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Patent Searching and Data


Title:
PRODUCTION OF POINTER FOR CLOCK
Document Type and Number:
Japanese Patent JPS6471534
Kind Code:
A
Abstract:

PURPOSE: To thin a clock with the quality of the external appearance being uniform and stabilized by continuously executing the push back, planishing and surface finishing of the external shape of the pointer for a clock in the state of a strip.

CONSTITUTION: The push back of the external shape of the pointer 5 for clock is performed by continuously pressing the strip 1 contg. a trapezoidal hole 2. The strip 1 contg. the pointer 5 for clock that the hole 2 and external shape are pushed back is subjected to planishing by continuous pressing and the both faces of the strip 1 and those of the pointer 5 for clock are made on the same level. The surface finishing 6 of a diamond cutting, horning, etc., is executed on the surface part of the strip 1 contg. the pointer 5 for clock that the trapezoidal hole and external shape are pushed back. The coated finishing layer of plating, painting, etc., is then formed on the surface of the pointer 5 for clock at the final time when the pointer 5 is removed from the strip 1 by bending the strip 1 contg. the pointer 5 that the hole 2 and external shape are pushed back.


Inventors:
MATSUMURA YOSHIO
FUJIMORI MASAHIKO
Application Number:
JP22572887A
Publication Date:
March 16, 1989
Filing Date:
September 09, 1987
Export Citation:
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Assignee:
SEIKO EPSON CORP
MIKUNI KOGYO KK
International Classes:
B21D28/00; B21D28/24; G04B19/04; (IPC1-7): B21D28/00; B21D28/24; G04B19/04
Attorney, Agent or Firm:
Mogami (1 person outside)