Posted by Berliner Pumpen on May 25, 2003 at 10:22:41:
In Reply to: Schediwy F cimbasso 4RV and more uploads posted by K on May 24, 2003 at 22:47:34:
Berliner Pumpen basically are two-story rotors, which are pushed up and down in stead of rotated. They date back to the early history of valved brasses.
The shown sample (alternatively found via the link given below here) hints that the Pumpen-casing is seated inside a tubing, which holds the brazed "ears" for the attached tubing. The repair/design/restoration wizards of TubeNet surely could tell whether this is a measure taken to avoid the high-temperature brazing process skewing the Pumpen-casing.
A beautiful, but sadly rare, sample from a brass maker from Poland can be viewed at:
http://photos.groups.yahoo.com/group/yorkmasterpublicphotosxvii/vwp?.dir=/&.dnm=Gorzkiewicz+valve+trombone+3RV.jpg&.src=gr&.view=t&.hires=t
Tubawise there is sample from out of the famous Saxonian area around Markneukirchen:
http://photos.groups.yahoo.com/group/yorkmasterpublicphotosxvii/lst?.view=t&.dir=/Jul.+Rudolph+of+Gotha+basstuba+3RV
The index has been updated to hold the most recent additions, which however can be found more directly here:
http://photos.groups.yahoo.com/group/yorkmasterpublicphotosxvii/lst?&.dir=/&.src=gr&.view=l&.sortBy=ma&.begin=9999&.order=&.done
Klaus Bjerre
Retired teacher
Free music files in .pdf format:
http://groups.yahoo.com/group/YorkMasterBBb/files/
(Approved membership required)
Index over brass instruments gallery and catalogue scans:
http://groups.yahoo.com/group/YorkMasterPublicPhotosIII/files/
(Free for all membership recommended for better view options.
Alternative log in option:
Yahoo identity = brassphotos03 and password = public)