[inforoots] Re: inforoots Digest, Vol 25, Issue 14

[Peter Capek]

It's certainly a disk actuator.   The 2 white disks (which look to be about
an inch in diameter, but with a slice taken off each side) visible in the
..1939.. photo look
like the read/write heads, so apparently two per disk, moving on one access
arm.

Just judging from the scale of this and estimating the size, I would guess
this assembly is
from a large disk - perhaps 24 inches, maybe more, in diameter (and hence,
likely, no newer than about 1970).

The arms appear to be numbered up to 10 in the 1940 photo, so there were
probably 20 surfaces used in the drive.

                Peter Capek


On 2/28/06, Curtis A. Jones <curtis_jones at prodigy.net> wrote:
>
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> It looks like an actuator for a disk drive with about
> 11 disks.  At least I counted about 11 head-arm
> assemblies.  But I don't recognize it, and am not even
> certain it's an actuator.
>
> The large shiny pieces on the top and maybe bottom
> might serve as shields and as clamps to hold what
> might be a large sort of cylindrical ferrite magnet
> assembly (shiny black) that I imagine I can see
> peeking out the side of picture in which "REV F" is
> visible.  On the other picture I imagine I see small
> bearings/wheels on a track below and to the left of
> the plate to which the head-arm assemblies must be
> fastened.
> Curtis
>
>
> > Message: 1
> > Date: Tue, 28 Feb 2006 17:17:10 +0100
> > From: "Hans Neukom" <hans.neukom at hispeed.ch>
> > Subject: [inforoots] Unknown IT Device from a
> > collection in
> >       Switzerland
> ...
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