9 Apr
2019
9 Apr
'19
6:30 a.m.
On Apr 8, 2019, at 9:40 PM, Jon Elson via cctalk
<cctalk at classiccmp.org> wrote:
On 04/08/2019 06:10 PM, Tom Gardner via cctalk wrote:
I don't think other companies followed that strange design approach even back then,
though. Never mind the pinch roller part; I could never understand why IBM would build
vacuum columns with the oxide facing out, sliding against the vacuum column side walls.
FWIW the tape drive is an IBM 2315 announced
April 16, 1965
<https://www.ibm.com/ibm/history/exhibits/dpd50/dpd50_chronology3.html> for use on
low end S/360s. Here is a brochure
<http://ed-thelen.org/comp-hist/IBM-ProdAnn/2415.pdf> as well as manuals at
http://www.bitsavers.org/pdf/ibm/2415/
So, is that a capstan and pinch roller drive? I'd kind of guess so, if
announced in 1965. (for future readers, 2315 is apparently a typo, 2415
would fit in with 24xx models being tape drives, 23xx was for disks.)
Yes, 2315 is the RK05 lookalike found in the 360 model 44.
paul