The Roanoke daily times. (Roanoke, Va.) 1895-1897, 1896-07-18
= PHOTOGRAPHY IN CoLoRs.
a Process Discovered by Chicago Man
Patents Have Been Granted.

Patents Have Been Granted.
The Pittsburg Dispatch says it is able
to announce that photography in colors
is assured. n special telegram from New
York to the Dispatch says:
The results of this long-waited achieve
ment are not simply garish reds, blues
and yellows. Pictures have been taken
that show seventeen distinct shades of
color. The process was hit upon over
night. Years of time and thousands OF
dollars were spent before success was
reached.
For thirty years James D. McDonough
has been laboring in Chicago to reproduce
photographs in colors. Thousands of ex.
periments were performed, till one day,
fifteen years ago. he got upon the right
track. Capital then came to his aid, but
the successful end was not yet.
Over in Dublin, Ireland, Professor Jolly
the scientist, was working along the
same line. Success crowned his efforts
few months ago. He sought letters
patent in London and in Washington.
To his utter establishment he found
MoDonough ahead Of him in an applica-
ton for an American patent Both men,
thousands OF miles apart, working indie
peIrdently, had hit upon the secret Soon
the patert office at Washington was
overwhelmed with rival claims of inven-
tors. The men who had been backing
McDonough came to the rescue. They
were willing that the one whose claim
was allo we'd should get a share in the
profits of the company to be formed
The corporation got a charter and
S1oo,UOO capital was provided for, with
permission to increase TO s., 600. 900. The
Ter, head of the New York office of the
Maxim Powder and Torpedo Company,
NO. 40 Wall street, and +. NJ Dicker-
son, wealthy lawyer and amateur pho
tographer, of No. 253 Broadway, are the
hackers OF the company that expects to
revolutionize the art of portrait and COM
mercial photography.
What TO call the new art was hard
question. The inventor wanted 1t named
the McDonotype. The capitalists would
not hear to 1t. AS yet it is simply the
McDonough process. BY il either in.
Simultaneous or timed exposures. abso-
lutely perfect in detail and tint, can be
taken. The finished photograph looks
IKE an ordinary piece OF work marvel
lousy colored by hand but so simple is
the process, and yet so accurate that it
becomes merely mechanical.
Furthermore, the inventor does not
| propose TO end with the taking of pho.
tographs. Experiments are being made
WHICH, III Is expected, VIII result in trans
| ferring the art to printing 1t will be
| only question of time when a photo
graph can be taken and then printed from
half tone plate on the specially pre-
pared paper, so that all the original colors
| show up true to life
Here is the secret; The process re-
quires specially ruled screen and spe-
cially ruled paper. A multi. colored
screen, ruled by fine lines, formed of
dots or small particles, is employed.
Fundamental colors of the spectrum are
preferably used for these lines-say
orange, red, yellowish green and VIC
let blue. The screen is ruled with lines
IN these colors, about 800 to the inch.
| This screen is placed in front of and in
! close contact with a northochromatic
| plate which is then used in the camera to
the object to be photographed The or
binary black and white negative is thus
obtained in lines corresponding to the
screen in the register.
From this negative a positive is made
IN the ordinary way on glass or paper.
III now the screen, or similarly ruled
one, be laid Oh the positive and moved
until the positive and screen are in regis
ter, the picture comes up in original
| colors.