US887314A - Sheet-feeding machine. - Google Patents

Description

No. 887,314. PATENTED MAY 12, 1908.

F. L. (moss.

SHEET FEEDING MACHINE.

APPLICATION FILED. APR.3. 1905.

3 SHEETS-SHEET l.

Q m4llllllllllmmmlum I Maj W WW Maw Mal-lag PATENTED MAY 12, 1308.

F, '13. mass. SHEET FEEDING ma ma.

' APPLICATION FILED APR. 3. 1905.

Q Iii/06L) lqwweeses:

No. 887,814. PATENTED MAY 12, 1 908.

P. L. (moss.

SHEET FEEDING MACHINE.

APPLICATION FILED APB. 3.1905 I 3 SHEETS-SHEET 8.

4 will] Elli r UNITED STATES PATENT. orrron.

FRANK L. ososs, or MYSTIC, CONNECTICUT, AssIeNor. TO oeoss PAPER .isnnnnn COMPANY,

or BOSTON, MASSACHUSETTS, A CORPORATION or MAINE.-

SHEET-FEEDING MACHINE} Specification of Letters Patent.

Patented Ma 12, 1908'.

Application filed April 3, 1905. Serial No. 253,649.

sheets intoposition to be acted upon at a high rate of speed and at the same time to deliver the sheets, accurately in position to be seized or acted. upon'by' the sheet-manipulating devices of the machine to Which they are being fed. For instance, in feeding sheets to aprinting pre'ssrunning at ahigh speed, it is necessary to advance the sheets to the front gages of the press at a high'rate of speed in order that the side register devices may have time to operate before the sheet-is seizedby the grippers of the press. If the sheets are brought against the front gages at full speed and the gages are relied upon to arrest the sheet in its proper position, it has been. found that either the front edge of the sheet will be crumpled and injured or the sheet will bound away from the front gages and not be to properly a and accurately position the sheets against the front gages, various mechanisms. and devices have been devised for slowing down thesheets just before thefront edge reaches thefront gages.

The present invention relates more especially to a sheet conveying mechanism whichv will act to advance the sheets at a high rate of speed until they are approximately in position and Wilhjthen act to slow down the sheet and bring it into position against the front gages when 'theisheetis either .approximately at' a state of rest or traveling at so slow a speed that it Will be properly positioned against the front gages. This sheet conveying mechanism 2 comprises sheet cone veying surfaces which are driven at a-comparatively high speed to rapidly advance the sheet until its front edge 1s near the front gages or nearly in the desired position, and

additional sheet conveying surfaces Whichtake the sheet While traveling-at the same In order surface speed and act to slow down the sheet after it has passed from the control of the.

high speed conveyingsurfaces to the control of the slowing-down surfaces. The sheet is under the control of one or the other or of both of the conveyers during the time it is being delivered and is therefore rapidly delivered and then slowed down Without dan- 'ger of getting the'sheet out of alinement. v During the greaterv part of the travel of the" sheet, it is underthe oontrol'of the high s eed conveying surfaces.

Just before the s ectreaches thefront gages the slowdown con-' During this interval the. slowdown surfaces have substantiallythe same speed as the high-speed surfaces. There *is no danger therefore, of displacin the sheet during its transfer from one set 0 conveying.

conveying surfaces and is under the control of the slow-down surfaces, the speed of'these' surfaces is gradually but rapidly retarded t0 slow down the sheet so that it, is accurately positioned at the front gages. 1

The high-speed conveying surfaces'maybe of any suitable form suchias rollers or ta for instance, and for the sake of simplicity and convenience of adjustment l preferto. employ sheet conveying rollers as the -high' speed conveying surfaces. The slow-down" surfaces .may also be of'various forms such as tapes, rollers, or segmentsfor-i'nstance; I i prefer however, to employ traveling bars as the slow-down conveying surfaces and to :arj-I range and operatethese bars in accordance vvithcertain further features of invention Whichwill be more fully explained;in oe" nection with the detailed description of the mechanism in which; I; have embodied my invention.

The variousfeatures of invention will, be understood from a detailed description-of the feeding mechanism shown in the accomanying drawings, which embodies all the eatures in the form in whichl prefer to em top of the ile of sheets to combing devices by which t e top sheets'are separated and fed to delivery rolls.

The sheet separating mechanism and the means for controlling it so as to present individual sheets in succession to the delivery rolls may be of any suitable construction, such for instance-as shown in Patent No.

6ll0702 January 7, 1902, and the delivery rolls may be operated in any suitable manner, as for instance, as in the construction shown in said patent.

In the drawings the lower delivery roll to which the sheets are presented by the sheet separating devices, is indicated at C. The sheets separated from the pile on the table A are advanced'by the delivery rolls and by a series of tapes D extending from the .rpll 0 around a second tape-roll or drum-C, The tape-drum C is mounted at the front end of l :a frame B pivoted to the side frames of the verse rod'b feeder and supported at its front end by feet B which rest upon the feed-board of the press. The sheets as they are carried alon by the tapes I) pass between the drum C" an presser rolls C arranged to bear upon the sheets above the drum 0 and thus insure their onward movement. The presser rolls are mounted in arms 0 pivoted to collars 0 which are adjustably secured upon a trans- The collars a may be adjusted on the rod 5 to bring the pressure rolls into the desired position with relation to the tapes and tape roller. The tapes D deliver the sheets on to a series of supporting bars E and into the control of the delivery rollers F.

The sheet is pressed against the delivery roll-- ers F by cooperating pressure rollers F which rest upon the delivery rollers. The rollers F are mounted in arm F pivoted to collars F which are adj ustably secured upon a transverse rod F. .These rollers are supported by enga ement with the delivery rollers F and are driven by frictional engagement with such rollers or with the sheets passing between them. i a Thedelivery rollers F are driven at the same surface s eed as the ta es D and while the sheet is in t e control of t '16 delivery rollers F it is rapidly advanced over the barsE toward the front gages G of the press; The

- sheet remains in the control of the delivery rollers F until the front edge of thesheetis seas 14- bars lil arranged below the path pf the sheet and adapted to be brought into engagement with cooperating pressure rollers H which are connected with the pressure rollers F. The bars l-l extend in the direction of movement of the sheet parallel to the supporting bars E and during the action of the delivery rollers F upon the sheet these bars H remain in positionwith their upper surfaces some what below the upper surfaces of the bars E and out of contact with the rollers l-l. Asthefront edge of the sheet nears the front gages G the bars H are raised and at the same time moved forward with a surface speed substantially the same as the surface s eed of the rollers F and of the sheet. As t e bars rise they engage the under surface of the sheet, and press the sheet against the rollers H so that the sheet is brought into the control of the moving surfaces of the bars and the cooperating pressure rolls H. At the time the sheet is thus brought into the control of the bars H and cooperating rolls H, the bars are traveling at the same speed as the delivery rolls F which are also acting upon the sheet and there will therefore be no danger of swinging the sheet out of alinement even if one of the bars should engage its cooperating pressure roller slightly in advance of the engagement of the other bar with its pressure roller, nor will there be any danger of such displacing of the sheet due to any unequal slip of the pressure rolls H as they begin to cooperate with the corresponding bars. The continued upward movement of the bars H lifts the pressure rollers F away fromthe delivery rollers F so that the delivery rollers F cease to act upon or'control the movements of the sheet. After the sheet has been thus transferred from the control of the delivery rollers F to the conwhich the sheet may be rapidly slowed down, i and positioned at the front gages. The accurate positioning of the sheet against the front gages may be further insured by so operating the, bars H thatthey continue to I I move forward after the rear edge of the sheet the nponmerely to insure the engagement of the has passed from between the rollers H and ar's H. This continued movement of the bars maybe utilized to give the final for ward movement to the sheet in bringingfit' against the front gages or may be depended front edge of the sheetwith the gages in case of imperfect action ofl the slow-down surfaces in positioning the. sheet. In operating upon 'large sheets, bars H,-in addition tothose which-cotiperate. with the ressure rolls. H, I

, "ends of'the bars.

H -are' rovide'd with downwardly projecting may be employed, the additionalbars being 5 connected to move with the bars which 0 operate with the pressurerolls and forming a part of the traveling sheet support; The bars H are supported and operated from'two transverserods h, h arrangedatw'o. posite The rear ends of the bars arms I 2 by which they are secured to the transverse rod -h In order that the bars may be readily removed or adjusted the arms H are provided with'j aws embracing the rod h and with set screws H for clamping the i'aws to the rod. The rod'h is ralsed and owered-to carry the bars H toward and away "fromthe pressure rollers-H and is alsomoved forward-and back to give'the bars H advanc ing movements and to return them to normal position. The front ends of the bars-H rest upon the rod h and'tbisrod is raised and lowered' in uni'son with the rod h to co- "h in which the opposite ends of the rod' h" operate therewith in raising and lowering the 'bars H, the bars sliding backward and forwa'rd over the rods h as they are advanced and retracted.

' The rod'k is raised and lowered to move the bars H toward and from the-pressure rolls by means of arms it provided with slots are mounted. These arms h are secured to a rock shaft h which is rocked at proper in-' tervals. The rod h is mounted in arms h secured to a rock shaft h which is rocked in unisonwith the rock shaft it through a link h" connecting arms 71, and h secured to the shafts 'h and h -re'sp'ectively. The rock shaft h is rocked at proper intervalsb the action of acam h secured to a sha t h "whichjmakes one revolution for each sheet fed to "the machine: The connections between the cam k and the rock shaft h con- --sist of'a l'ever'h one end of which engagesthe cam and the other end of which is conneot'ed bya link In, with an arm-h secured to the rock shaft.

' i The-rod h is operated to give the advance and; return movements to the bars H by fandrock shaft h arefiio er'ated atproper inmeans oftwoarms It secured to op osite endsof a rock shaft h and provide slots 7:, engagingtherod h'. The arms h tervals by the action-o a-cam h" securedto thei'shaf-th The connections between this with rear ed e'of the sheet has pas eath is e pressure rolls.-

shaft and the arms h" and rock shaft 71 consists of a lever it? connected hyiineans 10f a link h with one of-thearmshi. ,.The cams hl and hi are-so@fOrmedQanrl timed that the rod, hmandsbars be moving at the same spee.d;-:-,as ;(;l eli-'ver-y roller F landithe sheetriihen; the bars; IL en gage the c015v erating pressure roll ers Hf cam h" is al o so' shaped thatwhelithe-b'ars lzstart forward as'the rods h hi are raiser :and (will:

The

H havebeen raised to their highest position 1 and while they are maintained -ini-this position', the s eed with which the bars are. advanced wi l be quickly retardedjuntil -the bars are at rest. The camg willthenyaet to lower the rods h h and Tthe.,ba-i'sihig.latter; which the cam h will retract the rod hand the bar H to return thempto normal osition.

This construction of sup ortingcanc operating mechanism for the arstH-senahles the bars to be-readily and conveniently intro-"1;.

duced orremoved from the machine,; and

also enables the readyfadjustment-pt the bars to suit any width of sheet; lt-sals'ogen ables additional bars to be readilylinserted or removed as occasion requires. Thevshaft;

on which the delivery rollers are sev cured and the rod F 4 to which-the; ressure rollers are connected, are-mounted in racket-s F which maybe adjusted towarcl -onfrom the front gages in order to :bringlthe delivery rollers and the pressure rollers intoaproper relation to thefront gages in accordance with.

the size of the sheet: beingactednupont The mechanism fordrivi'ng thedelivery rollers F atn the same surface'speed aszthe L tapes D com rises ashaft extending along the line of a 'ustment oft-the rollers' toward and from the, rent gages andcon-neqtedwith "the roller shaft by means of spiral-gears f, f mounted on theshafts f and ftrespec-im tively. The s iral gear f is: conneelteduwith thershaft so t "at itrevolves with the shaft,

while being free" to slidei-therebn. flSti'il'lB delii Very rollers are adj ustedi iZONELI'dzOI from the front ages. tape rum C through a series-of spur gears f and spiral gears f oneofj which is secured gpars fl-and' the other ofawhieh I t The shaftf is driven from the:

sheet comes to the front-gages. slightly be fore the sheet reaches thispo iti m 2 The: delivery rollers F willtherefore act upongthe and the bars H will act upon -the:.-rear partof edg'e comes to the front gages; thetadvance movement of the bars continuing afterd'the sedfr be- "sheet through the greater par t gof its:;length 1 the sheet to quickly slow it Trl wn-asfthefront The 2 specific; form of the sheet conveying surfaces employed in practicing the invention may be varied as desired and the details of construction and arrangement and of the operating mechanisms may also be varied,

withoutdeparting from the'invention.

With'out attempting to specify the variations and modifications which may be made,

' what I claim and desire to secure byLetters Patent is r 1. A sheet conveying mechanism having in combination'high speed sheet conveying surfaces for advancing the sheet, slow-down conveyingsurfaces, and mechanism operatively connected to give the slowdown surfaces substantially the same speed as the highspeed surfaces as they come into action and a retarded speed after the sheet has assed from control of thelhigh speed suraces.

2.' Asheet conveying mechanism having in'combination high speed sheet conveying surfaces for advancing the sheet, slow-down conveying surfaces, mechanism operatlvely connects -to ive the slow-down surfaces substantially t e samespeed as the high speed surfaces and then retard said speed, and means for transferring the sheet from the control of the high speed surfaces to the control of the slow-down surfaces when both have substantially the same speed.

3. A sheet conveyingmechanism having incombination high speed sheet conveying surfaces for. advancing thelsheet, slowedown conveying surfaces and mechanism operatively connected to give the slow-down surfaces substantially the same speed as the high speed surfaces ,and. then retard the speed, and mechanism connected-to operate 13 e slow-down surfaces to transfer the, sheet from the control ofthe high speed'surfaces to the control of the slow-down surface when both have substantially the same speed.

4. A sheetconveying mechanism having in combination high speed sheet conveying surfaces, slow-down conveying surfaces,

cooperating rollers for holding the sheet against said surfaces, and mechanismfor;

o crating the slowdown surfaces to press t e sheet against the cooperating rollers and release the .hold of the rollerscooperatmg 1 with the high speed surfaces.

I 5. A sheet conveying mechanism havingv in combination high speed sheetfconveying surfaces, slow-down; conveylng surfaces,

cooperating rollers for holding the sheet' against said surfaces, mechanism forgiving the slow=down surfaces substantially the same speed as the high speed surfaces and then retarding the speed, and mechanism for o crating the slow-down surfaces to press t e sheet against the cooperating rollers and release the hold of the rollers cooperating withfthe high-speed surfaces whenboth in combination hig then slow down the sheet.

9.. A sheet conve ingmechanism having surfaces to the conveying surfaces are moving at substantially the same speed,

6. A sheet convenng mechanism-having in combination ,hig speed conveying sur faces, slow-down conveying surfaces, ressure rollers for cooperating with the igh speed surf-aces, connected pressure rollers for cooperating with the slow-down surfaces,

ing rollers to transfer the sheet from the con trol of the high speed surfaces to the control of the slow-down surfaces.

7. A sheet conveying mechanism having faces, slow-down conveying surfaces, pressure rollers for cooperating with the high speed surfaces, connected pressure rollers for coo crating with the slow-down surfaces, mec anism for giving the slow-down surfaces substantia y the same speed as the high speed surfaces and then retarding the speed, and mechanism for moving the slowdown surfaces towards and away from the speed conveying surmechanism for moving the slow-down surfaces towards and away from the cooperat cooperating rollers to transfer the sheet from Y the control of the high speed surfaces to the control of the slow-down surfaces when both conveying surfaces are moving at substantially the same speed.

8. A rheet conve mg mechanism havingin combination hig s eed conveying surfaces for acting upon tiie sheet through the reater part of its length, slo'w-downsuraces, mechanism forgiving said surfaces substantially the same speed as the high speed surfaces and',-,then a retarded speed,

and-means for transferring the rear. part of the sheet from the control of the high speed surfaces to thecontrol of the slow-downswfaces-when both are moving atsubstantially the same, speed.

10.. A sh et conveying mechanism having in combination sheet conveying surfaces driven at a constant speed, sheet conveying surfaces driven at a varlable speed, and mechanism for transferrin the rear part of the sheet from the contro of the constant'speed 7 surfaces, t 11. A sheet conveying mechanism, having, in combination, high speed sheet conveying surfaces, sheet engaging means includin slow down conveying surfaces and sheet sup- ,portingfldevices moving therewith, rollers-for control of the variable speed ,l

holding the sheet against the slow down surfaces of said means, and mechanism for continuing the movement of the sheet supporting devices of said means after the sheet has passed the rollers.

rollers and to give the bars a variable forward movement and a return movement. V

'14. A sheet conveying me chanismhaving in combination sheet conveying surfaces, bars arranged below the path of the sheet, rollers arranged. to cooperate with said bars, and.

mechanism connected to move said bars vertically and to advance and retract the bars.

15. 'A sheet conveying mechanism having in combination sheet conveying surfaces driven at a constant speed, bars arranged below the ath of the sheet, connected rollers arrange to cooperate with the sheet conveying surfaces and the bars, mechanism connected to move the bars verticallyand to ad vance said bars with a variable speed and to retract the bars.

16. A sheet conveying mechanism having 3 in combination, sheet conveying surfaces,

bars arranged below the path of the sheet,

mechanism connected to move the bars vert'ically to advance and retract the bars, rollers arranged to cooperate with the bars when raised and to release the sheet before the advance of the bars is completed.

17. A sheet conveying mechanism having in combination,- sheet conveying surfaces' driven at a constant speed, bars arranged below the path of the sheets, mechanism connected to move'thebars vertically, to advan'ce the bars with a variable speed andto rollers, mechanism conbars are secured.

retract the bars, rollers arranged to cooperate with the bars when raised and to release the sheet before the advance of the bars is completed.

18. A sheet conveying mechanism having in combination delivery rollers, cooperating pressure rollers, connected pressure rollers,

sheet conveying surfaces arranged to e06 erate with said connected rollers, and'mec anism for 0 crating said surfaces to press the rear part of the sheet against the connected rollers. 1

19. A sheet conveying mechanism having in combination. delivery rollers, cooperating pressure rollers, connected pressure rollers,

sheet conveying surfaces arranged below the path of the sheet in position to cooperate with. said connected rollers, mechanism for bringing said surfaces into engagement with 7 said connected rollers'and advancing said surfaces at a varlable. speed.

20. A sheet conveying mechanism having in combination del very rollers, .bars a? ranged below the path of the sheets, connected pressure rol er'sco'operating with the delivery rollers and bars, and mechanism connectedto move the bars vertically and to advance and retract the bars. j 21. A sheet conveying mechanism having in combination, bars arranged below, i path of the'sheet, transverse rods carrying said bars, devices-forsecuring the bars 'tb one of'said rods, and mechanism connected to raise and lower said rods and to advance and retract the rod to which the bars are secured.

22. A sheet conveying mechanisin having in combination bars arranged below the path of the sheets,transv erse rods Carrying said bars, devices for detachably' securing the bars to one of said rods, and mechanism connected to raise and lower the rods and to advance and retract the rod to which the In testimony whereof I have afiixed' signature, in presence of two witnesses,

' F ANK, L. enofss.

Witnesses. 1

IRA L. Frsrr, KATHARINE A. DUGAN.

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