US1785505A - Printing press - Google Patents

Description

Dec. 16 1930. H. RQTROTTER 1,785,505

PRINTING PRESS Filed Dec. l0. 1928 2 Sheets-Sheet 1 H. R. TROTTER PRINTING PRESS Dec. 16, 1930.

Filed Deo. 10, 1928 2 Sheets-Sheet 2 FaltenfediV 11930 y, n,

COMPANY-,for cHrcAGo, ILLINoIsgA:oonroaaTIoNloF Y:,"LLINoIs Y x .Application `filed -December My invention relates ztoipr'intingv presses that employ Vcomplemental printing members atleast one' of which is inthe'formofja rotating cylinder, theprinting form beingl .carried by one ofvsaid members and Vbeing subject to printing pressuregfrom the other member. provision of an improved assemblageof a risket with such apress inconjunction With Q controlling means for the vfrisket Wherebyits adjustment with respect to the form may be automatically controlled. As I have em-` bodied my invention the press may be operat ed as simply as though the risketfwere ab- 15 sent. The present invention is an improvement upon the invention forming the subject matter of myYco-pending application Serial No. 324,925 filed'of even, datef'herewith.

In carrying out the invention disclosed in 4 20 myV aforesaid co-pending application, I in i terpose the frisket between the printing mem- 1 bers and space a portion o fgitfrom' the form bearing printing member andipass'thisportion betweenthe cylinder and the kin'lfring.

Y mechanism if such be employed. Inthefspeciic embodiment of theinvention of saidlco pending application, theY frisket is provided With relatively movable'l anchorages atfits ends. In carrying out my present invention the frisket is mounted, at its'ends, uponfrelatively Xed anchorag'es. In'tle preferred embodiment of the invention the cylinderlturns upon a ixed axis in each of its operations, the printing member complemental thereto is in i '35 the form of a reciprocating bed, to the ends or longitudinally spaced' apart portions of Whichthe ends of the fr-islret are attached, and the inking mechanismand the cylinder l are normally spaced a 'substantially unchang- 40 Ving distance apart. The frisket is desirably in the form of a flexible sheet which is readily conformable to the curvature ofthe cylinder, 1 a positioner beingprovided for the frisket in-k l termediate its ends thatmaintains. the afore .45 said frislzet portion spaced apart'from the The invention has for its object the y akiagi meianisfmi miY 'the ferm bearing Y which Figiv lis' "a longitudinal elevation-,par-

randa-nee with my invenaen Fig. eingeplanview-ofthe pressshown inFigl Fig. Bisa' Simplified'Y'vife\'7v,`y .partially finsection', and

` essentially diagrammatic, yportioiisf being relV f' moved ,and gis'afview sim'ilarto Fig." 3

` but showin'gfpartsin changed positions.

- f Ylhe mai'nfsupporting fra-melf of thepress HENRY RQTROTTER, or CHICAGO', rLvLINoisfAssieNoR froirAenna1i:ANUriiccrUaINeVV f reference tothe accompanyil'ig t dravvingsin ftiallyi'nfsectionv ofja press f equippedriniac-j includesa :suitable'pedestal2.',` Upright siipv ports 14 carryth'e" rotating tfshatg `6 'of i the :6,0 printing cylinder?, these supportsfdeninga w f substantially ''iixed axis'of "rotation for-*the erationsL4 lt is lto 44be" Iunderstood,"however, that the invention yisn'ot to be limited vto a` -Arablei'icharacter.

r '."llheiillltng usual bearers i13 at thev sides et .thep'ress and thebed isl provided vvith the usual bearers "13', also at thesidesoff'the press, rupon which wthe bearers13` roll` as the vbed is movedin 'c'yhniderwhoseams is thus fixed; `The` press illustrated Nis a hand operated proofpress f 1 cylinder in the printing and nonprinting op1` "each printin'goperation, 'these bearers, when contact'iirng, l.defining l"the normal printing "space between the printing members 7 and 'K10'.`r- V"ThejprintingA cylinder isf lowered-for "theprinting jstro 'e and raised orthe non- .'printingfstijolife,V the .cylinder )v/'hen lowered ,exerting'printing pressure `uponthe:paper sheet? that isjpas'sing `between thej tvvo printing mmbfs?, A Suitablmhanismrmay mplbyefisifo? misma @ndloweiihsfrhe cylinder i`s` pr ovided with the cludes a shaft lkgwhich' has a fixed axis of? shaft carries circular cams l that'are eccenft-he-.upright cylinder supports` 4 which are v d Vdirectly'carried by said cams. A handlel Vprinting relation to the ornn TheV frisket'QO. .hasone or l ider andthe bed. *A positioneiyin theform'f 18 Which are carried upon; the side vsupportsv be printed upon to V,contact"Withthe fformel1.

'readily ,conformable tothe curvature of .the

l Grids y 0f; the Side Supports 19e-engages the ff il frisket between` its ends, being kso Vlocated as Without interferencel from .the .frisket por;-

may be applied to: the form fwith'out vinterfresults being automatically,effected; during Y cylinder. The ymechanism .illustrated said members being a rotatable cylinder, the

p printing forni being carried by one of Vsaid rotation upon the trarne of 'theppress This n p Surefromthe other memben'a'frisketintertric to the shaft. .'Thefsecains Work Within posedbetweensaid printing members and elongated openings-l 16 that areform'ed in' having relatiyexed anchiorages at 'its ends,

l including said cylinder.

is fixed upon thesh'aft'li'rwhereby the cyl. In witness whereof, I hereunto subscribe inderzlsup'ports lellnayvbezlowered 'andelemy naine-'fl Y i Vat'edcto@ringmthefcylinder fintojandjlout ofenV '2 1 'gfvriI- IENRY'Rf-TR'OTITER.

Anylsuitable form of inkingfmechanism' illustrated is inclusivelaofzthe. inkinggrollersg,i'VA A' V19, these sdesupports being bolted t'othe' lf frame of the press `incasethge inliing nieehp 1 anism is to be held stationary't be'norrna'lly' l f spaced a5 ubstan'tially ,unchanging distance from the cylinder. A g

' y moreopeningsl V therethrough to permit p thel vsheet' that is to raiefriskeeis.previene-withenemy exea' ff anchoregew item15.' ltiprferablyfan* choredto 4the ends ofY the reciprocable :bed

otfthe 'frisket is attached toa bar QQ'upOn posts 23that are carried by the bed and vser-vesto elevate the portiolnnof the frisket to the rightof the cylinder above the bed.; The Y risket yis preferably ai :flexible sheet 'that Vis ylinderfwhere itf Vpasses 'betweeni the cylina roller 241that is journaled'uponthe upper j to maintain'the portion lof the frisket that'j f "gf .is V-betm'eenfthe cylinder andthe inking Inechi ,anisni spaced apart 'troni/ the ginlingfinechanism. (The bed causes the rislietto travel] therewith. The frisket opening 21and the M inlgi'ng niechanisni'areso y inter-relatedthat the, iinkingv-mechanism,InayQinkthe form tion um is` above it andfso tha'nhenfrisket jference front the inkingr Tinechaiiisml,'Vi these i e {theoperation of thepress.V l Ineiectthe fris- VThe printing cylinder graduallyilays the' frisl ket up-onthe .form as the'printinggproceeds Q-ket during thenon-printing Strokeji*l g j jlf'zlaim'rw 'A Printing ing v printingfIfnembers, betwyeemlwhich the sheet to be printed upon is received; one of ket isautornatically elevatedtoclearthe inkingmechanisrn during :the'orm inking oper- 'ation and lis autonnatieally lowered `inprepf Y aration forandlduringfthegprinting stroke. I` 'i' and gr adually l permits elevation of .the fris-V prlefsfindudiiigwe cbepera-'i members and being subject to printing presand risket positioning nieans]- said means iis

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