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US Patent: 1,133,353
Lubricator cup
Patentee:
Charles F. Wray (exact or similar names) - Rochester, NY

USPTO Classifications:
184/93

Tool Categories:

Assignees:
National Brass Mfg Co. - Rochester, NY

Manufacturer:
National Brass Mfg Co. - Rochester, NY

Witnesses:
Unknown
Patent Dates:
Applied: Feb. 02, 1914
Granted: Mar. 30, 1915

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
A datamp user reports seeing these cups usually called drip oilers. It's to provide a fill opening and swivel cover for same.

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