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Description: |
| "My invention relates to those boring-machines used for boring for mortises and similar purposes, and consists in pivoting the mechanism that drives the auger to a plate or frame sliding on the base of the machine, and operated by a rack and pinion to adjust it for boring the different holes successively, and also in arranging a central elevating-gear permanently in mesh, with a stationary rack attached to the standard, with such form and construction of parts as to make a convenient and effective boring-machine." |
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