e the pulley is shownin the engravings. If only one wheel is used, and the boxesare hung underneath the bed, the wheel can be made to pro-ject above the top of the bed, and the side of the wheel canbe used, the upper side of the bed forming a rest, upon whichthe work can be passed in grinding. Or…
Patents · Iron · Power · Improved · Scientific American · Asks · Solid emery · Rotary bed · Horse power · Upper wheel · Cast Iron · Supply pipes · Emery wheels · Post office · Trade catalogs
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