US2226515A - Printing press - Google Patents

Description

Dec. 24; 1940.

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L. Q. PRESBY PRINTING PRESS Dec. 24, 1940 Filed June 1, 1938 '4 Sheets-Sheet 4 1 o yfllres yg @960 m JA 7 W! at Patented Dec. 24,1940

NITED STATES PATENT OFFICE PRINTING rnnss Leroy Q. Presby, Melrose, Mass., assignor to American Stay Company, East Boston, Mass., a corporation of Massachusetts Application June 1, 1938, Serial No. 211,163

13 Claims.

, the invention, the scope of whichlatter will be more particularly pointed out in the appended claims.

In the drawings:

Fig. 1 is an end elevation of a press constructed according to the invention with parts broken away and parts omitted;

Fig. 2 is a plan of the pres according to Fig. 1 with parts omitted;

Fig. 3 illustrates part of the elevator mechanism for the ink fountain corresponding to an elevation of Fig. 2 as viewed from the right;

Fig. 4 is an elevation of the press according to Fig. 1, as viewed from the left of the latter, with parts broken away;

Fig. 5 is a section on the line 5-.-5 of Fig. 1;

Fig. 6 illustrates a detail;

Fig. 7 is a section of the line 'l'! of Fig. 6;

Fig. 8' is an elevation of a fragment of. the end of the ink fountain;

Figs. 9and 10 illustrate the ink fountain in,

different operative positions, respectively, and are plans of the press corresponding 'toFig. 2 with parts omitted; and

Fig. 11 is a plan on a reduced scale corresponding to Fig. 2 with parts omitted.

Referring to the drawings, which show the preferred embodiment of the invention, the press comprises a frame having a base I, which latter supports the vertical side standards 3, the base being formed with an opening '5 as is clearly illustrated in Fig. 10.

Carried by the standards-3 are bearings I for .the'shaft9 of the printing cylinder I I As shown, this printing cylinder is driven from a horizontal shaft I3 carried by one of the side standards, the latter being provided with projecting bearings l5 for supporting the shaft. The shaft I3 may be driven in any suitable way (not shown), and may be of such length as to drive the printing cylinders of a plurality of printing couples arranged in a row for operating on the same web. Herein, the shaft l5 has fixedly secured thereto a worm I! with which meshes a worm wheel l9, 9. gear 2| coaxial with the worm wheel and rotating therewith meshing with the gear 23 on the shaft 9 of the printing cylinder so that the latter will rotate when the-shaft l3 rotates.

As illustrated, positioned between the stand-- -ards' 3 in operative relation to the printing cylinder H is an ink fountain 25, the bottom of the ink chamber of. which has a depressed portion 21,the upper surface of said portion being approximately coaxial with the printing cylinderp elow the bottom of the ink chamber the fountain is' formed to provide a chamber 29, the op-- posite end walls of which have openings 3|. To

each of these openings is connected a projecting pipe 33 terminating in a union fitting 35 for detachably connecting to the pipe a length of fiexiblehose 31. By means of these hoses and their connections to the chamber 29 hot or cold fluid, if desired, may be circulated through that a bar 43 forming part of an ink agitator. To this 7 bar are connected the vertical terminal portions 45 of a plurality, of spaced fingers, the fingers havingformed integrally with the portions 45 thereof projecting portions 41 conforming closely to the surface of the bottom of the ink chamber.

In an obvious manner by reciprocating the bar 43 the fingers connected to said bar will agitate I the ink.

Herein, for reciprocating the bar 43 is provided 'a parallel reciprocatory rod 49 mounted on bearings 50 in the opposite standards 3. Intermediate its length the rear wall 5| of the ink'fountain at its upper edge is-notched as shown at, 53. Carried by the bar 43 in position to extend through this notch is a spacer 55 for securing to the bar the vertical leg 51' of an angle bracket. The lower leg 59. of this bracket carries a cupshaped member- 6| within which is reciprocably mounted an upwardly projecting pin 63, the latter being urged in an upward direction by a coiled compression spring 65 as will be clear from Fig. 7. The lower side of the reciprocatory bar 49 adjacent its center portion is shown as flattened at its under side as indicated at B1, and to this flattened in alignment the pin will slidably bear against the lower surface 13 of the plate 69, and that reciprocation of the bar 49 will move the notch i-nto alignment with the pin, whereupon the pin will snap into the notch and cause the agitator to operate.

For reciprocating the bar 49 the latter at one end at .the exterior side of the adjacent standard 3 is shown as flattened as at 15 (Fig. 2). Embracing this flattened portion of the rod is the bifurdrive shaft is the gear 81 (Fig. 4) which meshes with the gear 89 rotatably supported on a bracket 9| secured to the outer side of the adjacent standard. Fixed to rotate with the gear 9| is a pinion 93 meshing with a gear wheel 95 rotatabl y carried by the bracket 9|. The last mentioned gear wheel has an eccentrically positioned projecting pin '91 which extends into the slot 99 formed in thelower end of the lever 19. In an obvious manner when the shaft I3 is rotated the pin 91 will rotate about the axis of the gear wheel 95 and cause the lever to oscillate on its pivot 85, which oscillation is effective toreciprocate the bar 49.

As illustrated, for supporting the ink fountain 25 there is provided a pair of fiat bracket members IOI each of which is fixedly carried by a shaft I03, the set screws I04 providing for ad'- justment of the bracket members longitudinally of the shafts. As shown, the shafts are'mounted for vertical reciprocation in bearing brackets I05 secured to the inner sides of the standards 3. Conveniently, each of these brackets at its upper side has an upwardly projecting lug I01 (Figs.

' 1 and between which lugs of the respective brackets the ink fountain fits lengthwise. Also each bracket at opposite edges of its upper side.

has an upwardly projecting lug I09 between which the ink fountain fits transversely. In this way the ink fountain when placed on the brackets IIII is accurately positioned relative to the printing cylinder.

For simultaneously raising and lowering the shafts I03 each is provided on one side'thereof with rack teeth III (Fig. 5) with which meshes a pinion H3, the two pinions being fixedly carried by a horizontal shaft H5 journalled at opposite ends in the standards 3. At one end the shaft I I5 projects through the adjacent standard, and at the exterior of the latter fixedly carries a worm wheel H1. Above the worm wheel is positioned a horizontal shaft I19 which is journalled in bearings I2I carried by the adjacent standard 3. At one end the shaft H9 is provided with a hand wheel I23, and at its opposite end with the worm I25, the latter meshing with the worm' wheel H1. By reason of this construction rotation of the hand wheel is effective to raise and lower the shafts I93 which operatively support the ink fountain, the mechanism by reason of the meshing worm and worm wheel holding the ink fountain in its adjusted position. As will be obvious, the ink fountain must be raised and lowered' to accommodate cylinders of different diameters and to permit removal of the ink fountain when it is desired to substitute fountains of different sizes, or to remove the ink fountain for cleaning purposes.

For removing the ink fountain from between the standards a swinging arm I21 is provided,

shown, the projecting ends of the spindle at op posite sides of the hub are pivotally mounted in bearing brackets I33 fixedly carried at the inner side of one of the standards adjacent one edge thereof. At its opposite end the arm I21 is integrally formed with a hub I35 having a vertical perforation I31 in which is swivelled a pin I39. This pin is fixedly secured to a support for the ink fountain, which support for convenience of terminology is herein called a table. As shown, the pin I39 is fixedly carried by and projects downwardly from the under side of afiat bar I. At opposite ends the bar I4I carries fiat bars I43 arranged transversely thereof. The bars I43 at their outer edges at each end are provided with upwardly projecting lugs I45. When the parts are in the position shown by Figs. 1, 2, 5, 9 and 11, by turning the hand wheel I23, the brackets IIII which support the ink fountain will be lowered to lower the fountain and place it upon the table carried by the swinging arm I21, the bottom ofthe .fountain when placed upon the table resting upon the fiat bars I43 with the fountain positioned thereon by the lugs I45, the inner sides of which latter are spaced apart the same distance as those of the lugs I09 on the brackets I|II,'as will be clear from Fig. 5. The arm I21 may then be swung on its pivot to move the ink fountain from between the standards, the

swivel connection of the table to the arm permitting the table to be turned so that the fountain will clear the standards and,the parts carried 'by them during the swinging movement. The

fountain may then be removed from the table and placed on. a truck for transporting it. A truck of the elevator platform type is preferably used for that purpose. I 7

As illustrated, one of the bars I43 adjacent each end thereof on its under side has secured thereto a bracket having a downwardly projecting leg I41 (Fig. 5), which legs are adapted to contact with the upper ends of posts I 49 carried by the base I of the frameof the press when the parts. are in the position as illustrated in Figs. 1 and 5. It will be observed by this construction that when a new fountain is placed upon the table carried by the swinging arm and the arm is swung to move the fountain between the standards one of the brackets I41 will strike one of the posts I49 and as a result the table will I thereto.

As illustrated, the fountain at one side thereof at its top is provided with a cover member I5I opposite ends of which have lugs I53 (Fig. 1) removably received in notches I55 formed in the opposite 'end .walls39 of the fountain. At opposite ends the cover has wings I51 embracing the ends of the cylinder. The outer sides ofthese wings are formed with lugs I59 through each of which extends a screw I6I adapted to rest upon the upper edge of the end wall 39 of the fountain. By adjusting these screws the'cover Ilil may be swung on its lugs I53 to adjust it relative to the cylindrical surface of the printing cylinder so as to compensate for different diameters of cylinders. Preferably, at the inner side of the cover adjacent its upper edge are'secured one or more blocks of soft rubber I63 to prevent the cover from accidentally injuring the surface of the printing cylinder. It will be observed that the cover I51 in conjunction with 5 the doctor blade I65 acts to enclose the fountain except for a relatively small portion of its upper surface adjacent .the impression cylinder I61, this preventing excess evaporation of the ink andhardening of the residual amount thereof that 10 remains on the cylinder after it operates upon the web.

It will be understood that within the scope of the appended claims wide deviations may be made in the form of. the invention described without l5'departing'from the spirit of the invention. It will also be understood that the elements herein designated an ink fountain and a printing cylinder are referred to as such only for convenience of terminology and are not limited to 20 use with ink or for ordinary printing, but that the fountain may contain various lacquers, waxes or coating compounds to be applied to the web by the cylinder as may be desired, the provision for heating the fountain rendering it possible to 25 maintain the wax in a liquid state if solid at room temperatures.

I claim:

1. A printing press having, in combination, an ink fountain, a roll dipping into said fountain, and

30 means for raising and lowering said fountain and for moving it when lowered from beneath said roll, which means comprises a movably mounted fountain support and an elevator for placing the fountain on and raising it from said support 35 2. A printing press having, in combination, a

frame comprising side standards, an ink fountain between said standards, and means for raising and lowering said fountain and for moving it when lowered from between said standards, which 49 means comprises a movably mounted fountain 7 support and an elevator for placing the fountain on and raising it from said support.

3. A printing press having, in combination, an ink fountain, a roll dipping into said fountain, a table mounted for movement in a horizontal plane, and an elevator for said fountain adapted to lower and raise it to place it on and remove it from said table.

4. A printing press having, in combination, a 5 frame comprising side standards, an ink fountain between said standards, a table, means supporting table for movement in a horizontal plane adapted to move said table from between said standards, and an elevator for lowering said foun- 55 tain while between said standards and placing it on said table and for raising it from said table. 5. A printing press having, in combination, a frame comprising side standards, an ink fountain between said standards, a table,'means supporting said table for swinging movement in a horizontal plane adapted to move said table from between said standards, and an elevator for lowering said.

fountain while between said standards and placing it on said table-for raising it from said table.

6. A printing press having, in combination, a frame comprising side standards, an ink fountain between said standards, a table, means supporting said table for swinging and swiveling movement in a horizontal plane adapted to move said table 70 from between said standards, and an elevator for lowering said fountain while between said standards and placing it on said table and for raising it from said table.

7. A printingl press according to claim 5, in

which the means forsupporting the table for swinging movement is an arm pivoted about a vertical axis adjacent one-of said standards.

8. A printing press according to Claim 5, in which the means forsupporting the table for swinging movementis an arm pivoted about a vertical axis'adjacent one of said standards, the table also being swiveled on said arm about a verticalaxis.

9 .A printing press having, in combination, an ink fountain, a roll dipping into said fountain, an ink agitator associated with said fountain, driving means for said agitator, means for moving said fountain into and out of association with said roll, and an automatically engaging and disengag gv connection between said agitator and said driving means operated into engaging position by movement of said fountain-into association with said roll and operated into disengaging position by movementof said fountain from that position.

10. A printing-press having, in combination, an ink fountain having a movable ink agitator, means for operating said agitator, said fountain being movable toward and away from said means, and an automatically engaging and disengaging connection between said agitator and said means so operated by movement of said fountain toward and away from said means.

11. A printing press having, in combination, a. support, an ink fountain carried by said support in movable relation thereto, an ink agitator supported by said fountain, mechanism carried by said support for operating, said agitator, and a detachable connection between said agitator and said mechanism automatically operated for making and breaking the connection by movement of 40 said fountain relative to said support.

12. A printing press having, in combination, a support, an ink fountain carried by said-support, an ink agitator carried by said fountain having a reciprocatory part reciprocation of which operates said agitator, a driven reciprocatory member carried by said support for operating said reciprocatory part, and a detachable connection between said part and member automatically operated for making and breaking the connection by movement of said fountain relative to said support. v

13. A printing press having, in combination, a support, an ink fountain carried by said support, an ink agitator carried by said fountain having a reciprocatory part reciprocation of which operates said agitator, a driven reciprocatory member carried bysaid support for operating said reciprocatory part, and a detachable connection between said part and member comprising a rela tively movable part carried by one of them and a portion on the other adapted slidably to contact with said part, which portion is formed with a notch into which the last mentioned part is adapted automatically to move when the latter and said notch are brought into alignment, the direction of movement of said fountain relative to said support being such asto disengage said last mentioned part from said notch.

LEROY Q. PRESBY. 7o

CERTIIIFICA'I'E OF comcflon. r Patent No. 2,226,515. A Degember 21;, 19m.

' LEROY Q. FRESH-Y.- v It is hereby certified that error appears in the printed specifieation of the above numbered, patent requiring correctionas fellows; Page 5, first columnyline 52, cleimh, before "table" insert --said--; and that the said Letters Patent should he read with this correction therein that the same may confonn to the record of the ease in the Patent Office.

Signed and sealed this. 28th a of 'J'enuery, A. D. 19b1,

I Henry; Van Arsdale, (3 Acting Comiesioner of Patents.

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