US1148471A - Printing-press. - Google Patents

Description

T. WENSEL.

PRINTING PRESS.

I I APPLICATION FILED JAN. 11,1913- hMfiAH u, Patented July 27, 1915.

6 SHEETS-SHEET lr b I 6' ZOIOZZI Y\-IZ I TLWENSEL.

PRINTING PRESS A PLICATION F ILED JAN- 11. 193- L Patented July 27, 1915.

6 SHEETSSHEET 2- T. WENSEL.

PRINTING PRESS.

APPLICATION man JAN 11, 11913.

6 SHEETS-SHEET 3.

Patented July 27, 1915.

T. WENSEL.

PRINTING PRESS. APPLICATION FILED JAN. 11, 1913.

Patented July 27, 1915.,

6 SHEETS-SHEET 4- T. WENSEL.

PRINTING PRESS. APPLICATION FILED JAN. H, 1913.

Patented. July '27, 1915.

, T. WENS EL.

PRINTING PRESS. 1 1 APPLICATION FILED MN- ll, l9l3.

L J A 9 .1j{ w m Patented July 27, 1915.

6 SHEETS-SHEET 6- 42 WmszfZ- imam.

To all whom it may concern:

:r Parana critics,

*rnnonon wnnsnr, one winner, rumors PRINTING-PRESS.

Be it known that I, Tnnonon WnNsnL, a citizen of the United States, and a resident of Joliet,-county of Will, and State of Illinois, have invented certain new and useful Improvements in Printing-Presses, of which the following is a specification.

My invention relates generally to improvements in printing presses, and has particular reference to presses adapted to carry out the transfer or indirect method of printing.

lhe objectof' my invention is to provide a press for transfer printing which will enable the production of artistic prints at a rapid rate and at low cost.

A further object of my invention is to provide a printing press for transfer printing adapted to use ordinary commercial printing plates and type, such as are now used in direct printing; and a further object is to provide means for reinking the shadows or denser portions of prints after the general application of ink to the entire picture or form.

A further object of my invention is to provide a printing press adapted to carry out" the process of producing illustrations described andclaimed in my pending application; Serial No. 705,678.

My invention consists generally in a printing press having a frame or bed for receiving and holding-printing plates, a. transfer cylinder adapted for engagement with the printing plates, another transfer cylinder adapted for engagement with the first mentioned or printing plate contacting transfer cylinder, and an impression cylinder adapt- 7 ed to present paper, or other materialto be printed, to the second mentioned transfer cylinder.

My invention consists further in a printing press having a type-carrying or printing surface frame or bed, a transfer cylinder mounted adjacent to the type-carrying frame. a transfer cylinderr mounted adjacent the first mentioned transfer cylinder, and an impression c'ylindermounted adjacent the second mentioned transfer cylinder, means for moving the first-mentioned transfer cylinder into ink-transferring engage I ment with-the printing plates, .means for moving the second mentioned transfer cylinder into ink-transferring engagement with the first-mentioned transfer cylinder, and means for moving the impression cylinder,

Specification of Letters Patent;

Patented Mayer, 1915..

Application filed January 11, 1913. Serial No. 741,558.

with the material to be printed upon, into ink-transfer engagement with the second mentioned transfer cylinder.

My invention consists further in a printing press having a reciprocating type bed, a transfer cylinder mounted over the type bed, a transfer cylinder operatively connected to said first mentioned transfer cylinder, and an impression cylinder operatively connected to the second mentioned transfer cylinder, means'for moving the first mentioned transfer cylinder .to .and from the type, means for moving the second mentioned transfer cylinder to and from the first-mentioned transfer cylinder, and meansfor moving the impresison cylinder to and from the second mentioned transfer cylinder, and means for reinking the shadows or denser portions of-the print after the generalapplication of ink to the printing plates.

,My invention also gonsists in a printing press mechanism so arranged, and opera- 33 of Figs. 1 and 2, showing the mechanism for raising and lowering the cylinders and for actuating the type bed; Fig. 4 is a view substantially on the line 44 of 3 showing in elevation the various mechanisms for actuating the printing cylinders; Fig. 5 is a detail sectional view substantially on the line 5-5 of Fig. 4:, showing the cross shaft and foot lever which is operated "to prevent the cylinders from moving into contact with the bed and into contact with each other; Fig. 6 is an enlarged view on side elevation of the cylinder throw-out mechanism; Fig. 7 is a view similar to Fig. 6 with one of the outer parts of the mechanism removed better to disclose the interior operating parts; Fig. 8 is a sectional view substantially on the line 8--8"of Fig. 6 5 and Figs. 9 to 12, inclusive, are diagrammatic views illustrating the type bed, transfer cylinder, and impressioncylinder in different operative portions.

For producing certain kinds of printing.

and when printing upon paper or other material of rough or matted texture, it.is impracticable to print directly from printing plates. This is particularly so when printing from art picture surfaces. This subject is discussedat length in my pending application, Serial No. 705,678, enti'tled"Process of producing illustrations. I am aware that indirect printing presses, using the term printing pressin a most liberal. sense, are at present 111 use. "They are known as offset presses, and comprise a cylinder on which the printing surface is mounted, an offset cylinder, and an impression cylinder. These presses, however, are all'lithographicpresses, as contrasted with the ordinary printing press in which the type is inked and the ink transferred to the paper by means of pressure, and without the use of water or other liquids to repel the ink from certain portions of the plate. I shall briefly relate the method of using same. For this purpose let .us consider a customer who has half tone plates from which he wants prints reproduced by the oflset press.- The printer-upon receiving the cuts reproduces from them; aspecial positive cut orv printing surface. This specially prepared positive printing surface is thenfl-secured. upon the cylinder, inked by a special method, and the offset cylinder pressed against it,

thereby producing'on the offset cylinder a provide a press forcarrying out the said process and for making transfer prints from the ordinary commercial negative printing plate.

In order that the general operation of my press may be quickly understood, I shall first describe it with reference to the diagram-- .matic views, Figs. 9 to 12 inclusive. 2 represents a type bed, which is mounted for reciprocation. I prefer to use a fiat type bed because of the ease and convenience of arranging and holding the printing plates thereon, but I wish it to be understood that my invention is capable of use with type beds of other forms. Over the bed 2 are notatably mounted cylinders, 3, 4, and 5. The cylinders 3 I shall refer to as the first trans fer cylinder, the cylinder 4 as the second transfer cylinder, and the cylinder 5 as the impression cylinder. Each of the cylinders is mounted in manner to be described in detail hereinafter, so that it can be raised and lowered at desired intervals, and so that the raising and lowering operations can be interrupted at times to stop the printing while the parts continue in motion. Just as the type bed starts its return movement from the position shown in Fig. 9, the first transfer cylinder is brought down into contact with the type or printing plates on the type bed,

the plates having previously been inked by suitable inking mechanism. As the bed moves backward, an inked impression is transferred from the typeto the first transfer cylinder. After the ink is transferred from the type to the first transfer cylinder, and as the feed point of the transfer cylinder approaches a line connecting the centers .of the first and second transfer cylinders, the second transfercylinder is brought down into contact with the first transfer cylinder and-as these two cylinders rotate together the ink is transferred from the first transfer cylinderto the second. By this time the impression cylinder bymeans of its paperfeeding mechanism 12 picks up from the feed board 14: a sheet of paper or other material 13 and carries it around, and at the time the feed point 15 of the second transfer cylinder approaches the line connecting the centers of the second transfer cylinder and the impression cylinder presses the paper against the second transfer cylinder and the paper is thereby printed and then discharged. It will be seen, therefore, that the transfer of ink from the type to the first transfer cylinder, from the first transfer cylinder to the second, and from the second to the paper takes place during substantially one revolution of the cylinders. During the other revolution of the cylinders the first transfer cylinder is raised to permit free passage of the type bed under it, and the other cylinders are spaced from one another.

to prevent transference of ink.

While I have illustrated a press in which the cylinders make two revolutions for each print, it should be understood that my invention is capable of embodiment in a press in which the cylinders make one, two, or more revolutions for each print. The type or printing plates 1 are ordinary negative printing plates or type and the inked impression produced upon the first transfer cylinder is therefore positive. The inked impression upon the second transfer cylinder is negative and hence when the ink is finally transferred from the second transfer cylinder to the paper it produces a positive picture.-

Transfer printing presses, as before stated,

are'largely used for the production of art pictures and in making such pictures no carry out the said process.

I have described in my process of printing, before mentioned, how to use the ordinary commercial plate, and to secure extremely artistic effects, and I prefer to make the cylinders 3, 4, and 5 in a manner to The cylinder 3 comprises end portions or rolling surfaces 30 and an intermediate depressed portion 31. The end portions 30 are type high, that is, they are in the same plane as the top of the type when thevcylinder contacts the bearing 7 parts of the type forms (Fig. 3). It is therefore necessary to build up the intermediate portion to type-height. For this purpose I stretch several layers of make-ready paper over the cylinder. This I suitably secure at one end 32, to the cylinder and at the 30 other end to paper; reels 33. Over the paper for this I stretch athin sheet of material 35 which is preferably yielding and compressible and which brings the intermediate. portion to type height. I interpose relief plates or undulators 36 between the yielding material 35 and the make-ready paper. These are made with relief surfaces where the relatively heavier tones'of the picture are to appear and with depressed portions where the lighter tones are to appear. By stretching the yielding material over these plates it is .caused to conform substantially to the undulations thereof, and when the transfer cylinder is brought into contact with the ink of the printing plates an ink-selectiveaction, proportionate to the undulations of the printing plate, will be established therebetween. While in some instances I am able to select the ink from the printing plates so accurately that further selection is unnecessary, I can generally improve the picture by again selecting the ink from the first transfer roll.. This I" do by arranging differently-formed undulators under a yielding blanket 71 on the second transfer cylinder. As the second transfer cylinder is pressed against the first transfer cylinder,

the ink istransferred to the s econd-transfer cylinder thereby forming an inked impression which is different than that upon the first transfer'cylinderQ It may be that thepicture formed upon the second transfer cylinder can be improvedin some respects, and

purpose I can mount other undulators or relief members 90 upon the imcoincide with the undulators of the second I,

transfer cylinder, and can be made in such form as to produce the required pressure in the different areas to transfer so much ink from the second transfer cylinder to the paper as is necessary to produce the desired effect. The various relief plates on the different cylinders are not a part of the press in the sense that oneset is used for all purposes, because a new set is provided for every set of printing I lates, or, in other words, each job would ave a set of relief plates made for that purpose. It will be seen therefore that I can select the ink three times, if desired, thereby securing delicate artistic effects in form, shading, and tone such as is impossible to secure in any press v hitherto devised of which I am aware. In certain classes of work there are large areas of shadows or dense portions. In inking such forms with the usual inking mechanism to supply enough ink to the denser portions.

When printing from such a form with the present-day presses it is oftentimes neces sary to move the type bed back and forth several times under the inking mechanism for every print. This, of course, greatly reduces the output of the press and increases very largely the cost of the prints. To-overcome this difficulty, I provide a separate inking device 100 arranged to apply ink only to the shadows or dense portions of the picture subesequent to the general application of ink to the form. This may be arranged in several places inorder .to secure the desired effect, but I prefer to arrange it adjacent the second transfer cylinder and to so mount it that it can be thrown out of engagement with the second cylinder when printing light; Work and thrown into engagement with the second transfer cylinder for heavy work. When the inking device is used it engages the portion of the transfer cylinder formed by the relief plate. These portions therefore receive a double inking and enable the thorough covering of the paper in the dense portions of the picture.

.' Having thus described the general operation of the press, shall now describe the tween the runway and the type bed to remechanism more in detail. ,Theflat bed 2 duce the friction incident to the bed travel.

I The cylinders 3, 4, and 5, are mounted for rotation in journal boxes 3", 4 and 5', respectively, which are vertically slidable in the superstructure A of the press frame. The cylinders are all driven from the main drive gear 13' (see Fig. 1-) which is driven by any suitable means. The gear 13 meshes with a large gear 14 which drives the chain of gears 15 and 16. The cylinders 3, 4, and 5 carry gears 3', 4, and 5', respectively,

which-mesh with the gears 14 15, and 16 whereby the cylinders are given two revolutions for every reciprocation of the type bed. It. is obvious that the cylinders can raise and lower without interrupting the continuous intermeshing of the gears and therefore that the cylinders can rotate continuously. For the purpose of raising mechanism 26 to be described in detail here inafter..- The cross shaft 27 isrocked back and forth once during every two revolutions of the impression and transfer cylinders, or, in other words, it is rocked once every time a print is made. The rocking of the shaft 27 raises and lowers the first transfer cylinder. This will be best understood by reference to Figs. 2 and 3. A'pair of vertical draw rods 11 are provided on each side of the press. They extend from the lower part of the frame to the top of the transfer cylinder journal box, and the upper portions thereof are secured to the journal boxes. The lower ends are tied together by a cross member 11 which is adjustably secured thereto by lock nuts 11. It is obvious that by depressing the strap 11 which is secured to the rods 11 the box carrying the trans fer cylinder. will be lowered. The middle portion 11 is formed with two inclined planes, one upon the upper side and the other upon the lower side, and straddling this is a horizontally movable jaw 40 which surrounds the central .portion 11 of the strap. The inner end portion of the jaw is tapped at 41 to receive the threaded end 42 of the jack shaft 43. The jack shaft 43 carries a small gear 44 which meshes with a segmental gear 45 mounted on the cross shaft 27. As the cross shaft 27 is rocked by means of the mechanism 'before mentioned, the shaft 43 is given severalrevolutions, drawing'the jaws 40- first inwardly, thereby depressmg the strap 11, and the draw rods thereof and hence moving the transfer cylinder down into engagement with the type. When the shaft 27 is rocked in the other direction, the jaws 4O are shoved outwardly, thereby raising the transfer cylinder by engaging the lower inclined plane of the cross strap. Therefore positive means are provided for-raising and lowering the transfer cylinder 3. In order to assist in the raising,

-mechanism 26 for raising and lowering the impression cylinder 5 is actuated from the cam gear 53, driven by the gear 22. It is desirable and necessary at times to prevent the depression of the first transfer cylinder and to prevent engagement of the other cylinders with one another. For instance, in

making the press ready for'the regular run it is oftentimes desirable to run the type bed back and forth several times before starting, in order to spread the ink evenly. over the form and to get the press in proper running. order.

' The mechanism 26 carried on each of the cross shafts 27, 28, and 29, is adapted by proper manipulation of the parts to prevent rotation of their respective shafts by the movement of the levers 24,'50and 60. I do not limit myself to or claim specifically the mechanism 26 since the same is claimed in my pending application, Serial No.. 705,677, entitled Printing press attachments,-but I shall describe the same sufficiently to give a proper understanding of it. Since each of the mechanisms 26 is of the same construction, a description of only one will be given, reference being had particularly to Figs. 6, 7, and 8. The mechanism comprises a lever 49 which is keyed to the cross shaft 27. It has an extended hub 49 on which a plate-like lever 49 is mounted for free rotation. The lever 49 is connected to the cam actuated lever 24 by a connecting rod 20' and hence as the lever 24 moves back and forth the member 49 is rocked on the hub 49. The lever 49 is slotted in its upper portion and across this slot I arrange a cross bar 49. The member 49 is provlded with an overhanging portion 49, the end 49 of which extends into the upper slotted portion of the lever 49. Thus as the lever 49 moves in the direction of the arrow (1. (Fig. 7) the end portion 49 engages the cross bar 49, thereby moving the lever 49?. Since the lever 49 is keyed to the shaft 1t rocks therewith and thereby. sets in motion the mechanism, raising and lowering the cylinders. To move the lever 49* in the direction of the arrow -e (Fig. 7 I pivot a latch 4:9' to the lever 49 at 49 which operates in the slotted portion thereof. It has a hooked end portion 49 which is normally held in the path of the end portion 49 of the lever 49. Therefore, as the lever 49 is returned the lug 49 thereofengages the latchand pulls the lever 49 back with it.

This is the normal operation when printing vide a rocking cam plate 80 which is mounted to rock loosely upon the cross shaft 27.

It contains a cam groove comprising a portion 81 concentric with the shaft anda portion82 which is substantially radially arranged with respect to the shaft. The end of the hooked lever 49' is provided with a stud 49*" which extends through one side of the lever {29 and into the cam groove of the plate 80. On this stud is arranged a cam roller 49W. Normally as the lever 49*" is rocked back and forth, the cam roller travels I in, the concentric portion 81 of thecam grooves and maintains the hooked end 49 in engagement with the lug 19 When T 'desireto move the hook from engagement with the lug, ll simply rock the cam groove plate so that as the roller moves'backward .it

enters the radially arranged portion and of the mechanism are moved in the direction ofthe arrows d (Fig. 6); thereby prevent ing the cylinders from moving into printing position. This mechanism shallbe referred various cylinders, comprises a large inking to as the tripping mechanism.

. The mechanism 100 for applying ink to the shadows or denser portions of the picture, as defined by the raised portions of the cylinder 101, which preferably has a yielding covering upon whichthe ink is suitably spread by a plurality of 1nk rolls 102. The

cylinder 101 is mounted in journal boxes 104: which are slightly mounted in a frame 105 secured to the journal box of thesecond transfer cylinder. Hence as the transfer cylinder moves up and down the inking mechanism 100 moves with it. The inking cylinder 101 is normally held away from the second transfer cylinder by means of springs 106 interposed between the lower side of the box and the cross bar 107 of the frame 105. F or the purpose of throwingthe cylinder 101 down into engagement with the secondx transfer cylinder, I provide a cam lever 108. When running a heavy form, that is, a form having large areas which require considerable. ink, I throw the cylinder 101 into-engagement with the transfer cylinder where it engages the dense portions of the picture whence the dense portions are inked twice first by the normal inking mechanism 10". In this manner I am enabled to secure delicate shades in the. lighter portions of the picture and properly inked areas in the darker portions of the picture, and am also able to dispense with the need of running 85 the entire form back and forth under the general inking mechanism several times between each print.

By means of the press here shown, I am able to use ordinary printing plates to print 90 upon all kinds of material and to secure pictures of great beauty. Since the objects of my invention may be attained in other -ways, I do not wish to limit or confine myself to the specific mechanism and described;

ll claim? v 1. In a printing press the combination with a printing plate frame or bed for car'- herein shown ryingprinting plates, a first transfer cylinm0 der mounted adjacent the bed, a second transfer cylinder mounted adjacent the first transfer cylinder, and an impression cylin der mounted adjacent the second transfer .cylinder, means for moving the first transfer cylinder into ink-transferring engagement with the printing plates, means for moving the second transfer cylinder into ink-transferring engagement with the first transfer cylinder, and meansfor moving the impression cylinder into engagement with the second transfer cylinder, as and for the purpose specified.

' 2. In a printing press a reciprocating type bed, in combination with a first transfer cylinder rotatably mounted over the type bed, a secondtransfer cylinder operatively connected to the first transfer cylinder, an impression cylinder operatively connected to the second transfer cylinder, means 129 for moving the first transfer cylinder to and from the type bed, means for moving the second transfer cylinder to and ,from the first transfer cylinder, and means for moving the impression cylinder to and from' the second transfer cylinder.

3. A printing press of the class described, comprising in combination a reciprocating type bed, a first transfer efiylinder rotatably mounted over the type be ,a second trans- 130 j 59 tioned transfer cylinder, and tripping mechfer cylinder rotatably mounted over the type bed and operatively connected to the first cylinder an impression cylinder rotatably mountedover the type bed and operatively connected to 'the second transfer cylinder, means for moving the first trans fer cylinder into contact with the type, means for movingthe second transfer cylinder into engagement with the first transfer cylinder, meansfor moving the impression cylinder into engagement with the secinder into engagement with the second men'- 0nd transfer cylinder, and means operable to prevent/movement of the cylinders into printing position. I r

4. In a printing press the combination of a type-carrying frame or bed, an undulatory surfaced first transfer cylinder rotatably mounted adjacent said type-carrying frame,

an undulatory surfaced second transfer cylinder rotatably mounted adjacent said first mentioned transfer cylinder, and an impression cylinder rotatably mounted adjacent said second mentioned transfer cylinder, mechanism-operable to move the first transfer cylinder into ink-selecting relation to the type-carrying frame, mechanism operable to move the second'mentioned transfer cylinder into ink-transferring engagement with the first transfer cylinder, and mechanism operable to move the impression cyltioned transfer cylinder.

5.In a printing press the combination of a type-carrying frame or bed, an undulatory surfaced first transfer cylinder rotatably mounted adjacent said type-carrying frame, an undulatory surfaced second trans-- fer cylinder rotatably mounted adjacent said first mentioned transfer cylinder, and an impression cylinder rotatably mounted adjacent said second mentioned transfer cylinder, mechanism operable to move the first transfer cylinder into ink-selecting relation to the type-carrying frame, mechanism operable to move the second mentioned transfer -cylinder into ink-transferring engagement with the first transfer cylinder, mechanism operable to move the impression cylinder into engagement with the second menanism operable to present movement ofthe cylinders into printing position.

6. In a printing press,the combination of a type-carrying frame or bed, a transfer cylinder rotatably mounted adjacent said type bed, another transfer cylinder rotatably mounted adjacent said first-mentioned transfer cylinder, and an impression cylinder equipped with paper-feeding mechanism, and rotatably mounted ad acent sa1d second transfer cylinder, blankets of yielding material on said transfer cylinders adapted for interposition of relief plates,

and mechanism operable to move the first transfer cylinder into ink-transferrlng engagement with the type bed, the second transfer cylinder into ink-transferring engagement with the first transfer cylinder,

and the impression cylinder into a position for presenting paper with printing pressure to the second transfer cylinder, substantially as described.

7. In aprinting press the combination of a movable type bed for carrying printing plates, a first transfer cylinder rotatably mounted adjacent thereto, a second transfer cylinder rotatably mounted adjacent the first transfer cylinder, an impression cylinder rotatably mounted adjacent said second transfer cylinder, blankets upon each of said cylinders adapted to cover relief plates mounted on the cylinders, means for mor ing the first transfer cylinder into engage ment with the type, means for moving the second transfer cylinder into engagement with the first transfer cylinder in order to select ink therefrom, means for moving the impression cylinder toward the .second transfer cylinder to press paper into printing engagement with the second transfercylinder, blankets secured around each of the said cylinders andadapted to cover relief members mounted upon the cylinders for the purpose of providing undulatory cylinders of desired conformation, mechanisfn operable tomove the first transfer cylinder into ink-selecting relationto the type bed, mechanismfor moving the second transfer cylinder into ink-selecting relation to the first transfer cylinder, mechanism operable to move the impression cylinder after it has picked up thepaper into engagement with the second transfer cylinder, an inking mechanism adapted to apply ink to the shadows or denser portions of the picture subsequent to the removal of the ink from the printing plates to the first transfer cylinder, as and for the purpose specified.

9. In a printing press of the class ,described, the combination of a reciprocating fiat typebed, an undulatory transfer cylinder mounted over said type bed, a second undulatory-transfer cylinder mounted over the type bed and operatively connected for rotation with said first transfer cylinder, means for depressing the first transfer cylinder to'piek up ink from the type when cylinders.

moving in one direction, and means for moving the second transfer cylinder toward the first transfer cylinder,.means for moving the impressipn cylinder toward the second trans fer cylinder topresent paper thereto, subsequent to contact of the first transfer cylinder with the second transfer cylinder, andmeans operableto raise the first transfer cylinder to permit the free 'return of the type bed, and means operable to separate the various 10. In a printing press of the class mentioned a reciprocating type bed, in combination with a first transfer cylinder mounted thereover, a second transfer cylindermounted over the bed and rotatably operable with the first transfer, cylinder, an impression cylinder rotatably operable with the second transfer cylinder, paper fastening and reel,- ing means on said first transfer cylinder for I stretching paper thereon, a plurality of relief members mounted on said paper to coincide with predetermined portions of the printing plates on the type bed, and a blanket stretched over said relief members, as and for the purpose specified.

11. In a printing press the combination of a reciprocating flat type bed, a yielding sur: faced ink-selecting transfer cylinder rotatably mounted over said type bed, a second yielding surfaced ink-selecting transfer cylinder operatively rotatable with said first transfer cylinder, an impression cylinder operatively rotatable with said second transfer cylinder, mechanism for releasing and lowering all of said transfer. cylinders in proper timed relation, and mechanism operable to prevent depression of all the cylinders in order to stop the printing operation.

12. In a printing press a movable bed or frame, a first transfer cylinder, a second transfer cylinder, and an impression cylinder rotatably mounted, mechanism for moving the cylinders into and out of printing position, an auxiliary inking device arranged adjacent the secondrcylinder and adapted to apply ink to raised portions of the second transfer cylinder, as and for the purpose specified.

13. In a printing press, the combination of a reciprocating type bed, a first transfer cylinder, a second transfer cylinderand an impression cylinder rotatably mounted over the type bed in vertically sliding journal boxes, a pair of horizontally slidable jaws arranged below each cylinder, said jaws being operable to raise and lower the cylinders through suitable connecting mechanism. I

14:. In a printing press, a reciprocating type bed, a first transfer cylinder, a second transfer cylinder and an impression cylinder rotatably mounted over the type bed in vertically slidable journal boxes, a pair of horizontally slidable jaws arranged beneath each cylinder, mechanism for reciprocating the aws, means operatively'connecting same to respective cylinders whereby the reciprocation of the jaws raises and lowers respective cylinders, as and for the purpose specified.

'15. In a printing press, a reciprocating type bed, in combination with a first transfer cylinder, a second transfer cylinder and an impression cylinder, rotatably mounted adjacent said type bed and mounted for vertical movement, mechanism operable to move the first transfer cylinder into contact with the type, the second transfer cylinder into.

contact with the first-transfer cylinder, the

impression cylinder into contact with the,

second transfer cylinder, mechanism operable to prevent movement of the cylinder into printing relation and a single foot lever depressible to operate said mechanism for' preventing movement of the cylinders, into printing position.

16. In a printing press of the class described, a reciprocating fiat type bed, a first transfer cylinder rotatably mounted thereover and adapted to be brought into contact with the type, a second transfer cylinder into printing position, substantially as described.

17. In a transfer printing press, the combination of a movable type-carrying frame, a first transfer cylinder adapted to contact the type bed, an undulatory' surfaced second transfer cylinder adapted to contact the first transfer cylinder, animpression cylinder adapted to press paper with printing pressure against the second transfer cylinder, an auxiliary inln'ng mechanism movable with the second transfer cylinder and normally spaced therefrom, means for moving said mechanism into contact with the second transfer cylinder to ink the relief portions thereof.

18.-In a rinting press, a reciprocating type bed, a rst transfer cylinder, an undulatory surfaced second transfer cylinder and an impression cylinder, rotatably operable thereover, the press beingadapted to rint between the impression cylinder an second transfer cylinder, in combination with an auxiliary inking device arranged adjacent the second transfer cylinder and slidable toward and away from the second the ltd

transfer cylinder, spring meansnormally holding the same in spaced relation to the second transfer cylinder, and positive means for moving the inking mechanism into contact with the relief portions of the second transfer cylinder, as and for the purpose v specified.

19. In a printing press, a reciprocating type bed, a. mounted thereover and vertically slidable to and from the type bed, a vertically slidable rst transfer cylinder rotatably' of a printing plate or type holder for carry- 7 ing type and plates, a first transfer cylinder mounted adjacent the'type holder, a second transfer cylinder mounted adjacent the first transfer cylinder and an impression cylinder mounted adjacent the second transfer cylinder and adapted to cooperate therewith for forming an impresion, means for causing relative movement between the first transfer cylinder and the printing plate holder for bringing the transfer cylinder into ink transferring engagement with the plates, means for contacting the first and second transfer cylinders to establish ink transferring engagement therebetween, and means for causing engagement between the impression cylinder and the second transfer cylinder, as and for the purpose specified.

In testimony whereof, I have hereunto set my hand this 4th day of January, 1913, in

the nresence of two subscribing witnesses.

THEODOR WENS EL.

Witnesses:

ARTHUR W. NELsoN, M. SIMON.

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