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Folding harpsichord
The folding harpsichord was a kind of harpsichord meant for travel. Since it could be folded up into a fairly compact space, it was more easily transported than a conventional harpsichord. The folding took place on hinges and was in the longitudinal dimension, preserving the tension on the strings. The folded instrument formed a package about the size of a large suitcase.〔Kottick and Lucktenberg (1997, 57), Kottick (2003, 258)〕
It is sometimes called by its French equivalent, ''clavecin brisé'', which means "broken harpsichord."
==Method of folding==
As can be seen in the first illustration, the folding harpsichord is built in three separate sections. The folding scheme relies on the fact that the two smaller sections each terminate with a sharply angled segment at the end away from the player. A hinge is placed connecting the far apex of the smallest section to its neighbor. When the smallest section is fully rotated counterclockwise on this hinge, its angled segment abuts that of its neighbor (the join can be seen on in the detail figure below). At this point, the two smaller sections form a single rectangle, similar in size to the longest section. This larger rectangle is then folded vertically on additional hinges (visible) so that it is aligned with the longest section. Once the keyboards are slid inward like drawers and the end covers are folded shut, the instrument is in its compact and portable form.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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