| 摘要 |
503,991. Door knockers ; hinges. CRADDOCK & SONS, Ltd., R., and BEECH, C. A. Feb. 4; 1938, No. 3493. [Classes 65 (i) and 65 (ii)] A knocker B is connected to the knocker plate A by a hinge comprising one or more sheet metal lugs C welded to the knocker and bent to embrace the hinge pin D, and a sheet metal member E welded to the back of the plate A, and passing through a slot therein to embrace the pin D. |
