Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 4176577 | Electronic musical instrument of waveshape memory reading type In an electronic musical instrument comprising a keyboard including a plurality of keys, a frequency information memory device for storing frequency informations corresponding to respective keys, a plurality of musical tone forming means including a waves... | 12/04/1979 |
| 4172403 | Method and apparatus for encoding of expression while recording from the keyboard of an electronic player piano There is disclosed a method and apparatus for encoding of expression while recording from the keyboard of an electronic player piano wherein the intensity of the music being recorded is reflected in variations in the power of the acoustic waveform produce... | 10/30/1979 |
| 4132141 | Solenoid-hammer control system for the re-creation of expression effects from a recorded musical presentation There is disclosed an expression system for playback of a magnetic tape record rendition of a musical presentation. The detected intensity level for the bass and treble halves of the keyboard are assigned different data bit positions in the frames of reco... | 01/02/1979 |
| 4121490 | Touch responsive electronic piano A keyboard operated polyphonic tone synthesizer which is touch responsive to the force applied to the keyboard mechanism. Operation of a key operates through a pneumatic transducer to provide an air stream having a velocity proportional to the force appli... | 10/24/1978 |
| 4085646 | Electronic musical instrument An electronic musical instrument providing continuous cybernetic tone finding controlled by functions of the human mouth. The instrument includes a mouthpiece into which air is to be blown from the mouth of a player having a measuring apparatus at least p... | 04/25/1978 |
| 4082027 | Electronics musical instrument In this electronic musical instrument, two separate tone generators of different type each produce a tone corresponding to an actuated key switch. Advantageously, one of the tone generators is of the Fourier synthesis type. In the other tone generator, a ... | 04/04/1978 |
| 4010667 | Rhythm unit with programmed envelope waveform, amplitude, and the like A rhythm unit produces repetitive pulses having one of a plurality of selectable predetermined time relations to each other for use as rhythm or accompaniment signals in an electronic organ or the like. Each of the pulses triggers operation of a modulator... | 03/08/1977 |
