US Patent: 39,562 - Improvement in shaft-bearings


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US Patent: 39,562

Improvement in shaft-bearings

Patentee:

James B. Francis (exact or similar names) - Lowell, MA

USPTO Classifications:

384/129

Tool Categories:

propulsion and energy : water power : water wheels : turbine water wheels

industrial machines : industrial machine mechanisms : industrial machine bearings

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

P. E. Teschemacher

N. W. Stearns

Patent Dates:
Granted:	Aug. 18, 1863

Patent Pictures:

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Wikipedia biography of James B. Francis

Description:

This invention is a liquid-mercury bearing for the vertical water-wheel shaft. The inventor is best remembered as the inventor of the very important Francis turbine water-wheel, which to this day is the dominant type of water-wheel. Francis did not patent his water wheel, which was developed using experiments and rigorous mathematical analysis.