US1567178A - Printing press - Google Patents

Description

1,567178 Dec. 29, 1925 E cHEsl-RE PRINTING PRESS Filed Oct. 11, 1919 13 Sheets-Sheet 1 W .inuerzv" i x J dw rdzedhrex l a I I 1 Dec. 29 1925- E. CHESHIRE PRINTING PRESS Filed Oct. 11, 1919 13 SheetS-ShQBt 2 liwem n ma rd U/Zeako ra Dec. 29 1925 E. CHESHIRE PRINTING PRESS Filed Oct. 11, 1919 13 sheets-Sheet 3 I jive/227', d0 ar Zea 'r@ M "Ma Hill Dec. 29, 1925- 1,567,178

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rllll llllllll I 1 J Patented Dec. 29, 1925.

UNITED STATES PATENT OFFICE.

EDWARD CHESHIRE, OF MILWAUKEE, WISCONSIN,

ASSIGNOR, BY MESNE ASSIGN- MENTS, TO MIEHLE PRINTING PRESS & MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PRINTING PRESS.

Application filed October 11, 1919.

To all whom it may concern:

Be it known that I, EDWARD CHESHIRE, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Printing Presses, of which the following is a speci fication.

This invention relates to printing presses,

and more particularly to a cylinder printing )I'CSS. 1 One of the objects of this invention is to simplify the cylinder type of printing press, all of the principal motions being rotary or reciprocating, or a combination of the two, and the parts disposed in a manner whereby the same run in perfect balau.:e at comparatively high speed.

Another object is to provide improved cylinder mechanism and associated cooperating parts.

Another object is to make the various parts more accessible.

Another object is to transfer the stock from one part of the press to another in a novel and practical manner.

Another object is to control automatically in an improved manner, the operation of the various parts of the press, and to arrange the parts to cooperate in a given seuence to meet the various requirements for successful commercial operation.

These and other objects are accomplished by the printing press illustrated on the accompanying sheets of drawings, in which Figure 1 is a side elevation of my improved printing press, the suction shoe being in position to grip a pieoe of pa er or other stock from the stock pile, and tie delivery grippers having just delivered a printed sheet to the jogger.

Figure 2 is an enlarged fragmentary side elevation of the same printing press, the cylinder being in a raised position, in which po ition the printed sheet is taken therefrom. and in which position another sheet is placed upon the transfer table by the suc tion feed gripper.

Figure 3 is a vertical sectional view taken just inside of the side frame and from the side opposite to that shown in Figure '2, the

Serial No. 329,976.

section being taken along the line 33 of Figure 5.

Figure 4 is a view taken on the line 4-4 of Figure 5.

. Figure 5 is a front elevation of the printmg press with the stock table removed, the supporting arm of the stock table being shown in section.

Figure 6 is a top plan view of the printmg press.

Figure 7 is an enlarged fragmentary side elevation of the cylinder and some of the associated mechanism, the cylinder being in its upper position.

Figure 8 is a transverse sectional view taken through the cylinder along line 8-8 of Figure 9.

Figure 9 is a longitudinal sectional view taken through the cylinder showing some of the cylinder mechanism.

Figure 10 is a plan view of the cylinder showing the grippers.

Figure 11 is a transverse vertical sectional view of the cylinder showing the lock and gripper mechanism, and taken in the plane of line 1111 of Figure 10.

Figure 12 is a fragmentary side elevation of the cylinder showing the lock for the cylinder gripper.

Figure 13 is a sectional view taken in the planes of the irregular line 13-13 of Figure 12. a

Figure 14 is a detail Sectional'view of a valve forming a part of the pneumatic control mechanism of the printing press.

Figures 15 and 16 are side elevations of cums for controlling the movements of the valve shown in Figure 14, the shaft being shown in section.

Figure 17 is a detail sectional view showing the cam s own in Figures 15 and 16 in plan with their associated mechanism.

Figure 18 is a full-size transverse sectional view of the gripper feed mechanism, the suction shoe being shown in side elevation.

Figure 19 is a fragmentary side elevation of the printing press showing primarily the cylinder locking mechanism and the transfer table registry mechanism.

Figure 20 is a fragmentary front elevation of the arrangement shown in Figure 19.

Figure 21 is a detail sectional view taken in the plane of line 2121 of Figure 20.

Figure 22 is a detail front elevation of a portion of the transfer table side registry mechanism.

Figure 23 is a sectional view taken through the cylinder showing the cylinder lock mechanism and parts for controlling same.

Figure 24 s a sectional view of one of the arms which assist in carrying the suction shoe and showing the pneumatic connection leading through said arm to said shoe.

Figure is a detail lan view of the con-. trol valve which is s own in section in Figure 14.

Figure 26 is a plan view of the transfer table.

Figure 27 is a sectional view of the transfer table taken in the plane of line 27-27 of Figure 26, the transfer table being shown in its forwardmost position with respect to the printing cylinder.

The various novel features of my invention will be a parent from the following description an the drawings, and will be particularly pointed out in the appended claims.

This invention is an improvement on the printing press disclosed in my cozipendmg application Serial No. 224,426, file March 25th, 1918.

Referring to the figures of the drawings, it will be noted that the main frame of the machine includes two side frames 10 and 11, which are connected to each other by three girts 12, 13, and 14, respectively (see Figures 3 and 4 girt, this girt 13 being the bottom girt at the rear of the machine to which a bracket 15 is secured for supporting the motor 16 for driving the operating parts of the press, and girt 14 at the lower front part of the printing press being a bearing girt enclosmg gear mechanism for raising and lowering the cylinder, to be referred to hereinafter. Formed integrally with the side frame member 11 is a forwardly extending arm 17 (see Figures 1, 2, 5, and 6) to which is pivotally connected at 18 the stock table mechanism 19, the table proper of which may be raised either automatically or manually by any suitable mechanism for maintaining the stock on the table at a predetermined height, whereby the top sheet may be ipped by the suction feed gripper to be reerred to hereinafter. Integrully formed with the delivery table girt 12 is an arm 20 (see Figure 3) which carries the jogger table 21 and the associated jogger mechanism.

Mounted upon one end of a shaft 22 of motor 16 (see Figure 6) is a pulley 23-which is uutintained thereon by an eccentricully mounted gravity controlled luck wushcr 24 (see Figure 3). A belt 25 (see Figure (3) passes around pulley l3 and also around .1

the girt 12 being the delivery table pulley 26 mounted upon a pinion shaft 26 (see Figure 3) carrying a gear 26* meshing with and driving a gear 27 mounted upon the main shaft 27 of the printing press. Operativeiy associated with shaft 26' is a hand wheel 26", whereby the press may be operated by hand.

Cylinder mechanism.

Ke ed to the main shaft 27 is a gear 28 (see, igure 3) which meshes with and drives a gear 29 mounted upon a hollow double crank shaft 30. Formed integrally with this shaft 30 are two alined crank arms 31 and 32 (see Figures 3 and'4) to the outer ends of which are ivotally connected cylinder connecting ro s 33 and 34, respectively, which in turn at their upperends are pivotall connected at 35 and 36 to cylinder bBRIIH S 37 and 38, respectively, (see Figure 9). T. ese cylinder bearings are secured to and carried by the cylinder frame 37' having lateral projecting webs 39 and 40, respectively, which are slidably mounted within guideways 41 and 42, respectively, formed in the side frames 10 and 11, respectively. This cylinder frame is retained in said guldeways by gib plates 43 and 44, respectively, which are secured to the side frames 0 and 11.

The cylinder 45 is.carried by the cylinder bearings 37 and 38, the latter being held properly spaced by the c linder pro er. This cylinder 45 has two lbs 46 an 47 which are received by the bearings 37 and 38, res ectively. These hubs 46 and 47 are forme integrally with the aim portion of the cylinder, which includes the semi-cylindrical tympan shell 48 (see Fi we 11), upon which the tympan 49 is lai and se cured at one end between a portion of the I cylinder shell and the cylinder gripper bar 50, which is locked in holding position and released therefrom by two holding arms 51 (see Figures 11, 12, and 13), each of which is mounted eccentrically upon a stud 52, which passes through the cylinder end heads, the eccentric 53 in each case being pinned to a reduced portion of the stud 52, it being understood that the holding arms 51 receive their movement by manually turning the stud 52 by means of a screw driver. The tympan is stretched over the tympan bed 48 and partially secured in position by two square rods or reels M and 55 (see Figure 11), which are held in adjusted position by ratchet mechanisms 56' (see Figure 9) at the ends thereof. Slidubly mounted in the gri per bar 50 along lllt length thereof are a p urality of spring pressed cylinder grippers 56 (see Figures 10. II, and 13), the plungers of which extend radially through the gripper bar, the ends of the plungers each being engaged by u corresponding grip lever 57 (see Figure ll) secured to u grip shaft 58 pivotally mounted bet ween the end iii) heads of the cylinder. Upon one end of the rip shaft is secured a rocker arm 59 carrying at its free end a roller 60 (see Figure 8), which during one part of the revolution of the c linder passes into engagement with a cylin er gripper trip lever 61 fixed to a shaft 62. Mounted in this lever 61 is a roller 63 lying in the path of movement of two cams, a lower cam 65 and an upper cam 66 formed on a slide cam bar 64, which is given a quick reciprocatory movement, at the upper and lower limits of travel of the cylinder 45, by a cam 67 (see Figure 3), the movement from the cam 67 to the slide cam bar 64 being transmitted through a cylinder grip lever pivoted intermediate its ends at 68. One arm of the lever carries a roller 69, which traverses the cam 67, and the other arm 70 of the lever is pivotally connected to the lower end of the cam slide bar 64. In other words, it will be seen that the cylinder grippers 56 are 0 erred by mechanism actuated by the cam 67 keyed to the main shaft 27. It will be appreciated that the grippers must be opened rapidly both at the upper and lower limits of the cylinder travel. At the upper end of the cylinder travel the grippers are opened rapidly by cam 66 to ermlt the delivery grippers 71 to remove tie printed stock away from the cylinder, whereupon it is delivered to the jogger table 21. At the lower end of the cylinder travel the cylinder grippers are opened rapidly by the cam 65 for the purpose of permitting the sheet of paper to be properly alined on the c linder just preparatory to the time that t e cylinder grippers grip the sheet, and preparatory to upward printing movement of the cylinder. The grippers are closed and releasably held closed, as a result of the springs 72 surrounding the gripper plnngers [see Figure 11).

(y lander click: mchanis-mf In this type of machine it is necessary that the cylinder be free to rotate when unlocked for making ready. Normall during the downward movement of the cylinder the latter is unlocked from its driving mechanism but locked against accidental rotation by click mechanism, includi a pawl 166 (see Figure 8) carrying a rol er 167 which, during the downward movement of the cylinder lies in a notch 168 formed in the rim of the cylinder at one end thereof. This pawl 166 is pivotallv connected at one of its ends to a relatively stationary abutment 169 which is mounted upon the cyl inder hub 46 and held against rotation by a 3 bolt 170 which secures it to the cylinder bearing. Inter osed between an car on the member 169 an the free end of the pawl 166 is a spring 171 which yicldahly holds the roller 167 within the notch 168 to prevent accidental rotation of the cylinder. As

stated hereinabove, however, it is desirous to rotate the cylinder during make-ready. To accomplish this it is merely necessary to'insert in one .of a plurality of apertures 172 (see Figure 10) in the periphery of the cylinder rim a suitable rod whereby the cylinder may be given a sna movement, whereupon the roller 167 will e forced out of the notch 168 against the tension of spring 171. It will be understood that the roller 167 will occupy the notch 168 during the downward movement of the cylinder, that is, when the cylinder is not in operation. However, when the cylinder takes its upward rectilinear movement, the latter also rotates and accordingly the roller 167 during such printing operation will not be in the notch 168. However, the roller 167 is presented to the notch 168 at the 11 per limit of movement of the cylinder at wiich time the roller 167 clicks into the notch 168 preparatory to the downward movement of the cylinder.

Cylinder lock.

Under normal operating conditions, the cylinder is rotated through a complete revolution as it is being raised, this movement of the cylinder being the rinting movement. At the upper limit 0 movement, the cylinder is tripped, and accordingly as it is lowered does not rotate, it being understood that the cylinder gap faces the type during the lowering movement of the cylinder. The cylinder also may move u wardly without rotating, in which event t e cylinder is unlocked from the driving gearing, "this being the case when no material has been fed onto the transfer table, which latter is provided with suction means forming a part of the control system to be referred to later.

Referring particularly to Figures 9, 11.- and 23, it will be noted that one end wall of the cylinder has secured thereto a fulcrum 73. to which is pivotall connected a lever 74, to one end of which 1S pivotally connected a movable lock member 75, which may he reci rocated through an opening 76 in oneen of the cylinder, said movable lock member being movable into and out of engagement with a cooperating lock member 77 secured to the web 78 of the cylinder driving gear 79, which meshes with a rack bar 80 rigidly secured to and movable up and down with the bed plate 81, it being understood that as the cylinder moves rectilineurlv in one direct ion the rack bar with the cylinder bed moves rectilinear-1y in the opposite direction. 'hen the lock members 73 and 77 are in locking engagement. the cylinder is caused to rotate, it being understood that during the operation of the nun chine the cylinder drive gear 79 is continuously in motion during upward and dovrnward movements of the cylinder. If the look members 7 5 and 77 are not in looking association with respect to each other, it'will be understood that the cylinder is not rotated, even though it is moved vertically up and down. At the same time, however, the ear 7 9 will be in motion during an upward and downward movement of the cylinder proper. The. lock member is yieldably and releasably held in locked and unlocked positions by a spring-pressed plunger 74, the end of which is oppositely tapered for engaging a roller 74" carried at one end of lever 74.

Pivotally connected to one end of the le ver 74 is a rod 82 which is coincident with the longitudinal axis of the cylinder. Loosely mounted upon the outer end of the rod 82 ee Figure 23) intermediate a collar 83 and a washer 84 is'a saddle block 85, to which is pivotally connected one set of arms 86 of a bifurcated bell crank pivotally supported at .87 on a bracket 88 mounted upon the cylinder bearing 38, the other set of arms 89 of the bifurcated bell crank having pivotally connected at its outer end a dog 90 having a spring 91 which frictionally en gages the side walls of the arms 89 to frictionally hold the dog in various positions. This dog 91 lies in the path of movement of two blocks 92 and 93 on a reciprocating bar 94 havin at its lower end a roller 95 (see Figure 2 traversing a cam race 96 on a cam mounted u on a reduced portion of shaft 30, and having two cusps 97 and 98 whereby the bar 94 is reci rocated downwardly and upwardly a slig t amount with considerably rapidity when the cylinder is at its upper and lower limits of movement, respectively. A ivotal guide member 99 is mounted on tie side frame 11 and is connected to the lower end of the bar 94, the upyer end of the bar being slidably and gludably mounted in a guide block 100 (see Figure 23) secured to the frame arm 17. The dog 90, which receives motion from the cam bar blocks 92 and 93, transmits motion to the cylinder lock member 7 5 for locking and unlocking the cylinder with respect to its driving ar 79. The dog 90, and therefore the cylinder look, is artially neumatically controlled, as will e descri d later. In fact, the main control of the machine is pneumatic.

Pneumatic control system.

A vacuum pump 101, (see Fi ure 2). drivcn by the motor 16, is provided for producmg a vacuum through a system including a conduit 102 connected to a main control valve 103, the movable portion of which may be operated by conveniently arranged hand levers 104. Connected to this valve 103 is a pipe 105, which in -turn is connected to a valve casing 106 and pneumatically connected to a valve chamber 107 (scc Figure 14). Slidably mounted in the valve casing 106 are two valves 108 and 109, the former controlling the vacuum extended through a pipe 110 (see Figure 2) telescopically.

mounted in a vacuum chamber 111 connected to valve vacuum chamber 107, said pipe 110 being connected to a connection 112 (see Figures 1 9 and 20), in turn connected to a pipe 113 connected to a nipple 114 (see Figure 21) mounted on the transfer table frame 115 provided with suction passa eways 116, 117, and 118 (see Figure 26). e passageway 116 leads to one leg of a U-shaped vacuum chamber 119, the passageway 118 being connected to the other leg of the U-shaped chamber, the passa eway 117 being connected at the bend 0 said U-shaped vacuum chamber 119 for purposes to be described later. Secured to the transfer table frame 115 is the transfer table proper 120 (see Figures 26 and 27) provided with a plurality of apertures 121, to which suction is extended, the air being exhausted through pipe 116 toward the vacuum pump. The operation of the machine is controlled through the transfer table, that is to say, when the suction openings 121 are covered by a sheet of material fed from the stock table, the cylinder mechanism is actuated. The cylinder proper, at its upper limit of movement, is unlocked in a manner to be more fully set forth hereinafter, so that the cylinder will not rotate as it moves downwardly. At the'same time the piston plunger of a dash pot 122 (see Figure 7) mounted upon the cylinder frame at the left-hand side is forced outwardly by vacuum extended through passageway 117 (see Figure 26) so that it may en age a yieldably mounted motor switch han le to automatically open the motor switch to stop the operation of the machine if the cylinder moves u ward ly from its lowest position, with the s eet of material still remaining on the transfer table instead of being taken by the cylinder. Also at the same time when the cylinder and transfer table are at their u per limit of movement, the stem 123 (see igure 23) of a similar vacuum plunger 124 is caused to move outwardly into engagement with the dog 90, causing the lower end thereof to move into the path of movement of the block 93 mounted on the cam bar 94 so that said block 93 at the lower limit of movement of the cylinder may be given a relatively short and quick upward movement as a result of the cam cusp 98 (see Figure 2) to engage and slightly lift dog 90 (-see Figure 23), thereby causing the cylinder lock member 75 to move into enga ement with the lock member 77, looking t e cylinder for rotution preparatory to its upward or printing movement. \Vhen the cylinder reaches its upper limit of movement, the block 92 on cam bar 94 moves slightly downwardly with a guick action as a result of cam cusp 97 an passes into engagement with the upper end of dog 90, throwlng lock member 75 out of engagement with lock member 77, or, in other words, unlocking the cylinder and also causing the lower endof the dog 90 to move inwardly out of the path of movement of the block 93 and forcing the vacuum plunger 124 into its inner hmit of movement. This unlocking of the cylinder at its upper limit of movement takes place regard less of sheet feedin conditions, but thereafter, s soon as a s eet covers the openings on the transfer table, plunger stem 123 again is moved outwardly to perform its function. At the upper limit of movement of the cylinder, the cylinder grippers are opened by the action 'of cam 66 (see Figures 8 and 11), whereupon the printed sheet is seized by the delivery grippers 71 (see Fig ure 3) preparatory to being moved to the jogger. During the upward movement of the cylinder and transfer table, a sheet of stock is fed from the stock pile toward the transfer table, and when the cylinder and transfer table reach their upper limit of movement the sheet of stock is placed or deposited upon the transfer table, where it is held by suction extended through the apertures 121, which suction continues until the cylinder and the transfer table, movin downwardly therewith, have almost reache their lower limit of movement, whereupon the sheet is brou ht into proper registering relationship wit the cylinder and side guide. Under normal operating conditions the c linder grippers grip the sheet of materia and the cy inder, which in the meantime at its lower limit of movement has become locked through the action of block .3, dog 90, and associated parts (see Figure 23). then rotates as it is moved upwardly during the printing operation. If, however, the sheet of material is not withdrawn from the transfer table. the plunger 122 which has been forced outwardly will remain out in the path of movement of a switch arm 127 (Figure 7), so that upon the upward movement of the cylinder and transfer table the switch arm 127 will be moved upwardly, causing the motor circuit to be broken and the parts to be brought to a state of rest.

In connection with the neumatic control mechanism, attention is directed to Figures 14, '15, 16 and 17. Mounted upon the cam shaft 30 is a cam 128 which controls the operation of valve 108, said valve having an operating rod 129 pivotally connected at its lower end to one end of a lever mo, the opposite end of which is provided with a roller 131 riding on cam 128. The cam l'ululi's' in a counterclockwise direction as viewed in Figure 15, and in the position shown, the vacuum at the transfer table has been cut off to permit the sheet to be registered, the vacuum being cut off during the interval on the cam indicated between reference letters :v-y. The period on the cam 128 between 7 and 2 indicates the time during which the vacuum at the transfer table is on so that the plunger 122 may cause the opening of the motor switch through switch handle 127 during the upward movement of the cylinder if the sheet of material remains on the transfer table instead of being taken by the cylinder. The period on the cam indicated by z w represents a period durin which vacuum is cut off, the cylinder being about to start its downward movement when the point 21) on the cam is reached. The period on the cam indicated by w n: is a period during which the suction is on at the transfer table, and accordingly on at plungers 122 and 124 when a sheet of material is on the table to cover holes 121; the cylinder and transfer table during this time moving downwardly, and, as stated above. at the point a: on cam 128 suction is cut off to permit registry of the sheet of material. It will be understood that every time the vacuum is cut on at the transfer table. with a sheet of material on the transfer table, the plunger 124 is moved outwardly, causing, through its stem 123, the lower end of the dog 90 to be moved outwardly into the path of movement of the block 93 (see Figure 23).

Suction feed mehhanism.

As mentioned hereinabove, the material to be printed is laced first upon the stock table 19 from w ich it is transferred sheet by sheet to the transfer table 120, from which the material is fed sheet by sheet to the cylinder to be printed, and from which it is taken I) the delivery grippers and placed onto t e jogger. It will be noted, therefore, that sheets of paper are conveyed in succession from the stock supply on one side of the c linder to the latter and that the printed s sets of paper are conveyed in succession from said cylinder to the opposite side of the latter. The material is carried from the stockile to the transfer table by suction feed mec anism, including a. suction shoe 173 (see Figure 18 adjacent Figure 1) loosely mounted in a frame 174, the suction shoe being connected by a flexible tube 175 to a pipe 176 connected to the source of suction through connections including a assagcway 177 (see Figure 24) in one of t e suction shoe carrying arms or feed levers 178 communicating with an opening 179 in the feed arm rock shaft 180 having openings 181 registering with a port in valve 182, which port communicates with a passageway 183 (see Figure 14) within the valve casin 106, said passageway 183 being controlTed by the reciprocatory valve 109. This valve is controlled by a cam 184 (see Figures 16 and 17) mounted upon shaft 30 alongside cam 128. Operatively connecting the valve 199 and the cam 184 is a bar 185, the lower end of which is connected to a lever 186 pivoted intermediate its ends and having at its outer end a roller 187 which directly en 'ages the cam 184. The suction is extender to the sucker shoe 173 at the time that it is desired to transfer a sheet of material from the stock table to the transfer table and during that period only, the cam 184 controlling the proper cut-oil". At the time that the suction shoe 173 grips a sheet of material on the stock table 19 the cylinder and transfer table are in their lowermost positions, and it is during the upward movement of the cylinder and transfer table that the sucker shoe 173 is moved toward the transfer table, and at the upper limit of movement of the transfer table the sheet of material carried by the suction shoe 173 is deposited upon the transfer table whereupon suction is cut off from the suction shoe 173, releasing the sheet of material therefrom. At the same time suctionis established at the transfer table for seizing and holding the sheet of material thereon. As mentioned above, the sucker shoe is carried by arms 178 mounted upon shaft 180 (see Figure 2), one of said arms 178 having a projection 188 at the free end of which is connected a rod 189 to the lower end of which is connected a roller 190 in engagement with a cam race 191 of a cam 192 mounted upon cam shaft 30. The lower end of the rod 189 is steadied and guided by a link 193 pivoted at one end to the rod and at the other end to the side frame. From this connection it will be appreciated that as the cam 192 is rotated the arms 178 and the sucker shoe carried thereby will be reeiprocated back and forth between the stocktable and the transfer table. Pivotally connected to the front end of the sucker shoe structure at 194 (see Figures 1 and 2) is a link 195, to the lower end of which is operatively connected a yieldably mounted block 196 movable back and forth in a slide member 197 pivoted at 198 to the arm 17. Pivotally connected to the slide member 197 intermediate its ends is a spring-pressed rod 199 which has connected at its lower end one end of a lever 290 pivoted intermediate its ends at 201 to the side frame 11, the other end of the lever carrying a roller 202 which cooperates with a cam 203 whereby the sucker shoe is caused to dip into engagement with the top sheet of material on the stockpile at the proper time. as shown in Figure 1 of the drawings. The suction shoe mechanism is ivotally carried by the arms 178 from which such mechanism may be liberated by merely pressing a lever 230 (Figure 5) which 15 operatively associated with a centering plng23l slidahly mount ed in one of the arms 178. Then the plug 231 is withdrawn from its normal position, the suction shoe mechanism, as a unit, may be withdrawn from the arms 178 first by a sidewise and then by a lateral movement.

Registry mechanism.

The transfer table in addition to having an up and down movement with the cylinder is given a rocking movement toward the cylinder as the transfer table and the cylinder are moving downwardly for front registering, and accordingly the transfer table is rocked away from the cylinder a small amount as the cylinder and transfer table are moved upwardly. Also the transfer table is moved transversely for side registry, this movement taking place just as the table and cylinder reach their lower limit of movement. Consideration will he iven first to the forward and backward rocking move- ;nent of the transfer table for front regis- Mounted upon each end of the rod 62 (see F i res 7 and 8) is an arm 135 to each of wine is pivotaly connected :1 turnbuckle 136 to the latter of which is pivotally connected an arm 137 pivoted intermediate its ends to pins 138 on the cylinder bearings. Connected to the up or ends of the arms 137 is the frame carrying the transfer table. Plvotally secured to one of the turnhuckles (see Figure 19) is a block 139 slidably mounted in a slightly inclined stationary cam or guide member 140 secured to the arm 17. Accordingly, when the cylinder is moved upwardly toward its upward limit of movement the transfer table is rocked away from the cylinder, and when the cylinder and transfer table are moved downwardly the latter is caused to rock toward the cylinder so that the advancin edge of the sheet of material approaches 0 oser and closer to the cylinder grippers, and at the point where the cylinder and transfer table reach their lower limit of movement the transfer table has rocked toward the cylinder gripers tothe extent that the sheet of material is placed directly in engagement with the cylinder grip er pins under the heads thereof. As the flansfer table approaches this lower limit of movement, the transfer table also is moved to one side for side registry purposes by means of the following mechanism: One of the transfer table supporting arms 137 (see Figure 6) slidably receives a pin 141 projecting from the transfer table to accommodate side movement of the lat; tor for side registering. The other transfer table supporting arm 137 is clamped to the transfer table structure and has two ears 142 (see Figures 19. 20, and 22) between which is received a tongue 143 formed at one end of a pin 144 carrying a roller 145 movably mounted in an arcuate slot 146 formed in a slide 147 which is slidably lnounted in a guiding member 148 secured to the cylinder bearing. The pin 144 is mounted at one end of an arm 'pivoted at 150 whereby the arm may rock transversely in the guiding member 148, the guidmg member 148 having an oblong opening 151 (see Figure 22) to permit rocking movement of the arm 149 with the parts carried thereby. The lower end of the slide 147 is slotted to receive the headed portion 152 (see Figures 19 and 20) of a spring-pressed reciprocatory rod 153 which is moved upwardly by the lower end of said rod passing into engagement with a projection 154 (see Figure 2) carried on the side arm 17. In this connection, it will be understood that the rod 153 and the associated parts are carried on the cylinder hearing so that it is during the last art of the downward movement of the cylinder that the rod 153 is moved upwardly, and during this upward movement of the rod 153 the slide 147 connected thereto is moved upwardly, causing the pin 144, through effect of cam slot 146, to move to the left as viewed in Figure 20, the transfer table accordingly, as a result of the connections 142 and 143, being shifted laterally for side registering.

It will be understood that at the time that the transfer table is moving sidewise the suction at the table is cut all. one edge of the sheet of material passing into engagement with a side guide 126 (see Figures 6 and 7) for limiting'sidewise movement of the sheet of material for side registering purposes, as the transfer table continues its lateral movement. This side guide arm 126 dips down into the path of movement of the sidewise moving paper just at the time of registering. The arm 126, which normally is held elevated in any suitable manner, is clamped in a jaw member 155 which in turn is secured to a rod 156, the jaw member at the rear end having a projection 157 which passes into engagement with a stationary cam 158 on the gib plate to give the necessary dipping movement to the arm 126 at the pro r moment, the outer end of the arm passing into one of a plurality of grooves 159 (see Figure 26).

livotally connected at 160 (see Figures 7 and 8) to the upper end of one of the arms IE7 is a rocker plate 161, the lower portion of which is connected to a fixed rod 162 in turn secured to a casting 16; forming the support. for the side registry bar 126. The free end of this rocker plate 161 underlies and supports a finger 164 which is secured to the ironing bar 165 which is pivotally connected at 166' to a pair of cars on the frame of the transfer table. From this arrangement it is apparent that when the upper enls of the arms 137 are swung toward the cylinder during the downward movement of the latter, the ironing bar 165 will be permitted to drop into its lowermost position, which position it assumes when the cylinder is in its lowermost position and at which time the sheet of material is drawn from the transfer table onto the cylinder by the cylinder grippers,

Delivery mechanism.

The printed sheets of material are taken from the cylinder when the latter is in its upper limit of movement and delivered onto the jogger by the delivery grippers 71 (see Figures 1, 2, 3, and 4) which include upper and lower jaws 204 and 205 (see Figure 4), which normally are held in closed position by a plurality of springs 206 surrounding pins 207 secured to a bar 208 interposed between the upper and lower jaws. These jaws at their rear ends are secured to a shaft 209 having flattened portions to which also are connected delivery levers 210 which are secured to a rock shaft 211 (see Figure 3). Also secured to the rock shaft is a leg 212 (see Figure 4) havin a guide groove for the reception of'a rolliar 213 mounted upon one side of a cam 214 which is mounted upon the main shaft 27. Accordingly, as the cam 214 is rotated the delivery levers are oscillated back and forth between the cylinder 45 and the jogger 21. The jaws of the delivery grippers must be open at the time that a printed sheet of material is to be withdrawn from the cylinder and also at the time when the printed sheet is to be delivered to the jogger. To open the jaws, I have provided a lever 215 which is operatively connected to the bar 208 and also connected to a collar 216 slidably mounted upon one of the delivery levers 210 to which collar is pivotally connected a link 217, which in turn is pivotally connected to one arm of a bell crank lever 218 pivotally connected to the frame at 219. The other arm of the bell crank lever is provided with a roller 220 which cooperates with a cam 214 having projections 221 and 222. When the cam projection 222 engages the roller, the gripper jaws 204 and 205 are open for grippinr the printed sheet on the cylinder to remove the sheet therefrom, and when the roller 220 is engaged by projection 221 the printed sheet has been conveyed it: and is located over the jogger. at which time the jaws are again open to permit. said sheet to he deposited on the jogger. At the time. that the deliverv grippers grip the printcd sheet of material on the cylinder it is necesrary that the active ends of the grippers be fill

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