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Auktionsarchiv: Los-Nr. 80

CAREY, George R. Group of printed and manuscript materials relating to his invention of two selenium-based instruments for facsimile transmission, an ancestor of television. V.p, 1879-95.

Auction 23.02.2005
23.02.2005
Schätzpreis
20.000 $ - 30.000 $
Zuschlagspreis:
19.200 $
Auktionsarchiv: Los-Nr. 80

CAREY, George R. Group of printed and manuscript materials relating to his invention of two selenium-based instruments for facsimile transmission, an ancestor of television. V.p, 1879-95.

Auction 23.02.2005
23.02.2005
Schätzpreis
20.000 $ - 30.000 $
Zuschlagspreis:
19.200 $
Beschreibung:

CAREY, George R. Group of printed and manuscript materials relating to his invention of two selenium-based instruments for facsimile transmission, an ancestor of television. V.p, 1879-95. The collection contains the following: (1) Letter signed from Munn & Co. (publishers of Scientific American ) to Carey regarding publication of an article on his selenium camera in the Scientific American. March 14, 1879. 1-1/4pages. (2) Notebook containing Carey's pencil sketches and autograph descriptions of "a new form of selenium electrical camera," "automatic telegraph -- selenium," and several other inventions. Boston, July 30, 1879. 23ff. (3) Carey's autograph manuscript patent claim for "Instrument no. 2" (a version of his selenium camera), with pen-and-ink sketch and attached printed illustration. N.p, March 9, 1880. 5ff. (4) 8 autograph letters signed to the editors of Scientific American, Engineering News, Progress of the Age and Electrical Engineer, dated between March 11, 1880, and December 24, 1894, regarding the publication of articles describing Carey's facsimile instruments. 8½ pages. total. (5) 2 autograph letters signed to Carey's father, A. C. Carey, mentioning his device. September 21, 1880-November 15, 1880. 3 pages total. (6) Plate 1 (2 copies) and Plate 2 (13 copies). Electrotyped plates of Carey's devices, for use in magazine articles. (7) 2 pencil sketches of machines, dated March 1 and June 16, 1889. (8) Rules and Regulations for Proceedings in the Patent Office. July, 1870. N.p, n.d. 55 [1] pages. Bound with: Patent Laws. 1870. N.p, n.d. 35 [1] pages. With 15 additional leaves added in the back, containing tipped-on printed patent-rule emendations and several pencil sketches of apparatus. Carey's stamp on the front free endpaper, along with an inscription to Carey's father, A. C. Carey, from J. J. Halsted. In 1873 Willoughby Smith, chief electrician for the Telegraph Construction and Maintenance Company, discovered that metallic selenium is electrically sensitive to light, and that its electrical conductivity varies in proportion to the amount of exposure to light. This discovery provided a stimulus to inventors interested in "phototelegraphy," or the transmission of optical images over distances by electricity. Beginning in 1877 a number of proposals for phototelegraphy machines were published. One of the first of these was that of George Carey, an employee of the Boston Surveyor's Office, who outlined three different forms of his device in an article published in the Scientific American on June 5, 1880: "The first was the use of a "selenium camera" consisting of a circular disc of selenium elements connected by separate wires to a similar disc of wire points at a receiver. This was not for immediate visual reception, as a piece of chemically prepared paper was to be inserted between the points and a metal plate. What is of importance was that he conceived of a visual transmitter as a "camera." In another scheme, Carey proposed a visual receiver comprising an array of platinum of carbon points (filaments?) enclosed in an evacuated face plate or cap which would give a luminous image instead of printing the same. Each luminous point was to be connected by a separate wire to the camera. This use of an evacuated faceplate certainly anticipated the cathode ray tube. Being a multi-wire scheme, there was no provision made for synchronization. Carey's third scheme was strictly for phototelegraphy, being a single selenium cell connected with a wire point arranged to trace helical paths by clockwork mechanisms. This was a single-wire system using a ground return" (Abramson 1987, 11). Carey's "selenium camera," in all its forms, is recognized by historians as an ancestor of both facsimile machines and television. The manuscript materials in the above collection appear to refer only to the first two versions of the device, the second of which anticipated the cathode ray tube. According to Carey's notebook, his selenium

Auktionsarchiv: Los-Nr. 80
Auktion:
Datum:
23.02.2005
Auktionshaus:
Christie's
New York, Rockefeller Center
Beschreibung:

CAREY, George R. Group of printed and manuscript materials relating to his invention of two selenium-based instruments for facsimile transmission, an ancestor of television. V.p, 1879-95. The collection contains the following: (1) Letter signed from Munn & Co. (publishers of Scientific American ) to Carey regarding publication of an article on his selenium camera in the Scientific American. March 14, 1879. 1-1/4pages. (2) Notebook containing Carey's pencil sketches and autograph descriptions of "a new form of selenium electrical camera," "automatic telegraph -- selenium," and several other inventions. Boston, July 30, 1879. 23ff. (3) Carey's autograph manuscript patent claim for "Instrument no. 2" (a version of his selenium camera), with pen-and-ink sketch and attached printed illustration. N.p, March 9, 1880. 5ff. (4) 8 autograph letters signed to the editors of Scientific American, Engineering News, Progress of the Age and Electrical Engineer, dated between March 11, 1880, and December 24, 1894, regarding the publication of articles describing Carey's facsimile instruments. 8½ pages. total. (5) 2 autograph letters signed to Carey's father, A. C. Carey, mentioning his device. September 21, 1880-November 15, 1880. 3 pages total. (6) Plate 1 (2 copies) and Plate 2 (13 copies). Electrotyped plates of Carey's devices, for use in magazine articles. (7) 2 pencil sketches of machines, dated March 1 and June 16, 1889. (8) Rules and Regulations for Proceedings in the Patent Office. July, 1870. N.p, n.d. 55 [1] pages. Bound with: Patent Laws. 1870. N.p, n.d. 35 [1] pages. With 15 additional leaves added in the back, containing tipped-on printed patent-rule emendations and several pencil sketches of apparatus. Carey's stamp on the front free endpaper, along with an inscription to Carey's father, A. C. Carey, from J. J. Halsted. In 1873 Willoughby Smith, chief electrician for the Telegraph Construction and Maintenance Company, discovered that metallic selenium is electrically sensitive to light, and that its electrical conductivity varies in proportion to the amount of exposure to light. This discovery provided a stimulus to inventors interested in "phototelegraphy," or the transmission of optical images over distances by electricity. Beginning in 1877 a number of proposals for phototelegraphy machines were published. One of the first of these was that of George Carey, an employee of the Boston Surveyor's Office, who outlined three different forms of his device in an article published in the Scientific American on June 5, 1880: "The first was the use of a "selenium camera" consisting of a circular disc of selenium elements connected by separate wires to a similar disc of wire points at a receiver. This was not for immediate visual reception, as a piece of chemically prepared paper was to be inserted between the points and a metal plate. What is of importance was that he conceived of a visual transmitter as a "camera." In another scheme, Carey proposed a visual receiver comprising an array of platinum of carbon points (filaments?) enclosed in an evacuated face plate or cap which would give a luminous image instead of printing the same. Each luminous point was to be connected by a separate wire to the camera. This use of an evacuated faceplate certainly anticipated the cathode ray tube. Being a multi-wire scheme, there was no provision made for synchronization. Carey's third scheme was strictly for phototelegraphy, being a single selenium cell connected with a wire point arranged to trace helical paths by clockwork mechanisms. This was a single-wire system using a ground return" (Abramson 1987, 11). Carey's "selenium camera," in all its forms, is recognized by historians as an ancestor of both facsimile machines and television. The manuscript materials in the above collection appear to refer only to the first two versions of the device, the second of which anticipated the cathode ray tube. According to Carey's notebook, his selenium

Auktionsarchiv: Los-Nr. 80
Auktion:
Datum:
23.02.2005
Auktionshaus:
Christie's
New York, Rockefeller Center
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