US1014923A - Printing-machine. - Google Patents

Description

A. VALBNTIN, J ZERREISS & H. GEORGES.

' PRINTING MACHINE. APPLICATION FILED IIEB. 24, 1910.

Patented Jan. 16, 1912.

14 SHEETS-SHEET 1.

AQVALENTIN, J. ZERREISS & H. GEORGES.

PRINTING MACHINE. APPLICATION FILED FEB. 24; 1910.

Patented Jan. 16, 1912.

14 SHEETS-SHEET 2..

PR INTING MACHINE. APPLICATION FILED FEB. 24, 1910.

Patented Jan. 16, 1912.

14 SHEETS-SHEET 3.

A. VALENTIN, J. ZERREISS & H. GEORGES.

PRINTING MACHINE.

APPLICATION FIL B1) FEB. 24, 1910.

Patented Jan. 16, 1912.

14 SHEETS-SHEET 4.

A. VALENTHLJ. ZERREISS 6: H. GEORGES. PRINTING MACHINE.

APPLIOATION FILED FEB.

Patented Jan. 16, 1912.

14 SHEETS-SHEET 5.

mwmp .ZERREISS & H. GEORGES;

. VALENTIN, J

PRINTING MAOHINE. APPLIOATION FILED r2314, 1910.

Patented J an. 16 1912.

A. VAL NTIN, J. ZERREISS & H. GEOR'GES.

PRINTING MACHINE.

1' APPLICATION FILED 33,2 1, 1'910. ggg Patented Jan.16,1912.

14 SHEETS-SHEET 8.

J. ZERREISS & H. GEORGES. PRINT APPLIOATION IILEDIEB. 24, 1910.

A; VALENTIN,

ING MACHINE.

Patented Jan. 16, 1912.

A. VALENTIN, J. ZERREISS & HLGEORGES.

PRINTING MACHINE. APPLIOAIION FILED FEB. 24, 19ml Patented 11111 1912.

14 SHEETS-SHEET 10' A. VALENTIN, J. ZERREISS & H. GEORGES.

PRINTING MACHINE. APPLIOATVION IILED' FEB. 24, 1910.

Patented Jan. 16, 1912.

14 SHEETSSHEET 11.

A. VALENTIN, J. ZERREISS 6: H. GEORGES.

PRINTING MACHINE.

APPLICATION FILED FEB. 24, 1910.

Patented Jan. 16, 1912.

14 SHEBTSSHEET 12.

A. VALENTIN, J. ZERREISS & H. GEORGES.

PRINTING MACHINE.

APPLICATION FILED FEB. 24, 1910.

Patented Jan. 16, 1912.

14 SHEETSSHEET l3.

A. VALENTIN, J. ZERREISS & H, GEORGES.

PRINTING MACHINE.

APPLICATION FILED FEB. 24, 1910.

Patented Jan. 16, 1912.

14 SHEETS-SHEET 14.

FTATEd} PATENT @FFFQE.

AUGUSTE VALENTIN, JEAN ZERREISS, AND HENRI GEORGES, OF PU'I'EAUX, FRANCE.

PRINTING-Macrame.

To all whom it may concern:

Be it known that we, AUcUs'rE VALENTIN, JEAN Znnnnrss, and HENRI Gnonons, citizens of the Republic of France, residing at Puteaux, in France, have invented new and useful Improvements in Prlnting-lllachmes,

of which the following is a specification.

same time for art printing, such as repro- Plates engraved in intaglio by the process described in the French Patent No. 395300 orbysimilar processes, can be used at the duction of pictures, photographs, engravings, etc, and for'illustration of industrial printed matter of all kinds. For carrying out the numerous applications of the process, it is-indispensable': 1. To be able to print engravings at a high speed by doing away with the long and difficult setting and registration of the present printing processes, while using paper of any quality. 2. Tobe able to'print at the same time as illustrations, also the letterpress which accompanies them in the majority-of cases. i

It is in order to fulfil the above conditions that the machine hereinafter described, has been designed and constructed, and by means of the said machine it is possible: 1..

To print at a high speed, by means of rubher, from intaglio plates on all kinds of paper, fabrics, etc. 2. To print at a high speed from typographic letterpress or blocks. 3. To print simultaneously at high speed, by means of rubber, from iintaglio on the line 6-?) of Fig. 3, hand side a halffront showing a section of one half of the cylinder.

engraving plates, and to print direct at high speed from typographic letterpress or blocks on one sheet which is fed into the machine only once.

The invention is illustrated in the accompa-n'ying drawings in which :Figure1 is section on the line dd of Fig. 5; Fig 5 showsan end view of the cylinder C at the side of the run, the right hand portion on the line ee of Fig. 47; Fig. 6 is an end view of the; cylinder 1); Fig. 7 is a longitudinal elevation of the same cylinder, the portion ff being a section on the line gg Specification of Letters Patent.

Patented Jan. 16, 1912.

Application filed February 2 4, 1910. Serial K055453384.

of Fig. 6; Fig. 8 is a section on the line 7b'h of Fig. 20, and shows. the mounting of the spindle carrying cylinder E on the frame, and the mounting of the cylinder E on its spindle; Fig. 9 is a section on the'line aa' is a front elevation showing the mounting of one of the contact rollers of the inking mechanism for intagli'o plates; Fig. 14 is a section on the line dd of Fig. 13, showing the mounting of one of the journaisof a contact roller in the frame; Fig. 15 is a plan view of mechanism connected with the cylinders B and C; Fig. 16 is a section on the line 12 -01 of Figs. 10 and 11; Fig. 17 is a section on the line bb of Figs. 10 and 11; Fig. 18 is a section on the line c-'c of Fig.- 11; Fig.19 shows a side elevation of certainportions of the machine hereinafter referred to; Fig. 20 is a side elevation taken from the other side of the apparatus shown in Fig. 19; Fig. 21 is a'plan of the typographicinking device; Fig. 22 is a projection on a plane parallel to the line m-m (Fig. 20), of the bearings and of the contact rollers'mounted on the frame of the machine;'Fig. 23 is a projection on a plane parallel to the line p g2 (Fig. 19), of the reciprocating mechanlsm for the distributing tables; Fig. 24 is a View of the portions R, Q, V, X, Y, Z, (Fig. 1) of the machine and shows the feedmechanism and the mechanism for reversing and receiving printed sheets; Fig. 25 shows-the otherside of the portion R, Q,'V, X, Y, Z, (Fig. 1) of the face of themachine and comprises the other side of the feed mechanism and the mechanism for receiving printed.

sheets; Fig. 26 is a plan view of the mecha nism shown in Figs. '24-and 25; Fig. 27 is a front elevation of the driving mechanism, disengagement device, and brake arranged on the machine as shown in Fig. 1; Fig. 28 is a side elevation. of Fig. 13 showing the operating lever for the clutch disengaging device and brake; Fig. 29 is a plan of Fig. 27 showing the suppo rt, the brake mechanism and its action on the rim of the flywheel; Fig. 30 is a longitudinal section of Description of the maokz'n.-The ma- .the machine; Fig. 31 shows an arrangement I when .three cylinders B are used when printing with three colors.

intermediate cylinder C on which 'nism G for intaglio plates.

chine hereinafter described comprises in principle (Fig. 1) 1. A frame A consisting of two cast iron parts secured to a cast iron bedplate 3. 2. A cylinder B to which are secured plates engraved in intaglio. 3. is stretched a soft rubber blanket. 4:. A pressure cylinder D provided with a hard rubber blanket and carrying the pincers for seizing and driving the paper during the printing. 5. A cylinder E to which are secured the typographic blocks or letterpress, suitably curved. 6. An inking mechanism F for intaglio plates. 7. A wiping mecha 8. A11 inking mechanism H for typographic plates. 9. A

- feeding mechanism and a mechanism for reversing and receiving the printed sheets, consisting ofthe reversing cylinder I and the taking off or delivery frame J. 10. A driving mechanism with clutch and brake.

Frame A.The frame consists of two lateral cast iron parts secured. to a cast iron base 3. These different parts of the frame have been designed and arranged as shown .in the drawings, so as to enable the difl'erent parts of the machine to be fitted up. The details of the frame will be described at the same time as the parts in connection with it.

Cylinder- B, Figs. 2' and 3.-The cylinder B is a cylinder to which are secured the plates engraved in intaglio. The plates intended for printing are first beveled and suitably curved or bent so as to enable them to be'secured to the circular surface of the cylinder by means of clamps usually employed for the purpose. The time required for securing the said plates can be fairly long, more particularly in the case in which the arrangement of the-said plates presents a certain complication. During that time the machine stands still and does not do any work. His in order to avoid that loss of time that the plates are arranged first on .a

semi-circular cast iron armor or casing .which can be afterward easily placed on the cylinder without causing any loss of time.

The cylinder B is constituted by a circular cast iron rim 5. The two ends of the said rim are closed by two disks Sand 7 which form at each of the said ends two cir the projections or bosses of the toothed wheel 19. Three of the said arms, as shown in Fig. 2, are provided with holes through which pass bo1ts-21 used for securing the toothed wheel 19 which engages with the toothed rim of the cylinder C and with the driving pinion 281 (Fig. 17). The arms 23 of the toothed wheel 19 are provided with oval' holes corresponding to the bolts 21 of the disk 8, so as to enable the toothed wheel 19 to be easily fitted on the disk 7 of the cylinder B. The circular rim 5 is provided with circular grooves 24. It is at the bottom of the said grooves that will be situated the fixing lugs 25 of the semi-cylindrical casing 26. The bottom of the grooves 24 is provided with three mortises 27 into which are introduced the annular heads 28 of the fixing bolts 29 for the casing. Through the said annular heads pass suitably'arranged pins 30 as shown in Figs. 2 and 3. The bolts 29 can be pivoted about .the pins 30. The grooves are each pro vided at the bottom with holes into which are introduced register pins 38 secured to the upper attachment lugs of the casing.

The circular rim 5 of the cylinder B isprovided on the half intended to receive the semi-circular casing 26 with semi-circular bosses or bearings 32 which are continued on the other half of the circular rim 5 by grooves 33 of which they form the bottom and which afford passage to the tool during the turning of the bosses or bearings. The other half of the rim is provided with semicircular rings cast with the cylinder, and intended to balance the cylinder by compensating the weight of. the armor or casing 26.

The casing 26 is constituted by a semi-' circular cast steel rim 34. The concave portion of the said part is provided with bearings or bosses 35 which come to rest on the bearings 32 of the cylinder when the casing is put in place. The convex surface of the said casing is provided with dove-tailed grooves 36, into which are introduced dovetailed heads of fixing claws for the beveled plates. These claws are similar to those generally used in, printing presses. The casing is provided on both its lateral sides wit-h attachment lugs 25 which have recesses 37 affording passage to bolts. Pins 38 are. secured to the concave portions of the attachment lugs 25. v

As will be readily understood, the putting in place and the removalof the armor or "casing can be effected 'very quickly. The casin after having been provided with printing p ates is placed on the cylinder in keyed to the spindle 12, is arranged on the frame in such manner that the journals of the spindle 12 are situated in the bearings 39 of the brackets 40 and41 of the frame.

cases, in order to give more flexibility to the blanket, it may be advisable first to arrange on the cylinder a first blanket of harder rubber. For that purpose the hooks 45 have been designed so as to enable them to receive two bars, and a second tension spindle 46 has been arranged on the cylinder,

leave between them arms 58 with inner ribs.

around which second spindle is wound the end of the first blanket. ing 43 is closed at each of its ends by means of disks 48 and 49 which form at each of the These two disks are provided at their centers with hubs 52 and 53 by means of which the a cylinder C can be mounted on the spindle 54' by means of keys 55 and 56. The disks 48 and 49 are provided with openings 57 which The disk 49 is provided with acircular boss or hearing 59 on which is -mounted toothed rim 60.

The cylinder is strengthened inside by longitudinal ribs 61. The toothed rim is designed so that any wear or play can be taken up. It is constituted by two circular rims 63 and 64 joined at their faces the teeth being cut on both rimssimultaneously. The

rim 68 is mounted on the circular bearingor;

boss 59 of the disk 49. on which it is secured to the cylinder C by means of bolts 65 pro.

vided with collars or rings 66 and screwed into the disk 49. The rim 64 is secured to the rim 63 by means of nuts 67 of the bolts 65 on which it is placed. The tension spindles 46 and 47 can rotate in holes made in the disks 48 and49. The collars 68 and 69 with pins prevent the said spindles from moving in the longitudinal direction. The tension spindles46 and 47 are provided with two ratchet wheels 7 0 and 71 with the teeth of which engage pawls 72 and 73 held by springs 74 and 75 secured to the pawls by means of pins 76 and 7 7, and to the bottom of the recess 44 of the cylinder by means of screw hooks 78 and 79. The outer ends of the tension spindles are formed into square portions 80 and-81 which fit a spanner, so

by means the keys 55 and 56, is mountedon the casing in such manner that'the journals of the spindles 54 are disposed in the The circular casthe the longitudinal direction.

bearings 82 and 83 of the brackets 84 and with a longitudinalrecess 88 in which are arranged hooks 89 to which isattached an iron bar secured to one of the ends of the blanket. The other end of the blanket is wound around the tension spindle 90. In certaincases, for causing the pressure to be more variable, it will be advisable first to arrange on the cylinder a felt blanket. It is for that reason that the hooks 89 have been arranged so as to be able to receive two bars. and that a second tension spindle 91 has been provided on the cylinder, about which second spindle is wound the end of the first. blanket.

The circular. rim or casing 87,,isclosed at each of its ends by disks 92 .and 93 which constitute at each of the ends of the cylinder two circular tracks 94 and 95. .These two disks are provided at'their-centers with hubs 96 and 97 which enable the cylinder D to be mounted on the spindle 98 by means of keys 99. The disks 92 and 93 are provided with openings 100 between which are left arms 101 with inner ribs. The disk 93 is provided with a circular boss or bearing 102 011 which is mounted the tobthed rim 103. The cylinder is strengthened inside by means of longitudinal ribs. The toothed rim 103 is mounted on the said bearing or boss 102'and secured to the cylinder bymeans of screws 104.

- The tension spindles and 91 can rotate inthe holes made in the disks 92 and 93.

The collars 105 and 106 provided with pins,

prevent the said. spindles from moving in The tension spindles 90 and 91 carry ratchet wheels with the teeth of which engage pawls 109 and 110 held by means of; springs 111 and 112 attached on the one hand to the pawls by means of pins 113 and 114, and on the other hand to the bottom of the recess 88 of the cylinder by means of screw hooks. The ends of the tension spindles are formed into square portions 115 and 116 on which the spanner'fits, so that by rotating the tension spindles, the ends of the blankets can be wound and consequently the blanket stretched 0n the cylinder.

The pincers 86 are mounted on the spindle 117 arranged in the longitudinal recess 88 of the-cylinder. One of the ends of the spindle 117 rotates in a hole made in the disks 93, and the other end passes through the disk 92. Longitudinal movement of the spindle 117 is prevented by the collar 118.

To the outer end of the spindle is secured by means of a pin a part 119 provided with grooves 120 and 121 with which will suecessively engage during the rotation of the cylinder, stationary pins 121Fand 122 (Fig.

24) which will open and close the pincers by reversing the part 119. The spindle of the pincers carries a handle 123 which is connected to the end 124 of the pivoted rod 125. The said rod can slide with a slight amount of friction in'the hollow rod 126the end of which is secured in the interior of the cylinder asshown in the drawing. Around the rod 126 is placed a spring which exercises pressure on the one hand on the outer hinge of the rod 126 and on the tenon 124 of the rod 125 placed in the crank 123, and after each closing movement of the pincers, forces the said pincers against the surface of the cylinder, and after eachopening movement brings about the engagement of the reversing part with-the stop 127 suitably arranged on the disk 92 to which it is secured by means of screws 128. To the circular'rim'92 is secured a cam 129 by means of screws 130. This cam during the rotation of the cylin der, comes into engagement with the roller 407 of the lever 408 (Fig. 24) and insures,

as will be hereinafter explained, the closing of-the pincers of the reversing cylinder.

The cylinder D is mounted on the spindle 98 by means of keys 99. To the spindle 98 is keyed a toothed pinion 133 secured by means of a screw 234. This pinion is used for driving the typographic inking device H (Fig l) as will be'hereinafter described.-

The cylinder D keyed to the spindle 98, is

arranged on the frame of the machine so that the journals of thespindle 98 are introduced intothe bearings 137 and 138 (Figs. 2426) and so that the toothed rim 103 engages with the toothed rim of the cylinder C.

Cylinder E.The cylinder E is similar to.

the cylinder B. Like the latter, it is provided with a semi-circular armor or casing.-

. E being tangent to the cylinder D at the moment of printing of typographic plates, must be adapted to be moved away from the cylinder D when no typographic printing is to be effected. This movementis obtained by mounting the cylinder on a spindle with eccentric journals 139 (Figs. 19, 20 and 8 Fig. 8 shows the mounting of the spindle 139 of the cylinder E on the frame, and the mounting of the cylinder E on the spindle 139. The cylinder E, the hubs 140 and 141 of which are provided with brass rings 142 and 143, rotates on the spindle 139. This spindle is mounted in sockets 144 and 145 of the frame on eccentric journals 146 and 147 rotating with a slightamount of friction in the sockets 1.44 and 145. The longitudinal movement of-the spindle is prevented'by the screw 148 and the washer 149. The lever 150 keyed to the end of the spin dle, enables the spindles 139 to berotated, and the cylinder E to be eccentrically moved either for bringing it into a tangent position with the cylinder D when it is desiredto make a typographic impression, or for moving it away when that kind of printing is not required. This lever is held by tighten ing the thumb nut 151 when the lug 152 of the lever comes to engage with the screw threaded rod 153 secured to the boss 154 of the frame. i

Movement of the cylinder C.The cylinder G mounted in the manner described, must be brought into a position tangential to the cylinder B and the cylinder D. In various cases,more particularly when it is desired to use the machine merely for typographic printing, itis-advisable to do away with the tangential arrangementof the cylinder 0 relatively to the cylinders B and D, which is effected by raising the cylinder G along the axis'aa (Figs. 10 and 11). This rising movement of the cylinder is brought about in the following manner. The bearings 82 and 83 are provided with lugs 155 arranged in cages 156 provided in the bearings or brackets 84 and 85. These lugs are pivoted to the connecting rods 157, the other ends 158 of which engage with the eccentric journals 159 of the spindle 160. The said spindle which passes through the machine in the direction of its width, is mounted in the tru'nnion'pins 161 of the frame. To the end of the trunnion or journal 159 is keyed a lever 163 by means of which the spindle 160 can be rotated, andin that, way the trunnions 159 can be raised eccentrically and the bearings 82 and 83 raised by means of the conncctin rod 157, and consequently the cylinder a .so.

. lnicing meeha'nism F'for intaglz'o plates-- This'mechanism'comprises an inking box 164, an inking cylinder 165, a distributing roller 166, a distributing table constituted by the cylinder 167 and two contact rollers 168 and 169. The inking cylinder is mounted on a spindle 170 rotating in the sockets 171 and 172 arranged at the narrow sides 17 3,and 174 of the inking device. The distributer 166, the distributing table 167 and the two contact rollers 168 and 169 are mounted in 'the sockets of a fork-shaped cast iron frame consisting of two sides 175 and 1.76 connected together by a cross-bar 177 cast with them. The fork-shaped frame is mounted on the spindle of the inking cylinder in sockets 178 and 179,. so that the frame can oscillate about the spindle170 when it is desired to do away with the con- I inder B provided with intaglio plates. T

that end, one of the levers 180 is lowered. The ink box is mounted on brackets 181 and 182 of the frame of the machine. It is secured to the said brackets by means of bolts 183. This inking box is provided inside with an inking oted at each of its ends to rods I84 and 185.

The contact between the inkinglmife and the inking cylinder is regulated or adjusted by means of a set screw 186. The distributer 166 is faced with gelatin; the journals of the said distributer rotate in eccentric rings 186 and 188 provided with handles, which are adjusted-in the sockets 189 and l 190 of the frame. The eccentric rings enable the roller to be regulated or adjusted.

so as to bring it into aposition tangential to the inking cylinder 165 and to the dis tributing cylinder 167. It will be easy to remove the distributor by taking out the eccentric rings 187 and 188. The distributing cylinder is mounted on a spindle 191, the journals of which rotate in the sockets 192 and 193. The contact rollers 168 and 169 are provided with gelatin. The journals 194 j and 195 of the said contact rollers rotate in eccentric rings 198 and 199 with handles. These eccentric rings are mounted in other eccentric rings 200 and 201 (Figs. 13 and 14).

The mounting or arrangement of the contact rollers in the double eccentric rings 198 and 200 has for its object to enable thev rollers to be regulated or adjusted, on the one hand, with the distributing cylinder 167 and on the other hand with the surface of the plates engraved in int-aglio and mounted on the cylinder B.

By turning the handle 204 of the eccentric ring 200 in the direction of the arrow 205,

the contactroller will be brought nearer to the distributing cylinder 167, and by rotating the handle 206 of the eccentric ring 198, the contact roller will be brought nearer to the surface of the cylinder B. By manipulating the handles 204 and 206, it will he, therefore, possible to regulate or'adjust the contact rollers in a suitable manner. This adjustment having been eflected, the ring 200 will be locked by means of the screw 207, and the ring 198 by means of the screw 208 which will be tightened after having brought the pawl 209 into engagement with the shoulder 210 of the ring. .As shown in the drawing, it will be easy to remove the contact rollers 168 and 169-by removing the eccentric rings 108.

For disengaging thecylinder B when putting in place the armor or casing provided with the plates to be printed, the inking device will be raised by pivoting it about the spindle of the inking cylinder on which it is mounted, this being done by means of the levers 180. The whole will be held in the raised position by means of the hook 211 knife or palette piv by means of'the bolt 212 and engaging with the tooth 213 arranged on the socket 199 of the fork-shaped frame; -When the inking mechanism is brought back into its contact position, the sides of the frame will rest on stops 221 suitably adjusted. Operation of the inking device, Figs. 10, 11 and 12.The spindle of the inking cylinder is provided with a chain pinion 214 Fig. 11 engaging with a chain 215 and rotating the inkingcylinder. As will be seen from its arrangement, it is easy to take off the chain pinion 214 for replacing it by a smaller or larger pinion, and consequently for obtaining different speeds for the inking device and. for the contact rollers which are used in the diiierent cases, as will be hereinafter explained under the title inking and wiping of plates in intaglio The spindle 170 of the said cylinder is provided with a pinion 216 engaging with the intermediate pinion 217 mounted on a journal 218 secured to the sleeve or socket 219 of the frame, so that the intermediate pinion 217 rotates loosely on the said journal. The pinion 217 engages with the pinion 220 keyed to the spindle of the distributing cylinder 167 which it drives. roller 166 and thetwo contact rollers 168 and 169 are driven by their contact with. the inking cylinder and the distributing cylinder 167.

Wiping device G for plates in Figs. 10, 11, 15 and 16.-ln Fig. 16 is shown in plan the spindle 242 by means of which the rings 233 can'be operated. The wiping mechanism -comprises eight wiping contact e'ntaglio,

rollers 221, eight wiping cylinders 222 and eight scrapers 223. The eight contact rollers are constituted by hollow iron mandrels 224 (Fig. 16) closed at both ends by means of disks 225 provided with journals or spindles 226. These mandrels are first of all covered with a layer of hardrubber 227. They are turned and covered with a layer of soft rubber 228, then with a new layer of hard rubber, and polished. These rollers are mounted by placing the journals into rings with handles 229, arranged in eccentric rings 230 with nuts mounted in the sockets231 of the rims 232 and 233.. The rims or casings 232 and 233 are mounted on circular hearings or projections 234 east with the frame, on which bearings they can-rotate; These rims are provided with three lugs 235 with oval holes with which engage fixingscr'ews 237 and afterwhich they are turned,

which enable the socketed rims 232 and 233.

to make a circular movement. The rimsin question are each provided with two teeth 238 and 239 Fig. 10 which leave between them hollows 240 in which are placed eccentrics 241 (Fig. 10) arranged at each end'of the transverse spindle 242 (Fig. 16) mountcontact with the Wiping cylinders 222. It

will be understood at once how the said wiping contact rollers are regulated or adjusted: They are first adjusted so as to bring them into tangential contact with the plates arranged on the cylinder B, by means of eccentric rings 230 provided with nuts. This adjustment having been obtained, the screws 245' (Figs. 10 and 11) will be tightened, and they will fix or look the-eccentric rings 230 with nuts. Then the contact of the contact rollers with the wiping cylinders 222 is ob-.

tained by manipulating the lever 244 which, by producing a circular movement of the rims 232 and 233, will bring the wiping contact rollers into contact with the wiping cylinders 222. This result having been obtained, the rims 232 and 233 will be locked by tightening the screws 237.

The wiping cylinders 222 are constituted (Fig. 16) by hollow steel tubes 246 closed at both ends by means of disks 247 and 248. They are mounted on spindles 249, and their surfaces are turned and perfectly polished. These cylinders are mounted on the machine in the following manner. 'Tae journals of the cylinders are arranged at one side on rings 250 with handles (Fig. 16) mounted in the sockets 251 of the frame. These rings are held by 'means of a spring clamp. 252.

. tates.

Atthe other side, the'journals provided with a driving tappet 253, aremounted in the ring 254. This ring is mounted in the socket 255 of the frame. On the inner end 256' of the ring in question, is mounted a chain pinion 257 which rotates loosely on the ring and is held by a collar in which it roon its face with two driving teeth 259 between which the tappet 253 engages. I. The rotation of a wiping cylinder is, therefore, insured by the rotation of the chain pinion 257. As will be seen from its arrangement, it will be easy, after having removed'the wiping cylinders, to take off the pinions257 from the wiping cylinders and to replace them by other pinions of different dimensions by means of which it will be possible to obtain for the wiping cylinders, and consequently for the wiping contact rollers, different speeds which may be useful in various cases, as will be hereinafter explained under the title: Inking and wiping of plates in intaglio.

In order to obtain a more regular wiping, and in order to insure a regular wearing of the blade of the scraper, the wiping cylinder The pinion in question is provided is given a reciprocating transverse movement produced in the following manner: The ring 254 is bored axially and a bolt 261 engages with the hole without friction'the said bolt 261 being screwed to the end of the journal 249 of the wiping cylinder. This bolt can, therefore, rotate'in the hole 'of the ring 254. w-ithout driving the said ring. If the ring 254 is given a reciprocating movement, the same movement will be produced on the cylinder. This movement is obtained by the rotation of the said "ring at a low speed, as will be hereinafter explained, by means of the chain pinion 262 keyed to the end of the ring. As the ring 254'is provided with a helical groove 263 with which engages the stud 264 screwed into the socket 255 of the frame, the movement of rotation of the ring 254 will produce the movement of advance or reciprocating movement of the wiping cylinder.

The scrapers 223 are constituted by a castiron right-angled part 265 ,closed at both ends and forming a trough or cup. To the said trough or cup is secured a suitably sharpened blade 266 WlIlCh IlS brought into thorough contact with the wiping cylinder.

The mounting of the scrapers is effected at one side by means of pins 267 which are screwed into the sockets 268 of the frame, and at the other side, by means of pins 269 which pass through the sockets 270 ofv the frame and are secured in the said sockets by means of screws 2711. The ends of the scrapers are provided with lugs 272 on wiping cylinders to be regulated.

As shown in the drawings, the wiping contact rollers; the wiping cylinders and the scrapers can be easily taken off, which enables the surface of the cylinder B to be disengaged, and facilitates the putting in place of the casing carrying the plates, on the cyl- 'inder B.

Driving, Fig. 11.The rotation of the machine is produced by the rotation of the spindle 276 (Fig. 17) produced as will be hereinafter explained when describing the driving mechanism. In Fig. 17 is shown the fitting of the spindleon the frame and the mounting of the driving pinions on the said spindle. The spindle 276 which passes through the machine, rotates in the rings 27 7 and 27 S of the sockets 279 and 280 of the frame. The said spindle carries a toothed pinion 281 engaging with the toothed rim of the cylinder B and produces the rotation of the said-cylinder. The toothed rims of the cylinders B, C, D, E engaging with each other, it follows that the rotation of the cyl-

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