US2377663A - Inking mechanism for rotary printing presses - Google Patents

Description

June 5, 1945. H. M. BARBER 2,

INKING MECHANISMS FOB ROTARY PRINTING PRESSES Filed May 26, 1943 2 Sheets-Sheet 1 "MIMI! June 5, 1945.- H. M. BARBER r 2,377,663

INKING MECHANISMS FOR ROTARY PRINTING PRESSES Filed May 26, 1943 2 Sheets -Sheet 2 mviv rox.

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Patented June 5, 1945 .1 INKING MECHANISM FOB/ROTARY l l PRINTINGPRESSES Howard M. Barber, Pawcatuck, Conn., asslgnor,

to C.]B.,Cottrell & Sons Company, Westerly,

13.1., a corporation of Delaware Application May 26, 1943, Serial No. 488,512 6 Claims. (01. 101+351) In rotary printing presses, especially where quick drying inks and drying apparatus are used it'is necessary to run the' pressa sufficient time to bring the heating elementx'of the. drying apparatus up to the required temperature to quickly and efliciently dry the impressions. During this warming-up period the ink suppliedto the dis tribution should be. cut off to prevent its loadin up with an excess amount of ink before the actual printing operation. it

'My invention comprises novel means acting on the oscillating ductor roller for temporarily stopping the flow of ink from the ink supply roller toa roller of the ink distribution during the warming-up period of the drying apparatus and to thereafter reestablish the flow of ink to the ink distribution without affecting the drive for the ink supply roller, thereby keeping the ink at all times in propercondition to be supplied to the distribution. a a l My invention also comprises means of the above character in which the operation of thefsaid means will not afiectjthe angular move'mentof the ductor roller nor its initial adjustment for parallelism with the ink supply and distribution rollersl e l My invention also comprises a manually eperated means for rendering the ductorroller operative or inoperative to transfer the ink from "the ink supply roller to the distribution roller while thepressis running or at rest.

i A practical embodiment of my invention is represented in connection with the oscillating ductor 3 roll of an ink distribution in which the ink supply or fountain roll is intermittently driven.

Fig. 1 represents 'adetail side elevation of so much of an ink distribution as includes my ductor roller throw-off device; the elements being in the positions they assume when the ductorroller has been rendered inoperative to transfer the ink from the supply rollerto the distribution roller.

Fig. 2 represents, a detail end elevation partly in section atone of the sidefra'mes, with theink r Fig. 7 represents a detail section taken inthe plane of the line VII-VII of Fig. 6.

The ink fountain is denoted by I, the iriksupply or fountain roller by 2, the oscillating ductor roller by 3 and the ink distribution roller by 4.

The ink supplyroller 2 may be intermittently driven from a continuously rotating shaft 5 by providing the shaft with a crank disc 6 connected to one end of a rod 1, the other end of said rod being connected to one arms of a rock lever pivoted to swing on the'ink supply roller shaft 9, the other arm ID of which lever carries a pawl I I in engagement with the ratchet wheel lzfast on the said shaft 9 of the ink supply roller.

Each end of the shaft l3 of the ductor roller 3 is journaled in an oscillating end support which comprises an inner member M, an outer member "I 5 and an intermediate socket member 16. These members l4 and I5 are pivoted on an end eccentric portion ll of a handshaft l8 journaled to rock in the side frames.

The innermember M of the end support has an uprisin arm l9 provided with outwardly directed flanges 20 and 2|. between which flanges the shank 22 of the socket member 16 is located. Theouter member l5. hasan. uprising arm 23 alsolocated betweenthe flanges 20 and 2| against the outer face of the shank 22. of. the socket member 15. I i

A bolt 24 passes through the arm 23 of the outer member 15 and an enlarged hole.25 inthe shank 22 of the socket member l6. into threaded engagement with thhe arm IQ of the inner member l4 of the end support to lock the three members together. w

The outer member I5 is also provided with a depending arm 26 having a stud or roller 27 located in the groove 28 of a box cam 29 fast on the continuously rotating shaft 5. g

It will be seen that the rotary movement of the shaft 5 will cause the end supports to rock and thereby oscillate the ductor roller 3 betweenthe ink supply and distribution rollers.

Thelopposite ends of the ductor roller may be l4. When the bolt 24 is releasedthescrew 30 may be turned in either direction to adjust the either direction to change the'angular position of the inner and outer members [4 and-l5 with respect to the socket member l6.

It will be understood that afterthe positions of both ends of the ductor roller'shaft have been accurately adjusted both radially and arcuately to bring the ductor roller intoits proper position with respect to the ink supply and distribution rolls, the bolts 24 may be tightened to'lock the three members, of each. end support together in their adjusted positions. I

The'manually operated means which I have shown for rendering the ductor roller operative or inoperative to. transfer the ink while the press is running or at rest. and without disturbing the initial independent radial and arcuate adjustments of the ductor roller and without affecting the drive for the ink supply rollerwhen the press is running and without affecting the angular movement of the ductor. roller is shown as comprising the following elements: The hub 35 of a hand crank is made fast'to one'eccentric end portion [1 of the handshaft l8 as by a cross pin 33. The crank arm '31 is provided withinwardly andoutwardly directed hollow lugs 38 and 39 in whichthe slidable shank-40 of a handle 4| is yieldingly held at the limit of its inward or lockingv movement bya suitable spring 42 to cause the inner end of the'shank 40 to project into either the hole 43 or the hole 44 in a bracket 45 secured by bolts 46, 4'! to the adjacentside frame I initially adjusted forparallelism while the hand crank is in its normal operative position with the inner end of its shank projected into the bracket hole 44 as shown in Fig. 3. When the ductor roller is to be thrown off or tripped to its inoperative position theinner end'of the handle shank 401 iswithdrawn from its locked position in the hole 44 and the hand crank is swung along the bracket45 and the inner end of the handle shank 40 is projected into the hole 43 in the bracket as shown in 'Fig. 1 for locking the ductor roller in its thrown-off or tripped position. This swinging movement of the hand crank will rock the hand shaft I8 and its eccentrics II to move the end supports radially to move the ductor rollerinto and out of its operative position without disturbing its angular movement. I I

It will also be seen that the relative location of the ductor roller with respect to its hand shaft is changed toprevent'the ductor roller from "contacting with the ink supply and distribution rollers without interfering with the rotative movement of the said ink supply roller.

1. In an inking mechanism for rotary printing presses, ink supply, distribution and ductor rollers, a hand shaft, end supports for the ductor roller eccentrically pivoted on the hand shaft, means for initially adjusting the end supportsto bring the ductor roller into parallelism with the ink supply and distribution rollers, means for retatingthe ink supply roller and' for oscillating the end supports and thereby the ductor roller .between the ink supply and distribution rollers,

and means for rocking the hand shaft to move the ductor roller to its operative and inoperative positions without affecting its angular movement and initial adjustment.

' 2. In an inking mechanism for rotary printin presses, ink supply, distribution and ductor rollers, a hand shaft, end supports'for the ductor roller eccentrically pivoted on thehand shaft,

means for initially adjusting the end supports radially'and arcuately tobring the ductor roller into parallelism with the ink supply and distribuers, a hand shaft,'end supports for the ductor roller eccentrically pivoted on the hand shaft,

means for initially adjusting the end supports to bring the ductor roller intoparallelism with the ink supply and distribution rollers, means for rotating the ink supply roller and'for oscillating the end supports and'thereby the ductorroller between the ink supply and distributionrollers, means for rocking the hand shaft to movethe ductor roller to its operative and inoperative-positions withoutaffecting its angular movement and initial adjustment, andmeans'for releasably locking the hand shaft'in its two positions. 4. In an inking mechanism for rotary printing presses, ink supply, distribution and ductor rollers, .a hand shaft, end supports fortheductor rollereccentrically pivoted on the handshaft,

means for initially adjusting the end supports radially and 'arcuately to bring the ductor roller into parallelism with the ink supply and distribution rollers, means for rotating the ink supply roller and for oscillating the'e nd supports and .thereby the ductor roller between the' ink supply and distribution rollers, means for rockingthe hand shaft to'move' the ductor roller to its operative and inoperative positions without affecting its angular movement and initial adjustments, and means for releasablylocking the hand shaft in itstwopositions; I '1 5. In an inking m'echanismior rotary printing presses, ink supply and" distribution rdllers,' a

, rotary 'drive shaft,v an operativec'onnection be,-

tween the shaft'and the supply'roller'to rotate the roller, a hand shaft having eccentric 'portions, a ductor roller, end supports therefor piv- 'oted on said eccentric portionsan operative con motion between the" drive shaft and said end supports for oscillating the ductor roller between said ink supply and distributingroller's,'means for initially adjusting the end supports to bring the ductor roller into parallelism with t'he'ink supply and distribution rollers, and'means'for rockingthe hand shaft to cause: the end supports to move the ductor roller to its operative and inoperativeposi.

tions without aife'eting the operative connections between the drive shaft and the ink supply and ductor rollers or the initialadjustment of the ductor roller.

6. In an inking mechanism for rotary printing presses, ink supply and distribution rollers, a rotary drive shaft, an operative connection between the shaft and the supply roller to rotate the roller, a hand shaft having eccentric portions, a ductor roller, end. supports therefor pivoted on said eccentric portions, an operativeconnection between the drive shaft and said end supports for oscillating the ductor roller between said ink supply and distribution rollers, means for initially adjusting the ductor roller for parallelism with the ink supply and distribution rollers, means for rocking the hand shaft to cause the end supports to move the ductor roller to v its operative and inoperative positions without affecting the operative connections between the drive shaft and the ink supply and ductor rollers or the initial adjustment of the ductor roller and 10 means for releasably locking the oscillating ductor roller in said operative and inoperative positions.

HOWARD M. BARBER.

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