Patent Model - Stop-Watch
Maker and role
Henri Lugrin (b.1848, d.1908), Patentee
Henri Lugrin (b.1848, d.1908), Assignee
Prosper Nordmann, Assignee
Production date
Jul 06 1880
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Object detail
Media/Materials
Bronze
Measurements
1 3/4 x 1/2" (4.4 x 1.3cm)
Description
Lugrin's patent "relates to a simple and effective construction of stop-watches used for timing purposes; and it consists of a transmitting gear-wheel, that is placed loosely on the arbor of the third wheel of the watch-movement, and either locked thereto or released therefrom by a clutch device consisting of a conical sleeve and a spring-arm pressing thereon, the spring-arm being applied by a suitable lever, so as to cause the transmitting gear-wheel, either to revolve and impart motion to the timing-hand or to remain loosely on the shaft." (Patent Number 229,723)
Collection
Object number
2015.14.3232
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