It provides minimal security designed simply to keep the door shut. The slant on the latch bolt rides up the lip of the strike (located on the door jamb) until the bolt falls into a hole in the strike. The bolt with the slanted end is called a latch bolt, and it’s activated by turning the knobs an internal spring retracts it when the door closes. On most door locks, there are two bolts that come through the face. But once you understand a bit about the anatomy of door hardware, you can perform many fixes yourself. Is there an easy fix?īill Rigby: No one gives much thought to doorknobs or their accompanying mechanisms until they stop working. My old house has lots of stuck doorknob mechanisms on both interior and exterior doors. To repair old doorknobs and locks, start by learning a few key parts.
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