US2272045A - Sheet controlling apparatus - Google Patents

Description

whereby the side guide mechanism'is swung into and out of its operative position, as well as moved laterally for the purpose of side registering the sheets.

Referring to Figure 1, the sheet S is shown in its registered position on the transfer table In so that its leading edge ll abuts against the front registering guidefacesl 2provided on two or more of the radial grippers [3 carried by the impression cylinder l4, and the side guide I5 moves tion depicted in broken lines in Figure 3 and consequently has swung downthe lever 36 and therewith rocked the shaft l6 and its associated parts into their operative position illustrated in Figure 1.v During the upward movement of the shaft l6 said parts are again being returned into their inwidth of the table III as shown in said patent to 7 Stevens. This bar carries the registering guide i5 in a manner that the guide may be adjusted and maintained in different positions longitudinally thereon. A groove is formed in the transfer table II! to accommodate the side guide l5.

The bar I! also has provided thereon one or more brackets 2| each one of which, by means of a clamp 22 and thumb screw 23, may be moved into'different positions over said rod for the purpose of applying the brush 24 carriedithereby at the desired points on the top surface of a sheet to be registered. The threaded stem 25 is mounted to slide within bores provided in the bracket and the brush is adjustably arranged so that, by means of the knurled nuts 26 and 2'! which are threaded onto the stem, the brush can be moved with relation to a sheet on the table ill. The stem 25 is held against rotation within the holes in the bracket 2 i; therefore,'a micrometer adjustment of the brush 24 is made possible by loosening the nut 26 and by then turning the nut 21.

In order to avoid curling up of a sheet along its leading edge and also to straighten out the leading edge of a sheet before it is presented to the front guides I3, I provide a bar 30 which extends crosswise of the table in soy thatit will cover the entire width of a sheet to be registered.

This bar is adjustably secured to the rock shaft l5 by means of arms 3| and clamping brackets 32..

In its operative position, as shown in Figure l, a

gap 33 is left between the bar 30 and the top of a sheet to be registered in order to prevent damage to a sheet. 7

In Figure 2, I have illustrated the side guide mechanism with its associated parts in the inoperative position, namely at the time whena sheet is being fed onto'the transfer table II) by the feeding mechanism of the press. I

In the operation of my novel sheet controlling means, namely during the down-stroke of the registering guide l5 when the latter approaches its I position shown in Figure 1, the brush 24 lightly engages the sheet on the transfer table II] so that, during the final down-stroke, the brush urges the sheet forwardly against the front registering faces I! on the impression cylinder grippers l3 and holds the sheet against displacement on said table.

The bar 30, during its downward movement, causes the front portion of a sheet to straighten out and also prevents any curling upor buckling of th front edge of a sheet while the sheet is bein registered.

The conventional means, illustrated in Figure 3 and which preferably may be arranged on one of the vertical side frames of the press, includes operative positions as shown in Figure 2.

In Figure 4 I have also shown a conventional means whereby the side register I 5 is caused to move laterally for the purpose of side registering the sheets. v r s r i w I a This means broadly comprises a roller track or cam 40, which preferably is secured to the side frame H of the press. The, outer end 42 of the rock shaft l6 carries a bracket 43 on which is 'arranged a cam roller to rotate freely and to extend within the track of the cam); Preferably the rock shaft I6 is guided in a bearing, which may be secured to the reciprocating cylinder carriage 46 by means of bolts 41,-or the like.

It will be understood that when the cylinder carriage 46 and its associated parts move downwardly from their position depicted in full lines in Figure 4 the roller rides within thecam track 40 and is displaced laterally, that is to say to the left, as viewed in Figure 4', together with'the rock shaft 16 and the side guide Him the purpose of side registering a sheet, and said parts will assume the position shown in broken lines in Figure 4. When the cylinder carriage 4'6 ismovedupward during the printing stroke of the press, then the roller 44' and therewith the-side guide mechanism are restored into their inoperative positions shown in full lines in Figure'4.'

I wish it to be understood that, while I have illustrated and described a preferredxform and embodiment of my invention, certain modifications could be introduced without departing from the principle of my invention; therefore, I intend to cover any such modifications which come within the meaning of the appended claims.

Iclaim:

for reciprocation in a-linear path/the combination of front registering guides on said cylinder, a sheet support, and sheet controlling means operative to swing into the plane of a sheet placed onto said support and including at least one flexible element adapted to engage the top surface'of such sheet, to therebyurge its leading edge into contact with said guides and hold it in'registered position on said support. V I

2. In a printing press ofthe class specified, and including an impression cylinder mounted for reciprocation in a linear path, the combination of ront registering guides on said cylinder, a sheet support, sheet controlling means operative to swing into the plane of a sheet placed onto said support and including at least one flexible element adapted to engage the top surface of such sheet, to thereby urge its leading edgeinto contact with said guides and hold it in registered position on said support, and additional means effective during the movement of said controlling 1 registeredposition on said. support. I 1 6; In combination'with a sheet registering deviceflarranged ,to' be swung from an inoperative, raised position intothe plane of a sheet support-' ing member for registering a sheet thereon, the

provision of sheet controllingmeans including, at least one flexible element arranged to move with said device and'into engagement with'fthe top 2,272,045 means into the plane of a sheet, and while atr'est, I leading edge to straighten out and hold down the of a sheet'to be registered.

, 3. Ina printing press of theclassspecifiedand including an impression cylindermounted for re- I ciprocation in a linear path, the combination-of} front registering, guides on said cylinder, asheet support, movable side registering meanscooperatively associated with said'support, andsheet controlling means movable with the latterand operative to swinginto'the plane of a sheet placed j onto the support and including at least onefleX- ible element adaptedto engage the top surface of such sheet, to thereby urge its leading edgeintocontact with said guides and hold it in registered positionon said support. I

4. In a printing press of'the class specifiedgand including an impression cylinder mounted for, r'e- 'ciprocation in a linear path, the combination of i front registering guideson said cylinder, a sheet support, movable side registering means cooperatively associated with 'said' support, sheet oontrol ing means movable with the latter and op? erative to-swing into the plane of a sheet placed onto said support and including at least-"one flexible element adapted to engage the top surface of such sheet, to thereby urge its leading edge into contact with said guides and hold it, "in registered positionon said support, andadditional means effective during the m'ovementof said controlling means into the plane of a sheet, I and while at rest, to straighten out and hold down the leading edge of'a sheet to be registered,

5. In a printing pressfof the class specified, and

I including a rotary impression" cylinder mounted for reciprocation in a linear path, the combination of front registering guides on said cylinder, a sheet support arranged to reciprocate with said cylinder, and, sheet controlling meansoperative to swing into the plane :of a sheet-placedonto said support, during the reciprocatory movement of said cylinderand table, and including atl least' one flexible element adapted to engage the top surface of such sheet, to thereby urge itsleading hold it in edgeinto contact with said guides and surface of a sheet to :be jregistered,-:-tothereby urge the leading edge of said sheet intoicontact tering guidesand hold it in registeredposition-on said member. I

'7. In combination with a sheet registering d ewith the front reg vice arranged to be swung from anin'operative,

raised position into the planej of a sheet supporting memberfor registeringa sheet thereon, 1 the provision of sheet controlling-means includf,

'ing, at least one flexible element arranged to move with said registering device and into engagement with the top surfa ecf'a sheet to be registered, to thereby urge thev leading edge'of said sheet into contact front registering guides and hold.

it in registered:positioni onsaidmember, and additional. means effective du ring the movement'of said controlling means into. engagement with i the v I atop surface of asheetito be registered; andwhile I at rest, to straighten out and holdlfld'own the "Pleading edge :0ffa sheet to be registered.

In, combination with a heet registering de gvice' arranged-,to be swung froman' Iinoperative, H

- ing member. forregistering a sheet thereon, the .provision of sheet controlling means including at least-one flexible element carried by said registering deviceiandarranged to move with the ofa 's'heet'to be registered; to thereby urge the I leading edge of said, sheet into contact with front,

' registering guides and" hold it in'regis'tered posi tion on said member,and, additional meaInsals/o, movingwith saidjdevice ,andjeffective during the.-

, movement-of said deviceinto'the plane ofa sheet .;;'on said supp'ortingrlmember, and while at rest,,to

of a sheet to be registered; I 1 I 9. m combination with va, sheetaregistering device arranged to be swung'from an-inoperative,'

g'agernent with the top surfaceofrsa sheet to be registered, .to therebyurg'e the leading edge of said; sheetinto contact with the front registering guides, and hold it .in registered position on saidj member, a micrometer device for adjustment of f said flexible element or'elements with relation to a, sheet on said supporting'mem beniand 'addi- I tional adjustablemeans effective during the r movement of said controlling means into engagemerit with the top surface of asheet'to be regist e'red, and hile at rest,,",to- :straighten out and hold down the le ading Yedgeof a sheet tobe registered.

, yicearran'gedto be "swung from an inoperative,

'raise'dfposition into the plane of a sheet supporting member for registering a sheet thereon; l the provision of sheet controlling means includl atter andintoengagernen'twith the tQp' surface of 'ajsheet to be registered, v to threbyurge'the I I 4 leading edge ofsaid sheet-' intoconta'ct' with. the 1 front r egisteringgu ides and'hold it inregis tered f. I positlonion saidsupporting member, a mic'mme- 1 ,ter' devic e for adjustmentofjsaid'flexibleelement 3 orlem'entswith"relationito alsheet on s aid-supv porting member, andadditional;adjustablefmeansA also movingiwith saiddevice and effective during'. e the movementfof said'controlling meansinto enggagem m with the top surface of a sheet to be registered, nd while atL r e st, tostraighten-out' adin g edgeof a sheet to be and hold down the I I registered.

raised position'into thegplane' of asheet support latter and into 'engagementawiththe top surface I s'traighten'out andholddown the leading edge;

raised position into 'the plane of 'a sheet -sup- [porting member fon-registering' aisheetthereon,

the provision of sheetfcontrolling means includY- ing, at leastione flexible I element arranged to" movewith said registering device 'a nd into en-Q g 10; In combination with a sheet"registering deing', atleast. one flexible element carried by said I registering device andfarranged, tofmove with the I I EDWARD EDUDLEY, I I

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