US1473649A - Platen printing press - Google Patents

Description

Nov. 13 W23. 1,473,649

A. SCHLESINGER PLATEN PRINTING PRES 5 Filed 060115. 1921 5 Sheets-Sheet 1 A. SCHLESINGER PLATEN PRINTING PRESS Nbv. 1351923. mfimw Filed Dec. 921 '5 Sheets-Sheet 2 Nov. 13 11923.

A.SCHLEQNGER PLATEN PRINTING PRESS Filed Dec. 15. l92l 5 Sheets-Sheet 5 A. SCHLESINGER PLATEN PRINTING PRESS Filed 8 15, 1921 5 Sheets-Sheet 4 1,473,649 A. SCHLESINGER PLATEN PRINTING PRESS 5 Sheets-Sheet 5 Filed Dec. 15 921 of said lever Patented Nov. l3, i923.

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ALFRED SCHLESIIGGER, F DUSSELDORF, GERMANY.

PLATE-N PRINTING PRESS.

7 Application filed December 15, 1921. Serial No. 522,646.

cZZ iii/tom it may concern: 7 c it known that I, ALFRED SCI-ILESINGER, erman ritizen, residing Dusseldorf, Ge many, hare inventedcertain new and useful 11 -provements in Printing Presses, of which the following is a specification.

My invention and'more part platen pressesi which are provic. t wi' a substantially stationary term and a platen ace ted to reciprocate in a horizontal pl e. is an object my invention to i iprove the operaor such presses in general and of the platen, the i l for feeding t i In platen presses here store in use the platen is arranged to roar as a whole, beattached to a heavy block and swinging during each operation from the vertical position of printing into the approximately h Qzontal position of feeding and back Owing to the necessity of moving a nd consumes nl-iing cylinders and the means is heavy masses a press 0" this hi it good deal ofenergy and requires a heavy flywheel.

the platen press according-to nay inven 'tion, the platen is permanently moved in a positionparallel to'the form. only the reg- 'ster ate, movably' connected ierewith being .mparted a rocking motion whereby inurh energy is'savcd and flywheel can be dispensed with. .lhe register plate can moreover be readilydisconnected so that it can be removed for the purpose of registering and the press can in the meantime be used for other work. 7

in the platen presses hitherto used the ink roller carriage is generally moved across *"ibuting cylinder by means of a sys ll levers which is actuated from a crank on the main shath the carriage being arrestin its u pe most position by lifting one 'ording to the present invention. the ink roller carriage is controlled the platen.- actuating by means of a rod auapte to be thrown out. a rocking lever connected with the roller carriage by a link.

whose point of engagement is moved beyond the 1 ad centre position when the roller carria is in its highest position. Uwing to the arrangement the roller carriage i. held in ts highest position by its actuating levers without a counter weight required. 'lhis manner of operating the =z=arriage by the platen. is very simple and at the same time causes the ink rollers to move slowly across the distributing cylinder but rapidly across the form.

The ink rollers are arranged in a bearing on the roller carriage and run on wheels cured to their shafts over guide rails at either side oi the form each rail having two treads at difierent levels and ending in a sort of switches which cause the wheels of one of the ink rollers to run on one or the treads in one direction and back on the other, so that this roller is in contactwith the form only when moving in one direction, but is lifted from the form when moving in the opposite direction.

The novel press is further provided with an automatic feeder comprising a suction nozzle secured to rock levers controlled by the platen. The nozzle gathers the sheets, one by one, from the pile and places them on the'register plate. The reglet is provided with grippers which are actuated by catches secured to the suction nozzle and to the frame oi the press, respectively. The grippers hold the sheet after it has been fed and allow it to drop when the platen is withdrawn from the form.

In. the drawings atlixed to this specification and forming part thereof, a platen press embodying my invention is illustrated diagrammatmally by way of example. in the drawings Fig. l is an elevation, not shown.

Figs. 2 and 3 are similar views illustrating other positions,

l ig. at. is an illustration of the device for disconnecting the ink roller carriage,

5 is elevation ot the guide rails for the ink rollers. and

Fig. 6 is an elevation of one oi thescrails, Fig. 7 is a SGillTlOll on line 11-45 of Fig. 6, Figs. 8 and 9 are elevations of the pneumatic feeder in different positions,

Figs. 10, it and 12 are detail views illustrating the operation of various parts connected with the register plate.

the feeder being .Referring now to 1 to 3, the platen slot 7.

rock but is also displaced longitudinally in relation to the platen. lit the lower edge of the register plate 6, eyes 9 are provided at both sides in which there are pivoted levers 11 adapted to turn on p'ins 10 of the platen, and links 12. The links 12 are slotted at 13 and engage pins 14: secured to the frame 3.

When the platen moves away from the form 15, so as to assume the position illustrated in Fig. 1, the register plate 6 is raised by the cooperation of the links 12 and arms 11 until it assumes the inclined position shown in Fig. 1. In this position the bar 8 lies at the lower end of the guide When the regist r plate occupies this position, a sheet is fed.

The rods 4; now draw the platen 1 to the left toward the form 15. The register plate .6 sinks down by its own weight along its guide 7 and is carried into a vertical posi- 'tion by the arms 11 and links 12, thus being positioned in parallel to the form 15 and immediately in front of the platen, as shown in Fig. 2. This occurs a short time before the platen is pressed against the form 15. During the last phase of the stroke of the platen, from the position illustrated in Fig. 2 to'tlie position illustrated in Fig. 3,

the register plate is advanced toward the form in a position in which it is exactly parallel to the latter. The links 12 are inoperative at the time, their slots 13 being so long that the links can slide upwards for the required distance on the pins 14E during this movement,

hen the platen is on its return stroke, the movements occur in reversed succession. In order to prevent a displacement of the register plate 6 at the moment of printing 7 and to assure a. clear print, the register plate 6 may be provided with pins or the like at the back which, when the plate is in its vertical position, enter corresponding rec esses in the platen and securely hold the register plate in position.

The ink rollers 16 and 17 are supported in bearings 18 on either side of the press,

' levers 21 and are'drawn into the levers by springs (not shown). The levers 21 are connected at their rear ends by a bar 22 to which is pivoted alink 23.v This link is connected to a double armed lever 25 adapted to rock about ashaft 2% carried in the frame 3. The other armof said rock lever is connected by a'link 26 with an extension 2. of the platen 3. When the platen moves away from the form, the rock lever 25 is turned on its shaft 2 1 so that the rollers 16, 17 are caused by he levers 21 to move downwards across the form 15 until they form, the arms 21 are rocked in opposite direction until the rollers 16, 17 have reached their upper position as illustrated in Fig. 2. The double armed lever 25 is arranged with regard to the roller carriage and the piston in such manner that its point of connection with thelink 23 is just moving past the dead cent-re, when the ink rollers 16, 17 are moving across the distributing cylinder 28, while'at the'saiiietime the pin 29 which connects the double armed lever 25 and the link 26 is as far away from its dead centre as possible. In this manner a uniform movement of the double-armed lever 25 on its pin 2 1 would cause a considerably retarded motion of the roller carriage while the ink rollers 16, 17 are passing across distributing cylinder 28. As, however, the plate also moves very slowly at this mo ment, because the rods 4 are near the dead centres of the discs 5, the double armed lever 25 moves very slowly also, thus further reducing the velocity of the ink rollers 16, 17. (living to this arrangement of parts the time during which the ink rollers are moving across the distributing cylinder 28, is about one third of their entire reciprocating motion. 1

If it be desired to disconnect the roller carriage, the connection between the lever 25 and the link 26 is interrupted. The link 26 engages the pin 29 of the lever 25 by means of an eye 30 which is open at the bottom. An upwardly curved catch 31 on the link extends beyond the eye 30. When the catch 31 is in its end position to the left, as illustrated in Fig. 4, it engages a curved lever fulcrumed in the frame 3 at 32. A rearward extension'of the lever 33 is connected by means of a link 34! with a doublearmed hand lever 35. 'On lever 35 being depressed the curved end of lever 33 will move to the right in Fig. l so as to be engaged by the curved catch 31 when this latter reaches the end of its stroke, whereby the catch is raised. In order to prevent the hand lever 35 from being returned to its normal position by the pressure exerted on the lever 33, the pin 36 connecting the hand lever 35 and the link 34: is caused to move past the line extending through the pins 37 and 38 so thatthe pressure exerted. on the lever 33 tends to move the hand lever 35 further down. The stroke of the hand lever in'this direction is limitedby a stop 39. As the catch 31 and the lever 33 engage, the eye 30 is lifted from the pin'29 so that the pin is not engaged when the link 26 returns. As in the highest position of the roller carriage the point of connection of the'link 23 and the lever 25 above, lies" somewhat to the right of the dead centre, the weight of the roller carriage tends to turn thellever 125 in an anticlockwise direction so that the roller carriage remains in its raised position and does not turn the lever back wardsby its weight. Catches (not shown) prevent further the lever 25 from turning and the linlr 26 fronrdescending further.

The roller carriage remains in the position illustrated in Fig. 3 as long as the catch 31 is lifted by the lever every time it reaches the left hand end or its stroke. When owerer the lever-33 is lowered by aising-thc hand lever 35, the catch 31 is no nger li ted, so that the pin 29 is again enaged by the eye and the roller carriage is reciprocated as before.

The rollers l6, l? are guided by rails at either side of the form 15, as shown in Fig. 5. il heels 12 which are secured against axial displacement are arranged on the axle of the roller 16. Similar wheels 43 arranged on the axle of the roller 17 are adapted to be displaced axially and are forced outwards by springs all. The wheels 42, 43 run on rails l5 having a. higher tread l6, and a. lower tread 4-7. Both treads merge into one another at the upper end of the rails while at the lower end the higher tread 46 is e ryed outwards.

VVhen the roller carriage moves downwards, the wheels l3 which are forced ou wards by the springs run on the higher treads l6 and the fixed wheels 42 on the lower treads 47. The bearings 18 are thereby tilted in such a manner that the roller 16 engages the form 15 while the roller 17 passes across out ot contact therewith. At the lower end of the rails 45, the wheels l3 run oil the treads l6 and are forced inwards by the curved ends of the treads l6 when the carriage starts on its return stroke, the springs ll being compressed, so that the wheels now run upwards on the treads l6. The bearings 18 are hereby caused to be tilted in such manner that during the uprmrd stroke of" the carriage both rollers engage the form. lVhile the rollers are Inoving across the distributing cylinder 28 the heels 4:2 and leav th rails 45 so that he spring as can force the rollers a8 outwards and the wheels will run on the higher tread 46 when the roller carriage moves downwards.

At the front of the press there is arranged a frame 50 (Figs. 8 and 9) in which the sheets to be printed are stored between guides. The pile of sheets is supported by a nioi'aole bottomv 51 which (an be raised by in ans oi a screw 51 in proportion to the feed, sothat the uppermost sheet is always the same level. V The screw 51 is automat cally operated by a ratchet and pawl mechanism (not shown), which an be actuated by any convenient means for instance by the platen. Above the pile of sheets there is arranged a linger 53 held down on the a nber tube (not shown). The nozzle 5 is secured to a ir he 56 to which are linked at either side two .erers 57 and 5S turning on pins 59 and 60 secured to lugs of the frame 50. The levers 57 are extended beyond their pins 59 and the extensions project into the path of rollers 62 carried in brackets (33 of the platen 1. During the last part oi its outward stroke. the platen strikes the ends of the levers 5'? by means oi? the rollers 62 so that the nozzle 55 having engaged the uppermost sheet by suction, moves to the left, opposite the platen, raises the sheet past the right hand edge ol the register plate which is still somewhat raised and, when the platen has reached t-l e end of its outward stroke, places the sheet against the reg let (3 1:. At this moment tl e suction is temporarily interrupted by suitable means, (not shown). ll hen the platen starts on it inward stroke the levers 57 and 58 are returned to their initial positions by springs 65.

The reglet il (F 10 to 12) comprises a sheet metal strip arranged to rock on the register plate 6 and pins {56 which project its upper ends at either side of the register plate 6. The reglet is engaged l; springs (57 which are secured to the r I is plate 6 some distance to the left from and below the axis of rotation of the reglet Gel: so that they tend to turn it to the left when it is at right angles to the register plate, 6 but hold ittight-ly down on the rc "slcr plate when it is turned over to the right. Short arms (38 are arranged at the hinge pin of the reglet (ll intermediate the springs and the edge of the register plate 6.

A spring pawl '70 is secured to the holder 56 oi the nozzle When the nozzle approaches the reglet 64: the reg-let assumes a Vertical position, this being el'lected by means which will be described later on. The pawl DIOVGS beyond the rcglct without turning it over. When the notion is interrupted and the sheet thereby released, it abuts against the reglet til. it this nioinent the nozzle 55 starts on its return stroke so that the pawl '1'0 turns the ree'let 614: orcr to the right whereupon it is tightly held drawn toward the register platexi by the springs 6"! and grips the sheet.

1 the lower end and at either side of the p or plate 6, guide sleeves Tl adapted to n on pins T3 are arranged. Rods 72 which pass th ugh these sleeves support the gripper shat 7i t 3. Underneath the plate 6 each rod 72 carries a nut 74; and a helical &

spring interposed between the nut and the guide 71. The gripper shaft '78 is provided with the usual adjustable grippers (not shown), for holding the sheets and a fixed rod 76 at either end. This rod is connected with the bar 8 ot the platen by a link '77 (Figs. 11 and 12) so that the rod 76 and the grippers ar opened when the register plate 6 moves upwards along the platen 1, and closed, when the plate descends along the platen. As soon as the register plate 6 stands parallel to the form 15 (Figs. 9 and 11), the rods 76 firmly engage the register plate. In this position, the register plate performs the last portion of its stroke until it reaches the form 15. The gripper shaft TS is extended at both ends beyond the rods 76. On either side of the frame 3, there are provided pawls 79 which, when the register plate (3 is pressed onto the form resiliently, engagefrom below the projecting ends of the shaft 78. As the platen starts on its outward stroke, the 'gripper shaft 78 is drawn away from the register plate by the pawls 79 so that the sheet is tree to drop as soon as it is released by the reglet 6% in a manner which will be desrribed later on. As the rods 76 are connected with the bar 8 by the links 77, they will carry out a slight upward movement when retained by the pawl 79 (Fig. 12). In consequence of the rocking arrangement of the guides 71, the rods 72 are capable of following this movement. During the outward stroke of the platen the extensions of the shaft 7 8 are drawn out of contact with the pawls 79,-

whereupon the springs 45 pull the gripper shaft back to the register plate 6. Two pawls 80 are arranged at the base which, when the register plate is pressed onto the platen, engage the pins 66 ot' the reglet 64E. l i hen the plate returns, these pawls cause the reglet 64 to assume a vertical position from which the springs 67 turn it. downwards so that the sheet can drop out. (Fig. 12).

The pawls 79 and 80 are arranged at either side of the base on rock levers 81 which are withdrawn as soon the roller carriage moves across the form, so that the pawls get out of the way of the rollers. For actuating the levers 81, rods 82 may be employed which connect the lovers with arms 83 at the roller carriage.

In order to ensure the dropping out of the sheet, several fine pins 8% are provided at the reglet 64- which raise the sheet and starts its downward movement when the reglet is raised or turned down.

In orderto return the reglet into the position required for feeding a fresh sheet after a sheet has dropped out, rods 85 are linked to the links 77 whose ends are guided in grooves 86 of the register plate 6. The length of the rods 85 is such that they engage arms 68 provided at the sides at the reglet 6 L when the register plate is in its highest position. By these means the reglet is placed in a vertical position.

Underneath the path of the platen 1, conveyer bolts 8? running on rollers 88 are ar ranged. which are actuated by suitable means so as to convey the sheets dropping out of the press into a box 89 which is preferably arranged at the bottom of the "frame.

I wish it to be understood that-T do not desire to be limited to the exact details of construction shown and described, for obrious modifications will occur to a person skilled in the art.

I claim:

l. in a platen printing press in combination, a form, a platen adapted to reciprocate in a position parallel to said form, a register plate and means for applying said plate against and for rocking it relatively to said platen, respectively.

2. In a plat en printing press in combina tion, a form, a platen adapted to reriprocate in a position parallel to said form, a register plate and means for applying said plate against and for rocking it about a point on said platen.

8. Ina platen printing press in combina tion, a form, a platen adapted .to reciprocate in a position parallel to said form, a register plate and means adapted to be actuated by the movement of said platen for applying said plate against and for rocking it relatively to said platen, respectively.

at. In a platen printing press in combination, a form, a platen adapted to reciprocate in a position parallel to said form, a register plate connected with and to be disengaged from said platen and means for applying said plate against and for rocking it relatively to said platen, respectively.

5. In a platen printing press in combination, a form, a platen aeapted to recipro eate in a position parallel to said form, a register plate and means for applying said plate against, for rocking and for shifting it relatively to said platen, respectively.

6. In a platen printing press in combination, a form, a platen adapted to reciprocate in a position parallel to said form, a register plate, a slotted guide connected with said plate and embracing part of said platen and armslinked to said platen and said plate, respectively, and adapted to simultaneously raise and rock said plate, as said platen recedes from said term 7. In a platen printing press in combination, a form, a platen adapted to reciprocate in a position parallel to said form, a register plate, a slotted guide connected with said plate and embracing part of said platen and arms linked to said platen and said plate, respectively, and adapted to adapted all simultaneously raise androck said plate, said platen recedes from said form and to carry it in front of and in a parallel to said platen, before applied against said tor-m.

8.111 a platen printing press in com-- bination, a form in substantially vertical. position, a platen adapted to reciprocate relatively to said form, a register plate, means for applying said plate ayainst and for rocking it relatively to said ilaten, respectively, an ink roller carriage adapted to rock in front of said form and a roclr lever connected with and adapted to rock said carriage, said lever being tulcrumed in such wise as to move beyond its dead centre position when said carriage "caches its highest position.

9.111 a platen printing press in combination, a form in substantially vertical position, a platen adapted to reciprocate relatively to said form, a register plate, means for applying said plate against and for rocking it relatively to said platen, ivspectively, an in]; roller carriage adapted to rock in front of said form, and a roclr lever connected with and adapted to rock said carriage, said lever being lulcrumed in n) such wise as to move beyond its dead er position when said carriage reaches 1. highest position and a rod connected with said lever and said plat respectively.

10. in a platen prr g press in com bination, a form, in substantially vertical position, a platen adapted to reciprocate relatively to said form, a register plate, means for applying said plate and for rocking it relatively to said platen, respe tively, an inlr roller carriage adapted to rock in front of said form, and a rock it er connected with and adapted to rocl: fiarriage, said lever being tnlcruzned in such wise as to move beyond its dead centre position when said carriage reaches its highest position, a rod connected with said lever and said platen, respectively, a curved extension at one end o'l said rod, a cam lace and means for carrying said cam face in contact with said extension.

11. In a platen printing press in combination, a form in substantially vertical position, a platen adapted to reciprocate relatively to said form, a register plate, means for applying said plate against and for rocking it relatively to said platen, respectively, an ink roller carriage adapted to rock in front of said form, and a rock lever connected with and adapted to roclr said carriage, said lever being fulcrumed in such wise as to move beyond its dead centre position when said carriage reaches its highest position, a rod connected with said lever and said platen, respectively, a curved extension at one end of said rod, a cam face and a self locking toggle lever said cam face in contact with 12. in a platen printing press in combinaion, a. term, a platen adapted to reciprocate r ilatively to said form, a register plate,

mean; for applying said plate against and for rocking it relatively to said platen, re-

ively, an ink roller carriage, a pair of int rollers supported by said carriage, treads disposed at different levels on either sid of said form and means for causing one of said rollers to travel downwards on one pair of treads and upwards on the other.

13. In a platen printing ress in combination, a form, a platen adapted to reciprocate relatively to said form, a register plate, means for applying said plate against and for rocking it relatively to said platen, respectively, an ink roller carriage, a pair of ink rollers supported by said carriage, treads disposed at different levels on either side of said form, a spring actuated roller on either side of one of said rollers and an inclined face at the lower ends of the higher treads.

l l. In a platen printing press in combination, a platen, a pneumatic teed nozzle, rock levers carrying said nozzle and adapted to be rocked by said platen, a register plate, a spring-actuated rcglet adapted to act as a gripper connected with said plate and a pawl connected with said nozzle and adapted to change the operative position of said reglet.

15. In a platen printing press in combination, a platen, a pneumatic feed nozzle, rock levers carrying said nozzle and adapted to be rocked by said platen, a register plate, a spring actuated reglet adapted to act as a gripper connected with said plate and a stationary pawl and spring adapted to turn said reglet so as to release a sheet.

16. In a platen printing press in combination, a platen, a pneumatic teed nozzle, rock levers carrying said nozzle and adapted to be rocked by said platen, a register plate, a spring actuated reglet adapted to act as a gripper connected with said plate, means for roclring said register plate and means adapted to be actuated by said rocking means for carrying said reglet into a position at right angles to said plate.

1?. In a platen printing press in combination, a platen, a pneumatic teed nozzle, rock levers carrying said nozzle and adapted to be rocked by said platen, a re ister plate, a sprin actuated reglet adapted to act as agripper connected with said plate and pins on said reglet serving to discharge a sheet.

18. In a platen printing press in combina tion, a platen, a pneumatic feed nozzle, rock levers carrying said nozzle and adapted to be rocked by said platen, a register plate, a spring-actuated reglet adapted to act as a gripper connected with said plate, a shaft on said plate, grippers on said shaft and connected with said platen for lifting said shaft elf said plate, when said register plate being lifted off sald platen. in testimony whereof I affix my signature in presence of two witnesses.

ALFRED SGHLESINGER.

Witnesses OSKAR FRJXGE, M. Senor.

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