US1438461A - Lithographic-printing press - Google Patents

Description

A. S. N. OLSON.

LITHOGBAPHIC PRINTING PRESS.

APPLICATION FILED MAR-28,1919.

8 d4 6. t n e t a D l IIHEH A. S. N. OLSON.

LITHOGRAPHIC PR|NT |NG PRESS. APPLICATION FILED MAR. 28, 1919.

1,488,461 Patented Dec. 12, 1922..

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LITHOGRAPHIG PRINTING PRESS.-

' APPLICATION FILED MAR.28,1919.

1,438,461. Patented Dec. 1251922 4 $HEET$-SHEET 3 FIG, I].

1 W A ro/MEX A. S. N. OLSON.

LITHOGRAPHIC PRINTINGPR ESS.

APPLICATION FILED MAR. 28, 1919,

1,438,461. Patented Dec. 12, 1922 4 SHEETSSHEET 4.

H6526. PIG-25. 0 1 76 .26 //6 1/7 iii.

//3 k //z I Patented l ec. i2, @222.

ALBERT S. IN. OLSON, OF CHICAGO, ILLINOIS.

LKTHOG-RAEHIC-PBINTING PRESS.

Application filed March 28, 1919. Serial No. 285,830.

To aZZ whom it may concern:

Be it known that I, ALBERT S. N. OLsoN, Chicago, in the county of Cook and in the State of Illinois, have invented a certain new and useful Improvement in Litho- .phic-Printing Presses, and do hereby eclare that the following is a full, clear,

exact description thereof.

My invention relates to lithographic or anographic, printing, that is to say to & :inting from the etched or engraved surfaces of thin metal sheets, such as zinc or aluminum. With such methods or appliances as ordinarily used, it is commercially impracticable to dosmall jobs inv small quantities, because they are not profitable. By m invention, however, it is rendered possible to do jobs of small dimensions, and rvhen small quantities are desired, with profit and by the use of the ordinary platen t terpress.

orenerally stated, the object of y invention is to enable lithographic or pianographic printing to he done economically so as to render it available in fields from which it-has heretofore been excluded, because of cost, and, in particular my object is to enable such printing to he done with an ordinary platen letterpress. A. special object of my invention isto enable ollset lithographic printing to he done on an ordinary platen letter press.

In the accompanying drawings 1 illustrate one way by which my invention can be carried out in connection with and in the form of an attachment to an ordinary platen 4 letterpress iii-which drawings Fi zl is a core ective view of an ordib i i naryv Gordon letterpress provided with an attachment embodying my invention;

2 is a front view of the chase and bed I for holding the engraved metal sheet;

Figs. 3 and t are respectively side elevations thereof, showing the lowered and raised positions respectively of bearers for preventing contact of the ink rollers with the printing form when, that is desired;

Fig. 5 is a detail View in vertical section on the lines 5-5 of Fig. 2';

6 is a vertical section on the line (S of Fig. 2;

Fig.7 is a detail View in side elevation of the mechanism for raising the movable bearers from the feed board of the printing press; the position of the parts when the bearers are raised being shown;

Fig. 8 is a similar View showing the position of the parts with the hearers lowered;

Fig. 9 is a detail top plan view of the inking and dampening rollers;

Fig. 10 is a detail view thereof in side elevation;

Fig. 11 is a detail view of one of the bearer-bars for controlling the positions of the inking and dampening rollers in passing over the inking plate or disk;

Fig. 12 is a detail view in side elevation of one of the hracket devices for supporting and attaching the dampening rollers to the inking rollers;

Fig. l3 is a front elevation of the water fountain for supplying water to theldampening roller;

' Fig. 14 is a vertical section through the fountain with parts'in side elevation;

Fig. let is a detail View in vertical section of the lower part of said fountain;

Fig. 15 is a detail view in section of one of two similar devices at each side of the press frame for attaching the water fountain thereto;

Fig. 16 is a detail top plan view thereof; Fig. 17 is a detail view in side elevation of v the dampening roller bearer-bar;

Fig. 18 is a side elevation of the blanket carrying frame and its supporting and actuating devices, and the gripper for holding the paper to the platen;

Fig. 19 is a detail View of one of the frame latch wheels;

Fig. 20 is a detail side View of one of the 9'0 paper grippers;

Fig. 21 is a like View of the spring that acts on the grippers;

' Fig. 22'is a detail view of part of the .blanket carrying frame, and its rotating de- Figs. 23-2 are" detail front and edge viewsrespectively, of the wheel and gear.

"for rotating the blanket carrying frame;

Fig. 25 is a detail view, in perspective of cctnsnng device e:

'psrticuis'r description the bed the mechanism for raising, lowering, rotst in and iockin the blanket frame 21 h 7 Fig. iidis s deteii View of the bianket rototing bars of said mechanism;

Fig. 2? is 2, front eieva-tion of :3, portion oi the Poisnket frame and its said operating and locking mechanism;

Fig. 28 is s, deteii View, in perspective of one corner of the blanket frame, with. the parts shown separated;

Fig. is iike V-liBW off one of the side supporting bars;

Fig. 3-9 is a side elevation of one of devices rotste He wheei ietcii;

Fig. is e, dete] perspective View of the nciied to the press pitmsn actuating; tne bianket .Zrenaeinecn enisin.

The Gordon press shown in the drawing being well-know n construction needs no beyond saying it comprises frame 10, a chase ii, an initdisk 12, e platen i3 and poweropereted platen swinging mechanism which need no no psrticnioriy described The discovery winch mode which results in the attainment of the o ogect of my invention, is that by supporting a, thin meted sheet having inked pmnting face upon it plane or fist snl'tsce end pressing thereogeinst the sheet to toe printed by e dot on plane platen,

and with the even piessui'e iitiiogi'spiiic K planogr nine printing can ioe snccessfniiy end seti 'octoi'iiy done. The importsnt considerations 'tiiepress, therefore, are its possessions of the characteristics of two opposing fist or nienesnrfsces between which the engroved piste and the sheet to be printed are pressed. Since iithogi'eptiic oi pinnogrephic printing requires e water to pi'intin piste on i :in, it wiii be found tiist my 11 vention provides nioisteningnoesns; and it will oiso betonnd thot' s specie}, construction of is desineioie but no sniistsntiei nitsrstion on modification of the es constructed for ond'insryjnse is required, so that for time practice of my invention the sppiiences o devices necessory may exist in the form of an attachment to the poirticniei'iy to Figs, 1 to i it will be tiist the chose it ties thev uses-i fist i'eetnngnisr from-e town Within it is secured o, bed 1 in the form of: n SOilCi siefo or iJiGCk, whose outer face is fist oi piene,

and is situated snbstentisiiy type-nigh. Stretcied tightly oven the fist out-es face the bed. id is the sheet metal "printing piste 15., its top endbottom edges cieni oed 4 Y it is stretcned Light and smoo n over the bed. The is oni edge of said slots is cieni oed between V eiiottoinof end cisniping be? id The lower side 0:5 shinning oer 16 has sevei'si inclined on wedge-shaped sadness and between inssnoi the some and the adjacent bottom her of time chose is s iongitndinsiiy siido'bie nor on qu-oin 1? with simiieriy ineiined faces that engage those of the clamping can 16. The-clamping her 16 is restrained fnoni endwise U1 sidewise movement by seversipins 18 which are seemed to the bottom of the chess end pass throngiisiots 19 in the qnoin 17 and into holes in the con 16. in a. space between the top of the bed 14: end the top ions of the chose there is e venticeiiy movsioie clamp that consists of two bars 20 end 21 with correspondingly shaped irregnisnop= posingbetween which the upper edge of the printing sheet 15 is i'i1oped and securely Z a "by the action 032 sevei'si screws 2%, that oin the two oars. At internals the upper r of the chase has SGV'BIEti Veiticei screws whose lower ends engage threaded said screws 23 in the proper direction to do so the stomping boss gripping the upper edge of the printing piste wiii Toe drawn upward, and thus stretched tightiy over the fist face of the bed 14. i

There one two iesther-oovei'ed ink rollers- 24: jonrneied es nsnoi at their opposite ends in bioeizs 25, that one cemied by the usual ievei at each side ot the press, upon the spindies 01 stocks of which are mounted nesting reliefs so, that possovei' the usual bearers *2? on opposite sides of the press, said inking noiiers es nsuoi passing beck end forth over the ink disk and the printing itoi'in in advance of the inking i'oliei's 2 1' is s teit covered moistening roiier 28 which at each end has a stock on spindle that is jonicnoied in a block 29 that is connected with end receiales motion from the notice i ibnnting iever. The dampening soiiefr stock on spindie is sested in on open ended siot 30in the block 29, the open end being ciosed by s Iffililfl-VtthiE piste 31, this onrongement being employed for the sppiicetion end removal of the Neck 29 without nem oving or disturbing the dampnoiien Each ioiock 25) has on its outer side on own on extension 32 which hes journei noies its ends for the ointies of two sin'oii roiiei's thet iie psi'siiei, end have contsct, with the dampening 'roiieix Une of the smaii roiieirs 33 aids in distcibnting moisture over the snsfece oi? the dampening roller (moisture being snppiied thereto es hereinsitter desci'ibed} said noiiei 33 being prefer- .eioiy felt covered, white the otherroilieifidis of .by a cem slot 8d-in thc underside oat-the,

some stationary port of the printing pressframe and by the rocking of the lever 81, the desired lifting end lowering movements of the plates '34: are produced. lit is desireble, as a matter of greet convenience,'to effeet the movements of the plates 74 from the feed board of the printing press, 11 accomplish that by providing; a. her 83 having a handle end 8 1- at-the teed end of the press and extending thence in a more or less irre *uler she; e because of the re *uireinents of the ordinary printing press, down to a point below and reaching in rear of the lower end of the lever 81 which preferably carries an entid riction roller 85, The bar 83 has a longitudinal movement'front and back of the press which is utilized to cause the rising, and telling of its reer end, or that portion which is below the lever 81; this rising and falling motion being produced lever, and a, stationarily mounted pin or roller87 that enters the slot. When the rear portion of the bar 83 is in its lowermost position, os indicated in 8, it has no eitect on the lever 81, and hence the plates 7d are in their lowered position, As indiceted in'liig. 7,1t opts upon the lever 8lto rock; it in" the direction to lift the pistes 7d,

es illustroted in Figs. land 7. Pivoted to the side oiE the her 83 is a plate 88 which is adopted to he rocked to the position shown in "full lines in Fig. 7 where its ripper edge does not project above the adjacent top portion of the bar-83, or to the position shown in dotted lines which itis considerably above such top portion of the bar 83, and it is normally held in such mised position by the action of a coilsp'ring 89 and so that o hoolr orteeth 2% on its forward end can interlock" with the stationery big 81. projecting from the pin i whichposition of the plates '24: being in their raised position cannot be lowered and which locking.engagement tolres piece when the roller 85 is 0%- or out of contact with the upper edge of the plate 88. The plates i l-may be raised with the press at eny position in its operation except when the impression is on, and etthat time the plates 74 will he ant rnsrtica-lly lowered and locked in a lowered position. When the impression is oil the plates (ti-may be lowered from raised position only when the.

rollers are in a P08111013 higher than the printing plate, or from the time of going on until they leave the inking dish in going on to' the printing plate, so thot the spoil-=4 of the printing, plate by ellowing the in in ing rollers to peso over it when the plate is dry is prevented. To release the latch hook 9O endto lower the latch plate 88 and hold theseme and the shiitin bar 83 in the lower position illustrated in ig. 8, I place i on the shaft 92, with which the usual throw 0% lever 93 is connected, e radial linger 9% arts and I,

' rooster which by the rocking of the shaft 92 is brought in contact with a pin 95 on the latch plate .88 end ceusesthe swinging of the lat ter to disengage its hoolr 90- lroin the stop 91, and so long as by the action ofthe lever, the finger 95 is in the position illustrated in Fig. 8,,the plates 74' cannot be raised so as to form the bearers to keep the inking rollers from touching the printing plate. in the path of etch bea=,rerr0l-ler 4.1 of the dampening roller es the latter traverses the form, is an bar 133, at the side of the chaise, attached to the outer sides of the press frame, which is'shiftable to place its forward edge to and from an advanced plane so that when advanced end said rollers 41' strike and trevel over it, they will keep the dampening roller out of contect with theprinting oi in. Near the top end bottom, said har 133 has two upwardly and rear-= "wardly curved slots 13%, which respectively are engaged by the stationary guide pins 135, to the upper of which. is pivoted o le= ver 136 that is pivotedby e pin 137* to said hermit, and has acorn face 138 that pro jects in the path of the roller d1, so that VVl'lEl'LSillllCk by the latter, said ,lever 136 -will be rocked, and at her 133 moved away from position to engage seid roller 41. spring 138 attached at one end to the lever 136, swings it in the opposite direction and thus moves the bar 133 into roller-engaging position, where it is yieldingly held. Thus taken, A hitch 139, pivoted to the side of the bar 1853, in position to engegethe lever 136 to lock: it and theber 133 from movement, may be employed, said latch being hand moved to end from such position.

' With the mechanism constructed as l have thus for described it, the printing from lithographic'plotes can be done directly uponv paper pieced upon the platen, but an im-.

poi-tent object of my invention is to enable 'ofisetlithography to be done upon an ordinary ploten. press, and l will now describe by what means I have accomplished that desirable end;

O-ilset lithography is done by printing from. the plete on s rubberized or other suitable blenlret; 1d then making-the impres sion from .t latter entire paper, and the plete of course, must be positive. in that case, therefore, the plots. 15, shown in Fig.

LQBSAGI 2 of the drawing, would be a positive plate.

frame which carries the blanket, the blanket being on both sides of the frame so that one fiat side of the blanket is carried against the printingplate and takes the impressionv therefrom, and the opposite side of the.

blanket having previously received an impression, prints the same upon the paper on the platen.

The blanket 96 is secured to .the top and bottom bars 97 of a rectangular' frame, by being clamped thereagainst by a strip 98 for each bar, secured thereto by screws 99.-

The side bars 100 of said frame are in halves with a stud 101 on the end of one half that enters a hole 102 in the end of the other half so as to make a longitudinally slidable con-- ncction to allow adjustment for the purpose of stretching the blanket on the frame with the desired tension. Each half, at its outer end has a threaded hole engaged by a'screw 108 whose head engages a lugld l on a contizruious supplemental side bar 105 lying the halves which thus provides the necessary rigidity for the sides of the blanket frame. At midlength, each side bar 105 has an outwardly projecting -pintle 108, which in one case is pivoted in a bar 10'? and in the other case is pivoted in a similar bar 108,. and said bars 107 and 108, are respectively slidably mounted in supports 100 and 110 that are bolted at their lower ends to the press frame 10, their npper ends extending well above the platen. Journalled at the top of the support 109 is a short horizontal siaft 111,"which on the inner side of the support carries a disk 112 with'a diametrical slot 118 into which an oblong block 11 1 on the outerend oi the pintle 106 in the slidable bar 10'?" is adapted to be moved, when said her reaches the upper limit of its sliding movement, so that disk andv bloc r, are rotatably coupled and. upon the tar ing of the disk the blanket will be'turned. The block 114 slides-in a groove 115 in the support 109. On the other end of the shaft 111 is fixed; a ear .110

upper portion of a bar 118 slidably mount- 'ed on the .outer side of the support 109, as

by bolts or screws 119 and slots 120, At its lower end the rack bar 118 has a stud or roller 121 adapted tobe engaged in succession, by slots 122 in two blocks 128 clamped to the press pit'man 1%, and thereby the rack bar moved, first upward to revolve the disk through a half turn, and then, after a proper interval, downward. to turn the slotted disk 112 backa half-turns, j Duringthese upward and. downward motions of the pitman 12 1 which reciprocate the rack bar and turn the blanket, the platen is motionless and as cession.

orooves in the inner sides of a pair of parailhl, upright stationary on the the platen, the press feeder is in no danger of harm in placing paper on and removing it from the platen. The printing takes place when the blanket is in the lowered position. The rack bar 118 is latched yieldinfgly at each limit of movement by .a spring-pressed dog 1%, on the'support 109 and two ll notchcs 128 in the'rack bar which it engages in suc- The blanket frame in its position for jprinting is latched against accldental rotation. At the extremity of each side bar 105-,

is aN-shaped nose 127, which in turn en gages between a pair of opposing springheld dogs 128, pivoted to a disk 129 on. a cross shaft 130 journalled in the pair of bars 107 and 108 between which saidshait extends. On said shaft 130, outside the bar 108, is a disk 181, which is connected. by a link-lever 132 to a disk 133 on the frame pintle 106 which is journalled in said frame bar 110, the connections of the link lever 132 with the two disks being excentric, and diametrically opposite so that motion. imparted to the disk 133 by the turning of the blanket frame will be imparted to the. disk 131 in the opposite direction, and. which is through a half circle. The link-lever 132 is fulcrumed on a pivot 134 and it is slotted to allow for longitudinal movement. -'lhus the latch disks 129 are revolvedboth to effeet the locking and release of the blanket frame. The dogs 128 are ,springheld to allow for differential movement of the disks and frame. v

The reciprocation of the blanket frame pivoting bars 107 and 108 to raise the frame well above the platen and to return it to proper operating. positiom-is-produced.

@n the secured in the groove in. thestationary sup,

port. As. the platen swings, it. moves the pinion 130 with it, and thelatter traveling overthe stationary rack 138 is'revolved and thus, imparts the sliding" movement to the frame carrying bars 107 and 108- to an or:

1 tent twice the swing of the platen.

The grippers 138 are attached ad'ustahly to a rod 140 pivoted in the ears spring 141 with 'a coil about the rod, engages'the gripper, at one end, and at its other end bears against the arm so as to cause the gripper yieldingly to press against the platen. When the platen swings upward, the rounded upper end of the arm 135 acts on a rejection M2 on the gripper, and therehyli a the gripper v from the platen,

my invention what paper on the platen, said platen being plane and said member having opposite plane I sides.

2.- A platen printing press having a revoluble impression receiving member, situated between the printing surfaces and the platen, said platen being plane'and said member having opposite plane sides, and automatic pression receiving member.

means operatlvely connected with a moving member of the press to actuate said revoluble member.

3. A platen printing press having a revoluble impression receiving member situated between the printing surfaces and the platen, said platen being plane and said member having opposite plane sides and means automatically to revolve said im- 4. A platen printing press having revoluble impression receiving member situ at edbetween the printing surfaces and the platen, said impression receiving member, a half revolution.

through 5. A platen printing press having a blanket supporting frame, a pivotal support for said frame connected with and receiving movement from the platen, and means actuated by the movement of a'press part for rotating said frame through a halt revolution.

6. In printing apparatus ofthe character described, the combination of several sets of rollers, a printing surface over which they are traversable, movable plates alongside said surfaces which the rollers pass, means manually operable from the feed end of the and-means automatically to revolve press for moving said plates, a throw ofi' device, and a member under the control of the latter for rendering said means inactive.

7. In, printing apparatus of the character described, the combination of traveling form 'moistening mechanism, and. automatic means to prevent contact of the latter and the form comprising guides adjacent theform and movable to and from the path of travel of said' mechanism.

8. In printing apparatusiof the character contact of the roller and the form in one 1 direction of its travel across the form comprising guides adjacent the form and movable to and from the path of the roller-carrying mechanism.

9. In a printing apparatus of the character described, the combination of traveling roller form moistening means, a water receptacle placed below the press bed, a traveling bod which tlie rnoi'steninfg roller moves, a water reservoir and automatic means to control the supply of water to said receptacle. from said reservoir comprising a pipe extending from the top of the reservoir to the receptacle.

10. A platen printing press having a revoluble impression receiving member, situated between the printing surface and the platen, in combination with a press pitman and means actuated. by the latter to control the turning of said member. p

11.- A platen printing press having a rcvoluble' impression receiving member situated between the printing surface and the platen, means for revolving said member,

and a locking device to restrain turning of said member at a predetermined time.

of absorbent material to and from in testimony that it claim the foregoing, I

have hereunto set my hand.

ALBERT s; N. oases,

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