US508053A - Gripper-operating mechanism for printing-machines - Google Patents

Description

(No Model.) 2 Sheets-Sheefl'.

W. SCOTT. GRIPPER OPERATING MECHANISM FOR PRINTING MACHINES.

No. 508,053. Patented vNov. 7', 1893.

(No Model.) I 2 Sheets-Sheet 2.

W. SCOTT GRIPPER OPERATING MBUHANISM FOR PRINTING MACHINES; No. 508,053. Patented Nov. 7, 1893.

illi

- avwewboz UNITED STATES PATENT' OFFICE.

.WALTER SCOTT, OF PLAIN FIELD, NEW JERSEY.

GRlPPER-OPERATING MECHANISM FOR PRINTING-MACHINES.

SPECIFICATION formingpart of LettersPatent No. 508,053, dated November 7, 1893. i

Application filed April 28, 1891.

To all whom it may concern: Be it known that I, WALTER ScoTT, a citizen of the United States, and a resident of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Gripper-Operating Mechanism for Printing-Machines, of which the following is a specification.

This invention relates to the mechanism operating the so-called tumbler grippers ofprinting machines. A common method of operating the rod or shaft carrying the grippers is to have a slotted T-head on the end thereof, and one or more pins, studs or lugs on the frame work to enter the slot and turn the rod. This construction is open to serious getting the press ready for running ofi an edition, the workmen place the gripper shaft in such position that the slot of the T-head does not register with the pin, stud or-lug with which it next comes in contact, either injacking the machine around or in starting up; that is, the pin strikes the outside of the T- head and not the slot. The usual result is a bending or breakage of some part, entailing annoyance, delay and expense.

The object of my invention is to avoid the I possibility of damage, delay and expense caused by the non-registering ot' the parts spoken of above, whatev'ermaybe the cause of such non-registering, wliether' the carelessness-of the workmen or oth'er'event. Other objects will appear hereinafter.

To these ends, my invention consists in the devices and combinations of devices herein- I after described, and more particularly pointa drum cylinder press.

a Fig. 4 is ,an endelevation of certain parts shown in Fig. 3.

While I have shown the invention as ap plied to the impression cylinder, it is obvious m..- that itis equally applicable to feed, delivery,

Serial No. 390,797. (No model.)

pression surface 11, carries the rod 12 which has the grippers 13 and the slotted tumblercam 14 thereon. There is a delivery cylinder D having grippers 15; also, the fliers, F, tapes 16, and feed board 17. All the parts thus far described are of usual construction and operation. It is not material so far as my inobjections. It frequently happens that, in-

vention is concerned, what form of type car- .rier, or feed, or delivery be used, whether those shown or others. I Y

Theigist of the invention consists of the combination with the slotted tumbler-cam of a gripper-shaft of a pin, to operate the same, mounted to swing about an external axis, which is or may be parallel to that of the pin, or to that of the gripper-shaft. Other combinations are also included in the invention. In the preferred form of the invention, the pin is carried bya rock-shaft or an arm there of, and may be integral therewith. able stop is used to prevent the pin from yielding in one ,direction, but allows of its motion in the other direction, so that when the cam is in its proper position, the pin will engage or articulate therewith to turn the grippers, but when the cam isin animproper position, the pin will yield and allow the cam to pass freely. Referring to Figs. 1 and'2, an

.A-shaped frame 18 is, by preference, bolted 'to box 19 which receives the journal 20 of the A suitcylinder 0. The tumbler-cam14 is purposely .shown in a wrong position in order that the action of the invention may be more clearly shown. The pin A is carried by the arm 21 of the shaft 22, and normally rests against .the stop a in position to enter or articulate with the cam 14 when the latter is in its normal position. By preference, the axis of mo- .tionofpin A, asthe shaft 22, is at a greater distance from the axis of cylinder O'than is the gripper-shaft 12, as this gives greater ease of motion. When the cam 14 is in a wrong position, as in Figs. 1 and 2, the pin 'A is pushed aside thereby. A spring maybe used to keeparm 21 normally against the stop a. The gripper shaft is preferably held in each of its two extremes of motion by a suit- 5 able spring-device. A stop 23, co-operating with the tumbler-cam 14, limits the movement of the gripper shaft in each direction. spring device shown consists of a rod 24, pivoted at one end to an arm 27, on the opposite side of shaft 12 from the grippers and passes loosely through a suitable perforation in a lug 25 on the cylinder head; a spiral spring 26, surrounding the rod 24 and abutting against the lug 25 and a pin or collar on the rod 24,

normally maintains contact between the cam 14c and-stop 23. Whenever the; gripper rod -isumovedfrom either of its QOSihiODSwtO the otherathe rod 2 1 slides thronghxthe hole aiug'25yand thespring 26 is compressed until the joint of rod 24 and=arm .27: passes theimji :aginary line joining thencenter ofshaft 12 and ling 25, when the spring, if: unresisted,

- expandsvand throws the shaft l2-aro and until rthescam l i strikes the stop 23; i In lieu-20f z 5 T the=above-spring device, other suitable means "maybe used for the same purpose. 1 For in @stance, the shaft 12' may have aseetor ofpa -circle onit with L\VOVl notchesinit, and a diatzspring having a V endto fit the \lnotches govmay cngage the said: notches whenever the shaft 12 hasbeen turned farwcnough bythe pin. "lihe pin j nst-described operates the griplpears to close them in the process of feeding sheets.

nnvention when used to openthe grlppers 'to xrelease a sheet. In the structure now just defscribed the pin yields to a forcerapplied at its [inner side, and iswunyieldingi to a forcexapf- 0 plied at its outer side. In the structure to he now described; the pin yields to a'forceap i plied at its outer sideandis unyielding to aforce applied at its inner side; outernand 'innerbeing used with reference to the axis of 18,-and by preference its axis of motion-is .closer to the axis of the cylinder 0 thanis the shaft.l2. -Thepin B is made unyielding in 501m: outward direction, preferably by a stop,as it :28,ron theframe'18, and isheld againstithe -st0p by. any suitable means, as a counter I weight oi' preferably, by a spring, as s. It :may be noted here that when two. pins are disposed-as in Fig.1;that is, one yieldingontwardiy'an'd the other inwardly,each" has a function in righting the grippershaft and- ;tumbler cam for the other. Whenever the tumbler cam is in a position, relative to either i 1* will'nowdescribe thearrangementbf my cylinder 0 as a center. The pin B is ,journaledin the same way as pin 21 in the frame mounted on a stud 40ion the frame 18. gear 37istwicethesize or diameter of gear in its rightposition to be operated by the pin it and open the grippers, after which pin A can enter the slot and close the grippers. The journal box 19 is shown in Fig. 1 as being adjustable by means of screws 29, 30, and the frame 18 is shown as being bolted to the jour nal box 19. This is not an essential but a preferred method of mounting the arms or frame 18 supporting the pins, as it avoids any adjustment of the said frame independently of that of the journal box, whenever, from any cause, the latter may require adjustment. It is understood, of course, that the working positions of the pins relatively to the tumbler can1- are and remain fixed in an operative construction. The pins A and B are held from endwise motion by collars I) and c on their shafts 22 and.22* 'respectivelyrwhich are se- Lcured to. their outerxends as-shown.

The'structureshown l'iIPEigSJ 3 and 4 will now he described. 1 Thetype 1 bed, form and ink rolls areas in Fig. 1. Thetwo revolution impression cylinder 0 has an impression surface 31, grippers 13 on shaft 12-havingatum- *bler cam14,iand.stop23, all as in Figs. 1 and 2. The journal" boxes 32 (only oneis shown) areurmovable rim-guides as in Fig. 1, and are borne by suitable rods s-as 33;:these rods are or maybe: moved up and down at suitable times by any suitable mechanism suchg for instance, as that shown in wmyPatent No. 425,710, dated April 15,. 1890. Screws; 34, regulatethe descent of the boxes. 35 is a lock-nuton thescrew3t. The"; deliverycyl- 1 inders -D, and: itsgrippers, the fliers, the tapes and thefeedboard rare as in Fig. 1, andneed no description. Since, in i this lease, the-imu pressioncylinder. makes two revolutions, the

righting action, spoken of above, of the pins during the first revolution: must be avoided.

In that form of m yqinvention shown in Figs. 3 and 4 the pins haveanrendwise movement as well as the movement hereinbefore described,

1 so ithat. theyhave an .out and ran in, an inoperative and an operative position. gripper closing :pin A is journaledand slides .in a bearing'ina: frame 18 bolted to the box The 32-for the cylinderjournal. Thepin B for opening. the grippers is mounted in the frame 18 in a manner=similar to that of pin A just described and rests againststop 28. To cause each pin to assume its out and its in position each once totworevolutions of the cylinder 0*, or one duringone revolution and theoth'er during the. next revolution of the cylinder, I employthe. gears 36, 37, cam 38, and lever 39. ,The gear 36 is placed on the extended end of the journal of the cylinder G and meshes with the gear 37 which is The cumferential groove in its outer end. A pin 42 on thelever 39 engages groove 43 in the shaft 22 of pin A, and pin 4.4 on the said lever en A spiral spring surrounds rod 48 and abuts.

against thelug for said-rod and against a pin or collar on the rod., The pin B is held against the, stop 28, but-is not prevented from sliding, by a similar rod 5], pivoted to an arm on the pin, passingthrpugh a dug or frame 18*, and surrounded by-a spiral spring 52, which abuts.

against the lug and a pinor collar on the rod.-

It will ,be noted that the tumbler-cam is shown in Fig. 3 as being-in asimilar position to that shown inFig. 1, and for a similarreason. Assuming that the. tumbler vcam were. in proper positionto be closed by the pin A and that it is to the right of the pin inFig. 3, the operation of the parts is, as fol-lows: 'lhe cylinderturningin the direction indicated by, the arrow, brings the upper. wall of the slot.of;tl1e. tumblercam into contact with thepin A and the tumbler-cam and gripper shaftare turned to close the grippersto take a sheet fromthe feed board. The pin A being in its ..in orv operative position, the pin B is in its out? or inoperative position, and, remains out? until the tumblercam has passed-it when cam '38 (making a half turn to one turn of. the cyl-i inder) moveslever 39 from the position shown. This .moves bothpins; pin .A is moved to its .out position, and pin-Bio its .,in position. Thetumbl'er-cam therefore passes clear of pin A just as it ,passed-clearof pin B and the grippers remain closed. ASthetumbler: cam againpasses pin,B,-the,latter enters the slot and opens the grippers. --,T.he cam 38,

again vmoves the lever;39 thistimeinto the. position shown, moving pinsA and Buinto the positions shown. Pin Aagain operates thev tumbler-cam and theabove describedcycle of movements begin over. i-lfyfromeany cause the tumbler-cam, as itapproaches pin A in its .in position,.happensto be in the posi-, tion shown in Figs. 3 and 4, it lifts thatpin and is itself unmovedfrom theposition shown until itis operatedby the;pin,B,when the latterisin its i nposition. Q When the tum: bler-ca'mis in its other position (not shown) as it approaches the pin B, it-,pushes that aside andis not moved itself, until thepin isin its in position,,when it is operated. That is to say, the pair of pins each have the righta ing function relatively to the other, just as in first case described, -v p Many changes. may be made inthe mechanismfor. sliding the pins without departing from .myinvention. They may be so oper-.

atedlfrom other parts of the machine than; the journalof the impression cylinder. Each pin mayhave' itsown operating mechanism,

independent of thatofthe other. 'lheess'en: tial feature in the case shown in Figs.'3 and 4 is the pin having a turn-ing and a sliding movement, whatever may be the nature of the means used to give it the latter move-. inent. -As above stated, it is. preferred to have theiaxis of motion of the pin parallel to that of the'cylinder whose. grippers the pin,

is to operate. v

; While the invention isshownin all'ecases as being on an impression cylinder, its use is not limited to such a cylinder.

My invention may operate in another manner-in a two revolution cylinderpress. In-.

steadof sliding in andout for the purposes described, thelpin or. pins may be turned by. suitablemeans untilthe pin is out'of the path of the tumbler cam in every possible position.

of the latter.v This is shownby the dotted; positions of the pin A andthe tumbler-cam. The positions of thespring devicesfor hold.- 7 ing the pins, against, their respective stops,

would be different from thoseshown, so as to.

return the pins toposition. Ihave not shown any mechanism for operating my invention vin this lastform, as I intend to-make. that.

the subject-matterof another application- It is not, necessary that the slot in the vtumdle, thus cutting; it intotwo slots.

, When my invention is usedinconnection I with an oscillating cylinder, the pins exchange functions during the reverse or .nonprintin'g movement of theimpression cylinder; thatis:,. L

the pin A opens thegrippers if closed .(othenwise,-it. merely lifts over the tumbler. cam) and pin B-closes them if ,open (or is; moved inwardly, by --the tumbler cam if theyare.

closed), By theterm limitmyself to absolute parallelism, ,but simply. use it as a convenient term to .mean parallelism more orlessapproximate. I

While a two, revolution cylinder is shown. .in Figs. 3and 4 and is described above, itis obvious that it might make more than ;two..;

revolutions, and the pins be operated accordwithin the'scope of myclaims.

4 to move the pin both inand out, it isobv'r .IIC

. in-gly without departing from myinvention, ,and I; regard sucharrangements,.asjcolning While I have shown a lever in Figs. -3. and,

,ous that vthepin could be moved in ,by the le-,

ver and out by a spring, or .vice versa, with-- 'out departing from my. invention, beingha.

construction. equivalent to thatshown. Four-.

the'r, thecam 38 may-control the;lev.er39; in. .anyway other than that shown. The. can1 3.8-

maybe a pe one andtthe leverheld..-

against it by a spring,-a construction equivalent to thatshown. Thelever 39;co l1 .d operate'the pins .when theiraxes of motion are at ,right angles to 'the axis of the cylinder since -its pivot would only need-to be at right an:

95 bler cam shallextend all the Wayacross, since there may be a -partition orwallin the mid-.

of said arms,-and -springs pressing the arms-1 against)said stops;substantially as and for then purposes d'escribeda t Y 9. Thecombinationofia tworevolution cy1- inder, the tumbler-carnof-itsgripper-shaft; an:

: arm marrying: the: pin; ra stopwtheretor and mechanism moving lthepin iamdran'm into op erativezpositionflduring one revolution of the 7 5 cylinder and outof said position duringthe next roperati'on :thereofy substantially as do-' scribed.

10. Thecomhi nation otaitworevolution eyl 1 indelytheltumblencannof its gripper shafit ia 8c pinata operate the eams*anw-arm carryingthe i pineastoptherefior,=and'vspring devicesrpressr ilng .the"armiagainsmhc pin; with mechanism moving said'arnr andtpin into operatinepoe rs ibiml diuring'bne revolution 'of thehcylindem randontot said positiorrdnringthe next revo lution thereofe substantially deseribedri I y 11. The combinationof:a tworevolutioneylw inclergwthe itumbler cam of i its gripper shafit,

i an arimcarryingtthe ping a shaft parallel" to gles to the pivot shown, and a slight change only in the cam making it aface camywou-ld be required.

What 1 claim is- 1. In a printing machine; the combination of thetumbler-ca-m of thegripper-shaft, a pins to operate thesame, ans-arm carry-ingthepim and havingi'its axis of motion paralleltothat of the gripper-shaft, and a stop limitingnt'hew motion of the pin in one directiong whereby the cam is operated or the: pin movedraside, substantiallyas de'soribedr l 2. In a printingmachine;theieombination of the tumbler-camof 'the'grippenshattya pin to operate thersame,-an arm1carryingthezpin and halviin g itsaxis of-moti'om paralleh to What of thegripper shafitya stop-: 'limiting theiimorn tionnof =thei =pin in one direction; anrli-atspring pressingitheipintoward-thestopg substantialty-- asandxtor theipurposes describedi i 3. Thecombinatio'n of a'cylinder moving-i aboutitslaxis; its grippers and their shafitih'arv ingraslottedcam; therpin to operatetheramgn an armsupporting thepin andrhavingfits axis of motionparal lel to that of the cylinder, astop limiting the motion of the pin; and at spring:- pressingithepin toward the stop,-substantially the axistof the=cylinder and carrying said 1 armgfzastop for said arm means-holdin g said :l-arm' against said stop lin a yielding manner; 1 and/mechanism movinglsaid shaft and pin as and i'or thepurposesdescribed: into operatine position duringone revolutiom 4. Theicombination ofi a cylinder having of thecylindewaindtoutot*saidposition'dnr- 0 motion aboutiitsiaxis, its grippersmnd their ingirthem'extrrevolution thereofasubstantiaflly shaft-having. a slottedcamntwor pinsg oneto 1 as describedi ropen and thelothewtoclose thegrippersypiv 12. Thecornbinationof.atworevolntioncyli otedarmscarrying said pins,*andstopsllimitindeiwthertumbler -camiofnits gripper-shafitm I00 ing the motion of the pinsythe one inwardly" and the other-outwardly, substanti'allyas and: for the lpurposes describedzw 5. Thecombination ofi a cylinder moving abont-itsa-xis; the tumbler-cam of i-tsgrippershaft,-ltwo pins, one toopen"and the 'other to close the grippersppivoted armscarryingsaid pins, a stop outwardly of one and inwardly of the other of "said arms, and springs pressing the pins toward :said stops, substantially as and for the purpose-described:

6. The combinationof a tumbler-cam of the grippershafit, two -pins, one to open and' the other to close said grippers; arms 'carrying said pins, and having their axes of unotion parallel to that of the gripper-shaft; and means holding onepin against outward and the other against rinwa-rd *motion and allowing each to move the other way, substantially as described.

7. The combination of a cylinder moving about its axis; the tumbler-cam of its grippershaft, two pins; one to openand theother to c1ose-the grippersyarms carrying said pins and havi-ngaxes of motion parallel to that of thegrip'pers, a stop inward of one and a stop outward of the other of said armsyand means holdingthe arms against the stops yieldingly, substantially as described. a

-8. The combination of a cylindermo'ving about its axis, the tumbler-cam of its grippershaft, two pins, one to open andthe other to close said grippersyarmsbearing said pins,a stop inward of one and outward of the other P stantiallyas-described: M I

arms, means holding; saidarms against said moving said arms and pins, onednto and: the other out of its operative positionduring each revolution of the:cylinder; substantially as describedi 14. The .combination of a two'revolution 03 1* against outward and -the other against -inward A motion; and mechanism: rmoving" the of the cylinder, substantiallyas describedw j 15. The combination of atwon'evolutioncylof the other of said arms, spring devices presspin :to bperatethe same,an arm carrying the 1 pin, a shafit carryingitheviarmga stop forithe r armg springirdevices holding therarm against "the stop andlmechanismttormovingthe shaft Y andnpin into operative position iduring one :revolution of the oylinden andout of said position during-tho nezinrevolutionthereof; substops in a yielding manner; andunechanisim inder, "the tumbler-cam of its gripper-shaft, i two pins to operate the sameyarms carrying the pins, shafts parallel to the cylindenand carrying the arms, means holding-one pin 'inder, the tumbler-cam: of its gripper-shaft, twopins to operate the same,shafts parallel 'to the cylinder and having arms carrying said pins, a stop inward of one andoutward 13. The combination of a two revolutioncyl inder, the tumbler-camtot' its gripper-shaft,

two pins,-arrns1carrying'thepins, a stop out- M ward'of one and inwardot the oth'er of s'aidi i shafts to move one pin into and theother out of operative position during each revolution ing said arms against said stops, and mechanism sliding said shafts to move one pin into and the other out of operative position stantially as described. v

16. The combination of cam l4, gripperduring each' revolution of the cylinder, subshaft'12, pin A, arm 21, a spring, and stop a,

substantially as described.

17. The combination of cam 14, grippershaft 12, pin A, arm 21,shaft22 a spring, stop a, lever 39 engaging shaft 22 and means for moving lever 39,"'subs tantial1y as described.

18. The combination of cam 14, grippershaft 12, pins A and B, the arms carrying them, the shafts 22 and 22, stops at and 28, springs, centrally pivoted lever 39 engaging shafts 22 and 22, and means for rocking said lever, substantially as described. 7

Signed at New York, in the county of New York and State of New Yo'rk,this 27th day 20 of April, A. D. 18915 i p 4 WALTER SCOTT.

Witnesses; I I

' FQGOODWIN,

114W. BARKLEY.

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