US1268262A - Tripping mechanism for printing-presses. - Google Patents

Description

R. MIEHLE.

TRIPPING MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED FEB. 5, I917.

Patented J une I 1918.

3 SHEETSSHEET I R. MIEHLE.

TRIPPING MECHANISM FOR PRINTING PRESSES.

APPLICATION FILED FEB.5,1917.

l fifi gfigo Patented J une 4, 1918-.

3 SHEETS-SHEET 2- A TTORNEY R. IVHEHLE.

TRlPPlNG MECHANISM FOR PRINTING PRESSES.

. APPLICATION FILED FEB. 5, 191?. l gwg g Patented June 4,1918,

Q 3 SHEET--SHEET 3A pnirnn snares rainnr @FWCE.

ROBERT 1V[IEHLE, OF CHICAGO, ILLINOIS.

TRIPPING MECHANISM FGR PRINTING-PRESS'ES.

Application filed. February 5, 1917.

To all whom it may concern:

Be it known that 1, ROBERT MInItLn, :Cllllzen oi the United States, residlng at Chlcago, in the county of Cook and State of Illinois, have invented a certaia ;new and useful Improvement in Tr pping Mechanism for {rant-1rig-Presses, oat which the FliOllOWlllg isa tnlhclear, concise,and exact description.

This invention relates to tripping mechanisms tor multicylinder printing presses, andespecially for the type of press known ,as a two-color press, in which the same sideo f the sheet receives two successive impressions from the cylinders respectively, but invention is .not to be limited to pressesof ,this

In tripping mechanismit is desirable that the COllSi-ILlChlOIlIbGSllGll that thetrlpping of one of :the cylinders will follow automatically at a later and definite ,p'eriod withrefl lerence to the time of tnippingythe other; and a that either cylinder may be tripped separately or independently of the other. .Snch

'characterof trippingmechanism has hereto- ;iore been applied to two \cyhnder pmntmg presses, as shown in the United States pattents issued to 'me dated December 24:, H.901, No. 689,505, and December 16, 1913, No. 1,081,320. i

The primaryrobjectlof this invention is to provide an improved tripping mechanism of the described character for plural cylinder multi-color presses or presses having a plu- -alityrofcylinders for respectively printing two or more colorson onersidelot the sheet or one or more-colors on both SIClQS ot the sheet. in accomplishlng this ob ect 0t my invention I employ tripping mechanism in dividual to each cylinder and utilize the movements which bring the first impression cylinder into and out of printing positions, the tripping mechanism ofthe secondcylinder being normally effective to trip the same and the said movements oi the first cylinder serving to position said tripping mechanism of the second cylinder in. ineffective or unimiping position at all tunes when the first cylinderqls in printing position. That is, the first impression CYllIlClGl, or the mechanism that brings this cylinder into and out of printing relation, controls the adjustment of mechanism which is employed tocouple the tripping mechanism pertaining to the second cylinder with that cylinder, the first cylinder breaking the couple between the.

second imaressionc linder and itstri oin t) Specificatimrof Letters Patent.

Patented June t, 1918.

Serial No. 146,579.

mechanism each time the first impression cylinder is brought to printing position. VYhen it isrlesired to trip the second cylinder mechanism is employed for preventing the first cylinder or its shifting mechanism from breaking the aforesaid conple whereby the tripping mechanism pertaining to the second cylinder operates to maintain the second cylinder in its non-printing position so long as the aforesaid couple is broken.

By means of my invention, inorder to suspend the ,printing operation of .both impression cylinders, there need be employed but one tripping key. This key positions :the means that enables the tripping mechanism pertaining to the firstcylinder to operate, the ,means for tripping the second cylinder being positioned automatically by @the position of the first cylinder relative to the printing and non-printing positions thereof.

iWith a view to the attainment of ,these ends and the accomplishment of certain otherobj ects which will hereinafter appear, the invention consists in the features of novielty in the construction, combination and arrangement of parts, which will, .now be 'decribed with reference to the accompanying d awings, and then more particularly pointed but in the claims.

In the said drawings, Figures 1 and 2 are side elevations, partly in section, showing respectively, opposite sides of a portion of printingrelation. Ei .isa .verticalcross' section taken on the line 5-5.of FigrG; and Figs. 6 and .7 are side elevations similar to Figs. 11 and E2, showingparts in the positions .theyoccupyat the timethatthe hook 30 of:

the cylinder elevating-and lmvering.lnecha- :nism of cylinder 4: has moved a short distance onits downward ln'lovement. Fig. 8 1s a partial vertlcal cross sect1on taken at l the right end of Fig. 6 in the same elevation as Fig. 5, parts of the mechanism being omitted to show other parts more clearly. Infcylinder .printingpresses, where the cylinder undergoes a to and fro or arising and falling motion with reference to the "form bed, the cylinderraisingand lowering mechparting rotary anism usually embodies a spring for moving the cylinder in one direction, and positive means, such as an eccentric or toggle, for moving it in the other direction, and the spring is usually employed and is preferably employed in this instance for producing the upward movement. One or more springs, as shown at 1, 2, are used for each of the cylinders 3, 4, whos journals 5 are supported in boxes 6 arranged in suitable guides 7, respectively. These cylinders are here shown as impression cylinders, but to which the invention is not to be limited. These cylinders constitute members of printing couples whose complemental members 3 4 are here illustrated as letter forms, but to which the invention is not to be limited.

Between the impression cylinders 3, 4, is arranged the transferring cylinder 8, which serves to transfer the sheet from the first cylinder 3 to the second cylinder 4, in a way which will result in the second cylinder producing an impression upon the same side of the sheet as that upon which the first cylinder produced its impression. The transferring cylinder is driven by a gear 9, and has a smaller gear 10 meshing with gears 11, 12 on the cylinders for immotion to the latter. Gear 9 is driven by gear 13 on shaft 14. The shaft 14 drives cam 15, which actuates the cylinder lowering mechanism of the first cylinder, through the intermcdiation of an idler 16 and pinion 17 while the gear 13 drives cam 18 of the cylinder lowering mechanism of the second cylinder, through the intermcdiation of idler 19, pinion 20, idler 21 and pinion 22, the peripheries of cams 15, 18, being provided with gear teeth for engagement with idler 16 and pinion 22,

respectively. The arrangement of teeth inthe several gears which drive cams 15, 18 is such that the two cams move together and perform their functions in succession, each making one complete revolution for each sheet printed.

The cylinder lowering and tripping mechanisms for the two cylinders are very si1nilar in construction and operation, the differences consisting, mainly, in the means whereby the tripping of the second cylinder is deferred after the operating key is released until the sheet which was printed by the first cylinder passes and receives an impression from the second cylinder. Because of the similarity of the lowering and tripping mechanisms of the two cylinders, in describing these mechanisms, the same letters of reference will. be employed where corresponding parts are identical, and it will be understood that the description applies equally to the mechanism of each of the cylinders.

Above the boxes 6 of the cylinders 34 are arranged eccentrics 23 resting in bearing blocks 24 and serving to lower the cylinders into compression or printing positions when said eccentrics are rotated in their bearing blocks, and this may be done through the agency of crank arms 25 and connecting rods 26 whose lower ends are pivoted to crank arms 27 rigidly secured to rocker shafts 28. It will be understood that one of the crank arms 27 is secured to each end of each rocker-shaft 28 (see Fig. 5) and that when a shaft 28 is rocked these arms through the medium of their respective connecting rods communicate motion to both. ends of the journals or shafts 5 of the cylinders 34, respectively.

Mounted securely upon each of the rocker shafts 28 is a tooth 29 adapted to be engaged by a hook 30 having a notch 31 formed at or near its lower or free end and arranged to drop over and engage the tooth 29 while the other end of the hook is pivoted to the free end of a crank arm 32 loosely journaled or pivoted upon the shaft 28 so as to be capable of independent oscillation. The pin or stop 33 limits the upward movement of the tooth 29, this stop being fixedly carried on the frame of the press. 9

The necessary oscillatory motion ofthe arms 32 and hooks 30 which, through the medium of the teeth 29, give the required rocking movement of the shaft 28, is produced by the cams 15, 18 each of which is provided in one face. with a cam groove comprising a concentric or dwelling portion 34 and deflecting or active portions 35, 36. Each crank arm 32 is provided with a pin or anti-friction roller 37 adapted to engage into the groove of its corresponding cam so that when the cams are rotated in the direction of the arrows the arms 32 will be oscillated and, through the medium of the hook 30 and tooth 29, the shaft 28 be rocked for the purpose previously described.

On one face of each of the books 30 is a lug or pin 38, projecting laterally therefrom into a groove 39 formed in the contiguous face of the cam arms 40 and 40 whose lower end is secured to rods 41, 41 The groove of each cam arm is, for the major portion of its length, concentric with its .corre sponding shaft 28, so that the lugs 38 ride idly to and fro in the grooves of their cor responding cams except when cam arms 40 and 40 are oscillated upwardly, as shown in Fig. 2 and Fig. 7, and, in the event, when lug 38 arrives about at the limit of the up-. per end of its groove 39, it engages a cam portion 42 formed within the groove thereby lifting the said lug and its hook 30 out of lock with its tooth 29 and permitting the hook to be moved downwardly by the arm 32 on the next stroke ofthe arm (as shown in Fig. 4) without carrying with it the tooth 29. When hook 30 is thus disengaged from its tooth 29 its corresponding cylin- -2)"for the purpose hereinbefore described.

der 3 or 4: will be tripped and held in its elevated position out of printing position by the springs l2, While the arms 32 and hook 30 may continue their rocking movements, and this tripped condition will exist until the notch 31 again returns to the position.

Referring now particularly to thecylinder lowering devices of cylinder 3, of which, in Fig. 2, the hook 30 is shown in its upper or retracted position and elevated out of non-cylinder lowering engagement with tooth 29, and assuming that the hook 30 is in the lower position; as the cam 15 is rotating in the direction of the arrow, the hook 30 will be swung to the lower position shown in Fig. 4, while the roller 37 is passing through the portion 35 of the cam groove and will be held in such lowered position while the concentric or dwelling portion 34: of the cam is passing the roller 37. While thisconcentric portion 34 is passing, the cylinder is at the limit of its downward movement and the impression is taking place. When the portion 36 of the groove arrives at the roller the hook 330 begins to rise, and when the roller arrives at about midway in the groove 36 the grippers 59 have arrived at about the position 59 shown in Fig. 1, and the sheet will betransferred to the transfer cylinder at the time when the cylinder 3 is in its midway position of its rising movement, and continues to rise until the portion 35 of the cam groove again arrives at the roller. The actionofcam 18 of the cylinder lowering devices of cylinder 1 is the same as that of cam 15 last described, except that the active portion 35 is divided into lower and upper parts 35 35 with a concentric or dwelling portion 35 to be hereinafter more particularly referred to, separating the two active parts 35 35 Having now described the portions of the cylinder lowering and tripping mechanisms which are similar in their respective operations, I will now describe the actuating means by which the tripping devices are put into operation. On the rod 41 of the tripping devices for the first cylinder .is secured a lever 43 provided with an operating key 14 arranged in a position accessible to the press attendant, and adapted, when depressed, to rock the rod 41 and cam arm 40. and to move the upper end of the arm 10 upwardly with respect to the lug 38 (Fig.

On the rod 41 of the tripping devices for cylinder 4 is loosely placed a lever 45 car- .rying at its free end a stud 4-6 whose outer end is provided with an anti-friction roller 47 adapted to be engaged by the cam ar ranged to turn with the cams 1518 and which is preferably fixedly mounted upon a -shaft 49 upon which the cam 15 is also fixedly mounted.

An arm a is fixed at one end upon shaft 41 and carries a Stud 5 at its other end upon which the "hook lever c is mounted to turn. The lever 45 carries a stud roller or pin ethatengages the hook (Z provided upon the lower end of the hook lever c. As "the cami 50 is in constant rotation it will intermittently depressthe roller 4-7 upon the lever 15 against the force of the spring 61 whereby the lever 45 is correspondingly depressed against the force of the spring 61 that serves to return the lever 15 to its upper position when the cam 50 permits. While the hook cl is engaged with the stud roller or pin 0 the hook lever c is bodily moved downwardly each time the lever 4155s moved downwardly by the cam 50 and the hook leverc, 1n movlng downwardly, forces the arm a to be lowered owing to 1ts connection with such arm at Z). The arm a is lowered against. the force of spring 7 which maintains the hook d at the pin 6 when the lever 45 rises. When the arm a is lowered the shaft 11 is turned in a counter-clockwise direction, as viewedin Fig. 7 which is taken from the other side of the machine from that in which Fig. 1 is taken, with the result that the cam arm 10 is raised to bring the cam portion 1-2 into the path of the lug 38 carried by the arm 30. This lug is thereforeraised to raise the arm 30 to its tripping position to prevent cylinder 4: from coming to its printing or impression position for the purpose hereinafter to be set forth. When the lever 45 is in its uppermost position working clearance intervenes between the hook d and the pin 6 to permit this hook to swing to the left (Fig. 1). This result *I achieve by providing the arm a with a stop finger a that engages a stop a when the lever 45 has nearly reached its upper position, this lever 45 continuing to 'move upwardly sufficiently after the finger a hasengaged the stop a to provide the desired clearance between the hook d and the roller (2. The trifurcated lever g is mounted to rotate upon the stud 7t fixed to the frame of the press. One arm of the lever g carries a pin 2' that is interposed between theadjacent cylinder box (3 andthe base of the guide-way opening in which the box moves.

preferably flexible. The lower end of this rod is normally adjacent the pin Z carried upon the hook lever c. The third arm of Another arm of the lever g carries a rod is that is ating engagement with the pin Z until the impression cylinder 3 is partially returned to its printing position whereby the hook d is maintained beneath the pin 6 until the impression cylinder has partially returned to its printing position. The hook lever 0 has a weighted arm 0 to cause this lever to move in-a coumer-clockwise direction (Fig. 1) when permitted so to do. During the downward progress of the cylinder box 6 the pin 2' is depressed and the lower end of the rod is brought into engagement with the pin Z at a time when working clearance intervenes between the hook (Z and the pin 6 with the result that the lever c is swung to the position illustrated in Fig. 3. The hook lever c and lever 4-5 are thus uncoupled so that the cam 50 will have no influence upon the shaft 4C1 that pertains to the tripping mechanism of impression cylinder 4c whereby the cylinder 4; is allowed to continue printing so long as the cylinder 3 is printing.

When the cylinders 3, 4: are to be tripped it is necessary, after the cylinder 3 is tripped, that sufficient time elapse before the cylinder 4: is tripped for the sheet last printed by cylinder 3 to pass from cylinder 3 and to be received therefrom and to pass one and one-half times around the transfer cylinder 8 and thence to pass to cylinder 4t to be printed thereby. The cylinder 3 may be tripped at the desired time by first press ing the key as at or about the time that the parts are in the position shown in Figs. 1

and 2 when the cylinder 3 is in its raised position, and when the tooth 29 of the cylinder elevating and lowering mechanism of cylinder 3 is in its upper postion, as in Fig. 2, and, at this time the grippers 59 of cylinder 3 are in the position shown in Fig. 1, ready to receive a sheet from the feed board 60 although, if the press is to be tripped, it is not usual to supply a sheet to the grippers 59 at this turn of the cylinder. The

depressing of the key 44 causes the cam arm 40 of the tripping devices of cylinder 3 to be oscillated upward and thereby force its cam portion 42 against the lug 38 on hook 30 to lift the hook out of lock with the tooth 29, as in Fig. 2, to allow cylinder 3 to re main in its non-printing position. the key it is released after the cylinder 3 has been tripped and allowed to remain in its nonprinting position, the spring 58 will raise the arm 43 and turn shaft 41 to lower the cam arm a0 and allow the hook 30 to fall into engagement with the tooth 29 whereby the tripping mechanism pertaining to cylinder 3 is restored to non-tripping condition and the cylinder 3 is permitted to be brought into printing relation.

Following the course of a sheet through the press the grippers 59 are on the point of closing upon their stops and before this happens a sheet has been fed from the board When 60 in a position to be engaged between the grippers 59 and their stops. The impression cylinder 3 rotates in a counter-clockwise direction (Fig. 1) and when the forward edge of the sheet has nearly reached the vertical line that includes the center of the shaft 5 of the cylinder 3 said cylinder is brought into full printing relation, continued rotation of this cylinder causing the sheet to be printed upon. After the rear edge ofthe sheet has passed the aforesaid vertical line the impression cylinder 3 is brought out of its printing position. When said cylinder is midway between its printing and non-printing positions the grippers 59 are in the position indicated by the dotted lines 59 (Fig. 1) and the rippers 63 oft-he transfer cylinder are in the position illustrated by the dotted lines 63 When these grippers reach the line joining the centers of cylinders 3 and 8 the sheet is transferred from the cylinder 3 to the transfer cylinder 8, the transfer cylinder turning about one and one-half revolutlons before transferring the sheet to the grippers 62 upon cylinder 4:.

This latter transfer is made when the grip pers 62 and 63 reach the line joining the centers of cylinders S and a. The impres sion cylinder rotates in a counter-clockwise direction (Fig. l) and when the forward edge of the sheet has nearly reached the vertical line that includes the center of the shaft 5 of the cylinder 4t said cylinder is brought into full printing relation, continued rotation of this cylinder causing the sheet to be printed upon. After the rear edge of the sheet has passed the latter vertical line the impression cylinder 4C is started from its printing position, the movement of the cylinder t out of its printing position being effected during the time that the grippers 62 reach the position illustrated in Fig. 6, at which time the sheet is fully disengaged and the cylinder 4 is raised to its highest position. After the cylinder 4- has reached the position illustrated in Fig. 6 it is lowered to a mid-position in time to take the sheet from cylinder 8 which is just shortly before the grippers 62, 63 have reached the position illustrated in Fig.

After the printing cylinder 3 has been fully raised from its printing position it may be tripped to prevent it f1 om being lowered into printing position, in order that the sheet taken by the grippers 59 may not be printed upon or in order that the impression cylinder may not be printed upon if no sheet has been fed to said grippers. Prior to the trip ping of the cylinder 3 the sheet previously printed, uponwith the aid of this cylinder should be allowed to continue its transit to be printed upon by the cylinder 4: so that during this interval the cylinder 4: should not have its orderly operation disturbed. The tripped cylinder 3, being in its upperrise most position, allows the spring m to retain the pm i in its uppermost position against the bottom of the associate cylinder box 6 whereby the rod 70 is prevented from operating upon the pin Z so that the hookcZ normally is allowed to remain in engageable position below the roller or pin 6 whereby the cam. 50, in lowering the lever 45, will also lower thehook lever cto turn the rod ll 'to lift the cam arm 4:0 to raise its cam element 42 whereby the lug 38 lifts the hook 30 from the tooth 29 to trip the cylinder 4: when this cylinder i in its uppermost position, as in Fig. 6. The impression cylinder 4 thus remains in printing position until it has completed the printing operation upon which it was engaged and is returned to its non-printing position in which itis'retained until cylinder .3 is returned to printing position. Both impression cylinders are placed in {their non-printing positions by the springs or cylinder liftingmeans 1-2 pertaining thereto and the force of these springs has to be overcome by the eccentric mechanism 23 and the cam mechanism that controls thi eccentric mechanism. [The socalled tripping is accomplished by omitting the operation of the eccentric mechanism which omission is effected by the disengagement of the hooks 30 upon the tooth 29. The first cylinder 3 is tripped by the attendants depression of the key 44 causing the hook 80 pertaining to cylinder Sto belifted from engagement with the associate tooth 29. The cylinder l, 'beingin its uppermost nonprinting positionyremains in this position because of the inactivity of the rod is and the lever g carrying it during the time the cylinder 3 is in its non-printing position, it following that cylinder l remain in its non-printingposition when cylinder 3 is in non-printing position since the cam Will then depress the lever 45 to lowerthehook lever c that depresses the arm a to turn the shaft 41 to lift cam arm. lO to separate the associate hook 30 from the associate tooth 29. The means" (lever 45, hook lever (1, etc for operating the tripping mechanisin that pertains topthe second impression cylinder 4 is inherently capable of performing this function and does not have to beset or positioned to enable it to perform this function. In the normal printing operation of the press thefunction of this means must be omitted or prevented on which account the couple effected .at parts (Z and e of.- the coupling mechanism is broken Whenever the first cylinder3 is broughtinto printing position and when this couple is broken the cams 15 and 18 are permitted to perform their functions in orderly sequence as set forth in my aforesaid Patent 1,081,320. In other words the tripping iechanism pertainingrto the second cylinder l is normally positioned to trip allow the second impression cylinder to remain in its nonprinting position. Each time the first impression cylinder is lowered the means that render the tripping mechanism of the second impression cylinder effective are rendered ineffective owingto the breaking of the couple (Z, 0 so that the cam 18 pertaining to the second impression cylinder may perform its normal function of lowering this cylinder to printing position whenever the first impression cylinder 3 is lowered to printing position.

The mechanism for breaking the couple (I, e is the mechanism that brings the cylinder 3 to printing position. This mechanism performs its function by breaking such couple through the intermediation of the box 6 of-the cylinder 3 but I do not wish to be limited to the-employment of this box 6 or any art of thecylinder 3 for breaking said coup e.

When it is desired to have impression cylin der 4: print upon a sheet and to have the cylinder 3 omit its printingoperation upon this sheet, key 44: is depressed to maintain the impression cylinder 3 in a tripped or non printing position and the foot of the attendant is pressed upon the arm g of lever to operate the impression cylinder 3 alone so as to print but one impression on the sheet passing through the press the gripping handle 71 is pulled upwardly to the position indicated by dotted lines in Fig. 3. This handle is connected with the upper end of a rod 0 whose lower end is connected with the lower end of therod 71:. When the handle is in its lowermost position the rod 0 does not interfere with the functioning of the rod previously set forth but whens-aid handle is pulled upwardly the rod 0 pulls the lower end of the rod is to one side as indicated by dotted lines in Fig. 3and if the hook is in its withdrawn position as indicated in Fig. 3 the weighted lever 0 will swing the hook beneath the pin 6. As a 0011- sequence-of this adjustment the couple d, e is maintained to continue cooperative rela tion between the cam 50 and the shaft a1 whereby the impression cylinder at is tripped to allow the sheet discharged from the cylinder 3 to pass from the press. without being printed upon by the cylinder 4:. If it is desired to continue the printing operation of the cylinder 3 alone for a successive number of impressions the latch 79, that is pivoted upon the baseof the handle 01., is turned into engagement with a stud 9 that is carried by the frame of the press and passes through the slot in the handle.

While I have herein shown and .particularly describedthe preferred embodiment of my invention I do not wish to be limited to the precise details of construction shown as changes may readily be made without do:

. g tobreak the couple (Z, 6. If it is desired parting from the spirit of my invention, but having thus described my invention I claim as new and desire to secure by Letters Patent the following 1. A printing press including a pair of printing couples, each printing couple ineluding a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one 01"- said couples, press driven means .for rendering said tripping mechanism effective, a couple member included in said press driven means adapted to be moved to render said press driven means ineffective, means having operative connection with the movable elen'ient of the other couple and said couple member nd adapted to move said couple member to render said press driven means ineffective when said movable element of said other printing couple is moved. to printing position, and tripping mechanism controlling the movable clement of said other couple.

2. A. printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven element, connecting elements establishin an operative relation between said press driven element and said tripping mechanism, a couple member included in said cormecting elements adapted to be moved to break said operative relation, means having operative relation bet veen said couple member and the movable element of said other couple and adapted to move said couple member to break said operative relation when said movable member of said other couple is moved into printing position, and tripping mechanism controlling the movable element of said other couple.

3. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven element, a lever actuated by said press driven element, a couple member adapted to establish operative relation between said le ver and said tripping mechanismand adapted to be moved to break the same, means having operative relation between the movable element of the other printing couple and adapted to move said couple member to break said operative relation when said movable element is in printing position and a second tripping mechanism. controlling the movable element of said other couple.

4. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position,

tripping mechanism controlling the movable element of one oi said couples, a press driven element, a journaled rod controlling said trip mechanism, a lever journaled thereon and actuatively engaging said press driven element, a second lever secured to said rod, a couple member movably mounted on one of said levers and adapted to engage the other to establish operative connection there between, means having operable connection with said movable element of said other printing couple and said couple member and adapted to move said couple member to break said operative connection When said last mentioned movable element is in printing position, and a second tripping mechanism controlling the movable member of said other couple.

5. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven cam, an oscillating lever in engagement therewith, a lever controlling said tripping mechanism and adapted to assume an untripping position, a couple member movably mounted on one of said levers and adapted to engage the other of said levers to establish an operable connection therebetvveen, means having operable connection with said couple member and the movable element of the other printing couple and adapted. to break said operative connection when said last mentioned movable element is in printing position, and a second tripping mechanism controlling the movable member 0 said other couple.

6. A printing press including a pair of printing couples, each printing couple in cluding a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, press driven means for renderingsaid tripping mechanism effective, a couple member included in said press driven. means adapted to be moved to render said press driven means inefl'cctive, a connecting member abutting the mov able element ofsaid other printing couple and engaging said couple member and adapted to move said couple member to render said press driven means ineffective when said movable element of said other printing couple is moved to printing position, vicldable means tor retaining said connecting member in engagement with said movable element of said other couple, and a second tripping mechanism controlling the movable member of said other couple.

7. A printing press including a pair of printing couples, each printing couple ineluding a movable element adapted to be soved into and out of printing position,

tripping mechanism controlling the movable element of one of said couples, a press driven element, connecting elements establishing an operative relation between said press driven element and said tripping mechanism, a couple member included in said connecting elements adapted to be moved to break said operative relation, a connecting member abutting the movable element of said other printing couple and engaging said couple member and adapted to move said couple member to render said press driven means ineffective When said movable element of said other printing co.u ple is moved to printing means for retainingsaid connecting member in engagement with said movable element of said other couple, and a second tripping mechanism controllingthe movable element of said other couple.

8. A printing press including a, pair of printing couples, each printing couple including movable element adapted to be moved into and out of printing position,

tripping mechanism controlling the movable element of one of said couples, a press driven element, a lever actuated by said i press driven element, a couple member adapted to establish operative relation be tween said lever and said tripping mechanismand adapted to be moved to break the same, press driven means for rendering said tripping mechanism effective, a couple member included in said press driven means adapted. to be moved to render said press driven means ineflective, a connecting men-r ber abutting the movable element of said other printing couple, and engaging said couple member and adapted to move said couple member toprender said press driven means ineffective when said movable element of said other printing couple is moved to printing position, yieldable means for re taining said connecting member in engagement With said movable element of said nism controlling said other couple.

9. A printing press inch-iding a pair of printing couples, each printing couple including a n' ovab-le element adapted to be moved into and out of printing position, tripping mechanism, controlling the mov able element of one of said couples, a press driven means for rendering said tripping mechanism effective, a couple member in eluded in. said press driven means adapted to be moved to render said press driven means ineffective, a connecting member other couple, and a secondtripping mechaabutting the movable element of said other printing couple and engaging said couple member and adapted to move said couple 'member to render said press driven means ineffective when idmovable element of said other printing couple is moved to printposition, yiel dable the movable member of ing position, yieldable means for retaining said connecting member in engagement with said movable element of said other couple, and a second tripping mechanism controlling the movable element of said other couple.

10., A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven cam, an oscillating lever in engage ment therewith, a lever controlling said tripping mechanism and adapted to assume an untripping position, a couple member mo-vably mounted on one of said levers and adapted to engage the other of said levers to establish an operable connection thcrebetween, a connecting member abutting the movable element of said other printing couple and engaging said couple member and adapted to move said couple member to render said press driven means inelfective when said movable element of said other printing couple is moved to printing position, vieldable means for retaining said connecting member in engagement with said movable element of said other couple and a second tripping mechanism controlling the movable element of said other couple.

11. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, press driven means for rendering said tripping mechanism etfective, a couple member included in said press driven means adapted to be moved to render said press driven means in effective, a resilient connecting member enga said movable element of said other printing couple and abutting said couple member and adapted to move said couple member to ren-,

der said. press driven means ineffective when. said movable element of said other printing couple is moved to printing position,1nea-ns for retracting said connecting member from engagement With said couple member, and a second tripping mechanism controlling the movable element of said other couple.

12. A printing press ii'icluding a pair of printing couples, each printing couple, including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven element, connecting elements establishing an operative relation between said press driven element and said tripping mechanism, a conple member included in said connecting elements adapted to be moved .to break said operative relation, a resilient connecting member engaging said movable element of said other printing couple and abutting said couple member and adapted to move said couple member to render said press driven means ineffective when said movable element of said other printing couple is moved to printing position, means for retracting said connecting member from engagement with said couple member, and a second tripping mechanism controlling the movable element of said other couple.

13. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven element, a lever actuated by said press driven element, a couple member adapted to establish operative relation between said lever and said tripping mechanism and adapted to be moved to break the same, a resilient connecting member engaging said movable element of said other printing couple and abutting said couple member and adapted to move said couple member to render said press driven means inefi'ective when said movable element of said other printing couple is moved to printing position, means for retracting said connecting member from ongagement with said couple member, and a second tripping mechanism controlling the movable element of said other couple.

lt. A printing press including a pair oi printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven element, a journaled rod controlling said tripping mechanism, a lever journaled thereon and actuatively engaging said press driven element, a second lever secured to said rod, a couple member movably mounted on one of said levers and adapted to engage the other to establish operative connection therebetween, a resilient member engaging said movable element of said other printing couple and abutting said couple member, and adapted to move said couple member to render said press driven means ineii'ective when said movable element of said other printing couple is moved to printing position, means for retracting said connecting member from engagement with said couple member, and a second tripping mechanism controlling the movable element of said other couple.

15. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven cam, an oscillating lever in engagement therewith, a lever controlling said tripping mechanism and adapted to assume an untripping position, a couple member movably mounted on one of said levers and adapted to engage the other of said levers to estab lish an operable connection therebetween, a resilient connecting member engaging said movable element'of said other printing couple and abutting said couple member and adapted to move said couple member to render said press driven means inefiective when said movable element of said other printing couple is moved to printing position, means for retracting said connecting member from engagement with said couple member, and a second tripping mechanism controlling the movable element of said other couple.

16. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, press driven means for rendering said tripping mechanism efi'ective, a couple member included in said press driven means adapted to be moved to render said press driven meansineifective, a connecting member abutting the movable element of said other couple and said couple member and adapted to move said couple member to render said press driven means ineffective when said movable element of said other printing couple is moved to print- 7 moved into and out of printing position,

tripping mechanism controlling the movable element of one of said couples, a press driven element, connecting elements establishing an operative relatlon between said press driven element and said tripping mechanism, a couple member included in said connecting elements adapted to be moved to break said operative relation, a connecting member abuttting the movable element of said other couple and said couple member and adapted to move said couple member to render said press driven means inelfective when said movable element of said other printing couple is moved to printing position, yicldable means. for retaining said connecting member in engagement with said movable element of said other couple, means for retracting said connecting member from engagement with said couple member, means for retracting said connecting member from engagement with said movable element, and a second tripping mechanism controlling said movable member of said other printing couple.

18. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven element, a lever actuated by said press driven element, a couple member adapted to establish operative relation between said lever and said tripping mechanism and adapted to be moved to break the same, a connecting member abutting the movable element of said other couple and said couple 19. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven element, a journaled rod controlling said tripping mechanism, a lever journaled thereon and actuatively engaging said press driven element, a second lever secured to said rod, a couple member movably mounted 011 one of said levers and adapted to engage the other to establish operative connection therebetween, a connecting member abutting the movable element of said other couple member and adapted to move said couple member to render said press driven means ineffective when said movable element of said other printing couple is moved to printing position, yieldable means for retaining said connecting member in engagement with said movable element of said other couple, means for retracting said connecting member from engagement with said couple member, means for retracting said connecting member from engagement with said movable element, and a second tripping mechanismcontrolling said movable member of said other printing couple.

20. A printing press including a pair of printing couples, each printing couple including a movable element adapted to be moved into and out of printing position, tripping mechanism controlling the movable element of one of said couples, a press driven cam, an oscillating lever in engagement therewith, a lever controlling said tripping meohanism and adapted to assume an untripping position, a couple member movably mounted on one of said levers and adapted to engage the other of said levers to establish an operable connection there between, a connecting member abutting the movable element of said other couple and said couple member and adapted to move said couple member to render said press driven means ineifective when said movable element of said other printing couple is moved to printing position, yieldable means for retaining said connecting member in engagement with said movable element of said other couple, means for retracting said connecting member from engagement with said couple member, means for retracting said connecting member from engagement with said movable element, and a second tripping mechanism controlling said movable mem ber of said other printing couple.

In witness whereof, I hereunto subscribe my name this third day of February A. D.,

ROBERT MIEHLE.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0.

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