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Cast Iron Canning Jar Ring-Wrench: US Made? When?
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<p>[QUOTE="wlwhittier, post: 4475493, member: 76316"]There aren't very many tools that make use of flexibility in cast-iron, at least in my experience.</p><p>Internal-combustion engines used cast piston rings, long ago. I cannot think of another example. </p><p>No matter...this wrench does; and to prevent over travel which would break the casting, it has integral stops in the ends of each grip arm.</p><p><br /></p><p>I would like to know roughly when it was made, and where. There's not a mark on it to answer those questions, let alone who designed it and formulated the specific iron alloy (and perhaps heat-treatment) to achieve such a simple and durable tool.</p><p><br /></p><p>Like so many old things, it's somewhat of an orphan.</p><p><br /></p><p>Thanks for looking!</p><p><br /></p><p>[ATTACH=full]387915[/ATTACH] [ATTACH=full]387916[/ATTACH] [ATTACH=full]387917[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="wlwhittier, post: 4475493, member: 76316"]There aren't very many tools that make use of flexibility in cast-iron, at least in my experience. Internal-combustion engines used cast piston rings, long ago. I cannot think of another example. No matter...this wrench does; and to prevent over travel which would break the casting, it has integral stops in the ends of each grip arm. I would like to know roughly when it was made, and where. There's not a mark on it to answer those questions, let alone who designed it and formulated the specific iron alloy (and perhaps heat-treatment) to achieve such a simple and durable tool. Like so many old things, it's somewhat of an orphan. Thanks for looking! [ATTACH=full]387915[/ATTACH] [ATTACH=full]387916[/ATTACH] [ATTACH=full]387917[/ATTACH][/QUOTE]
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