US Patent: 470,734


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US Patent: 470,734

Oil-cup

Patentee:

Frank D. Winkley (exact or similar names) - Madison, WI

USPTO Classifications:

184/93

Tool Categories:

industrial machines : industrial machine mechanisms : industrial machine lubrication

transportation : bicycles and tricycles

household : bicycles and tricycles

Assignees:

None

Manufacturer:

Winkley Co. - Hartford, CT

Witnesses:

C. W. Murray

N. S. Johnson

Patent Dates:
Applied:	Jun. 09, 1891
Granted:	Mar. 15, 1892

Patent Pictures:

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Description:

This patent date was seen on the oil-fill cover of a bench-grinder mandrel from Builders Iron Foundry of Providence, RI. See patent 552,737 for an improvement to this patent which specifically calls out bicycles as a desirable application.