knobs of metalの例文

• :: : According to my old Webster's, one version of a bead is a small knob of metal on a rifle, near the muzzle, used for a sight . ?! carrots?! 01 : 16, 25 December 2009 ( UTC)
• It was established " that knobs of metal, wood, & c ., connected with a shank and spindle, in the mode and by the means used by the patentees in their manufacture, had been before known, and were in public use . " Clay doorknobs were old too.