Maelzel Possible
It has been and is a great success and is still in use to this day. It is manufactured by Swiss, Germans, French and Americans competing to open business in a field as limited as the metronomes. Following advances in 1894, Hanson was a metronome consisting of a baton that can be set to oscillate to 2 / 4, 3 / 4, 4 / 4 or 6 / 8 and with movements similar to a director. Amwell is actively involved in the matter. In 1909, White Hunter produces a pocket with a complex mechanism pendulum metronome and whose speed can be adjusted between 40 and 208 revolutions per minute. In 1930, a rocking chair in miniature with a glued vertical command bara and that put in motion on any flat surface, it was in the market. Tube weight in accordance with the tempo. The pulse was silent. With the advent of electricity, many types of metronomes were driven electrically.
Built models with lights flashing to mark time and the beginning of the measure (Morrison, 1936) and models simple with only wand waving (AM English, 1937). Some of them were conceived without having any knowledge of music or the way in which the musicians used the metronomes. Around 1900, was built the first metronome for Pocket Watch Swiss, operating exactly like a clock of flyer – but with a modification that could set a rate from 40 to 208 BPM.What is known, the only survivors of all these attempts to produce an accurate and reliable, metronome that were acceptable by critical musicians, are Maelzel types and a Pocket, the Cadenzia watch. Modern metronomes with the controlled arrival of the alternating current (AC), had been made possible to have clocks, operated electrically and not varied one second for each month or more. This made possible the invention of the metronome electric Franz (1938).
