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PEXTO Braces -  Another Type Study of Sorts
by George Langford

Overall

Brace PEXTO-04 - P.S.&W.Co. No.1201.
Price: $15.00 plus shipping.

This twelve-inch-swing brace is in the middle range, as it probably originally had the Whitney-Ellrich patent jaw spring (now replaced with a bit of wire from a nail).  It was made after the Ellrich ratchet patent had expired in 1901 as well as after the Whitney-Ellrich patent was sent to the US Patent Office in May of 1910.  The ball bearings and the affixing screw are all original, but one of the jaws cracked when I tried to straighten it.  Only about 15% of the nickel plating remains, but the steel surface has a pleasant, smooth patina with no pitting.  The H.V. Smith patent for the ball-bearing chuck would have expired in 1912.

The (cracked) wrist handle's clearance with respect to the ferrules is adjustable by means of the screws seen below.  I know of no applicable patent, even though I have seen other manufacturers' braces with similar adjustments.  There is an inclined ramp behind each screw, aligned so that the ferrule will move towards the handle if the screw loosens. 

The July 9, 1895 patent date can be seen here.   See also: "P.S.&W.Co. 1201."
Wrist handle with screw-adjustable ferrules

Chuck view
Pad view
Chuck off