US1552782A - Platen press - Google Patents

Description

* sept; 8, 1925.

PLATEN PRESS Filed Nov. e. 192s 2 Sheets-Sheet l .457' TORNEYS.

1,552,782 J. J. WATSON Sept. 8,1925.

1,552,782 J. J. WATSON PLATEN PRESS Fild Nov. 6. 1923 2 Sheets-Sheet 2 MINIMUM y 1 t /N VEA/TOR. JOHN d. WATSON Wfl",

AT TOEN S.

Patented Sept. 8, 1925.

Jorn# Wesson., .or ser rms:crscmnenrrcnnm.

.m1-,MEN russ nppiicemnnled November e, m3, sena-i No. 673,068.

Taawhomi may .concerns Be i itnlmofwn that I, JoHNJJ. "WATSON, ya citizenof V1th@ United States, v residing inn :the city .and nenntylofSan Franeiseoinnd 'State offCe'litornie, have inventedanew useful Improvements in Platen Presses, .of whieh the' followingis La: specification.

l This `invention rela-testo printing presses, particularly thosenf the :platen-type.

Prior to Illy-:invention in fthe eprintinglmt, thefnse ofztyperorraised cuts andathe usent' sbeeli-dies-or engraved .copper .plates nequined the use of two entirely ditferentM-typesiof piiesses. maehinesebeing very 'expensive, placed n' Ilaurnlensnmel overhead :en ma Whiting-establishment not haring :sufficient business. to maintain all .efxtihe .presses in eontiinuonssoperation. `Also., .it-prevented .operating ato 4fnll .eapeby on :a obzof one eherseter,..e`sf1onflym portion ef; :thehattery .Offrnachines. :was adapted to that type ,Lof Work.

`lith the objeob inl-wiew of -overciling this disadvantage, @the :present invention embodies a. simple andfinexpensve mechanism .by which theaopemtion .05E the Apresent popula'r {typeslof platenffpressesmay .beexpeditiously changed from a maehineemploying .type and raised gente :tol @a machine employing asteelx-.diesnand engrami. .copper plateszor Yieefwersa 1 In .carrying out this invention, 1f provide. n

i wipe-nimeehanismzwheh :muy be .sbstiatuted v wiper.

for ;one ofthe nsuelfinkin-g rollers. This wipenmeehemsmjwillnemoyevherinl; plaies@ (an-.the nonfsprlntmgsurfaces Anf: :the die n.1*

plteinhheehasehy thefinliingmliens and wtlfthe .same time'. insures than ginkwill supplied:furthe;engraved;onprintmgsuniases othefdeoriplate, l

'sFignise gpempeetiwe. view of e. Aphaservs-.itglnmay mnprovementsltherwn..

@Eig-@s sm enlarged fragmentary view-.fm side elevation of a pltQIlK-J'PIQSSimddislos ing certain details .of fcenstruetion l endpibhe ina-nner .whfieh i-nmerition. spplied SifEig. 33 ,isssnwenlergex ifregmentnrynew the f1-ends .si ,the rnking :rolleis madl the wiper and. showing them ein position @here thennking'fplase. i

Figli scisfngirfnagmmtasry plzvnwiew @of @the 5. isa @ross section through the wiper showing .its'eonstruction -1 `Referring more particularly :to theneeom panyng drawingsyl() indicates the' hed of a' stpnd-arcl type .of platen press. This is pwotalily eonnected at 111v to itheifframe ofthe pness Eso that it may "be loseillatedin: synchro, n-ism ,with faJ platen. Such' oscillation .of these ywill? bring .them into parwlle'l-ism and Lt iereby-Ydelie-r an impression a printed earriedhythe platen. Thebed: "10 comprises -vertieal side lnelnberselQand -a flat transyerseseetion'fM interposed `between the .Side sections nud whichV 4constitutes-,a

form holder. An inking. plate 1-5- sfposiu whiLeh-are pvot/ally connected at "119 Lto .the

sigle .of-.the bed 1,0. The .eerringes 18 are oseillatedhy .pim-m12@ :and: operate-.iin ifi-.med n relation with aespeet fto i the shedA 10 to alternately. reeeve .e flml of-.nk and. to .distrlbnts;ithefsemeovenathe surface of fform nrs-.plete eemied- @by lv:the $013151:l holder 14. reciproenbleend rotatable .distributing roller 2l i Quilted .adjacent :therinkng rollers to; f evenly- .distrbuting the ink-@yer ngsurecesof'ilaeflstter. Elhe fir-rlfnlngy Ivelflers 1.7 .are xtgted; .adjacent their .ends ".tmwlgseZQwhich `needneeentact with runways or guides 23 formedfmtthe sides offfthe .hed-f1.0-

'lfhefse frunweysextend along oppese sidesosf .the fat-.mm heldermnd the yzflsllifing :plaie in parallelism 1, the work'ngsf mes nfthese-nlembers.

l, Asfstatedethefinkng;.1ro1lersfiere manned in yieldable spring pressed yherirings ,whieh mlintain. the .tzruekssif-n Contantmth--Lheafrunways-:23. EThe runways-set .as er1-@medium .to lineare that the finkingirellersbear with :theypropen pressure@ ibhefsunf-.aees ot the @kin-g1 plete. end lther vffenrri :or forms suspportedanfthehform @Merci/..

' justv.dese1ibed,iswpmscti empresases i befreite Statieifgthe .i intention. iis med pmntieulanly iwith fertain improrementsif-.on ithsstype ioienressn themimtre fof. .anettwehf r the inking plateand the form holder.

ment whereb-y engraved platesmaybe used usual manner to *reproduce the engraving as forms in lieu of the usucl raised type forms or dies.

To accomplish this, I mount a wiping member 25 on the roller' carriages 18 in parallelism with the inking rollers. The

bearings 27 support-ing the wiping member are movable in a direction at right angles to the longitudinal axis of the wiping member. compression springs 28 which tend to force the wiping member toward the surfaces of In lieu of airollervtr-uck I fit each end ofthe wiper with a .rectangular carriage 30, each of which is fitted with a pair of spaced rollers 31 which are adapted to engage the runways V23 to maintain the wiperl in a predetermined relation with res ect to the surfaces of the inking plate an a form in the holder 14 andto prevent the 4wiper from rotating.

The ends of the wiper are fitted with squareV shanks 29 which extend through transverse. openings in the carriages 30. Adjusting screws 31l `are threaded intothe carriageslt). and are collared'int openings in ,the shanks 39y to permit the wiperto 11 ate thickness.

be adjusted toward and away from the' surface ofA the-form holder. l f

The wiper per se comprises a semi-cylindrical shell preferably of metal of appropri- A padding layer ofpfelt 32 and an exterior' covering of leather 83 are tightly stretched over the convex surface' of the shell and are secured thereto by means of bail shaped clamps 34. y

To prevent the wiper from contacting 4with the inking plate and thus receiving a charge of ink, I fix cam members 35 to the runways 23 at a point where the wiper will pass over the inking plate. These cam members simply supplement the runways to maintain the wiper from engagement withthe inking plate. The length of the cam members is suchas to permit the inking rollers to'pass thereover and engage the inking surface of the plate. 'l v 'In actual operation, the steel die or copper plate is mounted on a chase and the latter is clamped in the form holder. Incase a copper plate not type highis used, I employ backing to bring it to the proper height in the chase. Y

' -On the inking -stroke ofthe ink roller carriages, the wiper will -passdownwardly over the face of the engraved plate carried by the form holder and the inking rollers will apply a film of ink to the plane or nonprintingsurface of the plate. On the return or upward stroke, the wiperwill remove the ink from the non-printing surface and force a portion of it into the engraving to properly supply the same with ink. The bed and platen of the press will then function in the These lbearings are. tted with,

in ink on a cardor the like carried by the platen.

It is rdesired vto particularly point out that on the return stroke of the ink roller carriages the ink wiped from the plate collects in a heavy film just forward of the point where the wiper contacts with the plate. This is due to the convex surface of the wiper and results in properly supplying ink to the engraved portions of the plate.

Attention is directed to the fact that the wiper is substituted in lieu of one of the usual ink-ing rollers. If it is desired to use type or. raised cuts in the press, the wiper may be replaced by an inking roller and the cam members' 35 are removed. From this and the foregoing it is ob-vious that by myv invention, 'printers' are enabled to employ platen presses for use in connection with type, raised cut, steel die andl engraved copper plate work.

Although the present invention is disclosed as an attachment for standard designs of platen presses, it.v isy to be` understood that it may be used in connection with `other designs of presses and that lI- do not limit myself to the-form of the inventiondisclosed, as-various changes -in the construction and arrangement `of the various parts maybe made by those skilled' in `the art without departing from the invention as defined in the appended claims. f

l Having thus described my invention, what I claim and desire to secure by Letters Patent isz- 4 f l. In. a press, an inking `plate having an ink fountain, a bed'having a'plate'holder,

carriages carrying inking rollers, runways formed ont-he bed and engageable bytrucks on 'said vinking rollers wherebywflwhen said carriages are: operated the rollers will be guided `alternately over the surfaces of the inking plate and a plate ina'holder in contact with the surfaces thereof toV distribute ink over the surfaces of aplate -in said holder, a wiper member adapted to be ope erated by 'said carriages in unison with the inking rollers, saidwiper lbein yield-ably connected to the carriages and a apted to be guided by said runways whereby it willengage and remove inkfrom the non-printing surfaces olf a plate inl said holder, and means in *thel path of-tra'vel of said wiper for preventing said wiper from. contacting with saidinking'plate. j

2. vIn a press, an ink-ing plate having an ink fountain, a bed having a plate holder,

carriages carrying inking rollers, runways ink over the surfaces of a plate in said holder, a wiper member adapted tobe operated by said carriages in unison with the inking rollers, said Wiper being yieldably connected to the carriages and adapted to be guided by said runways whereby it will engage and remove ink from the non-print,- ing surfaces of a plate in said holder, and means in the pat-h of travel of said Wiper for preventing said wiper fro-m contacting with said inking plate, said means compris ing raised portions on said runways in the pat-h of the wiper for maintaining the Wiper out. of Contact with the inking plate, said raised portions unafecting the operation of the inking rollers.

3. In a press, an inking plate having an ink fountain, a bed having a plate holder, carriages carrying inking rollers, runways formed on the bed and engageab-le by truc-ks on said inking rollers whereby when said carriages are operated t-he rollers will be guided alternately over the: surfaces of the inking plate and a plate in a holder in contact with the surfaces thereof to distribute ink over the surfaces of a plate in said holder, a wiper member' adapted to be operated by said carriages in unison with the inking rollers, said wiper being yieldably connected to the carriages, said wiper having a convex wiping surface, roller carriages at the ends of the wiper and engageable with the run ways to guide the wiper and prevent it from rotating, said wiper being operable in conjunction with the inking rollers and engageable with the non-printing surfaces of a plate in said holder to remove ink there.- from, and means prevent-ing said wiper from engaging the inking plate.

4. In a press, an inking plate having an ink fountain, a bed having a plate holder, carriages carrying inking rollers, runways formed on the bedy and engageable by trucks on said inking rollers whereby when said carriages are operated the rollers willbe guided alternately over the surfaces of the inking pla-te and a plate in a holder in contact with the surfaces thereof to distribute ink over the surfaces of a plate in said holder, a wiper member adapted to be operated by said carriages in unison with the inking rollers, said wiper being yieldably connect-ed to the carriages, said wiper having a convex wiping surface, roller carriages at the ends of the wiper and engageable with the runways to guide the wiper and prevent it from rotating, said wiper operable in conjunctlon with the inking rollers and engageable with the non-printing surfaces of a plate in said holder to remove ink therefrom, and means preventing said wiper from engaging` the inking plate, said means comprising raised portions on said runways adjacent the inking plate for maintaining the wiper out of Contact with the inking plate, said raised portions unaffecting the operation of the inking rollers.

JOHN J. WATSON.

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