Title:
MANUFACTURE OF DIAL OF ALARM CLOCK
Document Type and Number:
Japanese Patent JPS5631673
Kind Code:
A
Abstract:
PURPOSE: To make highly accurate the alarm clock, by performing the center punch, external size punch of dial, and dial alarm time punch with one press mold at the same time.
CONSTITUTION: The dial base plate 1A on which the guide hole 5 is provided in advance and the time scale 2 is printed by taking the guide hole 5 as the reference, is placed on the table of press machine, and the guide hole 5 is inserted to the pin 6 and fixed. Next, with one press mold, the external size punch of the dial 1, center hole 3 punch of the scale 1, and punch for the alarm time scale 4 are made at the same time. Thus, the center hole 3 of the dial 1 and the alarm scale 4 have no position shift, allowing high accuracy of alarm time.
Inventors:
SATOU MITSUYA
Application Number:
JP10778979A
Publication Date:
March 31, 1981
Filing Date:
August 23, 1979
Export Citation:
Assignee:
SEIKOSHA KK
International Classes:
G04B19/06; (IPC1-7): G04B19/06
Domestic Patent References:
| JPS50102363A | 1975-08-13 | |||
| JPS4934358A | 1974-03-29 |