Jakob Weimes in Prag 1808
5 and half octaves FF-c'''' - Viennese action
3 kneelevers : Bassoon - moderator - dampers lift
Vienna was the center of Viennese type fortepiano which were developing
fast in seize and compass. The other German cities were following the tradition
and new designs but with a much slower tempo. So this 1808 fortepiano which
has got 5 and half octaves is similar to an up to date Viennese fortepiano of
ca.1795-1800 in Vienna! Another example of Weimes from 1803 with 5 octaves
and from Schiedmeyer in Nürnberg also from the same date and with 5 octaves
and many other similar examples show that they still were making music a bit
more old fashioned and Viennese looked more forward to newer inventions or
developments and additions to the Viennese fortepiano!
Weimes fortepianos were very popular in Prag.
The musiklexikon.ac.at writes ''Die rege Nachfrage nach
preisgünstigen Klavieren führte auch außerhalb Wiens
zur Gründung von Werkstätten, von denen mehrere eine
über den lokalen Wirkungskreis hinausgehende Bekanntheit
erlangten. In Prag waren die Instrumente von Jakob Weimes
(1767–1830) sehr gesucht.''
We should remember that Prague and Vienna were two of the most important central European cities. Mozart composed several important works in or for Prague taste (Don Giovanni and Prague symphony) and it was a German city not a part of Czech yet!
In Germany fortepianos were made almost only after Stein's model, up to ca.1800 and thereafter Walter type became more popular because of its cantabile singing quality, power of sound and robust structure in comparison to very light, transparent sound of Stein-style fortepianos which were followed by his family Nannette and Andre Stein.
Weimes was born in Duisburg (Germany) in 1767 and used to make
fortepianos as a Bürger in Prague from 1798. He was first in
the committee of fortepiano and organ makers (they gave
license to those who wanted to work officially as fortepiano makers)
and then he became the chairman of this committee.
Here another text from the free library ''Manufacture of pianos in the Czech Republic: yesterday and today'' :
The production of pianos, upright and grand, has a relatively long tradition in the Czech Lands. Together let us look back to the 18th century and the origins and development of a field that is today a significant part of the Czech music industry. Let us compare the joys and woes of piano makers of the past with those of present-day manufacturers, and briefly consider at least some of the difficulties faced by current Czech producers especially as a result of the uncontrollable boom in Asian competition which abides by absolutely none of the traditional trading and manufacturing rules.
Pianos were made in Bohemia and Moravia from as early as the end of the 18th century and the number of manufactories and small workshops producing and repairing pianos gradually increased to the order of hundreds. The first grand piano builders at the end of the 18th century included for example Jan Zelinka from 1796 in Prague or Jacob Weimes from 1798, while in Brno the important Buchta family business was established from 1770 and the Ignatz Spitzka firm in 1785. Czech instrument makers were also strongly represented in Vienna.
The nineteenth century, especially the latter half, brought a real "boom" in the foundation of new firms producing grand and upright pianos. Many small workshops were opened which gradually expanded production and by the end of the 19th century there was a settled stratification of producers by size. There were small workshops composed of just the owners and a few assistants, who apart from making instruments mainly provided service--tuning and repairs; then there were medium-sized entrepreneurs operating on the basis of a license for the production and repair of grand and upright pianos and finally quite large producers, whose factories were nationalised by the communists in 1948 and placed under the single state concern Tovarny na piana [Piano Factories], later Ceskoslovenske hudebni nastroje [Czechoslovak Musical Instruments].
Schubert at a Viennese grand with either 5 or 5 and half octaves ca.1818
Prague in the 18th century