US975294A - Multicouple multirevolution printing-machine. - Google Patents

Description

' W. SCUTT, DECD. 1, a n; J. soon, anemona. HULTIUUPLH MULTIBEVLUTION PRINTING MACHINE. I arruouml nun 11110.30. 1905.

Patqnted Nov. 8, 1910.,

2 SHEETS*BHEET 1.

W. SCOTT, DEGD.

I. D. J. SCOTT, EXBOUTOBB. MULTIGOUPLB MULTIBEYOLUTION PRINTING MACHINE.

1910. n sums-summa.,

Pltented Nov. 8,

APYLIUlHOl FILED DBU. 30, 1905.

. sheet'or sheets which havealre'ady been'properly printed bythe first printing couplel and ing couple, the impressionvwnber of -which sequentially on the severa UNITED STATES rATEnT oEEIcE.

wsLri-:a soor'r, or PLA'I'NFIELD, 4NEW JEasEY; IsAEELLA scorer AND navrn Joan scor'r ExEoU'rons or samwaLrEa sco'rr,l DEoEAsED.

MULTICOUPLE MULTIBEVOLUTION PRINTING-MACHINE.

Specification of Letters Patent.

Patented Nov. 8,1910.

Appnuamn mea beamte; aoi'sos. semi No. 293,384.

To all whom it may concern: Be it known that I, WALTER Soo'rr, a citiz'en of the Unite-d States of America, and a resident. of Plainfield, Union county, New Jersey, have invented ."'crtain new anduse'- fulhI-inprovements in Multicou leMultirevolution Printing-Machines,o f lvhich the following isl''specification`- The pr'ehhiit''inventioii t ates generally to rinti mhines, and, "as'."more particuarly re er'ence to the arrangement and con*V struction of 4the parts of a'in lti.couple, multi-revolution machinefand v o tripping mechanism connected therewith.` l

In Soe of my rior ap lications, such as the on iled'ontie 17th ayof-ovember, 1905, r. No. 287863,.a construction was disclosedembracing a oftl e sheet,"in combination with means for automatically and periodically, at regiilar intervals, tri ping and untripping 'the 11npressionA of t e vmembers composing the several couples,toge ther with means, .under lthe control of ythe operator, or of an automatic bers of all .the couplesin regular sequence, and whereby, when the said actuating device is released, the machine will resume its nor; mal operation, andbe tripped and unti'ipped again iit'maticallyl' The above arrangement, whereby the interru )ting means act ieouple's, is .def sirable, in order to avoid the spoiling of the 1n order that 1tmay be properly acted 'upon bythe remaining printing couples.

The present invention 'embraces a printis provnled with grippers @pted to hold the sheet' for more than one revolution, inA

ing and'untripping the impression at reguarV-i'ntervals' toprop'erly print the sheet, to-

gether with means for interruptingthe action of, the automaticmeans aforesaid,

whereby the members composin the print# normal .operation of the grippers, who b'y the. sheet is held-"entire impression me' ber pluralit printing coupies adapted to prlnt on t e same. side as long as the members are maintained in their tripped position.

hen several couples are used, the invention,I will comprise a combination with the form and impression members of two adjacent printing couples, of automatic means foi` tripping and untripping the impression of the several 'couples at regular intervals, the said impression members havingu'g'ri pers,'together with means :for operating t e rippers on the impression 'memherothe rst prlnting couple to release the sheet once to a number of revolutions, means for openin g the grip ers o n the im ression member of the secon printing coup e 'once to a number of revolutions to release the sheet, means for interrupting the action of the automatic means acting simultaneously on the members of vthe several couples to maintain .themin their.tripped position, 'and' means, acting simultaneously therewith, to interrupt the normal action'4 of the grippers on the, impression member of the second couple, whereby the sheet is held on the impression 4member ofthe second couple aslong as the impression is tripped.

' Other 'ob'ec'ts and featur'es of construction will appear as. the specification proceeds.

The invention is embodied in a concrete and preferred construction in the accom' anying drawings; it is, however, suscepti le 'of avide mo `ication, -without departing from ,the 4true s irit of the invention.

'.Imthe saidv raw'ings: Figure-1 is aside elevation of. so much of' a printing machine asfis necessary to properly illustrate the invention, showingV the members 'adjacent to the impression member of the second rintin'g-co'uple in the proper position todgliver the sheet-r4 Fig.A 2 is-.an end-view'looking ,in the direction ofthe arrow 2 of Fi 1 wit parts broken away.

memberof .the second printing coup *showing them in the position which they ccnpy when the said impression member is about, to receive a sheet.. Fig. .4 is aview similar to Figs, but 'showin the effect of the interrupting means ony e members adacent. lto the impression member lof the second jp'rintin cou 'le. 'i y Simi ar"ciaracterof reference indicate corresponding 'parts in the severl views;

indicates 'a framework of iiy suitable sel i lig. 3. is a detailviewof the. members adjacent to the im ression parts comprising the machine. In this framework are mounted a lurality of print-V ing couples, preferably of) a rotary nature, there being in the present instance two such' couples arranged substantially one above the other. It"wil-l be understood, however, that the present invention may be extended to include three or more printing couples, if desired. Each couple consists of a form and impression member, and is adapted to make a number of revolutions to.each. impression. In the present instance the cylinders revolve twice to each impression.

2 is the impression cylinder, and 3 the form cylinder of the rst printing couple, While 4 is the impression cylinder andy-5 the form cylinder of the second printing couple, A transfer cylinder G is interposed between the two impression cylinders, and a second transfer cylinder 7 is located adjacent to the second impression cylinder. This cylinder 7 may be a collecting cylinder, if desired.

8 isV the feed board, adjacent to which are thegages 9, against which the sheets are fed, which are raised in a well'known manner when .the grippers on the cylinder 2 seize the sheet. I

10 indicates inking mechanism Aoii' an suitable construction usedin connection'wit each plate cylinder.

All of the cylinders are geared together,

being driven fromthe pinion 11, which latter also transmits its motion through theV intermediate gear 12 and pinion 13 to the 'gear 14 mounted on the camshaft 15. '1 -Theeylinder 2 is provided with grippersvl which are arranged to tumble backward and forward nearly one-half .a revolution by means of the cross-head 17, provided' lwith a slot in -the usual manner, and mounted'on the gripper shaft 18.

19 and 20 indicate two rotating cams which are driven so as to rotate once to a number of revolutions of the impression cylinder'by means of the pinion21 and the gear'22.,

Mounted on the stud 23 .inithe framework,

is an arm 2,4 havinga friction roll`-which is held in constant engagement with vthe cam 19 by means of the spring'25; {.This stud 23 carries a second arm -having a rpin 2 6 which i projects at the beginning'of every `other revolution in the plane-'of the'crss-head 17 ofthe gripper-.shaftso as to-c'lose thesaid grippers and seize the sheet.

Pivoted .in the framework and adjacent to theunderside ofthe-cylinder 2 is a lever vor Leo arm 27 adapted to rock'a round `the center 28 as1 a pivot,- andtprovided at vitscuterend with the frictionV roll 29 which is'. designed "to move into the plane of the cross-head '-17 once to every two 'revolutions' in alternation with the movements of the pin 26. This l e tion roll 55 whi li engages with the said caii'i 130 ver 27 is operated "from the cam. 2.0 'means l closed twice during the same revolution by means of the two rocking cams 36 and 37, mounted on the arms 38 and 39, which are pivofed at 40 and 41 in the framework. A t

theouter end of thearms 38 and 39 are the friction rolls 42 and 43, which, in the present instance, both engage with the earn 44, so

'shaped and timed as to move the rockin cams 3G and 37 intoand out ofthe plane o the grippers on the c nate revolutions.

` The. second impression cylinder preferably does not deliver its vs'heetto the transfer cylinder 7 but delivers it to suitable guides 45'interposed between the .said impression and transfer cylinders, so 'that the sheet may be carried on to be'deliveredwith its printed4 side up. From theftransfer or collecting vlinder during alterinder 7 the sheet may be delivered in any4 suitable way, as by means of a drop delivery or' otherwise. The said-second impression cylinder .is provided- With spring-seated grippers46 of the usual and ordinary construction, having a crank with friction i'oll 47 adapted to'comein Contact with a suit-- able cani for opening the said gri pers.v inasmuch as the delivery point of this cylinder is but a short distance away from the receiving point'or from the' axial line between the transfer .cylinder 6 and theiinpression cylinder 4, only one cam is necessary in thisl instance'to open the gripper mechanism both to yreceive and release' the,-

Sheet. This cam, which is designated by4 the numeral 48, is adapted to open the gri 'per mechanism during the irst'revolutionl o the cylinder-to receive the sheet, and again .to

open the gripper mechanism during its 'secg' ond revolution, to deliver the sheet, the'saidYY l 115.

cani being moved into d-i'erent positionsy 'to effect this operation. "Preferably 'this cam vis caused to oscillate around the shaft of the cylinder'b'y being provided with the sleeve 49, which, at' its outer end, is providedwith the gear segment 50 adapted to be operated by'ajny suitable means to shift the caniback .J'andfcrtha certain distance or to properly position the said cani Awith reference to the `receiving or the delivery point, as the case 'may be.

51- is arotating camwhichimpartsproper motion 'to the gear-seetorv52, ivoted at- '53,

ra'o' and provided with an arm '54 aving a fr'e. I'

y pab -3.0 pression at predetermined intervals.

i .trip the impression is (mly about one-eighth of an inch, so that the gears on theres tive y '15 cylinders need not be out of mesh wit each er'. other. This tripping of the impression cyli' inders 'does not affect their relation to the transfer" cylinder 6 to any appreciable exi tent and the sheet 'is therefore always ca-y le of beingpassed from the first. to the.v

' second impression cylinder whether lor not the impression is ti1pped., Thev said eccentric bushings 57 are connected by 'means of the lshortarms 58, connecting rods 59, and

it laver. 60 to the rockshaft 61, therebeing 1n the present instance one rockshaftfor both cylinders. Suitable means are provided for rocking this rockshaft 4at regular intervals so .as to automatically trip and untrip the im` In the vpresent instance, the impression is tripped uring the vsecond revolution of eachcyc e of the machine; Obviously, the means for accom lishngfthis may be varied widely, but

pre erably :thereis mounted upon the cam shaft 15 a cam 63 which is given one'revolution to a `number of revo utions (in the present instance to eve two revolutions) of the .machineg Mounte loosely on 'the' stud .40 .65 is an arm 66 provided with a roller 67v adapted to enga ein the cam groove ofthefiom-6 3. -Suitab e means are 'rovided' for 'Zoinmunicating the motion of t e arm 66 to the rockshaft, 61. In the present instance, 4:5these means' take the form of slotted con'-V 'fnection 68 connected, vby'nf'leans'of thelever 59H0 the rockshaft aforesaid, and receiving 'the motion of the arm aforesaid by means 'M -the pin 70 carried at the lower end of the .5o said arm and `adapted to lay in the slot-71 4ofthe connect-ion aforesai ,and to be locked y -with I the said connection when the pin 70 is in the 'recess 7 2 of the said slot...`

,'Interrupting means' are p'rovidd'for,lift-:r

.the slotted'connection s as/to cause the to play vidly in the slot. 71, whereby yform -nnd impressionfgmembers will be- "maintained separated or tripped as long as- I'the slotted connection is 'held in its elevated 5:60 position. In other words, an. interrupting 4means is provided for the'automatic tripping and untripping means. This interrupting means will ireferably take the',`

the`| pin .T6 extending in under the slotted connectionso that when the said` ro'cking cam 74 is moved into the plane of'the'cam l or pin 77'conven1entlv mounted on tl'e cam play idly in the slot 7'1. The .sai interrupt- .mg means may of course be operated from anysuitable actuating device undefl the iniiuence of an automatic feeder, or, as 1n the vpresent instance, .under the control of the I have here shown a conventlonal operator. treadle '79 which, when it is depressed, will, through suitable connections, move the member 801soyas to cause'the latter, by means of ,its bifurcated end v81 to move the rocking and sliding cam74 into the planeof the pin 77. This may of course be effected by various mechanical contrivances, but, in the present instance, there' is shown a rockshaft ,I

8'2 suitably connected to the foot treadle by means of the Arod-8 5 and lever 86. Mounted. on the second impression vcylinder, are suitable throw-off fingers 87 'havin a cranktarrying the roll 88 in the .nsua i Y manner. Mounted on vthe stud 89 is a throw- -oil .cam `iENlwhieh is adapted to be positioned so as to be mthe-plane of the roll 88 during the secondwwlution of the second impression cylin" er',and to be out of the plane of' the said roll 88 during the first revolution of the said cylinder.4 This throw-Nicam is operated synchronously with the tri ping and untrippmg of the impression, an is therefore conveniently operated from the rockshaft .61 by any suitable means such as the ,bell crank 91'connected Ato the arm 92 of the lthrow-oli' 'cam 'by means of the rod 93, and

'connected to the rockshaft 61. by means of the arm94 andlever 95. -The guides 'are mounted on the pivot 96 and are positioned s'nchronously or* simultaneously with the t row-olf cam to receive the sheet, and. are

which vis adapted to rest 'on the surface of the cylinder. A A

' 101 is a stop for preventing the position- ,ing of the cam 48 to release the sheet when the impression remains trip ed. This stop 1 01 is 'pivoted'at-102 and is-a so conveniently voperated from the rockshaft 61 by' means of t e bent projection-\103 connec'ted to the lever 69 and connected at its other end tothe Alower end of the stop 101. f suitable means I-or projection 104 is provi A ed onthe sleeve '-49 .which is adapted to abut against .the said i. lowin form: A roc ing cam 74 isqmonnted fue slidab y ooit-he shaft 75 and, is1provided'withf ,3

.101 undercerta-in conditions..

ris 'rpmthe feedlhrd-B 1m therefore conveniently operated from the.

1l-5 arm 99 provided with a. friction roll 100.

a ainst the gages 9, which are raised so as to a low the said sheet to 'be seized by the' griprs 16 on vthe `first im ression cylinder. he sheet is then carriedJ around and receives an impression between the cylinders 2 and 3 and is carried around a second time until the axial line between the cylinders 2 and is reached when it is transferred 'to the transfer c linder which carries it until the axial line lietween the cylinders G and 4 is reached when thev cam 48 will be in the position shown in Fi 3 so as to allow the 4grippers on the sai second impression cylso vthat the sheet will be -carried past them inder to seize the sheet.

will be in the position also shown in Fig. 3,

and will receive an im ression between the cylinders 4 and 5. -At t is time also 'the stop 101 will be in the plane of the projection 104. The sheet will then b e carried around past the. axial line betw en the cylinders *6 and 4,' when the cam 4 will have moved y into the position shown in Figl, the throwoil cam 90 and guides 45 will be properly sitioned so as to cause the sheet to be reeased/rom the c linde'r 4, and deposited on the guides 45. moved out lof the plane of the projection 104, as shown.

lIt will be clear thatduring the normal operation of the machine, the automatic means previously described will trip and untrip the impression, the timing of the partsl bein such that the impression will be untrippe after the sheet has been taken on by the iinpression cylinders and carried a certain dis# tance over the same, which is well illustrated by the second impression cylinder where the gri pers and throw-off nger must be car- 'rie pastthe throw-off cam beforethe cylinders are `movedinto contact. The cylinders are then moved into printing contact so as to allow the sheet to be properly printed during the first revolution and-simultaneously therewith the connections from the rock shaft 61 will operate toposition the 'inder' an throw-off cam 90 and the guides 45 whilethe cam 48will be moved into the position shown in 1 and the top 101 moved out` of the plangof the projection 104,4 The iin-pres,- sion is then `tripped again, and the elements moved into the position shown in Fig. -3 be'- fore. the Inext sheet is;- received. All this of course will operate synchronously or in h'armony with t e tripping and untripping of the impression, and both impression -cylinders will beuntripped andltripped simultairieously.` Assiiminl nowA that one sheet has been tinted by t e first impression c ld) hasv been taken by the trans er 'cylinder 6 and is about to be taken by the cylinder 4, the parts bein in the .position shownin Fig. 3, and a' s eet is'missed in feeding, the operator then will depress the At this time, how! ever, the guides 45 and the throw-oilcam 90 he stop 101 will also havetreadle lbefore the priitin cylinders 'are moved into printing contac thereby maintaining them in their separated position. Obviously then the partswill remain in the position shown in Fights.'` The operating means for the cam 48 will Lattempt to move it into the position shownv inFig. 1, but the cam will be prevented from oscillatin owing to the fact that the stop-101 will in the path of the projection 104 and ythe parts will therefore assume the position shownin l Fig. 4, whereby the sheet which has been ceived from the .transfer cylinder will becarried around on the second imcpression cyl-, Inder Without being printed, an

properly positioned so as 'totlreleasewthe sheet and deliver. it to the guides 45, thesheet will bev held on the said impressionpylinder' as long as it. remains tripped. Ifit is fflesi'red y l as the cainsjf 48- and 90, as Well Vas the guides 45, are not I, to maintain the parts tripped for; more than' onecycle, 4the operator can move the lokiiig member into. enga ementV with fthe tieadle, and thus trip it oi.' any period desired. Since, however, the cam 48fwill be in the plane of the gripperson the second impression cylinder at the oint where-they receive a sheet, the said) grippers will be opened once to every revolution, but there being no sheet 'to receive, they will lclose again on the same sheet which is already on the cylinder and continue to carry the saine around. In order to assist in holding tlie said sheet in the bite of the grippers on the second impression cylinder, provide the rollers 111, which are ada ted to reston the margins of thesheet or e sewhere, vto assist f in prope'lling the sheet at the time when the grippers are opened. These., -rollers .arev

mounted on the arm 112,1pivotedfat 113. i

If a sheet is'nowfed kproperly to therst impression cylinder and the interrupting= means. released, 'the automatic means .for

tripping and untripping the cylinders will' regain control ofthe machine,fand the sheets on both the first and second impression-.WL inders will be printed during the slicesedingv revolution, the sheet lon the first impression cylinder beinggthen delivered to vtheti-aiisfer c ylindeiov and the sheet on the second-iin'-A pression cylinder-'being placed on thegnides f 45. Thus also when the machine is started,

it will .bepreferable to start itzwith the impression tripped and the interrupting means eifective,'so that the first sheetv fed will carried on to the second impression cylinder where it will be held until a second sheet is fed tothe first impression cylinderwhenj the' impression will be untrippedf'an 'ther-'magi ching-allowed to run normally.- In thjs'wn'yA -it will be .observed the sm'iitting of'f the will'be''prevented'b tliepresence-of a s on `the said second' if 'the impressie ist I matic.l actmgsimultaneously, to'. trip. and.. untrip bothlcy inders, the would, be

l placed? onf the blanket of`the"second impres- .sion cylinder, and in that way a .great many sheets would be spoiledbefore the ink would removed again. l -W'henl the treadle is released, the counterweight 123 will move the "and sliding'cam out of ,the plane of the in cnt the 4cam 63. A at'lis claimed is: 1. Iii-a Vmulti-ievglution rintiiig machine,

"tlie'combination, with the orm and impression members of a printingcoupleo gripvperszadapted to f'hold the sheet on the'im' pression member for more than one revolution, automatic means for tripping and untripping the impression at regular interpression member for more than one revoluvals' to properly print the sheet, means for interrupting the action of ,the automatic means aforesaid whereby th members are maintained'in their trip ed position, -and means for interrupting the normal operation of the grippers whereby-the sheet .is held onfthe impression mem r as long as the members are maintained in. their tripped position.` Q` l 2. In a multi-revolution printing machine,"`

tl'lecombinationl with the form ,and impress sion members of"a printing-couple, of grippers adaptdt ho d the sheet on the iintion,l automaticl meanstripping and untripping the impression regular intervals tov properly print th sheet,.means for interrupting the action off` the automatic means aforesaid before the .sheet on the im# pression member is print' whereby the members-are maintained in their trip ed position, and means for interrupting tlie normal o ration of the grippers, whereby the I lsheet is held on the impression member without being printed vas long as the members are maintained in their tripped position, I and is printed :after the automatic means regain control of the'machine.

3. In a multi-revolutionprinting machine,

the combination with the form and im.

pression members of arintiiig couple, of

automatic means for tripping and in itrip-` ping the impression at regular intervals,

'ppers on the impression "member, means4 or opening the said' gri pers vat a .certain point once to a number o revolutions of the impression member', means for interrupting the action of the automatic means aforesaid, whereby the members of the couple are main- A tained in their tripped position, and for pre- -.v enting the opening means foi' the grippers from acting on the latter, thereby ho ding the sheet on the impression member as long as the impression is tripped.

4. In a multi-revolution printing machine, the combination with the'form and impression members of a printing couple, of automatic means for tripping and untripping `as long as the impression stripped.v

the..impress.ion. at .regular intervals, grippers on the impression member, means foropeniI ing the said gri pers at la'certain p'oint once! '.o a number o revolutions ofthe impression member',. means for' positioning the '7o Y opcningnieans at intervals correspondingto 4.the tripping of the impression, meaiisfor interrupting the action of the automatic means aforesaid, whereby the members are maintained in'their tripped position, and means for preventing the positioning ofthe openin means adaptedl to act synchronously with t e operation of the interrupting means. 5. In a printing machine, the combination with the form and impression members of a printing couple, of gri pe'rs on'the impression member, nieans fidi` trippin the impression, means adapted to be positioned-'to -trp the grippers, and. means .to prevent the proper positioning of such tripping means for preventing the grippers. from releasing the sheet as long as the impression remains tripped.

6. In a multi-revolution rinting machine,

the .combinationwith the orm and impression members l two adj acent piintingcouples adapted to print'on the same side'of 'the' sheet,means for autmaticall trippingai'id' Iuntrilppin'g the impression o both printing couples once to each cycle of the machine,

means, Inormally inactive, but'j .mm 1i adapted),- Iyiien actuated, to interrupt! the normaloperatioii of the automatic tripping and unt 'pping means of both couples, grip,- pers on he impression members, and means l for interrupting thenormal operation of the y grippers on the impression member of the secondi co the Vsecond impression member when the 'operation. of'the automatic tripping and unt-ripping means is intermpte 7 In 'a multi coup e, .imulti revolution .printingmachinmthe ombination with the -form and impression members of two adjacentl printing couples,- of automatic means foi` tripping and untripping the impression of the'several couples at regular Intervals, grippers ony the impression "member of the -rstprinting couple, means for opening the 'said grippers once to a number' of revolutions to release the sheet, grippers on the impression 'member of the second printing couple, means :fora` opening the said` grippers once to a number of revolutions. to releasey the sheet, means for interrupting the action of theautomatic means acting simultaneou'sly on the members of the several'couples to maintain them in their tripped osition,: and means acting synchronously t erewith, to interrupt the normal action .of the'grippers ontheimpression member ofthe second couple, whereby the sheet is Vheld on the'im-g., pression member of the said second ycouple le, so that the sheet is held on v,

8. In a multi-couple, multirevolution printing machine, the combination with the and impression members of two adjacent printingicouples adapted to print on the same side of the sheet, of automate means for tri ping and untripping the impression of ti: intervals, grippers onv the impression member of the first printing couple, means for o ening the said grippers once to a number o? revolutions to release the sheet, grippers on the impression member"of the second printing couple, means for-o ening the said grippers onceto a number o revolutions to release the sheet, means for interrupting the action of the automatic means acting simultaneously on the members of the several couples to maintain them in their tripped position, and means acting synchronously therewith to interrupt the normal action ofthe grippers on the'impression member ofthe second couple, whereby the sheet is held on the impression member of the said second couple as long as the impression is tripped.

9. In a mnlti-couple, multi-revolution printing machine, the` combination with the formv and impression members of two adjacent' printing couples, of automatic means for tripping and untripping'the impression' of the 'several coiiplesat regularl intervals,

, rippers on the impression member of the 'rst printing couple,l means for opening the sid grippers once Ato a'number of revolutions t'o releaseth'e sheet, gripper-s on the impression member' of the second' printing couple, means for .opening the said grippers once to a number of revolutions to release the sheet, means for interrupting the action of the automatic` means acting simultaneously on the members of the severa-1 couples to vmaintain them in their tripped position,

e several couples at regular means acting synchronously therewith to' interrupt the normal action of the grippers on the impression member of the second couple, whereby the lsheet held on the 'impression member of the said second couple as long as the impressionfis tripped, and a single actuating device for operating both interrupting means.' I A- 10. In a multi coupie, multi -revolution rinting machine, the combination wlth the orm and impression members of two adjafA cent prntin couples adapted to print on the samegsi eof the sheet, of automatic means for tripping and untripping the impression, of the several couples at regular lntervalsl, grippers on the impression me: l ber 'of the first printing couple.,'mea.ns for Openin the'said grippers once t'o a number of revo ntions to release the. sheet, grippers on the impression member of the second., printing couple, means for opening the said grippers once to a number of revolutions to release the sheet, means for interrupting the action of the automatic means acting simul taneouslyy on the members of the several couples to maintain them in their tripped 'pos1t1on, means acting synchronously. therewith to interrupt the normal action of the grippers onthe impression member of the second couple. whereby the sheet is held on thevimpression member of the said second con le as long asthe impression is tripped, an a single actuating device for operating both interrupting means.

Signed at New York city this 19. day of December 1905. f

WALTER -sGoTT Vitnesses: y'

ANNA N. VIssiiMANN, GEo. A. 'HGFFMAN.

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