At 03:57 PM 4/15/2012, genepadgett@comcast.net wrote:
>Not sure if I am on topic here or not, but there is a counter set
>screw/screws in the seat frame that I am told are "Wentworth" (sp?). I
>have been told that the seat frames were made by a company whose main
>line of business was making seats for the British Aircraft industry,
>when there was one going back in the 60's Wentworth was supposedly the
>standard used in the British Aircraft industry back then. Anyone
>remember the Comet airliner? I believe SS sells the screws, look under
>"upholstery" for special screws. Hope that is relevant!
>
>Gene
>
>----- Original Message -----
>From: "Ron Fraser" <rfraser@bluefrog.com>
>To: "Dave Munroe" <dave@munroe.ca>, tigers@autox.team.net
>Sent: Sunday, April 15, 2012 11:02:19 AM
>Subject: Re: [Tigers] KUDOS
>
>Dave
>I try to help when I can and that's good enough for me. There will
>always be things about our cars we don't truly know or understand;
sometimes
>all it takes is the desire to look, understand and comprehend.
>OK, that was a veiled promotion of my Original Tiger Engine Study.
>I'm still looking the Ford parts configuration on many of the engine
groups.
>Contact me off list for the information I'm studying.
>
>Also on that 5/16 - 24 screw - I put my SAE thread gage on it and
>the 24 is close but not quite right. It maybe the difference between
>British thread spec and the SAE thread spec. Since you will probably be
>making parts to work that really doesn't matter in this case.
>
>Ron Fraser
>
>-----Original Message-----
>From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
>On Behalf Of Dave Munroe
>Sent: Sunday, April 15, 2012 10:38 AM
>To: tigers@autox.team.net
>Subject: [Tigers] KUDOS
>
>
>Ron:
>
>Now that I have had another look at your email in the cold, hard light of
>day, I just have to comment on how lucky we are as a member of the Tiger
>community to have guys like you, who have these incredible resources at
your
>"finger tips" and are willing to take the time to dig these obscure parts
>out and take photos of them, measure them with great accuracy, and send
them
>to us needy Tiger folk, along with informed comment and opinion, to keep us
>on the right track to properly restoring our cars. (sorry for the long
>sentence, but I had to get it all out!)
>
>I for one am <x-apple-data-detectors://0> supremely grateful, and hope
>someday to discover some truth about our cars that you and you fellow
>"guru's' don"t know
>(unlikely!) so I can repay you in some tangible way.
>
>Many many thanks Ron,
>
>Dave
>
>Sent from my iPad
>
>
>Dave
>Isn't the English language wonderful and so hard to understand sometimes.
>
>Now that we are on the same page; here are 2 Pic of the fasteners.
>
>The button head screw = 5/16 <x-apple-data-detectors://0> x 24 - 1/2" long
>
>The barrels - 5/16 <x-apple-data-detectors://2> x 24 OD = .5" 3/8"
>long
>
>Pivot screw - Total length = 1.06" Threads - OD = .485" looks close to
>16 thread per inch 1/2 BSF ??
>Countersunk screw - .12" shoulder down to threads OD of .41" Threads are
>.27" long countersink thickness = .155" Pin section - OD = .31" length =
>.513
>
>Ron
It is Whitworth. This is the Sunbeam of thread
systems as it is the least likely to come
unthreaded in use. It is the norm for
microscopes and scientific apparatus. (The Leica
thread-mount drove the Japanese and Soviets crazy
when they tried to copy it, as it is a
fascinating conflation, being 39mm by 26
turns-per-inch Whitworth, but, then, E. Leitz
Wetzlar was and remains a microscope
company.) In a similar vein, radio gear uses
Bristol spline attachments and, no, these are NOT
Allen headed machine screws. Use an Allen wrench
on your Questar telescope, and you'll strip the screw heads.)
As Frank Zappa said, sit up in that chair and PAY ATTEMPTION! <he grins>
Marc
msmall@aya.yale.edu
Cha robh b`s fir gun ghr`s fir!
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