On Wed, 22 Jun 2005 20:38:21 +0100, Andy Dingley
wrote:

On Wed, 22 Jun 2005 16:41:24 +0100, John Rumm
wrote:

The through hole had a
square cut slot (approx 5mm deep and wide) machined into its
circumference for a woodruff key.

Usually cut with a slotting machine, rather than a broach. This is like
a shaper, but skinny and with a long reach - they were the original form
of shaper and one of the first specialised machines tools. (A shaper is
a single point tool like a lathe tool, oscillating back and forth whilst
the work moves sideways beneath it.)

As opposed to a planer, where the work moves back and forth and the
tool (with it's clapper box) stays still; the whole shebang being
hand-driven.

....Memories of room W5 at school some 40-mumble years ago.

That was a wonderful metalwork room. A couple of Harrison screwcutting
lathes, two or three shaft-driven ones, forges and anvils, brazing
hearths, pedestal drills, shaper, planer, power hacksaw, grinders,
polishers. surface plates, metal beating/riveting benches, guillotine,
moulding benches, and of course "Archie" Campbell the teacher, deaf as
a post, who wore proper metalworkers glasses with springy hooks to go
around the ears. He had a slogan written in gold leaf above the
blackboard "Be accurate", which somebody modified to "Be a curate".

I'm allowed to reminisce - it's my birthday today ....

--
Frank Erskine
Sunderland