According to Edison Catalog up until the Feb 1, 1902 the B was used on all
phonographs except for the Gem so I assume in 1902 the Gem had the carriage the
B and C will fit. The C joined in the small top serial numbers around 25,000,
by 43,000 the B lost is arm and for the most part was used only in the Gem. Up
to 29,000 the B had it arm and was used in all Edison machines except for the
Gem. The B replaced the automatic, it got the notch around 18,000, the name by
43,000, around 110,000 when the new top with REPRODUCER on it came out Edison
drilled and tapped the B weight for the extra lead weight, and the 2.2 lead
alloy weight came out around 150,000 which finally gave the B the same if not
more volume than the 1.2 to 1.3 ounce C weight. From 43,000 to 110,000 B tops
will be found with no arm and the word REPRODUCER is not on them. There are 2
styles of top in this range. The early B from 1 to around 6500 has a different
top with thin plating that shows machine marks.
Around 190,000 the automatic weight went from .8 to 1.2 ounce, around
202,000 the automatic got a hinge block and limit loop. In 1901 Mobley was
granted a patent for the dome top and hanging weight on the Edison automatic.
Edison may have gotten these ideas from Mobley as in 1901 Edison took the
weight from the last automatic and placed it on the new dome top. At the same
time I developed the new dome top recorder with its fragile aluminum arms
holding the aluminum cutter in place. He enlarged the arms into wings and the
wings into the common stylus holder shape. Then it went to copper then to
nickel plated copper. Finally the 2 minute recorder got the all new holder
that was used on the 4 minute recorder.
From: pjfra...@mac.com
Date: Sat, 3 Sep 2011 19:09:11 -0700
To: phono-l@oldcrank.org
Subject: Re: [Phono-L] Edison Gem 2 4 conversion question
i had an A, post 1902 by your reckoning below, with a 2/4 kit. it had the
little flip-back gear train as well as the moveable gear. Kind of an
exercise in futility because all the extra friction made the poor, weak,
motor only sometimes able to get through a 4 minute record.
-- Peter
pjfra...@mac.com
On Sep 3, 2011, at 6:47 PM, Steven Medved wrote:
Good point, until the Gem A got the B reproducer in 1902 the carriage would
have to be changed to accomodate the H reproducer. The only box I have
seen for 2/4 Gem kit says B-C on it. I would be interested if the A had a
kit.
From: glast...@comcast.net
To: phono-l@oldcrank.org
Date: Fri, 2 Sep 2011 20:29:53 -0500
Subject: Re: [Phono-L] Edison Gem 2 4 conversion question
These are for Models B and C. Red Gems were combination from the
beginning
and I don't think As could be converted.
- Original Message -
From: mdsor...@aol.com
To: phono-l@oldcrank.org
Sent: Friday, September 02, 2011 6:27 PM
Subject: Re: [Phono-L] Edison Gem 2 4 conversion question
there is no button or switch on this one as far as I remember, you just
move the gear to either engage or disengage giving you 2 or 4 minute.
Mike Sorter
-Original Message-
From: clockworkh...@aol.com
To: phono-l phono-l@oldcrank.org
Sent: Fri, Sep 2, 2011 10:31 am
Subject: [Phono-L] Edison Gem 2 4 conversion question
Greetings Everyone:
I have had a somewhat negative interaction with eBay seller eschalpin
who is
selling a Gem 2 - 4 minute conversion gearing. He claims the unit is
complete.
I asked how you change the gearing speeds and he told me not to send him
anymore
emails. I believe the 'complete' unit is missing the knob and dual size
intermediate gear that does the shifting. Since eschalpin of the
District
of
Columbia won't answer the question I thought I would query this learned
group.
How does one get two gear speeds on eBay item 250883944435
Thanks,
Al
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-- Peter
pjfra...@me.com
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