US152548A - Improvement in inking apparatus for printing-presses - Google Patents

Description

i l. BRYSDN. linking- Apparatus for Printing-Presses'.

' the rear edge of the form.

UNITED STATES ATENT @Enron JOHN BRYSON, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO HIMSELF, JOHN J. BAILEY, AND JOHN N. O. HANKINSON, OF NEV YORK, N. Y.

IMPROVEMENT IN INKING APPARATUS FOR PRINTING-PRESSES.

Specification forming part of Letters Patent No. 152,548., dated June 30, 1874,' application filed November 25, 1873.

`l'o all whom lit may concern:

Be it known that I, JOHN BnYsoN, of Jersey City, in the county of Hudson and State of New Jersey, have invented an Improvement in Inking Apparatus for Printing Presses, of which the following is a description:

My invention is made for equalizin g the inking operation in printing-presses having a reciprocating bed carrying the form. In rotary printing-presses the ink 'is supplied continuously, and passes to the revolving form of types in the same manner 5 but in many presses where the form is reciprocated beneath the hiking-rollers, those rollers having upon their surfaces a denite amount of printin g-ink, as they comeinto contact with the types the ink is transferred, so that there is less ink upon the roller after the types have passed beneath it than there was before contact, and the quantity of ink on the surface of the form is less toward one side than the other, and this is not prevented by multiplying the inky ing-rollers, as each one acts in a similar manner, and if there is enough ink upon the ad vance edge of the form there is too much at This difficulty is especially noticeable with line cuts and works of art, where the impression or picture requires more ink than the letterpress, and one portion or the other receives too much or too little ink. My invention relates to a means for inking the types from one fountain in opposite directions, so that there is an equalization, one set of form-rollers commencin g when charged at the front edge of the form and inl@ ing toward the back, and the other commencing at the back and inking toward thel front of the form, so that there will be `great equality in the distribution of the ink, and but few rollers are required; hence risk of clogging the form with too much inl; is avoided.

In the drawing, Figure l is a vertical section, and Fig. 2 is a partial plan, showing one end of the ink-trough and portions of the rollers.

The bed a is reciprocated as usual, and b represents a portion of the types, and c a portion of the hiking-table. The paper is fed in any desired manner, and the impression given preferably by a cylinder. These parts, however, are not shown, as my invention is not limited to any peculiarity of press, so lon g as the type-form is reciprocated beneath the inking-rollers. The ink-fountain d is provided with the supply-roller e, that is turned around progressively by means of ratchet-wheels at the ends, or other suitable connections. The transfer-rollers f and g are set to swing with their arms upon the respective shafts f andm g', and they carry ink to the cylinder h and'to the ink table c. To give motion to these shafts j" and g I use a cam, l, that is shaped `to act at the'proper time upon the arm i and connecting-rod 3, to swing the said transferrollers j' and g toward the cylinder h and inking-table c at the proper time, for depositing the ink upon the table as it passes along un ,Y der the said roller g. The composition formi rollers m, n, o, and p are mounted in adjustable bearings of the usual character above the types, and revolved as the form and ink-tablc pass below them. As the bed a, ink-table, and form move back from the impressioircylinder, the ink is deposited by the rollers j" and g, and the types pass in contact with the formrollers p o n m, but the rear edge of the form receives the most ink, because the rollers m a have been inked by the ink-table c running beneath them in advance of the types. During this movement the ink has been `distributed from the cylinder h, composition roller s, and steel roller t to the composition rollers o and p hence, as the form is moved with the bed toward the impression-cylinder, the front portion of the form receives the most ink from the rollers o and p, and the ink, hence, is equalized in amount upon the types. It is to be understood that the extent of surface over which the ink has to be spread in passing from f over 7L, s, and t to the formrollers o p is such that the form of types will have passed back below p o m a before the ink is'spread upon o p hence, as the form goes forward toward the impression-cylinder, the rollers o and p are the most heavily charged with ink, thereby equalizing the inking operation on the form 5 and it will be evident that if the amount of ink upon the rollers 0 p becomes less than that upon the form, so that said rollers 0 p tend to abstract ink from thc form in the last portion of their operation, the saine will be beneficial as removing the accumulation that is likely to exist at this portion oi' the form from the action of the rollers u m, and the rollers h s t 0 p ruiming together, and having` a greater extent of surface than the rollers m n, the inl; will eontinue to be supplied more uniformly to the form during its entire forward movement than is possible with the rollers m. a.

rIhe cylinder h and steel rollers t should be vibrated endwise to equalize the ink more thoroughly. This may be done by any suitable means, sueh as are well known in printing-presses. The rollers themselves are to be revolved by pinions and raeks on the bed, as usual.

It is preferable to mount the ink-trough, roller e, and frame carrying the rollers f and g in slides upon the main frame, and to provide a shaft, e, with pinions takin g into racks upon the frame, so as to move the parts back away from above the form-rollers on n 0 p, to give facility' in changing such form-rollers and the forms.

'Vhen desired to raise the roller s from contact with the steel roller t, the same may be ett'eeted by cams w, revolved by suitable connections and acting upon slide -bars 5, that raise the swinging` frame af, rollers s, and eylinder h and. separate the rollers s and t, and the cams 1U are shaped and positioned so as to lower sueh roller s into Contact with. the roller t, so that the ink-supply shall reach the form-rollers at the time required for applying the ink to such form 5 and, if desired, the

proper inliing will be effected if the form-rollers and their boxes are raised out of contact with the types and lowered into contact when the ink is to be applied, either at the front portion of the form, or at any vother point thereon that may be required, according to the work that is being printed. This may be eli'ected by turning the foot 7 around beneath the downward projection S ot' the journal-box frame. In this case the said frame is to be attached by bolts 9 with a spring, 10, or springs between the nuts ofthe bolts and the trame of the machine, so that the entire box can be slightly raised by the eam w and returned to position by the springs for inking the types.

I am aware that ink has been distributed from one fountain to two sets of form-rollers by two rollers in the fountain; this, however, requires a larger quantity of ink in the fountain7 and this is disadvantageous with colored and high-priced inks.

I claim as my invention- The rollers g and j', that transfer ink from the fountain-roller c to the hiking-table c and cylinder li, respectively, in combination with rollers s and t and the separate form-rollers m n 0 p, reeeivin g their supply of ink from the inliing-table 0 and Cylinder h, substantially as set forth.

Signed by me this 21st day of November, A. I). 1873.

JOHN BRYSCN.

Witnesses Giro. T. IINCKNEY, Unas. H. SMrrn.

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