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US Patent: 33,912
Improved Device for Weaning Calves
Patentee:
John J. Welling (exact or similar names) - Cedar Falls, IA

USPTO Classifications:

Tool Categories:
agricultural : animal weaners

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James Miller
M. W. Chapman
Patent Dates:
Granted: Dec. 10, 1861

Patent Pictures:
Patent 33,912- edited drawing
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Description:
Main pieces connected with a central pivot; the spring keeps the two parts clamped in the animal's nostrils. Surviving drawing is incomplete.

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