US1977793A - Inking mechanism - Google Patents

Description

Oct; 23, 1934. M. A. DROITCOUR 1,977,793

' INKING MECHANISM Filed Feb. 27. 1931 4 SheetsSheet ,l

INVENTOR .5 @Q 5. w c A H E G m Q. OW A Oct. 23, 1934. I M. DROlTCOUR 1,977,793

INKING MEGHANI SM Filed. Feb. 27, 1931 4 SheetsSheet 2 9 INVENTOR M/CHfiEL H. DRUIYCOUR Oct. 23, 1934. M. o cou I 1,977,793

INKING MECHANISM Filed Feb. 27. 1951 V 4 Sheets-Sheet 3 I N V E N TO R ICHHEL HDm/rcou/e BY m5 ATvTORfiJLz/L Oct. 23, 1934. M. A. DROITCOUR I INKING MECHANISM 4 Sheets-Sheet 4 Filed Feb. 2'7, 1931 INVENTOR Mama :4 DRO/TCOUR fizl fllfl N BY HIS ATTO Patented Oct. 23, 1934 ED STATES PATENT OFFICE INKING MECHANISM Michael Andrew Droit'cour, Glevelalid Ohio, as- Signor to Harris-Seybold-Botter Company, v Cleveiand, Ohio, a corporation of Delaware Application February '27, 1931, Serial'No. 518,632 11 Claims. (01. 101-357) My inventionrelates to improvements in printing machinery, and is more particularly directed to improved inking mechanisms therefor by which the ink is delivered to the inking rolls of 1.5 the printing-press in uniform and regulated quantities. The objects of my invention are, among other things, to provide an improved inking mechanism actuated from the press whereby the ink '10 distributing rollers which carry the ink to the 29 inking rolls are readily accessible for cleaning or readjustment, and may also be removed or replaced without disturbing in any way the operating mechanism whereby the ink distributing rollers are rotated and vibrated relatively to one as another in timed relation with the press.

-.A further object isto provide an improved mechanism whereby the vibration of the ink distributing' rollers relatively to one another may be regulated from zero to maximum according to requirements by means of a sliding block COI'IIIBC'. tion adjustable in the actuating cam-lever and the rockarm connected with the vibrating mechanism'inconjunction with releasable means to disconnect the vibrating mechanism when the ink distributing rollers are lifted outof their operation contact with the inking rolls of the press. Furthermore I have provided novel means for securing the proper vibration of the distributing rollers so arranged that the roller surfaces do 4 notreturn over the same path as in their forward stroke thereby eliminating objectionable fghost- 1ng.

A further object-is to provide a continuously rotating fountain roll operating in coaction with the oscillating ductor roll with novel means for operating the ductorso that it will initially contactwith the fountainroll along the same peripheral line on the latter in each cycle of rotation of the fountain roll. My specific embodiment of such means comprises the useof a differential double cam for oscillating the ductor always to bring same into contact with the fountain roll at the same relative line as just mentioned, but varying the dwell for controlling the duration of contact by adjustment of the differf ential cam for lifting theductor with means for so shifting such cam, all of which may be accomplished while the press is .in operation.

With these and other objects in view, my invention comprises certain constructions hereinafter described and then particularly pointed out in the claims. A preferred embodiment of the invention is shown in the accompanying drawings in which Fig. 1 is a side elevation of the ink fountain stand and associated inking mechanism in relation to the inking rolls as embodied in a fiat-bed printing press;

' Fig. 2 is a fragmentary top plan view of Fig. 1;

Fig. 3 is a plan view of the ductor operating mechanism located back of the fountain roll at the left end of Fig. 2;

Fig. 4 is a detail sectional view on the line 4--4 of Fig. 3; Fig[ 5 is a sectional view of the differential cams taken on the line 5--5 of Fig. 3;

Fig. 6 is a detail sectional view on the line 66 of Fig. 1; N

Fig. 7 is a side elevation showing the inker carriage retracted from its operative Fig. 1 position with the mechanisms for vibrating the distributors and oscillating the ductor disconnected;'

, Fig. 8 is a detail sectional View on the line 8-8 of Fig. 2; and

Fig. 9 is a section taken on the line 9-9 of Fig. 8.

Similar numerals refer to similar parts throughout the several figures.

Referring, to the drawings, the side frames 10 and 1 1 of the-presssupport the impression-cylinder 12 and the reciprocating formebed 13 in the usual way. The shaft 14 of the cylinder 12 is journalled in the sliding blocks 15 (one being shown in Fig. 1) held in the slots 16 in the sideframes 10 and 11. Resting on the bottom of the slot ,16 is the-pin 1'7 having its upper end extending into a. hole drilled in'the block 15 and surrounded by the compression spring 18 held between the collar 19, and head 20 of the pin 17.

i The upperiend of the block 15 carries the rockshaft 21 to which is secured thetoggle levers 22 and 23,,the lever 23 rocking against the adjustable plate 24 slidably held in a fixed position in the slot 16 by the adjusting screw-bolt25. Affixed to the, shaft 21 is the arm 26 towhich is pinned, the vertical rod 27 pivoted .to the rock arm 28 pinned on the shaft 29 in the side-frame 10. The shaft 29 carries the rock-arm. 3 0 to which is pinned the cam-bar 31 sliding in the bracket 32 secured to the side frame 10. The

bar 31 has the cam-roller 33 riding on the cam 34 fast to the cam-shaft 35 journalled in the sideframe 10 to actuate the cylinder 12 in relation to the bed 13. In Fig. 1 the cylinder 12 is shown in off impression position; when the bar 31 moves to the left, the toggle levers 22 and 23 are straightened to bringthe cylinder 12 into printing contact with the bed 13 in the-usual-way.

The cam-shaft 35 is driven in a clockwise direction (Fig. 1) by the gear 36 engaging the gear 37 on the shaft 35, the gear 36 being actuated through the intermediate gear 38 driven by the gear 39 on the stub shaft 40 journalledin'the' side frame 10. The shaft 40 carries the. pulley 41 driven by the belt 42 actuated from the=electric motor 43. c

The ink fountain 44 holding the ink-supply is mounted on the movable inker carriagelfi located .isthe slotted arm 109 in which slides the movabove the side-frames 10 and 11. The fountain 44 carries the fountain roll 16 which is continuouslyrotated'by. the gear 47 'fastto the fountain roll shaft 48, the gear 47 engaging'the intermediate gear 49 which engages the gear 50 on the cam-shaft 51. j The gear 50 isdriven by the gear 52 on the shaft'53 journalled' in the carriage 45, The shaft 53 has pinned thereto (Figs. 3 and -4) the bevel gear 54 driven by the bevel gear' 55-on the top'of the vertical shaft 56 journalled in the carriage 45. T I i The lower end of the shaft 56 carries the clutch member 57 having the slot 58 off center of the shaft 56, the clutch member 57 being adapted to be engaged by the clutch member 59 pinned to the upper end'of the shaft 60 (Fig. 4) The clutch member 59 has the lug 61 also off center relatively to the shaft 60 to engage in the slot 58 when the. clutch members 57 and 59 are'in operative position as shown in'Fig. 4. This off-center construction enables the clutch to be engaged only in one position in timed relation with the press. The shaft 60 driven by the bevel gears 62 and 63, the gear 63 being'secured to the horizontal shaft 64 which carries the bevel gear 65 engaging the bevel gear 66 on the. short shaft 67 which carries the bevel gear .68 driven by the bevel gear 69 mounted on the'mai'n'camshaft 35; all asshown in 1.

Referring to'Fig. 1, the 'form bed13i's slidingly supported on the spaced-apart rollers 70 revolv ing in the carriage 71' on which is'm'ounted the rack 72. The bed 13 isreciprocated in theusual way by the gear 73'housedin' the carriage '71 which gear 73 engages the rack 74 fast to the bed 13 and also therack7 t? secured to the sideframe 10; also fastened to the carriage '71 is rack 75 which engages gear 76 secured to the shaft 77, the shaft 77 carrying thegear 78 thatjmfeshes with the main driving gear '79f'for the distributing "and inking v rolls. By this mechanism the inking mechanism proper isactuated from the bed 13 as the latterisreciprocated beneath the impression cylinder 12. j I j The form inking rolls 80, 81,82 and 83 are removably journalled in open'bearings 84 mounted on brackets 85 (only one beingshown in Fig. 1)

securely bolted to'the press sideframe s 10 and 11. HThe four form rolls -83 are oscillatedin conjunction with .the printingsurfaceiof the fo'rm-bed'13 by being operatively connected with the" reciprocating form-bed 13 by the gears '78 and 79 which engages the, gear 86. Thegear .86 is secured to one end of the shaft '87 of' the steeldistribu'ting roll 88"(Fig. 3), and the other end of the shaft 87 carries the gear'89, meshing with intermediate gear 90 which engages the tact with the ductor roller.

Means are provided for vibrating the distributing rolls 88, 93 and 97 carried by the inker carriage 45 which are best shown in Figs. 1, 2, 6, 8 and 9:' The cam 103 on the shaft 35 has cut therein thecam-groove 104 through which rides the cam-roller 105 pinned to the arm 106 pivoted on shaft 107 fastened to the side-frame 10 (Fig. 6),

Pivoted "on 'th'e'shaft 108 in the sideframe 10 able block 110 and stud 111 to loosely hold the arms-106 and 109'in'predetermined relation-:to oscillate in unison underthe-influence of the'cam' 103. "The upperen'd of the .arm 109-is provided with the'hook 112 to engage the pm 113 in the horizontal rack-bar 114. When the block 110 is moved downwardly in the slotted arm 109 by the operator'until such block 110 is centered. on'the shaft 107, no reciprocating movement will be imparted to the rack-bar 114; when-the block 110 is moved upwardly (Fig. 1) inthe slotted arm 109, the movement of the rack-bar .114will be increased to maximum. a 1 1 By this mechanism the amount of-vibration of the distributing rolls 88, 93 and 97 may be variably adjusted from zero to maximum to suit the requirements of the job on the press. Referring more particularly to Figs. 1, 2, and 9, the end of the rack-bar 114 engages the toothed sector 115 fastened to the'stub-shaft 116 journalledin the brackets 1'17 and 118 s'ecured to'the side-frame 10- (Fig. 8). Pinnedto the upper end of the shaftllfi is the segment disk 119 having the hole 120 out therein to-be e'ngagedby the spring-pressed pin 121 carried by the circular housing 122 fastened to the lever 123 f-ulcrumed on the stub shaft 124 carriedby the bracket 125 secured to-the side-framev 10. The lever 123' in its oppositely-disposed arms (Fig. 2) carries the pivoted-rollers 126 and'127 which engage .theflanged spools 1-28 and. 129 fastened respectively to the shafts 92 and 9601? the distributing rolls 93 and97 (Fig. 2).- The spool 128 fits snugly to theroller 126 on thelever 123, but the spool 129hasa free annular space for the'roller 127 to :move laterally beforeen'gaging-the flanges of the spool 129 fast to the shaft 96 of distributing roll 9'7.'.

Before the form-bed 13 reachesits extreme travel to the left (Figs. 1 and 2),-the cam 103 reverses the movement of the arms of the lever 1'23 and thedis'tributing-roll 93 immediately follows since there is no play between the flanges of the spool 128-for the roller 126; on. the other end of the lever 123, however, the'roller 127- has room or play between the flanges of the spool 1 29 so that the distributing roll 97 does not vibrate until the form-bed 13 has reached its extreme travel to the left and isthereafter returning to the right.

The rack 130 looselymounted onthe shaft 96, but held against longitudinal movement-on this shaft by the collar 131,"engages the-'double-end segment 132 which engages-the rack 133'Ioosely mounted on the" shaft 87 ofthe roll 88, but held against longitudinalmovement on this shaft 8'7 by the collar 134. Ey this mechanism the distributing rolls 88, 93 and 97 are variably vibrated through the mechanism heretofore described actuated by the cam 103.

Referring to Fig. 1 I have indicated several positions of the cam 103 which makes one revolution for each cycle of the press: The 10 portion marked A indicates the dwell of the cam when revolving during the reverse travel for the formbed 13, while the 30 portion marked B indicates the reverse travel of the mechanism for vibrating the distributing rolls 88, 93 and 96.

The ductcr-roller which is oscillated between the fountain roll 46 and the steel roller 101 (Figs. 1 and 7) is mounted on the shaft 136 carried at one end (Fig. 3) by the arm 137 pinned to the rock-shaft 138. The other end of the shaft 136 is carried by the arm 139 adjustably pinned to the shaft 140 to which is pinned to the arm 141 secured to the front end of the rock-shaft 138 (Fig. 2), whereby a shifting of the axis of the ductor-roller 135 may be made by the pressman as desired relatively to the steel roller 101.

The means for oscillating the ductor-roller 135 is best shown in Figs. 1, 2, 3, 4 and 5: The camshaft 51 has pinned thereto the bevel gear 142 and cam 143, the gear 142 driving the bevel pinion 144 housed in the worm-wheel 145, which pinion 144 actuates the bevel gear 146 having keyed thereto the cam 147, both gear 146 and cam 147 being free to rotate on shaft 51.

The gear 146 is held in operative relation with the pinion 144 by the collar 148 all as shown in Fig. 4. The worm-wheel meshes with the worm 149 fastened to the revolving shaft 159 J'curnalled in the bracket bearings 151 and 152 mounted on the horizontal plate 153 of the inker carriage 45. The outer end of the shaft carries the hand-wheel 154 as shown in Fig. 3. When the shaft 150 is rotated in either direction a differential rotating relation is set up between the bevel gear 146 along with the cam 147 and the cam 143. The ductor rock-shaft 138 has pinned thereto the cam-arm 155 carrying the cam- rollers 156 and 157 that ride on the cams 143 and 147 respectively, thereby causing the roller 101 whenever theroller 135 shrinks in diameter.

Means are provided for tripping the ductorroller 135 to hold same from its normal oscillating movements, best shown in Figs. 1, 2 and 7: The ductor rock-shaft 138 carries the arm 158 to which is pinned the depending link 159 fulcrumed at 160 and having cut therein the notch 161 which engages the housing 162 secured to the inker carriage 45 (Figs. 1 and 2) and holds the ductor arms 137, 139 and 141 from swinging to the left by the action of the spring 163 coiled around the shaft 138 and secured to the collar 164 and ink fountain 44 (Fig. 2). The lower end of the link 159 engages the transverse pin 165 having the handle 166 carried by the horizontal rod 167 sliding in the block 168 fastened to the side-frame 10.

The end of the rod 167 is rounded at 169 to bear against the rod 27 and cam-collar 170 fastened to this rod 27 (Fig. 1). Ihe spring 171 fastened to the block 168 and the pin 172 on the rod 167 normally pulls the latter to the right (Fig. 1). When the impression-cylinder 12 is lowered by the rod 27 into printing contact with the form-bed 13, the cam-collar 170 engages the rounded end 169 of the rod 167 and moves the latter to the left (Fig. 1), thereby holding the link 159 from engagement with the housing 162 whereby the ductor roller 135 may be oscillated and brought into contact with the fountain roll 46. When the press is tripped with the parts in the position shown in Fig. 1, the cam-collar 170 does not engagefthe rod 167 so that. the link 159 is held latched in the housing 162 so that ductorroller arms 137, 139 and 141 do not have a full movement (to the left Fig. '1), and the ductorroller 135 can not contact with the fountain roll 46. i Y

, Means are also provided for manually looking the rod 167 against movement best'shown in Figs. 1 and 2: The upper part of the rod 167 has the hooked recess 173 which can be locked to the bracket 174 by raising the handle 166 when the rod 167 is moved to the left (Fig. 1) sufiiciently to unlatch the link 159 from the housing 162. This mechanism will allow the ductorroller135 to contact with the fountain roll 46 even when the press is tripped. However when the press is started for printing, the cam-collar 170 pushes the rod 167 still further to the left whereby the hooked recess 173 is disengaged from the bracket 1'24 and the spring 171 returns the rod 167 to the right for its normal position and operation.

When the operator wishes to ink up with the press tripped, the rod 167 is hooked on the bracket 174, and no sheets are passing through the press; when the printing starts, the mechanism automatically acts to disengage the rod 167 on the first sheet printed, and then this automatic throw-off for the ink supply from the ductorroller 135 is ready for normal operation;

Means are also provided for raising and then retracting the inker carriage 45 and the mechanism for operating the distributing rolls and ductor roller which is best shown in Figs. 1 and 7: The carriage 45 is provided with two sets of rollers 175 and 176 (only one set being shown) that ride on the top surfaces of the cam-bars 177 (only one being shown) supported on the roller bearings 178 and 179 and having the inclined surfaces 180 and 181 to engage the carriage rollers 175 and 176 respectively. The under side of the cam-bars 177 have the racks 182 engaged by the rack-gear 183 journalled on the shaft 184, the gear 183 being driven by the gear 185 on the shaft 186 to which the crank-handle 187 is attached. When the cam-bars 177 are moved to the right (Figs. 1 and 7), the rollers 175 and 176 ride up on the inclined surfaces 180 and 181 to lift the inker carriage 45'to disengage the clutch members 57 and 59 and also the devices shown more particularly in Figs. 8 and 9, which carriage 45 is then retracted by the following mechanism to its Fig. 7 position: Fastened to opposite ends of the carriage 45 is the chain 188 passing around the idler sprocket 189 journalled in the side-frames and also around the drive sprocket 190 fast to the cross-shaft 191 journalled in the brackets 192 at the ends of the side-frames 10 and. 11. Secured to the shaft 191 is the crank-handle 193 which when turned anti-clockwise (Fig. 1) will pull the inker carriage 45 and its associated devices back to their Fig. 7 position from their operative Fig. 1' pcs1 10H. 1.

. The operation of-my improved inking mechanism. has been heretofore set forth when describing the structural details of the embodiment shown, and may be summarized'in part as follows When the press is in normal operation with the impression cylinder 12 raised and lowered by the cam 34 and the form-bed 13 recipro'cated in the usual'way by mechanism operatively connected with the gear 7 3, the cam 103 reciprocates the rack-bar 114 to variably vibrate the distributing rolls 88, 93 and 96 by the mechanism described and shown in detail in Figs. 2, 6, 8 and 9. On the other hand these distributing rolls as Well as the form inking rolls 83 are rotated through the mechanism driven from the form-bed 13 through the gears 76, 78, 79 and 86, while the ductor-roller 135 is oscillated by the mechanism connected with the main cam-shaft 35, but controlled from the throw-off of the 'press through the rod 167 and latch link 159. All of these actuating devices are releasably connected so'that the lifting and retraction of the inker carriage 45'(Fig. '7) willdisengage same but without changing the timing of the various parts and their actuating devices which are always maintained in proper relation to the press mechanisms irrespective of the movements of the oarriage45.

The differential control for the two cams 143 and 147 (Figs. 3, 4 and 5-) enables the operator, while the press is running, to variably control the length of contact of the ductor-roller 135 with the fountain roll 46 and also determine the point of contact on the latter in its cycleof rotation which is of advantage to secure an even and uniform ink film on the ductor to be transferred to the distributing roll's'88, 93 and 96 through the steel rollerlOl. I a

Changes and variations may be madein the construction shown and described as one embodiment of my invention without departing from the principles of the invention or sacrificing its chief advantages, and hence my improved inking mechanism is not to be confined to the construction shown in the accompanying drawings.

I claim as my invention:'

1. In a printing-press inking mechanism, a plurality of ink distributing rollers, means for vibrating. same relatively to each other from zero to maximum, and a single mechanism including a releasable connection therefor for causing the roller surfaces to move in different paths during their vibrations.

2. In a printing-press inking mechanism, a plurality of ink distributing rollers; meansfor vi- 4. In a prmong' press mechanism, ink distributing rollers, means for vibrating same including mechanism for causing the roller surfaces to move in different paths during theirvibrations, means for inaugurating the separate vibrations at different points in their several cycles of operation, and means for adjusting said vibrating means for strokes of different lengths from zero to maxi- 5.1mm inking mechanism for flat-bedprinting-presses, a reciprocating bed, ink distributing rollers, means actuated independently of the bed movements for vibrating said rollers alternately and in different paths relatively to each other and also to the bed, and means for inaugurating the separate vibrations of said rollers at different points in their several cycles of operation.

6. In an inking mechanism, a ductor-roller, means for oscillating same including a pair of relatively adjustable arms supporting one end of the roller for shifting the axial alinement of the ductor-roller in-said oscillating means. Y a

"I. In a printing-press inking mechanism, an oscillatory ductor-roller, means for tripping the press, and a'latch-link connected to said ductorroller and operated by a cam-actuated rod controiled lcy'said press tripping means for preventing'oscillaticns oi the ductor roller.

8. In a printing-press inking mechanism, an oscillatory ductor roller, means for tripping the press, a latch-link connected to said ductor-roller and operated by a cam-actuated rod controlled by said press tripping means for preventing osci1-. lations of the ductor-rolier, and manually operated means connected with said link for allowing movements of the ductor-roller when the press is tripped.

9. In a printing-press inking mechanism, an oscillatory ductor-roller, means for tripping the press, anda latch-link connected to said ductorroller and operated by a cam-actuated rod controlled by said press tripping means for preventing oscillations of the ductor roller, said link being unlocked when the press is moved to impressione 10. In a printing-press inking mechanism, press inking rolls, a rotary fountain roll, an oscillating ductor roll, ink distributing rollers, seprate means for rotating and vibrating same, horizontally-slidable cam-bars for lifting all of said rollsand rollers onsaid cam-barsexcept said press inking-rolls to an inoperative position without disturbing the timed relation of their respective actuating mechanismswith the press, and

means for retracting said lifted rolls and rollers 11 MICHAEL ANDREW DROITCOUR.

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