US1082374A - Feeding attachment for printing-presses. - Google Patents

Description

B. P. UPHAM.

FEEDING ATTACHMENT FOR. PRINTING PRESSES.

APPLICATION FILED NOV. 8, 1910.

Patented Dec. 23, 1913.

5 SHEETS-SHEET 1.

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FEBDING ATTACHMENT FOB. PRINTING PRESSES.

APPLICATION FILED NOV. 8| 1910.

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FBEDING ATTACHMENT POR PRINTING PRESSES.

APPLIOATI'ON FILED Nov. a, 1910.

1,082,374. Patented De@.2 3,1913.`

5 SHEETS-SHEET 3.

B. F. UPHAM.

FEED-ING ATTACHMENT PoE PRINTING PRESSES.

APYLIUATION FILED NOV. 8, 1910.

Patented Bee. 23, 1913.

5 SHEETS-SHEET 4.

EN@ f// B. P. UPHAM.

FEEDING ATTACHMENT FOR. PRINTING PRESSES. APPLICATION FILED Nov. s, 1910.

. 1 ,082,3'74, Patented Dec. 23, 1913.

5 SHEETS-SHEET 5.

@VWM ,I Inman/ELL BUBT F. UPHAM, 0F EVANSTON, ILLINOIS, ASSIGNGR TOSOUTHG'ATE MACHINERY OMPANY, 0F BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

msm-No nrirnomannr son PRINTING-:annessa Specification of Letters Patent.

Patented Dec. 23, 1913.

Application llled November 8, 1.910. Serial No. LBSS.

fball whom it may concern,

Be it known that I, BUn'r F. UPHAM, of Evanston, in the county of Cook and State of Illinois, have invented certain new and useful Improvements vin Feeding Attachments for Printing-Presses; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is an improvement in antomatic sheet feeding apparatus, especially those used in connection with printing presses-of that class in which the sheets are automatically fed to the point of delivery, or seizure, by the impression cylinder grippers, and which are provided with means whereby if a sheet is not fed in time, or is improperly presented, the feeding mechanism is automatically tripped so as to stop the feed, and the press thnow-off-impression mechanism is also usually tripped by the same means-or at the same time-- so as to prevent any offset impression from the type upon the packing of the impression cylinder.

The invention is particularly designed for use in connection with the so-called Dexter or Cross feeders, such for example as are illustrated in patents to Cross No. 7 99,457 of September 12, 1905 and'No. 812,260 of February 13, 1906.

The principal object of my invention is to cause the sheet to be withdrawn out of reach of the grippers if it should be misplaced so that no projecting portion of. a misplaced sheet will be liable to be caught by the grippers and carried into the press; and in carrying out this invention I utilize part of the sheet feeding devices of the known automatic feeders, such as the Cross feeder,to produce a quick reverse or backward movement of the improperly fed sheet at the instnt that the feeder is tripped.

I will now describe the invention as applied to a' Cross feeder, and in the description shall refer by numerals to the parts of such feeder as are already in use, and by reference letters to the novel parts which l have applied thereto; but as my invention is a small part of such feeder and practically an attachment thereto, I will only illustrate and describe so much of such a feeder as will enable those familiar therewith tok readily adapt and apply my invention thereto.

While- 1, show the invention as particulai-ly designed for use in connection with the Cross and-Dexter feeders Ido not wish to be restricted to its use in connection therewith for the invention may be usefully adapted for use in connection with other types of sheet feeding mechanism.

In the drawings-Figure 1 is a side elevation of parts of a printing press and an automatic sheetfeeding and tripping mechanism with rnyinvention applied thereto, showingthe parts in norma' working position. Fig. 2 is a plan view of the parts shown in Fig. 1, partly bi ken away and partly in section. Fig. 3 is .s view similar to 1 showing 'the parts in t pped position. .Fig 4 is a view similar to Fig. 1 partly broken away showing the normal operative positions of the parts. Fig. 5 is an enlarged view showing the normal ositions of parts when the paper is being ed by rollers 103 and 105. "Fig-6 is a similar view iowing the second position of the cam, and means for keeping ,the roller 105 from contacting with roller 1-03 when the parts are in normal working operation and the sheet is properly presented. Fig. 7 is a similar view showing the position of the cam when the parts are tripped. Figs. 8 and 9 are detail views of the catch and latch lever. Figs. 10 and 11 are detail views of the devices for locking rolls 98 in raised position.

Fig. 12 is an enlarged detail view of the detector and trip actuating devices. Fig. 13 is a reverse view of Fig. 12. Fig. 14 is a vertical sectional view of Fig. 12. Figs. 1-5 and 16 are enlarged detail sectional views of the eomber controlling devices, showing same in diiierent positions. Fig. 17 is a detail plan view of Fig. 16.

In the drawings 1 designates a feed table on which the sheets of paper-,S are fed forward to the impression cylinder'la. Above this table adjacent the feed cylinder is a rocking shaft 5b; to said shaft 5b is attached a segment 5z and onthe shaft is a.

loose arm 5, beside the segment 5, to which arm 5s is connected one end of a rod 5f that is pivotally connect-ed at its forward end to a pivoted lever 49b which is oscillated by a cam 49a attached to a driven shaft 49 (see Paten-t 812,260) by which arm 5s will be Il l? A', enel lorlh l Il 'll'.l el releeli; am ,l s

with erm 53S unless pre 5 etwhecl dependl zfleliecter hgere 5* are normally rest upon fil feel forward upon the het 1s: any sheet is not in positionv *l by the Cylinder grippers el Athe @e the enel of Aehe detector lngere l lele holes 1l in the metal plete or strip l*A on the eetl of le-ole 1 enel will arrest the eleef'e enel erm 5*, end prevent the letter erm re'lgurnug when erm 5S moves heelzwercl -zmcl therefore pin 5" wllfleee effe erm 5* eufl pam-vl 5d will thereupon me hote engagement with segment 5 the leerer will thereupon he l'novecl With erm 5S rocking ehe'ls 5b thereby eeusl 'the lille llamarle-of? (le'veee hy meelw l h, if; l l; centrole the u'lpph'd @lewe e" *rfll eulomeleally rm 5*' erm 5 roc-,lee

l; el enel tripping reel e here; poellzoe meel rellrhed Der 'ml per hed hy means el e,

erl e2 strong on he helm/eeh ,e Stop o3 ellieehed. lo `lhe :mel eoller on.

the roel, eee F l e The sheets of peper S ere feel forwercl lie the usuel manner hy ineens of ehe rollers 9o mil end 103 mild 105 (eee ehem 12,260) *he 'heft elf rollers 95 end 103 l l henem leeerlhed in ,260, so as to feed the l just before they reach when the rollers 105 until after the sheets prefs; lout the rollers 11 e pertialreverse ro el W flown the shee 'lle point of (le 'e show-n Avo wlwjfh le connecthel herhimlly eeluetefgl rellers The l l, f lever 9 wollen r4 We rd l rollere o* e, g'rippers A o this lever il weed. or exten@ 'lfli'v'omlly attach lelie illeal Wzl-th mroller e" n engel,"- l hy e lug h eide 01": 'elle eem 9 el; the' me ment that "ehe erppers; would eloee 'epen th-l; .v ly :The o. end el' 32- s provided 1; il l e lower tooth "2 me l l lo engege tl'wf- L' lege' c5 olf e slee-leo g1, er eelxeh c lop* e stud 6^ to one lof zal. eompolmfl le pvo'teol et d on the mme-wheh erm el flied Catch c is normally held m 'dep'feseerl 1 tion, Fig. 1 hy meen@ of e, roel e p volell l the erm d enel having its lower end Aemr m'zo @guide e2 attached lne the frame; e4 l the lower end of rod e le n elxehecl ee eho'w e enel this notch ie thermally engaged hy the pointed end a5 of rofl e whleh also emterefl lele the guide e2 el, u ll; s te the rofl,

eprlng e swung oe. r" e helzlzveen tlm elle roel, Sp1.

" e ele lever mall ehe jgglelipY lng' moverme leerer lire esem a eem eomee eppoi' 'time the leteh lever hl? posillon.

le the ordino; n eelleruetol'l the leefler the rolle 105 and rollers 103 ere slowed leven lue-fore the sheet reeelee the delivery7V f lzion and are reisefl before the rollers 1U? reversed and until the Sheet heeheeh ml hy the cylinder grippere. (lr L l misplaced and the tripping eretee heee rollers 105 will In my invenlon 1 utilize roller"-Y lo poll heck the sheet in ene@ mie; al@ immediately following the l1 pphg oli' the feeding mechanism, and for this purpoee provide leem 9 with e sho-rl dwell or recess 9@ which comes opposite the roller 9b just before the moment that the grppers would. ordinarily seize e sheet, and just after the moment that the feeder would be tripped by ille detector fingers 5m if they had been a1-- reeted es above deeerll ed. In such case the 01' le eel: l to release rod e `i311 .loller ll e lever .nml

Wfl r A `1 eeeeurfle 1e m eh :lietewrl in cam 9C.

whereupon spring e3 throws rod e and arm d upward and thus prevents the engaging of catch a with the tooth b just at the instant that the notch 9e comes opposite roller 9b; consequently spring d throws lever 9 1nward untilv roller 9b passes notch 9e| and momentarily lowers rollers 105 into contact with rollers 103 which latter rollers are at that moment being rotated in areverse d1- rection as above described and consequently the misplaced sheet is momentarily nipped by rollers 103 and 105 and is quickly moved or jerked back, away from feeding position, so that the cylinder grippers will not catch any part of the sheet. This action takes place very rapidly but is most eiiicient in practice in preventing any part of the misplaced sheetbeing caught and carried into the press. It sometimes happens that a sheet is damaged or torn at one side on its leading edge so that the detectors 5" at that point will cause tripping but the other portions of the sheet may be projected sufficiently into the path of the grippers to be caught thereby or a sheet might be slightly misplaced and lie at such an angle that part of it would be caught by the grippers,-but by having the Sheet drawn backward away from the feeding position simultaneously with the tripping operation the danger of such sheet being caught by the cylinder grippers, with the resulting annoyance and delay caused by the carriage of a partial sheet into the press is obviated.-

In the normal operation of the machine so long as sheets are properly fed to the cylinder, the latch-lever b2 is locked by tooth b to the tooth c5 of catch e at the moment dwell 9e in cam 9c comes opposite roller 9", by reason of lug btwhich then momentarily engages roller b3, (see Fig. 6) and consequently spng 10C1 cannot at that moment throw lever 9 outward because the latch lever b2 then prevents it although as soon as cam luv b4 asses roller b3 catch lever b2 drops sufficiently to lower tooth b5 clear of catch c5 and leaves lever 9 free to be operated by spring 101 under control of cam 9. But when the parts are tripped by the rocking shaft 5b as above described, rod a rcleases rod e and arm d is thrown upward by rod e, thereby preventing the engaging of catch c with tooth b5 of the latch lever just in time to permit roller 9bto enter dwell 9c Consequently although the lug b4 is then upholding latch-lever b2, the latchlever is not locked to anything, and can be freely moved under the action of the spring l()d and lever 9.

The linger vl normally rests upon the upper end of a lever lX which is fulcrumed on a stud z below shaft d (see Figs. -17).; said lever has a roller 1z on its lower end engaging a cam 49x on shaft 49. When the parts are tripped (Fig. arm (Z rises until fin- 'RiA feeder remains tripped and the fee er may be again put into operation by hand lever d". All of the foregoing parts' are parts of the Cross feeder.

1n tbe interval following the falling of finger i and its catching in notch on lever x (Fig. 16) the sheet is pulled back by rollers 105 and 103, as already described. After finger z' has fallen into notch in lever x (Fig. 16) then arm d rises and the lower lip c of catch c is raised; and as soon as roller 9b runs out of dwell btb-thereby7 giving a slight inward movement to the lever d, and the latch lever b2, the tooth b of lever b2 becomes locked with the lip c of catch c and will prevent roller 9b again, engaging the dwell b until the` parts have been reset# and there is another tripping operation of the shaft 5b.

To the shaft is connected a lever `6 which is provided with a roller 6a adapted to engage a cam 6b on shaft 49 whereby shaft 100 is rocked at the proper times to raise and lower rollers 98 over rollers 95. In order to lock rollers 98 in raised position so as to prevent feeding of a sheet when.the parts are tripped, I provide lever 6 with a pin f, which may be an extension of the pin upn which roller 6a is journaled. Beside this lever 6 I locate a sliding block g provided with a lug g' adapted to come under the pin f when the parts are tripped and lever 6 raised, and thus hold the rollers 98 elevated. The block vg is pressed by a spring g2 adapted to move it, when permitted, to bring lug g under pin f, see 2. The slide g also hasa projectionggB which is adapted to be engaged by a dog (Z3 pivoted to an arm Z2 of the compound lever d. llhen the parts are in working posit-ion, F 1, this dog (Z3 engages the projection (/3 on the slide g and forcesand holds the slide in retracted positiomso that the lug g is out of position to engage pin f and therefore will not interfere with the proper operation of the shaft 100 and rollers 98.

lVhen the parts are tripped by the actuation of the shaft 5b, as above described, and rod a. disengages rod e, the lever d is rocked upward by spring e3 as described, and dog (Z3 is moved out of the way of projection g3 and spring g2 moves the slide g so as to bring lug g under pin f.

A lever 8 is pivoted at 8a below lever cl .ig'evices for detecting a misplaced or defective sheet, means for rotating one set ofl rollers alternately in'y opposite directions, means for raising and `lowering the opposed set of rollers comprising a cam, a pivoted lever and connections, said cam having a short. dwell for momentarily bringing the rollers into contact when the feeding mechanism is tripped; a latch lever connected with the roller-actuating lever, a catch for normally engaging said latch lever to pre- :fentyoperation of said dwell 4except when the detector mechanism finds a defective sheet-` a tripping rod controlled by the detector mechanism, a rocking lever carrying said catch, a spring actuated rod for vibrating said lever, said tripping rod engaging ,said spring actuated rod, substantially as described.

4. In Y- automatic paper feeding mechanism, the combination of a set of paper feeding rollers, means for rotating the lower rollers alternately in opposite directions,

means for raising and lowering the upper rollers comprising a pivoted lever and connections, and a cam for operating said lever,

and devices adapted tol detect a misplaced or actuated slide adapted to engagesaid leverA to prevent closing of the said rollers when the mechanism is tripped; with means 'for momentarily bringing the rollers in the first set into contact when the detector mechanism operates, said means comprising a sh )rt dwell in the actuating cam for said rolle rs, a latch lever connected with the roller actuating lever, a catch for normally engaging said latch lever to prevent operation of saidrv dwell except when the detector mecha riism nds a defective sheet, and tripping mechanism controlled by the detector mechanism whereby said latch lever is released 'vhen the tripping mechanism is actuate In testimony that I claim the foregoing as my own, I aflx my signature in presence of two Witnesses.

I BURT F. UPI-IAM. Witnesses:

PERGY G. SHaw, HARRY J. WELIN,

Copies of this; patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washingtm, D. C.

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