Date: Mon, 17 May 2010 16:01:02 -0700
From: [email protected]
To: [email protected]
Subject: Re: [Phono-L] Edison Brass Mandrels... some idle thoughts...
Hi George,
Thanks for the help. I really appreciate it.
All the best.
Harvey
________________________________
From: "[email protected]" <[email protected]>
To: [email protected]
Sent: Mon, May 17, 2010 2:00:14 PM
Subject: Re: [Phono-L] Edison Brass Mandrels... some idle thoughts...
Harvey,
An Edison "Home" numbered in the 3400 range would date from February
1898. As I noted yesterday on the ATM board, "Homes" began appearing
with nickel-plated mandrels in October/November 1898. Hope this
helps - -
George P.
-----Original Message-----
From: harvey kravitz <[email protected]>
To: Antique Phonograph List <[email protected]>
Sent: Mon, May 17, 2010 3:09 pm
Subject: Re: [Phono-L] Edison Brass Mandrels... some idle thoughts...
Hi Al,
Thank you for all your help.I really learned a lot from you. I have an
Edison
suit case Home with a 3400's serial number. Do you know if it had a brass
mandrel? It was converted into a 2/4 min. machine either by the original
owner
or a collector. If this indeed had a brass mandrel, I'd love to get it
back to
original.
Thanks,
Harvey Kravitz
________________________________
From: "[email protected]" <[email protected]>
To: [email protected]
Sent: Sun, May 16, 2010 4:04:46 AM
Subject: Re: [Phono-L] Edison Brass Mandrels... some idle thoughts...
Greetings Harvey:
The solid brass mandrels were on the early M and E electric machines.
They
were press fit onto the steel mandrel shaft. Even in those days solid
brass
of that diameter was expensive so few are found to be solid after 1896.
As
the M topworks was adapted for the Springmotor machines the brass mandrel
became a hollow cylinder with brass ends pressed in. It was a thick wall
brass which still carried some weight. The smaller diameter end was
indented
to allow for the needle bearing guard on the endgate. In 1901 the nickel
plated thin walled drawn brass mandrel allowed for a drastic reduction in
brass
costs and reduced the number of machining operations. The indented end
continued for the M and E but the new Triumph line did not require it.
For the
rest of the Triumph production the drawn brass mandrel continued to serve
well.
The Home phonograph had the thick walled hollow brass mandrel with end
pieces almost from the earliest machines. Only the very lowest serial
numbers
are occasionally found with a solid mandrel and the indented end. The
Home
had that thick walled brass mandrel for a long time but wall thickness
was
reduced as nickel plating was added. The drawn thin brass mandrel was
introduced before the 1901 new style cabinet change. The length of the
mandrel
shaft remained the same until the Model B was introduced.
SADLY, there are sellers who swap out the brass mandrel for a later thin
walled nickeled mandrel. They then charge more for the brass mandrel
than
they paid for the whole phonograph. So, you can find a Home with a
serial
number below 9000 with a shiny nickeled mandrel that should not be there.
And
further along there will be an eBay listing for the original brass
mandrel
for a higher price than the mutt machine. Grrrrr ! ! !
I hope that helps. I am away from my research materials so I only
guarantee the above to be 50% correct...
Al
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