Pragotron Master Clock
Circa 1960
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In 1960 master clocks started to become high tech. This clock is only 15 inches high and could control
as many slave clocks as you wanted it to and it could also control a bell circuit. The clock was made by
the Pragotron Company in Czechoslovakia. Below the clock dial was the control circuit wheel. Pins could be
placed in the wheel at 5 minute intervals for a 24 hour period and there was a separate indicator for the days of the week.
When the inserted pin would reach the control circuit, a bell would ring. The clock could also control any number
of remote, or slave clocks
The entire clock mechanism and control wheel could be removed from the clock for service or adjustment in just seconds.
Now controled by diodes, transistors, resistors, and capacitors, the clock was very accurate and ran on 120 volts. With the clock dial, mechanism, and control wheel removed, the
circuit board could continue to operate the remote slave clocks. The circuit board is complete with blinking red and green led lights to indicate the seconds and syncing pulses.
Since this clock was made, the company changed thier name
from Pragotron to Elektrocas,
and the country has change their name
from Czechoslovakia to the Czech Republic.
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