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Description: |
| A rack on the main bar, a tooth at the base of the adjustable jaw, and two mountings with compression springs are the major features of this quick-adjusting pipe wrench. Known examples marked only with the patent date, and have leaf springs instead of the compression coil springs shown in the patent drawings.
Corresponding Canadian patent CA-27,657 and subsequent foreign patents ( Canadian patent CA-30,994 and British patent GB-188901609 ) provide suggestions for intermediate or alternate manufacturers. |
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