US1751029A - Inking mechanism for traveling cylinder presses - Google Patents

Description

March 18, 1930. P. F. cox ET AL INKING MECHANISM FOR TRAVELING CYLINDER FRESSES' Filed Nov. 19, 1928 I N VEN TOR$ Patented Mar. 18, 1930 umr sATEs PATENT OFFICE PAUL COX AND JOSEPH L. GO X, OF CHICAGO, ILLINOIS, ASSIGNORS TO THE GOSS i PRINTING PRESS COMPANY, OF CHICAGO, ILLINOIS, A COREORA'IION OF ILLINOIS INKING51VIECHANISM non TRAVELING CYLINDER, rnnssns Application filed November 19, 1928. Serial No. 320,321.

Our invention relates to web printing presses of the type shown in Cox Patents No.

988,548, of April 4, 1911; No. 1,457,501, of June 5, 1923; and No. 1,475,566, of November 27, 1923, in which the web is printed by means of traveling impression cylinders from printing surfaces resting upon stationary beds, the impression'cylinders being on impression durlng their printing stroke, and off -1mpress1ondur1ng then .return stroke,

- so as not to contact the printing surfaces,

during which return stroke the web of paper is fed forward between the beds and cylinders.

The present invention relates to the inking mechanism. and specifically to the means for intermittently partially rotating the ink fountain rolls from which ink is supplied to the distributing and'form rollers.

While the invention is primarily designed for use in a web perfecting press, it is applicableto single acting presses; and to other types of presses in which traveling cylinders and inking means are employed.

. We will explain the invention with reference to theaccompanying drawings which illustrate so much of a web perfecting press of the type referred to as will enable the invention to be clearly understood; and summarize in the claims the novel constructions and combinations of parts for which protection is desired.

In the drawings:

Fig. lis a partial side elevation of a web printing press equipped with our improved inking mechanism.

Fig. 2 is a detail sectional view on the line 22 Fig. 1.

' Fig. 3 is a detail view of a modification.

The press diagrammatically shown in the drawings has parallel type beds 1, 1 arranged one over the other in a suitable main frame. Cooperating with bed 1 is a. travelingimpression cylinder 2, and cooperating with bed 1 is a traveling impression cyllnder 2 Said cylinders are mounted in crossheads 3' which are guided in suitableways in the sides of the press frame, and are reciprocated longitudinally of the frame preferably by means of pitmen 3* connecting the crossheads 8 with crank wheels 4:; which may be rotated by any suitable means to cause the cylinders 2 and 2 to travel back and forth over the beds.

In the type of press shown means are provided whereby the cylinders are on impression during one stroke and off impression during their returnstroke. The general construction and arrangement of such presses and of all the aforesaid parts are well known and need no further detailed explanation herein. For further explanation of the construction and operation of such a press ref: erence may be had to the aforesaid Cox Patent No. 1,457,501. The invention in the present case relates more particularly to the means for operating the fountain rolls.

'As indicated in said patent the crossheads carry form inking rollers 5, ink distributing rollers 5 cooperating therewith and ductor rollers 5". The said rollers may be arranged in any preferred manner, their arrangement not constituting any part of the present invention. The ductor rollers willcontact with fountain rollers 6 in ink fountain 6 (which are mounted on the arm adjacent the outer ends of the beds,) and each time the cross Y return stroke of the crossheads.

It is desirable to partly rotate each fountain roll G each time it is contacted by a ductor roller 5'. For this purpose each formtain. roll has been provided with a ratchet. 6' adapted to be engaged by a pawl 7 attached to an arm 7 pivoted on the shaft of the fountain roll, or in axial alinement therewith. The arms 7 of the upper and lower fountains have usually been connected by a link 7 and a'cam has heretofore been attached to the crossheads and so arranged that when the crossheads near the outer limit of their stroke the cam imparts a quick movement to the bar 7 c and causes it to quickly shift the'levers 7 and the fountain rolls. The movement imparted to the rolls by this cam is rapid and jerky because in the opera tion of the press the crossheads are quickly reversed; and it is one object of the present reciprocation of the crossheads, and/this b ject is accomplished by the following means, The lower lever 'Zgis connected by a link "7 which may be separate or integral with the link 7 connecting the levers 7; of both -c upper and' lower fountains 6) to the short arm 8 of an oscillating lever 8 ,which is pivoted at 8 on one of the'side frames below the "crosshead ;'-and the long arm oftheg-levei ,8 extends beside the bed and below the path of the adjacent erosshead, and 'd uring the v inward stroke of the crossheadthe long arm of the lever will be engaged by the crosshe'ad or amember thereon and be depressed therethus oscillating the lever Sand through the link;7 swinging thelevers, 7 upwardly and causing the paWls'? tofimpart a limited amount of rot-atorial movement to the fountam .rolls 6. On the. outward ,movement: of

' and, the link 7 descendsilowering the arms 7 and retracting the pawls 'Z") The outer end ofthe lever'V-dmay be con;- *nectedttoga guide pin 9, pajssi-ng through g guide h1g9 attached'to theframe, and an expansion spring: 9 lmaybe arranged, 218136,"

, tweenrthe lugs 9 and lever 8, to raise the lever 8 when the "crosshead' moves-outward,

1 the spring being compressed when the crosshead moves inward.

' bracket 10 whichmaybeadi ustahl -y attached to the. crosslread a bolt and slot as in 1 As stated the long arm oftheflever -BI is adapted toibe engaged by a member on oriattached to the adjacent: crosshead. Prefera-V 01y we employ a roller 10 mounted on a I dica ted at 10 ,1 09. to

Ifdesired the levers could be "provided with-an inclinedicam slot .8 engaged by the roller10, whereby the lever will be positively actuated in'both its up and down movement r by reason-of the engagement of the roller 10 with the slot,-thus obviating the useof'springs to lift the long arm-of the lever; v

The extentv of ;n1ovement imparted to the levers 'Z for eachreciprocation "oi the; crosshead may be varied in various ways,sas by ad}, usting the bracket 10 on the crossl'iead-,- or

I byadjusting the 7 connection 7 of the link 7 to or from the :pivot'of the lever 8.; or by" ade Vjiistingthepivot 8 ofthe lever. Any or all ,such adjustments could" bemade in well i illustration.

' known manners obvious to those skilled in theart, and therefore do not require detailed 7 With the construction describedit will be seenthateach time, the crossheads moveout ward .thelevers? are lowered'iands pawls T retracted, andtheglongv arm of theglever 8' rises; andas the crossheads move inward the V long arm of the lever 8r-isidepressed' thereby .liftingthelevers 7 and @causing the pawls 17 {to actuate the ratchets 6V and turn v the tain rolls. will be moved quietlyandslowly u' ithoutj arring o'r disseminating ink by sudden quick movements of the fountain rolls. 'Weclaiin:

cylinder, inking rollers moving with the cy1- inder, and a fountain adjacent one limit of movement of the cylinder having a roll adapt-'- 'ed to supply ink to the said rollersya long pivoted leven, extending along and; adjacent the path'of movement' of vthe cylinder and adapted to be-actuatedby theflinearmove mentof the cylinder, andpmeans'actuatedby 1 said lever for'imparting a gentle intermittent V, p I frotary movement .tothe fountain roll. v if the crosshead the long arm of the lever rises fountain rollsthe desired extent. Thus for each reciprocation of the crossheads a fresh supply of ink will be furnishedto each set lso In a printingpresshaving a traveling the-movable system;of rollers, and devices for I rotating thef fount'ain ,roll-,;,along pivoted lever extending along and adjacent the path of movement of the cylinder and aivmember traveling; with theicylinder adapted .to en gage gently and operate the v lever as the cylinder is recipr,ocated;;,, and a, link connecting the said lever withgthe fountain-roll actuating devices. 1 Y

A 3. lnyal-printing press-having a traveling V cylinder,a set of inking.rollersgnioving with rollers, alever and ratchet for rotating -the the cylinder, 'ancink fountain locatedacent one limit of movement of theicylinderhaving a roll adapted to 'supp lylinkjtoi-the csa idiinlri'ng fountainzroll, along pivoted lever ex tending J along; andbesidethepath of movement of f thecylinder, and having :a long arm adapted tobeengaged andgently depressed'by a mem-j ber" traveling withgthe cylinder as the: latter is reciprocated, and a link iconnectinggthe' short arm of the said pivoted leverwith the fountain, rolluactuating device )4. In printing-presshaving a traveling cylinder, reciprocating crossheads for mov ingjthe cylinder, inking rollers rcarried by the crossheads adjacent the cylinder, an ;ink'

fountain located adjacent one limit o'f movein'ent of thecrossheadshaving a roll adapted to'supply inkt othe inking rbllers'pandal lever and ratchet for rotating the fountain roll;

a pivoted lever :lextend-ing along and below the path of, movementjofa crosshead and having along arm adapted-to be. engaged by a member on the crosshead when the; latter is reciprocated, and a link connecting the short arm of said pivoted lever-withthefountain roll.actuatingdevice,

- 25, In printing press having a tim ng 1. In a prmting-press 'having a' travelmgo cylinder, reciprocating crossheads for moving the cylinder, inking rollers carried by the crossheads adjacent thecylinder, an ink fountain located adjacent one limit of movement of the crossheads having a roll adapted to supply ink to the movable system of rollers, and a lever and ratchet for rotating the fountain roll; a pivoted lever extending along and below the path of movementof a crosshead, a roller attached to the crosshead and engaging the long arm of the lever as the crosshead is reciprocated, and a link connecting the short arm of the said pivoted lever with the fountain roll actuating device.

6. In a printingpress having a traveling cylinder, reciprocating crossheads for moving the cylinder, a system of inking rollers carried by the crossheads adjacent the cylinder, an ink fountain located adjacent one limit of movement of the crossheads having a roll adapted to supply ink to the movable system of rollers, and a lever and ratchet for rotating the fountain roll; a pivoted lever extending along and below the path of movement of a crosshead and having a long arm adapted to be depressed by a member on the crosshead as the latter is reciprocated, a link connecting the short arm of the said lever with the fountain roll actuating device, and means for raising the lever after it is depressed.

In a printing press having a traveling cylinder, reciprocating crossheads for moving the cylinder, a system of inking rollers carried by the crossheads adjacent the cylinder, an ink fountain located adjacent one limit of movement of the crossheads having a roll adapted to supply ink to the movable system of rollers, a lever and ratchet for rotating the fountain roll, a pivoted lever extending along and below the path of movement of the crossheads and having a long arm and a short arm, a roller adjustably attached to the crosshead and engaging the long arm of the pivoted lever, as the crosshead is reciprocated, a link connecting the short arm of the said lever with the fountain roll actuating device, and spring means for raising the lever after it is depressed.

PAUL F. COX. JOSEPH L. COX.

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