electrographn.

1840 T. Spencer Instr. Multiplication Wks. of Art in Metal by Voltaic Electr. Pref. 8 The instruments themselves [for producing electrotypes] should be called ‘electrographs’.

1854 Househ. Words 22 July 582/1 The glyphograph, and the electrograph—all are so many means of producing copies.

1847 F. Ronalds in Philos. Trans. (Royal Soc.) 137 115 (caption) Fig. 6. Distinguishing electrograph.

1881 Nature 10 Feb. 349/1 This want of accordance between the electrograph and magnetographs was also well marked during the August aurora.

1928 Jrnl. Sci. Instruments 5 145 Most of the instrumental troubles with recording electrographs arise from defective insulation due to moisture condensing on exposed surfaces.

1939 Meteorol. Mag. 74 49 For this purpose Benndorf electrographs were operated at South Kensington and Kingsway for several months in 1934 and 1935.

2006 Atmospheric Res. 81 238 Hourly values of the atmospheric electric field intensity at ground level..were recorded with a Benndorff electrograph.

1866 J. J. E. Lenoir Brit. Patent 1521 6 Figure 1..represents a longitudinal or side elevation of the improved apparatus [for transmitting electric telegraphic despatches] or ‘electrograph’.

1866 B. J. Lossing Pict. Hist. Civil War I. ix. 217 These charges were sustained by an electrograph, which appeared in the Charleston Mercury on the 7th.

1868 Sci. Amer. 11 Jan. 20/1 The electrograph of Lenoir was a modification of Caselli's, and appeared to work very well. We saw numerous pictures copied by it.

1898 Living Age 26 Nov. 537/1 There is no moon—nothing except an ‘electrograph’ which hangs delusively in heaven.

2000 R. J. Shiller Irrational Exuberance v. 100 There was an electrograph, a machine that transmitted pictures by wire (forerunner of the fax machine), and a telautograph, a machine that enabled one to transmit one's signature over long distances.