Re: It's because...
Jonathan Peck - N.Y.
>Hi Scott,
I'm a little foggy on types earlier than type 9, but... I happened to pick up a type 4 jointer that is in good condition, but not good enough to be collectors meat..beep..beep. When I took it appart, I couldn't help but marvel at how huge the bearing surface was for the frog. From the hyperkiiten type study:
" The frog receiver is now a broad, rectangular area, with an arched rear (the portion nearest the tote). It is machined flat. "
and the Bailey type 4 predates the first Bedrock by 24 years. Not sure what any of this means, but another nice feature that appears with the type 9 (1902) is (also from hyperkitten)
" Frog receiver undergoes a major redesign. A smaller bearing surface is now cast into the bed, toward the tote. Two circular bosses, to receive the screws are located just ahead of this bearing surface, toward the mouth. A rib runs from the mouth to bearing surface, over which the frog rests. This is to align the frog laterally, to keep it square to the sides of the plane, and, thus, make the iron parallel to the mouth. The frog has a slot at its bottom (the portion nearest the mouth) to fit over the rib cast in the bed. "
This change is introduced four years after the introduction of the Bedrock line. I'm no expert, but I think the Bailey bed design was changed in 1902 to be less like the Bedrock design after the Bedrock line was introduced in 1898.
Regards
Jonathan