Bush code duplicator partial silhouette method

Details Bush code duplicator partial silhouette method Bush code duplicator partial silhouette method

1990-10-25

1992-07-28

Briggs, William

Metal working

Method of mechanical manufacture

Shaping one-piece blank by removing material

76110, 409 82, B23P 1300, B23C 116

Patent

active

051331276

ABSTRACT:
This invention relates to the method for producing a coded reference key for use in the locksmithing trade. The method comprises cutting a key blank at a first coded depth and at a first shank position, to create a partial silhouette of a reference key. Upon cutting a number of such partial reference key silhouettes at a number of positions and common depths, a set of partial reference key silhouettes can be created. When a locksmith is required to reproduce a reference key which has certain depth cuts at certain positions, he merely assembles the appropriate pre-cut partial reference keys, thereby creating the required complete silhouette. This complete reference key silhouette may then be duplicated by using a standard reference key duplicating machine.

REFERENCES:
patent: 2098728 (1937-11-01), McPhee
patent: 3496636 (1970-02-01), Lieptz
patent: 3791240 (1974-02-01), Meoni
patent: 4117763 (1978-10-01), Uyeda
patent: 4188163 (1980-02-01), Juskevic
patent: 4521142 (1985-06-01), Juskevic
patent: 4545709 (1985-10-01), Feruzzi
Mini-Mite 008 Key Machine Instruction Manual and Part List
National Depth & Space Chart

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