US929538A - Rotary printing-press. - Google Patents

Description

H. M. BARBER. V ROTARY PRINTING PRESS.

APPLICATION FILED JAN. 19, 1907.

Patented July 27, 1909.

3 SHEETS-SHEET 1.

H. M. BARBER.

ROTARY PRINTING, PRESS.

APPLICATION FILED JAN.19. 1907.

3 SHEETS-SHEET 2.

929,538, v Patented July 27 1909.

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ROTARY PRINTING PRESS.

APPLICATION FILED JAN. 19, 1907.

929,538, Patented July27,1909.

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HOWARD M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR TO C. B. COT'IRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

ROTARY PRINTING-PRESS.

Specification of Letters Patent.

Patented July 27, 1909.

Original application filed November 24, 1906, Serial No. 344,929. Divided and this application filed January 19,

' 1907. Serial No. 353,027.

To all whom "it may concern:

Be it known that I, HOWARD M. BARBER, a citizen of the United States, and resident of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Rotary Printing-Presses, of which the following is a specification.

This invention relates to improvements in rotary printing presses and has more par ticularly for its object to provide certain improvements in the construction, form and operation of the several parts of a sheet feeding and cutting mechanism.

My invention consists broadly in a sheet feeding and cutting mechanism comprising rotary cutters and feeding pulleys surrounding the cutters.

In the accompanying drawings, Figure 1 represents in detail vertical section so much of a sheet feed rotary printing press as will give a clear understanding of the location of my improved sheet feeding and cutting mechanism with reference. to the other parts of the press. Fig. 2 is anenlarged detail View partially broken away, in side elevation of the sheet feeding and cutting mechanism, Fig. 3 is a transverse section-taken in the plane of the line 3', 3, of Fig. 2, looking in the direction of the arrows, and Fig. 4 is,

a horizontal section taken in the plane of the line 4, 4, of Fig. 2, looking in the direction of the arrows.

The side frames of the machine are denoted by 10 and 11. A feeding board 12 is provided in position to feed sheets therefrom' between the first plate and impression cylinders 13, 14 of the rotary printing press. The second plate and impression cylinders of the press are denoted by 15,16. The .respective shafts of these four cylinders are denoted by 17, 18, 19, 20. Feeding pulleys 21 are fixed to a shaft 22 and located in position to feed the sheets downwardly between fixed guides 23, 24, into engagement with the feeding pulleys 25, 26, carried by the shafts 27, 28.

The set of grippers on the first impression cylinder 14 are denoted by 29 and they are arranged to receive the sheets from the feeding board 12 and transfer them one at a time to the set of grippers 30 or 30* on the second impression cylinder 16. The setof grippers 30 or 30* is arranged to release the These rotary cutters are of the well known Cottrell type having their shafts 33, 34, at a slight inclination off a plane at right angles to the plane of travel of the sheet, whereby a shearing cut is imparted to the sheet at exactly right angles to its travel.

Coacting feeding pulleys 35, 36, surround the cutters 31, 32, the hubs 37, 38 of which pulleys are loosely mounted on hollow bosses 39, 40 of stationary spiders 41,- supported from the side frames 10,11, by brackets 42. There are two of the pulleys 35 and two of the pulleys 36 shown herein, one pair being at each end of the rotary cutters in position to engagethe oppositeedges of the sheet as it passes between the cutters. The shafts 33, 34, of the cutters pass through the hollow bosses 39, 40 of the spiders 41, thus permitting the axes of the feeding pulleys to be exactly at right angles to the travel of the sheet irrespective of the angular deflection of the said cutter shafts 33, 34. All of the pulleys 35, 36, are cut away as shown at 43, in line with the blades of the cutters so as to permit the cutters to engage the sheets from edge to edge thereof.

The sheets as they pass from between the rotary cutters are fed between stationary guides 44, 45, down into position to be ;en gaged successively by the sets of grippers 46, 47, of the collecting cylinder 48, the shaft of which is denoted by 49. Rollers 50 mounted on a shaft-51 are arranged in position to cause the advance edges of the sheets to be engaged by their respective sets of grippers. 7

A delivery cylinder 52 is mounted on a shaft 53 and is provided with three sets of grippers 54, 55, 56, arranged to successively receive a collected group of sheets from the two sets of grippers 46,47 on the collecting cylinder 48.

The spur gear 69 on the rotary cutter shaft 34 of the sheet feeding and cutting Y mechanism-. is driven: from-any1 suitable? source at the desired speed. This spur gear 69: meshes withfa spur gear 701011 .the rotary cutter shaft33zz- These-cutter shafts are also provided with intermeshing gears 71, 7 2,

73, 74. The sheet feeding pu-lleys-ofthethe rotary cuttershaft 33, whereby the said feeding pulleys; aredriven at the same sur fafce speed as the cutters.

Pressure rollers 128 are arranged inposition to hold the sheets on the peripherywof; the collecting cylinder as each-.sheet -ap proachesthe guides Kid-, flf), to permit the grippersto opeirtoreceive a secondsheet;

'In' operation, the sheets; are fed one at a time fromthe feedingboard 12 into position ;to have their advanceedges engaged by the grippers 29--on the first impression cylinderj The. sheet is thennpassed between the cylinder Where it'- is printedyupon one side,

grippers 30,- 30" '=on the second impression cylinder.- The sheet is thenpassed between the second impression; cylinder and the second platecyli-nder and thusprin'ted on its opposite side, The grippers 30 or 30*-then; release the advance edge {of-the sheet-after the sheet has been engaged by the feedin rollers 21 which feeding rollers --Will fee 1 the sheetndown betweemthe guides 23,-2et, into engagement with thefeeding rollers 25,, 26, These last named feeding rollers Will; feed the sheet-into} positionto be engaged bythe feeding pulleys- 35, 36; of the cutting mechanism. The rotary cu'ttersqwi-ll then seven each" sheet* transverselydnto smaller sheetsythe -feedin-g-;pul-leys- 35', 36, serving to insure the positive-'feed-of, the sheets at the predetermined speed ofthe cutters. The arrangement ,of the parts; is such that one of the sets of grippers 46,47 of the collecting cylinder 48- Will engage the advance edge of the sheet before the first cut of the cutter isaccomplishedfi The arrangementcf camsis such tha-t each of the sets of grippers: 46,- 47, will collect two subdivided shee'tsfed from the cutting mechanism and Will then transfer such collected group of sheets to one of thesets-of grippers 54, 55, 56 of the deli-very cylinder.-

The parts shown and described but-not claimed herein formthe subject-matter of my copending application 1 filed November 24, 1906, Serial No. 344,929, entitled rotary printing presses-,-. of which application; the present applicationis a division What I claim is:

7 arranged to first impresslon 1 cylinder and the first plate 1,: A sheet feeding andcut-ting mechanism com-prising a pair of coacting rotary cutters arranged ito divide the sheet transversely and feeding pulleys .surroundingithe cutters and independent thereof;

2. A 'she'etfeeding and cutting mechanism comprising a pair of coacting rotary cutters arrangedto divide the sheet transversely and feeding pulleys. arranged in pairs, surround ing the cutters and independent thereof.

3. A sheet feedlng and cutting mechanism comprising a pair of coactingrotary cutters arranged .to dividewthe sheet transversely and sheet feedmgpulleys arranged III'PQLII'S, surrounding the ends" of. the cutters and independent thereof for-engaging the side edges 'of the sheet."

- lf A sheet feeding and cutting mechanism comprising a pair ofcoacting rotary cutters arranged to divide the, sheet transversely and sectional-feeding pulleys surrounding the cutters and independent thereof.

5. A sheet feeding and cutting mechanism; comprising a air of coacting rotary cutters divide the sheet transversely and sectional. sheet; feiedinlg pulleys arranged in pair's, surrounding the cutters 7 and inde- Th'e grippers 29 -then transfer the advance edge of the sheettoone of the-two setsof pendent thereofr '6. A sheet feeding and cutting mechanismcomprising a pair of coacting rotary cutters arranged to ivide thec-sheet transversely and sectionalfeeding pulleys arranged-in pairsandsurroundingfthe ends of the cutte'rsand independent thereof for 'engagnrg the side edges of the sheet.-"

'; 7 A sheet ifeedin-gand cutting mechanism comprising rotary-cutters.- having their axes at a slight inclination off {a plane right angles; totheplane :of travelfof thesheet and feeding pulleys surrounding and independent ,of the cuttersand having their axes parallel with the line of cut.

85A sheet'feeding and cutting -mecha nis1n comprising rotary cutters gearedtogether and feeding pulleys surrounding the cutters also geared to ether.

' 93A sheet-feeding and cutting mechanism comprisingrotarycutters geared together: and feeding pulleys surrounding the cutters also geared together and driven by the-cutter 'earw IOJ-A-sheet feeding and cutting mechan isin-;-c0mprising rotary cutters geared together, feeding pulleys surrounding the cutte'rsg, also geared together,- pulley supports and; a rotaryshaft mounted inthe supports having drivingge ars-fo'ruthe feeding pulleys and a geardrivenq-froma cutter gearw mounted in the supports having driving extended obliquely through the bosses and gears for the feeding pulleys and a gear pairs of feeding pulleys mounted on the driven from a cutter gear. bosses and surrounding the cutters. 15

12. A sheet feeding and cutting mechan- In testimony, that I claim the foregoing 5 ism comprising pulley supports having holas my invention, I have signed my name in low bosses, rotary cutters having their shafts presence of two Witnesses, this 17th day of extended through the bosses and pairs of January 1907; feeding pulleys mounted on the bosses and surrounding the cutters. HOVARD BARBER 1o 13. A sheet feeding and cutting mechan- WVitnesses:

ism comprising pulley supports having hol- A. R. STILLMAN,

10W bosses, rotary cutters having their shafts G. BURDECK.

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