Primitive screw dating

The tangs of the pads are usually square, though not necessarily tapered.The brace in figure 2 is fitted with a wooden thumbscrew.

primitive screw dating-77primitive screw dating-87

This brace, by the way, came from an auction of the contents of the long-defunct chair factory in Taylorstown back in the 1980's. The brace is in almost new condition, whereas the pads are well-used.This tang fits into the square chuck of the brace (figure 5).The tang arms compress together to allow insertion, then spring into position to secure the pad.This suggests that Wilson made several braces to accept the same bit pads, replacing the braces as their efficiency was destroyed by wear or damage.Another method of retaining| the bit pad in the chuck is the use I of a simple thumbscrew, either wood or metal.