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How Things Work: Mechanical Alarm Clocks. Ed (Jessica) Edwards Dec. 12, 2003. General Evolution Under the Hood The Main Attraction A Closer Look Powering Up. Gearing Up Sound the Alarm Not so Complicated Acknowledgments. Mechanical Alarm Clocks.

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how things work mechanical alarm clocks

How Things Work:Mechanical Alarm Clocks

Ed (Jessica) Edwards

Dec. 12, 2003

mechanical alarm clocks
General Evolution

Under the Hood

The Main Attraction

A Closer Look

Powering Up

Gearing Up

Sound the Alarm

Not so Complicated

Acknowledgments

Mechanical Alarm Clocks
general evolution of mechanical clocks
General Evolution(of mechanical clocks)
  • Sundials/ shadow clocks (2100 BC)
  • Water Clocks (1500 BC)
  • Pendulum Clocks (1300s AD)
  • Spring-driven Clocks (1400s)
  • More Accurate Pendulum and Spring Clocks Developed...
under the hood
Under the Hood
  • Remove winding knobs and back cover...
the main attraction
The Main Attraction
  • After removing stand, alarm bells, and mounting ring...

Main spring and

Gear train

Alarm spring

Alarm escapement

Alarm gear train

Oscillating wheel

and spring

a closer look
A Closer Look

(Goofy looking

guy from clipart)

Still in the box..

(Curious George)

gearing up
Gearing Up

Gear train

acknowledgments
Acknowledgments
  • I’d like to thank Jennifer Bachman for donating the alarm clock used, and Dr. Szapiro for helping me with my project.
  • Bibliography
    • Bloomfield, Louis A., How Things Work, p.232-238
    • Brain, Marshall, Inside a Wind-up Alarm Clock
          • Http://www.home.howstuffworks.com/inside-clock.hm
    • Woodenstone Clocks, A History of Clocks
          • Http://www.woodenstone.com/history.htm