US1536238A - Printing machine - Google Patents

Description

' May 5, Y192'5.

H. H. PARMEN-rr-:R

PRINTING MACHINE Filed Oct. 14.L 1924 May 5, 1925',

H. H. PARMENTER '4 sheds-sheet 2 May 5, 1925.

H. H. PARMENTER PRINTING MACHINE Filed 0013. 14, 1924 'Sheet-SM-Sht 5 rllll l lll.

'4' Shetssheet 4 H. H. PARMENTER PRINTING MACHINE Filed oct. 14. 1924 Il )f M A( joan/'712,622 r May 5, 1925.

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Patented May I5, 1925.

@UNITED STATES, 'ParaiarI OFFICE. i,

iinnrnarfnannme rannnnrna, or Lennon, nivo-Lann Application filedV Octoberlf, 1924. `Serial No.V 743,617.

To all 'whom 'it may concern.'

Be' it known :that I, HERBERT HARDING PARMnNrnn, a British subject, residing` at 201Croxted Road, Dulwich, London, S; E., England, have invented certain new and use- `:l'ul VImproveinents in Printing Machines, of

which the following isa speciiication.

This invention' relates to` printing inachines more i particularly intended for printing on continuous Webs; I i

1n connection with such machines it has already been proposed to mount the bed at the end oit a` pair of heavy rocking levers Vfor an arcuate;*motionltoivards and away -l'roin the platen, the inking rollers being pivotally mounted relatively to the rocking :trame supporting the bed and ina-king a singie traverse between each impression.

In this construction the ink distributing rollersare adapted to-be continuously rotatedin bearings carried by the frames holdingthe bed by means of an endless belt passingover idler pulleys, tWo of Whichrequired to be positioned coaxially with the axis of the rocking frame.V This construction involves several mechanical objections. i For instance, the arcuate `motion of the `bed leaves a Wedge-shaped spacebetween the bed and platen at each litt necessitating a longer sti-cke than Will kbe required by a straight line movement, .and the mechanical disadvantages arising in connection With the movement of the heavy bed at the end of long rocking arms operated by levers Workine* at comparatively short leverage are considerable. Further, the arrangement of the driving belt for `the ink distributing rollers `to `follow the line of the rocking levers` and V`pass round the axis about which they rock `isfliighlyinetiicientand the Whole` arrangement is `liable to `rapid Wear and consequent prejudice to they qualityoif the Work; n

The present invention therefore has for its object toycoinbine linking rollers making a `single traverse betweeneach impression and continuously-ii'otating ink-distributing rollers with a bed having a `straight line movement and remaining parallel to itself.

The invention further comprises `improved means whereby the ink distributing rollers, i

which` rotate continuously in bearingsl carried by the` reciprocating bed,` are driven directly from arotarysliart rotating in fixed bearings. Y. ,i

y Further obiects-,Will be revealedin the accompanyingdescription and set forth in the each side of the bed 3 `following claims as will readily `be understood. i i i The invention isv illustrated in the accompanyingy drawings, in which 1 is a front elevation of vthe press,

Figs. 2 and 3 are side elevations from the 'right and left respectively of Fig. 1,

rails 1b being provided to take the Weight through the intermediary oit projecting pins- 10. Yoke-shaped guides 11 are provided :tor supporting the Web `iinmediatelybeneath the platen, the direction of movement ofthe web being laterally across the machine in the vieyv indicated in Fig. 1. The type-carryingbed 3 is carried by a slide 3b mounted to slide vertically in guides 3 and reciprocatedv with `a simple harmonie motion by a 'crank f1 mounted on the mainshai't 5` and engztging a cross-pin 5a held in cheeks 5b bel neath the bed by means of a connecting rod 5c. rllhe length of the connecting-rod 5 is adjustable to vary the pressure upon the platen. The ink distributing drums 6 `one p p y are carried by frames 7, S, secured to the bed so that the drums G `move up and down with the bed 3. The inking-rollers 9 are mountedon arms l() pivotn ed at. 11 inthe iframes 7 and' 8. The arms y10 are oscillated to-and-fro by a `cam-shaped yslot in a disc 12 on the main shaft 5. A roll 13 on a slotted sliding arm 14 is connected.

to alever 15, the other end oil' Which carries a pivoted link ltifastened tothe arm 10. The lever' 15 rocks about a pivot fixed rela tively to the pillars 2 of theinachine iframe, andthe slot 14LL oit the arm 141 is iitted with a sliding block 14h mounted on the shaft?) to guide its'n'iovement. i The cam disc`12 is loose on the main shaft 5 and is driven from the shaft by a tivo to one reducing gearing 17, shown in plan in Fig. 5, so thatthe ink- Ai1 g rollers 9 make `only a single t'avei'se of up and down `movement/ot the bed 3.

Q`(for\vard or back) for each complete cycle provision of the The cam slot 12 is designedito maintain the speed of the rollers 9 across the type uniform during the movement of the bed 3.

The ink-distributing drums `are `driven by a chain 18 passing over sprockets 19 on the drum spindles and guiding` sprockets 19, and a sprocket- 20 on stub-shaft carried by the frame 7. is mounted on this shaft and driven by a chain 22 passing-around a sprocket 2? which is mounted eccentrically on the main shaft liy means of this eccentric sprocket the ink-distributing drums -arerotated at `uniform speed from'thefiixe'd shaft 5 whilst they are reciprocated vertically along with the bed .3 so ascontinually to approach and recede from' the said shaft.

The hiking-drums are preferably ai ranged to rotatein opposite directions so that the conditions under `which the inkingrollers receivetheir charge of ink are exactly similar at each side .of the machine, this being effectedin the form shown by the double gears l9b, 19c, Fig. 2.

"The, ink duct 24 is carried by a duct frame 24, Fig. 4monnted on a plate 24e, adjustably mounted on lugs 24" carried by brackets 24c .secured to two pillars 2, slots 24d being provided in the plate,24e to re- U ceive bolts 24t to enable the position of the duct to be adjusted nearer to or further from the machine adjacent to one of the mkdistributlng drums. 'The other `ink-,dis-

tributing drum 1s not provided with a duct `but receives the surplus ink from the inking rollers aftercompleting an impression and redistributes'it upon them prior to their return movement. The roller 25 at the delivery end of the duct is rotated by a ratchet 2G and pawl 27 carried by a bell-crank 28 mounted on the roller spindle androcked by connections 29,80, 31, from an eccentric 32 on the main shaft 5. The ink-carrying roller 33, Fig. 3, ismounted in arms 34 mounted on a spindle 39 carried by the ductframe and is reciprocated longitudinally by a lever 3.5, Fig. 4, pivoted at B6, and forked at one end 37 to. engage a pi1r88 o n the yspindle 39, and adaptedrto engage at the other end `an inclined slotted arm 40. moving upand down with the .bed 3. 'The roller 33 is moved horizontally between the roller 25 andthe drum (i at a certain part ofthe cycle Aby an arm 41 rigid witlrthe spindle 39 operated by a spring-controlled stop 42, and thearrangement is such that the roller 33 is in position to ltouch the drum 6 when the bed is in the lower vpart of its range of movement. vrPhe spring-controlled stop 42 is, carried by the rising and falling frameS .and it will be seen that it engages the arm 41 on eachdownward movement of thev frame seas to press the roller 323 against the drum G continuously luntil the frame comes up again. As the stop ascends in its A second-sprocket 21 `tickets or the like at one time.

;By= this==ar1ange1nent, the shock of contact between the drum (i and roller is reduced to .a .minimum .andthe ink is evenly distributed, and any splashing is obviated.

A roller 33a,-F ig.-2,\ is provided aty the other side `of; the. machine to co-.aet with. the second ink-distributing'drum G andisreciprocated l-longitudi nally whilst in contact with it `to-ensure even idistribution of the ink upon it. For this purpose, the rollerzi@ is mounted .on larms L48 pivoted in bearing brackets'() and controlled .by a spring; 51.

'The pivot spindle 52 carries collarsr 525 engaging in slot 53 whichhis-.iformed in .an inclined `wing 53 of the yframef shown more clearly in Fig. 1.

'ln the form show-n, the press is arranged to print a web passing througlrat right angles to the vdirection of traverse ofthe inking rollers. The web` is .fed Vforward intermittently, suficlently to move the already printedanaterial -out of'fthe range of the press and supply aclean section of theweb ready to be printed.

The size of the pressmay be designed to print one, two ora large number of labels,

If it -is desired to print intwo orfmore colours, the ink-dnet24 .isgdivided by partitions 44 into the desired-munberof sections, and the inl@ Vdistributing drums are f similarly divided;

the feed is correspondingly reduced in proportion to the vn un'iber of colours so that `wlnlstone label or one series ofi -labels is `bein g printed- 'in one colour, lin one Zone of the area of the` platen,-the others are lbeing s1- multaneousl'y printed in the other colours in adjoining zones'by the same upward movement ofha single typecarrying lbed.

' Elf it is de sired-togprint the tags, labels,

. etc. on both sides in one passage through the machine, use an arrangementsimilar in general planv to one that-has been proposed Ifor the printing of railway or other tickets.

Thus'iise two :presses ofthe kind already described arrangedin tandem fashion, the second press .being 'in4 close succession to the first and in opposite relation thereto` that Iis to say, with the platen below, and the reciprocating typecarrying `bed descending upon .it from above. Both presses Iare mounted on onesnpportingframe and are adjustable relatirely to one another.

The .individual presses for the tandem yarrangement are identical with that descr1bed above, with cranks to reciprocate the beds and eccentric sprocket gearing to drive the ink-distributing drums. `The two main shafts 5, v5, Fig. G are driven from a single source in their proper relation by a shaft 60vat right angles to the direction of movement of the paper web between the two printing heads. y

`The lower main shaft 5 is driven directly vby a worm 6l and worm wheel 62, and the` upper `one by an inclined shaft 68 and worm platen supported thereby, a bed, a crank shaft mounted 1n the frame and connected gearing 64I- The yworm gearing could be replaced by bevel gearing 1f desired.

It is to beunderstood that the various details offconstruction can be modified so long.

I can enlarge theplaten and the form to any desired size, suitable for printing such articles as are usually printed on this class of machine, such as paper bags, leaflets, bill heads, memorandum forms, etc.

I claim 1. In a printing machine, a frame, a

to the bed for moving the" bed vertically of the frame toward and away from the platen, frame plates movable with the bed, inking rollers mounted for pivotal movement on the frame plates, a disc mounted on the crank shaft, and means operated in `the movement of said disc for moving the ink ing rollers across the bed during the move ments of the bed relative to the platen.

2. In a printing machine, a frame, a platen supported thereby, a bed, a crank shaft mounted in the frame and `connected to the bed for moving the bed vertically of the frametoward and away `from the platen, frame plates movable with the bed, inking` rollers mounted for pivotal movement on the frame plates, ink distributing rollers mounted on the frame plates, a fixed ink duct, an ink transferring` roller operating between the duct and adjacent distributing roller, means for actuating the ink transferringl roller, and meanscarried by the bed for longitudinally moving the ink distributing roller. i

3. In a printing machine, a frame, a plat en supported thereby, a bed, a crank shaft mounted in the frame and connected to' the bed for moving the bed vertically ofthe frame toward and away from the platen, frame plates movable with the bed, inking rollers mounted for pivotal movement on the frame plates, ink distributing; rollers mounted on the frame plates, a fixed ink duct, an ink transferring roller operating between the duct and adjacent distributingl roller, a member supporting the ink transferring roller to permit operative movement thereof, and a spring,` controlled stop carried by one of the frameplates to engage and operate said member and thereby the transferring roller in the operation of the bed.

In testimony whereof I affix my signature.

HERBERT HARDING PARMENTER.

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