Grooved plane for congreve-style clock

Details Grooved plane for congreve-style clock Grooved plane for congreve-style clock

1998-10-06

2000-08-01

Miska, Vit

Horology: time measuring systems or devices

Chronological

368 76, G04B 1900, G04C 2100

Patent

active

06097673&

ABSTRACT:
A design is for a Congreve-style clock that keeps time more accurately, i.e. that is insensitive to minor variations in friction on the ball, in which the depth of each groove in the inclined plane varies along its length so that the path of the ball approximates a cycloid on each traversal. The grooves provide alternating paths that overlap such that the distance that the ball travels varies with the speed of the ball. In such system, increased friction causes the ball to move more slowly, but because the slower ball also follows a shorter path, the time required to reach the bottom of the inclined plane remains the same. Similarly, decreased friction causes the ball to travel more quickly, but a faster moving balls takes a longer path.

REFERENCES:
patent: 3538851 (1970-11-01), Korr
patent: 4077198 (1978-03-01), Mayenschein
patent: 4370064 (1983-01-01), Hicks et al.

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