HOROLOGY- The Index


Horology is the Science of Time, Timekeepers ( Clocks, Watches ) and Timekeeping

Projection Clock/Night Clock


Design Patented (UK) 1909

30h lever Escapement, Time is told by front dial (solid) or clocktube is tilted 90 degrees and an image of the dial is projected on the ceiling: For this there are two battery operated bulbs inside the clock, and theser is a second , tanslucent dial (incl hands) behind the movement to act as a "slide".

30 h anchor escapement.

This Clock described in Shenton, Collectable Clocks, Illustration 306

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Overall view

escapement
Closeup of Escapement

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2 bulbs (on flashlight battery in base) are inserted through openings in the side of the pipe (case)

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Movement from top right, front dial on top, winding arbor (contrate wheel) bottom left, escapement top left

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Overall movement view, from front right high, back dial is translucent, bulbs go between middle and back plate

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Back view from the left, notice dial when looking from outside is mirror immage, setting square is on back center arbor

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Movement top front left, notice soace between middle and back plate where the buld goes in


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Copyright Fortunat F. Mueller-Maerki, Horology - The Index . (You can reach me at maerki@horology.com)

Comments and additions always welcome. Updated May 8, 1999 , (h-niteclk.html) . Hosted by WebCom