Time switches improvised . with alarm clocks. Lett—A weight balanced on the alarm key is dislodged as the key unwinds. Right-A cotton reel slotted on the alarm key winds down the extension tube on the light switch when the alarm operates.
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https://paperspast.natlib.govt.nz/periodicals/NZJAG19541115.2.19.2
Bibliographic details
New Zealand Journal of Agriculture, Volume 89, Issue 5, 15 November 1954, Page 466
Word Count
40Time switches improvised . with alarm clocks. Lett—A weight balanced on the alarm key is dislodged as the key unwinds. Right-A cotton reel slotted on the alarm key winds down the extension tube on the light switch when the alarm operates. New Zealand Journal of Agriculture, Volume 89, Issue 5, 15 November 1954, Page 466
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