[modeleng] Re: Technical education
- From: "John Buckley" <jbuckley@xxxxxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Sun, 6 Aug 2006 11:29:20 +1000
Its all in the size of the spanner.
----- Original Message -----
From: "Jesse Livingston" <fernj1@xxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Sunday, August 06, 2006 10:41 AM
Subject: [modeleng] Re: Technical education
> "" John,
> I knew I had it somewhere, but will come onto that.
>
> If the thicker nut is screwed down onto the thin nut "to within a few
> degrees of its limit", I doubt that the lower nut COULD be undone.
However,
> that depends on how one defines "tightened in normal way" and all the
other
> terms used.""
>
> Gents,
>
> I was looking at a book I have on machinery in the 1890s, I found a cut
that
> showed a square nut tightened against a lockwasher. Interestingly, the nut
> was what we would consider "upside down" in that the crown side was
against
> the lockwasher! Why, I don't know so don't ask me, but there were two
> different pictures and both showed the same arrangement. The "write up",
> paid ad actually, was for a company that made bolts and other fasteners
so
> I don't think it was in error. Anyway, I will continue to put my nuts on
> lockwashers with the crown side upward.
>
> Jesse in Tennessee
>
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