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US428668A - deeeiey - Google Patents

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US428668A
US428668A US428668DA US428668A US 428668 A US428668 A US 428668A US 428668D A US428668D A US 428668DA US 428668 A US428668 A US 428668A
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sheet
cylinder
machine
bed
grippers
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F3/00Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
    • B41F3/18Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed of special construction or for particular purposes
    • B41F3/20Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed of special construction or for particular purposes with fixed type-beds and travelling impression cylinders

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  • Figure 1 represents a longitndinal vertical section of the machine embodying my invention
  • Fig. 2 a cletail vertical sectional view illustrating the mechanism for moving and stopping the impression-cylinclers
  • Fig 2% a detail view of the cam f'
  • Fig. 3 a plan of the machine, partly in section
  • Fig. 4 a longitudinal Vertical section of the machine with the parts so adjusted as to change it into a stopcylincler single machine
  • Figs. 5 to 9, inclusive show some modified forms of a press embodying my invention.
  • the becl O Above the becl O are two impression-cylinclers D ancl E, held against vertical movement, ancl the circumference of which is equal to the length of the travel of the bed O.
  • the oylinder D works when the becl moves from right to left. It makes a complete revolution and then stops, it and cylinder E being reducecl in diameter at the proper point, as shown, and having their gear m utilated in the ordinary way.
  • the cylincler E works when the bed moves from left to right, likewise making a complete revolution and then stopping. When the cylincler E is turning, the grippers with which it is provided take hold.
  • the grippers which held the sheet to the cylincler D now open in their turn, While those on the cylinder E close and again take hold of the sheet.
  • the cylinder E again beginning to turn, carries the sheet with it and impresses it upon the form placed on the second half of the bed.
  • the grippers open by virtue of cam I' when they pass the roller G, ancl the sheet is removed by tapes to the receiving-boarcl H, While the grippers pass ou to take a new sheet, as before.
  • cam .1 is introduced in connection with the cylinder D similar to the cam J'.
  • This cam .P closes the grippers of the cylinder D to cause them to take hold of the white sheet as they pass the feed-heard F and opens them at the roller G after the cylinder 1) in its revolution has printed the sheet on one side.
  • the sheets thns printed by means of the cylinderD are removed by tapes to the receiving-board IF.
  • a special eature of the improved machine is the combination of two cylinders like these in single stop-eylinder maehincs, the onc of which stops when the other begins to move, and the stop ocenrring so that the grippers which conduct the sheet are at the time of the stop on the line of the centers of the two cylinders.
  • the gripper movemcnts will be best understood by reference to Sheet 2. They are eft'ectcd by fixed cams and movable gripper-ams. The fixcd eams cause the grippers to take hold of the sheet anl to deliver it after the impression. The movable cams open and close the respective grippers, so as to cause the Sheet to be transferred from. the one eylinder to the other. Take, in the first place, the case of a sheet which has to be printed on both sidcs without the intervention of a set-Oil' shcet.
  • This cylinder begins to move, and draws the printed sheet, and with it the overlying set-off sheet, which thus becomes interposed between the already-printed side and the cylinder E, after which the grippers open at the roller G, and the sheets are delivered in the manner already explained.
  • the cams I' 1 are removed and a fiXed cam J is fitted for the cylinder D like the cam J' for. the cylinder E.
  • each cylinder takes its sheet at the feed-board and does not release it when the cylinder stops.
  • the cylinder again begins to move, prints its sheet on the one side, and-delivers it at the roller G or G
  • the inking apparatus em ployed is composed of rollers, which are all of equal diameters,so that n practice any of the rollers can be employed one for another.
  • the vibrator Supplies the ink to an iron cylinder, which is in contact with both the Vibrator v and the distributer.
  • the cylinder is rotated by the rubbing contact of the rollers, and is mounted on a fixed shaft cut with a screw having two crossed threads, which causes the cylinder to receive a to-andfr0 movement, so that the ink is distrmped both on the Vibrator and the distributer independently of the action of the distributer on the cylinder which is in contact with the inkers.
  • the inking apparatus is carried in a frame forming a sort of small inking-machin e, which can be slid into place on the frame of the printing-machine. This will allow of its being moved out, if required, in order to facilitate corrections in the forms placed in the machine.
  • FIG. 1 The drawings represent a machine with flat ink-distribution; but it is evident that cylindrical ink-distribution can equally be adapted thereto.
  • a point-rod A s added to the machine and is actuated by a lever 13 fiXed on the shaft, which when the machine is used as a perfecting-machine serves for raising the lower part of the feed-board, so that the layer-on may adjust the sheet to the feed-stops.
  • machines constructed according to this' invention should in principle have the circumference of the cylinders equal to the travel of the bed in one o direction and that the speed is the more limited as the cylinder is larger.
  • the stopping of the cylinder becomes more diicult in proportion to the increase n its diameter, While the bed, being driven directly by a crankmovement, caneasilybear an increased speed.
  • the large size of the cylinder causes a difficulty in the movement of the stop-levei'. difficulty, I considerably reduce the diameter of the cylinder by the following arrangements, (see Figs.
  • the cylinder need not have a circumferential travel exactly equal to the bed carrying the forms, as in the part where the contact eXists between' them for printing the sheet. I therefore place on the bed first a rack R, having a part 7 gearing with a sector t on the cylinder in the part corresponding to the quarter-turn necessary to bring the head of the sheet in contact with the bed and in the part corresponding to the duration of this contact for theimpression' of the largest sheet for which the machine is made.
  • the rest of the circumference is occupied by a sector. t', of larger radius, gearing with the part r' of the rack R, placed on the same side of the bed underneath. The result is that in' this part of the inovement the cylinder travels more slowly.
  • Figs. 7, 8, and 9 represent a modified form of the arrangements involving my invention wherein the production of the machine is increased by utilizing each of the cylinders for printing two forms on the obverse and reverse sides of the sheet, the sheet being cut in two In order to overcome this,
  • the bed has at eaeh side a rack R, consisting of the two parts o and r', gearing with two sectors t and t' on eaeh eylinder, but placed in the order whiehis the reverse of the preeeding arrangement.
  • the bed has a travel longer than the eirenmterenee of the eylinders and runs quicker than the eylinder turns in the part of the eylinder not allotted to printing.
  • This printing part is equal to nearly three-fourths of the eireumferenee of the eylinder. This part corresponds to the total development of the two forms plaeed on the bed.
  • the first eylinder has printed this sheet corresponding to the two fOl'lllS, it comes to its stop on the line of the centers of the two eylinders.
  • the second eylinder takes this sheet and turns slowly until the sheet comes in contact with the bed, after which the eylnder turns at the same speed as the bed and prints in its turn upon the two forms, the second form eoming upon the first that was previously printed.
  • This sheet is after-Ward delivered to the receiving-board, as has been hereinbefore explained, by the Opening of the grippers in front of the roller G.
  • These sheets are afterward cut in two, which donbles the number of eopies. This arrangement necessitates a given size of sheet, and the two ends of the forms should come at eaeh end of the travel of the bed at an equal distanee from the line of the centers of the two eylinders.
  • the same machine ean be employed for any sizes of sheet smaller than the given size 'for whieh the machine is made by employing in this case single sheets eorresponding to one of the forms, the rednetion of the size being made at the space whieh separates the two forms and the cylinders being provided with blanket only in the part of their eireumference corresponding with the form to be printed.
  • ⁇ Vhen eaeh of the eylindcrs prints on the two forms, I place at eaeh end of the bed a small fiat inking-table, reeeiving ink on the passage under the inking-rollers of the eylindrical inking arrangement and transferring it to two inking-rollers placed between the two eylinders and serving to ink the end of the forms whieh in turn are not entirely inked by the eyli ndrieal inking arrangemen t.
  • ⁇ Vhen a set-off sheet is necessary, this sheet is ted at the feed-board F, as has been already explained, and is drawn forward, as hereinbefore desoribed.
  • the printed sheet and the set-off sheet arrive at the same time at the exit-roller G, and at this moment the first is sueked from below by a tube M and the seeond from above by a tube N, these tubes being connected with an air-pump worked by the machine.
  • the reeeiving device makes only a short movement and brings the set-off sheet to an inclined board of less length than the sheet whieh is thrown onto the board and hangs over it.
  • the eombination of two impression-eylinders, eaeh of whieh is adapted to stop in its turn, and provided with grippers so placed thereon as to be in the line of the eenters of the two eylinders at the time of the stop, and means, substantially as described, for Opening the grippers of the one eylinder and elosing those of the other synehronously, substantially as deseribed.
  • the combination of two impression-eylinders, eaeh of whieh is adapted to stop n its tu rn, and eaeh provided with grippers so placed thereon as to be in the line of the eenters of the eylinders at, the time of the stop, in combination with vibrating gripper-eams, onefor eaeh cylinder, substantially as deseribed.
  • a eylinder print-iig-machine the eombination of two eylinders, eaeh provided with a toothed wheel at one end, the two toothed wheels being at opposite sides of the machine, in combination with a reeiproeating rod provided with two raeks at opposite sides, one for eaeh toothed wheel, and means, substantially as deseribed, for stopping one of the cylinders at the forward motion and the other at the return motion of the bed, ⁇ vhereby the neeessity of elevating the eylinders is obviated, all snbstantially as deseribed.
  • the eombination ot' two eylinders, held against movement in a vertical direction, and means, substantially as deseribed, for aetuating the cylinders by the forward and baekward movement of the bed, and stopping, devices, one for eaeh eylinder, and adapted to alternate] y engage with the eylinders, all substantially as deseribed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

(No Model.) 6 Sheets-Sheet 1.
J. DERRIEY.
PRINTING MAGHINE. v
No. 428,668. Patented May 27, 1890.'
(No Model.) 6 Sheets--Sheet 2.
J. DERRIEY. PRINTING MACHINE.
No. 428, 8. Patented May 27, 1890.
mnesses nvemor do/ n,
(No Model.) 6 Sheets-Sheet 3. J. DERRIEY. PRINTING MACHINE.
No. 428,668. Patented May 27, 1890.
3565 1711572301 N 70725- 622?? ay (No Model.) 6 Sheets-'Sheet 4.
J. DERRIEY.
PRINTING MAGHINE.
No. 428,668. P atented May 27., 1890.
In venan 'ms Humans varias co., Wno-uma., 'mm-matam o c.
(No Model.) 6 Sheets-Sheet 5. A JJ DERRIEY. PRINTING MACHINE.
No. 428,668. Patented May 27, 1890.
6 Sheets-Sheet 6.
(No Model.)
J. DERRIEY. PRINTING MACHINE. No. 428,668. A z Patented May 27, 1890.
Mi'nesses J A W Jwveynqr M43 3 www ,By his aorzy W 'ma uuums FETERS co., mam-mun., wAsmncrcH. D. c.
UNITED STATES PATENT OFFICE.
I JULES DERRIEY, OF PARIS, FRANCE.
PRINT|NG -MACH|NE.
SFECFICATION forming part of Letters Patent No. 428,668, dated. May 27, 1890.
Application filed July 9, 1888. Serial No. 279,478. (No model.) Patented in France April 24, 1886,N0.175,735; in England July 5, 1887, No. 9,525, and June 5, 1888, No. 8,213, and in Germany July 16, 1887, No. 43,871.
To all whom, it may concern:
Be it known that I, JULES DERRIEY, of Paris, France,have inventecl certain new and useful Improvernents in Printing-Machines, (and which has been patented in France April 24, 1886, No. 175,735; in Germany July 16, 1887, No. 43,871; in Great Britain July 5, 1887, No. 9,525, and June 5, 1888, No. 8,2l3,) of which the following is a speciication.
This invention has reference to printingmachines of the kind generally called perfecting-machines, and more particularly to those known as Anglo-French perfecting-machines and its object is to overcome the objections inherent in these Anglo-French machines, while retaining and increasing the aclvantages obtainecl by the use of such machines. The increase of advantages is attained by constructing the machines so that they can be employed as clesired either as perfecting-machines or as double single cylinder machines, or as stop cylinder single machines, by reducin g the space occupied by the machines and by providing a better arrangement for inking the forrns. The lifting movements which have always existed in this class of machine for raising the impression-cylinders are dispensecl with and so is the'usual rack-movement, and the speecl of the machine can thus be increased.
The accompanying clrawings illustrate the' inven tion.
Figure 1 represents a longitndinal vertical section of the machine embodying my invention; Fig. 2, a cletail vertical sectional view illustrating the mechanism for moving and stopping the impression-cylinclers; Fig 2% a detail view of the cam f'; Fig. 3, a plan of the machine, partly in section; Fig. 4, a longitudinal Vertical section of the machine with the parts so adjusted as to change it into a stopcylincler single machine; and Figs. 5 to 9, inclusive, show some modified forms of a press embodying my invention.
Referring first to Sheets 1,*2, and 3, the machine is actuated by two large wheels A, connccted together by a crank-pin A". The niotion of this crank-pin is transmitted by a connecting-rocl to the Wheels B, which actuate the bed O of the machine, giving it a longitudinal travel double that of the wheels B.
Above the becl O are two impression-cylinclers D ancl E, held against vertical movement, ancl the circumference of which is equal to the length of the travel of the bed O. The oylinder D works when the becl moves from right to left. It makes a complete revolution and then stops, it and cylinder E being reducecl in diameter at the proper point, as shown, and having their gear m utilated in the ordinary way. The cylincler E works when the bed moves from left to right, likewise making a complete revolution and then stopping. When the cylincler E is turning, the grippers with which it is provided take hold. of the white sheet, which has been laid on the feedboard F, when they pass the end of this board and cai-ry the sheet to the line of the centers of the two cylinders. At this point the cylinder E stops, its grippers open by virtue of the vibrating cam I', which is oaused to rise at this point and release the sheet, and the grippers of the cylinder D at the same time close upon it by reason of the vibrating cam I. As soon as cylinderD begins to move, itcar ries the sheet with it and ilnpresses it upon the form placed on the first half of the bed O. The cylinder D making its complete revolution, again brings the sheet to the line of the centers of the two cylinclers. The grippers which held the sheet to the cylincler D now open in their turn, While those on the cylinder E close and again take hold of the sheet. The cylinder E, again beginning to turn, carries the sheet with it and impresses it upon the form placed on the second half of the bed. The grippers open by virtue of cam I' when they pass the roller G, ancl the sheet is removed by tapes to the receiving-boarcl H, While the grippers pass ou to take a new sheet, as before.
The foregoing is the action of the machine when it is employecl as a perfecting machine-that is to say, forprinting a sheet on its two sicles snccessively. When, on the other hand, it is desirecl to employ the machine 'as a single-cylinder machine, it is necessary to remove the vibrating cams I' ancl 1 which cause the grippers to open or close on the line of the centers of the two cylinclers. The result is that the grippers which have taken hold of the sheet at the end of the feed-board F retain the sheet when the cylinder stops, and When the cylinder again begins to move it carries the Sheet with it, so as to print it on one side only, after which it delivers it from the machine at the roller G, as bcfore.
In addition to removing the vibrating eams I' and 1 a cam .1 is introduced in connection with the cylinder D similar to the cam J'. This cam .P closes the grippers of the cylinder D to cause them to take hold of the white sheet as they pass the feed-heard F and opens them at the roller G after the cylinder 1) in its revolution has printed the sheet on one side. The sheets thns printed by means of the cylinderD are removed by tapes to the receiving-board IF.
\Vhen set-off shcets are employed in ordinary machines, thcy are inserted by means of a Special feed-heard which eneumbers the npper part of the machine; but in my improved maehines when it is required to use set-off sheets, they are fed by means ol' the feettboartl so that much more of the npper part of the machine remains uncovered than in the ordinary machincs which have aspecial feed-heard for the set-off sheets.
I will now proceed to describe the mochanism whereby the impression-eylinders are put into motion and stopped. In the so-ealled Anglo-French maehines the eylinders re Volve eontinnonsly. The cylinder which has to print the sheet on the first side is lowered upon the bed of the machineby means of Special eeeentries, while the other eylinderis lifted so as not to toneh the bed. Then when the bed travels in the reverso direction the first cylinder is lifled in its turn, while the second is lowcred. It will be readily understood that as soon as the parts which el'fect these lifting movements begin to wear there ceases to be any acenracy in the impression. In the improved machine each of the cylin (leis is aetuated directly by the bed C by means of a raek R, placcd at the right of the bed for one of theeyli11lers,and gearing with a toothcd wheel or pinion T on the one cylinder and by means of a raek R', plaeed at the let't of the bed and similarly acting upon a toothetl wheel or pinion T' on the other cylimler. These raeks and pinions may be either in the forms shown in Figs l and 3 or these shown in Figs. 5 to where the racks R and R' are each composed of two parts *r and 7", and the pinions T and T' are each eomposed of the two parts and t' of (liflferent radii, as and for the pnrpose to be deseribed farther on. The starting of the respective eylinders is etected by means 01:' cams which aet upon levers K (Sheets 2 and 3) through the intermediation ot' eonneeting-rods. The lCVGl'S K have eaeh a Forked or toothed end which stops the corresponding cylinder when it has completed its revolution, and holds it fixed nntil it has again to be put into motion. These starting and stoppingactions are similar to those in what are known as stop-cylinder single machinesj and more partienlarly in these of French and German Construction. The retention of the stop is assured by brakes L L, acting on pulleys L', and actuated by cams on the longitndinal shaft M.
A special eature of the improved machine is the combination of two cylinders like these in single stop-eylinder maehincs, the onc of which stops when the other begins to move, and the stop ocenrring so that the grippers which conduct the sheet are at the time of the stop on the line of the centers of the two cylinders.
I will now explain the gripper movemcnts and the travel of the papel'. The gripper movemcnts will be best understood by reference to Sheet 2. They are eft'ectcd by fixed cams and movable gripper-ams. The fixcd eams cause the grippers to take hold of the sheet anl to deliver it after the impression. The movable cams open and close the respective grippers, so as to cause the Sheet to be transferred from. the one eylinder to the other. Take, in the first place, the case of a sheet which has to be printed on both sidcs without the intervention of a set-Oil' shcet. The white sheet is laid on the fGOtLbOtl'd F against the feed-stops (L. The grippenlever b in revolving with the cylinder E rnns over the iixed cam J', and the ineline of this cam lowers the leyer, which, by means of atoothed sector gearing with a pinion on the gripperred (7, eauses this red to turn, together with the grippers, so that they close, take hold oi' the sheet, and carryit off. The grippcrsbring the sheet np to the line of the centers of the two eylinders and the eylinder stops. At this moment the lever l) meets the movable grippercam I', which is liftcd by the action of the camfand cansos the grippers to open. At the same time the movable gripper-cam I is acted upon by means of the ecccntricf',which is on the same shal't as the camsf. (The cam f' is shown detaehed in Fig. 2, so as not to confuso the drawings.) given to the cam P cansos the grippcrs of the eylinder D to close, and this cylinder begins to move immediately. These grippcrs draw the sheet with them and make a com pletc turn, with the cylinder. 'J'heythereforc return to the startingpoint and the cylindcr stops. At this moment the movable cam 1 is lifted by the cam f', so that the grippers are opened, and simultaneonsly the movable cam 1', under the action of the cam f, closes the grippers of the cylinder E. This eylinder immetliately begins to move and the sheet s carried on for the second imprcssion. \Vhen these grippers come to the roller G, the lever which acts upon them riscs over the fixed cam J', which canses them to open and to release the shect, which is then carried to the receiving-board II by tapes which pass round the rollcr G and a rod g. \Vhen it is required to 'inserta set off sheet, the action of the grip1'ers ispreeiselythesameg butasecondlayenon lays the set-off sheet on the feed-board W up to the :feed-stops u and as soon as the grippers of the The movement thus.
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cylinderD have passed the -upper part of the cylinder the rollers h are lowered on the cylinder and draw thesecond sheet, which is accom panied by tapes, up to the rod Z. When it reaches this point, the set-off sheet is abandoned by the tapes and the rod Z is lifted by an eccentric placed on the brake-pulley of the cylinder D. At this moment the cylinder D stops. Its grippers are opened and release the sheet which they carried and on which the set-off sheet now lies. The grippers of cylinder E close. This cylinder begins to move, and draws the printed sheet, and with it the overlying set-off sheet, which thus becomes interposed between the already-printed side and the cylinder E, after which the grippers open at the roller G, and the sheets are delivered in the manner already explained.
When it is required to employthe machine as a double stop-cylinder single machine, the cams I' 1 are removed and a fiXed cam J is fitted for the cylinder D like the cam J' for. the cylinder E. In this case each cylinder takes its sheet at the feed-board and does not release it when the cylinder stops. After the stop the cylinder again begins to move, prints its sheet on the one side, and-delivers it at the roller G or G For inking the forms the inking apparatus em ployed is composed of rollers, which are all of equal diameters,so that n practice any of the rollers can be employed one for another. The vibrator Supplies the ink to an iron cylinder, which is in contact with both the Vibrator v and the distributer. The cylinder is rotated by the rubbing contact of the rollers, and is mounted on a fixed shaft cut with a screw having two crossed threads, which causes the cylinder to receive a to-andfr0 movement, so that the ink is distrbuted both on the Vibrator and the distributer independently of the action of the distributer on the cylinder which is in contact with the inkers. The inking apparatus is carried in a frame forming a sort of small inking-machin e, which can be slid into place on the frame of the printing-machine. This will allow of its being moved out, if required, in order to facilitate corrections in the forms placed in the machine.
In order to employ the machine as a single stop-cylinder machine, (see Sheet 4,) it is sufficient to disconnect the toothed wheel T, which is adj ustably fixed on one cylinder and gears with the rack R on the machine-bed, but leaving the wheel below the stop-lever of the cylinder, then to turn the cylinder so as to bring the grippers to the top of the cylinder at the time of the stop, instead of leav ing them placed on the line ofthe centers of the two cylinders, and to fix the wheel to the cylinder in this new position by means of bolts connecting the wheel with the cylinder, it and the toothed wheel being provided with four perforatons, each as shown at P, Fig. 4:
In order to -insure perfect inking of all the form, I arrange two inking-rollers between the 'two impression-cylinders. These two rollers, which run over the whole form, produce uniformity between the parts which receive more and those which receive less ink from the other rollers.
The drawings represent a machine with flat ink-distribution; but it is evident that cylindrical ink-distribution can equally be adapted thereto. Further, a point-rod A s added to the machine and is actuated by a lever 13 fiXed on the shaft, which when the machine is used as a perfecting-machine serves for raising the lower part of the feed-board, so that the layer-on may adjust the sheet to the feed-stops. This very simple transformation allows of the machine being used as either a perfecting-machine, with or Without a set-off sheet, as a double single-cylinder machine, or as a stop-cylinder single machine, thus making it, so to speak, a universal machine, fulfilling all the requirements of a printing-office and rendering it particularly adapted for small establishments.
It will be understood that machines constructed according to this' invention should in principle have the circumference of the cylinders equal to the travel of the bed in one o direction and that the speed is the more limited as the cylinder is larger. The stopping of the cylinder becomes more diicult in proportion to the increase n its diameter, While the bed, being driven directly by a crankmovement, caneasilybear an increased speed. The large size of the cylinder, on the contrary, causes a difficulty in the movement of the stop-levei'. difficulty, I considerably reduce the diameter of the cylinder by the following arrangements, (see Figs. 5 and 6:) The cylinder need not have a circumferential travel exactly equal to the bed carrying the forms, as in the part where the contact eXists between' them for printing the sheet. I therefore place on the bed first a rack R, having a part 7 gearing with a sector t on the cylinder in the part corresponding to the quarter-turn necessary to bring the head of the sheet in contact with the bed and in the part corresponding to the duration of this contact for theimpression' of the largest sheet for which the machine is made. The rest of the circumference is occupied by a sector. t', of larger radius, gearing with the part r' of the rack R, placed on the same side of the bed underneath. The result is that in' this part of the inovement the cylinder travels more slowly. These two arrangements allow of reducing the Size of the cylin der and facilitate the action of the stop-levei'. The arrangement of the two racks and two sectors is repeated at each side of the bed and on each cylinder.
Figs. 7, 8, and 9 represent a modified form of the arrangements involving my invention wherein the production of the machine is increased by utilizing each of the cylinders for printing two forms on the obverse and reverse sides of the sheet, the sheet being cut in two In order to overcome this,
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after the printing. The bed has at eaeh side a rack R, consisting of the two parts o and r', gearing with two sectors t and t' on eaeh eylinder, but placed in the order whiehis the reverse of the preeeding arrangement. The bed has a travel longer than the eirenmterenee of the eylinders and runs quicker than the eylinder turns in the part of the eylinder not allotted to printing. This printing part is equal to nearly three-fourths of the eireumferenee of the eylinder. This part corresponds to the total development of the two forms plaeed on the bed. \Vhen the first eylinder has printed this sheet corresponding to the two fOl'lllS, it comes to its stop on the line of the centers of the two eylinders. The second eylinder takes this sheet and turns slowly until the sheet comes in contact with the bed, after which the eylnder turns at the same speed as the bed and prints in its turn upon the two forms, the second form eoming upon the first that was previously printed. This sheet is after-Ward delivered to the receiving-board, as has been hereinbefore explained, by the Opening of the grippers in front of the roller G. These sheets are afterward cut in two, which donbles the number of eopies. This arrangement necessitates a given size of sheet, and the two ends of the forms should come at eaeh end of the travel of the bed at an equal distanee from the line of the centers of the two eylinders.
The same machine ean be employed for any sizes of sheet smaller than the given size 'for whieh the machine is made by employing in this case single sheets eorresponding to one of the forms, the rednetion of the size being made at the space whieh separates the two forms and the cylinders being provided with blanket only in the part of their eireumference corresponding with the form to be printed. \Vhen eaeh of the eylindcrs prints on the two forms, I place at eaeh end of the bed a small fiat inking-table, reeeiving ink on the passage under the inking-rollers of the eylindrical inking arrangement and transferring it to two inking-rollers placed between the two eylinders and serving to ink the end of the forms whieh in turn are not entirely inked by the eyli ndrieal inking arrangemen t. \Vhen a set-off sheet is necessary, this sheet is ted at the feed-board F, as has been already explained, and is drawn forward, as hereinbefore desoribed. The printed sheet and the set-off sheet arrive at the same time at the exit-roller G, and at this moment the first is sueked from below by a tube M and the seeond from above by a tube N, these tubes being connected with an air-pump worked by the machine. This double suction separatcs the two sheets, eonipelling the set-off sheet to be taken hold of by tapes from the rollers m n o, which eonduct it toa reeeiving device or ilier, While the printed sheet falls on the reeeiving-board, where it is arranged by hand. The reeeiving device makes only a short movement and brings the set-off sheet to an inclined board of less length than the sheet whieh is thrown onto the board and hangs over it.
What I elaim, and desire to seeure by Letters Patent, is-
1. In a eylinder printing-machine, the eombination of two impression-eylinders, eaeh of whieh is adapted to stop in its turn, and provided with grippers so placed thereon as to be in the line of the eenters of the two eylinders at the time of the stop, and means, substantially as described, for Opening the grippers of the one eylinder and elosing those of the other synehronously, substantially as deseribed.
2. In a cylinder printing-maehine, the combination of two impression-eylinders, eaeh of whieh is adapted to stop n its tu rn, and eaeh provided with grippers so placed thereon as to be in the line of the eenters of the eylinders at, the time of the stop, in combination with vibrating gripper-eams, onefor eaeh cylinder, substantially as deseribed.
3. In a eylinder printing-maehine, the eombination of two eylinders, eaeh of which is adapted to stop in its turn, and eaeh provided with grippers, with a fixed and a vibrating cam for eaeh cylinder, the fixed cam for one of the eylinders and both vibrating eams being removable, all snbstantially as described.
4. In a eylinder print-iig-machine, the eombination of two eylinders, eaeh provided with a toothed wheel at one end, the two toothed wheels being at opposite sides of the machine, in combination with a reeiproeating rod provided with two raeks at opposite sides, one for eaeh toothed wheel, and means, substantially as deseribed, for stopping one of the cylinders at the forward motion and the other at the return motion of the bed, \vhereby the neeessity of elevating the eylinders is obviated, all snbstantially as deseribed.
5. In a eylinder printing-machine, the eombination ot' two eylinders, held against movement in a vertical direction, and means, substantially as deseribed, for aetuating the cylinders by the forward and baekward movement of the bed, and stopping, devices, one for eaeh eylinder, and adapted to alternate] y engage with the eylinders, all substantially as deseribed.
U. In a eylinder printing-press, the combination of two eylinders, eaeh provided with a pinion, one of which pinions is adjustably attaehed with a reciprooating bed provided with raeks on opposite sides of the bed, one for eaeh pinion, all substantially as described.
7. In a eylinder printing-press,t\vo impression-eylinders, eaeh provided with two toothed seetors of different radii, the sectors being at opposite ends of the eylinders, in combination with a reeiproeating bed provided with raeks at opposite sides, eaeh raek being composed of two parts corresponding to the two seetors on the printing-eylinders, all substantially as deseribed. v
S. In a eylinder printing-press, two impres- IOO sion-cylinders who'se cireumfei ence is smaller than the travel of the reciprocating bed, and which are provided at opposite ends toeach other With two toothed sectors of different 1'ac1ii,in combination With a reciprocating bed having two racks, one on each side, which l acks are eaeh eomposed of two parts corresponding to the toothed seetors, all substantially as described.
In testimony whereof I have Signed my IO name to this specifieation in the presence of two subscribing Witnesses.
JULES DERRIEY; Vtnesses:
ROBT. M. HOOPER, ALBERT COHEN.
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