| Subject: | [Shop-talk] drilling a square hole |
|---|---|
| From: | mayfield+shoptalk at sackheads.org (Jimmie Mayfield) |
| Date: | Tue, 18 Oct 2011 16:09:40 -0400 |
| References: | <8EE44FEC86124E82BD97B04DC61FC042@OwnerPC> <alpine.BSF.2.00.1110181206001.60277@itonami.pair.com> |
On Tue, Oct 18, 2011 at 12:08:08PM -0400, David Hillman wrote: > On Tue, 18 Oct 2011, john niolon wrote: > It's actually based on a 1918 patent... an American one. HJ Watts > patent #1,241,176. When I was a kid, I saw a replica in action at a Ripley's 'Believe It Or Not' museum. |
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