US3150578A - Cut size continuous sheeter - Google Patents

Cut size continuous sheeter Download PDF

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Publication number
US3150578A
US3150578A US21180462A US3150578A US 3150578 A US3150578 A US 3150578A US 21180462 A US21180462 A US 21180462A US 3150578 A US3150578 A US 3150578A
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Prior art keywords
box
stack
bottom
sheets
means
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Dale Ingvald
John W Caswell
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LAMB GRAYS HARBOR CO Inc
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LAMB GRAYS HARBOR CO Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. of the kinds specified below
    • B65H35/04Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. of the kinds specified below from or with transverse cutters or perforators
    • B65H35/08Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. of the kinds specified below from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00Pile receivers
    • B65H31/34Apparatus for squaring-up piled articles
    • B65H31/38Apparatus for vibrating or knocking the pile during piling

Description

Sept. 29, 1964 I. DALE ETAL 3,150,578

CUT SIZE CONTINUOUS SHEETER Filed July 23, 1962 5 Sheets-Sheet l INVENTORS ma vn L 0 H- E Jaw/1 (4/. CH5 WELL Sept. 29, 1964 I. DALE ETAL CUT SIZE CONTINUOUS SHEETER 5 Sheets-Sheet '3 Filed July 23, 1962 INVTORS may/a0 DflLE B JOHN MCnswzu.

E lllllcllllll FT JJ Q n w w Sept. 29, 1964 l. DALE ETAL CUT SIZE CONTINUOUS SHEETER 5 Sheets-Sheet 5 Filed July 23, 1962 l 1 I l I I l l 1 l l l l 5 i THE N m0 w k V S 0 W04" in m A W NW, wa y Y B United States Patent Qfficc 3,150,578 Patented Sept. 29, 1964 3,150,578 CUT'SIZE CONTINUOUS SIEETER Ingvald Dale and John W. Caswell, Hoquiam, Wash, assignors "toLamb Grays Harbor 'C0., Inc., Hoquiam, Wash.

Filed July 23, 1962,Ser. No, 211,804 6'Claims. (Cl. 93-93) This invention relates to what is herein designated a Cut 'Siz'e Continuous Sheeter. More specifically, the invention relates to a novel combination of mechanisms that are operable for the high speed cutting, stacking and discharging, without interruption, of reams of stacked paper sheets of predetermined count.

It is the principal object of this invention to provide a combination of unitary mechanisms that are operable conjointly for the drawing of paper strips into the cutting machine; for the high speed cutting of said strips as delivered thereto either singly or in multiples to produce pieces of a predetermined size; for the even stacking of l the pieces as successively cut and for the delivery of the stacks from the machine in reams of predetermined count.

It is also an object of this invention to equip the sheet cutting mechanism with novel means for the delivery of the cut paper sheets therefrom at high speed, without clogging or jamming of the sheet feeding 'or stacking mechanism; top'rovide a novel form of vibrating box for the reception of the cut-sheets for stack formation; to provide a continuous l'ayboy for the stacking of the sheets and means for lowering the ream stacks of predetermined count, as formed, from the stacking box and then discharging them between deaer'ating belts which operate to squeeze and roll out air from between the sheets and move the stack, without disruption to a. wrapping or packaging station.

Further objects and advantages 'of the present invention reside in the detail of construction of the several unitary parts employed in the present combination and in their mode of operation as will hereinafter be de scribed.

In accomplishing the above mentioned and other objects of the invention, we have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawings wherein:

FIG. 1 is a side view of the machine, shown apart from the sheet cutter, embodying the improvements of the present invention therein, particularly illustrating the cut sheet feeding means, the sheet stacking box, the stack lowering means and the stack deaerating belts.

FIG, 1A is a cross section taken on line 1A1A in FIG. 1.

FIG. 2 is a central, longitudinal sectional view of the machine as seen in FIG. 1, taken in the Vertical plane of line 22 in FIG. 3. R

FIG. 3 is a top or plan view of the machine, as'shown in FIGS. 1 and 2. i

FIG. 4 is a side view of the rotary paper strip cutter as installed at the receiving endof the machine of FIG. 1.

FIG. 5 is a plan view of the sheet cutter shown in FIG. '4.

FIG- 6 is the discharge end elevation of the machine of FIG. 1.

FIG. 7 is a longitudinal section of the paper strip cutter taken on line 77 in FIG. 5.

FIG. 7A is an enlarged cross sectional detail on line 7A7A in FIG. 7.

FIG. 8 is a schematic showing of the pneumatic system for control of the machines operations. R

Referring more in detail to the drawings: To impart a better understanding of the several units embodied in the present machine, their assembly, relationship and mode of operation, it will here be explained that, as shown in the several assembly views of the drawings, the machine comprises a succession 'of cooperatively related and operatively connected mechanisms that are individually designated in their entireties as follows:

(1) A high speed rotary sheet cutter R shown best in FIGS. 5, 4, and 7.

(2) A 'feed section, designated in its entirety by reference letter F which receives the sheets of paper as discharged from the rotary cutter.

(3) A vibrating stacking box V which receives the cut sheets of paper from the feed section and forms them into a stack.

(4) A stack deaera'ting seetion D which receives the stacks of paper of predetermined count and advances them after deaeration to a packaging 'or' wrapping station.

The rotary cutter R herein shown might be one of any suitable kind and forin adapted to the present operation and no claim is made specifically thereto insofar as the rapid and continuous cutting of pieces of specified length from strips of paper fed thereto is concerned.

It has been shown in FIG. 7, that four strips of paper of the same width, designated, respectively, by reference characters, a, b, c, and d, are being simultaneously drawn from supply rolls, not shown, to the cutter R and are brought together therein and are cut thereby to proper length and the pieces delivered, four at a time, from the cutter onto the downwardly sloping top run of the sheet conveyor beltsystem of the sheet feed section F for their conveyance and delivery thereby into the vibrating stacking box V.

It is further shown in FIGS. 1 and 4 that the rotary cutter R is mounted at the higher, right hand end of the rigid, main frame structure, of the machine. This frame structure preferably is fabricated of angle and channel iron pieces. The cutter R is of unitary formation and is supported on laterally spaced, horizontal channel beams 12 which, in -turn, are supported by paired laterally spaced vertical legs 13, located at that end of said main frame structure. As best shown in FIGS. 4, 5, and 7, the cutter R comprises the usual fly knife mounting reel 14, equipped with a spirally directed knife or blade 14 that coacts, as the reel revolves, with a fixed blade bar 15 to 'cut the paper strips and discharge the pieces, as cut to exact length, onto the top run of a sheet discharge belt 16 which, as best shown in FIG. 7, operates about parallel, driven rollers 17, 18 and 19, to deliver the cut sheets 'endwise and ultimately to the feed section F of the machine.

Driving of the paper cutter R is effected by means of an electric motor 20 that has a driving belt connection 21 with the drive shaft of the fly knife mounting reel 14, as shown in FIGS. 4 and 7. V

The discharge belt 16 of the cutter R is provided along its central longitudinal line with a continuous row of spaced perforations 25 and it is mounted for travel at its opposite ends about the roller 18 and 19 with its top run sliding on and passing across the top wall 30 of a vacuum chamber 31 that is fixed in the frame of the cutter; this top wall 30 being formed with a slit 32 with which the row of perforations 25 of the belt 16 register in travel across the chamber, thus to apply suction through the belt perforation that will cause the sheets of paper as sheared from the strips to be drawn to and held against the belt and positively fed thereby into thehigher, receiving end of the feed section F. The vacuum chamber 31 andslot 32 terminate short of the discharge end of belt 16 for release and discharge of the paper sheets from the belt into feed section F.

The feed section F of the machine comprises a guideway that is supported by and which extends along the top of the main frame structure at a downwardly sloping angle of approximately as well shown in FIG. 2 and the sheet conveyor belt 33, as contained therein and onto which the cut sheets are delivered from belt 16 of the cutter R, slopes downwardly accordingly toward its discharge end to the receiving end of the sheet stacking box V.

It is seen in FIGS. 2 and 3 that the continuous belt 33 onto which the cut sheets of paper are discharged from belt 16, is disposed for travel in alignment with and along the longitudinal central plane of the cutter frame and feed section F; the belt guideway being defined by laterally spaced parallel, opposite side plates 34-34. This belt 33 is of substantial width and the sheets of paper as dropped thereon between the side plates 34-34 are carried thereby and delivered into the stacking box which is mounted at the lower end of the belt guideway as seen in FIGS. 1 and 3.

The sidewalls 3434' of the sheet guideway are in fixed spacing and are equipped at the under edges of their higher end portions with short downwardly directed ears 36 that are bolted as at 37 in FIG. 1, to the upper ends of the laterally spaced legs 13 at that end of the machine, and, at their lower ends, are supported in fixed spacing on and by a cross-bar 38 that is fixed transversely of the main frame structure, as shown in FIG. 1, to the upper ends of laterally spaced vertical members 13 at that end of the main frame.

The feed belt 33 is mounted at its receiving and discharge ends, respectively, for travel about transverse horizontal rollers 40 and 41 which have trunnions at their ends revolubly mounted in bearings 42-42 fixed to parts of the main frame structure as seen in FIGS. 1, 3 and 5. The trunnion at one end of roller 40 is extended and mounts a driving wheel 43 about which a belt 44, operating from a driven belt wheel 45 or the cutter mechanism, as in FIG. 5, is extended.

The vibrating ream forming box V into which the paper sheets are discharged from belt 33 for stacking is defined by laterally spaced opposite sidewalls 46-46, see FIG. 3, extending substantially as continuations of the opposite walls of the guideway containing the sheet delivery belt 33. The outer end of the box has a closing wall 47. When paper sheets are discharged from belt 33 they are stopped by the end wall 47 and are dropped onto a horizontal box bottom plate 49.

During the stack forming operation, the box V is caused to be laterally vibrated by a conventonal form of air operated vibrating device designated by numeral 50, best shown in FIG. 3. This device 50 is seen to be operatively attached at 45 degrees to the endwall 47 and to a sidewall 46 to impart vibrations in both directions. Spring guides 5151 are mounted to side walls 46, and form vibrating back guide to complete box for forming reams.

The plate 49 which serves as a bottom for the stacking box is supported horizontally on the upper end of the piston rod 58 that extends upwardly from an air cylinder 58 mounted directly below the stacking box on the top end of an air cylinder 58x as observed in FIG. 2.

It is seen in FIGS. 1 and 2, that the cylinders 58 and 58x are joined end to end in coaxial alignment. Piston rod 58' extends from a piston 58p fitted for travel in cylinder 58 and cylinder 58x is fitted with a piston 58" on a piston rod that extends downwardly and has supporting connection at its lower end on a fixed block 58z.

The arrangement of cylinders 58 and 58x is best seen in FIG. 8. It is shown in FIGS. 1 and 2 that the cylinders joined end to end are movable endwise as a unit in a guide 59 fixed to the frame structure.

At the start of a ream cutting and stacking operation, the box bottom plate or table 49 is in its upper, or fully lifted position as shown in dash lines in FIG. 2, but as the sheets of paper build up the stack on this plate, it is caused to be slowly and gradually metered down by 4. downward travel of the joined cylinders, under control of means presently explained, thus to keep the top of the stack at a constant level.

When the forming stack reaches a predetermined count, a set of flat, bar-like fingers 60 are caused to be projected horizontally across its top surface thus to catch and support the oncoming cut sheets of paper as they continue to be delivered from belt 33 into the box V. The formed stack on plate 49 is then quickly lowered to stack discharge level as indicated by the full line showing of the plate 49 in FIG. 2, and the stack is then pushed endwise from plate 49 between the stack deaerating belts of unit D as seen in FIG. 2, which are presently to be fully described.

The stack supporting fingers 60 are all mounted in the same plane and are coextensive. They are fixedly supported by and extended forward from the forward end of a carrier frame 62 that is reciprocally slidable on and along a bar 63 that normally extends substantially horizontally beneath the plane of travel of conveyor belt 33 and is fixedly mounted at its forward end in a supporting hanger bar 64 with pivotal mountings 64' that permits the forward end of the bar 63 to be moved upward and downward.

With the full lowering of a finished stack S as formed on the box bottom plate 49 to the discharged position, the stack 5 is then pushed endwise from the plate 49 as shown in FIG. 2, between a horizontally driven belt 66, traveling across a horizontal table top 66' and a belt 67 that travels about guiding rollers 68-68 and 69; this belt being backed by a fixed plate 70. From roller 68' the belt 67 slopes upwardly to the belt driving roll 69. Thus, as the stack 5 is received in the diverging mouth portion of the passage between the belts 66 and 67, which belts travel at the same speed, it is caused to be yieldingly compressed and any air that may be trapped between sheets of the stack is thus caused to be squeezed out. As the deaerated stack passes from between these belts, it may be conveyed by belt 66 to a place for storage, for wrapping or packaging.

FIG. 2 shows belt 66 to be passed about and driven by a belt roller 72 and belt 67 to be driven by power transmission belt 74 which has sprocket wheel driving connec tions with roller 72 and 69. It is also seen that the rollers 68-68 are mounted by a rigid swing frame 75 which is pivoted on the supporting axis of roller 69 as shown in FIG. 2. The belt 67 travels across the underside of the flat backing plate 7 t) which is fixed in the frame 75 between rollers 68-68. The frame 75 is upwardly yieldable at its discharge end against a pair of springs 77 mounted by a cross bar 78 fixed in the main frame structure as shown in FIG. 6, thus to yieldingly accommodate paper stacks of variable thicknesses, under a yieldable pressure. It is further to be explained that, after the fingers 60 have been extended to catch the cut sheets discharged from belt 33 into the stacking box V and While the first formed stack is being lowered for delivery between the deaerating belts, the extended fingers are also caused to be gradually metered down. This lowering of the fingers is under control of an air cylinder 80 supported pivotally by a bracket 81 from a vertical leg of the main frame structure as in FIG. 2. The cylinder 80 is supported substantially directly below the forward end of bar 63 and its piston rod 83 extends upwardly therefrom and is connected pivotally by a link 84 with the support 65 that joins the vertically movable ends of the slide mounting bar 63. The regulated exhausting of air from the lower end of cylinder 80 results in the metering down of the extended fingers 60 accordingly; the application of air under pressure to the lower end of the cylinder 80 lifts the fingers, after retracttion, to their upper limit, as in FIG. 1.

The extending and retracting of the fingers 60 is controlled by an air cylinder that is mounted below and parallel with the bar 63 which carries the slide pate 62. It has a piston rod 91 extended to and attached to an arm 92 that extends down from the slide 62. Thus, when the piston rod is extended from the cylinder, the slide 62 is moved accordingly to extend the fingers. When it is retracted, the fingers are retracted accordingly,

The ejection of a formed stack from the plate 49 to the deaerating belts is effected by means, as shown in FIG. 2, to comprise an air cylinder 95 fixed horizontally in the main frame structure below the level of the air cylinder 90. It has a piston rod 95 extended from its forward end that mounts a push plate 96. When this piston rod is caused to be extended, the push plate engages the lowered stack S and moves it between the receiving ends of the deaerating belts '66 and 67 as has been shown in FIG. 2. Then the piston and push plate are retracted to the normal position of FIG. 1 while the belts 66 and 67 move the stack for its deaeration.

The various air cylinders and devices are controlled in their functions by valve means that can best be explained in connection with the diagrammatic showing of parts in FIG. 8.

A cycle of operations begins with cut paper sheets being rapidly delivered from cutter R onto feed belt 33 from which they are discharged into the stacking box V and are dropped therein onto the box bottom plate 49 which is then at its fully lifted position of FIG. 1. As the stack builds up, this plate 49 is lowered accordingly by the controlled bleeding of air from cylinder 58x. When the stack reaches a predetermined count, as established by a counter, operated by direct connection with the cutter R, the stack discharge cycle begins. The retracted fingers 60 are first caused to be extended across the top of the finished ream, by the admittance of air under pressure to the outer end of cylinder 90. As the fingers leave, valve 102 is shifted, which starts exhausting the air from cylinder 80 as shown in FIG. 1 to gradually lower the fingers. When the fingers reach their fully extended positions, the finger mounting slide engages and acautes a valve 101 to energize cylinder 58 to quickly lower plate '49 and the finished ream stack to its discharge level.

When the stack S reaches discharge level, the air cylinder 95 is energized thus to extend its rod 95 and the push plate 96 to push the stack S from plate 49 to a position between the ends of the deaerating belt 66 and 67. The push plate 96 is then retracted by cylinder 95 to normal position as in FIG. 1. This stack displacement is followed by the upward return of plate 49 to raised position, to receive the forming ream from fingers 60 which are caused to be retracted and the stack of sheets thereon deposited on the lifted plate 49 and the depositing of sheets from belt 33 thereon continues to complete the stack to full count. The plate 49 immediately starts metering down.

In FIG. 8, we have shown electrical and air sequences and control as follows:

A switch is actuated from Rotary cutter R, giving impulse to the counter for each sheet or group of sheets cut. When a predetermined count has been reached, relay 1 is energized and relay g is opened to de-energize solenoid valve 112 which, in turn, actuates air cylinder 90 to extend the fingers 60. As the fingers 60 move forwardly, valve 119 shifts and air is allowed to exhaust from cylinder 80 to lower the extended fingers as the stack builds up thereon. This causes the piston actuated valves 114 and 118 to shift, thus exhausting the piston ends of cylinders 58 and 58x.

When the fingers 60 reach their extended position, valve 117 is thereby caused to be shifted to actuate cylinder 58 to lower the box bottom 49 to stack discharge position. As it moves down, the normally closed switch TDS is opened which de-energizes and opens M and N which, in turn, tie-energizes i which closes g and opens I.

As the table 49 lowers to discharge position, valve 110 is shifted which in turn shifts piston actuated valve 121 to actuate cylinder 95 to extend the pusherplate 96.

As pusher leaves, valve 116 shifts and connects port valve 130 and pilot of valve 132 to exhaust. When pusher 96 reaches extended position valve 135 shifts, which in turn shifts piston actuated valve 132 which in turn exhausts pilot of valve 121 allowing it to shift and actuate cylinder to retract the pusher. In addition, piston actuated valve is shifted to ready it for raising the table 49.

When table 49 reaches up position, normally open switch TUS is closed, which energizes K and closes M and N, which in turn energizes solenoid operated valve 112 and actuates cylinder 90 which retracts the fingers 60 and shifts piston actuated valve 130.

When fingers 60 reach retracted position, valve 119 is shifted, which ac-tuates cylinder 80 to return fingers to raised position and shifts position actuated valve 114 to exhaust air from cylinder 58x and start table plate 49 to metering down. In addition, valve 118 is shifted to hold pressure on .piston end of top table cylinder 58 and rod end of bottom cylinder 58x to make a positive metering down of table 49 possible.

Manually operated valve 111 has been inserted to initially start table 49 in the raised position. Valve 111 is shifted which in turn shifts piston actuated valve 114 to actuate cylinder 58x to raise the table.

What we claim is:

1. A mechanism of the character described comprising in combination, means for successively delivering sheets of like size into a sheet stacking box; said box having an independently movable bottom on which said delivered sheets are received to form a stack, means for lowering said bottom in the box in accordance with the building up of a stack of sheets thereon, sheet catching means movable from a retracted position outside the box to an extended position Within the box directly overlying a stack formed on said bottom, to temporarily receive the delivered sheets for stacking thereon during a time interval for removal of the formed stack from said box bottom, means operable for lowering the box bottom and stack as formed thereon to a discharge level for the removal of the stack from said bottom, means for returning the unloaded box bottom to a position immediately below said extended sheet catching means, another means operable incident to the return of the box bottom to initial position for retracting said sheet catching means from the box and thereby depositing the sheets stacked thereon on said bottom and means operable to cause said sheet catching means, upon its being extended, to be gradually lowered in accordance with the build up of a stock of sheets thereon.

2. A mechanism according to claim 1 including, also, means for pushing a formed stack endwise from the box bottom when the box bottom has been lowered to the stack discharge level, and a pair of driven, coacting conveyor belts is spaced to receive the stack endwise as pushed from the box bottom between them and to progressively apply pressure to the stack as it is moved by and between said pair of belts for expulsion of air from between the stacked sheets.

3. A mechanism of the character described comprising in combination, means for successively delivering paper sheets of like size into a sheet stacking box; said box having dimension defining walls and an independently movable bottom onto which said delivered sheets are received to form a stack, a support for the box bottom comprising one means associated therewith for causing said box bottom to be lowered thereby in accordance with the build up of a stack of sheets thereon and another means for the quick final lowering of said bottom and stack to a stack discharge level, means for actuating the support to return the box bottom to its raised position, horizontally extending sheet catching members supported for shifting from a retracted position outside the stacking box to an extended position, inside the box directly overlying a stack forming on said bottom to temporarily receive incoming sheets thereon during a period for the removal of the formed stack, means for displacing the formed stack from the box bottom when lowered to discharge level, means for actuating the box bottom support to return the unloaded bottom to its initial position, and means for causing the retraction of said sheet catching members from the box and the incidental depositing of stacked sheets therefrom on said bottom.

4. A mechanism according to claim 3 wherein said means for moving said box bottom between its upper and lower limits of travel comprises a pair of power cylinders mounted coaxially end to end and joined as a unit, each cylinder containing a reciprocal piston and piston rod, the rod of one piston being extended downwardly to serve as a support for the assembled cylinders and the rod of the other being extended upwardly from its cylinder as a mounting for the box bottom; said rods being extendable from their cylinders by fluid pressure medium for the actuation to and support of the box bottom in its initial sheet receiving position, a valve means for controlling the metered exhausting of pressure medium from one of said cylinders for the lowering of the unit and box bottom in accordance with stack build-up and another valve means for a quick exhaustion of pressure medium from the other cylinder for the quick final lowering of the unit and bottom to stack discharge level.

5. A mechanism according to claim 3 wherein said sheet catching members extend from a slide that is reciprocally mounted on a horizontal bar, and wherein a pressure cylinder is operatively connected with said slide for the extending and retracting of said members and a valve means is operable upon delivery of a predetermined number of sheets onto the box bottom for controlling an application of a fluid pressure medium to one end of said cylinder, and another valve means is operable under control of the return movement of the unloaded box bottom to its initial position, to apply the pressure medium to the other end of the cylinder said horizontal bar on which said slide is reciprocally mounted being pivotally supported at one end for vertical movement of said sheet catching members, and means is provided for moving said bar downwardly at its mov- 8 able end to lower the extended catch members in accordance with build up of a stack thereon and to lift it to normal position when the bottom is lifted back to its upper position.

6. A machine of the character described comprising in combination, means for the delivery of paper sheets of like size successively into a sheet stacking box, a sheet counter operable by delivery means; said stacking box comprising dimension defining walls and an independently movable bottom onto which said sheets are received from the conveyor for stacking, a vertical support for the box bottom comprising two power cylinders joined end to end as a unit, with the piston rod of the lower cylinder extending downwardly to a fixed support and with the piston rod of the upper cylinder extended upwardly and mounting the box bottom thereon, valve means associated respectively with said cylinders for conrolling the application of a fluid pressure medium thereto to effect lifting of the box bottom to a top position to receive sheets from the conveyor, means for causing the valve means of the lower cylinder to meter out the pressure medium therefrom to maintain the top of the stack as formed, at a constant level, and means under control of said sheet counter for quickly exhausting pressure medium from the top cylinder upon the building of the stack to a predetermined count to effect a quick lowering of the box bottom and stack to a discharge level, and a stack pushing cylinder with control valve operable incident to the quick lowering of the box bottom to discharge position, to admit pressure medium to the pushing cylinder to displace the stack from said bottom.

References Cited in the file of this patent UNITED STATES PATENTS 1,997,965 Daly Apr. 16, 1935 2,413,556 Fourness et al Dec. 31, 1946 2,606,483 Forbes Aug. 12, 1952 2,641,974 Sperling et al June 16, 1953 2,819,661 Howdle et al. Jan. 14, 1958 2,934,221 Tonna Apr. 26, 1960

Claims (1)

1. A MECHANISM OF THE CHARACTER DESCRIBED COMPRISING IN COMBINATION, MEANS FOR SUCCESSIVELY DELIVERING SHEETS OF LIKE SIZE INTO A SHEET STACKING BOX; SAID BOX HAVING AN INDEPENDENTLY MOVABLE BOTTOM ON WHICH SAID DELIVERED SHEETS ARE RECEIVED TO FORM A STACK, MEANS FOR LOWERING SAID BOTTOM IN THE BOX IN ACCORDANCE WITH THE BUILDING UP OF A STACK OF SHEETS THEREON, SHEET CATCHING MEANS MOVABLE FROM A RETRACTED POSITION OUTSIDE THE BOX TO AN EXTENDED POSITION WITHIN THE BOX DIRECTLY OVERLYING A STACK FORMED ON SAID BOTTOM, TO TEMPORARILY RECEIVE THE DELIVERED SHEETS FOR STACKING THEREON DURING A TIME INTERVAL FOR REMOVAL OF THE FORMED STACK FROM SAID BOX BOTTOM, MEANS OPERABLE FOR LOWERING THE BOX BOTTOM AND STACK AS FORMED THEREON TO A DISCHARGE LEVEL FOR THE REMOVAL OF THE STACK FROM SAID BOTTOM, MEANS FOR RETURNING THE UNLOADED BOX BOTTOM TO A POSITION IMMEDIATELY BELOW SAID EXTENDED SHEET CATCHING MEANS, ANOTHER MEANS OPERABLE INCIDENT TO THE RETURN OF THE BOX BOTTOM TO INITIAL POSITION FOR RETRACTING SAID SHEET CATCHING MEANS FROM THE BOX AND THEREBY DEPOSITING THE SHEETS STACKED THEREON ON SAID BOTTOM AND MEANS OPERABLE TO CAUSE SAID SHEET CATCHING MEANS, UPON ITS BEING EXTENDED, TO BE GRADUALLY LOWERED IN ACCORDANCE WITH THE BUILD UP OF A STOCK OF SHEETS THEREON.
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US3477591A (en) * 1966-12-23 1969-11-11 Bonnierfoeretagen Ab Means for separating and stacking newspapers and the like
US3488693A (en) * 1967-03-22 1970-01-06 Windmoeller & Hoelscher Bag-making machine
US3557667A (en) * 1966-07-16 1971-01-26 Saffa Spa Automatic device associated with a to-size cutter for collecting abrasive or other kind of sheets
US3580402A (en) * 1969-01-30 1971-05-25 Gen Foods Corp Apparatus for automatically stacking and inverting stacked units of sheet material
US3604094A (en) * 1967-06-29 1971-09-14 Farmer Mold & Machine Works Battery element fabricating machines
US3672118A (en) * 1970-03-09 1972-06-27 Ibm Card packaging apparatus
US3805982A (en) * 1969-01-30 1974-04-23 Gen Foods Corp Method for automatically stacking and inverting stacked units of sheet material
US3871539A (en) * 1971-09-29 1975-03-18 Westvaco Corp Panel counting, collecting and gating method
US3892168A (en) * 1974-01-14 1975-07-01 Molins Machine Co Inc Counter ejector
US3905487A (en) * 1974-03-04 1975-09-16 Greene Line Mfg Corp Continuous stacking apparatus
US4311475A (en) * 1978-12-26 1982-01-19 Mitsubishi Jukogyo Kabushiki Kaisha Counter ejector
US4799847A (en) * 1985-10-02 1989-01-24 Jagenberg Aktiengesellschaft Sheet stacker
US20060071409A1 (en) * 2004-09-20 2006-04-06 Bowe Bell + Howell Company Accumulator apparatus non-marring pusher system

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Cited By (16)

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US3276605A (en) * 1964-10-15 1966-10-04 Curtis Marble Machine Co Cloth package transfer mechanism
US3401809A (en) * 1965-10-20 1968-09-17 Chicago Machinery Lab Inc Book handling apparatus
US3557667A (en) * 1966-07-16 1971-01-26 Saffa Spa Automatic device associated with a to-size cutter for collecting abrasive or other kind of sheets
US3477591A (en) * 1966-12-23 1969-11-11 Bonnierfoeretagen Ab Means for separating and stacking newspapers and the like
US3488693A (en) * 1967-03-22 1970-01-06 Windmoeller & Hoelscher Bag-making machine
US3604094A (en) * 1967-06-29 1971-09-14 Farmer Mold & Machine Works Battery element fabricating machines
US3580402A (en) * 1969-01-30 1971-05-25 Gen Foods Corp Apparatus for automatically stacking and inverting stacked units of sheet material
US3805982A (en) * 1969-01-30 1974-04-23 Gen Foods Corp Method for automatically stacking and inverting stacked units of sheet material
US3672118A (en) * 1970-03-09 1972-06-27 Ibm Card packaging apparatus
US3871539A (en) * 1971-09-29 1975-03-18 Westvaco Corp Panel counting, collecting and gating method
US3892168A (en) * 1974-01-14 1975-07-01 Molins Machine Co Inc Counter ejector
US3905487A (en) * 1974-03-04 1975-09-16 Greene Line Mfg Corp Continuous stacking apparatus
US4311475A (en) * 1978-12-26 1982-01-19 Mitsubishi Jukogyo Kabushiki Kaisha Counter ejector
US4799847A (en) * 1985-10-02 1989-01-24 Jagenberg Aktiengesellschaft Sheet stacker
US20060071409A1 (en) * 2004-09-20 2006-04-06 Bowe Bell + Howell Company Accumulator apparatus non-marring pusher system
US7360758B2 (en) * 2004-09-20 2008-04-22 Bowe Bell + Howell Company Accumulator apparatus non-marring pusher system

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