US824190A - Printing-machine. - Google Patents

Description

No. 824,190. I PATENTED JUNE 26, 1906. S. L. MORGAN. PRINTING MACHINE.

APPLICATION FILED MAY 11. 1905.

.3 SHEETS-SHEET 1.

v ill 57050):

No. 824,190. 'PATENTED JUNEfZB, 1906. v

S; L. MORGAN.

PRINTING MACHINE.

A-P-ELIOATION FILED MAY 11, 1905.

3 SHEETS-SHEET 2.

PATENTED JUNE 26, 1906.

S. L. MORGAN. PRINTING MAGHINEv APPLICATION FILED m n, 1905 UNITED STATES PATENT OFFICE.

PRINTING-MACHINE..

Specification of Letters Patent. Application filed May 11, 1905. Serial No. 259 872.

. Patented June as. 1906.

To all whom it may concern:

a citizen of the United'States, residing in Rutherford, in the county of Bergen and. State of New Jersey, have inventeda certain new and useful Improvement in Printin Machines, of which the following is a specii i cation. K The invention relates more particularly to that .class of printing-machines known as plate-printin presses, in. which the impression is made from an engraved plate.

I An important object of the invention is to rovide for the passage over the plate of a on wiping-surface and for maintaining such su ace incondition for efficient service.

Another 'object is to provide a simple inking mechanism.

A further object is toprovide, operate, and maintain an effective polishing-surface, with means for presenting it to the plate.

Another important object is to provide a throw-off or stop motion adapted to be operated either automatically after each impression or by hand; and generally the object of the invention is to rovide a machine adapted to be driven by and or power, in which the operations of inking, wiping, and polishing necessary in conditioning the plate for an impression and also the operation of makin such impression shall be automatically an Successfully performed and which shall be economical in first cost and in space occupied and also in operation and maintenance.

The invention consists in certain novel features andarrangements of parts and in de-.

' tails of construction by which the above ob= jectsare attained, to be hereinafter described. The accom anying drawings form a part of: this specification and show a preferred manner of carrying out the invention.

I Figure 1 is a side elevation of a machine of the D-rollertype constructed in accordance with myinvention'- Fig. 2 is a corresponding view of the op osite side, showing the Fig. 3 is a plan view,

from below, showing, a portion of the inking mechanism. Fig. 5 is a cross section on the line 5. -5 in 2, showing a portion of the aipingmechanism on a larger scale. Fig. 6

"'is" an end View, partly in vertical section,

showing a portion of the inking mechanism. 7 is a side elevation of a portion corre sponding to Fig. 1. Fig. 8 is a diagram, partly in vertical section, showing the D- ately adjacent parts. a vertical;

v p I I roller and the arrangement oflthewipingand Be it known that I, STEPHEN L. MORGAN,

section, partly in side elevation-,l showing the clutch and a portion of its operating mechan ism. Fig. 11 is a corresponding rearielevatron. Fig. 12 is a front elevation of anotherg portlon o the clutch mechanism, and Fig. 13.

is a side view of certain, parts of,the'. same mechanism. Fig. 14 is a vertical sectionon the hue 14 14 in the preceding figure; Fig.

15 is a vertical section on. a still larger scale,

showing a means of attaching theiplatietd the D-roller. l I

Similar letters of reference,

same parts in all the figures.-

The machine as illustrated is constructed. on the general lines of a D-roller plate-press.

The frame is marked A and' comprises two; N

vertical side frames A A provided with'legs.

and connected by suitable braces, .between. which is mounted a reciprocating bed or. plank B, supported on antifriction rollers; B B. Below the plank is a strong support ing-roller B mounted inbearings'in the sid frames, and above the plank isthe segmental. printing or D roller 0 on a shaft-C extending through boxes guided in the frame, supported on springs and adjustable toward and. from the upper face of the plankby screws- C Connected with the D-roller is ,a-iseg mental flange 0 corresponding tofgthegcoi z. tour of the D-roller and lying just: beyond the margin of the plank. This-flan ecarries an arm G, adapted to enga ean a justable lug B secured to the edge of the plank and-.initirfj ate the movement of the latter v against the v force exerted by a weight 13*, suspendedfrom a strap B attached to the rearend of the.

plank and running on a pulley B", mounted on the same shaft as the rear rollers B.

The driving-shaft E is supported in bear- IOO ings in brackets A extending: rearwardly, from the side frames, and carries at 'one end ,1

a driving -.pulley E and at: the. other a; sprocketwheelE from which motioniis com municatedthrough the sprocketwhain vE3? to. the sprocket-wheel O of-the-same diamter as the wheel E on the D-roller shaft.) A;

clutch Eton the driving-shaft permits-,tlre transmission of motion to 'be controlled,

.IIO

while the pulley E may run continuously.

' The engraved plate or analogous printingsurface (marked M)"is.mounted-'on,.the eonvex face of the Ii-roller, to which it curved to conform, andthecard or othensurjhme to be printed upon is placed onthe plant: and receives the impressionin its passage under the fi roller. I

The inking device preferably located horizontally in rear of the U roller above the plank, and the ink is supplied and distributed )y the reciprocations of the plank.

F 1s a fiat bar extending rearwardly from a transverse brace A between the side frames and supportedatthe rear end upon a spring A or other slightly-yielding support. On

the upper'faceof' the barnear'therear endare two horizontal disks or circular inhplates F" F arrangcdito rotateaxialiy. The I'GZLHDOSti has an ink-fountain Fflin which i is a roller F rotated byits frictionalycontact with the ink-plate (leliveringink thereto from, a supply in the fountain, controlled by ascraper FU The fonntau'i is supported by a bracket Fhattached to the bar F and overhanging the rear portion of the inkplate. In adjustable housings B onthe edges of the plank is carried a pair of ink-distributing rollers F F, Which'a't each igeoiproeai" onol' the plank traverse theinneeinleplatv 1 R one; theroller F, p ally tmverses the inkplate-FL,- talringinlr-t 1e eironi and delivering 0 to theplate F1 whcnde it is-carried by the roller E? to a revolving roller lin mu'i'ted :in

stationary bearin'gs onthe bar if, From the.

; roller F the ink thus uniiornil .tlistributed is taken by an os ivillating roller l miand prc- 5 sented at proper intervals tothe printing plate M. Tlhe-Inetiimof the roller F isinduced by the action of: one or more reinov-' disk C, carried by the ovcrhangingcnd 'ol the shaft C, and serving as a ra n working against an arm F on the swinging frame F, in which. the roller F is mounted. {lhe series .of blo'clrs holds the roller F 3 againstthe roller )h on the Filin oppositionto a spring F, win. 5 release of the. arni F swings the roller; into Contact w th the plate M Agroater or less number of blocks: eorrespoi irlingly increases or lessens thelength of the cam and enables the period. of contact oi' the i'olleiyi with the plate M to he ,changed. as required in accordance with the. lengthof the printing.

surface. I

stop by step, by .pawls F F carried by 0' z The nk-plates F F are. slowly rotated,

5 5 arms FF F and engaging the ratchet-wheels.

F F" beneath tlie bar-"F. .The reqnirel.

swing of the armsisnnpartedby the eon-tar:

-with the longer arn 'of a pinf l'l ,.earried by the plank, and the motion 1S transmitted 6o tothe shorter srmiFal nlr F The ink-plates are held againstlinoyeincnt(in the reverse direction by been F1" E i-on the under face of the bar F, as will be under;

stood.

6 5 My elgperiinents show that the delicate op and posit-e to the movement of the latter and also G is an oscillating hollow cylinder or carrier 5 for supporting such strip in itspassage.

mounted in rearward extensions A A of the side frames on a'shaft G, carrying ageari wheel G in mesh with an idle gear-Wheel G whieh isdriven by a gear-Wheel G mounted on a stud A on the side frame to which an 7 s oscillating motion isimparted by a link G pivoted thereto-at G and having-a lon'gitudinal slot g at its lower end, in which is loosely received a pin G set adjustably in. an arm C onthe shaft 0 of the D-roller. The arm C revolves Withjthe' D-roller; but by reason of the lostinotion provided for. by the slot 9 the desired oscillations of the gear-Wheel Gr are produced, the length of are described by such oscillations: being determined by v the distance the pin G is set from the shaft ,C The oseillating motionis tr'ansrnittedithrough the-train of gearing to the cylinderron carri r1;

G. The latter is cut throughtransverselyat.

one point 9 in its periphery, and adjacent to. V

Io'd

suchcut, on either side; thereof on the inner; face of the carrier, are fastened the ends of a strong band H or strip of heavy fa'brieextends through the-out, separates, Ianlows the contour of the carrier inoppr I rections until led away tangentiallyet tw points in the circumference.

.On leaving the front face of the ca'rriei bandllv passes behind a tightenenroller,

adjustably secured to the side frames A? tl'ience over a guide-roller ii in suclrirames, above the i' rolleryand under andp rtia around. asiinilar roller H immedi rear of the B-roller,fr.o1n which it pass the rear face of the carrier, being suhj 111 such passage to the pressureof a pa hib The latteris mounted in a swinging framexll and held against the band a spring ll? we cept at such times as the pressure is relieved, as will appear. I D D are rolls mounted within the carriin cross bars G extending diametrically of the end thereof, with their axes parallel with the sha 't G. One, the roll I), carrles Wound thereon a long strip D of muslin or othersuit able fabric, the end of which is passed through the cut g, along the outerface of the band I 1 throughout its length, except at the tightener-ioller ll, which it preferably passes on the o posite face, and enters the cut g and 1s attac ed to the takeup roll D The latter is equipped with a ratchet-wheel D operated by a pawl D on a lever D and subject to the force of a spring D"-. The lever is moved in opposition to the spring by contacting at each oscillation of the carrier with a pin A, set in its path in the extension A of the side frame A A pawl D mounted on the crossbar G holds the roll D against movin in the direction to unwind. The let-0d 'rol D is held during the wiping operation by the frictional engagement ofa wedge-shaped portion D?! of the lever D rwith a V-groove in the periphery of a disk D on the shaft of the roll D.

.The oscillating movement of the carrier is sotimed as to drag a long length of the strip D,backed by the stronger-band H, alon the face of the plate M at each revolution 0 the D-roller in the direction opposite to the movement of the plate, thus providing the long wipe desired. The return movement of the strip and band takes place after the passa e of the plate M and durin the period in w liich the cut-away portion 0 the Droller is presented to the strip and band. The tension of pad. H is relieved at the same period by the rearward swing of the frame H in which it is mounted, caused by a cam-surface 0 on a wheel C", to be described, striking the arm H, and thustilting the frame. During such return movement the take-up roller D is partially rotated by-its pawl D to wind up a short length of solid strip and draw from the roll D a slmilar short length of clean strip. The wedge D being at this time out of contact with the disk D allows the let-off movement to take place. By taking up a little of the soiled stripand correspondingly adding at the other end a small quantity from the clean sup ly the wipingsurfa'ce is kept at the same ength and in a uniform condition, just sufficiently soiled with ink to produce the most eflicient wiping, and is taken up before it has-become so filled with ink as to be imperfect in its action.

J J 2 are rolls mounted in the extensions A A in rear of the carrier G. The roll J carries a strip or wide ribbon J of muslin or other fabric similar to the strip D wound thereon, and J 2. is a take-up roll therefor operated by a pawl J 3 on a lever J subject to the tension of a spring J and actuated by an arm G on the s aft G of the carrier G. This ribbon J extends forward and downward from the roll J overthe face of the pad H under and partially around a roller H on the axis of the swinging frame H, and thence to the take-up roll J The ribbon J supplies fresh surfaces for the pad, removes a portion of the ink from the strip D, and also performs the function during the passage of the strip D over the pad of blending or spreading the ink taken up thereby in the wiping operation, and thus conditions the strip for better wiping and longer service.

The polishing of the plate following the wiping operation and immediately preceding the impression is effected by an endless belt K,

- running on a roller K at the upper ends of the side frames and driven by a sprocket-Wheel K on which runs a sprocket-chain K in mesh with a larger sprocket-wheel K, mounted on a stud A in the side frame A and carrying a spur gear-wheel K meshing with a larger spur gear-wheel C above referred to, on the shaft of the D-roller and carrying the cam C for the pad H.

The belt K is of strong fabric, as duck, and is stretched from the roller K around the rollers K K, mounted in a frame K pivoted at Ya within the side frames A A in front of the D-roller and arranged to, be lifted or swung on its pivots to ermit free'access thereto; The frame is he d in the lowered position by hooks A on the side frames, engaged with pins K on the frame. "The de- .sired tension is maintained on the belt by an iIgle roller K subject to the force ofthe springs The portion of the moving polishing-belt K between the rollers K K is in stron frictional contact with the plate M during t e passage of the latter and effectually polishes it by the rapid movement of the belt in the direction opposite thereto ready for the impression.

The belt K is filled with suitable material and conditioned for service before it is put in position, and the supply of whiting necessary to the polishing operation is applied by a roller L, mounted in a swinging frame L, pivoted at the upper portion of the side frames and oscillated by the contact with its arm L of a pin G on the carrier G. The frame L" is subject to the force of asprin L tending. to hold the roller L a ainst the bel i', K upon the periphery of the roller K, and the throw of the frame, due to the action of its arm and the pin G brings the roller L into contact with a mass of whiting L on a spring-platform L from which it takes up the small quantity required and transfers it to the belt,the spring L permitting the platform to yield to the pressure of the roller i A pad L, having a weight L", is mounted i serving to distribute the whiting and work it uniformly into the surface of the belt as the latter traverses beneath it.

It is important to the successful operation of the inking mechanism as herein shown that the plank make a complete recip'roca tion at each revolution of the D-roller irrespective of the length of the plate M, so that the ink-rollers F F may make the required traverse of the ink-plates F F, and it is also imperative that the plank be free to move at a rate determined by the peripheral travel of the plate in making the impression. These results are accomplished by the frictional contact of the flange C with a surface on an adjustable block B on the plank. The a insmw without inhalny (logmo ills istio is rcoi'tnocstsd at ",voluthm of the rlrit'ing-shslt E by it mm ll on s'hoaly of tho olut iah or u oonvoniont n 'ilwo noting upon an arm ,olstomling tipwonll from the rm; and of has and moving tho latter in opposition :3 spring P tending; to move it toward the N Vv'hon conditioned as shown dnw/in s, tho linger P? is so set that ml-lover oontiniiously engaged, the 7 f riding idly slong'tho outer face of the and tho niaohinovvfill you until the finis lroml by rotmotin si tho spring-(log by the mind of tho attsndsnt, permitting the foil to psitislly trototosnrl roloaso the clutch. 27y shortening the reach of the finger the lug N will osoopo therefrom at each revolution 'll o grooves Z) Z) along: tho edges of tut after the iunsrossion is mmlo, and thus stop plankalsorqooivotho B and t 5o housings the mzwl'iioo ontomstioally It is started El, vzu'rying thohos-iring for tho ink-i ilors '1 o ill) for anotherinipressionbyreversing the mi lor movement of tho lnunl-levsr and again on:

:tl pay l'equ roo foil roiuwo ino ioiiolf the plank Whilo umlnz' ho prossoz'o ol' tllfiphitflhllll making {no 11:

o F, and permit thesis ports to he adjust 'zinl and 1* :znvmrd, rotniiroil, v ng tho finger Thus the machine may (.ontinuoos rapid rotation is iinpsr't-wl to s run continuously if the chamotor of the the ink-roller:F" by a soul #:w-i'v'liool F on work is such asto permit the laying-0n and 2 romovsl of printed nmteriol between impros- 9o in soy automatically stop between imms to permit the removal mid laying isotod. In either sondition the my be stopped at the will of the :y grasping the hand-lever and mill rsloosingz the lottinilrom tho mlt, moshingn'ltli the n'vml lvlnto M Allin ,in it 1 sovoml inlsi'ollors may he al'lotsuffih to supply ink to tho Widest plate to list, roller F of a length oon- 0 amino "ois-toly to the Width oftllo "Nod portion of the plate to be printed,

0* '"il o tho mo 0 'zesson thot at saving in tho innountof i ml to ono oi LH effected and also less suroil to be taken up by the m 5 Another advantage of this v 's an increased uniformity in ok to the plate. For example, l'ollifi' he imbstitutsrl for the llmswn tliaxtthesuocoedf 1x0 to lJllllll u or'inorooso v tho clunl ,Jlfil'fli' uniformly by the accumulation low squareha "1 ,l: tlm-oon, oxco';; t'ing the swinging roller (lii'zglll 1U. mm 1'. F whioh by oontinmzlly losii'lg its ink in :1 oltho n-mihino 2. ham! or zono oors'irsponcling to the width of point, (soo Figs plot c hooomos gradually higher at each f, shlo of such zono. Thus conditioned the higher parts f 3'10 swinging rollor continue build up, whilo the low port or zone is F mm l'ron'i thosu'rl's oo of the revolving 12o and is [n'montod from remoiving its :tllOWzlNffO ol' ink. Tho employment o short rollsl' l l zssons or entirely obvithis diflioulty by supplying inl; only to tliom portions of the rollers F and F from which their again deliver it. r W llsting ozn'zior G provides the long ".qip'ing ilfll-lOli, and by taking-up a Very short 9 length of tho soiled strip after each impression at unifol-1nly-oonditioned Wiping-surface 13o 'lixml to tho lonloil for :11 suh n' ot to i? turn the rod 7 clutch and sto is insured until the strip is exhausted. My experiments indicate that with a wiping action of three feet itis amply sufficient to let off and. take up about oneeighth of an inch 5 for each impression, that short advance bemg enough to provide a sufficiently-clean Wiping-surface, especially when the cleaningribbon 'J is em loyed.

By reason the vertical arrangement of the and polishing mechanisms floorspace is economized and easy access to the D- rollerin applying a plate or for inspection is easily afforded, and the face of the plank on its return movement is nnobstructedly pre- I sented to the attendant for the removal and laying on of the material to be printed.

The spring A, supporting the bar F, provides the yielding quality necessary to the pro eizcontact of the ink-distributing rollers wit the ink-plates and the uniform distribution of the ink, and by operating the inking mechanism by the reciprocations of the plank this mechanism is simplified and favorably presented for supervision by the at- 2 5 tendant.

Although I have described the machine as designed to be operated bypower, the various mechanisms are easily actuated and the machine may be advantageously run by hand.

Modifications. may be made in the forms and arran ements of parts without departing from t e principle of the invention or sacrificing its advantages, and parts of the invention may be used without the whole.

Other means for inducing the long wipin action may be substituted for the cylindrica carrier shown and for inducing the short take up or advance of the wipin -strip, and the inking mechanism may be di erently located. For reasons of economy of space and ease of operation I prefer the whole as shown.

I claim 1. In a machine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, means for moving said strip in one direction in contact with said printing-surface, and means for returning said strip by moving. it in the opposite direction into positionfor a succeeding wiping operation by the soiled portion of said stri 2. In a machine of the character set fort a printing-surface, a wiping-surface therefor.

- in the form of a flexible strip, means for moving said strip in one direction in cont-act with 55 said printing-surface, and means for returningsaid strip by moving it in the opposite direction into position fora succeeding wiping operation by the soiled portion of said strip, means for said stripand presenting it to said rmting-surface, and means for controlling. the tension of said strip.

3. In a machine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, means for movinc said strip in one direction in contact with said printing-surface and means for'return ing said strip by moving it in the opposite direction into position for a succeeding wiping operation by the soiled portion of said strip, means for guiding said strip and presenting it to said printing-surface, and a cleaningsurface yieldingly presented to the soiled face of such strip during the movement of the latter.

4. In a machine of the character set forth, 7 5 a printing-surface, a wiping-surface therefor in the form of a flexible strip, means for moving said strip in one direction in contact with said printing-surfs,'ce and means for returning said strip by moving it in the opposite d'i: rection into position for a succeeding wiping operation by the soiled portion of said strip, and means for letting off a portion of said strip at one end and taking it up at'theother.

5. In a machineof the character set forth, a printing-surface, a wiping-surfacetherefor in the form of a flexible strip, means for moving said strip in one direction in contact with said printing-surface and means for returning said strip by moving it in the opposite direc tion into position for a succeedin Wiping operation by the soiled portion 0 said strip, and means for automatically lettin off a portion of said strip at oneend and ta ing it up. at the other.

6. In a machine of the character set forth, a printingrsurface, a wiping-surface therefor in the form of a flexible strip, means for moving said strip in one direction in contact with said printing-surface and means for returning said strip by moving itin the opposite direc tion into position for, a succeedi wiping operation by the soiled portion 0 said strip, and means for automatically letting ofi a portion of said strip at one end and taking it up 10 5 at the other after each wiping operation.

7. In a machine of the character set forth, a printing-surface, a wiping surface therefor in'the form of a flexible strip, means for moving said strip in one direction in contact with 1 1o said printing-surface and meansv for return-'- ing said strip by moving it in the opposite direction into position for a succeeding wiping operation by the soiled portion of said strip while out of contact with said print'mg-surface. 1 1 5 8. In a machine of the character set forth,

' a printingsurface, a wiping surface therefor in theform of a flexible strip, means for moving said strip inone direction in contact with said printing surface and means for returning I 20 said strip by moving it in the opposite direction into position for a succeeding wiping op- I eration by the soiled portion of said strip while out of contact with said printing-surface, and means for automatically lettin off I 2 5 a portion of said strip at one end and ta ing it up at the other during such return movement. A

9. In a machine of the character set forth, a printing-surface, a wiping-surface therefor 13o in the form of a weak flexible strip, means for moving said strip in one direction mcontact with said'printing-surface and for returning said strip by HIOVIIIO it in the opposite direction, and a strong 'exiblc belt moving with and supporting said strip.

10. In a machine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, a carrier to which the ends of said strip are secured, and means for moving said carrier alternately in opposite directions.

11. In-a machine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, a cylindrical carrier to which the ends of said strip are secured, and means for oscillating said carrier, whereby said strip is moved alternately in opposite directions.

12. In amachine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, a carrier, rolls mounted therein on which the ends of said strip are wound, means for moving said carrier alternately in opposite directions, and means actuated by'such movements for aue tomatically takin up a portion of said strip on one of said rolls and letting off a portion from the other of said. rolls.

13. In a machine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, a cylindrical carrier, rolls mounted therein on which the ends of said strip are wound, means for oscil lating said carrier and thereby moving said strip in opposite directions, andmeans actuated by such oscillatory movements for automatically taking up a ortion of said strip on one of said rol s and etting off a portion from the-other of said rolls.

14. In a machine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, a cylindrical carrier, rolls mounted therein on which the ends of said strip are wound, a belt having its ends secured to said carrier and servin as a support for said strip, means for oscifIating said carrier on its axis and thereby moving said a belt with its strip alternately in opposite directions, and means for automatically taking up a portion of said strip on one of said rolls and letting off a portion from the other of said rolls.

15. In a machine of the character set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, means for moving said strip in one direction in contact with said printing-surface and for returning said strip by moving it in the opposite direction, means for guiding said strip and presenting it to said printing-surface, and a cleaning-surface held in yielding contact with the soiled face of said strip.

16. In a machine of the character set forth, a printing-su face, a wiping-surface therefor in the form of a flexible strip, means for moving said strip in one direction in contact with said printing-surface and for returning said strip by moving it in the opposite direction, means for guiding said strip and presenting it to said printing-surface, a cleaning:surface in the form of a flexible ribbon held in yielding contact with the soiled face of said strip, and means for moving saidribbon to present fresh surfaces of the latter to said strip.

17. In a machineof thecharacter set forth, a printing-surface, a wiping-surface therefor in the form of a flexible strip, means for movin g said strip in one direction in contact with said printing-surface and for returning said strip by moving it in the opposite direction, means for guiding said strip and presenting it to said printing surface, a cleamng-surface in the form of a flexible ribbon held in yielding contact with the soiled face of said strip, take-up and let-off rolls for said ribbon, and means for automatically actuating said rolls to shift said ribbon at intervals to present fresh surfaces of said ribbon to' said, strip.

18. In a machine of the character set forth, a printing-surface in the form of a flexible strip, a carrier, rolls mounted therein on which the ends of said strip are Wound, means for moving said carrier alternately in opposite directions, means actuated by such movements for automatically taking up a portion of said strip on one of said rolls and letting off a portion from the other of said rolls, a cleaning-surface in the form of a flexible ribbon held in yielding contact with the soiled face of said strip, take-up and let-off rolls for said ribbon, and means automatically actuated bythe movements of said car rier for letting off and taking up a portion of said ribbon at intervals to present fresh surfaces of said ribbon to said strip.

19. In a machine of the character set forth, a D-roller, a curved printing-surface thereon, a wiping-surface in the form of a flexible strip, means for moving said strip in the direction fog opposite to the movement of said printingsurface, and for returning said strip by moving it in the opposite direction during the period in which the cut-away portion of said roller is presented to said strip and the tension of the latter thereby lessened.

20. In a machine of the character set forth, a polishing-belt, guide-rollers therefor, a swinging roller arranged to contact at one end of its motion with a supply of whiting or analogous material, and at the other with said belt, and means for inducing the movements of said swinging roller.

21. In a machine of the character set forth, a polishing-belt, guide-rollers therefor, a yielding platform carryin a supply. of whitmg or analogous materia a swinging roller arranged to contact atone end of its motion with said whiting, and at the other with said belt, and means as a pad for distributing the whiting thus received upon the surface of said belt.

22. In a machine of the character set forth, a printing-roller, a polishing-belt, a drivingroller therefor, a swinging frame adjacent to said printing-roller, guide-rollers for said belt in said frame, and pivots on such frame whereby the latter may be tilted to allow access to saidimpression-roller.

23. In a machine of the character set forth, a polishing-belt, a driving-roller therefor, a yielding platform carrying a supply of whitlng or analogous material, a swinging roller arranged to contact at one end of its motion with said Whiting, and at the other with a portion of said belt in contact with said driving-roller, and a weighted pad lying upon said belt and supported by said drivingrocations of said plank, an ink-roller carried by said plank and arranged to supply ink to said curved printing-surface, a Wiping mech anism located above said plank and rintingroller arranged to contact with said curved printing-surface, and a vertically-disposed polishing mechanism in front of said printingroller and arranged to contact with said curved printing-surface.

25. In a machine of the character set forth, a printing-roller and shaft therefor, a plank beneath said printing-roller, arranged to be moved in one direction by the frictional contactbetween a printing-surface and a surface to be printed upon, carried by said printing-roller and plank, an adjustable frictionsurface on said plank, and a flange on said shaft adapted to engage said frictional surface at the termination of such impression and complete the movement of said plank in the same direction, and means for returning said plank.

In testimony that I claim the invention above set forth I affix my signature in presence of two Witnesses.

I STEPHEN L. MORGAN.

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