US2993419A - Container setting up machine - Google Patents

Description

July 25, 1961 G. c. CURRIE 2,993,419

CONTAINER SETTING UP MACHINE INVENTORv fiat e16 iii/lie ATTORNEYS July 25, 1961 G. c. CURRIE CONTAINER SETTING UP MACHINE 4 Sheets-Sheet 2 Filed Feb. 2, 1959 IN'VENTOR fii'arer [II 11w ATTORNEYS July 25, 1961 G. c. CURRIE 2,993,419

CONTAINER SETTING up MACHINE Filed Feb. 2. 1959 4 Sheets-Sheet 3 INV EN TOR i'aVez' 'l'wrw ATTORNEYS July 25, 1961 G. c. CURRIE 2,993,419

CONTAINER SETTING UP MACHINE Filed Feb. 2, 1959 4 Sheets-Sheet 4 INVENTOR filmr fill/1w ATTORNEYS l 2,993,419 CONT j: x.=. R SETTING UP MACHINE Grover C. Currie, Charlotte, N.C., assignor to Currie Manufacturing Company Filed Feb. 2, 1959, Ser. No. 790,587 8 Claims. (Cl. 93-441) The present invention relates to machines for setting up containers or boxes from fiat cardboard or corrugated board blanks.

The machine of the present invention is especially designed to form upwardly opening trays from flat blanks of corrugated board by folding side and end wall portions of the blanks into erect position relative to the bottom panel and securing a hinged flap projecting from an end of the side or end wall at each corner of the tray in overlapping relation to the end portion of the adjacent end or side wall.

An object of the present invention is the provision of a novel machine which will successively and rapidly fold a series of trays by withdrawing flat blanks from a stack of blanks, folding them into an erected tray, holding them for a selected period of time to secure the tray elements in erect position, and ejecting the tray from the machine.

Another object of the present invention is the provision of a novel machine for setting up tray-like containers from fiat blanks by successively and automatically feeding flat blanks from a stack of blanks to a folding station, applying adhesive to selected areas of .the blanks during feeding thereof, folding the blanks into an erected tray, clamping adhesive coated portions of the blank against the surfaces with which they are to be associated in the erected tray for a sufficient period to set the adhesive and ejecting the tray from the machine.

A further object is to provide a transfer mechanism in such a machine for delivering the folded blanks away from the folding station while holding the adhesive coated portions against their associated blank surfaces for a selected adhesive setting period.

Still another object is to provide a novel adhesive applying mechanism for applying the adhesive to the flat blanks during advancement of the blanks to the folding station.

Other objects, advantages and capabilities of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings illustrating one preferred form of the invention.

In the drawings:

FIGURE 1 is a plan view of a blank which is adapted to be erected into a tray-like container by the machine of the present invention;

FIGURE 2 is a side elevation of a container setting up machine embodying the present invention;

FIGURE 3 is an end elevation of the machine viewed from the delivery end thereof;

FIGURE 4 is a top plan view of the machine;

FIG. 5 is a partial side elevational view of the turret and ejector; and

FIG. 6 is an enlarged section of a turret form unit on the plane indicated by line 6-6 of FIG. 5.

Referring to the drawings wherein like reference characters designate corresponding parts through the several figures, and particularly to FIGURE 1, the machine of the present invention, illustrated generally by the reference character 10, is designed to process blanks of the form designated by the reference character 11 in FIG- URE 1, formed of corrugated board, cardboard or other foldable sheet material. Blank 11 comprises a rectangular bottom panel 12, end walls 13 and 14 hinged to the opposite ends of the bottom panel 12, and side walls 15 Patented July 25, 1961 first folded inwardly about their hinge connections withthe side walls. Following initiation of this folding stage, the side walls 15, 16 and the end walls 13, 14 may then be folded about their hinge connections with the bottom panel 12 to bring them into erect position with the end walls 13, 14 in outwardly lapping relation to the inwardly folded hinge flaps 17. The side walls should be folded in leading relation to the folding of the end walls. Suitable adhesive will be applied by the machine, preferably to areas 18 on the inwardly disposed surfaces of the end walls 13, 14 where they will overlap the hinge flaps 17 so as to adhere the end walls 13, 14 and the hinge flaps 17 together in the erected container.

Referring now particularly to FIGURES 2 to 4, the setting up machine 10 comprises a frame 20 having a base 21, transversely spaced pairs of vertical frame members 22 and 23, and a pair of upwardly inclined rear frame members 24. A motor unit 25 is coupled by sprocket and chain means to a main drive shaft 26 journaled in the vertical frame members 23.

The flat blanks 11 of corrugated board or the like are stacked upon a lift plate 27 which is slidably supported on the rear frame members 24 in cantilevered fashion. The lift plate 27 is advanced along the frame members 24 by an endless chain 28 at each side of the frame 20 anchored to the lift plate 27 and trained about an idler sprocket 29 near the base 21 and a drive sprocket 30. The drive sprocket shaft is geared to a ratchet shaft having a ratchet 31 thereon, which is advanced in stepwise fashion by a pawl 32 on a rock lever 33 to index the chain drive sprocket 30. The rock lever 33 is coupled by connecting rod 34, bell crank lever 35 and connecting rod 36 to a cam follower lever 37 controlled by a suitable cam keyed on the main drive shaft 26. The indexing of the lift plate 27 is such that it is elevated through about the thickness of one blank 11 for each step of the lift plate 27.

The blanks 11 are retained against lateral displacement when stacked on the lift plate 27 by flanking guide members 38 threaded onto transverse upper and lower worm shafts 39 and 40. The Worm shafts 39 and 40 are coupled together for synchronous movement by a chain 41 and sprockets on the shafts 39, 4t), and a crank is provided on the shaft 39 whereby the guide members 38 may be simultaneously driven toward or away from each other to adjust their spacing to the dimensions of the blanks 11. Each set of the threaded apertures in the guide members 38 for the shafts 39, 40 should either have opposite pitch or the worm shafts 39, 40 should have two sets of threads of opposite pitch.

A suitable blank transfer mechanism, indicated generally at 42, is provided at the top of the rear frame members 24 for transferring the uppermost blank 11 on the stack to the nip between sets of feed rolls 43, 44 for advancement horizontally along laterally spaced feed rails v 45 to a forming station 46. The lowermost feed rolls 43 are preferably rubber covered and are driven by chain 47 from a sprocket on the main drive shaft 26. The blank transfer mechanism 42 in this exemplary embodiment comprises a plurality of suction cups 48a supported on a carriage 48 which is supported on a shaft 49 to be pivoted about the shaft 49 and translate the cups 48a through a cups 48a so as to grip the blank 11 when the cups descend into contact with the blank and release the blank when it has been fed into contact with the rolls 43.

The specific design and construction of the blank transfer mechanism 42 is subject to considerable variation by persons with ordinary skill in the art to attain the action desired, so that further detailed description of this mechanism is believed unnecessary. The shaft 49 on which the suction cup carriage is supported is oscillated by means of the lever 51 coupled by connecting rod 52 to cam follower lever 53 actuated by a suitable cam on the main drive shaft 26, the cam follower lever 53 being biased in a counterclockwise direction by the spring 54.

It will be apparent that the blank 11 delivered to the feed roll 43 will be fed along the laterally spaced feed rails 45 until the trailing edge of the bank 11 leaves the feed roll 43. Further advancement of the blank 11 along the feed rails 45 is achieved by means of the feed chains 55 trained about sprockets 56 fixed on the same shaft as feed rolls 44 and sprockets 57 and 58 spaced vertically on the vertical frame members 23. The feed chains 55 carry lugs 59 thereon spaced along the chains 55 at a distance slightly greater than the width of a blank 11 which engage the trailing edge of the blank 11 on the feed rails 45 just after it leaves the feed rolls 43 and advance the blank toward forming station 46. During the passage of the blank 11 along the feed rails 45 from the feed rolls 43 to the forming station 46, the blanks pass over an adhesive spraying station 60 where adhesive is sprayed upwardly on the areas 18 of the downwardly facing surfaces of the end walls 13 and 14 of the blank 11 in properly timed relation in a manner which will be hereinafter described in greater detail.

A turret mechanism, generally indicated at 61, receives the individual blanks 11 at the forming station 46 and advances then in a cylindrical path below the plane of the feed rails 45 to the point of ejection of the erected blanks. The turret mechanism 61 includes a plurality of turret form units 62 about which the blanks 11 are folded to form the erected container by a former head unit generally indicated at 63. The turret form units 62, six of which are provided in this embodiment, are adjustable to adapt them to different size blanks. Since the several form units 62 are identical, a detail description ofone will suffice.

Each turret form unit 62 comprises terminal formations on a pair of the radial legs 64 of a pair of spiders 65, 66 which are keyed on a turret shaft 67 journaled on the frame members 22 for sliding movement along the shaft 67. A central spider 68 is locked on the shaft 27 at its center and worm screws 69 having oppositely pitched thread sections are threaded into legs 64 of the turret spiders 65, 66 and rotatably journaled against axial displacement in the central spider 6S. Sprockets 70 on the worm screws 69 and a chain 71 trained about the sprockets 7t coordinate the rotation of the several worm screws 69, and a crank extends from one of the worm screws 69 to permit adjustment of the spacing between the turret spiders 65, 66.

The legs 64 of each turret spider terminate in a bifurcate jaw 72 forming jaw plates 73, the jaw plates 73 being of an appropriate size to provide forms about which the end walls 13, Here folded downwardly at their hinge connections with the bottom panel 12. The outwardly disposed upper corners of the jaw plates 73 are spaced slightly less than the width of the end' walls 13, 14 and adjustable side' forms 74'are supported by bolt and slot connections with suitable extensions of the jaws 72 ex-' tending inwardly of the turret. The side forms may be made of angle irons and are adjustable laterally of the blank to conform to the width of the bottom'panel 12,

7 while the spiders 65, 66 are adjusted by the worm screws 69 to conform the spacing between the jaws 72 to the a length ofgthe bottom panel 12. a Y

Pivoted clamping jaws 75 locked 'on pivot pinj76', and

having resilient pads 77 facing the jaw plates 73, cooperate with the jaw plates 73 to selectively hold the hinge flaps 17 in contact with the adhesive coated areas 18 of theend walls 13, 14 during the adhesive setting cycle of the machine. The pivot pins are journaled on the jaws 72 and have trip lugs 78 projecting outwardly of the turret to be actuated by suitable trip means to pivot the clamping jaws 75 away from the jaw plates 73. The clamping jaws 75 are resiliently biased to clamping position by the springs 79.

The clamping jaws 75 on each turret form unit 62 are held open in properly timed relation with the descent of the former head unit 63 when the form unit 62 is at the forming station by clamp trip levers 80 at each side of the turret which are coupled by connecting rods 81 to cam follower levers 82 controlled by suitable cams on the main drive shaft 26 The feed chains do not extend sufficiently far toward the discharge end of the frame 2 .0 to deliver the blanks 11 fully to the forming station 46 into proper registry with the form unit 62 at the forming station. The last phase of advancement of the blanks 11 to the forming station is produced by feed arms 83 keyed to and depending from shaft 84 journaled on the frame 21]. The lower ends of the feed arms 83 have a suflicient stroke to advance the blanks 11 by engagement with their trailing edges immediately after the latter leave the feed chain 55 over the remaining'distance to the forming station 46. A suitable stop plateor the like is provided on the frame to abut the leading edge of the blank 11 when it reaches a position of proper alignment with the turret form unit 62 and prevent further horizontal advancement. The feed arms 83 are oscillated by a lever 85 also keyed on shaft 84, a connecting rod 86 and a cam follower lever 87 controlled by another cam on the main drive shaft 26. a

The former head unit 63 which folds the blank 11 downwardly upon theturret form unit 62 at the forming station comprises a frame 88 fixed to the lower end of a slide bar 89 supported in a vertical guide bracket 90 on the frame 20. The former'head frame 88 is driven by a lever 91 coupled at one end to the slide bar 89 by a link 92 and at the other end to' a cam follower lever 93 by a connecting rod 94 to be controlled by a suitable cam on the main drive shaft 26. A pair of posts rising from the former head frame 88 at each end thereof have rods 95 fixed therein. Locked on the rods 95 are central fingers 96 to engage and fold downwardly the end Walls 13, 14 and flanking fingers 97 to engage and begin folding the hinge flaps 17. It will be noted that the inwardly convex bows inthe fingers 97 engage and commence folding the hinge flaps 17 of the blank some time before the bows in central fingers 96 engage and commence folding the end walls 13, 14. Additional posts on the former head frame 88 journal at each side thereof a rod 98 on which side wall folding paddles 99' are locked by set screws or the like. The rods 98 and paddles 99 are rocked from a downwardly diverging position toward the center of the frame 88, to fold down the side walls 15, 16 of the blanks 11 by toggle links 161 locked at their" outer ends to the rods 98 and pivoted together at their center.. The toggle links 101 normally converge downwardly when the former head unit is at its upper position, and are connected at their center to an anchor on the frame 20 or guide bracket by connecting rod 102', by which the center of the links 101 is drawn upwardly relative to the outer ends of the links to an upwardly converging position during descent of the former head 63, thus pivoting the depending paddles 99* at opposite sides toward each other to fold the side walls 15, 16. The paddles 99 are of such length and the timing of their movement inwardly is such that they engage the side walls 15, 16 of the blank and commence their folding function when the flanking fingers 97 have folded the hinge flaps 17 downwardly a substantial extent toward vertical position and the central fingers 96 then engage and fold the end walls 13, 14 upon the inwardly folding hinge flaps 17. The fingers 96, 97 and paddles 99 are linked on their associated rods 95, 98 by set screws to permit ready adjustment of their positions to conform to different blank sizes that may be encountered.

During ascent of the former head unit 63 from its lower position, the clamp trip levers 80 are rocked upwardly by their cam to release the clamping jaws 75 on the turret form unit 62 at the feed station to be drawn by their springs 79 to clamping position wherein the end walls 13, 14 and their underlying hinge flaps 17 are tightly gripped. The turret spiders 65, 66 are rotated intermittently by a suitable Geneva drive mechanism on the turret shaft 67. Upon release of the clamping jaws 75 to clamping position, the associated turret form unit 62 is advanced in stepwise fashion to the next five stations about the turret 61 a new blank 11 being formed on a succeeding form unit 62 at the forming station during each pause of the turret.

The fifth turret station following the forming station 46 is the ejector station, designated by the reference character 103. The ejector station 103 includes a reciprocative rectangular frame 104 slidably supported for movement along the radial axis of the turret at the ejector station on guide members 105. The frame 104 has adjustable cross-plates 106 spaced to embrace the end walls 13, 14 of the erected blank 11 and carrying depending, pawl-like spring fingers 107, the total depth of the cross-plates 106 and fingers 107 corresponding to the depth of three containers formed from the blanks 11.

An ejector trip arm 108 is pivoted to the main frame 20 at each side of the ejector station 103 to engage the trip lug 78 on the clamping jaw 75 of a form unit 6 2 when it is advanced to the ejector station and withdraw the clamping jaws 75 from clamping position. The trip arms 108 are controlled by lever 109 coupled through connecting rod 110 to the arm 111 of cam follower lever 82 riding on a cam on the main drive shaft 26.

The ejector frame 104 is reciprocated along the guide members 105 by levers 112 linked by connecting rods 113 to cam follower levers 114. When the clamping jaws 75 are drawn outwardly of the trip arms 108-, the frame 104 descends toward the turret form unit 62 and projects the pointed ends of the fingers 107 by the ends of the container until the shoulders on the fingers snap over the lips of the container. Upon return of the ejec tor frame 104 outwardly, the shoulders on the fingers 107 draw the container off of the form unit 62 and hold it. On the next stroke of the frame 104, the container held between the fingers 107 is forced a distance equal to the depth of a container upward between the side wall of the frame 104 and the cross-plates 106 by engagement with the container on the turret form unit. On the third inward stroke of the ejector frame 104, the first mentioned container is shifted outwardly a like distance, and on the fourth inward stroke of the frame 104, is ejected from between the cross-plates 106.

A stop switch mechanism is provided to disable the feeding system for lift plate 27 when there is no blank 11 at the top of the hopper. This includes a microswitch 115 having an actuating arm 115a which extends into the path of the blank 11 at the top of the hopper, and a solenoid 116 which is energized when the microswitch arm 115a is in elevated position by a blank 11 at the top of the hopper. The solenoid 116 in energized position elevates a pivoted lug 117 out of the path of an mm 118 on the cam follower lever 37 permitting this lever to respond to its associated cam and drive the rock lever 33 to feed the chain 28 and advance the lift plate 27. When there is no blank 11 contacting the microswitch arm 115a, it falls, opening the microswitch 115 and deenergizing the solenoid 116. This releases the lug 117 to fall into the path of the cam follower lever arm 118 and prevent 6 further response of the cam follower lever 37 to its cam, and thus prevent further driving of the chain 28 and lift plate 27 until the microswitch arm a is again elevated by a new supply of blanks 11.

The adhesive spray station 60 includes a pair of spray units 120 adjustably supported on brackets 121 mounted on two of the rails 45 along which the blanks 11 are fed horizontally, the nozzles of the spray units 120 being directed upwardly to spray adhesive from a tank 122 onto the downwardly facing areas 18 of the blank end walls 13, 14. The spray units 120 may be of a pneumatically operated type manufactured by Binks Manufacturing Company, for example, the type disclosed in U.S. Patent No. 2,266,365. The blanks 11 are positioned transversely of the rails 45 to properly align the areas 18 to which adhesive is to be applied with the spray unit nozzles by adjustable guide strips 123.

The spray units 120 are actuated in properly timed relation to the feeding of the blanks 11 along the rails 45 by a cam follower lever 124 which is periodically tripped by adjustable lugs 125a bolted on a cam 125 on the main drive shaft 26, the arm 124a of the lever 124 being thereby elevated to depress the plunger of a valve 126 to open the valve 126 and force adhesive in the line from the tank 122 through the nozzles of spray units 120. In order to prevent actuation of the spray units 120 when there is no blank 11 at the spray station 60, means are provided to prevent operation of the valve 126 by the cam follower lever arm 124a. This means comprises a microswitch 127 having a trip arm 128 positoned to be depressed by a blank 11 at the spray station 60 and a solenoid 129 controlling a bellcrank latch 130. The valve 126 is supported on a plate 131 pivoted on a pin 132 fixed to the frame 20, the plate 131 has a projection 133 which is held by the latch 130 when the solenoid 129 is energized by depression of the microswitch arm 128. This holds the plate 131 against counterclockwise rotation about the pin 132 so that the valve 126 is held against displacement when contacted by the cam follower arm 124a and its plunger is actuated to cause discharge of adhesive by the spray units 120. However, when there is no blank 11 at the spray station 60, the microswitch trip arm 128 is elevated, the solenoid 129 is deenergized and the latch 130 is thereby rocked out of holding engagement with the plate projection 133-. The valve 126 and plate 131 are then free to rock upwardly when the valve is engaged by the cam follower arm 124a and the valve 126 remains closed preventing actuation of the spray units 120.

While but one embodiment of the present invention has been shown and described, it is apparent that mod-ifications may be made in the invention without departing from the spirit and scope thereof, and it is desired, therefore, that only such limitations shall be placed thereon as are imposed by the prior art and are set forth in the appended claims.

What is claimed is:

1. Apparatus for setting up flat container blanks of the type having a bottom panel and side and end panels hinged thereto adapted to be folded into perpendicular relation to the bottom panel and flaps hinged to said panels and forming longitudinal extensions thereof adapted to be folded inwardly into underlying relation to said end panel and adhered thereto, comprising a forming station, hopper means for a stack of flat blanks, means for transferring the flat blanks one at a time from said hopper means to said forming station, means for applying liquid adhesive to surface portions of said end panels during transfer of the blanks from said hopper means to said forming station, means at said forming station for folding said side panels and end panels into substantially perpendicular relation to said bottom panel about the hinged connections therewith, turret means supported for rotation about a horizontal axis located below said forming station, said turret means having a plurality of radial arms radiating from said axis and blank supporting members carried by said radial arms at the outer ends thereof in a cylindrical path concentric with said axis, a plurality of circumferentially spaced stations for said blank supporting members uniformly disposed along said cylindrical path, one of said stations being a blank receiving station at said forming station wherein said blank supporting members are positioned to receive blanks one at a time from said feeding means, means for rotating said turret means in stepwise fashion about said horizontal axis to intermittently advance said supporting members along said cylindrical path through said spaced stations, means for gripping said flaps in contact with the liquid adhesive surface portions of said end panels at said forming station and maintaining the same in said gripping condition throughout intermittent advancement of said supporting members through a plurality of said spaced stations, and ejecting means located at one of said spaced stations disposed several stations from the blank receiving station for discharging the blanks from said blank supporting members.

2. Apparatus for setting up flat container blanks of the type having a bottom panel and side and end panels hinged thereto adapted to be folded into perpendicular relation to the bottom panel and flaps hinged to said panels and forming longitudinal extensions thereof adapted to be folded inwardly into underlying relation to said end panel and adhered thereto, comprising a forming station, hopper means for a stack of flat blanks, means for transferring the flat blanks one at a time from said hopper means to said forming station, means for applying liquid adhesive to surface portions of said end panels during transfer of the blanks from said hopper means to said forming station, turret means supported for rotation about a horizontal axis located below said forming station, said turret means having a plurality of radial arms radiating from said axis and blank form members carried by said radial arms at the outer ends thereof in a cylindrical path concentric with said axis, said blank form members having forming surfaces about which the blanks are to be folded at the forming station to locate the side and end panels in perpendicular relation to the bottom panel, former head means at said forming station for folding said flaps downwardly about their hinges and then folding said side and end panels into substantially perpendicular relation to said bottom panel about the forming surface of said form members to dispose said flaps in underlying contact to the adhesive bearing surface portions of said end panels, releasable clamping means carried by said form members for clamping said flaps in intimate contact with the adhesive bearing surfaces of said end panels, said form members having a plurality of circumferentially spaced stations uniformly disposed along said cylindrical path, one of said stations being a blank receiving station located at said forming station, means for rotating said turret means in stepwise fashion about said horizontal axis to intermittently advance said form members along said cylindrical path through a plurality of intervening spaced stations to an ejector station located several stations from said blank receiving station, the travel of form members through said intervening stations providing an adhesive setting cycle of selected length, ejecting means located at said ejecting station for discharging the blanks from said form members, means for actuating said clamping means to release them from gripping relation with the blanks at said blank receiving station and at said ejecting station and means retaining said clamping means in gripping relation with said blanks when said form members are disposedbetween said blank receiving station and said ejecting station. a

3. In apparatus for setting up fiat container'blanks, the combination recited in claim 2 wherein said turret means comprises a pair of spiders adjustably supported for movement toward and away from each other axially of a horizontal supporting shaft, said spiders including said radial arms and end form members carried by each of said radial arms, the end form members on said radial arms being arranged in laterally aligned pairs defining the position of the fold lines for the opposite end panels of each blank, and means interconnecting said spiders for adjusting the spacing between them to adjust the opening between said end form members for selected blank sizes.

4. The combination recited in claim 3 wherein said means for adjusting the spacing between said spiders includes worm screws threadedly interconnecting a plurality of pairs of laterally aligned radial arms of said spiders, and means interconnecting all of said worm screws for synchronizing rotation of all of the worm screws.

5. The combination recited in claim 2, wherein said means for applying liquid adhesive comprises a pair of spray guns disposed to discharge adhesive onto selected surface areas of the blanks as they are being transferred from said hopper means to said forming station, valve means for actuating said spray guns to discharge adhesive, and means for periodically actuating said valve means in timed relation to the travel of blanks to said forming station to cause discharge of adhesive onto said selected surface areas.

6. The combination recited in claim 2, wherein said hopper means comprises a pair of inclined frame members, a lift plate for supporting a stack of blanks, means for slidably supporting said lift plate in cantilevered form from said frame members, and indexing means for advancing said lift plate upwardly along said frame members in time relation to the advancement of blanks by said transferring means. V

7. Apparatus for setting up flat container blanks of the type having a bottom panel and side and end panels hinged thereto adapted to be folded into perpendicular relation to the bottom panel and flaps hinged to said panels and forming longitudinal extensions thereof adapted to be folded inwardly into underlying relation to said end panel and adhered thereto, comprising a forming station, hopper means for a stack of flat blanks, means for feeding the flat blanks one at a time from said hopper means to said forming station, turret means supported for rotation about a horizontal axis located below said forming station, .said turret means having a plurality of laterally aligned pairs of radial armsradiating from said axis and blank form means comprising a blank form subassembly carried by each of'the radial arms of each pair thereof in a cylindrical path concentric with said axis, said blank form subassemblies each having a stationary end-forming plate about which the end panels of the blanks are to be folded downwardly at the forming station to locate theend panels in perpendicular relation to the bottom panel, former head means at said forming station for folding said flaps downwardly about their hinges and then folding said side and end panels into substantially perpendicular relation to said bottom panel about the forming plate of said form subassemblies to dispose said flaps in underlying contact to'the adhesive hearing surface portions of said end panels, releasable clamping jaws pivotally mounted on said form subassemblies relative to said end forming plates coacting with said plates to clamp said flaps in intimate contact with the adhesive bearing surfaces of said end panels, said form I 9 of form means through said intervening stations providing an adhesive setting cycle of selected length, ejecting means located at said ejecting station for discharging the blanks from said form members, means for actuating said clamping jaws to release them from gripping relation with the blanks at said blank receiving station and at said ejecting station, and means retaining said clamping jaws in gripping relation with said blanks when said form subassemblies are disposed between said blank receiving station and said ejecting station.

8. Apparatus for setting up flat container blanks of the type having a bottom panel and side and end panels hinged thereto adapted to be folded into perpendicular relation to the bottom panel and flaps hinged to said panels and forming longitudinal extensions thereof adapted to be folded inwardly into underlying relation to said end panel and adhered thereto, comprising a forming station, hopper means for a stock of fiat blanks, a plurality of laterally spaced guide rails defining a planar horizontal feed path from said hopper means to said forming station, transfer means for transferring the uppermost blank from the stock of blanks to said guide rails, feed means for advancing the blanks one at a time along said feed path to said forming station, an adhesive applying station along said path between said hopper means and said forming station, means at said adhesive applying station for applying liquid adhesive to longitudinally spaced, downwardly facing surface portions of the end panels while the blanks are in motion along said feed path, turret means supported for rotation about a horizontal axis located below said forming station, said turret means having a plurality of radial arms radiating from said axis and blank form members carried by said radial arms at the outer ends thereof in a cylindrical path concentric with said axis, said blank form members having forming surfaces about which the blanks are to be folded at the forming station to locate the side and end panels in perpendicular relation to the '10 bottom panel, former head means at said forming station for folding said flaps downwardly about their hinges and then folding said side and end panels into substantially perpendicular relation to said bottom panel about the forming surface of said form members to dispose said flaps in underlying contact to the adhesive bearing surface portions of said end panels, releasable clamping means carried by said form members for clamping said flaps in intimate contact with the adhesive bearing surfaces of said end panels, said form members having a plurality of circumferentially spaced stations uniformly disposed along said cylindrical path, one of said stations being a blank receiving station located at said forming station, means for rotation said turret means in stepwise fashion about said horizontal axis to intermittently advance said form members along said cylindrical path through a plurality of intervening spaced stations to an ejector station located several stations from said blank receiving station, the travel of form members through said intervening stations providing an adhesive setting cycle of selected length, ejecting means located at said ejecting station for discharging the blanks from said form members, means for actuating said clamping means to release them from gripping rela- References Cited in the file of this patent UNITED STATES PATENTS 1,607,728 Diskin Nov. 23, 1926 1,764,632 Kachline June 17, 1930 2,268,283 Harris et al. Dec. 30, 1941 2,834,261 Goss May 13, 1958

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