[rollei_list] Re: 4x5
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Sat, 3 Jan 2015 19:26:43 -0800
----- Original Message -----
From: "Eric Goldstein" <egoldste@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Saturday, January 03, 2015 5:35 PM
Subject: [rollei_list] Re: 4x5
Thanks, Richard, interesting history.
As you mentioned, the small changes in these designs was
to get around
patent issues, such as Lietz did with the Elmar. Still,
the Elmar is a
tessar-type, just as the angulon is a dagor type.
Of course, if you bought a license as B&L did to produce
the Tessar,
then you did not have to play this game...
Eric Goldstein
Of course B&L was a special case. Before WW-1 Germany
faced heavy import duties on her products so Zeiss arranged
for companies in several countries, The U.S., France,
England and I think some others, to produce Zeiss products
under license. In the U.S. B&L was the licensee for Zeiss
and for Deckel for shutters. When the U.S. entered the war
all properties belonging to the enemy countries were seized
by the Enemy Property Angency (I may have this name slightly
wrong). Following the war this property was mostly returned
but B&L found they could continue manufacturing Zeiss design
lenses and Deckel design shutters (Compur and Compound)
without license. Before the war B&L products had a sort of
triangular trade mark indicating the two other companies it
was licensed by. Deckel was not one of these and I am
drawing a complete blank on the other beside Zeiss. There
had been a similar arrangement for Goerz but the Goerz U.S.
company became independant. In fact, Goerz American
stressed for years that it was an AMERICAN company, perhaps
because of the stong anti-German feeling here following the
war.
FWIW, B&L had been experimenting on a small scale in the
manufacture of optical glass and this operation became of
very great value during the war.
Its been a long time since I studied this history and my
memory slips details, probably all come back at 3AM.
--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx
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