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Scientific American, Vol. 54, No. 3 (January 1886) (1886)

leaf 7

An illustration from Scientific American, Vol. 54, No. 3 (January 1886), 1886, leaf 7
ment of hour, and 1 year is 34 hours in the same measure. shafts, a and 6, and the differential motion; similar the parts. The hour hand on the large dial therefore represents letters refer to the same parts' in the different engrav- Firmly secured on a solid base of metal are two regu- the sun's… … sarily follow/, and in proportion to the speed of the Fig. 2.-ENLABGED VIEW OF THE DIALS. Fig. 4.-SIDE VIEW OF THE DIFFEBENTIAL MOTION. © 1886 SCIENTIFIC AMERICAN, INC

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