[CW] Vibroplex Presentation including Short History of Vibroplex.

[David J. J. Ring, Jr.]

Richard,

You might have a better look at that Original with the red knobs and see if it doesn't 
happen to have jeweled bearings, regular bearings on the top and bottom of the arbor (you 
called it an "axel" which it is quite similar to), the regular bearings end in points like a 
sharpened golf pencil, the jeweled bearing post at the end of the arbor pin is rounded like 
a person's elbow, it fits into a bowl like cup that's actually fitted with a synthetic ruby 
or garnet (earlier models I hear used the softer garnet stone). I have no idea if the garnet 
is synthetic but garnets are much less expensive than rubies!

You very well may have an "Old Stock" WWII Deluxe key that you don't know about, or you 
might have a regular Original that someone wanted to dress up with red finger pieces.  I 
would think the red would class with the black (or gray) base.

73

DR




  Richard Knoppow wrote:
Sun, Jan 09, 2022 at 01:40:40PM -0800

>    This is an interesting history. For some reason I never noticed the
> change in the mounting of the axle (wrong word but will do). I looked at a
> 1961 Original and, indeed, it has a set screw to hold the axle to the
> pendulum. Not on earlier bugs. This bug is also perfectly aligned. My older
> bugs are well aligned because I aligned them. My 1961 Original is a plain
> Jane version not a deluxe or presentation but does have red knobs.
>