US 924322 A
Description (OCR text may contain errors)
G' F; CROSBY.
APPLICATION FILED DBO. 5, 1908.
Patented June 8,1909.
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. APPLIUTION FILED DEO. 5, 1908. V
924,322.' v Patented June. 8, 1909.
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indicated in the drawings by thefshade lines struction of improved means whereby'l a primary colors,
' UNTED STATESl PATENT OEEioE.
Specification of Letters Patent.
Patented J une 8, 1909.v
Implication led iecember 5, 1908. Serial No. 466,107.
To all whom 'it may concern.'v
Be it 4known that I, GEORGE F. CROSBY, a, citizen of the United States, residing at New- `ton Highlands, in thel county of Middlesex and Commonwealth of Massachusetts, have invented certain .new and useful Improvements in Color-Charts, of which the. following 4is a specification.
The object of this invention is the conpninter, or other person interested in the proper harmonizing and balancing of colors, .can determine squickly and with certainty what o'olors, tints and shades wil-l most perttectly .harmonize and contrast.
Referring to =the drawings forming part -of this specification, Figure l vis a plan View Aofa color chart made inaccordance with my invention, one ofthe masks used in connection therewith being represented as more or less broken away. Fig. '2 is a diametrical :trans-verse section of the same.V Fig. 3 is a -i'ace View on Aa smaller scale of the form of 'maskV used for four-color combinations. Fig. 4 is a similar view, but with a part thereof .broken away, of a three-color mask. Fig. 5 is a lsimilar. View of a two-color mask. Fig. -G is a, face view of an extension to the chart.
- The color chart proper consists o'f a large cardpA bearing lupon its face preferably sixty radially arranged strips B yof various colors, tintsjy and shades,'in five equal groups. The. strip; B of each group is one of the five and are so designated on the chart within the circle immediately surrounding the same, as by the words Red, Yellow Green, Blue and Violet Tho color of each of the said five strips is apptropriated therefor 1n Rules of Practice.
Midway between every two of the colored strips B" of a color combining the Patent Office isa strip B equally the :two colors of such strips B. These combined colors areindicated in the `drawings-by combinations of the shade lines used on said two strips B. 'lhese secondary color strips B are also accompanied on the chart by descriptive words, as Blue green Yellow reen Blue violet, Red Violet and Grange l .y
Half way between each strip B-.and strip B is a strip of either white or black, the latter alternating so that on one 'side of green for instance isayvhite strip B3, and on its other side is a blacflilstrip B4. Between l each named strip,
l(that is, the second as green crfblue greens, and a white strip B3 are two stri-ps 1B and B6 of .a lightertint of such color, the one nearer the white str'p' being 'the lighter. In -a like manner, between each named strip B or B and a black strip, are two strips of the same the one nearer the lblack strip being the darker. Suchtints and :shades are indicated in the drawings by the appropriate -color linings, but 'appropriately lighter .or darker,-'that is, either finer yor heavier li-nes.
Within the row of strips B and each in radial alinement with 4the same, are similar strips C in diflerent shades of gray. These shades vary' from black, in alinement -w-ith the white strips 5B", vto white in alinement with the black stri s B4; between such black and white strips being lfive shades of gray grading from Very dark to very. light. Thus arranged, if the printer -Wishesto -know what gray will be in best contrast with'a specified color, he simply -looks for the strip 'C l1n alinement with such color. the specified color be blue green, shade 2 i darker shade of said For example, if l color as such strip B or B"=but of a .darker shade,
color, as indicated by the gure 2 to 'the leftof the blue green the ygray indi cated is one shade removed from white.
While this chart as thus far described is capable .of use, its value is much enhanced =by the employment of a mask D consistingofa circular card having a central opening yor eyelet E tting a pivot F rising from the card A, and formed with radial lopenings G through which certain of said .strlps can be surveyed. I prefer to provide four of these A masks, one with two sight-openings G,- another with three, another with four and the 'fourth wi th five. mask D shown in Fig. 5, has said si Vhtopenings diametrieally oposite cach ot er, whereby, when properly located on the chart, two oppositely positioned lcolor strips B will aloney be visible, as red and blue green, or
orange shade,1 and blue, tint 1.
The mask D shown in Fig. i4 'is formed with three sight-openings G, two a fifth of arcircle apart, and thethird diametrically opposite'the median radius between said two. If this mask were placed on the chart with its first-named openings-at red tint `1, and 'violet tint 1,
sight-openings arranged in two -diametrcal then the third opening would` expose green tint 1 4 shown -in Fig.'3 has its four The first of these, the
a plurality of groups, each group eonstistjng of a named eolor having' a black strip at one side thereof and a white strip at tht, other Side thereof.y and one or more tints of such color between it and the white strip, and one or more shades ot such eolor between it and the lolat'k strip.
4. eolor chart eoinprising a plurality of grolors and shades and tints thereof, and nn .tottatnuiiiher of shades of gray located in ptxtaposition thereto, said grays boing;r (liapostfl to have each thereof in proper eontr: with :i tint or Shade of said eolor.-:.
l i i ing and the outer portions ottheeurd,a11d a ,writes otl eoloi zt|'ips on said exterior portion i arranged elose to said eonrenlrie openings.
eolor ehart zoinprisingr a pluralityv o'f areas of different colors having numerals associated therewith indicative of relative surface areas in which designatedcolors s liouht be associated for proper balancing, and means for selecting a suitable eolorln tetiinony that l elaini the r'oregoinpr invention, l have hereunto set in y hand this nd (la)Y of leeeniber, 1908.
G ERGI) F. CROSBY. Wit ness-es A. l. U PMAM, 15e-'irren l. (intx.