A lot of material about Charles F. Zimmermann has appeared on this blog. The present post revisits familiar documents but addresses details in them that have not received much attention here or elsewhere. In introductory review, Zimmermann coined the term “autoharp” in an application for a US patent headed “Harp,” filed on 10 December 1881, and issued as US257808 on 9 May 1882.
In it he claims to “have invented certain new and useful Improvements in Harps.” The ensuing description provides information not just about the instrument’s structural details, but also the intended playing technique. Zimmermann explains all aspects of his invention by reference to a (pedal) harp, except for its size and shape which are compared to a “common zither.”
The patent makes four specific claims, all relating to damping bars “arranged transversely across the strings thereof, and provided with depending teeth or fingers designed and adapted to come in contact with and silence or ‘cut out’ certain strings.” They serve two musical functions. In one, “the different trigger-bars render those strings silent which do not belong to the responsive chord.” The number of such bars can vary but the second function is served by a single bar, “placed transversely across the middle of the strings of the harp…so adjusted that when moved its triggers touch them lightly at such point, thereby producing the falsetto or flageolet tone.”
The patent drawings show how each bar moves axially against a single spring, and one of its claims is for bars “resting at one end against springs.” However, the description notes that:
Continue reading “Grilled autoharps”

