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<DIV><FONT face=Arial size=2>Are these the same type hitch pins used =
briefly by
Baldwin in their Classic series grands? I needed to twist a bass =
string on
one of these a while back, but was unable to get the string off after =
the round
loop of the bass string had elongated to the point it wasn't possible to =
remove
with out damaging the string.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Mike Bratcher</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=pianobuilders@olynet.com
href="mailto:pianobuilders@olynet.com">Delwin D Fandrich</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A =
title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">Pianotech</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, December 18, =
2003 1:33
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: A Hitch in a
Hitchpin/Del</DIV>
<DIV><BR></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>----- Original =
Message -----
</FONT>
<DIV><FONT face="Comic Sans MS" color=#000080>From: "Joseph =
Garrett"
<</FONT><A href="mailto:joegarrett@earthlink.net"><FONT
face="Comic Sans MS" =
color=#000080>joegarrett@earthlink.net</FONT></A><FONT
face="Comic Sans MS" color=#000080>></FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>To: <</FONT><A
href="mailto:pianotech@ptg.org"><FONT face="Comic Sans MS"
color=#000080>pianotech@ptg.org</FONT></A><FONT face="Comic Sans =
MS"
color=#000080>></FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>Sent: December 17, =
2003 10:18
PM</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>Subject: Re: A Hitch =
in a
Hitchpin/Del</FONT></DIV></DIV>
<DIV><FONT face="Comic Sans MS"><BR><FONT =
color=#000080></FONT></FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>> Del said: =
"Ed,<BR>> >
I had the same dilemma with a Charles Walter Grand, which has =
"Spring<BR>>
Pins"<BR>> > for hitch pins.<BR>> <BR>> No it doesn't. It =
has
groove pins.<BR>> <BR>> Del<BR>> <BR>> <BR>> =
Del,<BR>> I beg
to differ with you. The "groove(d) pins" are known a spring =
pins.<BR>>
Reason being is that their primary use is to connect a spring to a
fixed<BR>> point. I was not referring to the spring steel pins, as =
in
Baldwins! I<BR>> believe if you were to type in "spring pin" in =
your search
engine, you would<BR>> come up with the same "pin" that you =
designed into
the Walter. Sorry for the<BR>> confusion folks. This must be my day =
for
being misread/misunderstood. Damn!<BR>> Oh well, Happy Holidays
anyway!<G><BR>> Joe Garrett, RPT, (Oregon)<BR>> Captain, =
Tool
Police<BR>> Squares Are I<BR></FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>Hi Joe,</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>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. </FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>The pins specified =
are either a
'Groov-Pin Type 67' groove pin or a 'Driv-Lok Type G' groove pin:
</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><IMG height=35 alt="Type 67" hspace=0
src="http://www.groov-pin.com/graphics/gp-typ67.gif" width=119 =
border=0></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>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:</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>The staked groove =
before
insertion:</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080><IMG height=88 =
alt="Figure 1a"
hspace=20 src="http://www.groov-pin.com/graphics/gp-fig1a.gif" =
width=225
vspace=5 border=0></FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>The deformed groove =
after
insertion:</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><IMG height=87 alt="Figure 1b" hspace=20
src="http://www.groov-pin.com/graphics/gp-fig1b.gif" width=226 =
vspace=5
border=0></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>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.</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><IMG height=93 alt="pins5.gif (3997 bytes)"
src="http://www.driv-lok.com/Parts/pins5.gif" width=320></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080>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:</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080><IMG height=117
alt="spring1.gif (2865 bytes)" =
src="http://www.driv-lok.com/Parts/spring1.gif"
width=320></FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS" =
color=#000080>Regards,</FONT></DIV>
<DIV><FONT face="Comic Sans MS" color=#000080></FONT> </DIV>
<DIV><FONT face="Comic Sans MS"
color=#000080>Del</FONT></DIV></BLOCKQUOTE></BODY></HTML>