US1194004A - of cleveland - Google Patents

Description

D. W. FRACKELTON, R. S. TYLER & W. M. REICHART.

INKING DEVICE FOR PRINTING PRESSES. APPLICATION FILED JAN- 29. I9l5.

Patented Aug. 8, 1916.

WITNESSES:

ATTORNEYS received UNITED STATES PATENT OFFICE.

DAVID W. FRACKELTON, OF CLEVELAND, RALPH S. TYLER, OF CLEVELAND HEIGHTS,

AND WILLIAM H. REICHART, OF

CLEVELAND, OHIO, ASSIGNORS TO THE CHANDLER & PRICE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

IN KING DEVICE FOR PRINTINGPRESSES.

Specification of Letters Patent.

Patented Aug. 8, 1916.

Application filed January 29, 1915. Serial N 0. 5,163.

Devices for Printing-Presses, of which the 7 following is a specification, the principle of the invention being herein explained and the best mode in which we have contemplated applying that principle, so as to distinguish it from other inventions.

In platen rinting presses, one approved method of in ing'the form consists in passing thereover a pair of inking rollers which are made of a special, more or less resilient, composition, such rollers being mounted in a reciprocatin carriage and receiving the ink from a suitable fountain or like device disposed at the upper limit of such carriages travel. In order, however, that the ink may be uniformly applied to the' form,

it is of course necessary that the ink thus on these composition rollers be evenly distributed across the same, and it is furthermore necessary that such distribution or spreading 'of the ink on the rollers be continued during the period that they ass across the form, since otherwise the are spaces left on the rollers contact with the first fewlines of the form will fail to properly ink the. succeedingjlines. a secondary roller is frequently provided in connection with the inking rollers proper, the function of which is to spread the ink on the latter, not only during the first part of their travel but during their passage across the form, and in order that a thorough distribution may be effected this roller not only rotates but is also given a vibratory movement, that is a movement longitudinally of its axis.

The object of the present invention is to provide more especially an improved vibratory roller, with means for operating the Accordingly,

same, so that the device as a whole may be readily applied to present machines if desired.

A further object is to provide a device of simple construction and easy operation, so as to be unlikely to get out of order or to require much power.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and claims.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

n said annexeddrawingrFigure l is a side elevational view of our improved device as applied to a typical laten press; Fig. 2 is a broken plan view ofsuch device; Fig.3 is a transverse section taken on the line 3-3, Fig. 2; Fig. 4 is an end elevation of the device as viewed from the left in Fig. 2; Fig. 5 is a transverse section of a detail taken on the plane indicated by the line 55, ig. 1; and Fig. 6 is a transverse section of another detail taken on the plane indicated by the line 6-6 Fig. 2.

Of the printing press proper only the bed 1 is illustrated, that is the partwhich holds the form. This part also supports the disk 2 over which the inking device passes in its travel from the fountain to such form. finch device comprises principally a. series of composition rollers 3,4 fand=5 of ,familiar construction, which are supported at their respective ends by arms 6 and 7 movably mounted in oscillatory frames, springs (not shown) being usually provided in connection with said arms to retain such rollers in more or less close contact with the surface across which they travel. The forward roller 3 has the ends of its spindle 8 directly journaled in arms 6, while the two following rollers, 4 and 5, which are of more particular interest in the present connection, have the ends of their spindles 9 and 10 particularly pointed out in the journaled in a saddle 11 that is pivotally attached to the outer ends of the corresponding arms '7. Oscillatorily supported on the top of each of these saddles is a journal box 12 adapted to receive the corresponding end of the supporting shaft 13 of a thirdgoller 14, which is ordinarily designated a vibratory roller because of the endwise reciprocable movement which it is desirably given. This roller is usually of metai and rests u on the two composition rollers 4 and 5, the egree of preure being ated by means of nuts 15 on threaded studs 16, one of which latter passes through a slot 17 in each of the journal boxes 12, as shown in Figs. 2 and 4. Said roller 1% is keyed at its one end to a sleeve that forms the hub of a pulley 18, rotatably mounted on said shaft but held against endwise movement therealong. As a result of the foregoing construction it will be seen that rotation of the pulley will rotate the roller, while still leaving the latter free to be reciprocated longitudinally of its axis- In addition to the pulley 18 mounted as just described on shaft 13, two idler pulleys 19 are rotatably mount (1 on the spindles 9 and 10 of the composition rollers below. Passing between such two idler pulleys and looped over the pulley on the shaft 13 is a cord or round belt 20, the respective ends of which are fixedly attached to the machine bed 1 at points beyond the extreme limit of travel of the device downwardly across the bed and upwardly across the disk 2. One such point of attachment is prefembly rendered adjustable by providing a take-up as shown in Fig. 1, such take-up consi simply of a threaded metal clip 21 on the belt which passes through an upstanding ear or apelug 22, and has a nut 23 threaded on its outer end. By means of the to oing the belt can be maintained under any v of tension; the tension of such belt, however, will not be varied under normal operating conditions since it is supported in substantial parallelism throughout its length with the path of travel of the grooved blocks 24 and 25 afiixed to the bed or the frame, at each point where the direction of such travel changes From the foregoing construction it will be obvious that as the rollers are moved-either across the disk 2 or the bed 1 of the press, the belt 20 parsing between the idler pullcys 19 and around the driving pulley 18 on the spindle of the vibratory roller, will impart a positive rotative movement to the latter, the direction of rotation depending upon the direction in which the device as a whole is traveling, wh her up or down. Obviously it is a matter of indifl'erence just what form the belt may take, and this term rollers 4 and 5 by means of.

is to be hence understood as conuoting, not simply the round belt, shown for illustrative purposes, but a flat belt. chain, or equivalent device. The longitudinally reciprocatory movement of this roller is produced incidentally to its rotation, by providing at one end thereof, preferably the end removed from the pulley 18, a continuous, reverse thread 26, which is engaged by a finger '27 carried on an arm 28 so as to lie midway of the total travel of the roller during such reciprocatory movement, (see Figs. 2 and 6). By virtue of this engagement, the roller as it is rotated, is shifted longitudinally first in one direction and then in the other the finger or nut traversing the reverse thread. It obviously makes no difierence in which direction the roller is thus rotated, the number of turns required to produce the full longitudinal movement of the roller of course depending upon the steepness or pitch of such thread 26, and may be varied to suit the requirements of the service.

The foregoing construction of inking device, comprising, in combination with the two composition rollers 4 and 5, a vibratory roller driven by a belt disposed alongside of the path of travel of the rollers, constitutes a very simple arrangement for securin the positive rotation of such vibratory ro ler. At the mine time the longitudinal movement of the roller is secured automatically, incidentally to its rotation, by means of the reverse thread and swiveled nut, so that the belt in efiect constitutes the sole operating means for imparting both of the desired movements to said roller. The belt, as well as the vibratory roller, may moreover be readily attached to existing platen presses, since the journal boxes that support the rolleraremounted directly on top of the saddles in which are held the spindles of the composition rollers, while the means for securing the belt to the frame of the machine may be equally readily applied to the latter.

As is well known, in place of an actual disk, such as shown and described herein as constituting the primary ink-distributing device, a roller or drum of relatively large diameter mounted on a stationary axis. is frequently used. The term disk should accordingly be understood as referring to any suitable primary ink-distributing device.

Other modes of applying the principle of our invention may be employed instead of the one explained, change being made as re gards the mechanism herein disclosed. provided the means stated by any of the follow ing claims or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as our invention z 1. In a platen printing prem, the combination with the bed and an larly related inking disk; of-an inking 1o ler adapted to be moved across and in contact with said bed and disk; a distributing roller mounted so as to rotate in contact with said inking roller as the latter is thus moved; a pulley connected with said distributing roller; and a belt relatively fixedly attached at its ends and intermediately supported so as to have one portion lie parallel with the bed and another angularly related portion parallel with the disk, said belt passing over said pulley so as to positively drive the same and said distributing roller.

2. In a platen printing press, the combination with the bed and angularly related inking disk; of an inking roller adapted to be moved across and in contact with said bed and said disk; a distributing roller mounted so as to rotate in contact with said inking roller as the latter is thus moved; a pulley connected with said distributing roller; a belt relatively fixedly attached at its ends and intermediately supported so as to have one portion lie parallel with the bed and another angularly related portion parallel with the disk, said belt passing over said pulley so as to positively drive the Same and said distributing roller; and means for adjusting the tension of said belt.

3. In a platen printing press, the combination with the bed and angularly related inking disk; of an inking roller adapted to be moved across and in contact with said bed and disk; a distributing roller mounted so as to rotate in contact with said inking roller as the latter is thus moved; a pulley connected with said distributing roller; a belt relatively fixedly attached at its ends and intermediately supported so as to have one portion lie parallel with the bed and another angularly related portion parallel With the disk, said belt passing over said pulley so as to drive the same and said distributing roller; and means cooperating with the latter to reciprocate the same longitudinally of its axis as it is thus driven.

4. In a platen printing press, the combination with the bed and angularly related inking disk; of an inking roller adapted to be moved across and in contact with said bed and disk; a distributing roller mounted so as to rotate in contact with said inking roller as the latter is thus moved; a pulley connected with said distributing roller; a belt relatively fixedly attached at its ends and intermediately supported so as to have one portion lie parallel with the bed and another angularly related portion parallel with the disk, said belt passlng over said pulley so as to drive the same and said distributing roller; and means cooperating with the latter to reciprocate the same longitudinally of its axis as it is thus driven, said means including an endless, reverse screw-thread on said roller and a relatively stationary member engaging such thread.

5. In a platen press, the combination with the bed and an inking disk; of an inking roller adapted to be moved across and in contact with said bed and disk; a distributing roller mounted so as to rotate in contact with said inking roller as-the latter is thus moved; a pulley connected with said distributing roller; an idler pulley rotatable about the axis of said inking roller; and a belt supported so as to lie parallel with the path of travel of said rollers and passing under said idler pulley and over the pulley connected with said distributing roller, so as to positively drive the latter,

6. In a platen printing press, the combination with the bed and inking diskof two inking rollers adapted to be move across and in contact with said bed and disk; a distributing roller mounted so as to rotate in contact with both of said inking rollers, asthe latter are thus moved; a pulley connected with said distributing roller; two idler pulleys rotatable about the axes of said inking rollers; and a belt supported so as to lie parallel with the path of travel of said rollers and passing around said idler pulleys and over the pulley connected with said distributing roller, so as to positively drive the latter.

7. In a platen printing press, the combination with the bed and inking disk; of two inking rollers adapted to be moved across and in contact with said bed and disk; a distributing roller mounted so as to rotate in contact with both of said inking rollers, as the latter are thus moved; a pulley connected with said distributing roller; two idler pulleys rotatable about the axes of said inking rollers; a belt supported so as to lie parallel with the path of travel of said rollers and passing around said idler pulleys and over the pulley connected with said distributing roller, so as to positively drive the latter; and means cooperating with said distributing roller to reciprocate the same longitudinally of its axis as it is thus driven.

8. In a platen printing press, the combination with the bed and inking disk; of two inking rollers adapted to be moved across and in contact with said bed and disk; a distributing roller mounted so as to rotate in contact with both of said inking rollers, as the latter are thus moved; a pulley connected with said distributing roller; two idler pulleys rotatable about the axes of said inking rollers; a belt supported so as to lie parallel with the path of travel of said rollers and with said distributing roller, so

as to positively drive the latter; and means Signed by us, this 26 day of January, 1915.

coiiperating with said distributing roller to DAVID W. FRACKELTON. reciprocate the same longitudinally of its RALPH S. TYLER.

axis as it is thus driven, said means includin WLLLIAM M. REICHART. an endless, reverse screw-thread on sai Attested by roller and a relatively stationary member J. E. WILKISON,

engaging such thread. J. W. KIRKPATRICK.

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