Improvements in Means for Fastening and Securing Smoke Box and other Doors.

摘要

27,862. Kittridge, J. A., and Davis, T. Nov. 30. Operating swinging doors.-The internal cam surface 8 of a lever 5 which fastens the door of a smoke-box, furnace, &c. serves also, when the door is to be opened, to lever up the pin 4 fixed on the door to start the opening movement.