More info from Jeff, after receiving my pics. He wanted pics to verify (Registration) this machine. He replied,

" ref: S/N 74498-B

It is definitely a patternmakers jointer, and it even has a spring joint attachment."

(Arms tossed in air) I don't know what the spring joint attachment is, but I got it. LOL.

A: 12-111 table Lock Knob DK -6 $12.00
B: Unable to identify Knob with broken casting.
*this (above) piece/part is probably for some other non-Northfield machine at the auction.
C: Replace the JA-28 fork casting $116.00
D: Try welding the aluminum shield (cutter head guard).

Sonny

On 4/17/2019 3:58 PM, Sonny wrote:
More info from Jeff, after receiving my pics. He wanted pics to verify (Registration) this machine. He replied,

" ref: S/N 74498-B

It is definitely a patternmakers jointer, and it even has a spring joint attachment."

(Arms tossed in air) I don't know what the spring joint attachment is, but I got it. LOL.

It's an adjustable cam arrangement that drops the outfeed bed slightly
so that the edge is slightly convex. The idea was to be able to apply
more compression to ends of the glue joint that was supposed to let it
(the joint) withstand faster moisture loss from the ends than the
middle...unless one were working with material at pretty high moisture
levels or very wide pieces, my personal opinion is it's more of a dream
than reality in actual practice that it would make any demonstrable
difference.

I recall once ages ago when I first heard of it trying to find any
research supporting it on the US Forest Products Lab site and failing...

Let's see...gargle, gargle...oh! Northfield actually has a very nice
datasheet--I shoulda' just looked first and posted a link instead of
typing...


A: 12-111 table Lock Knob DK -6 $12.00
B: Unable to identify Knob with broken casting.
*this (above) piece/part is probably for some other non-Northfield machine at the auction.
C: Replace the JA-28 fork casting $116.00
D: Try welding the aluminum shield (cutter head guard).

"It's only money..."

I am still envious, though...you scored well here, indeed.

--

On 4/17/2019 6:25 PM, dpb wrote:
....

Let's see...gargle, gargle...oh! Northfield actually has a very nice
datasheet--I shoulda' just looked first and posted a link instead of
typing...

....

Well, would help if I would attach the link...

http://www.northfieldwoodworking.com...ttachments.pdf

--