US333490A - Machine - Google Patents

Description

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4 Sheets-Sheet 1.

(No Model) J. B. UNDERW-OOD. CHROMATIC PRINTING MAGHINE. I No. 333,490. Patented Dec. 29,- 18 815.

ATTORNEYS.

(NoMod'eL) V I 4 Shets-Sheet 2. J. B. UNDERWOOD.

UHROMATIO PRINTING MACHINE. No. 333,490. Patented Dec. 29, 1885.

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6 INVENTOR ATTORNEYS.

N. PETERi Phnlwlilhngrmphnr, Wuhirlglon. D.C.

4 SheetsShet 3.

(No Model.)

J. B. UNDE RWOOD.

CHROMATIC PRINTING MACHINE;

Paten t d Dec. 29, 1885.

INVENTOR flfm wwd,

WITNESSES BYwmi ATTORNEYS.

UNITED STATES PATENT OFFIC JOSEPH B. UNDERWOOD, OF FAYETTEVILLE, NORTH CAROLINA, ASSIGNOR TO WM. A. GUTHRIE, OF SAME PLACE.

CHROMATlC-PRlNTlNG MACHINE.

SPECIFICATION forming part of Letters teem no. 333,490, dated December 29, 188 5.

Application filed September 26, 1884. Serial No. 144,046. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH B. UNDERWOOD, a citizen of the United States. residing at Fayetteville, in the county of Cumberland and State of North Carolina, have invented certain new and useful Improvements in Chromatic- Printing Machines, of which the following is a description. I

Figure 1 is a side elevation of a press provided with my improvement. tail view of my inking-roller. Fig. 3 is a sectional view of sleeve and end flanges upon which the rollers are formed. Fig. 4. is a plan view of the press-bed and the inking-rollers. Fig. 5 is a perspective view of one of the side tracks. Fig. 6 is a plan view of the press-bed and side tracks, and Fig. 7 is a vertical longitudinal sectionoftheimproved press through line a: a: of Fig. 4.

The object of my invention is to provide a color-printing press which at the same impression will print different portions of the sheet in diiferent-colored inks and permit the position of such colored impressions to be changed on the sheet as desired, the idea being to'give special prominence to certain portions of the matter of a newspaper or circular for advertising purposes, 'or to make a more ornamental and attractive impression.

Color-printing presses have heretofore been constructed in which inkingrolls supplied with different colors of ink were brought into contact with different parts of the form by means of end wheels on said rolls running on side tracks, which had elevated and depressed portions which could be arranged to allow the roll to drop to contact with the type, or be raised therefrom at points where it was not wanted to give that color, and I do not claim this general arrangement of parts; but my improvements upon the same consist in such detailed construction and arrangement of parts as are designed to meet the practical requirements of this style of printing, which I will now proceed to describe.

My invention is shown applied to what is known as the Campbell press, in which a revolving cylinder. A, Fig. 1, is provided upon its breast with metal strips or hands a, Fig. 4, between which and the cylinder the paper is fed from an inclined table, B, above. (See Fig. 1.) As the cylinder A revolves, a crank, O, on its shaft imparts, through pitman D, a

Fig. 2 is a de-.

reciprocating motion to the type-bed F, Fig. 7, which slides in horizontal guides in the upper edge of the frame-work E. As the cylinder A revolves with the sheet of paper, the type-bed passes under said cylinder in tangential contact therewith, and prints the impression on the paper. As the type-bed passes back, the type are inked by a roller, G, which receives its supply from the ink-fountain H, through a transfer-table. I, which slides under the large ink-roller of the fountain and receives therefrom a supply of ink, and then transfers it to the roller G.

In describing my coloring apparatus I would state that in the present-instance I have arranged it for inking two blue spaces in the second column and two red spaces in the fourth column, as shown in Fig. 6, all the rest of the form being inked with black ink. The type of the colored spaces is set up with the other type'in the form in the usual way, and my invention relates simply to the means for inking the type with different colors of ink. Whenever there is a complete column of black, as the first and third in .Fig. 6, these are inked in the usual way by rollers J J, Fig. 4., which receive black ink from the transfer-table I as it passes under them; but for the second and fourth columns these each have two inking devicesthe second column a blue-and black one, and the fourth column a red and blackone-and in inking these ool- 8 umns as the type-bed passes under the cy1in-' inder the black roller drops down and inks the black type at the head of the column. Then the black roller is lifted up and the color-roller drops down and inks the colored 0 space. Then as the type-bed passes farther' the color roller rises again and the black one is again dropped to contact, and if there are two color impressions in the same column, as shown in Fig. 6, this alternate, action of the 5 rollers is again repeated. To regulate this action, the color-rollers K and L, Fig. 4, are j arranged upon a shaft, M, which is hung in the rocking arms M ofa shaft,.M, and which shaft M is provided with wheels M, that run I00 upon the middle one, N, of the three tracks N N N at the edges of the frame, which are duplicated on opposite sides of the machine and are connected to and move with the typebed. K L are the black-ink rollers of these [05 two-color columns, which are also mounted upon a shaft, 0, hung in the rocking arms of a shaft, 0". This shaft Ois provided with wheels Oflthat run upon the inner one, N, of the three tracks. These two tracks N and N are constructed with elevated and depressed portions, so as to raise the rollers M O*,or allow them to drop down,according' as it is desired to have the color-rollers K L in contact with the bed,or the black-rollers K L,which alternate with the color-rollers in the colorcolumns. These tracks are formed of plain beds with screwholes ain them and sectional blocks b that are about one-eighth of an inch in thickness, or just enough to raise the inkrollers from the type. \Vhere the raised portions I), exist in one track, N, the absence of said blocks in the other track, N, forms a depression, and when the ink-roller wheels M or O are on the depressed portions the inkrollers are in contact with the type'bed, and

. when said wheels are on the raised sections b the ink-rollers are out of contact with the type-bed, and these sections b may be transposed by their screws from one track to the other, according to the timing of the action of the wheels and the location of the colorspaces.

Now, I am aware that the general principle of this action is not new, as shown by the English Patent No. 408 of 1855, and that similar tracks have been made of sectional blocks screwed to place. My invention is distinctive in this connection, in that the track-sections b are all of the same length, and the track-bed has its screw-holes a of each track the same distance apart and adapted to the screw-holes of the track-sections, so that the sections being made of a length to represent newspapersquares, any amount of color-space may be arranged for by being built up of these tracksections by simply transferring the track-section b from one track to the other, the screws and screw-holes serving to connect them to the bed, and the said transfer serving to effect not only the building up of the elevated track on one track, but serves at once to create the corresponding depression in the other track. With this arrangement it will be seen that when the typebed runs under the wheels M O the color-rollers K and L act alternately with the black-rollers K L of the same colnnin, the color-rollers dropping down on the spaces to be colored, and. the black -rollers dropping down on the spaces to be black. and giving their respective colors of ink to their respective spaces.

To change the position of the color-spaces in the same column, the shafts M and O, with their rollers, are adjusted close to or farther from the cylinder A, and the blocks b are shifted from one track, N, to the other, N, as is required to gve the proper timing to the alternate action of the rollers.

To change the color-spaces from one column to another, the rollers K K and L L are adjusted along the shafts O and M longitudinally,

and to permit this the rollers are formed around a sleeve, 0, Fig. 3, having end flanges, d, and are then rigidly fastened to the shaft by setscrews or keys, as shown in Fig. 2. The value of this adjustment of the sectional ink-rolls longitudinally on their shaft and transversely to the press may be seen, when it is understood that in wedging up the form in the chase the columns might be slightly displaced to one side or the other of the sectional rolls, which difiiculty is easily remedied by simply loosening the set-screw and readj usting the sectional roll to correct registration with the column to be inked with that color.

For inking the color-rollers K and L special ink-fountains H are used. (See Figs. 1, 4, and 7.) These fountains are fastened by a set-screw to a bar, I, crossing the frame transversely, in which bar is a slot, e, to permit the ink-fountains to be changed from column to column. This bar P is also designed to be adjustable to or from the cylinder by flanges f and set-screws, Fig. 1, to correspond with the adjustment of the ink-rollers.

In constructing the color-rollers K and L they are madea little shorter than the width of the column, and the black-rollers J J a lit tle wider, so that the lead lines shall be inked black, and there is no blending of the colors with the black. I may also arrange on the arms of the rollers soft felt or leather scrapers Q.

(see Fig. 4,) which by scraping or wiping the ends of the rollers prevent the accumulation of ink at the edges, and give a clean sharp edge that prevents blurring. This I propose to place on all theink-rollers, if desired. I The outer track, N is a plain one, and is designed to receive the wheels J of the rollers J, to give them a positive motion of their own independent of the frictional contact with the type-bed, so that the type will not be blurred when first struck by the said inking-roll.

Having thus described my invention, what I claim as new is 1. In a eolor-printing press, the combination, with the type-bed and the color-inking rollers, one being arranged to traverse the other, of a set of wheels on the ends of the rollers, and a corresponding set of tracks in line with the wheels, and constructed of a bed with screw-holes aand equal tracksections b, having screw-holes adapted in spacing to the screw-holes of the bed, and arranged, as described, to be transferred from one track to the other, as and for the purpose set forth.

2. The combination, with the press having frame E and cylinder A, of the sliding typebed F, having on a level with its type an inktransferring table, I, color-fountains arranged upon the frame E, and the final inking-rolls, of which the roll of one color derives its ink direct from its fountain, and the other of which final inking-rolls derives its ink from the other fountain through the transfer-table I, substantially as shown and described.

Witnesses: JOSEPH B. UNDERWOOD.

WM. HUssLn, Gus. B. SHEPHERD.

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