"Tom" wrote in message
...
Harold and Susan Vordos wrote:

"Tom" wrote in message
...
Harold and Susan Vordos wrote:

"DeepDiver" wrote in message
...
"Harold and Susan Vordos" wrote in message
...

That drives the cutting tool of choice, and it's extracted from
the taper socket via the rectangular access hole through the
side of the adapter. Sort of a quick change.

Is it possible the square cross-hole is to engage the driving tang
on
the
ends of tang-shaft drill bits? That's what it looks like to my
novice
eyes.

- Michael


You're obviously correct, and I should have so noted. I have a few
of
the
drills that are used in such adapters, though I've never used them.

Harold

Had a browse through some old catalogues and this appears
to be a collet for using taps in a MT drill spindle, such
tapping collets were marketed under the brand, "Ever-Wear"

Tom

Possibly, depending on the diameter of the hole. I can't help but
think
the concept has been used broadly, but not in recent history.

I've commented on tap shank sizes in my other post. That would help
determine the intended use of the adapter.

Thanks for the info, Tom. We can always count on you for the facts.

Harold

Ye of little faith, Harold! :-)
I checked a later cat, 1937, as against 1923 and Scully-Jones
were making them up to 6MT with an internal square of 1.575"
to accommodate 2-1/2" taps. They listed 53 different sizes and
were prepared to supply specials for specific shanks & squares.

Tom

Chuckle!
And here I thought they weren't *modern!*

Harold