US857331A - Printing-press. - Google Patents

Description

PATENTED JUNE 18, 1907.

G. R. G'ORNWALL. PRINTING PRESS. APPLICATION FILED DEO. 21,1904.

` 4SHEETS-SEEET 2.

N0.857,3131.` PATBNTED JUNE 18, 1907.

' -G. R. GORNWALL.

PRINTING PRESS. APPLIGATIOK FILED DEO.21,1904

PATENTED JUNE 18. 1907.

4 SHEETS-SHEET 4.

of. these in a double impression; to provide for giving a yielding or a nonyielding im-v UNITED srA'rEs rA'iEin"A oEEioE.

GEORGER. ooRNWALL, oF EYEQNEW Yonnff l PRINTING-PRESS.

To @ZZ whom t may concern:

Be itv known that I, GEORGE R. ConNwALL, a citizen of the United States, residing 'at Rye, in the county of Westchester and State vof New York, have invented a new and useful Printing-Press, of which the following is as'peciiication.

llie invention' relates to printing presses and more particularly to planograpliic-rotary riiiting presses, although in certainof itsA eaturcs the invention is applicable to rotary presses generally. .l

Objects of the invention are to provide a printing press of simple, reliable and coinpact structure t', provide a press adapted to do excellent work on impression-receiving surfaces of various kinds; to provide for perfecting a sheet or for printing it on one side only to provide for giving an offset impression or a direct impression, or a combination pression, or a -partly yielding impression or squeeze during the im ression contact as may be desired; to provi e. for adequate and efiicient inking of tlieprinting surfaces; to provide a simple and effective control of the inking mechanism; to rovide a single inking system and a singe printing couple to perfect a sheet; to provide for feeding sheets ,to the press in such manner as to secure -the 'product desired. These and-other objects of invention will in part be obvious and will in part more fully appear hereinafter.

The invention consists inthe novel parts, improvements and -combinations herein shown and described. Y The accompanying drawings, referred'toherein and forming a Vation of the press.

part hereof, illustrate one embodiment of the invention, the same serving in connection with the description herein, to explain the principles of the invention.

, Of the drawings: Figure 1 'is aside-elevation of a printing press constructed in accordance witliccrtain features of the invention. Fig. 2 is a longitudinal section inele- Fig. 3 -is a detailed view, partly iii section, of the gripper controlling mechanism. Fig. 4 is a detailed view ofA another partof the gripper'controlling mechanism shown 4in two positions. -'Fig. 5 is a .detailed elevation showingt-he controlling mechanism for the inking rolls. Figs. 6 to 9 are diagrammatic views Ashowing the printing cylinders 'in different'positions. Fig. 10

shows in detail one form of the gripper c on- Specification of Letters Patent. .it'piic'aiion nea December 21,1904. semi No. 237,833.

' onl Finiteiii-:eill J une 18, 1907.

trolling mechanism indifferent positions. Fig. 11 shows a'inodiied form ofthe gripperv controlling mechanism in different positions. Figs. 12 to 15 show difierentpositions of the grippers during different parts in the'revolu-- tion of the gri per carrying cylinder. Fig.

in the gripper -controlling mechanism.

The invention contemplates, as hereinbefore indicated, the providing of a press which :16 is a detail lo one arrangement of the cams I' is of simple and-compact structure, as welll-as possessing other advantages, and in the embodiment illustrated herein vby way of exam-A ple, apress having a .single printing -couple and a single lhiking system is shown which is .adapted to perfect or tosprint one side which is adapted to give a direct impression upon one side of the sheet, or to give an olfof the impression-receiving materiaL' i set impression upon one side of the sheet, or

to give a direct impression on one side and an offset impression `u on the other side siinultaneously, tb'us per ecting the sheet. l

According to vcertain features ofthe invention it is contemplated to provide means' which may be set to automatically cause the vvthat it may rotate therewith, the ornicarrying cylinder 3; said shaft 2 may receive power from any suitable source. Mounted (proper relation 'with the cylinder 3 is a cylin er 4 which is caused by suitable means to perform its un'it rotations in a given ratio to the unit rotations of the cylinder '3. This may be efl'e'cte'dv by a spur gearing S-(sucii as is shown in the drawings.

Mounted 'u on the forni'cyli'nder 3 are plate I y l'holding or p ate clamping devices of any suitable and approved. structure and of such number as may be best suited for'tlie ar-V IOO perform. The surfaces or plates carried on the `c 'ylindermay consist entirely of printing surfaces, when desired, and for certain purposes they may consist of printing surfaces and impression surfaces. So far. ascertain IIO i features of the invention are concerned, any

suitable form of inking mechanism may be ern loyed. In accordance with one feature of t 1e invention, however, and as illustrated, it is desirable and convenient lto provide upon the surface of the said cylinder 3, printing vsurfaces and ink distributing surfaces, or ink slabs in alternate relation, and in the diagrammatic showings of Figs. 7 to 9 a form cylinder 3 .is illustrated having two printing surfaces 7 and two ink distributing surfaces or ink slabs 8 in alternate relation.` As the printing surfaces are removably attached,.

plates or impression surfaces of a yielding or non-yieldingcharacter may be used as de- -sired at any time 4and for any particular purose. p In the embodiment illustrated the printing surfaces 7 are of a planographic character and the ink distributing surfaces are shown equally radially distant therewith from the axis of the form cylinder 3. It is necessary with this arrangement that means be provided whereby the surface cf the impression or offset cylinder 4 shall be kept out of contac't with the ink slabs 8. y A means of leffecting this is shown in Figs. 5 to 8 wherein a portion o fthe periphery of the cylinder 4 is de'- pressed or cut away. It is found convenient to have the cylinder-4 perform as many unit revolutions for each unit revolution of the form cylinder 3 as there are plates or printing surfaces 7 upon the said cylinder 3.` By

, properly timing the parts the surfaces of the tions shown by the arrows in said figure.

two cylinders Vwill come into the position shown'in Fig. 6 while rotating in the direc- It will be seen therefrom thatthe high portion of the surface of the cylinder 4 will come in contact with the surface of the plate 7, but that when the' ink slab 8 has rotated to a position nearer the cylinder 4 that the depressed.

y part of said cylinder 4 has come into `position over against the ink slab, as in Fig. 7, thereby preventing contact between' the ink slab and the surface of the cylinder 4. Figs. 8 and 9 show a duplication of these movements with respect to the remaining printingl surface and ink slab illustrated therein.

The high portion of the cylinder 4 is provided with plate holding or clampingmeans and upon said high portion there is clamped a blanket or plate 9 adapted to receive an impression of a design or printed matter which it is then capable of yielding up, or impressing .upon a sheet which may pass through the printing couple.

It will be seen from Fig. that if the surfaces 9. and 7 come in contact as shown with a sheet inter osed, the design or characters upon the sur ace 7 would be impressed upon the sheet, the member 9 serving only to make the impression. In caso the plate-7 were of metal and the surface 9 were a yielding surface the impression would be that of a yielding impression member and a nonyielding form member. In case no sheet were interposed between the surfaces 7 and 9 asshown in Fig. 6 a design carried in reverse on the surface 7 would be transferred or offset'in normal position upon the surface 9 and after a complete rotation of the cylinder 4 and a half rotation of the cylinder 3 the surface 9 would-come in contact with the second surface 7 carried by the form cylinder 3. If a sheet were interposed between the said surfaces at this time said sheet would receive an imprint of the design from the the surface 7 were of a yielding na-A and carried a design the sheet would receive a 'perfecting impression between a yielding and a non-yielding member, one side of the sheetreceiving an offset imprint. The Vari'ations inthe nature of the impression are of greatA value'when sheets having surfaces of different characters as regards roughness, hardness, ink-receiving qualities, etc., are -fed through the press. It will be also noted that the two cylinders are each adapted to act as form or impression cylinders or as both form and impression cylinders, and to yield either direct or offset imprints orboth.

Onearrangement of the various surfaces upon the cylindersA and 4 which is of great usefulness comprises having anoffset surface upon the cylinder 4 and planographic rintin plates carried upon the cylinder 3. gVith t e illustrated embodiment and referring especially to Figs. 6 to 9 inclusive and -With the arrangement indicated, 9 wouldbe an offset surface and each of the surfaces 7 would be a planographic printing plate. With this arrangement and with a sheet fed to every revolution of the cylinder. 4 a direct impression from the printing plate 7 upon one side of the sheet would be obtained; if a sheet were fed at every other-revolution ofthe cylinder 4 the surface 9would take an offset impression from one of the plates 7 and then IOO co-act with the other plate 7 to perfect the sheet with an offset impression upon one side and a direct impression from the printing platel upon the other'side; .if no. design were s carried upon one of the plates'7 the sheet could be fed so that an offset impression would be taken from the other plate 7 upon the surface 9 andv then an offset impression to certain features of the inveiition they may be of any desired form, but according to other .ingas an impression surface only.

ii'pon one side given to the sheetA bythe said surface 9, the plate 7' carrying no design actsqueeze,.y whether yielding or unyielding,

-or a" combination of both, may be secured through quite a Wide range.

Inking devices'are pro vided, and according features of. the invention,- inking devices are provided adapted to give `a very extensive grinding and distribution of the lnk, such as is necessary in producing high .quality work. According tooth'er'features of the invention it is also contemplated to provide means for `controlling and varying the action of the inking mechanism so that the supply of ink to a particular printing plate'may be exactly regulated, or the supply for one printing. plate may be varied from that foranother" Ifn the illustrated 'emb-odie printing plate. ment of1inking mechanism both of the said features are realizedv and in the said form 10 indicates an inkl fountain, 11 a ductor. roll, 12

an ink distributingroll, which maybe of anyA with the parts just described, constitute an' effective inking system forgiving very thorough grinding and distribution of the ink and for applyingit evenly to the priiitin platesl' For mechamsm o any suitable and convenient form may be used and such a mechanism is indicated by thereference numeral 14.

It is frequently desirable when one of the plates or surfaces upon the cylinder 3 is used for giving an indirect or o'fset'impressio'n to the surface 9 of the cylinder 4, to give such plate a heavier inki'ng than is required for another .plate upon the cylinder 3 which may be used for direct printing, or vice versa.

' when a second surface upon the cylinder 3 is used merely as an impressionv surface to coact with the surface 9 as a printing surface 1t is necessary that such impression surface iecei've no ink. `For4 this utrpose mechanism is provided which is a( apted -to'vary the amount of ink received by the different printiiigsurfaces upon the cylinder '3 or to cause any of the surfaces on said cylinder to' receive no ink as may be required by the vparticular work to he performed. ln the drawings an embodiment of such a controlling the inking mechanism. is shown. f y

15 indicates a cam member which is' radially adjustable upon the form cylinder, and

Awhen desired such a member may be provided contiguous toeacli part ofthe surface of the cylinder where it is desired either to `be mounted upon the shaft 2.

Also'.

vary or 'cut off the ink supply. Coacting with the-member 15 is a plate 16 which may This plate is slotted radially as at 17 and in said slots are niounted-sliding blocks 18 which are springimpellcd inwardly .with respect to the cylin-l der ".3, each carrying suitable friction. rolls, their inward movement being limited by a pin' and lug 19. Mounted on the press strueture is a hand-lever 2() connected With a rockshaft 2l and connecti r by means of arm 22 and link 23 with the p ate 16 so that moveme'nt'of the hand-lever 20 communicates a corresponding movement to the plate16. .Y

The hand-lever is provided with a spring pin 'which coacts with holes 24 in the press frame to retain it in'any desired adjusted position.

The plate 16 may be moved into any desired position with res ect to the inking rolls 13 and the radial sli( ing blocks 1H may be positione'd beneath the pintles or shafts of one-or more vof the inking rolls respectively., The. blocks 18 bein normally held in theiiiinnermost `position )y the spring andby thlug and pin construction 19 are not in contact with,'although beneath, the shafts of the ink-. ing rolls. During 4the rotation of the cylin# der 3 as the cam 1.5 comes in contact with the blocks 18 they ride upon the sloping portion of the cam and are pushed outwardly, there- 9 by Acoming iiicontact with the shafts of the vided for determining at what portion o the plano I'raphic printingv a i amping- .means are further provided r whereby the IOO amount of such variationshall be determined,

the location and amount of the variation being dependent upon the relative positions of the coacting members. These members may be so positioned as to tli-row off the inking mechanism from'- entire portions ofthe printing surface or they 'may be thrown out of action so that the ink will be uniform over the entire'printing surface or surfaces.

It willbe understood also that the mechanism just described is a single inking system which is adapted to provide ink for two members of a single rintiiig couple which ini rints simultaneous y 'both sides of.a sheet. o far as certain features of the invention are concerned, any suitable form of sheet handling mechanism may be employed. vIn accordance with other features ofthe invention, it is Ycontemplated to provide sheethandling mechanism which may be automat- IIO.

ically set to (zo-operate with the other parts of the y press so' as to control and vary the'nature o the impression so that the printing couple may be caused to give an impression the offset surface to the sheet, or to give a perfecting impression to the sheet, one side thereof being printed directly from the printing plate and the other side being printed from the offset surface. A form of sheethandling mechanism embodying the said features is accordingly shown herein, said form comprising a suitable gripper mechanism in connection with cylinder 4. Mounted upon said cylinder is shown a gripper 25' fixed on a gripper shaft 26. At the end of said shaft is a tumbler block 27 which, by means of a spring-pressed rod 23, remains in either of two positions into which it may be thrown, in one of which said positions the grippers are open and in the other closed (see Figs. 4,

12-15). Suitable controlling and actuating mechanism for these grippers rovided and such mechanism is convenient y connected,

with and controlled and actuated from the shaft 2. Upon the shaft 2, accordingly, is fixed a cam 29 so shaped as to providefor the proper periodic actuation of the gripper mechanism. In the present instance the cam is shown so shaped as to actuate the gripper mechanism once for every revolution of the form cylinder which as heretofore explained occurs during every two revolutions of the impression or off set cylinder.

Mounted on the frame of the ress is a bracket member 30, .within whic is journaled a shaft 31 carrying arms 32, 33 in the ends of which are mounted pins 34, 35 which work in holesin the press frame and are adapted in one position to enter the'cam groove 36 in the tumbler blockl 27. The

shaft is impelled by the spring 37 to rotate in `a direction .so as to keep the pins 34, l35 pressed inward and protruding into the path of the said cam groove 36. Splined upon the shaft 31, is an arm 38 having a friction wheel 39 at its end adapted to ride upon the face of the cam- 29. ,lt will thus be seen that when the friction wheel-39 is in contact with the proud part of the cam disk 29 the shaft 31 will be rotated againstits spring and the ins 34 and 35 will be withdrawn from the patlfi of the cam groove 36' of the tumbler block 27.;

The arm 39 is provided with a set screw 4() so that the arm may be moved backward into position where it will cease to coact with the cam 29. The spring 37 in such case would keep the pins in their inward or protruding position.

Anysuitable means for feeding sheets of material to the press may be provided such as the hand feed board 41. The pin' 34 is in such position that by .coacting with tumbler block 27 it will cause the gripper to close upon `a suitably fed sheet. The sheet will then be carried through the printing couple, and the pin 35 coacting with the tumbler block 27 at the proper time will act toppen the gripper to release the sheet. Stripper mechanism 42 and delivery mechanism 43 of any suitable and approved form may be provided to take the sheets.. will be seen that in the present embodiment tha cam 29 actuates the arm 33 and withdraj-Ws the pins once for every revolution of the cylinder 3 or once for every two revolutions of the cylinder 4 so that the grippers will take a sheet for every second revolution of the impression or offset cylinder 4. This is desirable whenever offset printingis desired or whenever a sheet is to be perfected.

If it is desired to have the grippers take a sheet at every revolution of cylinder 4 it is 'only necessary to slide the' arm 38 back into an inoperative position with regard to the cam 29' which may be done by the means heretofore described and pointed out. It

will also be understood that the sheet-han-l dling mechanism described will likewise constitute a form of means for automatically giving a yielding or non-yielding impression as may be desired in different cases, as herein previously set forth, it being understood that the various surfaces upon the cylinders constituting a rinting couple will in such case be arrangetfhnharmonywith the adjustment or setting of the sheet-handling mechanism.

In Figs. 3 and 11 is shown a modification' of the gripper mechanism which is particuiarly adapted for lhigh speed. work and wherein each pin iswithdrawn independently of the other, and being so withdrawn it has obviously a longer time in which to ass through its cycle of movements. In this orm a sleeve 44 is shown journaled in a bracket 30a said sleeve being rigidly connected with an arm Fronr an inspection of Fig. 10 it l IOL 32a which is spring-pressed by a spring ,37a

so as to keep its pin 34a in the inwardly protruding position. This sleeve 44 has connected therewith an arm 33a which is positioned to coact with a cam 293L fixed upon the shaft 2. Journaled within said sleeve 44 is a shaft 31a which has fixed theretoan arm 33a in which is mounted a pin 35?L which is spring-pressed by, a spring 37 b into its inwardl `protruding position. At the other 1 end o said shaft 31V is fixed an arm 38b iosiv Each o said IIO It will be seen from the foregoing that the i sheet taking mechanism may be set to take a sheet' at every revolution of. the impression or offset cylinder or at every second revolution thereofand that thereby the functions performed by the cylinders and 4 are materially changed and modified and the nature of vthe product of the press both as to the char- -When the cylinder 4 is used as an offset cylinder it may be desirable to'clean the sur- -face thereof after' each printing impression is inade and before the design is again transferred to theoiset printing surfacefrom the ycylinder 3. A means for effecting this is shown, consisting of areversely rotating wiping or cleaning roll 45 which is pivoted upon a shaft 51a so'as to periodically move alternately into contact with the surface yof the cylinder-'4 and into contact Witha fountain `roller 46' which dips intoA a suitable cleaning solution. A n idlel pinion 51 communicates rotary motion to the roll 45'from thecylinder A4. The roll 45 is actuated by a suitable zo 'connection such as the link 48 connecting an arm of the bell-crankleverupon which the roll '45 is -inounted-with a -lever 49 .Which is .acted upon by an adjustable cam 50 Which may be carried upon a VShaft 2 to rotate therewith. An adjustmentv 53- is shown in' the link 48 for the 1purpose bf adjusting the res-v sure with Whic the roll contacts Wit Vthe vsurface of thecylinder 4. For the purpose..

of drying thoroughly the surface 9 of the cylinder 4 an air-blast is shbwn at, 52. When; the wiping or cleaning action ot the roll 45 is not desired' itanay be thrown out of action by means of the connection 53 or by slipping the cam or by any other desired means.

From all the foregoing it will. be seen that,V 'among other advantages, a press has been provided Which, While' 'of great sim licity as .regards structure, possesses great eXibllity as to the functions'performed by the various members and aWide and'varied range ofusefulness las to the materials upon Which-it is adapted to act and as to the nature and characte'r of the .impression .and product. The constructionillustrated byreason of its sim- 45 plicity conduces to low cost of manufacture, strength" and durability of parts, ease and convenience of'control'and accessibility 4of yall .parts for adjustment and cleaning. The

operation of the p'ress and the manner of con- 50 trolling'the various parts so asto securev desired changes in the manner of operating and in the product of the press will be apparent' from the foregoing'descri tion. Themventlon', in its roader aspects, 1s

. 55 not limited to the particularconstructionsshown., nor to.y any particular constructions by which it has` been or may be carried into effect, as many-changes may be made in the construction? Without departing. from the 6o main principles bfthe'invention and Without sacrificing its'chief advantages. A What I claim as my invention, and desire to secure by Letters Patent, is:.

't1'. 'A .printing pressjincluding in combination a cylindercarrying ajprinting plate, a

lmeans for the' plate-carrying cylinder,

cylinder carrying an offset surface, said cylinders constituting a printing couple, inkingv means for the plate-carrying cylinder, and, automatic means constructed and arranged for causing the printing couple to give an impression direct from the printing plate upon a sheet, or to givejan impression from the printing plate -upon the oifset surface and then from the offset surface to the sheet.

2. A printing/press including in combina- 7x5 tion a cylinder carrying a printing plate, a.,

cylindercarrying an offset surface, said cylinders constitutinga printing couple, inking means for the plate-carrying cylinder, and automatic meansv for causing said couple to perfect a' sheet at one yim ression,"one side of the sheet being'printe directly from the printing plate and the other side being printed from the said'printing plate by means Y of the 'offset surface.

3. A printing press including in combination a cylindercarrying a printing plate, a cylinder carrying an offset surface, said cylindersconstitutin'g a printing couple,inking means for the plate-carrying cyllnder," and means constructed and arranged-'to cause the printing couple to print a sheet on both'sides at one impression, one side being rinted d i-' rectly from'the printing plate an the other from theotfsetsurface, or toprint either a direct impressionfrom the rinting plate, or an offset impression from t e bisetsurface, on one side o f the sheet only.

4. A printing press including in combna- Ation a cylinder carrying a printing plate, a 10 cylinder carrying an oiisetsurface,'said cyl` inders constituting a printing couple, inkin meansvfor the plate-carrying cyh'nder, an

vsheet-handling means adapted to beset to take sheets at such time and in such manner v10'5 as to cause the printing couple to give an impression direct from the printing-plate'upon a'sheet,- or to give an impression from the printing plate .upon the offset surface .and then to the sheet, as desired.

5. A printing press including in combination a cylinder-carryirlg a printing plate, a cylindercarryingan o set surface, said cylinders constituting a printing couple, inkin an V1 15 sheet-handling lmeans adapted to be set to take sheets atsuch time andv in such manner as to cause the printing couple to perfect a sheet at one impression, one side of the sheet being printed dlrectly and the other by offset. izo 6`. A printing press including in combination a cylinder carrying a printing plate, a cylinder carrying an onset surface, said cylindersconstituting a 'printing couple, inking means for the plate-carrying cylinder, and 1'25 sheet-handling means adapted to be Set'to sheet' on bothsi es at .one unpression, one

side-being printed directlyfro'm the printing 13o plate `and the other from the offset surface,

cause the printing couple to give an impression y direct from the printing plate upon a sheet, or to give an impression from the printing Vplate upon the offset surface and thence to the sheet, as desired.

8. A printing press including in combinatio'n a cylinder carrying a printing plate, a

cylinder carrying an offset surface, said cyliiiders constituting a printing couple, inking means for the plate-carrying cylinder, and means which may he set to automatically cause the printing couple to perfect a sheet at one impression, one side of the sheet being printed directly from the printing plate and the other by offset.

9. A printing press including in combination a cylinder carrying a printing plate', a cylinder carrying an offset surface, said cylinders constituting a printing couple, inliing means for the plate-carrying cylinder, and means which may be set toautomatically cause the printing couple to print a sheet on both sides at 'one impression, one side being printed directly fi'oni the printing plate and the other by offset from the offset surface, or to print either a direct impression from the plate or an impression from the offset surface on one side only of the sheet, as desired.

10. A printing press including in combination a printing couple, means carried by the members of said couple for detachably holding printing or impression surfaces, and

means for causing said couple to present to an interposed sheet a yielding impression surface to c'o-act with an unyielding printing surface, or an unyielding impression surface to co-act With a yielding printing surface, or a yielding impression surface to cio-act with a yielding printing surface.

11. A printing press includingin combination a rotary member adapted to carrysurfaces of a yielding and surfaces of a non- Ayielding nature, and a second member having an off-set surface, and forming a printing couple with said rotary member, said second member being adapted to receive a design from one of said non-yielding surfaces and to co-act with one/of said yielding surfacesto impress a sheet.

12. A prin ting press including in combination a cylinder carrying a plurality of planographic printing plates, inliing means for the aid cylinder, an offset cylinder, said' cylinders constituting a printing couple, said offset cylinder being arranged to rotate a plurality of times for each rotation of the platecarrying cylinder, and means which may be set t0 automatically canse the said printing couple t0 print upon one side of the sheet directly from a planographic printing plate, or from the plate to the offset surface and thence to the sheet, as desired. l

13. A printing press includin in combination a cylinder carrying a plura ity of planographic printing plates, iriking means for the said cylinder, an offset cylinder, said cylinders constituting a printing couple, said ofi'- set cylinder being arranged to rotate a plurality of times for each rc tation of the platecarrying cylinder, and means which may be set to automatically cause the printing couple to print a sheet on both sides at oneiinpression, one side being printed directly from the plate and the other by of'setfroin the offset surface, or to print either a direct impression from the plate, or an offset'impression from the offset surface, on one side of the sheet only, as desired.

14:. A printing press including in combination a cylinder carrying a plurality of planographic printing plates, inking means for the said cylinder, an offset cylinder, said cylinders constituting a printing couple, said offset cylinder being arranged, to rotatela plurality of times for each rotation of the platecarrying cylinder, sheet handlingl means adapted to be set to take sheets atv such time and in such manner as to cause the printing coupleto give an impression direct from the printing plate upon a sheet, or to give an inipression from the printing plate upon the offset surface and then to the sheet, as desired.

15. A printing press including in combination a cylinder carrying a plurality of planographic printing plates, inking means for the said cylinder, an offset surface, said cylinders constituting a printing couple, said offset 'cylinder being arranged to rotate a plu-l rality of times for each rotation of the platecarrying cylinder, sheet handling means adapted to be set to take sheets at Suchtinie Sfr IOO

IIO

and in such manner as to cause theprinting couple to print a sheet on both sides at one impression, one side being printed directly from the plate and the other by offset from the offset surface, oit to print either a direct impression from the plate, or an offset iinpression from the offset surface, on one side of the sheet, as desired. y

1 6. A printing press including in combination a cylinder carrying a plurality of planographic printing plates, a cylinder carrying an offset surf ace, said cylinders comprising a printing couple, damping means for the platecarrying cylinder, hiking means for the platecarrying cylinder, gripper mechanism carried by one of said cylinders,'and means which may be set to automatically cause the gripper mechanism toftake 'a sheet after every revolution of its cylinder or to take a sheet after a plurality oi revolutions of its cylinder,

. 17. A printing press including in combination a cylinder carrying a pliirality of planographic printing plates, a cylinder carrying anoffset surface, said cylinders4 constituting a prlntlng couple, said offset cylinder being adapted to make .a revolution foreach plate carried'by the 'plate-carrying cylinder, dampingmeans for the i plate-carrying cylinder, inking means for the plate-carrying cylinder,

lgripper mechanism carried by the offset cyl-4l` indel, and means which may be. set to automatically cause the grippers to take a sheet after each revolution of the offset-'cylinder or to take a sheet aftera plurality of revolutionsof the offset cylinder.

`18. A rinting press including vin combination a cy inder carrying a luraility of planographic printing plates an inkslabs'in alternate relation, damping means for the said cylinder, inking means for the said cylinder,

a cylinder carrying an oiiset surface, said cylinders constituting a printing couple, said offset cylinder being adaptedto make a revolution'for each printing plate carried by the plate-carrying cylinder, grip er mechanism carried by said offset cylin er, and means which may be set to automatically'cause the grlppcrs'to take a sheetafter each revolution Aof the ofi'setcylinder orto take a sheet after `a lurality ofrevolutions'of theoHset cylim er.

19. A printing press including in combina- 'tion a form cyllnder carrying a plurality of 5 planographic printing plates, an inking systcm for inking theplates u on the said cylinder, damping means for r amping the plates uponthe said cylinder, a cy inder carrying an'ol'set-surface and constituting withthe said form cylinder a printingcouple, automatic sheet-feeding means for feeding sheets,

' and settable controlling means for the'sl1eet-- feeding -lneans to regulate the .feeding of sheets' to the printing couple relatively vto the -rotation of its members.

20. A rinting press including in combina.-`

' tion a cy inder carrying a planographic print-.-

' ing pljatr-` means for damping the said plate,

a series of inking rolls ada ted to contact with saflvplate to ink the p atc, and means carried i y the said cylinde'll which may be setto move away any desired number of the' said'rolls while' the. printing plate" is passing L' A printing press includi in combination a cylinder carrying'a plura ity of planographic printingplates, means for damping the said plates, a series of inking rolls adapted to ink the plates asthey pass, underneath the rolls, and means which may beset to 'automatically cause a greater number of rolls t0 act on one plate than on another.

23. A rintingpress including in combination a cy inder' carrying a`planographic rinting plate and an ink slab, means for darn ing the said plate, a series of inkrolls adapted to contact with said printing. plato and Witlisaid ink slab, 'and means for moving any desired number ofsaid ink rolls-v out 'of contact with the printing plate.v y

24. A print-mg press mcludingin combination a cylinder carrying a plura ty of vplano#A graphic printing plates,` means for damping. the said plates, a plurality of ink slabs, a serieso ink rolls vadapted to contactwith thesaid printing plates and said-,ink slabs, and

means settable with respect toeach printing Y plate for determining the number of'ink rolls.

that shall contact with such rintingplate.,

25. A printing press inclu lng 1n combination a cyllnder carrying a planographic print; ing plate, means4 for dani ing the said plate, a series of movable ink ro ls normally 1n contact with the printing plate as it passes beneath the rolls,- a member settable with reference to any desired number of the'inkjrolls in the said series, and a member carried bye' the printing cylinder for rendering lthe said` settable member operative to .move away such ink vrolls out of contact with thel printing plate as it passes'underneath.

26..' A rmt-ing press including in combinartion a cy inder carrying a pluralityofplano graphic printing plates, means forv dam ing` the said plates, a series 'of movable 1in "ng rplls dapted to- Contact with the ,plates as t ley maybe set topermit the inkin rolls to con'- tact with a plate or to move t e rolls away so as'to prevent their contact with the'plate, and means which may beset to'determine the number of rolls to be acted upon by the said moving means. 27. A printing press including in combina? tion a cylinder carrying a plurality of planographic printing plates, means for damping the said plates, a' series of movable inking rolls adapted' to contact with the plates as they pass beneath the -rolls,a cam carried upon the c linder in adefinite relation to a print- `ing p ate, and movable -means carried on the frame of the press which may be inter osed between the said cam and the saidroills to move the rolls out of contact with the plate.

28. A rinting'press including in combination a cylinder carrying La plurality of planoroo ass beneath the rolls, means which graphic printingz plates, means for damping the said plates,. av seriesof movable inking rollsadapted tocontact withthe plates as' they pass beneath the rolls, a cam carried uponthecylindenin a detiniterelation to a printing plate. and means which may be set so as to cause the said cam to move any desired number of the inking rolls away so as to prevent their contact with the plate.

29. A Yprinting press including in combination a printing cylinder carrying a planographic printing plate, means for damping the said plate, 'a series of movable ink rolls normally in contact with the printing plate as it passes beneath the rolls, a member settable with reference to one or more of the ink rolls in the said series, and a member carried by the printing cylinder which may be set to render operative or inoperative the said settahle member' to move away the ink rolls out of contact with the printing plate as it passes underneath.

30. A printing press including in combination a cylinder carrying a plurality of planographic printing plates, damping means for the said cylinder, inking means for the said cylinder, a cylinder carrying an oifset surface, said cylinders constituting a printing couple, said oifset cylinder being adapted to make a plurality of revolutions i'or each revolutlon o'fthe plate-carrying cyhnder, grippers carried upon the said oilset cylinder, means for actuating sald grippers at every rotation of" the oifset cylinder, and means Which may be set to automatically throw said actuating 'means out of operative relation to the said gri ppers. l

31. A printingpress including in combination acylinder carrying a plurality of plano' graphic printing plates, damping means for the said cylinder, inking means for the said cylinder, a cylinder carrying an offset sur- 'face, said cylinders 'constituting a printing couple, said offset cylinder being adapted to make a plurality of revolutions for each revolution of the plate-carrying cylinder, grippers carried upon the said offset cylinder,

-Ineans for actuating said gripp'ers to cause f couple, said olfset cylinder being adapted to make a plurality of revolutions for each revolution oll` the plate-carrying cylinder, grippers carried upon the said offset cylinder, means normally in position to actuate said `grippcrs at each revolution of the offset cylinder to cause them to take a sheet, a cam Vfor moving said actuating means out of operative relation to said grippers, and a member which may be moved into position to connect said, cam and said actuating means or to disconnect the said cam from the said actuating means.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

GEORGE R. CORNVVALL.

Witnesses 1 JOHN D. MORGAN, CLARA PinLLirs.

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