[ARC5] Pantograph machine?

[AKLDGUY .]

> No. I think it's an engraving head. It is not a spinning router bit, like
> a Green uses.
>
> The workpiece is below the stylus and you can see radial dial lines if you
> look very closely.
>
> However, AFAIK, no ARC-5 sets used dials hogged out of a solid chunk of
> aluminum. They are either bakelite or stamped aluminum.

Is it possible she places a totally black ARC-5 dial onto the shiny round
thingy,
then the machine paints the dial divisions, together with their Kc/s
numerals,
eg. 3.5, 3.6, etc, as well as the central frequency range?

> It is possible she is making master molds for plastic dials, IMO.

In 1942? I know plastics were around back then because the 1938 Ford V8
I owned in the 1970's had original plastic window winder knobs, but one
doesn't
tend to find plastics used in 1940's military stuff.

73 de Neil ZL1ANM


On Wed, May 21, 2014 at 10:30 AM, J. Forster <jfor at quikus.com> wrote:

> No. I think it's an engraving head. It is not a spinning router bit, like
> a Green uses.
>
> The workpiece is below the stylus and you can see radial dial lines if you
> look very closely.
>
> However, AFAIK, no ARC-5 sets used dials hogged out of a solid chunk of
> aluminum. They are either bakelite or stamped aluminum.
>
> It is possible she is making master molds for plastic dials, IMO.
>
> FWIW,
>
> -John
>
> =================
>
>
>
> > I specifically said "her left elbow". The shiny metal bar running off to
> > right of picture looks like it's an aluminium strut, part of an ARC-5
> > mount? Yes, the stylus appears to be tracing out the master.
> >
> > Then again, the shiny highly polished round thingies look like they're
> > just
> > the right size and shape for ARC-5 dials to be positioned on them, so
> does
> > this machine imprint the digits and markings onto the painted dials?
> >
> > 73 de Neil ZL1ANM
> >
> >
> > On Wed, May 21, 2014 at 9:56 AM, J. Forster <jfor at quikus.com> wrote:
> >
> >> Do you mean her left or our left?
> >>
> >> The bar on the left of the pic is the master. She is tracing it with the
> >> stylus.
> >>
> >> -John
> >>
> >> ================
> >>
> >>
> >> > Some of you have lathes and whatnot, so what is the item this young
> >> lady
> >> > is
> >> > machining or making?
> >> >
> >> > http://www.shorpy.com/node/17487#comments
> >> >
> >> > The shiny metal bar near her left elbow sure looks like the strut of
> >> an
> >> > ARC-5 series mount.
> >> >
> >> > The photo can be enlarged; click on appropriate link.
> >> >
> >> > 73 de Neil ZL1ANM
> >> > ______________________________________________________________
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