US276825A - Sectional inking-roller - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. P. JONES.

SEGTIONAL INKING ROLLER No. 276,825. Patented May 1,1883,

Fay. 6.

' WITNESSES:

ATTORNEYS.

(No Model.) 2 Sheets.-Shet 2.

W. P. JONES. SEGTIONAL INKING ROLLER.

- No. 276,825. Patented May 1,1883.

,UNITED STAT S PATENT OFFICE. I

WILLIAMF. JONES, OF BALTIMORE, MARYLAND.

SEQTIONAL lNKlNG-ROLLER.

SPECIFICATION forming part of Letters Patent No. 276,825, dated May 1, 1883. Application fllcd October 16, 1882. (No model.)

To all whom it may concern:

Beit known that I, WILLIAM F. JONES, of Baltimore city, State of Maryland, have invented a new and useful Improvement in Sectional Inking Rollers for Color Printing Presses; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, forming part of this specification, in which- Figure lis a perspective view of a printingpress provided with my improvement. Fig. 2 is a partly end and partly sectional view of my improved inking device, the form-rollers A being elevated and in the act of taking ink from the inking-cylinder. Fig. 3 is a side view. of the same with the rollers on the right of line or w removed. Figs. 4, 5, and 6 are enlarged details exhibiting my invention.

My invention relates to certain improvements in color-printing presses which print in several different colors at one impression. It has reference more particularly to that part of a color-printing press for placing the in'ks of different color upon the main cylinder in stripes, from which cylinder the said ink is taken in corresponding stripes by the formrollers and transferred to thetype. For this purpose rollers have been placed between the ink-fountains and the main cylinder, which were composed" of a series of adjustable diskshaped sections placed upon a shaft, with one of such rollers for each color, and with the sections of one roller arranged to alternate with those of the other roller of different color, so that the ink is transferred by the'same to the main cylinder in a continuous surface, but in stripes of different colors.

My invention consists in the improved construction of these sections and the means for applying-them to their respective shafts, whereby the sections of a roller may be applied or removed, and their relation changed with greater facility than heretofore, as will be more fully described hereinafter.

In the drawings, Fig. 1, is shown a printingpress of well-known construction, in which A are the form-rollers, (shown down,) and B the main inking-cylinder. G D E F are a set of rollers for applying one color, and O D E are a set of rollers for applying another color.

between the soft composition-rollers O and E.

Now, referring to Figs. 2 and 3, it will be seen that the sectional rollers D and D are composed of diskshaped sections a of varying width, and that the sections of one roller, D, exactly alternate with those of the other roller, D and as these sectional rollers are supplied with differentcolored inks it will be seen that they transfer these inks, in stripes corresponding to the width of the sections, to the main cylinders B B, whose periphery is completely covered by said inks in stripes, and from which the form-rollers take the ink in corresponding stripes and transfer it to the type.

Now, in constructing the rollers D and D their shafts b are preferably made in elliptical or double-wedge shape in. cross-section, as shown at Figs. 5 and 6, and the sections a are made with a corresponding-shaped opening, 0, in the middle, closely fitting the shaft, and with a slit, d, upon one side and a cavity, 6, on the other. The object of the slit d and cavity 0 is to permit the sections to be sprung open and slipped onto the shaft by a movement sidewise to the shaft, thus avoiding the necessity of removing the shaft from its bearings in the press and slipping the sections in endwise, and avoid, also, the necessity of removing or disturbing any other sections than the one which it is desired to remove or replace. For holding the sections firmly on the shaft, the two edges of the slit d are fastened togetherby a screw, f. Theobject in making the shaft in its flattened shape is to permit-the rollers by the wedge shape of the shaft to slip sidewise onto it. The object of the cavity 6 is to avoid the breaking of the disk-section into two parts when it is expanded to pass over the shaft. If this cavity were not ii] the disk, the bend would be concentrated at a single point, which would be likely to cause it to break at such point, whereas the cavitycauses the bending to be distributed throughout the are 1 2, and thus avoids this difficulty. In making these sections 1 may form them in one piece, as shown in Fig. 5, in which case they may be made of celluloid, hard rubber, or other analogous material; or I may make them of metal, as shown in Fig. 4, in which case they are made in two parts connected by a segmental spring, g, instead of being cored out.

Having thus described my invention, what. 1

claim as new is- 1. A color-printing roller composed of a shaft combined. with circular inking-sections having a central opening corresponding to the cross-section of the shaft, with a slit upon one side and elastic upon the other, substantially as described.

2. A color-printing roller composed of a shaft combined with circular inking-sections 15 made in one piece of elastic material, with opening a, cavity 0, and slit 11, substantially as shown and described.

WILLIAM F. JONES.

Witnesses:

D. W. RUDY, W. B. HAMMOND.

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