US1107556A - Slip-sheet machine for printing-presses. - Google Patents

Description

P. M. TURCK. SLIP SHEET MACHINE PoR PRINTING PRESSES.

ILPPLIOATION FILED NOV. 12, 1913. E @El @mo Patented Aug. 18, 19M.

2 SHEETS-SHEET 2.

iT STATES FREDERICK M. TURGK, OE NEW YORK, N. Y.

SLIP-SHEET MGHINE FOIE@ PRINTING-PRESSES.

Specification of Letters Patent.

Patent-ed Aug.. its, Miter.

- Application :tiled November 12, 1915. Serial En. $00,523.

and State of New York, have invented certain new and useful improvements in Slip Sheet Machines for Printing-Presses, of which the following is a specification.

The invention relates to improvements in slip-sheet machines for printing presses, in which the printed sheetsdelivered from the press are automatically received and separably held in transit by a folded slip-sheet web for a sufficient time to afford the necessary dryin action of the ink. Urdinarilyjn machines of this'class the fold'edslip-sheets and printed sheets are laid in Contact upon one another, and where the number of piled sheets and aggregate weight thereof are considerable, much difliculty is experienced both in effecting rapid drying and in the prevention of offset.

The objects 4of the present invention are to provide a slip-sheet web foldable in a zigzag manner into a series of sheet-support ing sections and cover sections, in which the several sections are so constructed as to normally present a' plane surface under working conditions, and after being bent over itself, in the act of unfolding, to possess sufficient elasticity to again assume its normal plane condition.

A further object provides for propelling the folded web sections in spaced relation with one another, for the .support of the printed sheets in transit, to effect a more rapid drying` action thereon and the prevention of odset. `'And the invention also includes means for unfolding the web sections for thel delivery of the dried sheets,.and for advancing and positioning the Yunfolded web to effect under the influence .of gravity an overfolding action of the sections thereof for the reception of the printed sheets.

in describing the invention in detail reference is had to the accompanying drawings, forming a part of this.A specification, and wherein like characters are used to designate corresponding parts throughout the several views, and `in which:

`l `ignre 1 is a side elevation of the. machine embodying the present invention, part-s thereof bein A4breken to indicate a contraction iny tie height thereof; Fig. Q. av ground plan of the same in which the slipsheet weh is indicated 4by broken lines; Fig.v i3 1s an enlarged detail perspective view' of the sections of the slip-sheet web; and Fig. l

is an edge View of Aa bent fr-agmental porn tion of the latter. i

In the drawings, numerals l and 2 designate respectively the front and rear main frames of the machine, connected in the usual manner'hy crossbraces. Fixed upon the interior of the opposite frames, are bearings 3, in which are rotatably, supported a double series of screw-conveyers 4 .and 5, having at theirlower ends bevel driving 'gears 6, engaged by corresponding gears i',

fixed to the shafts 8 and 9, which in turn aredriven from' vthe main crossshaft 10 b the double set of bevel gears 1l, the latter siaft being ournaled in the main fra-mes and provider with the power pulleyl, all more clearly indicated in Fig. 2. Also journaled in the main frames is a second cross-shaft 13, receiving its motion from shaft 8 and the set of bevel gears 14C. U pon the front ends of shafts 10 and 13 are fixed the sprocket wheels 15, which by means of the chains 1G and the upper wheels 17 serve to rotate the upper cross-shafts i8, which transmits motion to the lower cross-shafts 19 by means of the chains 20 and wheels 21, these upper and lower shafts being journaled in the main frames and constituting the head and foot shafts of the vertical chain drivers 20. Swingnarms 52;. having idler wheels 23 engaging the chains 20 servie to adjust the tension of the latter upon their res ective wheels. f

he machine as herein disclosed is provided with a double set .of oppositely-disposed endless slip-sheet webs 24C, each folded transversely in a zigzag manner to form supporting sections and cover sections for printed sheets of considerable size, indicated by the broken lines 25.

The web sections, as shown in the enlarged detail views Figs. 3 and 4 are made of three sheets of material, preferably of thin tough paper, consisting of a central member 2G and the outer or facing members Q7, connected by the spaced lines of adhesive 28, extending transversely/of the webs, the sern eral web sections bein'g hingedly connected together by strips of: fabric 29, adhesively secured between the members'of the sections as shown. -To overcome the natural curling action of the individual members under the dinally thereof. By thus arranging the fibers of the members, not only 'vill the assembled members tend to present a substantially plane and strong surface for the reception of the Work, but When.'L the sectionsare bent during the act of unfold-ing, as shown in Fig. 4, the fiber stress'es in the opposite members will cause a .bulging or separating action of the connected heets between the line of adhesiveon the co cave side of the bend, inducing counteraeting forces tending to return the section to its normally plane condition when released. For advancin the .unfolded web sections each thereof rsA provided with eyelets 30, adapted to be engaged by the'pins 31, fixed in suitable position upon 'the chain drivers 20. l j. v p

For supporting the folded web sections in spaced relation with one another and propelling the same in a doivriivard' direction, the screW-conveyers 4 and 5"'areemployed, the spiral threads of whichare positioned to presentthe supporting sections'of the 0ppositelv disposed slip-sheetfwebs in substantially horizontal planes for receiving and holding the printed sheets. At their upper ends the threadsof the screw-conveyers are provided with an increased outward flare to allord a clear entrance for the overfolded vweb-sections', at which point the printed sheets are? received from the press by means of any approved press-delivery mechanism, preferably including a projecting recipro. catory sheet-gripper bar timed with respectAv to the slip-sheet machine. y y

At the lower or deliveryy end of the machine, the joint unfolding action of the oppositely disposed slip-sheet Webs allows the plfintge'jd sheetsto fall by gravity upon the table 232,' the'latter being preferably provided uji-th castersI for convenience in hanv dlin'g the delivered sheets. For controlling the' unfolding movements of the Webs, crossare employed, having terminal bldcks, ,34, slidably mounted in slots 35, formed in the front and rear frames, the blocksbeing connected on o posite sides of the machine to the levers 36 Iby the links 37. Cross-shafts 38, mounted for rocking movement in the opposite frames, secure the opposite levers in fixed relation with each other2 the levers on the front side of the machine being provided with the arms 36, to which is pivotally connected one end of the cam-rods 39, the opposite end being slotted for engaging tho shafts 10 and 13,

'which latter are provided withcams 40, en-

gaging rollers 41, mounted upon the rods, the rollers 'eemg indicated 1n dotted lines.,

By the rotationof the'cams-40, the crossbars 38 arepositively 'driven in the direction of the unfolding movement of the Web sections,`and for .the return movement of the crossbars,lspring vrods 42 are employed, the latter being-pivotally connected to the arms 36?' and provided With springs 43,-vvhich serve 5tov maintain operating -conection with the sito slip-sheet Webs fall by gravity from the free lower thread-ends` of the rotating screw conveyers upon the tension-rods l45, as shown, and in the continued movementof the Webs, as imparted by the drive-chains 20, they Will be unfolded by bending action in the manner indicated in the several po? sitions by the broken lines, a, and c, the extent of the bending action beingv regulated by the laterally yielding and horizontally movable tension-rods 45 and the connected cross-bars 33. p f

In conjunction With the unfolding movement of the web sections, a corresponding overfolding action is effected at the upper or receiving end of the machine by the con- Which serve to advance the unfolded Webs and project the sections thereof into such positionsas to cause them to fall by gravity and automdtically fold. To more effectively control this overfolding movement, means are provided to 'prevent-the premature bending or buckling action of the web sections consisting of a series of carrier-bars 47 which lextend across the machine and transversely engage the advancing web sections. The carrier-bars are-connected totinuous movement of the drive-chains 20,

gether in pairs and provided with terminalv rollers engagin the' raceways 48, secured to the opposite rames. An upward movement, corresponding in speed with that of the advancing Web, is imparted tothe carrior-bars by the drive-pins 49, fixed to the o carrier-chains 50, which are mounted upon the wheels 5l, secured to the cross-shafts 52, which latter are mounted for rotation in the opposite main frames and driven by the spur-gears 58 from the cross-shafts 18. In the movement of the carrier-chains, the pins thereon severally engage the carrier-bars 47 and elevate them from the bottom to -the vtop of'the vertical portion of the raceways,

monete around the upper bends ot which they are forced end dowiiiiiirdly return by gravity by Way of the curved positions thereof. "lvio sets of carrier-bars are employed for each web, one set thereof being arranged for an upward movement While the other set is descending; the latter movement being regulated by trips 54:, pivoted to the op posite raceivays and each provided with arms 55 `and 56, the `former arms engaging the opposite ends of the downwardly advancing carrier-har of each pair to arrest its movement and suitably position the same with respect to its clearance with the pre- .iceding pair ot carrier-hars rind timely engagement by the drive-pins 49. To eiiect 'the latter engagement, the arms 56 of the trips are engaged by the dogs 57, 4suitably positioned upiin opposite ends of the crossshafts 18, so that :it each revolution ofthe latter the trips are disengaged from the carrier-bars.

As shown herein, the cross-shafts 18 and 52, carrying respectively the drivechsins and' carrier-bar chains, are proportioned to malte one revolution for he advancement oit each web section, or two revolutions for a complete overtolding of a carrier section vnd e cover section of the web, which double rotation corresponds vwith one revolution of the cross-shaft 13, actuating the. delivery mechanism of the machine, For illustratling more clearly the overfolding action of thresds ci' thefscreiv conveyors and in post tion to receive a printed sheet, and c and f designate respectively the corresponding positions of the next following ciirrier sections und cover sections of the webs, ln the ad 'vanceinent of the web a half-section length, c and f respectively assume the positions el and f1, 'the next following sectionbeing)r iiiziiiitaiiied in a vertical path. by the coinsident movement of the carrier -bar el, unich continues thus to control the section for its full upward advancement to the po sition g, at which position the carrieihoars nrc driven over the upper liiend of the race way oi; the release of the web section, allow- .ingl the latter to fall to the position g1, section c1 to position c2 and j, the cover sec-I iicii, to fall and @verteld ,upon the advancing threads of the screW-conreyersl ln its mli'ifinccmenl', the next following" section of ne ivcbivill ,lilccii'isc be vertically sustained )orfirily by the immer-bari, and section l carried 'to vthe position g2, and upon the previously folded section f, and constitute a new carrier section. lt will thus be obvious that the succeeding Web sections may be readily overfolded upon the threads oi' the screw-conveyer and retained in separated relation thereby for the reception and retention of the printed sheets, the lateral position of the folded sections being innintained throughout the height of the ma chine by the fixed vertical guidebars 58, suitably supported and positioned to receive the thrust .of the webA sections during' their unfolding and overfolding movements. Veitically-elfictei'iding` guidebars are also conveniently 'spaced in lined relation ad jacent the drive-chains 2,0 and carrier-bars 47, and serve to laterally support the unfolded webs for eiieoting the driving action thereof.

While ll have shown and described the preferredA construction of the slip-sheet Webs, it will be evident that the number of inembers comprising a section and the material thereof may be varied, and the direction o' the fiber-lines of the opposing members transposed', and the spaced connection lines formed by stapling; or otherwise, Without departing 4from the principle of the invention. Also, when the printed-sheets are comparatively small, as supplied by a relatively small printing press, one folded slipsheet web may be used in place of the doublei set of Webs set forth, the latter being' preferably employed in the larger machines, as yallowing of smaller sections, oliering less resistance and consequent greater-durability and increasedyvorking speed. ln exceptionally large .machines additional transverse rein-l :forcing bars may be secured to the sections adjacent the hinge members.

What il claim as my invention and desire to secure by Letters Patent, is:

l.' An endless iiexible slip-sheet Weboldable transversely in a zigzag manner and comprising a series of hingedly connected sheetsupporting sections and cover secl 'lll tions, each thereof consist-ine; of a plurality of dexible slieetinembers connected together by spaced lines of adhesive extending transversely of said web.

2. An endless flexible slipshcet Web foldable transversely in a zigzag manner and comprising; a 'seresbil hingedly connected sheetfsupporting sections ond cover sec tions, each thereof consisting; of a centrd flexible sheet member and iiexible-sheet facino' members disposed on opposite sides of said central member and secured thereto by spaced lines of 'adhesive extending; trans versely of said web.

An endless ,flexible slipsheet nele-folds able transversely in .a zigzag manner and comprising ,a series of hingedly connected sheetsuPpOrtng sections and cover sections, erich tliereoc'onsisting of 'a central member v lines of adhesive extending transversely of of said central members and having its fiber-v said web. Y

4. An endless flexible slip-sheet web foldable transversely in a zigzag manner and comprising a series of sheet=supporting sections and cover sections, each thereof consisting of a central member formed of paper having its liber-grain extending transversely of said web, fabric hinge sections connecting said series of central members, and paper facing members disposed-on oppositc'sides grain extending longitudinally of said Web and. connected to said central members by spaced lines of adhesive extending transversely of said web. l

5. An endless exible slip-sheet web foldable transversely in a zigzag manner and comprising a series of hingedly connected 'sheet-supporting sections and cover sections, and eyelets formed in each of said sections.

6. A slip-sheet machine comprising an endless flexible slip-sheet web foldable transversely in a zi zag manner and forming a series of hinge ly connected sheet-supporting sections and cover sections, means forV advancing said web and overfolding said sections by gravity for the Ireception of the printed sheets and means for unfolding said sections for the delivery of said sheets.

7. A slip-sheet machine comprising an endless iexible slip-sheet web foldable transversely in a zigzag manner and forming a series of hingedly connected sheet-supporting sections and cover sections, means for advancing said web and over-folding said sections by gravity fpr the reception of the printed sheets, means for supporting and propelling said folded web sections in spaced relation With one another, and means for nnfolding said sections for the delivery of said v sheets.

8. A slip-sheet machine comprising an endless iexlble slip-sheet web foldable trans versely 1n a zi zag manner and forming a ,series offhinge lyconnected sheet-supporting sections and cover sections, moans for supporting4 and propelling the folded web sections` in spaced relation with one another, means for presenting the supporting sections for the reception of printed sheets, means'for overfolding said cover sections at the receiving end of the machine, and means for unfolding said sections for the delivery of said printed sheets.

nieuwe 9. A slip-sheet machine comprising a pair of endless flexible slip-sheet webs foldable printed sheets, means for overfolding said cover sections at the receiving end of the machine, and means for unfolding said sections for the delivery of said printed sheets.

10. A slip-sheet machine comprising an endless flexible slip-sheet web foldable transversely in a zigzag manner and comprising a series of hingedly connected sheet-supporting sections and cover sections, eyelets formed in said web sections, means 'ii-1r snpporting and propelling the folded web seetions in spaced relation with one another,` and driving means engaging said eyelets for advancing said web to unfold and overfold said web sections at the delivery and the receiving ends of the machine respectively.

l1. A slip-sheet machine comprising an endless -exible slip-sheet web foldable transversely in a zigzag manner and comprising a series of hingedly connected sheet-supporting sections and cover sections, means comprising a. series of rotatable screw conveyers for supporting and propelling the` folded web sections in spaced relation with one another, and means for unfolding and overfolding said Web sections at the delivery and` l receiving ends of the machine respectively.

12. A slip-sheet machine comprising an endless exible slip-sheet web foldable transversely in a zigzag mannerand comprising a series of hingedly connected sheet-support'- ing sections and cover sections, meansfor supporting and propelling the folded web sections in spaced relation with one another, means for overfolding said sections at the receiving end of the machine, and means including a slidable yielding web engaging tension bar for unfolding said sections at the delivery end of the machine.

Signed at New York,. in the county of New York and'State of New York this 10th day of November A. D. 1913.

Criss. W. Ln RUE, W. H. HUSTED.'

Images