This is a multi-part message in MIME format. ---------------------- multipart/related attachment ------=_NextPart_001_04A9_01C3C552.50922110 ----- Original Message -----=20 From: "Joseph Garrett" <joegarrett@earthlink.net> To: <pianotech@ptg.org> Sent: December 17, 2003 10:18 PM Subject: Re: A Hitch in a Hitchpin/Del > Del said: "Ed, > > I had the same dilemma with a Charles Walter Grand, which has = "Spring > Pins" > > for hitch pins. >=20 > No it doesn't. It has groove pins. >=20 > Del >=20 >=20 > Del, > I beg to differ with you. The "groove(d) pins" are known a spring = pins. > Reason being is that their primary use is to connect a spring to a = fixed > point. I was not referring to the spring steel pins, as in Baldwins! I > believe if you were to type in "spring pin" in your search engine, you = would > come up with the same "pin" that you designed into the Walter. Sorry = for the > confusion folks. This must be my day for being misread/misunderstood. = Damn! > Oh well, Happy Holidays anyway!<G> > Joe Garrett, RPT, (Oregon) > Captain, Tool Police > Squares Are I Hi Joe, And I beg to differ with you...and, yes, I am well aware of their use. = After all, I did introduce them to the piano world.=20 The pins specified are either a 'Groov-Pin Type 67' groove pin or a = 'Driv-Lok Type G' groove pin:=20 The terms "groove pin" and/or "spring pin" refers to how they are fixed = to the hole not to their intended use. For example, a 7/32" (5.5 mm) = groove pin has a body size of just under 7/32" and easily fits into a = size-on-size 7/32" hole. It is fixed by the friction fit of the three = staked grooves extending approximately 1/2 of its length. See the = illustration below: The staked groove before insertion: The deformed groove after insertion: There are a variety of groove pins standard to industry. The Type = 67/Type G is just one of them and it is the only one with an annular = groove machined in one end. True, this type of pin is often used as a = spring anchor, but it is also used as a pulley axle, a pivot pin, etc. = The annular groove can be (and is) machined to a variety of = configurations depending on need. A Google search for "spring pin" turns up a variety of resources, most = of them referring to spring pins as "roll pins" or "split pins" or some = such. The "spring pin" (see the diagram below) is made of 'spring' steel = to a diameter slightly larger than the hole it is to be driven into and = is fixed to the hole by spring action: Regards, Del ------=_NextPart_001_04A9_01C3C552.50922110 An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/ad/83/cd/4d/attachment.htm ------=_NextPart_001_04A9_01C3C552.50922110-- ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 5925 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/d9/ac/c8/49/attachment.gif ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 2104 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/0c/44/55/41/attachment.gif ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 2420 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/b0/a7/28/1a/attachment.gif ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 5403 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/47/02/3a/52/attachment.gif ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 3871 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/59/84/20/c5/attachment.gif ---------------------- multipart/related attachment--
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