| 单词 | printing key frame |
| 释义 | > as lemmasprinting key frame printing key frame n. now historical a typewriter for producing embossed type, designed for use by blind people.The device was patented by Pierre Foucault in 1849 and was exhibited in London at the Great Exhibition of 1851. ΘΚΠ society > communication > printing > typing > typewriter > [noun] > kinds of typograph1820 printing key frame1851 dial writer1883 stenograph1891 stenotyper1898 stenotype1913 Brailler1951 electronic typewriter1957 manual1972 1851 Cassell's Illustr. Exhibitor 52 Printing key frame by which the blind may write. 1853 C. Tomlinson Cycl. Useful Arts (1854) II. 504/2 He [sc. Foucault] has produced the Printing Key-Frame, a somewhat costly apparatus, sold at 800 francs, but which affords the means of printing off, with considerable rapidity, whatever the blind person wishes to convey to paper. 1982 J. C. Oates Bloodsmoor Romance xxxiv. 280 By the age of twenty, this remarkable young lady had acquired her first patent, for a minor improvement upon Foucault's printing key frame. < as lemmas |
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