US2178069A

US2178069A - Rotary intaglio printing press

Info

Publication number: US2178069A
Application number: US141018A
Authority: US
Inventors: Curtis S Crafts
Original assignee: GOSS PRINTING PRESS CO Ltd
Current assignee: GOSS PRINTING PRESS Co; GOSS PRINTING PRESS CO Ltd
Priority date: 1937-05-06
Filing date: 1937-05-06
Publication date: 1939-10-31
Anticipated expiration: 1956-10-31

Description

Oct. 31, 1939. c. s: CRAFTS 2,178,069

ROTARY INTAGLIO PRINTING PRESS Original Filed May 6, 1937 8 Sheets-Sheet l Wiggfw Oct.- 31, 1939. c. s. CRAFTS 2,178,069

ROTARY INTAGLIO PRINTING PRESS Original Filed May 6. 1937 8 Sheets-Sheet 2 $8 i a m N Ii I' N J: 9w; v; l g

g T & g 1| i I N a w n a Q l mi T g: kw H- a -1 G {H I *3 INVENTOR 1* fink."

"A ORNEYS Oct. 31; 1939. c. s. CRAFTS ROTARY INTAGLIO PRINTING PRESS Original Filed May 6 1937 8 Sheets-Sheet 3 w E N Rv O 8 E/ENTOR QY M Oct. 3.1, 1939 c. s. CRAFTE.

ROTARY INTAGLIO PRINTING PRESS Original Filed May 6, 1937 8 Sheets-Sheet 4 QVENTOR m X XTTORNEYS Oct, 31, 1939. v c. s. CRAFTS ROTARY INTAGLIO PRINTING PRESS s Sheets- Sheet e Original Flled May 6, 1957 lfiENTOR TORNEYS Oct. 31, 1939. abs. CRAFTS ROTARY INTAGLIO PRINTING PRESS 8 Sheets-Sheet 7 Original Filed May 6. 1937 VENTOR TTORNEYS Oct. 31, 1939. c. s. CRAFTS v 2,178,069 I ROTARY INTAGLIO PRINTING PRESS Original Filed May 6. 1937 .8 Sheets-Sheet 8 g QQVENTOR ATTO RNEYS Patented Oct. 31,1939

PATENT. OFFICE ROTARY INTAGLIO PRINTING PRESS Curtis S. Crafts, Oak Park; Ill., assignor to The Goss Printing Press Company, Chicago, Ill., a

corporation of Illinois Application May 6, 1937, Serial No. 141,018 Renewed April 4, 1939 23 Claims. (Cl. 101-157) The invention relates to new and useful improvements in inking mechanisms for rotary intaglio presses, and more particularly to such improveinents in the means for mounting and op- 6 erating the doctor blade.

Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by practice with the invention, the same being realized and attained by means of the instrumentalitie's and combinations pointed out in the appended claims.

The invention consists in the novel parts, constructions, arrangements, combinations and improvements herein shown and described.

The accompanying drawings, referred to herein and constituting a part hereof, illustrate one embodiment of the invention, and together with the description, serve to-explain the principles of the invention.

Of the drawings:

Fig. 1 is a fragmentary vertical transverse section taken on the line'l-I of Fig. 2;

Fig. 2 is a fragmentary side elevation looking at the upper part of Figs. 1, 3 and .4 from the right, substantially in the direction of the numbered arrow 2 in Fig. 1;

Fig. 3 is a fragmentary vertical transverse section taken on the line 3--3 of Fig. 2;

Fig. 4 is a fragmentary vertical transverse section taken on the line 4-4 of Fig. 2;

' Fig. 5 is a fragmentary top plan, on an en-. larged scale, of the left-hand end of the mechanism, showing part of the reciprocating means for the doctor blade structure, substantially in he direction of the numbered arrow 5 in Fig. 1;

Fig. 6 is a detached detail plan of the pivoted support for the doctor blade;

, Fig. 7 is an enlarged section Fig. 8 is a fragmentary side elevation of the left-hand end of the mechanism, looking at Fig.

i 5 from the bottom of the sheet, and showing the drive for the-reciprocable structure;

Fig. 9 is a fragmentary elevation of the fountain wall and the base structure on which-thedoctor. blade mechanism is reciprocably supported; I f Fig. 10 is an enlarged sectional detail on the Fig. 11 is an enlarged sectional detail on the line ll-ll of Fig. 9; and g Fig, 12 is an enlarged sectional detail on the line l2-l2 of Fig. 8.

66, Objects of the invention are to provide a doctaken on the line tor blade mechanism constructed and capacitated to operate reliably and efficiently under modern high speed,- high quality requirements, including such operation with quick-drying inks and with closed fountain constructions, if and when de- 5 sired or required; to provide novel multiplex independently and conjointly operable agencies for controlling the position and action of the doctor blade to attainbest results under differing conditions and requirements and for various kinds of work; to provide structure, mounting and operation whereby multiplex positioning and regulation of the blade can be effected and maintained without being disturbed or affected by or during the printing operations, as well as to effect I other objects which are set forth hereinafter or will be apparent to those skilled in the art through practicing the invention or otherwise.

To this end, in'a preferred embodiment, herein exemplified, various cooperating structures and 0 principles are embodied, some of which will be briefly and generally here indicated. A supporting and guiding means is firmly supported in fixed position upon the press frame, upon which a carriage carrying the entire doctor blade mech- 28 anism isreciprocably mounted. All the devices and agencies for variably positioning and regulating the doctor blade are. mounted on this carriage, and thereby their regulation and their op. j eration are not disturbed orafiected by the re- 0 ciprocatory movement, a feature which carries added importance in fast running presses. The

carriage supporting and guiding'means are primarily variably positionable relatively to the press frame both as a unit or entity and also with re- 35 spect to various points along the support and across the press and are then firmly fixed in the desired position.

The various blade positioning and regulating means mounted on the carriage comprise mech- 40 anisms for varying the position of the blade to and from the design cylinder, which mechanisms acton the blade ata plurality of points along its length. The aforesaid mechanism is mounted on ap'ivotally supported blade carrier, and that carrier is angular-1y positionable to swing the blade into and out of operative position with the design cylinder, andalso to nicely regulate the pressure of the bladeon the cylinder, this latter function being effected and refined by the employment of finely regulated resilient pressure means. The preceding general description, and the following detaileddescription as well, are illustrative and exemplary but..,are not restrictive of the inven-- tion. '5

Referring now in detail to the embodiment of the invention illustrated by way of example in the accompanying drawings, an intaglio printing couple comprising a design cylinder I and an impression cylinder 2 are shown journaled in the vertical side press frame 3, the web w running through the impression. The supporting structure for the doctor blade carrying, regulating and actuating mechanism as exemplarily illustrated and described is adapted for use with the closed fountain type of intaglio press, as well as with other types of intaglio presses. The supporting structure for the doctor blade mechanism is connected with and carried by the vertical side frame members 3 of .the press and also by the vertical wall 4 which is part of the ink fountain structure.

and extends across the press, being fixed to and carried by the side frames 3 of the press.

The. doctor blade mechanism, as here exemplified, comprises a stationary support or base 10, supported by the wall 4 and by the press frames 3, and is variably positionable relative thereto by suitable screw-threaded means (Figs.

' 1, 2, 9, 10 and 11) With the closed type of fountain shown, this support i may comprise an upwardly and inwardly inclined wall, which constitutes part of the fountain closure, and with other types of intaglio inking mechanism, this preferably vertically, upwardly and inwardly inclined structure will serve as a guard or splash plate for the ink. In accordance with certain features of the invention, supporting and guiding means are carried on and fixed to the support l0, and the entire doctor blade mechanism is reciprocable on this supporting and guiding means. Said embodied form of reciprocable mechanism comprises means for regulably positioning the I doctor blade toward and away from the surface of the design cylinder, means for relatively positioningthe doctor blade angularly with respect to the design cylinder, and means for exerting r'egulable yielding pressure on the positioned doctor blade, together with other facilities and adjustments- The support i0 comprises a long plate II which extends entirely across from one vertical side frame of the press to the other, and has at either end vertically disposed, rearwardly extending plates or flanges abutting on and supported by the press side frames, as later more fully described. The plate II is inclined inwardly from its bottom edge toward the upper edge thereof, the latter being relatively close to the design cylinder and the doctor blade being mounted adjacent thereto. To provide for height regulation of the supporting member Hi, there are provided inthe bottom part thereof (Figs. 1, 3, 9 and 11), a plurality of vertically-disposed, undercut, channeled slots I4, formed in outwardly-projecting bosses l formed in the support iii. In the undercut channels l4 are shouldered nuts [6, into which are threaded bolts 11, which bolts are carried in cylindrical, outwardlyprojecting bosses I8, formed on the outer vertical wall of the cross frame member 4. These height or level regulating mechanisms are spaced apart at intervals across the press so as to furnish reg- -ulation and support at a relatively large number of points. 4

As previously mentioned, at either end of the support I0 are vertically-disposed plates or flanges 22" and 23, extending backwardly from the inwardly curved member II, and adapted to fit within and against the inner sides of the vertical press frames 3. These

plates

22 and 23 are the lower undercutedgeof the guide 43.

connected to and supported by the side frames by suitable supports provided with height-regulating means (Figs. 4, 9 and As embodied, vertically-disposed, undercut guides 24 rest against the inner faces of the press frames 3 and are held in place by tap bolts 25, threaded into the side frames 3. The

plates

22 and 23 have at their outer edges vertically-disposed pro- Jections 21, lying within the undercut channels of the members 24. Tap bolts 28 are threaded into the projections 21 of the

plates

22 and 23. and extend through longitudinal slots 29 in the guiding supports 24, which gives the desired height-regulating and; supporting means. Further supporting and height-regulating means may be provided, and as shown a plurality of lugs II are integral with and project from the outer face of the Support l0 (Figs; 1, 3, 4, 8 and 9). Into each of these lugs is threaded a bolt 32, the bottom end of which rests upon the flat top 33 of the frame member 4.

On the outer face of the support I0 is formed a long and relatively narrow horizontally-disposed pad or supporting surface 38,.integral with which are a plurality of outwardly-projecting,

like base of the support l0. Supported upon and fastened to the pad 33 by suitable means, such as countersunk bolts 40, is a beveled-edge or un-.

dercut guide 43, which has a shoulder 44 running along within its upper edge, the shoulder fitting over the upper horizontal surface of the pad 39, whereby the guide piece 43 has hanging support on the pad 38.

The carriage which supports the entire doctor blade mechanism, including the various regulable positioning means, is mounted to reciprocate upon and along the guideway 43, and asembodied a flat plate 49, which may be considered as the doctor blade carriage, has its inner surface 50 contacting the surface 5| of the guide 43 with a slidable fit. The plate 49 extends upwardly and inwardly as at 52, and has a beveled surface 53 in sliding engagement'with the upper undercut edge of the guide 43. At its lower, horizontally-extending edge, the carriage 49 has an inwardly-extending flange 54 extending inwardly past the undercut guideway 43, and in connection therewith means cooperating with the undercut lower horizontal edge of the guideway 43 to hold the carriage closely to the guideway while permitting the free sliding'reciprocatory motion. As embodied, a longitudinal bar 56 (Figs. 1, 3 and 4) lies within the flange 54 of the carriage, and has a beveled top edge which has sliding fit with To permit assembly and also adjustment of these parts, the bar 56 rests on the inner ends of a plurality of bolts 51, which are threaded into the flange 54, and a series of screw-bolts 58 extend through the carriage and are threaded into the bar 56 with slotted connections to hold the bar firmly in adjusted position. 1

In addition to the position regulating means for the support previously described, as embodied, the doctor blade is mounted on the slidable carriage 49 so as to be variably positionable to and from the design cylinder l to compensate for cylinders of different sizes, and also to be variably positionable angularly to regulate the pressure on the cylinder, and to also exert a regulable yielding when so positioned. As embodied, this is effected by a straight line movement of the blade carrier upon its carriage and to' and from the cylinder. Accordingly,two bracket-like integral parts 6I and 62 are formed on the outer Y face of the carriage ,9 and extend outwardly therefrom: The upper end of themembers H and 62 form two flat, laterally-extending plates or supports 63 and 64 (Figs; 1, 2, 4, 5 and '7), and the doctor blade carrier is supported on these

plates

63 and 64, means being provided for moving the doctor blade carrier, inwardly and outwardly relatively to the carriage 49 to regulably vary the position of the doctor blade edge with respect to the design cylinder I. In cooperation with said mounting of the doctor blade carrier, means are provided for effecting regulable annular movement of the blade carrier, as will be later more fully described.

Each of the

supports

63 and 64 has on its upper surface a transverse, undercut .guideway, 66

and 66 respectively, each of these guideways.

0 having on its outer side an undercut bar 61, forming the outer side of theguldeway, and held in place by screw-bolts 60. Slldably mounted in .the

respective guideways

63 and 66 are

bases

69 and 10, having sliding fit within the undercutguideways, and formed integral with and extending upwardly from the

bases

69 and 10, respectively, are pedestals 1| and 12, which constitute. bearings upon which the doctor blade carrier 93 v threaded onto the end pf the shank to hold the stud 80 in position. The rod 19 is screw-threaded into the

respective bases

63 and 10, and the pedestals H and 12 for the doctor blade carrier are thus accurately positionable along the guideways 65 and 66.

f The embodied form of the doctor blade carrier 93 comprises a longitudinally-extending bar having long narrow bottom seat or seats 34,-and Y 50 a rear upwardly-extending flange with rear edge seats 95 upon and within which the immediate doctor blade support is removably mounted. The pivotal mounting for the doctor blade carrier comprises a frame, integral with'and extending backwardly from the carrier 93, said frame having rearwardl; extending

reaches

96 and 91 and a cross piece 98. Extending downwardly beneath the outer ends ofthe frame plate 93 are integral webs IOI on which are formed, respectively, hubs I02 (Figs. 1, 2, 3, 5, 6 and '7). Mounted in hubs I02, respectively, are stub shafts I01, held in place'by lock nuts I08 screwthreaded on the inner ends of the stub shafts. 0n the other side of-hubs I02, spacing collars I09 are formed integral with the shaft. The outer end of each of the shafts I01 is journaled in an antifriction bearing'IIO, carried respectively in the pedestals -1I and "previously described. A

retaining nut HI is screw-threadedon the outer end of each shaft-I01 and the housings in the respective pedestals are closed by flat end plates Means for movingf the doctor blade carrier 33 about these pivotal mountings, as here exembracket web I25.

tures in their outer ends. Journaled, respeca horizontally and transversely disposed shaft I 2|, journaled at either end on hubs I22 and I23, formed on the lower end of the projecting brackets 6| and 62, and also journaled in a central hub I24 formed on a central rearwardly projecting bracket I26 projecting rearwardly from the middle part of the carriage 49. The means for effecting the required minute and accurate angular movement of shaft I2I comprises a hub I29, fixed to the shaft by a key I30. Integral with the hub I29 is a gear sector I3I, with which meshes a worm gear I32, fixed on a shaft I33, which shaft is journaled at either side of the worm gear I32 in bearing hubs I34 and I36, formed on and extending laterally from the A handle I36 is formed on the outer end of the shaft I33. The connections from the gear mechanism Just described to the pivotally mounted blade ,carrier, as here embodied, comprise a plurality of compound or toggle levers actuated by said gear mechanism and having resilient, screwthread regulated connection to the pivotal blade carrier. Fixed to shaft I2I near either end thereof are arms I and I42, and pivotally connected to the outer ends of these arms at I43 and I44, respectively, are arms I45 and I46. The connecting structure from these arms to the doctor blade "carrier 93 comprises a pair of rearwardly extending arm I41 and I48 formed at one end of the cross member 96of the pivotally supported blade carrier, and a pair of rearwardly extending arms I49 and I50 formed at the other end of said member 98, these pairs of arms having apertively, in these pairs of arms I41, I48 and I49, I50 are tension or spring-pressure adjusting means, each comprising a cylinder I6I pivoted by means of outwardly-projecting trunnions I62, journaled in the apertures in the respective pairs of arms. The upper portion of each of the cylinders' I6I is internally screw-threaded, and in threaded engagement therewith is an externally screw-threaded head I61. A rod I68 has its lower end I69 nested in a bore I10 formed in the outer end of arm I46 or I46, respectively, and is held by a pin I66. The rod I60 extends loosely within the cylindrical housing I6I, which is pivotally mounted on one of the pairs of arms as just described.

Fixed to each rod I66, within its cylinder .I6I, is a seat I13 upon which rests a compression spring I14, and the upper end of the spring is nested within the hollow bottom end of the head I61, and the spring is in compression between the seat I13 and an anti-friction .bearing'IIS within the head I61. The head I61 is rotatable to regulate the pressure exerted by springs I14 upon the doctor blade carrier. Limit regulating or determining means are provided for the mechanism just described, said means as embodied comprising limit screw I8I screw-threaded into flanges I02 formed, respectively, 3 on the outer sides of the arms I4I and I42, the ends of these screws abutting on flanges I83 projecting from the inner faces, respectively, of the brackets SI .and 62. Other limiting determining devices (Figs. 2, 3, 51 and 7-) comprise stop screws I91, threaded into flanges I89 extending outwardly. from the outer faces of the webs IN, the ends of these screws abutting on lug" or flanges I99 extendinginwardly from the inside faces of the pedestals II and". This mechanism, it will be seen, serves to move the doctor blade bodily into and away from operative position with the de- 2 sition upon the blade support 20l, the holding sign cylinder,-and also to very nicely regulate the pressure of the blade at various points along the cylinder.

In the embodied form of mounting for the doctor blade and its carrier (Figs. 1, 3, 4, 5 and 7), the doctor blade 200 rests upon and within a seat formed in a longitudinally-extending barlike support 20i which rests upon the seats 94 of the carrier as already described. The support 201 is firmly but removably held in its place on the carrier by a plurality of clamping fingers 202, resting on the top surface thereof and upon the tops of a plurality of projections 203 formed on the rear side of the carrier 93. Screw-bolts 204 pass through the clamping fingers 202 and are screw-threaded into the projecting portions 203 of the carrier, and are held in place by locking nuts 205. A longitudinally-extending bar 209 rests upon the blade 200 to hold it firmly in pobar 209 being clamped at either end to the support 2! by clamping screws 2l0.

Means are provided for supporting the part of the doctor blade extending beyond the support 20! and holder 209, and as embodied a longitudinally-extending angle plate 2I6 rests upon the holding bar 209, with the outer edge thereof bent downwardly and pressing upon the upper surface of the doctor blade 200. The plate 2i6 is held in position by screw-bolts 2l'l passing therethrough and screw-threaded into the holding bar 209. Cooperating with the foregoing mechanism is a resilient sealing and backing blade 2I8, which is seated firmly between two clamping plates 2l9 and 220 extending along, and supported upon, the top horizontally-extending edge 22l of the supporting frame i I, the support 2i9 being fastened to the frame by screwbolts 222, and the plates 220 being screw-fastened to the support 2I9.

In the embodied form of means for reciproeating the carriage {9 and the entire doctor blade mechanism supported thereby (Figs. 2, 5, 8 and 12), an arm 233 is pivotally connected by an anti-.friction-bearing 234 to a stub shaft 235 fixed to and extending from a lug 236, integral with and extending from a supporting plate 231, which plate rests against a pad 238, formed on the end of the carriage 49 and fastened thereto by screwbolts 250. At its other end, the arm 233 extends outwardly through an opening in the side frame 3 of the press, and at its outer end has crank connection 25E! with a shaft 254 journaled in a housing 255. Fixed on shaft 254 is a worm wheel 256, with which meshes a worm 251 having bearings 258 and 259 in the housing. Fixed to the worm shaft 260 is a pinion 26!, which is driven from suitable gearing 262.

The invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and without sacrificing its chief advantages.

What I claim is:

1. A rotary intaglio inking mechanism including in combination a guide mounted in fixed position on the frame structure, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means mounted on the carriage for regulablymoving the doctor blade about its pivotal bearing to vary its position angularly with respect to the design cylinder. v

2. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means mounted on the carriage,

includinga worm gearing, for regulably moving the doctor blade about its pivotal bearing to vary its position angularly with respect to the design cylinder.

3. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means mounted on the carriage, including a resiliently operating device, for regulably moving the doctor blade about its pivotal bearing to vary its position angularly with respect to the design cylinder.

4. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means mounted on the carriage, including a screw-thread regulated resiliently operating device, for regulably moving the doctor blade about its pivotal bearing to vary its position angularly with respect to the design cylinder.

5. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means for regulably moving the doctor blade about its pivotal bearing including a compound lever and a resilient connection between'the lever and blade carrier.

6. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means for regulably moving the doctor blade about its pivotal bearing including a compound lever, 'a resilient connection between the compound lever and blade carrier, andscrewthreaded means for regulating the resilient pressure.

'7. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means for regulably moving the doctor blade about its pivotal bearing including a worm gear, a compound lever moved by the worm gear, and a connection from the compound lever to the blade carrier.

8. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and means for regulably moving the doctor blade about its pivotal bearing including a worm gear, a compound lever moved by the worm gear, and a resilient connection from the compound lever to the blade carrier.

9. A rotary intaglio inking mechanism including in combination a guide mounted in fixed position on the frame structure, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprocable carriage, and. means mounted on the carriage for regulably moving the doctor blade about its pivtal bearing, said means including a plurality of spaced apart members engaging the doctor blade carrier at diiferent points.

10. A rotary intaglio inking mechanism including in combination a guide mounted in fixed position on the frame structure, a carriage reciprocably mounted on the guide; a'doctorblade carrier pivotally mounted on the reciprocable carriage, and means for moving the doctor blade about its pivotal bearing including a shaft, a plurality of I mechanisms spaced apart along said shaft and connected to the blade carrier at spaced apart points, and means for accurately moving and holding said shaft.

1 1. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade carrier pivotally mounted on the reciprqcable carriage,. and means for moving the doctor blade about its pivotal bearing including a shaft, a plin'ality of compound levers fixed to and spaced apart along said shaft and connected to the blade carrier at spaced apart points, andmeans for accurately moving and holding said shaft.

12, A rotary intaglio inking mechanism includ ing in combination a-guide,acarriage reciprocably pivotal bearing including a shaft, a plurality of compound levers fixed to and spaced apart along said shaft and connected to the blade carrier at spaced apart points, means for accurately moving and holding said shaft, and screw-threaded regulating means between each compound lever and the blade carrier.

13. A rotary intaglio inking mechanism including in combination a guide, a. carriage reciprocably mounted on the guide, a doctorblade carrier pivotally mounted on the reciprocable carriage, and means for moving and positioning thedoctor blade carrierabout its pivotal bearing including a compound lever, a pivotally mounted connection between the lever and carrier including a spring exerting pressure between the lever and carrier, and means for regulating the amount of r the spring pressure;

upon which said carrier is 1 blade substantially throughout its length, a carrier constituting a support beneath said blade clamping members substantially throughout their length, pivotal supports mounted on said carria ge and upon which said carrier is directly supported, and means mounted .on the carriage for moving said carrier about its pivotalsup-ports to regulably press the doctor blade against the design cylinder. 1 I

16. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably-mounted on the guide, longitudinal members engaging and clamping the doctor bladesubstantially throughout its length, a carrier constitutiv 1 ing asupport beneath said blade clamping members substantially throughout their length, pivotalsupports mounted on said carriage and upon which said carrier is directly supported, me'ans for moving said pivotal supports and carrier toward and away from thedesign cylinder, and means mounted on the carriage for moving said carrier about its pivotal supports to regulably press the doctor blade against the design cylinder.

17. A rotary intaglio inking mechanism including in combination a guide,aca'rriage reciprocably mounted on the guide, longitudinal members engaging and clamping the doctor blade substantiallythroughout its length, a carrier constituting a support beneath said blade clamping memhers substantially throughout their length, a plurality of spaced-apart arms fixed to and extending rearwardly from said pivotally mounted carrier, and means mounted on said carriage'and connected to said arms for moving said carrier about its pivotal supports to regulably press the doctor blade against the design cylinder.

18. A rotary intaglio inking mechanism including 'incombination a guide, a carriage reciprocably mounted on the guide, longitudinal members engagingand clampingthe'doctor blade substantially throughout its length, a carrier constituting asupport beneath said blade clamping members substantially throughout their length, pivotal supports mounted on said carriage and upon which said carrier is directly supported, a pluabout its pivotal supports to regulably press the doctor blade against the design cylinder.

19. A rotary intaglio inking mechanism including in combination a horizontally extending guide, a carriage reciprocably mounted on the guide, longitudinal members engaging and clamping the doctor blade substantially throughout its length, a carrier constituting a support beneath said blade clamping members substantially throughout their length, pivotal supports for said carrier mounted on said carriage above said guide, and means mounted on the carriage and acting to rotate the carrier about its pivotal supports to regulably press the doctor blade against the design cylinder.

20. A rotary intaglio inking mechanism includingin combination-a horizontally extending guide, a carriage reciprocably mounted on the guide, longitudinal members engaging and clamping the doctor blade substantially throughout its length, a carrier constituting a support beneath said blade clamping members carrier mounted on said carriage above said guide, and means for moving said pivotal supports relatively to the carriage to move the doctor blade toward and from the design cy1inder.

21. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade and doctor blade carrier pivotally mounted on said carriage and means for moving the doctor blade toward and away from the design cylinder, said means comprising atoggle lever having one end thereof'pivotally mounted on saidcarriage and the 'otherend thereof pivotally connected to the doctor blade carrier. 22. A rotary intaglio inking mechanism including in combination a guide, a carriage reciprocably mounted on the guide, a doctor blade and doctor blade carrier pivotally mounted on said carriage and means for moving the doctor blade 75 I substantially throughout their length, pivotal supports for said,

toward and away from the design cylinder, said means comprising a toggle lever'having one end thereof pivotally mounted on said carriage and the other end thereof pivotally connected to the doctor blade carrier and means for moving said toggle lever and regulable means for limiting the movement of the toggle.

23. A rotary intaglio inking mechanism including in combination a guide, a carriage reciproca- 10 bly mounted on the guide, a doctor blade and