doorknob shaft
A shaft that connects two doorknobs through the door. The standard shape before the 1950’s was a square about 5/16″ square. Modern doorknobs often have a crescent shaped connection.
Antique doorknob shafts come in a few different types. The main types are
- non-threaded
- threaded (mainly for glass doorknobs up until the 1930’s when threading started to be used on metal and bakelite doorknobs as well)
- 3 part- used for a short time by Yale between about 1900-1910.
There are variants of most of the types. The shafts can also vary in length and size. Sometimes exterior or commercial doors would have a larger knob that would take a larger shaft.
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