US463864A - Inking apparatus for printing-presses - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

T. W. KELLEY. INKING APPARATUS FOR PRINTING PRESSES.

Patented Nov. 24 1891.

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7: V iwefar Z44.

(No Model.) 3 Sheets-Sheet 2.

T. W. KELLEY. INKING APPARATUS FOR PRINTING PRESSES.

No. 463,864. Patented Nov. 24, 1891.

Y Nunms "EYE (No Model.)

T. W. KELLEY.

3 Sheets-She'et 3.

IN'KING APPARATUS FOR PRINTING PBESSBS.

VIII/III Patented Nov. 24, 1891.

UNITED STATES PATENT @FFICE.

THOMAS XV. KELLEY, OF BROOKLYN, NEXV YORK.

INKING APPARATUS FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 463,864, dated November 24, 1891.

Application filed March 25, 1891 ToaZZ whom it may concern.-

Be it known that I, THOMAS W. KELLEY, of the city of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Inking Apparatus for-Printing-Presses, of which the following is a specification, reference being had to the accompanying drawings.

The present invention relates to the inking mechanism of printing-presses, and it is applicable to either platen or cylinder presses that is, to those forms of presses in which the inking-rolls reciprocate over the bed or printing-form, or vice versa;

The object of the invention is the even dis-v tribution of the ink over the faces of the type in the form.

It is well understood in the art of printing that during the first turn or revolution of the inking-rolls over the faces of the type the greater portion of the ink is stripped off, so that the portion of the body of the type over which the second revolution of the rollers takes place receives less ink than the part first met by the rolls. The same thing takes place to a greater or less degree even when a small form is in use, or when the inking-rolls do not make a complete revolution over the form. To obviate this difficulty it has been proposed to carry one or more supplementary or supplementarily-acting inking-rolls over the form, but not in contact therewith, and to bring such roll into contact with the type during its return over the type.

My invention relates particularly to improved, simplified, and cheapened means for thus actuating one of the inking-rolls.

The invention also consists of an inking- I roll truck having two treads of different diof the inking-rolls being provided with a.

raising and lowering truck embodying my invention. Fig. 2 is a front elevation view of the form, inking-rolls, the roll-tracks, and inking-plate. Fig. 3 is a detail front view,

Serial No. 386,312. (No model.)

showing one of the inking-rolls at its position on the track where the supplementary roll shifts or changes its tread. Fig. 4 is a side detail view of the same parts and in the same position. Fig. 5 is aside view, and Fig. 6 a planer edge View, of a plain or straight roll-track. Fig. 7 shows the end of an ink- O is the bed. D is the inking-disk. E repre-' sents the reciprocating arms that operate the ink-rollers, the rollers being attached thereto by the sliding rods F and held to contact with the bed and ink-disk by the springs G. These parts are of the usual or any suitable construction, and therefore do not call for fur-- ther description. It is also to be considered that there may be any suitable number of inking rolls singly attached to their carryingarms E or attached in pairs, as also any de sireable number of the rolls may be provided with the trucks embodying my improvements.

In the present drawings I illustrate one pair of rolls H, which are provided with the common form of double trucks so arranged that the rolls are in contact with the type during their passage forward and back overthe bed. The other single roll I is the supplementary roll, and it is provided with my truck, which operates to cause such roll to not touch the type during its forward passage over the type, but to lower the roll upon the type, so that it will ink the same during its return movement.

J indicates the roller-track, there being of course a track on each side of the bed for the fixedly secured to the axis 0 of the roll. On

this sleeve is carried the annular tread-ring P, which ring is held in place by screws Q, passing through it into the hub N, and by spring It, pressing it against the heads of the screws. This tread-ring thus has the capa- 5 city of longitudinal motion on its sleeve, but is held to revolve with such sleeve and the roll-axis. The tread-ring has two treadsa high tread S and a low tread T-and the normal position of the tread-ring is such that the higher tread, or that of greater diameter, is

between the side planes of the track.

The operation of the supplemental inkingroll will now be plain. As this roll leaves the inking-disk it first comes in contact with the upper end of the bed-track, which is at that point of full width. It is therefore the higher tread of the truck that takes the track, and accordingly the roll is lifted so as to pass over the form without touching the faces of the 0 type. As the truck approaches the lower end of the track, or where it is narrowed or beveled off, the higher tread runs off the side of the track and the roll drops or is forced down upon its lower tread, thus bringing its ink- 5 ing-surface to contact with the faces of the type, so that it applies its ink to the type during its return motion. As the roll starts to return the inner vertical face of the higher tread bears against the outer vertical face of o the track and so causes the tread-ring to be moved toward the end of the axis of the roll sufficiently to permit the lower tread only to bear upon the track as the roll returns to the ink-disk. As the roll passes off the upper end of the track the spring in the truck acts to draw the tread-ring inwardly, so that as the roll again goes down over the form the higher tread takes the track, as before.

In Fig. 7 I show the lower tread as integral with the higher tread, so that the two treads of the truck.

move together on the sleeve; but the union of the two treads is only aconvenience of construction and not an essential feature.

In Fig. 9 I show the treads as separate parts In this figure the truck is composed of the two annular tread-rings U and V, which rings close one within the other, the inner ring U being fixed to the axis 0 and the outer ring V having the flange W, between 0 which and the flan ge-plate X on the other ring is located the spring Y, which by expansion holds the rings normally together, with the high tread Z lying over the low tread A.

hen the high tread runs off the bevel K of the track, the inner side of the face of the low tread rests upon the track, and as the truck returns over the track the side of the track bears against the inner edge of the high tread-ring and forces the same along the axis 0 of the roll outwardly, and when the roll leaves the track the high tread is returned to the line of the track ready to carry the roll when next it moves down over the form. By these means it will be seen that the form is inked with fresh rolls from both sides thereof, and that thereby the tendency of one roll or one set of rolls to ink irregularly as they pass upon the form is compensated by the supplemental action of the rolls that ink first from the other side of the form.

- I desire it to be understood that I do not limit myself to the exact forms of truck here shown, as it can be variously modified in construction and yet accomplish substantially the same work. The essential feature of the truck is the treads of different diameters, the higher of which, whether with or independently of the other tread, is capable of motion longitudinally along the axis of 'thetruck, so as to bring the low tread into action to carry the roll and thus changethe relation of the roll to the type. So,also,it will be manifest that the track can be of other form and arrangementand have its truck-shiftingportions or attachments differently located and formed.

\Vhat is claimed as new is 1. A truck for inking-rolls of printing-machines, the same consisting'of a low tread, a high tread movable alongthe axisof the'roll, and a spring acting to hold the high treadin its normal position, whereby the roll "may be raised and lowered on its tread, substantially as and for the purpose set forth.

2. A truck for inking-rolls, consisting of a sleeve or hollow axis adapting the truck to be fixed to the axis of a roll, a low treacha high tread movable along said sleeve,and a spring acting to hold' the high tread in its normal position, substantially as and for the purpose set forth.

3. The combination,in aprinting-maclrine, of an inking-roll provided with a truck "having a high and a low tread, the higher tread being movable against spring-pressure along the axis of the roll, and a track forsuchtruck, which is narrowed or beveled along part of its extent, so that only one of thetreads of the truck will restupon it, substantially as set forth.

4:. In combination, in an inking-roll truck, the sleeve M, the ring P, having the treads S and T, aspring R, arranged between the sleeve and ring, and stop connections between the sleeve and ring limiting their movement relatively, substantially as set forth.

5. In combination, the roll I, having the twotread truck L, composed of the sleeve M and ring P, with the spring R, and the track J, having a narrowed or beveled portion K, all arranged as and for the purpose set forth.

THOMAS W. KELLEY.

\Vitnesses:

F. B. MURPHY, ERNEST HOPKINSON.

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