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US Patent: 402,400
Tool For Manipulating Saw Teeth
Patentee:
Frederick W. Cook - San Francisco, CA

USPTO Classifications:
76/80

Tool Categories:
wrenches

Assignees:
Frederick W. Cook - San Francisco, CA
H. P. Gregory and Company - San Francisco, CA

Manufacturer:
Not known to have been produced

Witnesses:
Geo. H. Strong
S. H. Nourse
H. C. Lee

Patent Dates:
Applied: Dec. 15, 1888
Granted: Apr. 30, 1889

Patent Pictures:
Frederick W. Cook patent April 30, 1889
USPTO pdf tiff
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Description:
Specialized pin spanner for insertible saw teeth that are held in place by spring action of the sides of the socket. The pivot between the pins allows them to spread apart. The tool is called a wrench in the specifications.

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