US752291A

US752291A - Whitlociv printing press mfg

Info

Publication number: US752291A
Authority: US
Publication date: 1904-02-16
Anticipated expiration: 1921-02-16

Description

s. misc '2 BED CYLINDER mama FLA APPLIIUATIQZ? FILED JULY 20,

2 SHEBTS SQZEET l.

2E0 MOQEL,

No. raaeer Unrren erm ne FLAT-=BED GYLlNDE .ritemeu February 1c, 19cc.

CONNECTICUT, ASSEGNOR TO THE MFG. (10., 3F DERBY, CGNN'EUQL n isninriwersess srnoirxcnrion forming'part of Letters latent Ne. 752,2e1, dated February is, 1984. Application filed July 20, 1903. Serial No. 1683 10. lilo model.)

To (LU- whom, it may concern:

Be it known that I, WiNFIELn S. HUSON, Derby, in the county of New Haven'and State of Connecticut, have invented a new and useful improvement in Flat-Bed Cylinder Printing- Presses; and 1 do hereby declare the following,

, when taken in connection with the-accompanying position; Fig. 3, a broken view, in rear 5 ing drawings and the letters of reference marked thereon, to be a i'ull, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, abrolzen View, in side elevation, of a printing-press provided with my improved impression and tripping mechanism, the cylinder being shown in its elevated or non-printing position and the tripping mechanism in l its normal position; Fig. 2, a broken, View, in side elevation, of one pair of the cylinderl box jaws with the outer bushing of the eccentric remoied'to show the eccentric in its printi l l l ing position; Fig. 2*, a corresponding View with the eccentric set to take a diii'erent p intelevation, oi portions of the impression mechanism' with the bushings and the step of the eccentric in vertical section; Fig. 4, a plan i View or one pair of the cylinder-box jaws; Fi l 5, a broken plan View of the tripping mech' anisrn; ,Fig. 6, a broken View, in side elevation, of the tripping mechanism with the parts thereof in the safety positions taken by them when the cylinder is in its printing position;

gagement of the guard-roll with the guardsnrface on the gab-hook just after the same has begun to draw clown the cylinder.

My invention relates to an improvement in that class of fiat-bed cylinder printing-presses to permit the reciprocating type-bed to make its return movement.

More particularly, my invention reletesto'; 9 9, producedan improvement in the impression mechanism and in the tripping mechanism of such presses, the former being the mechanism employed for raising the cylinder into its ele vateiior clearance PGSi-Hfifi and lowering it wit in which the cylinder is lifted clear of the forth fern into its depressedior printing position and for of holding it in each position and the latter licing the mechanism employed for temy iorarily suspending the raising and ion-'eringgoperation of the cylindei hy disconnecting the same from the power at the time when it is in its elevatedor clearance position.

The n am objects of my invention are to pro vide such presses with simple, durable, and powerful impression mechanism constructed with particular reference to permitting the cylinder to be readily removed and replaced and the parts of the said mechanism to he accessihie for attention, repair, and adjustment, and, further, to produce a tripping mechanism of simple and reliable action and constructed with particular reference to safeguarding the manual or non autoinatic release of the 'cylin der from its elevate-d or clearance position at any other but the right moment, even though the pressinan accidentally or when excited de- -WVith these ends in View my invention 6023:

sists in certain details oi construction and con: binations parts, as will he hereinafter ale-- scribed, and pointed out in the claims.

lt'niey be well to say at the outset that'in asmuch as the impression inechanim is duplicated-at each end of the imprcs n-cylinder a description of one mechanism svilisufiice for both. That on the right-hand side of the press will be chosen for the purpose."

The impression-cylinder 2 has its right-end journal 3 supported ina two-part journal box, comprising an upper part i 53, secured together by bolts 6 passing through the upper part t and threaded into tlie lower The said parts of the ion rnal-hoxare ippon their outer corners with h,

ribs

7 ,1 enacting with guide-ribs 8, to .ed at the 'o'oi ners of the upright cylinder-hex jaws by centrally cutting exvay the .upper 'end of the upright 10 ofithe righthend: sicle frei'ne 11 of the press to form the rectangular iournahbox opening 12. Tirol-lower pert fiofthe-two part journalbom is' formeii one i aiepening and a lower partplate-like part, which, for convenience, I shall tion, and therefore when the printing is ac-v hereinafterspeak of as the bearing-plate l3. tually being done.

This plate extends downwardly into a vertical For the oscillation of the eccentric 16 I emrecess or chamber 14:, formed in the upright ploy an arm 25, clamped upon its outer jouri aforesaid, leading out of the bottom of the nal l8 and extending rearwardly therefrom. 7 hex-opening 12 and having an outer wall 10 The outer end of this arm is pivotally conand an inner wall 10'. A rectangular opeunected with the upper end of a two-part coning 1.5, Fig. *2 and Fig. :2, formed in the said necting-rod 26, the parts of which are united bearing-plate 13, receives the eccentric-step by having their ends oppositely threaded and TO it upon which the eccentric 17 rests, the up entered into an adjusting-sleeve or union-nut 75 pcri of the eccentric hearing, as shown, I 2 having right and left hand threads. By directly against the upper wall of the open- I turning the said sleeve .or union-nut the rod ing i5, against whic it acts to assist, if need is virtually made shorter or longer, as may be, in lifting the cylinder. The two journals be required, to increase or decrease the presj i8 i8 of the eccentric 16 are mounted in sure of the cylinder on the form or type. 80 fia" ged eccentric bushings 19 19, set into bush- J am-nuts 27, located at the ends of the sleeve ,7 openings 20, located opposite each other or nut 27, prevent the same from turning afin the outer and

inner walls

10 and 10 of the ter the rod has been adjusted. The lower end iniright l0 and opening into the said charm of the said ti 'o-part connecting rod is pivoted 26 her 14.. I may here state that by making the to a roclearm 28, secured to a rock-shaft 29, 5

bushings 19 eccentric in form the bushingarranged transversely with respect to the openings may he made small enough not frame of the press and provided at -1ts oppoto weaken the upright and yet large enough I site end with the corresponding rock-arm of to permit the ready introduction into and re- 1 the duplicate impression mechanism at the 5' moral from the chamber 14 of the eccentric I other end of the cylinder. 9 i6 and its step 17 in assembling and in dis- I For the oscillation of the rock-shaft I promounting the press or in any examination f vide it with a bifurcated gab-hook arm 30, thereof. furnished with a gab-hook or coupling stud it willtaf course be understood that byturni 31 for engagement by a reciprocating gabg the eacentric 17in one direction or the hook 32, entering between the two members 9 )ther the sa $116 will act through the bearing i of the arm and located upon the rear end plate 13 and the two-part journal-box. above of a gab-hook bar 33, the forward end of which is pivotally connected with the upper lander tl'ireugh the very short distance reend of a cam-levcr 34:, swinging on a p1vot35 lcscrihe to raise or lower the impression- ,5}; "mired for bringing it into contact with the l in the base of the press and carrying a cam I00 I l l l 'gvpc on the type-bed and for clearing it f 0111 roller 36, traveling in a cam-path 37 in the contact with such type. impression-cam 3B, which is mounted upon in order to relieve the eccentric in whole the ca1n-sl1aft39 of the press and which makes orin part from the task of lifting the cylinone complete revolution for two revolutions der from its printing to its clearance or nonof the imprcssion-cylinder and for one com- 5 printing position, I employ a heavy spiral plete movement back and forth of the recip- :ounterhalancespring 21,-located in a springrocating type-bed. The cylinder 2 and the rhamber 22, formed in the upright 10 and cam-shaft 39 may be driven in anyapproved Jead ing out of the bottom of the said chamber n1anner-as, for instance, by the devices shown 4 5 i. This spring bears at its. upper end against in United States Patent N 0. 725,714. Under I 10 a washer 23, carrying a heavy screw 24, which this construction the gab-hook bar 33 and impinges directly against the square lower gab-hook are reciprocated back and forth; edge of the hearing-plate 13, to which it transbut it will be seen by examining the form of mits the lifting effect of the spring, which the cam-path 37 that the hook and bar will with the upper wall of thc'opening 15, as dca guard 42, formed upon the gab-hook and :cribed, enables the eccentric to act to assist consisting of a cam-like surface arranged in the spring or to take its place should it give position to be engaged by the said roll under :iut or be removed. The cylinder descends certain conditions, as will he explained later from its non-printing into it printing posion, the said roll and guard forming features us against "the power of the spring by its of my improved tripping mechanism, which own gravity, together with the downward I is employed to temporarily suspend the lowthrust of the eccentric, which, it will be undercring of the impressioircylindor in case the stood, positively holds the cylinder in its eleprcssman should fail to feed a sheet or a sheet 5 vatcd position as well as in its printing posishould go wrong, or for some other reason 39 5 will be so proportioned in power to the weight pause at the opposite limits of their stroke, 1 5 of the cylinder that it will virtually counter- 1 these limits respectively representing the elebalance the same with just enough power on vated or nonprinting and the dcpressed'or the side of the spring to cause the same to printing positions of the cylinder. 7 lift the cylinder without "the aid of the cccen- I A safety-roll mounted upon a pin 41 in the trio, although the engagement of the eccentric outer end of the ga -hook arm 30 coacts with swiveled head 52 traversed lower ends flared and coupling or lifting ism, as will appear later on.

making it desirable toretain the cylinder in its elevated or clearance pos tion.

As herein shown, my improved tripping mechanism comprises a toot-tread 4:3, Fig.5, mounted upon the upper end of a stern H,

extending upward through the platform 45, on which the pressnian stands, and downward through an opening &6, having its'upper and formed in an arrn 47, secured to a shaft 48, journaled in a bracket 49, depending from the frame 11. A collar 50, mounted upon the stem it, engages with the upper face of the arm 2?, same will be depressed and the shaft e8 turned when the'pressman puts his foot upon the foot-tread 43 and pushes the stem t4: down- Ward. To the opposite or inner end of the arm 51, carrying a by a central opening 52, receiving the rod-like shanhof a link 54:, the elongated which receives a tripping-pin the end of the gab-hook r'ocleshaft 43 i secure an opening 55 of 56, mounted in tension 57. This slot-like opening 55 is made considerably longer than the thrust of the foot-tread stern hi to assist carrying out the safety function or" the tripping mechan- A coiledxspring 58, encircling the lower portion of the shanl: 53;,has its upper end secured. to the swivclcd head 52 and its ioweiend secured to the up- This spring is normally not under tension and becomes operative only when the foot-tread 43 is depressed, whereby the elevation of the arni 51 .moves the swiveled head 52 outward on the shank 53, and thus stretches the spring, which then begins to exert an eii'ort to lift the link 54, but without eilect on t .e gab-hook unless the pin 56, carried by the gab-hook extension,

is engaged at this time with the lower end 30, which Whenso coupled with the gab wall of the slot 55 in the link. I

1n the normai or What lniay call uninterrupted operation'of the press the gab-hook 32 remains in unbroken engagement with the gab-book stud 59 in the gab-hook rock-arm hook is continuously swung back and forth for the positive oscillation of the eccentric,

when the cylinder is elevated, Fig. 1, and

whereby the cylinder is operated During this time the tripping mechanism autOrnat- V or without effect, through the pin ically c'berated, thoughidly by reason of its connection '56 with the gab-hook extension 5?, which moves it through allot the positions intermediate between the position which it takes as shown in the positionyhich it takes when the cylinder down, as shown in Fig. i.

' The tripping mechanism play to interrupt or temporarily suspend the above-described normal or regular action ct cutting out, so to speak, the inn the press so as to prevent the pression mechanism, power of the camshaft 39 from so that the J ping'pin 56 located at the botton'ioi theopcnis brought into being trans- 1 result in breakage. structed and arranged and tuned in their action so that when the cylinder is held in its 1 elevated or clearance position the parts of the tripping mechanism will have the positions in which they are shown in Fig. 1, with the triping 55 in the lifting-link 5 1. It with the parts in these positions the tread 413 is depressed, the spring 58 will be placcdund'er suificient tension and with it the gab-hook, which will be raised su'liiciently to disengage it from the gab-hook or coupling stud 31, whereby the power oi the cam-shaft is cut oii' from the eccentric. The gab-hook, it should be here remarked, is free to be raised, as described, at this time, bcceuse the safety-roll so is in a clearance position with respect to the cam-like guard 42, located upon the hook itself. Just as soon as the gab hook is disengaged from the gab-hook stud the gab-hook, although continuing to reciprocate back and forth, will not, as stated, communicate any of the motion of the cam-shaft 39 to the eccentric. The cylinder will there fore remain at rest in its elevated position until pressure has been removed from thr tread e3, which takes the tension oil from the spring 54; and allows the gab-hook to descend 1 by gravity and reengagc with the stud -31.

g i l l i l l l 1 With reference now to the sa't'e-giuirding functions of the roll it} and cani-lihe guerd it has been found in practice that a'pr .nian through inadvertence or excitement is very liable to step or jump on the foot-tread and thus place the spring of the tripping mechanism under tension ready for operation at-a time when the tripping function of the tripping mechanism cannot safely be brought into play. 7 Here the roll and guard step in, so to-speak, and prevent any accident which might result f om the untimely lifting of the gab-hook, for siibstantially from the time the cylinder leaves its elevated and ioched. position to the time it returns to that position the rolleO is engaged with the cani iihe guard over which the roll rides back and forth, with the effect of keeping the gab-hook locked down, as it were, in engagement with the abhook stud. The roll, hoivever, rides ofi' the guard and is lifted above the same, as shown in Fig. 1, when the cylinder is lifted into its elevated position and remains so clcarerf 'froin the guard long enough to cover the period in wnich it is designed to have the tripping No matter, therefore,

and no matter W To cut it out'at any other time might to enable it to lift the linknether he hoids' it down or ioo llO

. anism cannot operate link.

. same result.

&

not or how long, no matter how untimely he is about it or how excited the tripping mechto cut off the power from the eccentric until the cylinder is in its elevated and therefore safe position.

The untimely depression of the foot-tread is also nullified by the angle at which-the lifting link is placed with respect to' the gab-hook, whereby the' tripping-pin moves away from the lower end of the opening in the liftinglink so rapidly that the action of the link upon the pin would be nullified even if the spring should be put under tension at any time except the right time, for the reason that the link will not, of course, act to lift the hook except when the pin is at the bottom of the opening in the For instance, should the tread be depressed when the cylinder is down the spring would be placed under tension and the link lifted, but without any effect upon the gabhook, as the tripping-pin at such time would be at the upper end of the opening of the link, as shown in Fig. 6. But suppose the pressman should jump upon the foot-tread 43 just as the gab-hook 32 is starting rearward to effect the lowering of the cylinder 2, and thus place the spring 58 under tension before the tripping-pin. 56 has moved away from the lower end of the slot 55 in the link 54 for a distance equal to the downward movement of the stem 44:,on which the foot-tread is mounted. Under these circumstances the tripping mechanism might operate during the lowering of the cylinder; but for the fact that the guardroll 40 moves in an arc of a larger circle than the gab-hook stud 31, whereby the roll moves rearward faster than the tripping-pin 56 with the effect of bringing the roll into engagement with the cam-like guard-surface42, as shown in Fig. 7. In this way the period immediately following the beginning of the downward movement of the cylinder is covered by the safety functions of the guard-roll and cam-like guardcurface. v

Bypreferencc I construct and arrange the parts so that when the cylinder is in its depressed or printing position. the center line of the connecting-rod 26 will intersect the axis of the rock-shaft 29, as shown in Fig. 6, thus forming a lock and preventing the arm 25 from being raised by any other means than the 0scillation of the shaft 29, so that when the impression-cylinder is in its printing position it is securely held there by the. alinement of these centers V As it may not always be convenient to adjust the vertical movement of the cylinder to the right impression contact with the type by means of the union nut or sleeve 27 on the connecting-rod 26, i provide for adjusting the eccentric bushings 19, which accomplishes-the To this end ,I furnish each bushing with an arm 60, Fig. 4, and connect the ends of the arms by a tie-rod 61, the upper and lower faces of which are respectively enmore, in some ple already described of the eccentrics, which I'of being transferred to vices; The counterbalance -springs being.

shifted, with the effect of raising or lowering the eccentric 17, and hence of placing the movement of the cylinder as desired with respect to the type-bed. While it is not essential to provide for both of these two different modes of adjusting the vertical movement of the cylmder, as one might be employed to the exclusion of the other, I illustrate both, as under some circumstances one adjustment might be properly adjust- I better than the other, and viceversa. Furthcr presses the adjustment of the connecting-rod 26 maynot be at all convenient or possible, owing to its .inaccessibiiity' Iii case provision is made for the 'adjustmentfof the eccentric bushings the parts may be set, so

that when the cylinder is in itsdewn'position,

as shown in Fig. 2*, the center tric will be in line with the vertical axis of the journal of the cylinder, which will thus belocked in its'down ofthe 'cccenposition on the priuciof so locking it by' i bringing the longitudinal center of the con-u meeting-rod 26 into line with the vertical center of the rock-shaft 29.

My improved 1 only simple and compact in character, but far more direct in its action upon the HHPIGSSIOII- cylinder than the devices of theprior art, and I therefore requires less .power for its operation and is more reliable in its' action. All this is due in large part to the location of the eccentries in bearingplates depending from the) mpress-ion mechanism is not,

journal-boxes of the cylinder and mounting the journals of the e'ccentricsdirectlyin thepoints comparatively I I thusavoid the use of the long rods heretofore em-f cylinders the action" in the prior devices frame of the machine at close to the journals of the cylinder;

ployed to transmit to the cylinder. These rods stretch during the impression period and do' not hold the cylinder" down to the work as rigidly as with my device, in which the eccentrics are located very close to the journals which the use of the At the same time the eccentrics and the parts immediately connected with them are readily accessible for attention and repair and are easily removed for the removal of the impres' sion-cylinder itself. Under my construction the mainburden of carrying the cylinder is still left with the frame of the machine instead the impression dein. its character, and by the construction of the cylinder and in long rods is avoided.-

752,291 I i j l pointed out is rendered inoperative except when it may be safely operated even though the pressman in his excitement may depress the foot-tread and hold it depressed for-some time. v

in View of the modifications suggested and of others which may obviously he made I wouldihave it understood that i do not limit myself to such construction, but hold myself at liberty to make such departures therefrom as fairly fall within the spirit and scope of my invention. v

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is v 1. in a flat-bed cylinder printing-press, the

' combination with the frame thereof, oi a twopart jou'rnahb'ox mounted therein, acyiinder haying a journal which bears in the said twopart box and an eccentric mounted in the sai frame close to the said journal and actingthereupon through the lower member of the" said box to move the cylinder to the printingdine of the press. i

'2, in a fiat-bed cylinder printing-press, the combination with the frame thereof, of a twopart journal-box mounted therein, a cylinder having a journal which bears in the said two part box, an eccentric mounted in the said frame close to the said journal and acting there upon through the lower member of the sai box for moving the cylinder to the printingline of the'prcss, and a-counterbalancc-spring mounted in the frame and acting through the lower member of thcsaid box to move the cylinder away from the said printing-line.

3. in a tiet oed cylinder printing-press, the Combination with the frame thereof, of a twopart journal box mounted in t said frame and having its lower member formed with an integral depending bearing-plate, a cylinder having a journal which bears in the said twopart box, eccentric mounted in the said frame close to the said plate and coact-ing therewith to move tl :e cylinder to the printing-line, and e connterbulance-spring mounted in the said frame and coacti'ng with the said plate to lift the cylinder from the printing-line.

, i. In a fiat-bed cylinder printing-press, the

combination with the frame thereof, of a twopa'rt journal-box mounted therein, an impression-cylinder having a journal which bears in the said two-part box, an eccentric mounted in the said frame close to the said journal and coacting with the lower member of the said two-part box to nove the cylinder to the printing-line of the press, means for adjusting the said eccentric to shift the position of the cylinder with respect to the said printing-line, and a cor.nterbalance-spring mounted in the said frame and coacting with the lower member of the said two part box to lift the cylinder from the said printing-line,

5. In a flat-bed cylindgr printing-press-, the combination with the frame thereof, of a twopart journal-box mounted therein, a cylinder having a journal which bears in the said twopart box, an eccentric mounted frame close to the said journal and coacting with-the lower member of the said,twopart box to move the cylinder to the printing-line of the press, eccentric bushings for the said eccentric, means for adj misting the said bushings for changing the position of the eccentric and hence the cylinder with respect to the said printing-line, and means for oscillating the eccentric for the operation of he cylinder.

6. In a fiat bed cylinder printing-press, the combination with thecylinder thereof, of an ecccentric, eccentric bushings for the journals of the said eccentric, arms attached to the said bushings, and set-screws coacting with the said arms to shift them for changing the positions of the, bushings with respe t to the journals of the eccentric; 4

v 7. Ina fiat-bed cylinder irinting-prcss, the combination with a framehaving cylinder-box jaws, of a two-partjournahbox mounted in the said jaws, a cylinder having a journal which bears in the said two-part box, an in tegral bearing-plate depending from the lower member of the said tmo-part box, an eccentric journaled in the frame below but close to the said jaws and acting directly upon the said plate to move the cylinder to the printing-line of the press, power connections for operating the said eccentric, and a co unterbalance-spring mounted in the frame and coacting with the said plate to lift the cylinder from the said printing-line. i 8. In a fiat'bed printing-press, the combination with a frame having :1 psi r of journal-box jaws and a chamber, of an impressioil-cylinder, a journal-box therefor provided with a bearing-plate entering the said chamber, an cecentric coacting with the said plate, bushings located in the Walls of the said chamber and eceiving the journals of the eccentric, and power connections for oscillating the said eccentric. v

9. in a flat-bed cylinder printingmress, the combination with a frame having a pair of cylinder-box jaws, of a twopart journal-box mounted therein, a cylinder having a journal.

which bears in the said twomart box, an in tegral bearing-plate depending from the lower member of the said two-partbox, an eccentric mounted in the frame, located below the said jaws and entering the said bearing plate through which it acts to move the cylinder to the printing-line of thepress, and a counterbalance-spring mounted in the frame, located below and close to the said plate and acting thereupon to lift the cylinder from the said printing-line. V

'10. In afiat-bed cylinder printing-press, the combination with the 'impu tsion-cylinder thereof, of impression mccl" sm for raising and lowering the cylinder, tripping mechanism coacting with the said impression mechanin the said W Pf w er 3 No. 752,292. PATENTED FEB. 1"6, 1904 P. JUSCHKE.

POOL BALL PLACER AND HOLDER.

APPLIOATIDR' FILED OCT. 23, 1903.

N0 MODEL.

A TTOHNEYS