank; (d) actuating the tool to bend the tab of the selected blank out of the plane of the selected blank; and (e) repeating steps (c)-(d) for each of the blanks.
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Blair James F. L.
Blechschmidt James L.
Larson Lowell A.
Saint Switch Inc.
Tolan Ed
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