Kurbel. Patent folding handle-crank to single-spring motor
Double combs with crossing zither attachment, on cast gilt reeded bedplate in ebonised interior, Karrer tunesheet bearing both Philadelphia and Vienna exhibition medals, glass dust lid, in grained case with three-quarter turned column corners and side carrying handles, the domed rosewood veneered lid with crossbanded edge of walnut, line-inlay, and unusual central simplistic stained fruitwood inlaid scene of a seated fisherman in a country landscape, smoking a pipe with a bridge beyond - 29.1/2 in. (75cm) wide, the cylinder 17 1/8 in. (43.5cm)
One distinguishing Karrer patent, which was added in 1881, is the vertical folding crank-drive which makes it possible to wind the spring one turn by winding the crank one turn. Unfortunately, the design is rather clumsy and there is a short window of opportunity where the handle can be folded safely back into the box. Notice how un-wanted contact with the comb and cylinder may easily occur.
'Musical Box Oddments No. 117', H. A. V. Bulleid, pp188-191 - The Music Box, Volume 23, No. VI, Summer 2008