
Deleted User:
I got nothing.

Aqua:
We always called these alligator wrenches. The notches I bielive are called thread chasers .... I don't think they make these anymore. Cool find.

Speedy:
Alligator Wrench is correct, never heard of it before. The notches grab on to pipes, they are not thread chasers. https://www.etsy.com/listing/204043535/antique-whitman-barnes-bulldog-no-2-12?ref=sr_gallery_3&ga_search_query=alligator+wrench&ga_search_type=all&ga_view_type=gallery

Speedy:
http://amhistory.si.edu/onthemove/collection/object_133.html
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