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Patent: To Richard Beard. of Earl-street, Blackfriars, Gent., for improvements in the means of obtaining likenesses
1842, 10 March (sealed) 1843 (publication)
Published in "The London Journal and Repository of Arts, Sciences, and Manufactures", Conjoined Series, No.CXXXII, Recent Patents, 1843, p.358-360.
To Richard Beard, of Earl-street, Blackfriars, Gent., for improvements in the means of obtaining likenesses and representations of nature, and of other objects, being a communication. [Sealed 10th March, 1842.]
This invention consists in various modes of coloring the pictures produced by the "Daguerreotype" process.
By the first method, the object is obtained by reducing the colors to an impalpable powder, and depositing them upon different parts of the picture, in succession; the extent of each color being determined by a pattern or screen, resembling a stencil plate.
The mode of operation is as follows: The Daguerreotype picture is first placed in a rectangular frame, which is formed with a projecting edge, of about one-twentieth of an inch in thickness. Over this frame a piece of glass or mica is laid, and a tracing is made upon it, with coloring matter, of the shape of those parts of the picture that are to be colored. From this tracing a number of patterns or screens are formed, one for each color. Each screen consists of a light rectangular frame, covered with tracing paper, upon which all those parts that are required to be of one color are traced, and the space included between the traced lines is cut out; so that when the screen is placed upon the picture, the tracing paper will cover its surface, except those parts which are required to be of a uniform tint.
The colors are prepared by grinding them to an impalpable powder, with a weak solution of gum-arabic, isinglass, starch, or other similar material; they are then dried in a stove, (kept at a heat somewhat less that 212o Fahr.,) and, after being passed through a fine sieve, are ready for use.
In applying these colors, a number of boxes, of a size sufficient to admit the picture, are employed, and into each box, the number of which varies according to the tints required, a few grains (say about fifty) of color are deposited. The color is agitated with a large soft brush, until a dust is created in the box, and the picture, covered by one of the screens, being then introduced, the particles of color settle upon the screen, and upon those parts of the picture that are not covered by it. After this operation, the picture is withdrawn, the screen taken off, and the color removed from the shaded parts, by means of a small pair of bellows; the remainder of the color is then attached to the picture by breathing upon it, which partially dissolves the gum, and the process is completed.
The second improvement consists in mixing the colors with gum-water, and applying them, with a hair pencil, to the underside of the glass that covers the picture; so that when the later is seen through the glass, it will present the appearance of a colored picture.
The third and last method consists in using the colors in a dry pulverized state, as in the first improvement, dotting them on to the picture, with small brushes, in a similar manner to stippling; the colors are then fixed by being breathed upon. [Inrolled in the Inrolment Office, September, 1842.]