US1815622A - Multicolor printing press - Google Patents

Description

F. E. JAMISON MULTICOLOR PRINTING PRESS Filed Oct. 7. 1950 Patented July 21, 1931 MULTICOLOR". PRINTING PRESS Application filed ,October 27, 1936. Serial No. 491,452.

n j n' 'ipn li e' lt m li c br p n eei t i e r nd h f r. s Pr ary q js to'pf iice a con tjr ction whe eby" the. print a P a e eI I P e i ed ro 3 ,th ifesp ective lcylindei's without adjustment g aha -130i any of the inking rolls or fi ihin sl t I Astillfflirtherobject is' to producela press at sa p e. s rii ;du end i ely economical construction; and with these gen} fe al sets in view ot ers as will hereiaartei p ar, the'invention consists in certain and u's eful" features of construction and oiiibiiiatioiii of parts as hereinafter'described ahdiclaimedfl; and in order that it ma f beifully understood, reference is to be had to the accompanying drawings, in which Figure 1 is a fragmentary side elevation of a multi-color printing press embodying the invention.

Figure 2 is a plan view of the same.

In the said drawings, where like reference characters identify corresponding parts in all of the figures, the side frames of the press consist of stand members 1, two horizontal top members 2 and cap members 3, each bridging a central space between the respective top members and securing between them upon the stand members, opposite blocks 4 forming bearings for the shaft 5 of an impression cylinder 6 common to all of the form cylinders, as will hereinafter appear, the impression cylinder having the customary blanket cover 7, and being driven by power means (not shown) applied to shaft 5 in any conventional or suitable manner.

As shown in the drawings, there are four form cylinders 8 arranged around the impression cylinder, the shafts 9 of two of said cylinders being journaled in bearings 10 secured to opposite edges of the stand members 1. The shaft 9 of the other two form cylinders is journaled in bearings 11, mounted on pairs of oppositely inclined arms 12 of the top members 2.

It will be noted that more than fifty percent of the peripheral surfaces of the form cylinders are always beyond or outside of adjacent parts'of the press and that the plates 12a removably secured therein in pairs, in any suitable or conventional manner, as by a the conventional clamps12b, are accessible withoiit' necessitating the removal orladjus'tment of any part of the press other rmnesgeung such rotation of the impression cylinder,and hence of the form cylinders, as to fully exposethe respective plates inthe eyent'fthe operation of. the press isarrestedwith one of said, lates in a position where it cannot be readi y reached for replacement onotlier piir, poses. t

As a press of this character, of desirable size for printing ,coinic' sections of news? papers, is too high for an attendant, standiiigon the floor, t ois'elcilr e aiplate orf r move it fronti' position on ,tlietwo topmost r y in if lathe st'iilld m i b provide'cl'with elevatedplatforms, not shown,

upon which 'the' attendant may 'tahdqn stands areneeded as regards the two low er "fo'rrncylinders, as they arewithinlconyenient that the] referenc'tolthe height of the press,

Coaxial and rotatable withinafia auge sames peed asand'disposed at oneerid ofthe impression cylinder is alarge gear wheel 13, interme'shi'n'gwit gear wheels 14 c-oairial and rotatable with the'fo'rm' cylinder s. 4

g Thegvarious mechanisms for supplying ink s or desired colors from the respective inking rollers to the plates on" the forms cylinders, may: be of any suitable or conventional type, connected by trains of 16} (only one being shown) tothelarge gear wlieel ofth e I impression cylinder, which gearing requires noadjfustrnent or shifting when aformlroller plate or plates is to ibe placed in or removed from position, the same statement ap pliesjt'o the iii-distributing rollers 17' for the transfer of ink from the inking rollers to the plates of the respective form cylinders.

The paper web P. encompasses the impression cylinder for the greater part of its periphery, and preferably leads to and from the lower part of said cylinder and over guide rollers 18, journaled in the stand memher.

All of the form rollers, are adjustable to ward and from the impression cylinder to compensate for wear and impression, and the plates thereon are likewise adjustable circiiimferentially, not shown, to insure proper and accurate registration of the dili'erent colors printed upon the web as it passes the respective plates. 7 p The conventional and generally used multi-color presses for newspaper comic sheet printing are tall and expensive, and all. such presses, as far as I am aware, are objectionable in that adjustments and replacements of the plates relative to the form cylinders, not only necessitate the conjoint attention of two operators, but adjustment or shifting of parts carrying the gearing, ink and the distributing rollers, and in the standard types of such presses such adjustment or shifting operations consume several hours and during such period the press is idle. lVith the press herein described and shown, permitting change of plates without necessitating any adjustment to place the plates in proper operative relation, several hours running time is saved each week. In other words, several thousand more papers can be printed per day with this press than with presses of the type mentioned, running at the same speed. Furthermore the construction and size of the press are such that it can be transported or shipped if necessary, as a single unit, and when shipped in knock-down condition, can be erected or assembled for operation in a very short time and at low cost as compared with the conventional type of multi-color press for printing comic sheets or supplements for newspapers.

From the above description, it will be apparent that I have produced a multicolor printing press embodying the features of advantage set forth as desirable in the statement of the objects of the invention, and which may be changed in minor particulars without departing from the spirit and scope of the appended claims.

I claim:

1. In a multi-color printing press, comprising a stand member, an impression cylinder supported from and at the upper end of the stand member, oppositely-projecting top members upon the stand member and spaced apart at their inner ends, the top members having upwardlydiverging arms equi-distant from and at opposite sides of the axis of the impression cylinder, bearings upon the said arms, form cylinders journaled in said bearings and geared to the impression cylinder, each form cylinder hearing such relation to the impression cylinder and to its respective supporting arm as to always make accessible more than fifty-percent of its circumference.

2. In a multi-color printing press, a stand member, a pair of top members upon and projecting laterally beyond opposite sides of the stand member, bearing blocks upon the stand member and between the top members,

a shaft journaled in said blocks, an impresthereof; a set of ink-distributing rollers for engagement with each form cylinder at a point beyond the said exposed and accessible circumferential area thereof, and means for transmitting power from the impression cyl inder to the ink-distributing rollers.

In testimony whereof I affix my signature.

FRANK E. JAMISON.

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