Peavys and Cant Hooks have been around for a long long time and are used professionally at log mills. Not sure how long the log jacks have been in use but I imagine quite a while.
Actually the Peavy was designed and forged in 1858 by Joseph Peavy, a blacksmith from Stillwater Maine. He made a rigid clasp to encircle the cant dog handle with the hook on one side. It moved up and down, but not sideways. All loggers have used it ever since.
Check out these puppies at the attached link.
Very unique brand of professional logging tools with aluminum handles.
http://store.logrite.com/
Actually the Peavy was designed and forged in 1858 by Joseph Peavy, a blacksmith from Stillwater Maine. He made a rigid clasp to encircle the cant dog handle with the hook on one side. It moved up and down, but not sideways. All loggers have used it ever since.
Check out these puppies at the attached link.
Very unique brand of professional logging tools with aluminum handles.
http://store.logrite.com/