US1675448A - Inking mechanism for printing presses - Google Patents

Description

I. CARSON INKING MECHANISM FOR PRINTING PRESSES Jul 3, 1928.

Filed June 1927 3 Sheets-Sheet (in W M maznson/ July 3, 1928. 1,675,448

I. CARSON INKING MECHANISM FOR PRINTING PRESSES Filed June 1927 s Sheets-Sheet 2 July 3, 1928.

1,675,448 I. CARSON INKING MECHANISM FOR PRINTING PRESSES Filed June 1927 3 Sheets-Shea t 3 j i l v l w i I 85 W I? c F f 49 Q 50 ./m Cams-0m flffOr-WLQZ ;-.cation of thebed-fthe cyliinder being;wered;

Patented July 3, 1928.

UNITED 1 STATE 'OR'TO THEDIIAMO'N'D' MATCH COMPANY, or

CHICAGO; ILLINOIS; CQRPORKTION OFiILLXNOiS.

INKING' MECHANISM FOR 7 PRIINTiN'G vIE'R'ESSES:

Apphcatipn ,filed June 6,:

This invention relates to printing presses: and more especially to presses of the fFKellj'l? type, wherein a continuously -,rotating. cylindet makes two. revolutions for each, recipros.

for the printing stroke of the bed and raised during the return stroke.- The i present: in-

ventionfco'ncerns especially the inking. mec l ,5 ani I =Qf the press; my, object ',bein'g.-t effect a lunifo rmt-distribution" of;v ink-10f different 1927;; Serial-No. 196,757: 5

frame- Hence during the;- rotation of the shaft. 2'1 intermittent motionis transmitted therefrom .to the ink deliver-y. roll-15.

.9 designates ,the oscillatory duct0r roll which -g movable back and forth}; between the ;dQlive ny roll v and the first in k distribut-i ingi-g roll; 30,, which; .lattel together with the succeeding distributing;- rolls 32 are" mounted; to rdtate in a frame-,33Qwhiehiovei hangs the freely. Iotatable inking; rolls-34, 35,

4 for 5 exe mplei in the. iprifntiilg of apdlib ard sheets that aresubsequently-subdivided into, matqh boqk covers .7 z a i To ;this end my invention .comprisesa novel construction, -:arn ang ement and opera tion of the rolls p t the-vinking mechanism as will be hereinafter described: and. claimed.

lib-the dnayyings Figure 1 is a side elevation of a portionotE; at Kel y- P essem dy nemy; n e tiem1 F ig 2 is a'itransyerselvertical section. ot.' the press as on thehline 0t Fig. 1.

Eig 3 g is a longitudinal. ,ve'rtical section, through the fountain and, rolls of tIie inking mechanism, as on the l ine '3-. 3 'of gFi'g 2,, ,Fig; is apartial .p'lan oh the 5 fou-ntaini and adjacent i-011 s. V

v eferring. to -t11e;drawings 11 designates a 1pa rt 0f; the;supporting-frame of a Kelly; press 5. -and :12 designates the reciprocating bed; v on ,which the typeifio rm is mounted.

.13 designates the inkafountain whiclris supported bysuitable brackets 14 on the side; of .the main frame, and 15 (lesignz1tes;tlie intermittently rotatableyinkdeliveryv roll. which extends longitudinallyof and con? stitutes the back of the fountain. V

Theshaft 16 of this roll has fast. thereon, at one end, a ratchet-wheel .17 with which engages a pawl l8-caifried by onearinof a belLcrank :lh loosely hung. on the shaft 16. The other arm ofthe -bell' crank: is connected by meansof arr-0d, 20, ;with'a lowerr0ckarm 21, the ;sl 1aft;22 ofl which latter-is, jou1'-. naled in'a bracket 23 on one side of the main .frame..- This shaft 22 has secured thereto anact iating-earm 24; the roll 25= whereof is held inoperative contact with a suitable cam 26-011 adri-ven shaft 27 of the press by-n1eansof a retract-ing spring 28 secured t0 the rock-arm 21 and the main u ingj r0 J- L, 3 m gs M t ge e fon centinuqus -ret ation, .;a S. ,u sual-,. the {distrlhuting roll 3Qi-ieontacti;ng;.with the inkingroll 3 L .and the distributinggrell- 32 contacting w-iflithe inlring,;,r0lls,;3 5and 36.

The shaft .37 of the ductor roll-is suppqrted at its ends on rocker earrhs- 38, the shaft 39,0t which is journaledJinthe-adjacentside bracketil t, .On'oneend Qf tllis shaft is an arm- 40 whichfis connected by means ota-rorlisjoumaled iin the bracket -23;- Thisshaft 43 ;lS pIpVid8d Wll3h an'ac-tuating' amt 1 44, havinga roll 45 whicl1-=is .-hel d? inoperative contact with 1 azsujtable :camAQ g mthedr-iven U cated rat the grespeetivesides of the mainframe, and these rolls are positioned to contact with the typeformasusual;

Hereto fore the; surfacesofthe distributing andinking-rollshave been continuous or uninternuptecl-if-romend t0 end,- and; the two; distributing "rolls- 30, 32 have had, capacityfor= longitudinal reciprocationwithin limits lI1 O1fde['"l ZO: efiect .the uniform;-- distribu-tion 0t} the-ink onrtheperipheriesof the seriesof E distributing: rolls preparatory to fits transference to the r-respective inking a Th means :fo. rreciprocating; the rolls- 30,- 32 mcludedm vibratmy lever 49 the upper end-10f which: was detachahlyu connected with 3 c1 r-- cumferen-t-iall-y grooved blocks on the ad-- jacen-t ends oftheshafts30, 32" otsaid rolls: 30, 32 respectively. The/"block on the shaft 30' is shown 21131.49. The lever 49 was connectedat its: lower-end by a detachable pin 50 to oneend-of'arod 51 operatively con- 41 with aylower rockarmlQ-avhose shaft- 43 nected by a strap to an eccentric 52 on the driven shaft 27.

The Kelly press embodying the foregoing described construction was primarily em ployed for single color printing, but when two-color printing of the character previously mentioned was desired, the ink fountain 13 was divided into two chambers for the reception of the respective colors, by means of a partition 53 inserted in the mid section of the fountain, and the pin 50 at the lower end of the lever 49 was removed so as to disconnect the lever from the eccentric rod and prevent longitudinal reciprocation of the rolls 30, 32; it being obvious that such reciprocatory motion, if permitted, would cause the overlapping and mixing of the different color inks on the respective portions of the rolls; However, the absence of the longitudinal motion of the distributing rolls results in an uneven distribution of the ink on the inking rolls, and in consequence the impression varies on and throughout the respective sections of the sheet. Moreover, owing to the continuity of the opposing surfaces of the rolls the colors tend to run together and overlap midway between the ends of the distributing rolls.

According to my invention, I adapt the press to double-color printing in which the objections hereinbefore mentioned are avoided, as follows: The fountain 1.3 is divided, as previously, into two chambers by means of the partition 53, but the connection between the lower arm of the lever 49 and the eccentric rod 51 is undisturbed. The pivotal block connection between the upper arm of the lever and the shaft 32 of the roll 32 is removed, and that between the lever and the shaft 30 of the roll 30 is retained. Hence the roll 32 simply rotates without longitudinal reciprocation, while the roll 30 is given longitudinal reciprocation as well as rotary motion. The ductor roll 29 and the distributing roll 31 and the first printing roll 34 are formed midway between their ends with circumferential grooves 54, 55, 56, respectively, each of which divides the proximate roll surface into two sections adapted to receive and segregate the respective colors; that is to say, the ductor roll receives from the delivery roll the differently colored ink, well spaced apart, and transfers the two separated colors to the uninterrupted surface of the roll 30, which, in turn, applies the ink to the respective opposing surfaces of the inking roll 34, and also to the interrupted surfaces of the distributing roll 31. The latter roll in turn applies the ink to the uninterrupted surface of the roll 32-, which thereupon transfers the ink to the respective contacting inking rolls 35, 36.

The width of each of the grooves 54, 55, 56 is equal to the extent of longitudinal movement of the roll 30, or substantially so, and

therefore such roll 30 effects the uniform distribution of each color on the opposing paired surfaces of the rolls 31, 34. Likewise the surfaces of theroll 31 effect the uniform transfer of the ink on the distributing roll 32, which correspondingly applies the ink to the inking rolls 35, 36. Consequently there is no liability of the colors overlapping at the middle of the rolls.

The foregoing described roll construction and operative arrangement embodying my'invention, although simple and inexpensive, have solved the problem of uniformly printing two different color sections'in close lateral relation throughout the sheet.

I claim 1. Inking mechanism for printing presses having a fountain with separate ink chambers and having'als'o associated distributing and inking rolls, said distributing rolls comprising a plurality of rolls presenting unin' terrupted ink-receiving"surfaces, and also an intermediate roll having spaced-apart inkreceiving surfaces in peripheralc'ontact with the surfaces ,of the laterally adjacent rolls,

means for delivering the ink in spaced rela-' tion from the respective chambers of'the fountain to the surface of one of-the said adjacent rolls, and means 'for' longitudinally reciprocating the latter roll in a path substantially equal in length to the width of the gap between the spaced ink-receiving-surfaces.

2. Inking mechanism for printing presses having a fountain with separate ink chambers and havingalso associated distributing and inking rolls, said distributing rolls comprising a plurality of rolls'presenting uninterrupted ink-receiving surfaces, and also an intermediateroll having spaced-apart ink-receiving surfaces in peripheral contact with the surfaces of the laterally adjacent rolls, a ductor roll operative between the fountain and one of the said adjacent distributing rolls and having spaced-apart ink-receiving surfaces corresponding with those of the intermediate,distributing roll, and means for longitudinally reciprocating the said adjacent roll in a path substantially equal to the length of the gap between the spaced ink-receiving surfaces.

3. In inking mechanism for printing presses, the combination With a fountain having separate ink chambers, of a ductor roll having spaced-apart peripheral surfaces for receiving ink from the respective chambers, two ink distributing rolls having uninterrupted peripheral surfaces to one of which the ink is transferred from the fountain by the ductor roll, an intermediate ink distributing roll having spaced-apart surfaces corresponding with those of the ductor roll, means for longitudinally reciprocating the distributing roll with which the ductor roll co-acts, the reciprocating stroke being substantially equal in length to the width of the space between the ink-receiving surfaces of the intermediate roll, an inking roll in peripheral contact with the reciprocative distributing roll and having spaced-apart inkreceiving surfaces corresponding With those of the ductor roll, and two inking rolls having uninterrupted peripheral surfaces in contact with the second of said two distributing rolls.

June, A. D. 1927.

IRA CARSON.

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