Mass, is unsightly. It is obvious that wooden knobs, provided with is secured by contracting or expand- lO a fixed screws like porcelain knobs, would be much more con- ing either one by means of the screw. IMPROVED DOOR STOP. venient in use. The level can also be adjusted by This is accomplished in… … serted. The manufacture of the improvement, except the driving of or nut; while brass will hold a stronger thread than gray the engraving. the brads, may be done entirely by machinery, and _the in- cast iron. ; A hollow pillar of wood, or other suitable material, is at- ventor has, by this means,…
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