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US Patent: 475,440
Perforating, dating, and receipting stamp
Patentees:
Benjamin F. Cummins (exact or similar names) - Chicago, IL
John Stenwall, Jr. (exact or similar names) - Chicago, IL

USPTO Classifications:
234/44

Tool Categories:
trade specific : office worker

Assignees:
B. F. Cummins Co. - Chicago, IL

Manufacturer:
B. F. Cummins Co. - Chicago, IL

Witnesses:
Emma Hack
Edward S. Evarts

Patent Dates:
Applied: Nov. 09, 1891
Granted: May 24, 1892

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
YouTube video of perforator restoration
Description:
This patent number was seen on a "No. 2 Perforator" from B. F. Cummins Co. This patent provides improvements to Christian Hill's perforator patents, 409,324 and 433,003. The primary improvement is to allow multiple characters to be punched at once.

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