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bfoster68
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stumac
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Joined: 19 Nov 2008
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Location: Flinders, Australia
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 Posted: Sat Jun 22, 2019 9:52 pm Post subject: |
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German Wohlrab patent, made by M Koroit in a martin case, the second valve loop is internal inside the valve.
Regards, Stuart. |
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bfoster68
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| Posted: Sat Jun 22, 2019 10:13 pm Post subject: |
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| stumac wrote: | German Wohlrab patent, made by M Koroit in a martin case, the second valve loop is internal inside the valve.
Regards, Stuart. |
Thank you Stuart |
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Bloo42
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Joined: 23 Oct 2018
Posts: 35
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| Posted: Sun Jun 23, 2019 9:55 am Post subject: |
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| stumac wrote: | German Wohlrab patent, made by M Koroit in a martin case, the second valve loop is internal inside the valve.
Regards, Stuart. |
....
How?
_________________
I play....
Eastman Tenor Trombone (Gold)
Bach 50K Bass Trombone (Gold)
Conn 6H Trombone (Gold, Brush Finish)
Conn 22B ('37) Trumpet (Silver)
Wessex Dolce Euphonium (Silver)
King F-Horn (Silver)
Selmer Mark VI Alto Sax (Gold) |
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stumac
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Joined: 19 Nov 2008
Posts: 697
Location: Flinders, Australia
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| Posted: Sun Jun 23, 2019 2:42 pm Post subject: |
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Google US Patent US2665606A, for a drawing of the system, much easier than to describe than in words. I do not think many were made with the three loops internal, I have only seen 1 picture of one, the 2nd valve loop only is more common.
I have one, it plays like a normal trumpet with perhaps a little more resistance on 2nd valved notes.
Regards, Stuart. |
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