[rp-ml] John T. Parsons was the inventor of NC machining (1946)

From: Erkut Negis <rpml_at_TurkCADCAM.net>
Date: Sat May 03 2008 - 01:14:39 EEST

Dear Kevin,
Thank you very much for this correction; These pages shows that John T.
Parsons was the inventor of NC machining;

Industry honors the inventor of NC.(numerical control; John T. Parsons)
From: Modern Machine Shop | Date: 12/1/1998 | Author: Herrin, Golden E.

John T. Parsons
>From Wikipedia, the free encyclopedia

CNC Machine Tool; Background

Note that, yet, I could not find any photos about the first NC machining


Erkut Negis


From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On Behalf
Of Kevin Adams
Sent: Friday, May 02, 2008 10:20 PM
To: Delft Spline Systems; Erkut Negis; rp-ml@rapid.lpt.fi
Subject: Re: [rp-ml] An interesting historic article about the first NC
milling machine > POPULAR SCIENCE, August 1955

Actually, the first NC application was Parsons Machine, Traverse City, MI,
late 1940's or early 1950's. Parsons developed NC as a way to machine
helicopter blades.
Parsons patented NC, but the patent application was fought by several
others. He was finally granted the patent in 1978.
Kevin Adams

Delft Spline Systems <info@spline.nl> wrote:

        Hi Erkut,
        Great story: thanks !
        As far as I knew the Unisurf system at Renault in the early
seventies was one of the earliest NC applications.
        This one clearly wins by over 15 years.
        And it shows that the technology forecasters have not made much
progress in the past 50 years when they now predict Rapid Manufacturing of
custom parts :-)
        Lex Lennings.
        At 10:13 02-05-2008, Erkut Negis wrote:
>Dear all,
>Recently I've found an interesting article about the first NC
machine made
>at MIT labs in 1955;
>In an electronic lab at MIT, engineers now are Teaching Power Tools
to Run
>By Hartley E. Howe
>Pages, 106, 107, 108, 109, 222
>The pictures given below shows first 4 pages of the article;
>The hand made drawings showing how the machine is programmed and
run using
>punched tapes (on an TX-0 computer) are very funny?.. :)
>It is interesting that in these old days the author makes very
>estimations about the future of the technology. May be he forget to
>about additive fabrication technologies however the main principle
>these two are similar?..
>I hope you will all enjoy the article.
>By the way, I want to thank to Grayson Sigler, who put these unique
scans to
>his forum pages;
>Note: I do not have the rest of the article yet. If there is a
member in
>this group who can supply this, I'll appreciate much...
>Erkut Negis
>Marketplace for Manufacturing in Turkey
>Synergy Publishing and Consulting Inc.
>Istanbul, Turkey
>Towards Perfection In Manufacturing: Autofabrication Technologies:
        Delft Spline Systems, The Netherlands.
        We offer DeskProto: affordable Rapid Prototyping using CNC milling.
        mailto:info_at_spline.nl --- website: http://www.deskproto.com
Received on Fri May 02 23:29:08 2008

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