US926850A - Printing-press. - Google Patents

Description

E.' l0. CARTWRIGHT. PRINTING PRESS. APPLICATION FILED MAY 18,71906.

, E. 0. UART-WRIGHT.

PRINTING Pnnss. VAPIPLIOA'ILION FILED' HAY 18, 1908.

Ptena July e, 1909.

-4 IIEETI--IHBBT 2.

WW A

anhin,

y11.0. GARTWRIGHT..

Patnted July 6, 1909.

4 sums-SERIA.

l NI

(Imagna,

. UNITED STATES PATENT ERNEST o. GAETWRIGHT, or SPRINGFIELD, oHio,` AssIGNon or ONE-HALF To LoUI'sFIsiIER,

or WEST MILTON, OHIO. y

PRINTING-PRESS.

Nef-agosto.

Specific-ation o! Letters Patent.

Patented uly 6, 190.9.

Application led lay 178., 1906. Serial No. 317,589.

and useful Improvements in Printing-Presses of which the following is a specification, reference being had therein to the accm panying drawings. y

This invention relates to printing presses, and, more particularly to that class of printing presses known as platen presses.

'l ve invention has for its object to provide a construction whereby'a platen press'may be produced which will be simple and veryl .com act, in which the lim ression will be firm and uniform, whichy wil be rapid in its operation, and which will be adapted for use in connection with either an automatic sheet feed or an' automatic roll feed without requiring any alterations in the other portions ofthe ress.

A vrlot 'ese and other ends my invention consists\ in certain novel features which I will ow proceed to describe, and will then particularly point out in the claims.

In the accompanying drawings, Figure 1 is .a side elevation of a structure embodying my invention in one form, portions thereof being broken away and shown insection; Fi 2 is a central vertical sectional view, ta (en on the line :t x of Fig. 1 and looking in the direction of the arrows; Fig. 3 is a sectional view, taken on the line yy r/ of Fig. 2 'and looking in the direction ofthe arrows; Fig. '4 is aside elevation of the'upper portion of the machine, partly broken away, illustrating the throw-oil' mechanism; Fig. 5 is an enlarged detail sectional view, taken on the line z z of Fig. 3 and looking in the direction of the arrows; and Fig. 6 is a detail top plan view of one end o f the sheetfeeding mechanism.

' In 'the said drawings, `in which I have shown a preferred embodiment of my invention, the press is shown as supported in a frame composed of two similar parallel up right plates 1, connected by rods 2 at the top and bottom. Each of these side frame members 1 is provided at its central portion with an o ening 3, having vertical lateral edges 4, whic form guideways lor slide blocks 5, which support and actuate the combined form bed 'and inking drum. A vertical movement of reciprocation is imparted `to the slide blocks in any suitable manner, that which I prefer being by means of the construction shown, in which each slide block is shown as rovided with a horizontal slot 6, into whic extends a crank pin 7, eccentrically mounted in a gear wheel 8. Each gear wheel 8 is supported on a stud shaft 9, secured in a bridge piece 10 which extends across the correspondin Opening-3 of the frame. The gear whee s 8' are driven by means f'gear wheels 11, secured on a sha-it 12 which is mounted in suitable bearings in the side frame members 1. One of the gears 11 meshes with a pinion 13 on a driving shaft.

14, lto which power nay be applied in any suitable manner. The shaft 14 may also be provided with a' suitable driving pulley 15.

The form bed and inking drum are coinbined in a single structure, the former being indicated by the reference numeral 16 and the latter by the reference numeral 17. They are preferably integral or formedin a single piece, being cast in the-form of 'a cylinder, hollowed for lightness and lattened on its upper side to constitute the form bed. This casting is secured to the slide block 5 by means of screw bolts 18, passing through the slide blocks and screwing into the ends oll the casting. Said casting is provided at each end with a cylindrical trunnion 19, and onv these trunnion's are loosely mounted the revolving carriers2() which sup )ort and actuate the form-inking rollers. .lach of these carriers is in the form of a segment of a wheel or disk of greater diameter than the inking drum, and they are given a constant rotary motion while the press is in operation to cause them to travel laround the form bed.

ment. lAround each sprocket wheel 21 thereA passes a sprocket cham 22, said chain also passing aroundfa sprocket wheel 23, eccentrically mountedon the -shaft 12. The s rocket wheels 23 are secured to hubs or slieeves 24 on the shaftV 12, in order to effect a satisfactory" connection between said drum and the on the rods 37 at the other end, and said reds l -at'the endet the downwardnlovement ofthe 65.. nking drum. and 'the inkitlius supplied to the "l ses,

sprocket wheels and shaft. 'ine eeeentrieity I of the sprocket Wheels is equal to the travel I o1" the slide blocks 5, and is so arranged that I the sprocket chains 22 are kept at an even tension and the carriers 2G are rotated at an I even speed as the slide blocks reciprocatel The form-inking rollers, indicated by the reference numeral 25, are preferably three in I number, and are supported in the carriers 2() I by having their shafts 2G extended tlirm'igli. radial slots 27 in the carriers,.\.vliieh latter. -e a provided with springs 22%, mounted in recesscs With which the slots 27 comnninicatdsaid springs bearing on elle ends ol the shaft 26 to press the rollers 25 radially inward into proper Contact with the inlring drum and With the type or other .impression surface on the form bed. The ends of the inlring drum are rabbeted` or cut away, as indicated at 29, l and the forni bed is provided with laterally'- upwardly extending ribs or flanges 30, and on the Ways thus provided ltravel the bearing rollers or wheels 31 with which the forni roller shaftsfZ` are provided, by means elI which` the relations ofthe rollers to the print ing and inkdistributin-g' surfaces are properlyT maintained` v The cylindrical surface of the inking drum 17 is supplied with ink from fountains 32 of. I any approved type, located on opposite sides I ol' sa1d druiii'at the irent and rear of the ma-A l chine, and provided with supply rollers 33, which may be actuated. in any suitable manner. The ink is transferred from the foun-` tains tothe drum 17 by means of ductor rollers 34, mounted to rotate inthe free upper ends of vibrating arms 35, he lower ends of which` are pivoted upenn suitable sup-- port, preferably the shalt 1.2', en whicli they are loosely mounted. The arms 35. are, pressed normally inufard 'toward each other by ine-ans of springs 36, coiled around rods 37, which are pivotally connected to' the arms 35 and which pass out through sui able apertures in the brackets l-willen support the fountains The springs bear 4against e the brackets at one end and against collars 3Q are provided with stops or heads 40 at their outer ends to limit their inward movement The ar rangement of these parts is such that, when the form bed and inlging drum move down# Ward, 'the inling drumc onies into Contact' with tlie ductor rollers Wh i )liess latterare in their uppermostpositie n I,rest to each other, and, passing down' alrdlbetv/een them, forces them downward dlglitivard 'away from each otlienand towardn "l (l V1elint-ains, at"

liifmovement continues-'until :'t ie cluster rollen brought' into contact with the fountain r tained, since thelorni bed and prin ratchet Wheels and gripper'rings 'Jnaticsheet feed, and their connor' ese.

ductor rollers is transleriml le 'the drum during the 'first portion ol' movement olf' aid drum, during;-A ri. the, said rolls are held against the d the springs 36 and roll over the sur@ the same as they approach each otlic the rise el tile drinn. lfllhen the hea the rods come into' coni.;` l the due-tor rollers erackcts Je? tionary, and the form bed and i continue to .move upward a di l cient to permit the forni inkl pass between the inlfinf; drum rollers when :st-idl drum in tion. The ductor rollers in with. vibrating distributingr rol ed on the arms 35 in contact 34, and actuated from these lat'` tributing rollers being of ang,` a struction.

The hraclrets 3S may be .la slotted, as indicated d2, to bolts 43 by which the 'fountains cured thereon, thus permitting ladjustment el thc fountains on sah. relatively to the inlring drum. f ilu ployment of two fountains, the pressm. used for printing in two colors, the lou' being located opposite different halves c inking drum, and the latter beingpr with a central r' ',uinl'creniial gn. arate 'the d buting surfaces or the tir:

cient inliis.

ln connection ,vitlrtlie verticali reeiffre eating forni bed, which is always n1 M in a horizontal position throughout nu i of'movenient, l employ a normally iixed or stationary platen 4.5, located above the lei bed., with its under face, which receives tix"- tyrnpan, held firmly in lniriaontal position, exact parallelism with the torni b l, so tliaf a square impression contact a jas en face of the platenare .always 'garan r each other during the printing op The platen is provided with a sleeve apperpertion, byrneans ci which .b v secured toV a normally stationary shaft 47.,

'which shaft issupported its ends in the l side members l ol' the frame. sion surface 48 of the platen iseoefrensive in length with the bodyo the casting of which The in inres it forms a nar-t, being therefore also eeexteni sive in length With the supporting'sieeve 46,

and the trarne members l are 'located f-lc the ends of said castinff, vonly a rel .lively .narrow space. being left between the casting; .and frame members .for the moin ig of tire on of ,this construction, 'the pl is sup rted soclose' its vends as to p l' any gingfoi" the same troni inequali r the 'rression surfaces, thereby maintaining the l .llelisi'n ofthe platen and forni bed',

Althoughl the platen is normally station'- ary, provision is made lfor inverting the 'guideWays-56` on the inner faces 'of' the frame members 1. These looking pins are so arranged that, when-the platen Iis in vWorkingposition, the lower endsmay Abe engaged in notches or recesses 51 in the upper side ofthe shaft 47, thereby holding the same against rotary motion and maintaining the platen in properhorizontal position. By drawing 'the pins 49 upwardl and disengaging them, the` shaft 47 may be released so as' to permit the platen to be turned up inthemanner described. Provision is also made for moving..

the platen vertically aslight distance for'the purpose of throwing'olif the impression when necessary. T o this end, the shaft 47 Aterminates at its ends in reduced bearing trunnions 52, each of said trunnions rotating in a vertically sliding cross-head or box 53,

mounted in a rectangular aperture-54 in the corresponding frame member 1. -Thevcrosshead 53 is of the same Width as the aperture 54, so that the lateral vertical sides 55 of said aperture consitute guidevvays for said head,

' Which is of less height'thang'said aperture, so

that it may move'vertically therein: In the front of the'cross-head 58 there is locatedin the aperture 54 a sliding box .56, of a height equal to the height ofthe aperture 54', so that the horizontal top and-bottom margins 57 of said aperture constitute guide4 'margins for the said plate or box, .which is of less Width than the aperture 54, so that it is capable of sliding horizontally therein. Vithin *the box 56 there is 'mounted to rotate a vsleeve 58,

in which the corresponding trunnion 52 of the shaft' 47 is eccentrically mounted..

` From this construction it will beseen that when the sleeves 58 are rotated in their boxes 56, the shaft 47 will be moved vertically, th arrangement of the guide platesbeing such as to maintain the axis'of said shaft' always inthe same vertical 'plane throughout its range of movement, thereby preventing lateral displacement ofthe platen. This vertical movement lof the platen lis in line withy the Avertical locking bolts 49,- 'so that these latter will move upward when .the

platen is raised'to throw. oii the impression.

Thus this movement of the platen in a straight line'permits the use of lockingv bolts having long straight guiding. and supporting surfaces in the main frame, .so as to iirnilyihold. the platen against movement When `engafcged i. .of suc-h bolts so supported, Y

therewith, .the use being impossibiewaae ine-parents a,

lateral or swingingmovement during the o" eration of thethrovt'forl.;` In order to permit the sleeves 58 to'bereadily operated simultaneously, s'aid sleeves' are provided on' their ne'ctedl by klinks 6'()- to arms 61, projecting from a/rock shaft 62, extending transversely lof the machine at the-top thereof and controlled by a hand lever 63. This rock shaft takes the place of oneof thetie rods'2 ofthe frame, and in order to enable it to holdfthe side plates 1 in position, it is provide'dwit'h collarsfZ-a Awhich bear against said plates".`

Since the platen is stationary, it is obvious that the'press is adapted' foruse with either' an automatic sheet-feeding mechanism, jas

shown, or an automatic roll-feeding mechanism, feeding the paper in "a continuous Web from a roll., In the present 1nstance,'I'have shown an automatic sheet-'feeding niechan-` ism which is particularly adapted and..le-`

vised for use inconnecti-on With the structure. which I have' heretofore described.' This feeding mechanism issupported upon those portions of the shaft 47 which lie between tions form trunnions for the same. l of thesetrunnions therey ismounted asta- .tionary rand-carrying ring64, annular 1nv theplaten and frame members 1, Which por- On one form and secured to the shaft47, While thev other trunnion has mounted loosely thereon,

Iso as torevolve onthe shaft 47,a pawl-carrying ring 65. These rings are held in place Y .between .the frame members 1 and the ends of the'platen by means of spacing rings 66.

TheA annular surface of each pawl-'carrying ring forms -a bearing for a gripper carrying ring 67, which is free to rotate therein, and which may be held against lateral displace- .ment by an annular ilange 68 on the pawlcarrying ring The stationary'pawl-carrying ring' 64 is provided with a peripheral re- 'ccss 69, in `which isjmounted a spring-actuated 4detent pawi 70. The movable paw]- c-arrying ring 65 is `provided with a corresponding' peripheral recess 71, in which a spring-actuated feeding raul 72 is located. The gripper-carrying ings 67 are provided with teeth 73, correspondingin number and .radial location Wit-h the grippers andadapted y to be snnultaneousiy .engaged by the detent and feeding' pawls. The movable ring 65 has an oscillatory movement impai ted 'to it by connection lWith a reciprocating art of the mechanism already desciibed', ltliisjcon-l inectionbcing preferably effected by means of'al rod 74, the upper end of Whichis riveted at T 5 `to the outer face of the ring 65, while it-s lower end. is pivc/ted 'ath76 '-'tov one of the slide blocks The ring. 65'Whicli carries the feed pawls is `therefore moved a quarter oi'ja' revolutionin one direction 'during the "upwardfiuoveinent of the forni -bcd and its lii'lewl-)loelaigandis then moved backward aV ion ment of the detent pawl 70 with one of thel teeth 73 of the gripper' ring 67 -which is mounted on the stationary pawl-ring G4. During the succeeding downward movement of the form bed, the pawl-ring 65, by reason i of the engagement of its pawl 7 2 with one of the teeth 7 3 of the gripper ring 67 which is mounted on said pawl-ring 65, rotates j both paWl-rings in the4 direction indicated by n, it* being understood that the fare connected together by the grlppersin` les the arrows, advancing them a `quarter turn, gripper rings such a way as to move in unison. The gripper rings are thus moved intermittently or advanced a quarter turn at each downward movement of the form bed. It is desirable that this feeding movement of the gripper rings should not begin simultaneously with the downward movement of the form bed, in order that the sheet which has just received an impression should not begin to move until after the form is clear of the. sheet. To eifect this result, the connecting rod 7 e is constructed in two parts, connected by a slipjoint or lost-motion connection which will permit the lower portion to move downward somewhat with the form bed before its movement is communicated to the upper portion and to the feeding-pawl ring. Any suitable connection may be employed for this purpose, that shown comprising a slot 7 5a in one of the portions of the rod, with which a projection 76a on the other portion engages. l have also shown the lower portion of the rod 74 as Offset laterally to permit its connection Vwith the slide block 5, the frame member l being grooved on its inner side, as indicated at 77, to accommodate this offset portion when the connecting rod moves upward.

As already stated, the gripper' rings 67 are connected to move in unison by means of the grippers. In the present instance, I have shown these latter as raised somewhat fromv the peripheries of the gripping rings by means of' blocks 78. On these blocks are mounted supporting plates 7 9, which extend across from one gripper ring to the other7 and the gripper rings are further connected by cross bars 8() which are mounted on the forward portions of the plates 79 and also extend across from one gripper ring to the other. These parts are secured in position by screw bolts 81, which passdpwn' through the cross bars 80, the plates 7 Qand the spacing blocks 78, their lower ends being threaded into the body portions of the gripper rings 67. A`Over the rear edgeof each supportingplate 79 there extends a radially'-niovable upward @sasso gripper bar 82, guided by means of radially arranged fingers or projections 83 at its ends, which extend inward through guiding apertures 84 in (uitwardly extending' fianges S5 on the gripper rings 67. These gripper bars 82 are thrust normally inward by springs 86, secured to the cross bars 80 and extending rearward over the gripper bars. When free to move inward underthe action of. the springs 86, the gripper bars 82 clamp the leading or forward. edge of the sheets against the supporting plates 79. The gripper bars are forced radially outward to receiveor release the sheets by means ol' pins 87 vand 88, extending inward from the frame members 1 and acting as cams upon the inner ends of the guiding fingers 83 of the gripper bars, in whose path they /lie Thus, in the position of the parts shfnvmthe gripper which lies at the end of the feed board 89 has its gripper bar thrust outward by means of the pin 87, so as to form an opening between said bar and the supporting plate '79 through which the edge of the sheet .may be introduced from the feed board. fit the same time, the gripper next following has its gripper bar forcedoutward by the pin 88 for the purpose offreleasing the printed sheet. In all other positions of the parts, the gripper bars are moved inward so as to grip the leading edges of the several sheets. In front of each cross bar 8O there is located an abutment 90, to arrest the Yfront edge of the sheet as it is fed forward from the feed board, and this abutment is adjustable to arrest the front edge of the sheet at the desired point by means of screws v91, extending through the cross ybar 80.

The feed board 89 is located at the top of the machine, above the gripper rings, and is hinged at its outer end, as indicated at 92, so that its inner en d is free to rise to permit the passage of the grippers and so that the feed board may be swung out of the way when the platen is inverted in. making ready. The feed board is lifted for the passage of the grippers by means of fingers or projections 92a, which lie in the path of the gripper ring cams 99 hereinafter referred to, and are actuated by them.

Since the sheets are held by the grippers at their'forward edges only, provision 1s made for supporting themso that the remainder of the sheets will not fall down into the space between the gripper rings,4 but will be proporly supported throughout their travel. To this end, Iv provide a supporting drum 93, lying between the gripper rings and supported from the collar or hub 45 oi' the platen by means of arms or plates 94. This drum A'ex-v tends irom a point adjacent to the impression surface 48 of the platen on one side to a similar point on the` other side, `and its 'top and side portions are preferablyrlattenned to reconoinize space. Since it. is carried bythe plat-en, it turns with thislatter when inverted i for making ready, so that access to the platen is not prevented by the drum, Thesheets being thus supported on one side by thev d rum 93, are further supported .when in vertical position after leaving the'feed board by an upright guard 95, arranged adjacent to 'the'slde of the'druni and supported from the rod 96, which is mounted in vibrating arms 97, pivoted on a rod .98, mounted in the frame members "1. The guard' 95 is preferably composed of two fingers which 'are ad- ]ustable'longitudinally on the rod 96, so as to beplaoed imposition to support the lateral margins of the sheet. The arms 97 are held by spring-s 97, coiled'o'n the rod 98, against 'the peripheries of the gripper rings 67,' which lattery are providedl with cam-surfaces 99 which permit the arms to move inward and old the'guard 95 in proper position to retain he sheet afterthe gripper which carries it as passed. As the next gripper approaches,

V"fthe, cani surface 99 .moves the arms 97 out the-'impression is held against the under 'face i 48 ofthe platen by means Vof la. frisket 100,

connected by a-rod 101 tol armsl?, pivoted on ay rod 103 mounted in the frame members: -1. The-arms 102` are pressed toward the gripper rings by a spring 102, coiled on the rod' 103,- the gripperrings being provided with cams 104, inthe path of which the arms 102-lie," and which serve to swing said armsf and the frisket outward to permit t'lie'passage ofthe gripper-s, the frisket returning after each gripper has passed beyond the platen. AOn the side `opposite to that on which the guard 95 is located is placed an apron 105adjustably coni'iected at 106to a rod 107,-carried by arms 108,1oosely mounted on the rod 103. The upper end of this apron is provided with a deflecting plate 109, which is so adjustedas to liejustbelow the rear or lower edge of the printed sheet after it has been advanced one` step :from the platen.

n When this position ofthe sheet is reached,`

'the cam or pin 88v opens the gril'iper, and the ized as to nis-ure a perfect impression. 3 After sheet is discharged by gravity, heilig directed by the defleoting plate 10.9 so as topass outward from the machine, being discharged externally into asuitable delivery box or other g receptacle. The arms 108 are held by a s ring 108V1v against the gripl'ier' yrings, and t eir free ends lie inthe path ol' the calin surfaces 99, whicli permit the apron to move inward' after the lsheet has' passed, and which swing the apron outward to permit the passage of the grippers.

`the inspection ofthe feeder. v It wil The operation of-the press as a whole will be readily undenstood from the preceding descripti'bn. ln the first place, it will be noted that the` sheets to be printed lie upon the feed board and are fed to the machine face upward, or, in other words, with that face which is to receive thel impression eX )osed to l also be `;noted that the sheets are discharged in the 'saine position, to wit, face upward, yand that such discharge is to a point outside the press and free from the mechanism thereof,- where the sheets are readily accessible for inspection and removal.l

Assuming thatV the parts are' in the position shown, and following the sheet through the press, it is first fed into the gripper which is in position at the 4end of the feed board, between the supporting plate 79 and gripper bar y 82, its forward edge being brought against the abutment plate y90, which has been adjusted ytothe proper place to correctly position the sheet. This feeding ot the sheet to the gripper takes place while th'e gripper is stationary, during the upward movement of the form bed. The succeedingdownward movement of-the form bed moves the sheet one quarter of a revolution, lit being supported during this movement by 'the drum93 and vheld in position atthe end thereof between saidydrum and the guard 95. Beforethis movement begins,` the gripper is held open to receive the sheet by the cani 87,

and the gripper closes. to grip the sheet as soon as sai movement be ins and the pro- .jections 83 pass clear of sai( cam.` Upon the next downward movement "of the form hed the sheet is fed forward another 'quarter revolution under the platen, where it is held in position by the frislzet. duringsthe upward Vinoineinentof lthe form bed, and receives the impress from the type or printing surface thereon. As already stated, it will he observed that theplaten and forni bed are held inrigid parallelism throughout the stroke of the latter, so that the printing surface squarely meets the paper and the i-iiipressioii isi'bound to be even and correct, even if one or the other of the meeting surfaces is above or below its normal position. supported so closely to its ends` that displacement thereof by tlie.spi'iiigiiig of the connections.between the platen and frame is avoided. The construction is thus so orga-nthc impression, and afterthe form bed has reccdcd somewhat from the platen, the sheet is ni'ovedfanother quai-ter revolution to final position, with its rear or following edge above the apron 105, so that, when the grip- The platen is I ing rollers time and space enough to pass oncev over said bed. This relatively short travel of the form bed renders the machine more compact and substantial and increases the.

speed and number of impressions. Furt rermore, although the bed reciprocates to and from the platen, there is no necessity for arrestingl its movement at any time, since the inkinpT rollers reciprocate with the bed and are doing their Work while the bed is in motion. Therefore, tlze speed of the press is not diminished, either by the necessity of a. dwell or delay in the movement ofthe bed, or an extension of the range of movement of the movingI part of the press inl order to give time 'for the inliing` rollers to accomplish their Work. By rea-son of the employment of the ductor rollers, the form-hiking; rollers receive their' ink only from the inlring drum, no ink being taken directly from the fountains onto the form-inking rollers. The reciproeation of the inking drum along with the form bed enables me to utilize the inling drum as a means for opera-ting the ductor i rollers to bring the latter into/contact with i CAD the fountains, and also to rotate. said ductor rollers in such a Way as to effect av proper transfer of the ink from the fountains to the inlring drum. In conclusion, itwill be observed that the arrangement of the parts,

With the platen above the form bed and the.

. forrnbed reciprocating vertically` in a relatively short path, further contributes to the compactness of the machine by reducing its horizontal dimensions, so that the actual floor space occupied by theu machine is relatively small. y

As already stated, one of the advantages of the construction described, involving a stationary platen at the top ofthe machine with a downwardly directed impression surface, is that the Ina-chine may be readily used either With an automatic roll feed, or with an automatic sheet feed, 'as hereinbefore described; feeding mechanism hereinbefore described be omitted or detached, there will then beprovided a press so organized thataril automatic i roll feed may be readily mounted upon' the upper part thereof to conduct` the web' from. the roll under the platen. Such al1-,antomatic roll feed has been devised by me, andv will form the subject matter of, a separate application.

l Wish it to be understood that l do not desire to be limited to the exactl details of con-v Forit will be seen that 'if the sheetf esaso struction shown `and described, for obvious modilicf-rtions vwil l occur to a person slsilled in the art.

llaving' thus fully describiuil my invention, what l claim as new and desire to secure by Letters latent,

l. ln a platen prinlineipress comprising' a frame, a normally stationery shaft mounted in the side members of said frame, a platen rigidly secured to saidy shaft, guideivays in said frame, slide blocks mounted to reciprocate in said guiden-ays te ward and away from seid platen, a rotating' shaft, mea-ns actuated by said rotating shaft for reciprocatingl said slide blocks, a form-bed rigidly secured-to said slide blocks parallel with said platen and adapted to reciprocate in a right line toward and away from said platen, means for permittinethe actuation of saidinst-mentioned shaft to move said platen out of alinement ivith said form-bed, and means for inkins the `form carried lby said form-lied while said forni-bed is in motion.

Zln a platen. printing' press, a platen and a coml 'ned form bed and inltine drum, 'said platen and forni bed l'eingr in constant par-l allelism Whenin operation and one of said members reciprocating in a, riQglit line toward and from the other, plates journaled at the ends of said forni bed and inlrine` drum and provided in their inner faces with substantially radial grooves, inkingY rollers'slidal'ilyv mounted in said `grooves, vsprings-,vs within said grooves beyond said rollers and engaging With said rollers to move the same toward said combined form bed and inlring drum, and means for rotating,- said plates to carry said rollers around Said form bed and inking` drum, substantially asdescribed.

3. In a platen printingpress coinprising a frame, a normally stationaryplaten supported therein, guidenays in 'said frame, slide blocks mounted to reciprocate in said Itruide-v Ways ytoward and from the platen and having.

transverse slots therein, gears supported from said frame, a pin eccentrically mounted on veach of said gears and 'engaging the slot in one of said slide blocks, means for driving 'said gears, a form bed rigidly secured to said' slide blocks and .parallel with said laten, and means for inking the form carried bedrwhen said bed is in motion.

l. In a platenprinting press ofthe character described,'a frame provided with guide-: Ways, slide blocks' mounted in said guide- Ways, av revolving shaft, incansactuated `from said-shaftfor reciprocating the slide blocks, a combined form bedl andinking' drum hav'Z ing end trunnions secured to said slide blocks, roller carriers trnount'ed to rotate' on said trunnions, sprocket vrhe'elsV iounted on said trunnions and connected t saidroller carriers, the combined Width of saidy roller carriers and sprocket Wheels beingsubstantially equal to t 1 e space'between said combined form bty said.

i combined' form bed and -inkin vided with inking rollers revo ving around the saine, in combination withl a fountain lodrum acting by its contact -wit cated adjacent to thepath of the -inking drum, and a ductor roller `ieldingly held in the path of the inking rum said inking ii said ductor roller to move the 'same into contact with the fountain, substantially as described.

' 6. ln a platen printing press of the char? acter described, a reciprocating non-rotating drum pro-- combined form bed and `inkin vided with inking rollers revo ving around tliesame, a fountain'loca'ted adjacent to the path of said inkingdrum, and pivoted springactuated arms rovided with a ductor roller yieldingly hel infthe `path ofthe inkixig drum, said arms being arrangedto swing the ductor roller over into contact with the fountain when the inking drum pushes said roller out of its path, substantially as described.

7. 4In a laten printing press of the char-4 acter described, a reciprocating non-rotating combined form ,bed and inking drum provided with inking rollers revolving around the same, in combinati,

inking drum, and pivoted s ring-actuated arms provided with ductoi' ro 1ers yieldingly supported in theA patli of the inking drum,

Vacter described, pa platen with fountains loi cated on opposite sides of the'path of said inking.' drum passing downward between said ductor rollers,forcin `them apart and'l moving them outwardly into: contact with the fountains, substantially as described A8. I In a platen printingp'ress of the charac,` ter described, a frame-in combination with alaten having Vtrunnione supported in saidv raine'and provided'vvith recesses, and locking bolts mounted to slide longitudinally iii said'A frame to engiage said recesses, subsi-itanlv tially asdescribe v, s ,l

9.l In aiplaten printing `ress offthe-charwith lockingrecesses, a frame having longitudinally y siding locking bolts mounted theieinto" engage said recesses, anda throw- 4 off mechanism actingv between the trunnioiis and frameto move the platen in the line'of movement of the locking bolts, substantially its described.

y 10. Ina laten printing press lofthe char-- acterV descr'i ed, a platenhavin trunnions,'.

and a frame having vertical an vhorizontal uideways, in combination with cross-heads tting the vertical guideways and truiinions, boxesv fitting the horizontal guide/Ways, sleeves mounted to rotate in' said` boXes',vthe truniiions being eecentrically mounted in said sleeves, and means for simultaneously rotating saidsleeves, substantially as desciibed'.

In testimony whereof, Iaiix my signature in'pi'esence of two witnesses. l

' ERNEST O, CARTWRIGIIT.

' lVitnessesz' E. HAG IiwiNn MILLER.

Se aving, trumiions.

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