Old clocks and watches & their makers : being an historical and descriptive account of the different styles of clocks and watches of the past, in England and abroad, to which is added a list of nearly twelve thousand makers (1922)
Britten, F. J. (Frederick James), 1843-1913, Britten, Annie · London : E. & F. N. Spon · leaf 354
ment, the pendulummoved 5^ the motion of the pendulum of No. 1 gradually decreasing asthe other increased, and in 45 minutes it stopped. He then left thependulum of No. 1 at rest, and set No. 2 going, making it also describean arc of 5° ; it continued to vibrate less and less till it described… … Fig. 480.—John Ellicott, 1706-1772. 33^ Old Clocks and Watches and their Makers going communicated aslight motion to the caseand in a lesser degreeto whatever the casetouched. Ellicotts ex-periment was useful asshowing the necessityof fixing clocks withheavy pendulums to thewall of a building…
Clocks and watches · Clock and watch makers
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