bolts countersunk intoand passing through the knives and the hub, the outer sur-faces of the knives being flush with the surface of the hub,so th.at the knives and hub can work close to the colter.The outer ends of the knives are tapered to an edge, so thatthey will take firm hold upon the ground,… … AValklng Stool for Children. The engraving shows a new walking stool for the use ofchildren when learning to walk. Such stools have beenmade with a ring-shaped top supported upen legs, and theyhave been used by placing the childs feet foremost throughthe top of the stool. This invention avoids this…
Patented · Patents · Apparatus · Boiler · Water · Scientific American · Zinc · Watch case · Manufacturing company · Morning star · Hot air · Vera cruz · Young men · Mexico city · Patented improvements · Inner surface
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