Mix a small amount of flour, salt and vinegar in a bowl, and apply this mixture to your brass doorknobs using a soft, damp clothe to remove tough tarnish or other deposits. Treat brass hardware with paste wax or lemon oil once a month to prevent tarnishing and maintain the material's natural shine. How to Remove a Corbin Russwin Doorknob Open the door. Place a Phillips screwdriver into the head of the top screw. Remove the screw from its hole. Place the screwdriver into the grooves on the bottom screw. Pull the inside part of the doorknob straight out while holding the outside portion of the doorknob in place. Door Knob Turns But Won't Open Take knob/handle off the door. Remove the thru spindle. Place flat-head screwdriver in the gap you removed the spindle from. Twist the screwdriver to see if the mechanism engages properly. How to Remove a Locked Doorknob Step 1: Examine the Shank. Examine the shank of the doorknob. Step 2: Insert an Object. Insert a tool into the hole or slot. Step 3: Push and Pull. Push on the tool. Step 4: Twist If It Resists. Twist the tool if the doorknob resists your efforts. Step 5: Remove the Rose. Step 6: Unscrew and Finish. I'm going to assume that this is a small round hole in the center of the knob. This is designed as an emergency way to open interior doors with locks such as a bathroom or bedroom door. It's called a privacy lock.
Remove the spindle, cylinder and trim pieces. Unscrew top- and bottom-most screws on lock faceplate and remove lock from door. Place new mortise lock case in existing hole in latch-edge of door and screw into place. Install spindle into handle and tighten set screw.
How to Install Antique and Vintage Doorknobs The connecting rods on the glass top doorknobs are usually the threaded type with screws the base of each knob. Remove the knob from one end of the rod. Using manufacturer instructions, install the mortise latch in your door.