Ed Huntress wrote:

""PrecisionMachinisT"" wrote in message
...

Ed,

What bothers me is that prior to the wide spread application of nc / cnc,
profiling machines such as the Keller, and Morey and later the hydraulic
tracing units by Rosebrook, Tru trace, and H&H Wilson (Cincinnati even had
a
Bridgeport sized one caled the "contourmaster") were quite common where
high
precision contour milling for things like airframe components and molds,
ect
were needed...........in fact all the very same industries where cnc is so
prevalent today.

These machine tools were in widespread use until as late as the mid
eighties, yet scant reference to them is to be found today--especially on
the internet.

Yeah, they disappeared surprisingly fast. I've remarked before on the same
thing you've observed. I don't even know where they went.

Ed Huntress


I got an American Pacemaker in the shop with a tracer attachment and css
from the late 50's Its a shame to get rid of it but the cncs will do the
same thing better and faster.

John