B63-105. PULL CHAIN DRILL. Uncommon variation on the bow drill in which the drilling motion is produced by pulling on a spring-powered armature that automatically returns. There are a few versions around but all are uncommon; this one is 10" long with a maple handle and knob, it is marked by Goodell-Pratt on the chuck with an 8/13/95 patent date but this appears to refer to the chuck only, which is based on Lanfair's patent; we're not aware of any evidence that G-P actually produced this type of drill. The mechanism resembles Hjorth's patent (see Lots 104 and 107). Whoever made it, it's super clean and works very smoothly. Fine 200-400