US528830A

US528830A - Machine

Info

Publication number: US528830A
Authority: US
Publication date: 1894-11-06
Anticipated expiration: 1911-11-06

Description

(No Model.) 7 1'1 Sheets-Sheet 1.

M. VIERENGEL. 1

PRINTING MACHINE.

. Patented Nov 6,, 1894.

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(N9 Model.) 11 sheeas s eet 2.

' M. VIERENGEL. PRINTING MACHINE.

. Patented Nov. 6, 1894.

(No Model.) I

11 sheet -sheet 3. M. VIERENGEL.

PRINTING MACHINE.

Patented Nov. 6,1894.

11 Sheets-Sheet 4.

(No Model.)

M. VIERENGEL.

' PRINTING MACHINE.

No. 528,830. Patented Nov 6, 1894.

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' ITHTH (No Model.)

11 Sheets-Sheet 5.

- M. V IERENGE L.

PRINTING. MACHINE.

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(No Model.) 11 Sheets -She et 6. M. VIERENGEL.

PRINTING MACHINE.

No. 528,830. Patented Nov. 6, 1894.

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(No Model.) 11 SheetsSheet-7.

M. VIERENGEL.

PRINTING MACHINE. I

No. 528,830. Patented Nov. 6, 1894.

WITNESSES ATTORNEY.

(No Model.) 11 Sheets-Sheet 8. M. VIERENGEL. PRINTING MACHINE.

No. 528,830. Patented Nov. 6, 1894 WITNESSES ATTORNEY.

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M. VIERENGEL.

PRINTING MAGHINE- No. 528,830. Patexited Nov. 6,1894.

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IHIIIIIIIHII II W/ TNE SSE 8 (No Model.) 11 Sheets-Sheet 1o.

' VIERENGEL. ERINTING MACHINE.

No.'. 528,'830. Patented Nov. 6, 1894.

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(No Model.) '11 Sheets-Sheet 11.

' M. VIERENGEL,

I PRINTING MAGHINE. No. 528,830. Patent-ed Nov. 6,1894.

WITNESKS:

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PATENT @Fnicn.

- MATTHEW VIERENGEL, on BRooKLYn Ew YORK.

PRINTING-MACHINE.

SPECIFICATION formin part of Letters Patent No. 528,830,"datedNovember 6, 1894.

Application filed February 9, 1392- serial No. 420,927. (No model.)

To all whom it may concern.-

Be it known that I, MATTHEW VIERENGEL, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Printing-Machines; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to cylinder printing machines, and particularly to the motions of the form beds; the impression construction and motions of impression cylinders, and the gripper operating mechanism for such cylinders, and finally to the construction of an organized printing machine capable of being used for a variety of purposes; for example for single printing at a much higher speed than is possible with any known form of cylinder printing machines, for color printing without multiplying the impression cylinders,

and perfecting, that is printing on both sides of the sheet for book and newspaper work,

850., also Without multiplying the impression cylinders.

The objects of my invention are, first, to produce a printing machine which shall be so organized that it can at will and by shifting or readjusting the devices which operate the grippers on the impression cylinder to take and release the sheet fed to the machine, be

converted into a machine for single printing,

or color printing or perfecting, as may be desired; second, to provide such an alterable printing machine with a form bed or beds which shall be adapted to travel in guide ways parallel to eachother, and in an orbital pathtravelin g in the upper guide ways when making an impression, and in the lower guide ways on the backward motion, and passing from one to the. other Without reversing the forms; third, to produce a cylinder printing machine in which a plurality of form beds shall be combined with an impression cylinder and the form beds shall be constructed and arranged to travel in orbital guide ways one after the other by a continuous regular motion and each in harmony with an impression surface on the cylinderthe beds being arranged to balance one another while passing machine;- Fig. 2, a longitudinal sectional elevation of the same; Fig. 2 detached enlarged views of a part of the perfecting mechanism.- Fig. 2 is a detached sectional view of one of the levers 20, that connect with the rock levers 22-the section being taken on .line k k of Fig. 2; Fig. 3, an elevationof the side of the machine opposite that shown in Fig. 1; Fig. 4, a longitudinal sectional elevation of the machine illustrating particularly the bed motionmechanism; Figs. 4 and 4 ,detached views of parts of the bed motion mechanism; Fig. 5, a frontelevation of the print ing machine; Fig. 6,a-vertical transverse section of the machine taken on linejj of Fig.

'1; Fig. 7, a plan of the machine with the cylinder and other parts above the beds removed; Fig. 8, a plan also but with the cylinder and other parts omitted in Fig. 7, in position; Figs. 9,10 and 11 views in different positions of the cam and accompanying mechanism of the delivery cylinder. Fig. 12 represents in side elevation the impression cylinder and auxiliary turning cylinder and accompanying mechanism as arranged for perfecting, and also parts of an automatic feeding attachment for printing machines. Fig. 13 represents in side elevation the impression cylinder, auxiliary cylinder and accompanying mechanism as arranged for color printing. Fig. 14 represents in side elevation the impression cylinder and delivery cylinder for single printing; Fig. 15, a detached edge view ofapart of the automatic feeding mechanism; Fig. 16, a plan of the automatic feeding mech anism; Fig. 17, a sectional top View of one end of the impression cylinder and the devices 'co-operating therewith to move the slide by which the delivery cylinder gripper cam (see Figs. 9, 10 and 11) is brought into action; Fig. 18, sectional end view and rear elevation of the switch mechanism for taking the sheet off the turning cylinder in perfecting; Fig. 19, a side elevation and Fig. 20 an end elevation of a modification of my invention having in View a three revolution move ment of the cylinder and also an improved support for the bed or beds when taking an impression. Fig. 21 represents on an enlarged scale a double inking apparatus applicable to printing machines-one part of the apparatus showing a three roller arrangement, and the othera four roller arrangement. Fig. 22, represents the roller operating mechanism for the same; Figs. 23 to 25, views in detail of the sidewise distributing mechanism, the. Fig. 26 represents a vertical cross-section of the impression cylinder and the automatic feeding mechanism; Fig. 27, an enlarged view in side elevation of the irregular gearing for varying the motion of the cylinder; Fig. 28, an edge elevation of the same; Fig. 29, an enlarged end view of the impression cylinder, and the sheet reversing cylinder-sl1owing also the switch mechanism for operating the grippers of the reversing cylinder, and the devices for giving motion to the tapes that assist in guiding the sheet to the grippers when the reversing cylinder is backing up. Fig. 30 is a rear elevation of the same. Fig. 31 is an enlargedinside view of the guide-ways for the beds, the switches in the said guide-ways and the mechanism for opening and closing the said switches; Fig. 32, a vertical cross-section of the same, taken on line .2 a. Fig. 33, is a plan of the inking stands (one stand being provided with three inking rollers, and the other with four) also showing the mechanism that gives motion to the various rollers. Fig. 34 represents a vertical crosssection of the inking stands the section being taken on line 10 w of Fig. 33. Fig. 35 represents an end elevation of the inking arrangement. Fig. 36 represents a side elevation of the form roller inking apparatus illustrating the gearing connecting the form rollers with the driving shaft of the inking apparatus; Fig. 37, an end view of the same. Fig. 38 represents a side elevation of the three roller apparatus illustrating the mode of connecting the same with the driving shaft, and Fig. 39 is an end view of the same.

Referring to the drawings the frame of the machine is constructed in the usual manner and power can be applied to the driving shaft S or to the bevel wheel shaft 7 by fitting the same with fast and loose pulleys.

The bed motion.-The upper side frames are provided in their inner sides with parallel

longitudinal guide ways

1, 1 one above the other which are connected at their ends by true

semi-circular guide ways

2, 2 and at equal distances from the ends by intermediate counter part guide-ways 3 3 It is preferred that the end guide-ways shall be made separate from the side frames of the machine by casting them on a plate 19 as shown in the sectional and side elevations of the machine, and also detached in Fig. 4, Thus made the connecting guide-way pieces are set in recesses r in the end plates or up rights of the side frames and secured by bolts and adjusting screws as shown. This is the preferred mode of making these parts on account of the facility with which the guide-ways can be turned and finished; but it is obvious that the entire guide-ways may be cast integral with the frame. The semicircular sides of the intermediate guideways 3 3 are also preferably cast on a separate plate 19 as shown, but they may also be cast with the frame. The driving shaft S passes through the side frames at the center of the curve of the rear intermediate guide way 3; and inside and close to the side frames on eitherside, toothed wheels t 4 are mounted on said shaft and revolve with it. At the center of the front intermediate guide way 3 is a shaft S which carries similar toothed wheels 4: t. The shaftS on its end opposite the timing pinion P outside of the frame carries a bevel wheel 5 which engages a beveled wheel 6 on a shaft 7, that also carries a beveled pinion 8 which gears into a bevel wheel 5 on the end of the shaft S that carries the toothed wheels 4. The rear Wheels 4 4t and front wheels 4 at are thus geared to the main driving shaft that also carries the timing pinion P, the function of which is to keep the main shaft, cylinder and beds in proper operative connection. A wheel on the end of shaft 7 serves both as abalance Wheel and as a hand wheel for operating the beds when the machine is at rest. The toothed wheels 4 4E and 4 4 drive the form beds and also transfer them from one guide way to the other as will be presently described.

The form beds B B are supported in the guide ways by friction rollers 9 9 placed on shafts 1O 1O projecting laterally from the sides of the bed at the two ends thereof. The friction rollers run in the guide ways and between them and the sides of the bed the space is sufficient for the toothed wheels to engage the shafts on which the rollers are mounted. Between the end shafts 10 10 are laterally projecting pins 11. The intervals between all the pins and the end shafts correspond to the pitch of the toothed wheels which engage the said pins and shafts and thus give motion to the beds. The wheels t at have two spaces 15 t on diametrically opposite sides larger than the other spaces between the teeth of the wheel. 15 t engage the end shafts l0 and the middle pins of the bed-they being made larger than the others in order to properly engage the end shafts 10 which arelarger than the pins because they have to support the entire weight of the ends of the beds.

These spaces IIO Two form beds B -B are used in this masheet and the other the form for printing the opposite side. The beds have a continuous motion ontheir rollers in the guide ways traveling in the upper guide ways from the rear to the front of the machine when making an impression, and when at the end of the forward motion descending without reversing (the ends traveling together through the front curved end and intermediate guide ways 2 3 to the lower guide ways and without interruption traveling back to the rear of the machine and ascending also without reversing by the rear end and intermediate guide ways 2 3 to the upper guide ways to make another impression.

There is no interruption of the movement of the form beds at any time while the press is in motion, and the two form beds are always at exactly opposite points at every moment while running. Thus when bed B is passing under the impression cylinder, bed B is traveling back to the rear of the machine by the lower guide-ways, and when one bed is descending from the upper to the lower guide ways at the front end of the machine, the other at the same time is ascending from the lower to the upper at the rear end of the machine. The purpose of this mode ofoperation is to obtain a balance between the two form beds so that the motion of one-will counterbalance the other, and thereby when one bed is descending from the upper guide ,way to the lower, its weight aids in lifting the other bed from the lower guide ways to the upper.

The beds as stated before are driven by the toothed wheels 4 4 in their horizontal travel, and these wheels also control the ascent and descent of the respective beds when passing from one guide way to the other. This is brought about in the following manner: The bed B for example (see Fig. 4) being in the upper guide ways and in the position indicated, viz., with the middle pins in the larger space 25 of the wheels 4* when the space comes into engagement with the rear shafts 1O 10 the bed reaches the end of its horizontal forward motion and the forward rollers 9 9 are at the entrance of the semi-circular guide ways 2 and the rear rollers at the entrance of the forward intermediate guide .Ways 3 The space 15 holding the rear end shafts 10 10 the bed descends, the rollers following the guides and the toothed wheels turning with a regular speed control the de' scent of the rear end of the bed which can move no faster than the wheel turns. The bed descends horizontally (preserving its position with respect to the impression cylinder) and its forward end depending on gravity alone to carry it down is prevented from dropping suddenly by other mechanism which will be presently described.

The spaces 15 of the wheels hold the rear end of the bed until the latter reaches the lower horizontal guides when the wheels cause the bed to travel back to the rear of the machine in the said guides. While the bed B was descending as described, the bed B at the rear end of the machine was being lifted from the lower to the upper guide ways-this being accomplished by the toothed wheels 4 engag ing the forward end shafts 10 10 of the bed and lifting this end up through the rear intermediate guide ways 3-the rear end of the bed in this case being lifted by mechanism which will be now described.

In a standard on the bottom frame of the machine and in the center of the same is fulcrumed a rock lever 12 which at each end is pivoted to double links 13 13. The upper ends of these links are pivoted to the upwardly curved ends of connecting beams let 14 fulcrumed on a shaft 15. Between the upper ends ofithe'links are pivoted

anti-friction rollers

16, 17 which bear against the under side of the beds B B wheenver the said beds are about one half their length past the toothed wheels 4 4:, that is, when the middle pins of the beds are in engagement with spaces of the wheels ,as in Fig. 4:. The anti-friction rollers bear up against the beds B B when the latter are respectively in the upper and lower guide ways. Hence the end of the lever 12 under the front end of the press is elevated and the other end correspondingly depressed as shown in Fig. 4:. When therefore the bed B descends it forces the front end of the lever down and the other end up thereby raising the bed B correspondingly with the descent of bed B. In this way the weights of the beds are made to counterbalance each other and the toothed wheels, one pair of which is operating to force the bed B down, while the other pair are exerting a lifting force on B are required to exert but little power to carry the bed B up into the upper guide ways 1. Thereby the strain put upon the main driving gears instead of being great enough to lift the ascending bed bodily is diminished by the weight of the counterbalaucing descending bed.

One end of the rock lever 12 is connected by a slot and pin joint, to compensate for the vertical curve in which the end of the lever moves, with the vibrating ends of rock levers 18 18 which are joined to the inner ends of rock shafts 19 19. To the outer ends of these rock shafts are joined other rock levers 20 20 which at their vibrating ends carry rollers 21 21 that are placedin guide ways in the ends of rock levers 22 22 on either side near to the side frames of the machine. The said rock levers are fulcrumed at theirmiddle line to standards on the frame of the machine and their ends carry resisting bars 23 23 the upper ends of whichare forked and turned toward the guide ways. The levers 22 and bars 23 form the stop motion for arresting the travel of the beds in the guides both on the forward or printing movement and the return movement. In order that they may present an elastic resistance to the motion of the bed the bars at each end may be provided with an air spring con- IIO sisting of an oscillating cylinder 24E pivoted to a casting as shown and a piston attached to a rod which makes a pivotal connection with a bar 23 that joins transversely the resisting bars 23 23 at each end of the machine. An air-spring for the bars at one end only is shown, but it is to be understood that the bars at the opposite end are to be likewise provided with an air-spring of the same construction to arrest the rearward motion of the beds. The rock levers 20 are connected to springs 2O (see Fig. 4. only one being shown) which serve to counterbalance the weight of

levers

18, 20 and 12 and to exert a constant upward pressure, but they are not indispensable, as the beds while traveling horizontally produce somewhat the same effect on the levers as may be best seen in Fig. l.

In place of the air spring any suitable form of spring or other device suitable for arresting the motion of the bed may be substituted for the air spring.

The open ends of the forks on the bars being turned toward the beds, by oscillation of the levers 22 they are caused to move up or down as the case may be until they are in line with the horizontal guide ways as indicated by the dotted lines in Fig. 2-it being understood that when the forks at one end of the press are in line with the upper guide way, those at the other end are in line with the lower guide way, and vice versa. While moving up and down the heads of the forks are intended to travel in line with the guide ways, that is to move in a semicircular curve parallel to the end guide ways 2 2 They are prevented from turning backward beyond the guide ways 2 2 by the spring connections and their movement forward is limited by rollers 26 pivoted on them coming in contact with fixed upright guides 27. The forks are thus caused to travel from a point a little distance from the ends ofsay the upper guideways-backward and around the semi-circular end guidewvays to about the same distance from the end of the lower guide-ways and at the rear end of the machine they travel in the same manner and to the same extent from the lower to the upper guide ways. The positions of the two forks when the motions of the two beds have been completely arrested and the beds are half-way between the upper and lower guide-ways are shown by the solid lines in Fig. 2, while the positions of the front forks when the bed has left them to return to the rear end of the press, and that of the rear forks when the bed has left them to pass under the impression cylinder are indicated by the dotted lines in the same figure. The forks are directly in line with the toothed wheels 4 4. Consequently their position with respect to the beds is such that when the beds approach them they pass between the sides of the beds and the carrying rollers 10 10 in the guide ways and therefore the short shafts on which the rollers are mounted pass into the forks. Thus the beds instead of passing into the semi-circular vertical guideways while under full headway are first intercepted by the forks and bearing these backward meet with the resistance of the air or other springs and thereby their forward motion is gradually arrested and is fully stopped by the time they arrive at the halfway point between the upper and lower guide ways. From this point they begin to move in the opposite direction, each being propelled by the toothed wheels 4 43 as before described, and driven by the air springs which cause the forks to follow it until the rollers 26 reach the guides 27. This action of the air spring greatly aids the toothed wheels in propelling the beds especially at the point where the front toothed wheels 4 4: are lowering the bed B downward to the lower guide ways as in Fig. 2.

The rollers on the ends of the beds that are driven around from one set of horizontal guide-ways to the other by the bed propelling wheels 4: t, that is, the front end of the bed in one case and the rear end in the other, are guided in their vertical movements by switches 28 28 pivoted to the plates 10' set in recesses in the side frames between the upper and lower guide-ways as heretofore described. The switches are thus within the guide ways and in line with the rollers 9 9. They are positively operated by mechanism presently described so as to be turned out of the way of the rollers that run up or down in the end guide ways, and when these have passed to turn across the guide-ways to intercept the following rollers. This mechanism is as followsz-The pivots of the switches are carried through the side frames, and the upper pivots carry fingers 29 29 that are engaged by the forked oscillating levers 3O 30 on the pivots of the lower switches as shown in Fig. 1. The oscillating levers are connected by rods 31 32 with a link Rod 31 has an arm 34: carrying a roller which rests against the face of a double cam 35 on main shaftM and is also connected with a spring rod 36 which carries three independent springs for safety so that one spring would act if the other two should weaken. By means of the double cam and spring rod, and the connecting rods and links the levers 30 30 are oscillated twice during each revolution of the main shaft and thereby the front and rear switches 2828 are each opened and closed four times during a complete revolution of each of the beds. The arran gement of the connecting rods is such that both sets of switches are opened and closed simultaneously. The operation is as follows: When the forward end of bed Band the rear end of bed B approach the propelling wheels 4: 4: respectively the high faces of cams 35 bear against the arms 34, and thereby through the connections cause the points of the switches to turn toward each other and out of the way of the rollers on the bed shafts and remain in that position until the said rollers and the IIO ends of the beds pass the said propellingwheels when as the low faces of the cams begin to bear against the arms 34, the spring rods force the said arms in the opposite direction and thereby the switch points are caused to turn away from each other and across the guide ways to the position shown in Fig. 2 before the shafts of the rollers on the opposite ends enter the large spaces t of the wheels, so that the switches now lie in the path of the said rollers on the oncoming ends, and the rollers come against the curved faces of the switches at or about the time the shafts enter the spaces t of the propelling wheels. The end of the bed B is therefore held be tween the teeth of the wheels 4 4 and the curved faces of the switches and thus held they pass down the vertical intermediate guide ways. Therefore it, is impossiblefor these ends to hammer against the sides of the guideways or to jar or fail to pass smoothly and certainly from one to the other of the guide ways. The other ends of the beds being held by the forked levers of the stop motion mechanism the beds are held firmly and in a perfectly horizontal position while passing up or down.

The beds B B are of equal length and for the purpose of describing their motions with respect to the cylinder the front ends or'those ends which are always in advance when an impression is being made are marked ff while the rear ends are marked f f. The

beds are constructed with longitudinal ribs.

2) on their under sides, which ribs have bottom flanges that furnish a broad bearing surface for the bed, when passing over the supporting roller under the impression cylinder, and at the ends on both sides the roller shafts 1O 10 are journaled in strong brackets 37 37 fixed to the ends or four corners of the beds. The entire weight of the beds is supported by these shafts and rollers during their revolutions in the guide ways; but as these support the ends only, to avoid any possibility of the bed yielding when the impressions are taken at which time they are subjected to the greatest strain, and to relieve the shafts 10 10 of this extra strain the main driving shaft S which is immediately under the impression cylinder axis carries a roller 38 which is mounted loose on the said shaft so as to rotate independently. The roller is about the same width as the beds which bear on it when passing under the cylinder and by it is supported in the line of the impression. The beds also carry racks 39 39 on their upper side edges which by engaging the toothed segments 40 4O rotate the cylinder when the beds pass under it. The toothed segments on the cylinder which are of equal length are separated by blank spaces 4141 one half the length of the toothed segments. The impression surfaces 1,1 of the cylinder correspond tothe toothed segments while the parts of the surface corresponding to the spaces 41 41 are blank so that the cylinder is arranged to rotate at such a speed that the two impression surfaces I, I

respectively come into position to make an impression as the front ends of the beds B'B arrive at the impression line of the cylinder.

In order that each bed may make one complete revolution around the guide-waysthat .is from one impression to the next-shafts S S carrying the bed propelling wheels must make five revolutions while the cylinders rotate once; but six or seven revolutions may be given if it is desired to run the beds farther out by lengthening the guide-ways. This is necessary in order to use a small impression cylinder running at a comparatively slow speed-that is to say about three-fifths as fast as that of the beds in general. If the cylinder were made to run ata uniform speed with the beds its diameter would have to be five times the diameter of the propelling wheels. It could be made that way, but it is preferred to make it three times the diameter of the Wheels 4 4 and run it at a slower speed. This is preferred because in the first'place the cylinder.

can be made much smaller, and second it enables the cylinder motion to be varied, .slowing it down at the moment of taking the sheet and thereby insuring a perfect register, and bringing it up to its normal speed when the impression is about to be made. As the beds run at a uniform speed and drive the cylinder only while making the impression the irregular motion of the cylinder must take place when the bed racks are out of gear with the cylinder-that is in the interval between the making of one impression and the next. To this end when one impression is completed a train of irregular gearing between the driving pinion P and the cylinder is brought into operation which slows the motion of the cylinder for one half the interval between the impressions, during which the cylinder gripperstake the sheet from the feeding table, and then increases the speed of the cylinder during the remaining half of the interval so as to bring it up to the full speed by the time the second form bed comes into position to engage the cylinder segments and thereby avoids a shock or jar by the bed racks coming into gear with the cylinder segments. The mechanism forbringi-ng this aboutis as follows, referring particularly to Figs. 3, 4, 27 and 28zThe drivingpinionPmeshes withatoothed wheel 42 on a shaft supported-in a bracket fixed to the outside of the side frame of the machine. The timing pinion P is one half the diameter of the bed propelling wheels 4 4 and the wheel 42 is one sixth the diameter of the cylinder. An elliptical gear wheel 43 is mounted on the same shaft as wheel 42 and fixed to the said wheel by a pin or other device so as to revolve with it. On a parallel shaft supported in the same bracket is another toothed wheel 44 which is in position to engage a toothed segment 45 on a wheel 46 fixed to the end of the cylinder shaft outside of its frame or bearing and on the same shaft with wheel 44 is mounted another elliptical gear wheel 47 likewise fixed to wheel 44 IIO by a pin or other device so as to revolve with it. The elliptical gear wheels are in mesh wlth each other in such relation that the shorter axis of wheel 43 gears with the longer axis of wheel 47 and thereby gives an irregular motion to the wheel 44 and thence to the cylinder through the segment 45. These segments 45 correspond to the spaces between the cylinder segments, so that the irregular motion is communicated to the cylinder only during the time betwen the releasing of one cylinder segment by one bed and the engagement of the next segment by the following bed, and the adjustment of the elliptical wheels 43 47 is such that when the last tooth of a bed rack disengages a cylinder segment the long axis of elliptical wheel 43 which is in gear with the driving pinion, is about to engage the short axis of wheel 47 and as at this moment the wheel 44 comes into engagement with a segment 45 the cylinder is then controlled by the irregular gears and its mot-1on 1s slowed until one half the segment 45 passes a vertical line drawn through the axis of the cylinder-that is until the cylinder is in the positions shown in Figs. 1, 3 and 4 where as indicated in Figs. 1 and 3 a gripper (66) on the cylinder is in position to take a sheet from the feed board. Thus as will be seen the cylinder takes the sheet while moving at lts slowest speed, a result which makes it posslble to obtain a perfect register as there is no liability of the grippers slipping before taking hold of the sheet as is apt to occur when the cylinder is running at full speed.

When the cylinder passes the point above mentioned its speed is increased by the larger ax s of the wheel 43 approaching the shorter axls of wheel 47, and it reaches its maximum speed corresponding to the motion of the bed when the rack of the oncoming bed engages the cylinder segment preparatory to the making of another impression.

The impression cylinder-The impression cylinder as before described has two impression surfaces I I separated by blank spaces 41 41 and each impression surface has a set of grippers 66 66 which are operated (opened and closed) by tumblers 67 and spring rods of the usual construction, but located at op- V posite ends of the cylinder as indicated in Fig. 14. The tumbler pins 68 which turn the tumblers to close the grippers are placed in holes 70, and those for opening the grippers to deliver the printed sheet in holes 71 for single printing; but for color printing and perfecting the tumbler pins are arranged specially and placed in holes 72 on one side and 73 on the other in the one case, or 73 in the other as will be more fully described presently.

The tumbler pin holes 70, 71 and 72 are located in the side frames of the cylinder housings or in brackets or arms connected with or forming part thereof, and the holes in oneside frame adjacent to one end of the cylinder, are exactly duplicated in position in the side frame on the other side adjacent to the opposite end of the cylinder.

The operation of the cylinder in single printing will be first described.

The feed board is arranged for automatic feeding (the mechanism of which will be presently described) but it can be adapted for hand feeding asis shown in Fig. 3. The sheets are placed against the stops 74 and fed against the feed gage 75 in the usual manner. As represented in Fig. 3 the cylinder is in position for taking a sheet from the table-the grippers 66 being just about to close. The cylinder revolves in the direction of its arrow and takes the sheet and carries it against the form passing under it. lVhen the impression has been made and the grippers carry the head of the sheet to the dotted line a: as Fig. 1 and 14 joining the centers of the impression cylinder and delivery cylinder the tumbler pin 68 in hole 71 on one sidesay the right hand side-opens the grippers and simultaneously the delivery cylinder grippers 75 catch the head of the sheet as indicated by dotted lines Fig. 2 and the delivery cylinder carries the sheet up to the point indicated in Fig. 1. when the high point of the cam 76 on the shaft of the delivery cylinder coming against the pin 77 (as shown in Fig. 3) opens the gripper 75 and the sheet passes over the bridge fingers 78 onto the tapes 79 from which it is taken by the fly F to the receiving table 60 in the usual manner. The second set of impression cylinder grippers 66 follows with another sheet after the impression is made and its grippers when they reach the delivery point are opened by a tumbler pin 68 in a hole 71 on the other side, say the left hand side of the cylinder. See Fig. 3.

Color printing.For two color printing only one set of grippers is used to take the sheets from the feed table, the other set which carries the sheet to take the impression from the second color form, takes the sheet from an auxiliary cylinder 0' which receives it from the impression cylinder after the first impression is made. The grippers used for taking the sheet from the feed tablesay grippers 66 which carry the sheet against the impression surface I and which are opened by the tumbler pin 68 in the hole on the right hand side of the frame would in single printing be opened by the pin in hole 71 on the same side of the frame, but as the head of the sheet is to be carried to the auxiliary cylinder instead of being taken off by the delivery cylinder the tumbler pin is removed from hole 71 and placed in hole 72 on the same side so that the grippers 66 shall not be opened until they reach the pin in hole 72 when the head of the sheet will be in position to be taken by the grippers of the auxiliary cylinder.

To prevent the delivery grippers from taking the sheet that is carried first to the turning cylinder the high part K of the cam 76 l gliverycylinder. as

that operates the grippers is made to slide so as to be out of the path of the roller and keeps the grippers closed when passingline w w. (See Figs. 9 10, 11, 14 and 17.) For this movement a lever L is pivoted on the cylinder housing (Fig. 1) which on its lower end is cam shaped. This lever is Worked by a cam N (see Fig. 17) and its lower end being pressed outward by cam N causes the upper end to move in and push the sliding part of cam 76 in the path ofthegripperrollerwhich then closes,and takes the sheet. Spring N Fig. 1 acts the opposite way and keeps the cam out of the way when the sheet has to pass to the turning cylinder.

When the machine is arranged for single printing, and a sheet is delivered at every impression, the sliding part K of cam 76 is prevented from moving in and out, by means of a set screw or other suitable device for holding it against the action of the spring N. The cam N is located in such a position that when theforward end of, say, the impression surface I is near the line passing through the centers of the delivery and impression cylinder, it will strike the lever and cause it to operate the slide K.

The grippers 66 are arranged to be operated exactly the reverse of grippers 66*; that is, the tumblers of the latter set of grippers being placed at the opposite end of the cylinder from that last described and it beingintended that these grippers shall be closed when passing the feeding table and opened'when they arrive at the delivery cylinder, the" ttuibler pin is then removed from the hole/"u" on the left hand side of the machine and placed-in the hole 71 on the same sidesoas to open the grippers 66 when they Ieach the delivery point to transfer the .Elleet to the delivery cyllnderg phsrs 66? are open when they arrive at the point where they take the sheet from the turning cylinder, that is just beyond the linejc' m, and as soon as the head 0f the Sheet S carried under them by the n g y I er, the s'aid grippers are closed by e t mb er pin inhole 72 on the left hand i e of e machine;

- liary'cylinder G which is half the diameter of the impression cylinder is prefr b y mposed of a number'of wheels or dlsks ounted on a shaft supported in bearg in trrnsprojecting from the stand or cap g 'Q Qthe impression cylinder and opposite It carries grippers 76 rare mounted on a shaft that carries at l fend .an arm 77 with a roller at the free which bears against a cam 78 mounted y on the cylinder shaft. A lever 79 fuld to the impression cylinder housing e side has its upper end connected with 80 on the cam 7 8 and its lower slotted held by a pin 81 placed eccentrically in e cam 82 in holes 82 in the said cam in the position indicated in Figs. 1, 12, 13 and 29 which}; is mounted on the end of the impressiod cylinder, and gives motion to a part of iug apparatus as will be described hereinafter. The pin 80 it is to be noted here is placed above the high portion of cam '78 and the eccentric pin 81 is placed on the left hand side of the axis of the impression cylinder. In this respectthe arrangement of the lever with respect to the cam and cylinder is different from that of the same devices when adjusted for perfecting as will be presently described. The eccentric pin 8t vibrates the lever 79 and thereby the cam 78 is oscillated carrying the high portion of the cam against the arm 77 to open the grippers 76 and the low part against the arm ,to permit the usual gripper-spring to close the same.

As represented in Fig. 13 the impression cylinder grippers 66 and auxiliary cylinder grippers 76 are not quite at the opening and closing point, but a very slight further movement of the impression cylinder carries the tumblers of grippers 66 against the tumbler pin in hole 73 and opens those grippers and releases the sheet and at the same moment the arm 77 passes from the high part of cam 78 to the low part of the same and the grippers '76 close and take the sheet. As the auxiliary cylinder during the above oper h.

tions s v g in the .diteotinnsoiitw fi" th heet isldrawn by its otfthe imry 'Qvlinfie -xiliary cylinder. makes onerevolution carrying the sheet and just before it reaches the line 0c 00 joining the centers of the two cylinders, the lever 79 meanwhile having moved to the position indicated by the dotted center line in Fig. 13, and the cam 78 having moved to the left correspondingly, the arm 77 passes on the high part of the cam thus opening the auxiliary cylinder grippers at the line 00' as just at the moment the impression cylinder grippers 66 the impression cylinder having made half a revolution close and take the sheet. The impression cylinder now has control of the sheet on its impression side I and it is carried by the cylinder and receives an impression from the second color form carried by the bed B. When the impression cylinder grippers 66 holding the sheet pass the feeding point they remain closed as the tumbler pin on the left hand side is out of the hole corresponding to 70, but as the pin on the same side is in the hole corresponding to 71 (the delivery point) the grippers 66 are opened and the head of the sheet is taken by the delivery cylinder grippers and the sheet having received the two color impressions, is delivered from the machine in the manner heretofore described in single printing.

Perfecting.For perfecting the same auxiliary cylinder '0' is used but it now becomes a turning cylinder for reversing the side of the sheet after" it has received the first impression on one side. It is no longer driven from the cylinder wheel 46 but its as indicated by the dotn cylinder; artdicarried around the 1 printing heretofore described.

wheel 46 which for two color printing is in gear with cylinder wheel 46, is loosened on its shaft and moved outward until it disengages wheel 46 and a pinion 83 fixed to the wheel 46, is put into gear with a sector rack lever 84. which has its lower end pivoted to the bracket that carries the irregular gear wheels heretofore described. (See Figs. 3 and 7.) The turning cylinder as it will now be called as set for taking the sheet after the i1npression on one side is made, is shown in Fig. 12 and it will be observed that it is in the same position as in the two color printing arrangement (Fig. 13) but the pin 80 that holds the end of the slotted lever 79 is placed in the hole to the left of the high part of the cam 78 and the pin 81 that holds the slotted end is placed in a hole in the cam 82 to the right of the cylinder axis. This arrangement leaves the cam in position to open the grippers 76 just before they reach the line m 00 through the centers of the cylinders and to close them when they reach the line with the impression cylinder grippers 66 as shown in said figure to take the sheet and carry it around theturning cylinder,asinthe two color The object 'inhus adjusting the lever and cam is to swing the cam fi er enough out of the way when the turningcylinderf mksupashereinaftert1escribed and has nearly competed thattmolti on to prevent the turning cylinder gripp et-"sflfom opening against the latter or rear halfcofi the impression surface Isay at or about the point z.

The turning cylinder in Fig. 12 is about in. position to take the sheet from theimpressioncylinder grippers, after it has received the impression on one side from the form on bed l3 and carry it around preparatory to turning it and transferring it again to the impression cylinder with the blank side out. The direct motion of the turning cylinder is received from the sector lever84 engaging the pinion 83 when moving in the direction of the back of the press. The sectorleveris moved by a top earn 85 fixed to the cylinder wheel 46 a roller on said sector lever runningin the said cam as shown in Fig. 3. The cam is constructed to act on the sector lever to con1- mence to move it in the direction of its arrow when the grippers 76 on the turning cylinder are at about the point 2' (see Fig. 12) and when the sector lever has moved the turning cylinder and its grippers to the position they occupy in Fig. 12 where the grippers take the sheet the roller of the sector leveris at about the point y of the cam. As the impression cylinder advances in the direction of its arrow, the cam from the point y is shaped to give the turning cylinder by means of the sector lever the same speed as the impression cylinderthis movement continuing until the roller of the sector lever reaches the highest point of the cam. At this time the turning cylinder has advanced far enough on its direct movement for the bottom end of the sheet to have passed the ends of the spring fingers 86 which are attached to the switch 87 and bear lightly against the turning eyl- 7o indcr as shown in Figs. 1 and 18. At this moment the sector lever roller passes the high part of the cam and the motion of the lever being thereby reversed the turning cylinder is rotated backward and the sheet is backed up that is its bottom end is caused to pass over the spring fingers 87 and the sheet is taken off the cylinder and caused to pass down between the switch S7 and tapes 89 to a point t (Fig.1). The gripper end of the second impression surface having by this time reached the point t the grippers 66 are closed by a tumbler pin placed in a hole 73. The forward end of the sheet is caught by the grippers 66 and drawn down on the impression surface I in reversed position that is with the printed side against the impression surface and the blank side is carried against the second form B and another impression is taken therefrom by the sheet, which thereupon is carried to the delivery point, the grippers opened by the tumbler pin and the sheet printed on both sides is taken off by the delivery cylinder.

The turning cylinder grippers 76 are 5 opened when backing up the sheet, to release it by the following mechanism-referring to Figs. 2, 5, 6, and 29: On the end of the turning cylinder gripper shaft opposite the cam 78 is a crank and roller 88 in position to come :00 incontact with a switch cam 89 on a projection oithe arm in which the shaft is mounted. This swi'teil cam consists of two fingers pivoted at the center to the arm in the position shown in Fig; 2*+-the lower finger being con- :05 trolled'bya springahich keeps it thrown outward and the upper correspondingly inward, so that when the turning cylinder 15 running ahead the gripper roller s3 passes under the outward bent finger thereby forcing the in- 1 to ward bent finger out wherebf yt p ses the cam without opening the grippers; but when the turning cylinder is backing l p 11 he 1lrection of arrow 1 the roller SEP B Ove the inward bent part of the cam which causes the roller to turn the shaft and ope h QW- pers 7 6 and thereby release the sh t efore' the grippers pass the spring fingers 8 Aft the sheet is thus released the turning CYII der continues to rotate backward ut 1111p sector lever is at the point indicated l l 3 when the grippers 76 are at the The tapes 89 are driven coincidently with? turning cylinder by a belt 90 andinterm'. ate gear 91. The belt 90 runs overa p 92 on the turning cylinder shaft and pulley 93 on a shaft 94 under the lower wheel that carries a gear wheel 95 in with a gear wheel on the lower tape w shaft. Motionis thus given to the tapes f the turning cylinder shaft and the use of cross belt is avoided, but the tape Wheels m1 be geared to a wheel on the turning cylinder shaft and driven directly if preferred. g

If a short sheet is to be printed on both sides it will be necessary to arrange the cam and sector lever 84 so that the latter will commence to move the turning cylinder a little later in the course of its throw. Otherwise the free end of the sheet on the cylinder would I be carried over so far that on the reverse movement of the cylinder the said end would not be backed up i far enough to reach the impression cylinder grippers at the point t. For this purpose the cam 85 is made adj ustable on its axis by means of a slot 85 formed in its web and a set screw passed through said slot into an arm of the wheel 46. (See Fig. 3.) By this means the cam 85 can be turned upward and secured so that the sector lever roller will advance say to the pointy in turning the cylinder, to take the sheet from the impression cylinder and thereby the turning cylinder grippers will be caused to stop at about say the point z or just far enough to carry the free end of the sheet above the spring fingers and then by a reverse movement to back the sheet up from this point as heretoforedescribed.

To adjust the grippers on the turning cylinder to agree with the changed position of the cam and the lever for taking the shorter sheet, the turning cylinder is connected with the hub of wheel 46 by a set screw (see Fig. 6)- and by loosening this set screw the said cylinder can be turned until its grippers are in proper position for taking the sheet corresponding to the changed adjustment of the cam and lever.

The inking apparatus-The inking mechanism is divided into two parts I I which may be operated together as a whole for.singleprinting but in color printing and perfecting the parts are worked independently.

In perfecting and color printing each part of the inking apparatus feeds its corresponding bed. For this purpose they are constructed to move up and down being held between guides 96 see Figs. 1 and 21 the first on the cylinder housings and the latter fixed to the top of the side frames, while the two parts join each other with a sliding connection as indicated in Figs. 1 and 23 the fountains serving as braces to prevent vibration of the stands and one guiding the other when moving up and down. Stanchions 97 98 connect with their respective parts I I and the lower ends of the stanchions rest on and are guided by set or' adjusting screws 99 on opposite sides of the fulcrum of levers 100. The ends of levers 100 are provided with rollers which work in cams 101 101 on main shaft M. By this means these two parts are caused to rise and fall alternately as represented in Fig.3. The rollers'of the levers rest on the middle stills of cams 101 and both parts of the inking apparatus are at the same .level. As soon as the highest parts .9 of the cams reach the rollers the levers will be depressed and the part I raised high enough to clear the oncoming form and at this time the other part 1 1s down in its inking position and will feed the ink to its form. When the form has passed, the lever rollers travel to middle still points 8 of the cams and lower the part I to the level of part 1 When the next form approaches the inking apparatus the lever rollers reach the lowest partof s of the cams and the lever is raised, the stanchion next to the cylinder lifted and with it the part I is elevated out of its inking position, stanchion 98 is lowered and with it part I is depressed to ink its form. WhenXthe lever roller is on either of the middle still portions of the cams the tops of the stanchions are at the same time even with the side frames of the machine, and the two parts of the inking apparatus are supported on the top F of side frames of the machine by shoulders 102 on the respective stanchions, which when thelatter are lowered bear on the tops of the side frames as shown in Figs. 22 and 25". The object of this construction is to avoid letting the entire weight of the ink stand frames and fountains with their accessories rest on the form rollers when the support afforded by the levers is removed at such times. A slight play is allowed by the set screws under the stanchions to compensate for the idle motion of the lever when both forms are down in theinking position.

The above described mode of operating the inking apparatus is peculiarly adapted for two color printing and also for perfecting. 'As may be readily understood one part of the apparatus may be used for feeding ink of one color and the other for another color each being a perfect inking apparatus of itself.

For perfecting where great care is required in inking the forms to prevent smutting or off-setting and where it is important to adapt the quantity of ink fed to the nature of the work the two part inking apparatus is especially valuable as thereby the forms can be suitably inked to the matter printed on the respective sides. For single printing the inking apparatus may be used as a whole by placing a composition ink roller 103 between the two middle rollers presently referred to thereby obtaining a six or eight roller inking apparatus for one form. By lowering screws 99 99 a few turns the motion of lever l00'will not be transmitted to the stanchions and the whole inking apparatus is at rest.

Figs. 21 to 25 and Figs. 33 to 35, inclusive illustrate a three roller and a four roller inking apparatus each of which is entirely distinct from the other but are placed in juxtapc sition to indicate the method of driving them from the same shaft by merely shifting a, wheel. They are not it must be understood used together, but if two three roller apparatuses are used the driving shaft connects with them at one point, and if two four roller apparatuses at another point as will presently be described.

The four roller apparatus is showncomplete with turning and sidewise distributing movements which can also be used with slight