US1879597A - Multicolor printing press - Google Patents

Description

p v o. H. BANKER 1,879,597

MULTICOLOR PRINTING PRES S Filed July '7, 1927 5 Sheets-Sheet l YNVEN TOR.

lam-A Ffi h A TTORNE Y.

Sept. 27, 1932. o, N ER MULTICOLOR PRINTING mass Filed July "r; 1927 5 Sheets-Shea} 2 7 1 mm. \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\X I N VEN TOR. M 7 0% BY A TTORNEY.

Sept. 27, 1932- o. H. BANKER MULTICOLOR PRINTING PRESS s SheetS-Sheet 5 Filed July 7. 1927 W QIIIL EHW INVENTOR A TTORNEY Sept. 27, 1932. o. H. BANKER MULTICOLOR PRINTING PRESS 5 Sheets-Sheet 4 Filed July 7. 1927 INVENTOR. 44.41; 7%. 13M

. ATTORNEY.

p 27, 1932- o. H. BANKQER 1,879,597

MULTICOLOR PRINTING PRESS Filed July 7, 1927 5 Sheets-Sheet 5 INVENTOR.

ATTORNEY.

i 1 beds can Patented Sept. 27', 1932 OSCAR. H. BANKER, 0]

' m'rroonon rnnrrrxe Application and zul r, m7; Serial Io. i Y

()ne'of the primary objects of this invention is todevise a novel multi-color printing press wherein the type beds travel in a continuous ath, and wherein all of the type e provided with impression forms J so that all or any desired number of type beds 10 in the range m the character herein specified, a novel con- 11%; further comprehends novel -f.r

from the impression 'c linder, 'ment being such that t can be employed to carry impression forms so that any desired number 0 colors may be printed during the c cle of the machine withstructed. a

Another primary object of my invention is to devise novel transfer mechamsm for rapidly and efliciently transferrin the paper 0 arrangee sheets are aligned in a pile withtheir printed sides up.

Another primary 0 ject of my invention is to devise, in conjunction with a machine of mechastruction and arm ement of inking nism wherein "a continuous motion is imparted in the same direction-to the controllin ele- 'ments of the inking-mechanism, m nating the necessity, as has herebefore' been thuse deemed nery, of employing reciproca toIX or oscillatory movements. further object of my invention 18 to de vise novel means for providing variable v1- hrating strokes of the vibrating rolls, and for eilecting the adjustment of such variable "vibrations.

A further object of my invention is to devise a novel turnv over mechanism for the inking rolls, whereby, on a predetermined extent of revolution, they are automatically locked in position, and on a further predetermined revolution they are automatically unlocked, and novel means are provided. for causing l; the inking rolls to cooperate in timed relation with the impression forms to which the color they carry is adapted to be applied.

With the above and other objects in view as will hereinafter more clearly appear, my invention comprehends a novel multi color printing press. v

It further comprehends a novel multi-color printing press wherein the type beds can all carry impression forms and travel in a .con-

tinuous path so that during a single cycle the.

or w 'ch the machine is con- 'iiqrt ing mechanism.

proper color is applied to all of the impr'easionforms.

It further comprehends a novel, constmc tion and arrangement of inking mechanism wherein the inking rolls and then-controlling elements have imparted to them a continuous rotary motion.

It further comprehends a novelturn over mechanism for the mechanism where- 1 in novel means are provided for locking and w unlocking the inking rolls at the proper times.

It further comprehends a novel construction and arrangement of paper transfer mechanism which receives the printedsheets from the impression cylinder and. automati cally aligns them at a desired location with the printed side up.

It further comprehends novel for j preventing the blurring of printed sheets dur-.

the'time of transfer.

transferring the printed sheets and reversing "their position when delivered from the trans- .gE -Other novel features of construction andf'i advantage will hereinafter more clearly pended claims. 1 4 p I For the purpose of illustrating the invene tion, I have shown in drawings, a typical embodiment of it, which, in practice, will give, satisfactory and reliable results. It is however, to be understoodthat the various instrumentalities of which my invention, coneist can be variously arranged and organized, and my invention is not limited to the exact arran ement and organization of these instrumentafities, as herein set forth.

Figure 1 is a top plan view of a multicolor printing press embodying my invention. a Figure 2 is a section on line 2-2 of-Figure Figure 3 is a section on line 3-3 of Figure Figure 4 is a rear elevation of the machine or partly in section, the section being taken substantially on line 4-4 of Figure 1.

Figure 5 is an end view of a pair of inking or form rollers. r v I Figure 6 is a plan view of the construction 10o pear in the detailed description and thong; i 1" ,the accompanying a seen in Figure 5, but showing in addition the vibrating mechanism. Figure 7 is a plan view of portions of the vibrating mechanism.

, Figure 8 is a plan view of the turn over mechanism of one set of inking rollers.

Figure 9 is an end elevation of the construction seen in Figure 8. I

Figure is a plan view of the turn over mechanism of another set of inking rollers, and showing in addition a lifting cam and its 'coo era-ting mechanism.

igure 11 is a top plan view of a portion of the inking mechanism showingmore articularly and on a larger scale, the riving means for the inking rolls.

Figure 12 is a side elevation of the vibrating means for the inking rolls of set C.

Similar numerals of reference indicate corres onding parts.

ferring to the drawings 1 designates the frame of the machine, the construction and arrangement of which may vary widely inpractice. The base'portion of the machine is ordinarily a casting in order to give suflicient rigidity to the operation mechanism and eliminating as much as possible the vibrating to which machines of this character are subjected.

The frame is provided with inner and outer anti-friction supports 2 and 3 respectively which form tracks on which the type beds 4, travel. The type beds are linked together by means of a continuous chain 5, and this chain is of the roller type, having the rolls 6 which travel between spaced guides 7 which are arranged in such a manner that they form an elliptical path.

Each type bed 4 carries a longitudinally extending rack 8 having rack teeth on its bottom end adapted to be driven by a pinion 9, carried by a shaft 10, suitably journalled in the frame of the machine. The shaft 10 at its opposite end has fixed to it a gear 11, see Figure 3, which meshes with a driving pinion 12 carried by a shaft 13, suitably ournalled in the machine frame. The shaft 13 is provided with a sprocket 14 around which passes a silent chain 15 which also passes around a sprocket 16 on the shaft of a motor 17.

It will thus be seen that when the motor is running thedriving pinion 9 is continuousl ion of tile chain 5 imparting a travel to all of the type beds to cause-them to move in an elliptical path. a

The rack bars 8 are arranged in such a manner that as one rack bar moves out of engagement with the'fpinion 9 the next rack bar is at the same time beginning its engagement with it, so that an accurate and continuous unovement isimparted to all of: the

- t beds as they areall interconnected by t e chain 5.

In accordance with my present invention driven, thereby due to the provisit is not necessary to employ an idle type bed and all of the type beds can carry impression forms 18.

I have thus far described the construction for causing the travel of the ty beds.

19 desi ates the impression c 'nder which is carrie byashaft 20 journalled in the machine frame and provided with a gear 21 which meshes with, and is driven by the gear 11.

The impression cylinder is rovided with any desired or conventional orm of sheet grl ping mechanism 22.

s illustrated, the sheets to be printed are fed into the machine by hand one feeding table 23 and moved forwardly against an ad- 'ustable guide 24 which operates in the well nown and conventional manner, so that, at the proper time, when the gri pers 22 are in position to receive the sheet, ront guides 24 are automatically lifted out, and the ri pers, gripping the sheet 25, fix it relative y to the impresslon cylinder and carry it around with it.

At each revolution of the impression cylinder one color is ap lied to the sheet which 1t carries. During t e last impression, the gnppers 22 are released and the stripper ngers 26 are brought into action in the usual and conventional manner in order to cause the sheets to be stripped from the impression cylinder and transferred to grippers 27. The grippers 27 are in an open position to receive the sheet, the opening of the gripers being caused by a stationary cam 28.

he grippers close and grip the paper and start to carry the sheet with them, and the travel of the grippers is at the same peripheral speed as t at of the impression cylinder 19, this bein essential to prevent the bulging or stre hing of the sheets during the time of transfer, since the back end of this sheet is still being received on the impression form.

The gri pers 27 are carried by an endless chain30w ichtravels around sprocket wheels 31. The shaft 32 of one sprocket wheel 31, is provided with a gear 33 which meshes with an idler 31' which in turn meshes with the gear 21 thereby imparting a drive to the gripper carrying chain 30.

Continuing the description of the transfer mechanism, the end sprocket wheel 31 has mounted in proximity to it a curved gui do 34. After a sheet carrying gripper travels around the end sprocket 31, it is brought to the lower stretch of the chain so that the position of the grippers is now reversed, and the sheet carried by it is turned bottom side up, thus the printing side of the sheet is turned up. ..As the gripper carrying a sheet 25 comes into contact with a-stationary cam 35, such gripper is released and the sheet strikes the guide 36 and drops to the receiving table 37, so that the sheets pile one above the other loose 37. This table, as illustrated, is carried by a separate standard 39.

The table 37 in practice-can be lowered step by step as the sheets are piled up, by means of any conventional type of table controlled mechanism, and I have therefore deemed it unnecessary in the present =1nstance to describe in detail the construction and arrangement of such mechanism which is well known to anyone skilled in this art.

7 Thinking mechanism I In accordance with my present construction, I provide inking mechanism'whereby each impression form receives at the proper time its individual color. For the purpose of illustration only, I have shown the machine as adaptedto print five colors and I have therefore shown five impression forms with the necessary inking mechanism for such forms.

The shaft 13, shown in Figures 1 and 3, has fixed to it a pinion 40. The left hand portion of Figure 4, is shown in section, while the right hand portion is shown in slde elevation, and it will be understoodthat I employ two sets of drivin mechanisms for the inkin rolls, and sucii driving mechanisms are su stantially identical. y

The pinion 40 meshes with a gear 41, journalled on a stud 42 carried by the machine frame. This stud 42 meshes carried by a stud 44 on the The with a gear 43 machine frame. ear 43 meshes with a gear 45 which is y mounted on a shaft 46, journalled in the machine frame.

The car 45 meshes with a pinion 47 mounte on a stud 48 carried by an arm 49, which at its inner end is fixed to the shaft 46. The pinion 47 meshes with a pinion 50 which is fixed to a pinion 51 to revolve in unison therewith, and both of the pinions 56 and 51 are loosely mounted on a rock shaft 52 which is carried by the arm 49 and an arm 53, see Figure 6, said arm being fixed to the shaft 46.

The pinion 51 meshes with two pinions 54 which are mounted on the shafts, 55 which carry the vibrator rolls 56. These shafts 55 extend beyond the frame 57 and are journailed in it. This frame is of skeleton construction, as best seen in Figure 5.

The vibrator rolls 56 are in frictional engagement with inking rolls 58, the shafts of which are mounted on journals 59, carried by the frame 57, see more particularly Figure 5.

i gear 60 is connected with the gear 50 and 51 to revolve in unison therewith. The gear 60 is best seen in Figures 5 and 6. The gear 60 meshes witha gear 61 mounted on a shaft 62, which is journalled in the frame 57, in any desired manner. The shaft 62, carries at its other enda worm 63 which is in 'mesh' with the worm wheel 64, mounted on the shaft 65, journalled in the frame 57. A shaft 35 has a disc 66, which has a T shaped slot 67 which adjustably carries. a stud 68 which acts as a crank pin for the connecting rod 69, and which at its outer end is pivotally connected with a bracket 70.

The bracket 70 is mounted on a tube 71 II- which is loosely mounted on a shaft 52, journalled in the arms 53 and 49, and the frame 57. is also fixed tofthis shaft 52. p

The tube 71 has fixed to it at its outer end, a double fork. 73, the endii of which are received in the grooves 74 at one end of the vibrator rolls 56, so that during the reciprocation of the connecting rod 69, the vi rator rolls will have imparted to them a reciprocatory movement. The travel or length of stroke of the vibrator rolls can be adjusted by adjusting the position of the stud 68 in the slot 67, by means of a fastening device 75.

76 designates the ink fountains, which are of any desired or conventional,construction, and which are carried by an auxiliary frame 77 secured to the mainframe 1, see more particularly Figure 4. Each ink fountain is provided with a fountain roll 78, an intermediate composition roll 79, and a ductor roll 80, all of which are constructed and operated in the usual and well known manner.

Provision is made for bringing a" set of inking rolls 58 into the path of a predetermined impression form. This is accomplished in the following manner The shaft 46, see Figure 4, has what may be called a floating fulcrum and connected to it are the arms 49 and 53 and also an arm 81 which carries a roller 82, which is in the path of a cam 83 fixed to a'shaft 84. The arm 81 has fixed to it, one end of a spring 85, the opposite end of tionury' portion of the frame 77 so that the tendency of the spring is to retain this roller 82 in engagement witha cam 83.

The shaft 84 is driven from the pinion 40, as will now be explained, reference being directed to the right hand portion of Figure 4. v

The pinion 40 meshes with a gear 85 which is fixed to a'pinion 86, and this gear and pinion are mounted on a stud 87 carried bythe frame. The gear 86 meshes with a gear 88 fixed to a pinion 89, and the gear 88 and pinion 89 are mounted-on a stud shaft 90, carried by the machine frame.

The pinion 89 meshes with a pinion 91, journalled on a stud 92 and meshing with'a gear 93, loosely mounted on the shaft 46. The gear 93 meshes with a gear 94 fixed on the shaft 84, thereby causing the drive of the cam 83. v

The shaft 84 also carries a closedcam 95 into the groove of which fits the roller 96 which is fixed to a staof its construction and operationis unneces- Fhe arrangement of the ratchet mecha: nism is such that one cam efiects the feed .of both fountains, and during the opera tive stroke of a ratchet mechanism for one fountain, the ratchet mechanism for the other fountainis making its-inoperative stroke.

, The twviover mcchanimn for the inking rolls In my resent invention, I provided turnover mecdanismfor the inking rolls so'that the turnover is efiected by a continuous rotation of the controlling elements and thus i'eliminating the necessity of employing re ciprocating or oscillatin parts, and thus one is able to run the inking mechanism at a much higher speed. .I" also eliminated in chines of this character are subjected, due to the reciprocatory and oscillatory movements. I

' The turn-over mechanism is controlled and L. ed on a shaft 46, but is connected with the gear 93 to revolve in unisontherewith.

- The disc 103 drives a .disc 104, which is keyed to the rock shaft 52, and the frame 57 which carries all of the inking rolls is also I a keyed to this rock shaft 52.

he disc 103 is provided with three pairs of rollers 105, arranged in s aced relationship-around the periphery of t 'e driving disc In the present machine, the inking mechanismis s own in such a manner that one set is provided for two intermittent movements during one revolution of the disc 103. v During the rotation of the disc 103, th

lead roller of a pair of rollers 105 enters into i the slot 106, slot 106 .on the disc 10 i which is tangentially disposed on the center line of the rollers, and these slots are arranged in pairs and around the disc so that a. pair of rollers 105, the disc 104 has imparted to it one-third of a revolution, ex cept on the lastportion of the revolution. Two-thirds of a revolution is imparted to the disc 104 instead of a one-third revolution, due to the spacing of the pairs of rollers on the disc 103.

This partial revolution of the disc 104 causes adiflerent set of inking rolls to be =known manner, so that detailed description a large measure the vibration to which matimed by a disc 103 which is loosely mountare disposed 120 de center lines between the slots are 120 degrees :part, so that during the operative movement brought into operative position with respect to the next impression form which is to receive color.

I providenovel means for locking the inking mechanism in the position to which it has been adjustedso that during inking, a air of inking rolls. are positively locked in t eir inking position. For this purpose I rovided between each airof slots 106 a 10c 107, and, during the period in which a set of inking rolls are locked, these rolls 107 ride on the periphery of the disc 103, as shown v1n Figure 8. i

Between each pair of rollers 105, the disc 103 which carries them is rovided with a recess 'or pocket 108, and, uring the turnover movement of the inking mechanism, these rollers are received in one of said pockets as will be clearly understood by reference to Figure 10. I

The walls ot the slots 106 nearest to the center line ofithe two slots are provided with curved clearances for the rollers to' clear while going in and out of the slots. The disc 103 has cam portions 109 so that at the time g roll of finishing or starting of the turmover movement, and as heretofore explained, the

center walls of the slots bein curved for clearance, a space or gap 110 is left, as shown in Figu re 8. A roller 107 slides on the cam- 109 on the disc, thereby eliminating the lost motion which would have been caused by the gap 110 if the cams 109 were not present.

The roller-e107 are mounted in such mans" her that they can be adjusted to compensate for wear. In order to accomplish this without upsetting the accuracy of the machine or changing the relative position of the rollers from their location oi degrees apart, I

s apart. The arm 49 provide two holes lllgn the disc 104 which is provided with a sin is hole 112, and a pin 113 is provided, which is adapted to extend through the selected holes 111 and into the hole? 112, thereby positively locking the disc 104 with respect to the arm 49, then, while the disc 104 is in. a fixed position with respect to 19, the rollers 107 are radially adjusted.

For this purpose, the disc 104 is provided with radial slots 114 through which pass the studs 115, which are fixed in position by means of nuts 116, so that the position of the rollers 107 can be adjusted to compensate for any wear to which they have been subjected. In the type of machine herein shown, five impression forms are employed and it is therefore necessary to employ five fountains with their cooperating inking mechanisms, it being understood that for each impression form, an inkin mechanism is essential so that it will receive its color. The set of inking mechanisms for the last set of five impression forms, is located as herein shown, in proximity to the impression .0mm I r v '5 cylinder, as will be best seen from 1 hand, the sheets 25 are fed one at a time I and 3. v r f againstthe front guide orstop24. 'Asaum- The r 21 meshes with a gear 118 carried ing now that the motor. 17 is driving the main. by a s aft 119, journalled in the machine dr ving shaft 13, it will be a parent-from frame. -A- gear 120 is fixed to the gear 118 Figures 1 and 3thata drive wi beimparted 7o to revolve therewith, and this gear meshes to the shaft and through the gears 11 and with an idler 121, suitably journalled and 21 to theim ression cylinder 19. The grip-- 4 meshing with a '122, fastened at the end pers act in e well known and conventional of the vibrat r m 123. manner to grip the sheet which has been fed The vibrator 124 carried by the vibrator to the impression c linder, so that the fed 7 shaft, is in frictional engagement Withtho sheet will carrie around the impression inking rolls 125, which are journalled in oscilcyhnder during therevolution of the latter. latory arms 126. The shaft 119 has. fixed to The type beds 4, which carry the'impression it, one end 1clwfahan arm 127, which carries a former;i igflhave a confiinuous movemlelnt im- 3g roller 128,'w i isin'engagement wi acam pa em,sincet egear9-' ata tim 49 129, fixed to the shaft 84. v meshing with a rack 8 secured o the botto:

130 designatesan ink fountain. 131 is the. f a bed, the arrangement being such fountain roll. 132 is a ductor roll. The that w on the rack of one type bed moves out means for producing the proper movement of of engagement with the driving pinion 9 the so the vibrator r0111! bestseen in Figures 1 and ra k 8 f next yp bed wi l ome into as enga ment-with such driving pinion 9. The

The shaft 84 is provided with a cam 133 type s are all connectedto ether by means having a cam ve with which a roller 134 ofa link connection, as herein fore described cooperates, said roller bein carried by a so that all of the type beds move at the same as k am 135 t d on E 136,o 1-ri d time and have a continuous movement im- 00 by the machine frame. This rock arm 135 parted tothem. 4 i at its upper end, is provided with a fork, to In the present construction, I have shown en ge an annular groove 137 on the vibrator three sets ofinking mechanism A, -B, and G re so that as the arm 135 is rocked the respectively. The sets A and hbeing each so vibrator roll will be reciprocated. provided with two pairs of inking rollers as The sheet delive mechanism is provided Whil the et C is provided with a single pair 7 i with a air of chains 138, see Figures 1 and of inking rollers. 2, whic pass around sprocketwheels 139 on As n1 1 F lgure 4, set A of the inking the shaft 32. These chains 138 also pass mechanism has a pair of inking rollsin inkaround splrocket wheels on the shaft 140, ing position, while theinkin vrolls of set B which is t e shaft which carries the sprocket have both pairs of inking. ro ls out of their wheels 31 at the delivery end of the machine. inking position. v I I Each chain 138 are block chains in con- As theshaft 13'is bein continuousl drivstruction, and, on the blocks, are provided n, the pinion 40,carried yit,drivest e r f to with upwardly extending needle points 141. 11 well as he g ar 41- The gear 41 drivesi The purpose of these needle points is to suphe g'gar 43 which is a counter pair of the gear a i port a sheet being delivered with the printed 85, th being alike in size construction of side down, sothat the printed side will be supheir teeth. v- 1 ported on the needle points instead of on Thegear43 drivesthe gear 45, which is i the chain, and there will be no possibilty of loosely mounted on the shaft 46 and drives the blurring the printing on the paper. 1 ear 4:7,)Vh10h in turn drives the gear 50.

The speed f the needle chains having th he gears '50 and 51 are connected to rotate needle points, is exactly the same as the In 111115011, and the gear 51 meshes with two chains carrying the grippers, thereby causgears 54. The gears 54 are uttachedto the I 5@ them to travel as a unit and the needle 811(15 0f the vibrator shafts 55 carry the pgints come in ontact the printed sheet vibrator Polls 56. These vibrator IOllS 56 are at one point will constantly remain at'that in frictional engagement with the'inking rolls I one ti l i t with t lli or p 58, so that each pair of inking rolls 58 is being v scratching. This construction is more' clearly driven at the same peripheral as that of th fib i Fi 1 nd 2, g i type bed which 18 assing beneath themf The operation of in novel multi-color, Each set A d o he inking mechanismi ti press ill nowie apparent t th has the same dr ving means for the inkin skilled in this art and is as follows rollers, and in Figure 4 at the left hand side I The sheets to be printed are fed into the ,of the figure, Ihave shown the drivin means l machine in any desired manner, and for the for the inkin rolls, while at the rig t hand I sake of simplicity, I have shown a machine side of this igure 4, I have shown only the adapted to be fed b hand, although as is apdriving means for the turn-over mechanism. parent, any des' type of feeding mecha- In the construction illustrated, the arrangenisni can be attached to the machine. ment is such that the first impression form Assuming now that the sheets are fed by receives its color from a pairof inking rolls of the set A. The second impression form receives its vcolor from a pair of inking rolls of set B. The third impression form receives its color from a pair of inking rolls of set A. The fourth im ression form receives its color from a pair 0 inking rolls of set B, and the fifth impression form receives its color from the pair of inking rolls of set C.

In other words, each impression form has its own set of inking rolls and at a selected time receives its proper color.

Operation of inking rolls While a pair of inkin rolls of set A, for example, is applyin inl to one impression form, see Figure 4, t e cam 83of set B rocks the arm 81 to raise the frame 57 "and a pair of inking rolls 58 out of its operative position, and, at this time, the turn-over mechanism for set B is operated to bring its other pair of rollers into position for the next inking operation of set B.

The operation of the turnover mechanism The disc 103 is continuously revolving in the same direction, see Figure 4, and the parts are so timed that one revolution of a disc 103 represents one cycle of the machine. Referring now also to Figures 8, 9, and 10, in Figure 8, the parts are shown in position to begin the turn-over operation, and the duration of the inking period and of the turn-over period are indicated on this figure.

A roller 105 is entering a slot 106 in the disc 104, causing it to revolve. These slots 106 are not radially disposed. A pair of slots 106 and a pair of rollers are employed, as best seen in Figure 10, in which figure a pair of rollers 105 are engaged in the slots 106. The main object in using this arrangement is to provide a gradual start and stop of the disc 104 which carries with it the heavy sets of inking rolls, thereby eliminating shocks and jars, and enables the machine to run at a higher speed.

Locking means fordisc 10!;

The disc 104 which carries the inking rolls and determines their inking position is provided with a positive locking device which locks the inking rolls in a positive stationary position which eliminates any possibility of roller marks on the impression forms, as will be clear to those skilled in this art. A disc 104 carries three radially disposed rollers spaced 120 degrees apart. The disc 103 turns the disc 104 one-third of a revolution, and the next stop two-thirds of a revolution, and therefore the locking rollers 107 are in positions to which it has been moved. Two of the rollers 107 travel on the periphery of the disc 103 during the inking period, thus locking in position the operative pair of inking rolls.

Unlocking operation of disc 104 During the revolution of a disc 104, a pocket 108 on the disc 103 is brought into the path of a roller 107 which enters said pocket, 1 see Figure 10. The pockets 108 provide clearance for the rollers 107 when the disc 104 is unlocked.

The sets A and B have two sets of inking rolls set in position 120 degrees apart, see

Operation of set 0' of inking rolls The inking rolls 125, see Figure 3, are frictionally driven as hereinbefore explained in detail. At the proper time, the cam 129 rocks the rock arm 127, bringing the inking rolls 125 into operative position and also raises the rolls at the proper time and retains them for the desired period in their inoperative position.

Operation of delivering the printed sheets When the grippers 22 of the impression cylinder 19 contact with the gripper releasing member in the usual and conventional manner, which it is not necessary to show or describe, the front end of a sheet is released from the impression cylinders, and the stripper 26 strips the sheet from the cylinder and transfers it to the delivery grippers 27 which are moved into their sheet receiving position by the cam 28, see Figure 3.

The gripper fingersare carried by the chain 30 which is continuously driven, as before explained. As seen in Figures 1 and 2, the conveyor proper, consisting of the chains 30, has disposed within it the chains 138 which are driven at the same speed and rovided with the needle points 141. Each oi the chains 30 has a gripper. The needle points prevent the printed face of a sheet contacting with the chains or the conveyor shafts, and also provides a proper support for a sheet as it passes around the loop at the end, see Figure 1. The grippers 27 are released by the cam 35, and the sheet drops printed side up on the receiving table 37. .T his table may be automatically lowered step by step in the usual and conventional manner.

The impression cylinder makes four revolutions and during the fifth or last revolution, the printed sheet is delivered. The sheet is delivered during the fifth revolution of the im ression cylinder so that it is not necessary to ave an idle type bed or a dwell between type beds, thereby materially increasing the output or capacity of the machine, without increasing the length of the cycle.

Having thus described my invention what JL.

lid

I claim as new and desire to secure by Letters Patent, is

1. In a multi-color printing press, a plurality of type beds, links connecting said beds, racks on said type beds, means engaging said racks to cause said type beds to travel in a continuous path in a laterally extending plane, an impression form carried by each type bed and movable in a sin le horizontal plane, an impression cylinder eneath which said impression forms travel, means to impart to said impression cylinder the same number of revolutions as the number of type beds employed, and the same number of revolutions as the number of impressions which are to begnade.

2. In a Inulti-color printing press "a plu rality of type beds, links interconnecting said type beds, rackscon-said type bedsi a drlving.

pinion successively "engaging sai racks to cause a continuous and simultaneous travel to all of said type beds, each having its own impression form, a pair of inking rolls for each dividual type bed, means to actuate said sets in timed relationship to cause each type bed to receive only its selected color, an im ression cylinder and means to revolve sai cylinder during a cycle of travel of said type beds the. same number of times as there are type beds employed.

OSCAR H. BANKER.

type bed, means to cause a pair of inkin rolls to cooperate at a predetermined time with its individual type bed to apply an individual color thereto, an impression cylinder beneath which said type beds travel, and means to revolve said impression cylinder during a single cycle of said type beds the same number of times as there are type beds. h

3. In a multi-color printing press, a plurality of type beds, each having its own impression form, a pair of inking rolls for each type tit":

iiti

bed, means to cause a pair of inking rolls to cooperate at a predetermined time with its individual type bed to apply an individual color thereto, an impression cylinder beneath which said type .beds travel, means to revolve said impression cylinder during a single cycle of said type beds the same number of times as there are type beds, and means to remove a printed sheet from said impression cylinder during the printing of the last color.

4. In a multi-color printing press, a plurality of connected type beds each having its impression form, racks on said type beds, a single means always in engagement with one or more of said racks to revolve said type beds in a continuous path, an impression cylinder, individual inking mechanism for each type bed, actuating means for said inking mechanism, and means to revolve said impression cylinder during a revolution of said type beds the same number of times as there are type beds to produce impressions corresponding in numbers to the number of type beds.

5. In a multi-color printing press, a plurality of type beds connected to move in unison each of said type beds carrying its impression form, racks on said type beds, a single means always in engagement with one or more of said racks to impart a continuous travel to said type beds in the same direction, a plurality of sets of inking mechanisms, each having a pair of inking rolls to cooperate with an in-

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