US1242908A - Rotary perfecting sheet-printing mechanism. - Google Patents

Description

H. M. BARBER.

Patented Oct. 16, 1917.

4 SHEETS-"SHEET I.

ROTARY PERFECTING SHEEY PRlNTING MECHANISM.

MPucmlon man 1AN.22. 1913.

H. M..BARBER. IROTARY PERFEC-'ING SHEEI PRINTING IIICHANISNI.

APPLICATION FILED JAN. 22, 913.

Patented Oct. 16, 1917.

4 SHEETS-SHEET 2.

H. M. BARBER. ROTARY PERFECTING SHEET FHINTNG MESHANISM.

AFPLICMION fiLED IAN. 22,1913

Patented Oct. 16, 1917.

4 SHEETS-SHEET 3.

H. M. BARBER. ROTARY PEHFECTING SHEE PRNTING MECHANISM.

APPLICAUON HLED }AN.22. I9l3.

Patent/Bd 0G13. 16, 1917.

4 sains-SHEET 4.

Win ensues.'-

65 inexistenteswere@ eviiider 4.

UNITED STATES 4PATENT OFFICE.

Bowser n. essere, or sroiiiiieroii.

coNNnoTIcUT, AssIeNon, BY MEsNE .fission- MENfTS, TQ C. B. COTTBELL 6p SONS COMPANY, QF NEW YQRK, N. Y-, A CORPORATION 0F DELAWARE.

Specification of `Letters Patent,

Patented Oot. 16., 1917,.

Apphrativn tiled January 22.. 19MB. Serin! No. 142.553.

To all whom it may concern.'

lie it, known that I, Howie M. BARBER, a citizen of the, United States end. resident of Stoniugtom in the county of New London and State of Connecticut, have invented :i new and useful Improvement in Rotary Perfecting Sheet-Printing Mechanism` of which the following is e specification.

The object of this invention is to prevent offsetting in rotary perfecting sheet printing machines and comprises novel means for preventing the offsetting of the first printed side of the sheet onto the seoond impression cylinder during the printing of the other side of the sheet; and also preventing the offsettingI of the perfected sheets on one enother in the delivery. This invention more particularly consists in providing Ineens whereby the second impression cylinder is caused toteke iirst e slip sheet and then a sheet printed on one side, carry the two through the second printing operation and iinall deliver the perfected sheet and the slip eet together.

` practical embodiment of my invention is represented in the accompanying drawingsa in which-.-

Figure l and Fig. 1 a is e view in Side elevation partly in section of so much of a rotary perfecting sheet printing machine es will `give a clear understanding of this present nventien,

Fig? 2 and Fig. 2 represents the seme 1n vertical section taken from .front to teer,

Fig. 3 represents the; drivin means for the; printing sheet feed; me einem, and

F1 i represen-.ts ,the 7riviiiii means for the 1p sheetfeediu mechanism..

T, eprinti `meereniisin ier' printing on the {ir-st sjdeo the she v t is herein shown es comprising; e gelate cylinder i end itsv impressionv eylixi r The printing ineehs nismfor yp-i'iliti upon the opposite .side of ,die sheetis heren siiown es @emmene a plurality of plate cylinders 3 and their mi printing sheets liist impressioneylinder 2 includes 5. The Ineens Yfor feedin theV ip sheets te the sieeond impression cy inder 4 includes the cylinder 6,

The portion of the .delivery mehanism which is shown herein inelndes the first delivery reel 7, vyhich coacts with the second 'llmeen for feeding the 'a feedin.cylinder :lieder "4 and. Athe mended@ Livery reel 8 whioh ooacts with the first delivery reel 7.

Means. are shown for feedin the sheets from the printing sheet feed te le 9, to, the sheet step 10 at the sheet feeding cylinder 5i, whioh menne oomprises the endless tape cnrriers 11, 12, the feedi-n rollers 13 and the drop rollers 14 errang to ooect with the rollers 13` at the proper intervals. A sheet stop 15 is also provided at the table 9, which sheet stop is cerried b the movable sup port 16 for the drop rol ers so that the sheet stop 15 is moved into and out of operative position es the drop rollers are moved out of and into operative osition. Similar means may e employed for feeding slip sheets from thefeed table 17 to the stop 1 Vet the slip sheet feeding cylinder 6, which means comprises the endless te eerriers 19. 20, the sheet stop 21, the eeding rollers 22 end the drop rollers 23 arranged toy eoect with the rollers 22.

While I` have described the printed sheets es being fed from the table 9, it is to be understood that the sheetslney he out and fed from a. roll, ii so desired..

The printing sheet feeding cylinder 5 is provided with n set of: grippers 24 which is arranged to take the sheets from the tape cerrier 11 end transfer them to the grippers 25 on the first impression cylinder 2.

-The sli sheetfeeding cylinder 6 is provided wit a. set of gri. pens 26 which 'is arranged to tek@ a slip s ret from the endless tape carrier 19 and transfer the Sheet to a setoi grippers 2.7 on the second impression cylinder 4e- The set oi. grippers 27 after it has taken the slip sheetfrom the set of grippers will take ai first side printed sheet rom'the serJ of grippers 25 on the rt impression cylinder2 and convey the two sheets with the slip sheet interposed between the `printed side of the printed sheet and .the ,@,Yimdf vMid eolivoy the two sheets beneath the. Ylite cylinders 3. The iirsr delivery reel is provided with a set of gri-pliers 2 8 arrarlgdte talee the perfected Sheet 4Midifile ill?-` et imm the set ef erinners- 27 and transfer the same to. the4 `pperse 95th@ second delivery reel 8i; vvivida delivery neel will deliver the sheets to the balance of the deliver mechanism, mitV shown herein.-

In the :alcool-n-l nyng drawings, I have shown the eylin ers 5, 2, 6, and 8 as each mended with eneiset `et ,grimms enelsthe feb cylinder 4fas providedwith three sets of g. Pf'lfI'S- 21, i,

' he movement of the sheet stop 10 is controlled by a cam and the movement of the sheet stop 18 is controlled by a cam l31.

A tumbler cam mechanism 32 is provided for ripening and closing the gri pers 24 of the printing sheet feeding cy inder 5 to transfer the sheet from itsfeeding tapes to the first impression cylinder 2. A fixed cam 33- is provided for openingthe grippers 25 to transfer the first side prmtedsheet to the second impression cylinder grippers and to holdthe said grippers `25 open to receive a succeeding printing sheet-from the feeding cylinder 5.j A tumbler cam mechanism 34 is provided for o ening and closing the grippers 26 of the s ip sheet feeding cylinder 6 to transfer a slip sheet from the tape carrier to the second impression cylinder.

A fixed cam 35 is arranged in position to open the grippers 27 to deliver a perfected sheet and a slip sheet together to the Erst delivery reel 7 and to keep the grippers open to receive a slip sheet from the cylinder 6. A fixed cam 36 is arranged in position to open the grippers 27 to receive a first side printed sheet from Lthe first impression cylinder'2. Pressure rollers 37 are arranged in position to keep the slip sheet in register while the grippers 27 are b ei'ng opened to receive a firstside rint'ed sheet fromthe first impression cylinder 2.

A lfixed cam 38 isprovided for openin the gripfpers 28 of the first delivery reel to trans er a perfected sheet and a s' ip sheet together to the second delivery reel 8 to kee the said grippers open to receive a succee ing pair of perfected and slip sheets from the rippers 27.

A 'Xed cani' 39 is provided for opening the grippe'rs 29 to receive the perfected and slip sheets from the reel 7 and deliverthe same.

The several cylinders and reels are driven vat the roper speeds with respect to one another` irugh the trains of gearing 41, 42, 43,44, 45, 46; 47 and 48. 4' ""The shaft 49 of the printing sheet feedifng cylinde'r has a driving connection with the Asheet feeding means through the train of g'ilaiig50, 51 52, 53, 54,55 56, `57, 58, 'che similarly die Shaft `59 of die Slip shea feeding cylinder G has a drivingconnection ,with its ,feeding means throu'gh the train of "gears sog-c1562, es, e4, e5, 6e,Y e7, es. ,'f'rhedrop rollers 14 and the sheet stop v15 are habrcnght i'ntb and out of operativeposittio'nby 'a cani 69,' "n the shaft 49 and its coneizg parts-an the drop rollers'23 and siie "Stop 21 are'rnoved into and out of their operativepositi'on by a cani 'mon theshaft f-gand itsjonnectiu parteV fea-1* -r. f5 f, l

fddpesfef Hummm :werbe detained fbr are 'dents escales :myli'nventioin AIfzhtive signed my 'presence of two' Witnesses, this four-t day ofJaiIary, A. D. 1913'.

While I haveshown a first printin .mechanism yirren'gedfto print one color." "Q" vaseoond printing' mechanism arrangedgtq print a plurality of colors, it is to be understood that I contem late using this invention in connection Witli single or multi-color Work, asdesired.

It will be seen that by introducing slip sheets between the second cylinder and the freshly printed side of the printed sheet as it comes from the first printin mechanism, the slip sheet will act as an o set sheet and will prevent the ink from the first side printed sheet from building up upon the top sheet ofthe make-ready 'on the second impression cylinder. It Will also be seen that this slip sheet by being delivered together With the perfected printed sheet serves to prevent ofi'- setting from one printed sheet onto another printed sheet in a pile.

It is evident that slight changes might be resorted to in the form, construction and arrangement of the several parts Without departing from the spirit and scope of my invention; hence I do not wish to limit myself strictly to the structure herein set forth, but

What I claim is 1. In a rotary perfecting sheet printing machine, printing mechanisms for printing on both sides of a sheet including first impression and4 plate cylinders and second impression and plate cylinders, a printingshe'et feeding cylinder arranged to feed a sheetto the first im ression cylinder and a slip sheet feeding cy ind'er arranged to feed a Ysli n sheet. directly to the second impression cyi inder, the first im ression cylinder being arranged to trans er the first side printed sheet to the second impression cylinder on top of the said slip sheet.

2. In a rotary perfectingsheet printing machine, printing mechanisms for printing on both sides of Va sheet including first and second impression cylinders, a printing sheet feeding cylinder arranged to feedsl sheet to the iirst impression cylinder and la slip sheet feedingcylinder arranged to feed a sheet to the second impression cylinder, the first ,im-

pression cylinder being arranged 'to' transfer i, the first side printed sheet tothe second imi pression 'cylinder on top of the said slip sheet, 'thesecond impression cylinder `heling arranged to carry the two sheets through the t''getlier. y

In testimony that I claim the foregoi'ng'a's Rhine in ses@ f j jj HQWARD BARBER-1:* Witnesses; "I 1 y S'rninMAN,

Washington, D.

seeondprnting operation and delivering@ y aaaresfngwne "*oeanrmteffeffrrassg if@

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