US3032074A - Wirebound box end attaching machine - Google Patents

Description

May 1, 1962 R. RICE ETAL WIREBOUND BOX END ATTACHING MACHINE 8 Sheets-Sheet 1 Filed May 13, 1960 B %N% 0% QwN QQN NNN QNN INVENTOR R/chard L. Rice Char/es 0. Hiker wfi Now www A Q 3M 3M QM EN EN k iHm a M a ma y 1962 R. RICE ET AL 3,032,074

WIREBOUND BOX END ATTACHING MACHINE Filed May 15, 1960 8 Sheets-Sheet 2 May 1, 1962 R. L. RICE ETAL WIREBOUND BOX END ATTACHING MACHINE Filed May 13, 1960 8 Sheets-Sheet 3 ATTORNEYS.

y 1962 R. L. RICE ET AL 3,032,074

WIREBOUND BOX END ATTACHING MACHINE Filed May 13. 1960 8 Sheets-Sheet 4 ATTORNEYS.

May 1, 1962 R. L. RICE ET AL WIREBOUND BOX END ATTACHING MACHINE 8 Sheets-Sheet 5 Filed May 13, 1960 Char/es 0. Rl/rer W, M 0 W ATTORNEKS y 19-62 R. L. RICE ET AL 3,032,074

WIREBOUND BOX END ATTACHING MACHINE Filed May 13, '1960' 8 Sheets-Sheet- 6 11v TQR.

Ric/2 ard L. R 09 Charles 0. Elmer W, M w

ATTORNEYS.

May 1, 1962 R. RICE ET AL WIREBOUND BOX END ATTACHING MACHINE 8 Sheets-Sheet 7 Filed May 13, 1960 3,632,674 WIEEBOUND REX END ATTACHING MaCIIINE Richard L. Rice, Mountain Lakes, and Charles 0. miter, Morristown, NI, assignors to tapling Machines Co., Rockaway, NR, a corporation of ilbelaware Filed May 13, 196d, Ser. No. 29,033 8 Claims. (Cl. 146-93) This invention relates to a machine for attaching box ends to wirebound box and crate blanks.

The conventional wirebound boxes and crates to which the present invention relates are formed from box blanks having four sections or sides, each composed of face material or slats with reinforcing cleats stapled thereto, with the several sections foldably' secured together by bind ing wires extending lengthwise of the blank and secured to the blank by staples driven astride the binding wires, through the face material and into the cleats. The two ends of each binding wire are provided with loop fasteners which project from the ends of the blank, and when the blank is folded around to set up the box, these loops come into opposition with each other at the closing corner of the box and one of them, being somewhat narrower than the other, is inserted through the latter and bent down against the outer face of the box to secure the box closed.

The box ends are similarly formed of side material or slats with reinforcing battens or liners stapled thereto and are secured to the box blank by loop fasteners formed at the ends of binding wires stapled to the box ends, these loops being inserted through notches in the outside cleats of the front and rear sections of the box blank and bent around the outside binding wires. i

To save space and permit handling of the box blanks in multiple, they are usually shipped and stored knocked down or fiat, with the two box ends foldably secured at one edge to opposite edges of the front and rear side sections of the blankand lying flat against the inner faces of these sections.

The invention illustrated and described herein relates to machines for manufacturing wirebound box and crate blanks and particularly to machines for automatically attaching the box ends to such blanks.

U.S. Patent No. 2,772,700 discloses a machine for attaching ends to wirebound box blanks, in which the box blank, after being delivered from the loop fastener machine, was automatically rotated to place its cleated side up and presented to a pair of transversely spaced stations incorporating box end attaching mechanisms. Although most of the end attaching operation was performed automatically, there still remained the necessity of having a person at each box end attaching station manually position the box ends before they could be secured to the box blank.

The machine embodying the present invention performs all of its operations automatically and is designed to cooperate with wirebound box manufacturing machines of the type disclosed in United States Patents No. 2,161,- 200 and No. 2,304,510, to complete the finaltoperation of a continuous production line in the manufacturing of wirebound box blanks, by automatically inserting and attaching to the box blanks box ends having one or more binding wires with loop fasteners at their projecting ends.

The present machine is positioned adjacent the output side of and in longitudinal alignment with a loop fastener forming machine whose conveying mechanism delivers each successive box blank a sufiicient distance outwardly for it to be engaged by the infeeding means of the box end attaching machine. During the continued movement of the box blank within the end-attaching machine, it is engaged by a second or auxiliary conveyor and further moved to a predetermined point where it is automatically 3,032,074 Fatented May I, IfitiZ positioned and held fixed momentarily while a pair of box. ends are simultaneously attached to it.

The box blank with its attached ends is then released and removed from the machine by the auxiliary conveyor which operates at a much faster rate of speed than that of the infeeding conveyor means, thus preventing any interference with the next following box blank being received from the loop fastenermachitie.

In the drawings:

FIGURE 1 is a somewhat diagrammatic longitudinal side elevation showing the complete left-hand side ofa machine embodying features of the present invention, and a portion of an associated loop fastener forming machine with which it has a suitable driving connection and from which it receives box blanks.

FIGURE 2 is a top plan view of the machine shown in FIGURE 1.

FIGURE 3 is an enlarged sectional view taken on the line 3-3 of FIGURE 2, showing means for properly 1ocating the box blank prior to attaching the box ends thereto.

FIGURE 4 is a top plan view of a portion of the mechanism shown in FIGURE 3, as viewed from the line 4 4 in said FIGURE.

FIGURE 5 is an end elevation of the machine as viewed fromthe end appearing at the right-hand side of FIG- URE 2.

FIGURE 6 is an enlarged sectional view taken on the line 66 of FIGURE 5.

FIGURE 7 is a view on the same scale as FIGURE 6 showing the mechanism appearing in that FIGURE, as viewed from the opposite side.

FIGURE 8 is an enlarged view taken on the line 8 S of FIGURE 6.

FIGURE 9 is an enlarged sectional view taken on the line 9-9 of FIGURE 6.

FIGURE 10 is a top plan view, on a smaller scale, of one of the two conveying units of the machine which carry the box end units to their point of attachment to the box blanks.

FIGURE 11 is an enlarged sectional view'taken on the line l1-I1 of FIGURE 10.

FIGURE 12 is a schematic wiring diagram of the control circuit of the machine.

FIGURE 13 is a perspective view of a box end unit.

FIGURE 14 is a perspective view of the underside of a wirebound box blank showing a pair of box end units attached thereto.

The general, construction of the present machine is shown in FIGURES l, 2 and 5. As may be seen in these FIGURES, the machine includes an open bed frame 2 with supporting legs 4, a pair of spaced, longitudinal rails 6 and 8 to support and guide the work, a rubber tired infeed wheel 10, a rubber tired stabilizing wheel 12, an auxiliary conveyor M which moves the Work within the machine, a pair of loop fastener bendingunits T and T spaced apart longitudinally of the machine and mounted at opposite sides of the frame 2, and a pair of box- end conveying units 0 and 0 for conveying box ends thereto.

Box Blank Conveying M eclzanism With further reference to FIGURES 1, 2 and 5, and particularly to FIGURE 1, it will be seen that the present machine is positioned adjacent the output side ofthe loop fastener machine U whose drive sprocket U keyed to the drive shaft U provides a source of power to rotate the lower shaft 14 of the present machine, through a chain 16 which is trained about drive sprocket U and about a sprocket I8 keyed to shaft 14. To impart the desired clockwise rotation to the upper shaft 2% and to the infeed wheel 1d keyed thereto, a suitable driving connection is provided by a spur gear 22 keyed to lower shaft 14, a

spur gear. 24 meshed therewith, an intermediate short shaft 26 which fixedly supports gear 24, a pulley 30 also keyed to shaft 26, a belt 28 trained about pulley 30 and about a pulley 32 of an over-running clutch 34 keyed to upper shaft 20.

As shown in FIGURES 1, 2 and 5, the ends of lower shaft 14 are journaled in the outwardly projecting ends of an H-shaped assembly having a pair of spaced arms 35 and 36, whose inner ends are pivotally supported on a rod 37 extending through brackets 38 fastened to the frame 2 of the machine.

The ends of the intermediate short shaft 26 are journaled in an upwardly extending portion at the outer end of the arm 36 and in the lower end of an inverted L- shaped assembly 39 (FIGURE fixed to the upper end thereof.

As best shown in FIGURE 2, the upper shaft 26 is journaled in another H-shaped assembly having a pair of arms 44) and 41 whose inner ends are pivotally supported on a rod 43 extending through brackets 42 fastened to the outer face of the loop bending unit T The two H-shaped assemblies are interconnected by an adjustable tie rod 44 which causes them to move in unison, while permitting adjustment of their spacing from one another. The two assemblies normally rest upon adjustable stop bolts 46 and 48 (FIGURE 1) which extend through brackets 5t and 52, respectively. However, the pivotal mounting of the two assemblies permits infeed wheel to ride up and onto an incoming box blank while its weight and that of the associated assemblies impose sufficient downward pressure on the box blank to drive it at the same speed as that at which it is delivered by the loop fastener machine U.

To stabilize the box blank as it is being fed up the infeed Wheel 16, there is provided the rubber tired wheel 12 (FIGURES 2 and 5) which is rotatably supported on a bolt 56 secured on an arm 58 of support member 60. This wheel 12 engages the side of the box blank opposite to that engaged by infeed wheel 16 at a point slightly farther along the path of the box blanks. The wheel 12 rests yieldably upon the upper surface of the box blank and prevents its being tipped upwardly by the downward pressure of the drive wheel 10 on the opposite side.

The auxiliary conveyor M operates at a much faster rate of speed than that of infeed wheel It), and upon its engagement with the leading edge of the box blank, is permitted to withdraw the blank from the normally slower turning infeed wheel Ill due to the action of the over- -running clutch 34. The angle member 62 which supports the mechanism of the conveyor M is oriented like an inverted L, and its upper horizontal flange 64 supports near its right-hand end (FIGURES 2, 6 and 7), an upstanding bolt 66 whose upper end is retained in a slotted bracket 68 attached to thee outer face of loop bending unit T A compressoin spring 76 coiled about the shank of said bolt and interposed between the undersurface of bracket 68 and the head of bolt 66 allows the receiving end of auxiliary conveyor M to yield upwardly as the box blank arrives beneath it.

As shown in FIGURES 1, 2, 6 and 7, the active conveying element of the conveyor M is a rubber belt 72, which is trained about a pulley 74 rotatably supported on a bolt 76 carried by the right-hand end of the depending flange 78 of angle member 62, and about a pulley 80 of much larger diameter which is fixed on a sleeve 82 rotatably supported on a stationary shaft 84. As shown in FIGURE 2, the inner end of the shaft 84 is supported in a block 86 mounted on the upper surface of the lefthand end of angle member 62, while its outer end is supported in a block 94 secured at the upper face of an L-shaped frame 92 which projects outwardly from the left-hand end of the angle member 62.

As shown in FIGURE 1, positioned between and in alignment with pulleys 74 and 86 are a pair of freely rotating pulleys 88 rotatably supported on arms 9-9 pivotally fastened to the outer face of depending flange 73, these pulleys bearing upon the lower run of rubber belt 72 and serving to maintain it in pressure engagement with the box blanks throughout its full extent.

To impart the desired clockwise rotation to pulley and thereby to belt 72, a belt 96 is trained about a pulley 162 fixed on the sleeve 82, and about the pulley 98 of a gear motor 190 which is mounted on a bracket 99 adjustably cantilevered from a threaded rod 101 suspended from the frame 2. by a clamp 163.

For adjustably supporting the left-hand or delivery end of auxiliary conveyor M at the desired height, there is provided, as shown in FIGURE 1, a pair of upstanding posts 194 mounted on frame 2, these posts 164 having pivotally attached to their upper ends a pair of spaced arms 106 whose free ends loosely support a stationary shaft 84, with the arms 1G6 resting upon adjustable bolts 108 threaded in brackets 110 carried by the posts 104. This arrangement permits the pulleys 162 and the lefthand or output end of the belt 72 to float upwardly to accommodate box blanks of varying thickness, while maintaining pressure feeding engagement with them.

As best shown in FIGURES 1, 2 and 5, the rails 6 and 3 at opposite sides of the machine are supported at the proper height by upstanding posts 1126 mounted on cross braces 122 of the frame 2. The rails 6 and 3 extend outwardly a sufficient distance toward the loop fastener machine U to receive box blanks thereon as they are fed from said machine (FIGURES 1 and 2). As may be seen in FIGURES 5, 8 and 9, the rail 6 and 8 have secured to the upper portion of their inner faces angle members 124 whose vertical flanges engage and guide the inner faces of the cleats 186" at opposite longitudinal edges of the box blanks.

Conveyor Control Mechanism As may be seen at the left-hand side of FIGURE 1, secured to the upper ends of the posts 166 is a horizontal plate member 112 which extends outwardly to the left of the posts and has attached to its undersurface a solenoid S whose plunger actuates an arm 114, which is pivotally supported on the outer post 104. The arm 11.4 has rotatably mounted at its right-hand end a small roller 116 which is normally urged into engagement with the belt 96 by a spring 113 which is tensioned between the opposite end of the arm 1% and the frame 2, the roller 116 thus maintaining the belt 96 under tension to drive the auxiliary conveyor M. However, when the solenoid S is energized, its plunger rotates the arm 114 in a clockwise direction against the resistance of the spring 118 to release the tension on the belt 96 and cause it to run loosely about the pulley 162, thereby stopping the driving of the conveyor M.

The solenoid S is controlled by a switch H, which is shown in FIGURE 2, this switch H being actuated by the leading edge of a box blank, as indicated by broken lines W, when the box blank has been moved within the machine by the auxiliary conveyor M to the point where it contacts a spring finger 166, causing a stud 168 threaded therethrough to actuate the plunger of the switch H. The switch H and the spring finger 166 are mounted on a bracket 170 adjustably attached to the lower portion of rail 6.

As may be seen in FIGURE 12, the switch H is a normally open, single-pole, single-throw switch, which is closed when the spring finger 166 (FIGURE 2) is engaged by the leading edge of the box blank and which, when closed, will energize the solenoid S from the power lines 115 and 117 through the normally closed switches C, G and F. As shown in FIGURE 1, and as previously described, energization of the solenoid S moves arm 114 against the resistance of spring 118 to withdraw the roller 116 from engagement with belt 96, thereby permitting the belt to become slack and stopping the feeding of the box blank.

Box Blank Locating Mechanism As may be seen in FIGURE 7, the outer face of the left-hand rail 6 has formed in it a shallow vertical groove 128 which serves as a slideway for a wedge-shaped locator 130. As may be seen in FIGURES 3 and 4, a similar wedge-shaped locator 132 is mounted at the outer face of the right-hand rail 8, said locator 132 being guided in its vertical movement by a bar 134 which projects upwardly from a clamp member 136 adjustably mounted on a longitudinal bar 138 spaced beneath and supported by rail 8.

Shown also in FIGURES 2, 3 and 4 is a clamp member 140 which is also adjustably mounted on bar 138 and which supports a rectangular platform 142. Secured to the under-surface of the platform 1.42 adjacent its right-hand end, as viewed in FIGURE 3, is a boss 144- through which a vertical shaft 146 is loosely received. Fastened to the lower end of shaft 146 is a collar 143 supporting an irregularly shaped lever 150, and adjustably mounted on the upper end of shaft 146 is a collar 152 from which fingers 154 and 156 project at right angles to one another (FIGURE 4). The horizontal finger 154 has threaded through its outer end a stud 158 which actuates the plunger of an eletcric switch F mounted on the upper surface of table 142, while the downwardly extending finger 156 has interposed between its lower end a lug 160 projecting from table 142, a compression spring 162 which serves to maintain the elements assembled on shaft 14% normally in a counterclockwise position as determined by a stop screw 164.

Even after the driving of the conveyor belts has been stopped by engagement of the leading edge of the box with the spring finger 166 (FIGURE 2) which actuates the switch H, as previously described, the box blank will coast to the point where it contacts the irregularly shaped lever 150 (FIGURE 4-) at the opposite side of the machine. This coasting movement of the box blank is desirable and is made possible by the relative positioning of the spring finger 166 and the irregularly shaped member 150, both of which are adjustably mounted in the machine.

Depression of the irregularly shaped lever 150 by the box blank will impart clockwise rotation to shaft 146 and collar 152 to cause stud 158 on finger 156 to actuate electric switch F.

As may be seen at the upper left in FIGURE 12, the switch F is a single-pole, double-throw switch which is normally in the position shown in full lines. When it is actuated by the engagement of the leading edge of a box blank with the lever 150 (FIGURE 2), it is thrown to the position shown in broken lines, energizing a solenoid valve 1,. As may be seen at the bottom of FIG- URE 7, the solenoid valve J controls the supply of compressed air from the line 171 to an air cylinder 172 fastened to an arm 174 extending from an upstanding post 176 mounted on frame 2. When the solenoid valve I is energized, compressed air is supplied to the cylinder 172, driving its piston upwardly, and forcing the wedge locator 130 upwardly into the opening 178 between the beveled ends of the cleats 180 of the last two sections of the box blank.

As may be seen in FIGURES 3 and 4, the other wedge locator 132, which is mounted on the other rail 8, is actuated by an air cylinder 182 under control of a solenoid valve 1 (FIGURE 4), these parts being secured to the outer face of a plate 184 depending from the clamp 136. As may be seen in FIGURE 12, this solenoid valve I is connected in parallel with the solenoid valve J so that they are simultaneously energized by actuation .of the switch F (FIGURE 2). When the valve I is energized, compressed air is supplied to the cylinder 182, causing it to drive the wedge-shaped locator 132 upwardly into the opening 186 between the beveled ends of cleats 188 of the first two sections of the box blank.

Thus, the box blank is properly located and held fixed for a sufficient length of time to have attached thereto, in the illustrative example, a pair of box ends 0 of the type shown in FIGURE 13, each having stapled to one of its faces two spaced binding wires whose ends are bent to form loop fasteners 0 As shown in FIGURE 14, the fasteners 0 are inserted through notches 190 in the cleats 180 and 18% of the box blank, and are bent around the corners of the box blank to secure the box ends hingedly to the box blank.

End Feeding and Loop Inserting Mechanism To accomplish the operations of feeding the box ends into attaching position beneath the box blank and inserting their loop fasteners through the notches in the cleats, there are provided, as shown in FIGURE 2, two end feeding units 0 and 0 These units are spaced apart longitudinally of the machine, and, as shown in FIGURE 5, their output ends are tilted upwardly and are directed toward opposite sides of the machine in alignment with the loop fastener bending units T and T 2 respectively, which bend the loop fasteners 0 to secure the box ends 0 to the box blank.

The two end feeding units 0 and 0 are adjustable to accommodate box ends of different lengths and are also movable toward and away from their respective loop fastener bending units on their supporting tracks 192 and 194 (FIGURE 2) by means of clamp members 195 and 198 respectively, to accommodate box ends of various widths. The supporting tracks 192 of unit 0 are fixedly supported on the cross braces 122 of the frame 2, while the supporting tracks 1% of unit 0 are attached to cross braces 54 which are slidably clamped to said frame to permit movement longitudinally of the machine to ac commodate various lengths of box blanks. Since the two units 0 and 0 are substantially similar inconstruction, it will sufi'ice to describe only one of them, this being the unit 0 adjacent the receiving end of the machine.

In describing unit 0 reference is made to FIGURES 2, 5, 3, 9 and 10 and particularly to FIGURE 10, which shows its general construction. As may be seen in the latter figure, the unit comprises a rectangular frame 200, which is suitably braced, from the underside of the righthand end of which, as shown in FIGURE 5, there is adjustably suspended a gear motor 202. The motor 202 imparts counterclockwise rotation to a shaft 204 whose intermediate portion is rotatably supported in a bearing 206 (FIGURE 10) through the medium of a belt 208 trained about the drive pulley 210 of motor 2%2 and about a pulley 212 keyed to the shaft 204.

The box ends 0 are fed lengthwise of the unit by a pair of spaced belts 214 (FIGURE 10) trained about pulleys 216 keyed to the shaft 204 and about pulleys 2E8 rotatably supported on bolts 220projecting from the lefthand end of frame 200. In their movement by the belts 214, the box ends are guided laterally by side plates 222 projecting upwardly from members 224 (FIGURE 10) which are adjustably secured on transverse bars 225 to allow for lateraly adjustment of the plates to accommodate various lengths of box ends.

A double-acting air cylinder 225 is centrally positioned on the left-hand portion of frame 200 and fastened to cross braces 223 by clamp members 2340. Adjustably threaded into the free end of the piston 232 of air cylinder 226 and held fixed by lock nut 236 is an extension arm 238 of rectangular cross-section which, as best shown in FIGURE 11, is guided between and held against turning by rollers 240 which are rotatably supported by brackets 242 clamped to a cross brace 243 of the frame 200. To the free end of extension arm 23% is fastened one of the broader faces of transversely extending plate 244 which, as shown in FIGURE ,8, adjustably supports on its reduced portions at each end forked members 245. These forked members 246 have secured to their upper edgese fingers 248 which project rearwardly (to the right, as viewed in FIGURES 8 and 10), to provide support 'Z for a box end as shown in broken lines at X. The box end is held down against the fingers 248 by spring fingers 250 (FIGURE 8) positioned over the belts 214 and fastened to brackets 252 attached to the upper edges of the side plates 222.

Secured to the front faces of the forked members 2% are forwardly projecting fingers 254 upon which the trailing edges of the box ends 0 as shown in broken lines at X are supported when dropped from the forward ends of the belts 214, while the leading edges of the box ends, as shown in FIGURE 8, rest upon an inclined support member 256 which is adjustably fastened to the shelf 126 of the angle member 124 of rail 6.

As may be seen in FIGURES 7 and 8, the aforementioned wedge locator 130 supports an outwardly projecting bracket 258 having a pair of studs 26% and 252 threaded through it at spaced positions. Upon the upward movement of the wedge locator 130, these studs 260 and 262 actuate electric switches R and R which are fastened to an arm 264 projecting laterally from the aforementioned vertical post 176 mounted on the frame 2. It should be noted here that only the switch R is concerned with the particular box end conveying unit 0 being presently described. Th other switch R controls the box end feeding unit 0 on the other rail 8.

Upon the actuation of switch R two operations occur substantially simultaneously: the box blank sections which are to have the box ends 0 attached thereto, are held firmly in position by presser elements, while the conveying mechanisms of the box end feeding units 0 and 0 are caused to move the box ends 0 into proper position at the underside of these box blank sections for the attaching operation. The means for performing these operations will now be described.

As may be seen in FIGURE 12, the switch R is a normally open, single-pole, single-throd switch. Its actuation as above described energizes a solenoid valve K from the secondary of the step-down transformer 265 through the closed contacts D of a relay D which has been previously energized by the actuation of electric switch F. As may be seen in FIGURES 6, 8 and 9, the solenoid valve K controls the supply of air under pressure from a line 267 to an air cylinder 26% mounted on a platform 270 which is secured by a clamp 274 (FIG- URE 8) to a flat bar 272 which forms part of the frame of the loop fastener bending unit T Pivotally secured to a head member 276 at the end of the piston rod of the air clamp 268 is a connecting bar 278 through whose upper end projects the threaded end of an eye bolt 24% which is fixed in the desired longitudinal position relative thereto by lock nuts 282. The eye of belt 23% is loosely mounted on a bolt 284 carried in the upper portion of an irregularly shaped lever 286 fixed on a shaft 288 which is rotatably supported by and projects outwardly from the face of the clamp member 274.

As may be seen in FIGURE 6, a second clamp member 290 similar to the clamp member 274 is positioned a short distance to the right thereof and also rotatably supports the shaft 288. As may be seen in FIGURE 9, the end of shaft 288 which extends beyond clamp member 290 has fixed to it the upper end of a lever 2% composed of a pair of fiat bars of rather thin cross section, held spaced apart by and fixed to a collar 2%. The lower end of lever 292 is pivotally fastened to a body member 296 which carries at its bottom surface a flat shoe 293 which projects to the right and has the forward end portion of its bottom surface beveled upwardly, as shown in FIGURES 8 and 9. The rear portion of the shoe 2% is supported by a pair of links 3% and 362. The upper end of the link 30%) is pivotally supported on a bolt 304 threaded into a bracket 3% projecting upwardly from the clamp member 274, while its lower end is interposed between and pivotally connected to the pair of flat members comprising the outer end of the link 3&2,

:3 the inner end of the link 302 being pivotally connected to the rearward end of body member 296.

Shown in FIGURE 9, in the cutaway portion of the nearer flat member of link 302, is a nut 307 into which is threaded a short bolt 308 which extends through the outer end of the shoe 298. Encircling the body of the bolt 3&8 and interposed between the upper surface of shoe 298 and the nut 34 is a compression spring 310. This spring 310 permits yielding movement of the shoe as necessitated by variations in thickness of the box lanks.

To maintain shoe 298 and its associated linkage in their normal, retracted position, in which they are shown in FIGURE 9, a tension spring 312 is provided, one of its ends being hooked about a stud 314 on link 30% and its other end being hooked about a stud 316 carried by a block 318 mounted on the upper surface of platform 27%).

Two separate units of the type just described are provided at each of the two box end attaching stations to perform the function of clamping the box sections firmly in proper position to receive a box end and, as shown by broken lines Z in FIGURE 8, to serve as a guide to direct the loop fastener 0 on the box end 0 beneath the binding wire Y of the box section and into the notches 1% in the cleats 18d and I38. Since all four of these units are similarly constructed, the foregoing description of only one of them will suffice.

As may be seen in FIGURE 8, the aforementioned irregularly shaped lever 286 has a. depending finger 32th which has pivotally connected to its lower end an elongated link 322 whose opposite forked end is pivotally connected to the lower end of a bent lever 324. The lever 324 is pivotally supported between a pair of arms 326 secured to the adjacent lower corner of a split clamp 328 adjustably secured on the tie rod 33% of the loop fastener bending unit T Lever 324 extends upwardly from its fulcrum into position to engage the adjacent edge of a box end 0 which has been placed, either manually or by automatic dispensing mechanism, upon the horizontal flanges of the spaced angle members 332 (see also FIGURE 6) which are supported on blocks 334 adjustably secured to the cross brace 336 of the loop fastener bending unit T The angle members 332 are so shaped as to form an open chute or slideway which, as shown in FIGURE 2, serves to direct the box ends 0 to the continuously running feed belts 214 of unit 0 Each time the air cylinder 268 is operated by the closure of the switch R a box end 0 is pushed forward by the lever 324 off the horizontal portions of the angle members 332, and allowed to slide down their inclined portions onto the belts 214, which move it to the position shown by broken lines X in FIGURE 8.

As may be seen in FIGURE 12, the closure of the switch R also energizes the solenoid valve K which is incorporated in the double-active air cylinder 226 (FIG- URES 2 and 10) so that compressed air from the line 339 drives the piston 232 of the air cylinder 226 outwardly.

The air cylinder 226 furnishes power for the final portion of the movement of the end 0 into its position of attachment. As the piston 232 of cylinder 226, with its extension arm 238 and the associated elements, move outwardly toward the rail 6 (FIGURE 8), the leading edge of the box end 0 rides up the support member 256. With continued movement of the box end 0, the projecting loop fasteners 0 contact other upwardly inclined guide members 338 (FIGURES 6 and 8) which are adjustably mounted on the shelf 126 of angle member 124 of rail 6, each of the guide members 338 having a recessed portion 346 in its upper end (FIGURE 6) which is generally funnel shaped to direct the fasteners into and through the notches in the cleats 18%) and 188 and beneath the binding wire Y. During this operation, the box section is backed up by rollers 342 (FIG- R URES 7 and 8) rotatably mounted on bolts 341 projecting upwardly from brackets 343 secured to the outer face of rail 6.

As shown in FIGURES 8 and ll, during the final portion of the outward movement of piston 232 a collar 234 adjustably threaded thereon actuates an electric switch L (FIGURES 8 and 11) fastened to a depending flange 344 of the aforementioned bracket 232. As may be seen in FIGURE 12, the switch L is a single-pole, double-throw switch; when it is actuated by the collar 234 as described, it is thrown from the position in which it is shown in full lines to its alternate position, shown in broken lines, breaking the circuit to solenoid valve K (FIGURES 6, 7 and 8), allowing the parts actuated by the air cylinder 268 to return to their original positions.

As shown in FIGURES 8, 10 and 11, as piston 232 reaches the end of its outward movement, the collar 234 thereon actuates an electric switch P mounted on a plate 359 carried by the bracket 242. As may be seen in FIGURE 12, the switch P is a normally closed, single-pole, single-throw switch. Its actuation as just described opens it to de-energize the solenoid valve K stopping the outward advance of piston 232 of cylinder 226 (FIGURES 2 and 10).

Loop Bending Mechanism As may be seen in FIGURE 12, the actuation of the electric switch L to its alternate position also energizes a solenoid valve K which is incorporated in an air cylinder 354% (FIGURES 7 and 9) the lower end of which is pivotally mounted on a bracket 356 attached to frame 2. The energization of solenoid valve K as described causes compressed air to be supplied from a line 3537 to drive the piston 3W2 of the cylinder 354 upwardly The piston 352 of the cylinder 354 has adjustably threaded onto its outer end a clevis 358 to which is pivotally attached an arm 36% projecting obliquely downwardly from a block member 362 which is rotatably supported on a short shaft 364 the two ends of which are respectively supported in an upstanding end portion 365 of a bracket 368 and in the right-hand wall of the loop fastener bending unit T The block member 3262 supports an upstanding flange 376 which has pivotaliy attached to its upper end one end of an adjustable link 378 the opposite end of which is pivotally fastened to a lever 33f) keyed to a rock shaft 382 whose ends are journaled in bosses (FIGURES 2 and 7) secured to the inner faces of the side walls of the loop fastener bending unit T Spaced to the left of lever 28%, as viewed in FIGURES 2 and 7, are a pair of levers 386 which are adjustably keyed to the shaft 382. Pivotally attached to the lower ends of the levers 336 are U-shaped loop fastener bending members 388 which are normally retained in their initial position, in which they are shown in full lines in FIGURE 9, by tension springs 39% the upper ends of which are hooked about studs 392 carried by levers 386 while their lower ends are hooked about studs 3% (FIGURE 7) projecting from the loop bending members 338. Further movement of the loop bending member-s 338 by the springs 39% is limited by stops 3% and 398 respectively carried by the bendin members 388 and the levers 586.

During the upward movement of piston 352, the loop bending mechanism just described will move to the position shown in broken lines in FIGURE 9, during which movement the loop fastener bending m mbers 333 will move first upwardly and then inwardly around the corner of the box section to engage the outwardly projecting portions of the loop fasteners 0 bending them upward 1y about the binding wire Y and then inwardly and downwardly against the upper face of the box section.

During the latter portion of the movement of the bending members 388 their upper ends strike the body members 296 thereby pushing the shoes 29? from their inner position against the box section, and the tension 10 spring 312 returns them to their initial retracted position as shown in full lines in FIGURES 8 and 9.

Recycling Control Elements As may be seen in FIGURES 7 and 9, fastened to the block member 362 at a point to the right of the arm 36%, as Viewed in FIGURE 7, is a finger 37% having threaded therein a pair of studs 372 and 374. Upon the upward movement of piston 352 of cylinder 354, the block member 362 and the finger 370 are caused torotate in a counterclockwise rotation, thereby removing the stud .372 from contact with the plunger of an electric switch N mounted on the inner face of the righthand wall of loop fastener bending unit T As may be seen in FIGURE 12, the switch N is a normally open, single-pole singlethrow switch which is held closed by the stud 372 (FIG- URES 7 and 9). When the stud 372 is moved from contact with the switch, it will open to break the circuit to the solenoid valve K which is incorporated in cylinder 354 (FIGURES 7 and 9), thereby stopping the upward movement of piston 352.

As piston 352 reaches the end of its upward movement, the stud 374 on finger 370 momentarily contacts the plunger of an electric switch G which is attached to the inner face of the right-hand wall of the loop fastener bending unit T Similar elements of the loop fastener bending unit T function in similar fashion simultaneously to actuate an electric switch assembly E (FIGURE 12).

As may be seen in FIGURE 12, the switch G is a single-pole, double-throw switch which is normally in the position shown in full lines, and the switch assembly E comprises a pair of single-pole, single-throw switches, one of which is normally open and the other of which is normally closed. Actuation of the switches G and E, as described, energizes relay B, closing its contacts B and B and energizing the windings on the valve-control solenoids K and K These solenoids K and K like the solenoids K and K are respectively built into the air cylinders 354 (FIGURES 7 and 9) and 226 (FIGURE 10) and control the supply of air thereto. The energizetion of these solenoids K and K causes the pistons oi the cylinders to be driven in the directions opposite to those in which they are driven when the solenoids K and K are energized. Specifically, as shown in FIGURES 7 and 9, the piston 352 of cylinder 354 is retracted, returning the loop bending member 388 to its initial position as shown in full lines. And, as shown in FIGURE 10, the piston 232 of cylinder 226 is retracted, returning the fingers 248 and 254 to their initial position.

As shown in FIGURE 12, the actuation of the switches G and E as described also breaks the circuit to the winding of relay A, opening its contacts A and A de-energizing the solenoid valves 1 and I and the solenoid S. The de-energization of solenoids I and J actuates the air cylinders 172 (FIGURE 7) and 182 (FIGURE 3) to retract their respective wedge-shaped locators (FIG- URE 7) and 132 (FIGURE 3) to their initial position out of engagement with the box blank. The de-energization ofsolernoid S (FIGURE 1) allows the arm 114 to be moved in a counterclockwise direction by tension spring 113. This urges roller 115 against belt -96, applying tension to the belt and causing the auxiliary conveyor M to be driven to feed thebox blank with the attached box ends from the machine. As the trailing end of the box blank moves beyond the actuating element (FIGURE 4) of electric switch ,F, the switch is permitted to return to its initial position, thus energizing relay A (FIGURE 12) and closings its contacts A to complete a holding circuit to maintain its energization. Tln's readies the circuit for the next cycle of operation.

Unattached Box End Withdrawing Mechanism If for some reason the loop fasteners 0 are not properly inserted into and through the notches 1% of the cleats 189 and fasteners are not fully bent around the binding 1 1 wire Y, the box end is withdrawn from attaching position and discarded prior to feeding the box blank from the machine by the mechanism shown in FIGURES 6, 8, 9 and 10, as incorporated in the box end feeding unit This mechanism includes a pair of smaller diameter wheels 400 which are transversely ribbed around their peripheries and rotatably supported on horizontal studs 492 (FIGURE 6) projecting from the outer faces of the two forked members 246. The space between these Wheels and the fingers 254 is such that, as shown in FIGURE 9, as a box end 0 is moved into contact with the inner face of cleat 180, the wheels 490 ride upon and bite into the trailing edge of the box end. If the box end is not firmly attached to the box section, as the piston 232 retracts, the box end 0 is withdrawn by the gripping action of wheels 4%. As the box end is with-drawn, the overhanging portions thereof beyond the wheels tlt} at either side are brought into contact with rejector latches 4%, as indicated by broken lines X in FIGURE 9.

As may be seen in FIGURES 9, and 11, the rejector latches 4M are loosely mounted on bolts 4% carried by upwardly projecting flanges 408 fastened to the upper forward ends of the side plates 222. The latches :64 are free to swing forwardly, as indicated by broken lines V in FIGURE 8, but their reverse movement is restricted so that they cannot move beyond the position in which they are shown in full lines in FIGURE 8, by means of stop bars 410 projecting laterally from the front edges of the latches to engage the ends of the respective side plates 222, as shown in FIGURE 9. Thus, when the box end 0 engages the rejector latches 494, its further withdrawing movement is stopped, and as the piston 232 of air cylinder 226 is further retracted, the trailing edge of the box end is forcibly withdrawn from the grip of the wheels 40%) and allowed to drop out of the machine, as indicated by broken lines X in FIGURE 9.

Manual Reject Switch As shown in FIGURES 1, 7 and 12 there is provided a manually operable electric switch C, which, when closed, will render the several mechanisms of the machine inoperative and allow a box blank to be fed through the machine without interference. This switch C may also be used as a recycling control in the event that any one of the several mechanisms of the machine should not perform its specific function properly, due, for example, to one or both of the wedge locators 139 and 132; not being properly aligned with its respective opening between the cleat ends when the box blank comes to its stop position, or the box-ends 0 not being in proper attaching position, or the loop fasteners 0 failing to enter the notches 1% in the cleats 18%, or one or both loop fastener benders 388 failing to complete the loop bending operation.

We claim:

1. A machine for attaching box ends having binding wires with fastener portions projecting from the edges thereof to wirebound box blanks having a plurality of box sections formed of face material with notched reinforcing cleats secured thereto along the longitudinal edges of said box blank, said machine comprising box blank conveying means arranged to receive said box blanks from a box blank making machine and convey them through the endattaching machine, motor means for driving said box blank conveying means, conveyor control means for controlling the conveying of said box blanks by said box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach a predetermined position in said end attaching machine to stop said box blanks in said position, a pair of box-end feeders positioned and oriented to feed box ends toward the inner faces of the cleats at opposite edges of two spaced sections of a box blank in said position, power means for actuating said box-end feeders, fastener guides positioned to engage said fastener portions on said box ends as they are moved toward said box blank in said box-end feeders and guide them into the notches in said cleats, fastener bending elements movably mounted adjacent the edges of said box blank opposite said notches, and power means for driving said fastener bending elements to engage said fastener portions and bend them around the corners of said box blank to secure said box ends to said box blank.

2. A machine for attaching box ends having binding wires with fastener portions projecting from the edges thereof to wirebound box blanks having a plurality of box sections formed of face material with notched reinforcing cleats secured thereto along the longitudinal edges of said box blank, said machine comprising box blank conveying means arranged to receive said box blanks from -a box blank making machine and convey them through the endattaching machine, motor means for driving said box blank conveying means, conveyor control means for controlling the conveying of said box blanks by said box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach a predetermined position in said end-attaching machine to stop said box blanks in said position, a pair of box-end feeders positioned and oriented to feed box ends toward the inner faces of the cleats at opposite edges of two spaced sections of a box blank in said position, power means for actuating said box-end feeders, fastener guides positioned to engage said fastener portions on said box ends as they are moved toward said box blank in said box-end feeders and guide them into the notches in said cleats, fastener bending elements mov-ably mounted adjacent the edges of said box blank opposite said notches, power means for driving said fastener bending elements to engage said fastener portions and bend them around the corners of said box blank to secure said box ends to said box blank, and supplemental conveyor control means for controlling the conveying of said box blanks by said box blank conveying means and arranged to be actuated by said fastener bending elements upon completion of their fastener bending stroke to cause said conveying means to resume the movement of said box blank out of said machine.

3. A machine for attaching box ends having binding wires with fastener portions projecting from the edges thereof to wire bound box blanks having a plurality of box sections formed of face material with notched reinforcing cleats secured thereto along the longitudinal edges of said box blank, said machine comprising box blank conveying means arranged to receive said box blanks from a box blank making machine and convey them through the end-attaching machine, motor means for driving said box blank conveying means, conveyor control means for controlling the conveying of said box blanks by said box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach the predetermined position in said end-attaching machine to stop said box blanks approximately in said position, box-positioning wedges mounted for movement perpendicular to the plane of the box blanks into and out of engagement with portions at opposite sides of a box blank in said position, wedgedriving means for driving said wedges forcibly into engagement with said box blanks to position said box blanks accurately in said position, box blank backing elements positioned on the side of said box blanks opposite said wedges to limit transverse movement of said box blanks when they are engaged by said wedges, wedge control means for controlling said wedge-driving means, said wedge control means being arranged to be actuated by a part of said box blanks when said box blanks reach said position, a pair of box-end feeders positioned and oriented to feed box ends toward the inner faces of the cleats at opposite edges of two spaced sections of a box blank in said position, power means for actuating said boxend feeders, fastener guides positioned to engage said fastener portions on said box ends as they are moved toward said box blank in said box-end feeders and guide them into the notches in said cleats, fastener bending elements movably mounted adjacent the edges of said box blank opposite said notches, and power means for driving said fastener bending elements to engage said fastener portions and bend them around the corners of said box blank to secure said box ends to said box blank.

4. A machine for attaching box ends having binding wires with fastener portions projecting from the edges thereof to wirebound box blanks having a plurality of box sections formed of face material with notched reinforcing cleats secured thereto along the longitudinal edges of said box blank, said machine comprising box blank conveying means arranged to receive said box blanks from a box blank making machine and convey them through the end-attaching machine, motor means for driving said box blank conveying means, conveyor control means for controlling the conveying of said box blanks by said box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach a predetermined position in said end-attaching machine to stop said box blanks approximately in said position, box-positioning wedges mounted for movement perpendicular to the plane of the box blanks into and out of engagement with portions at opposite sides of a box blank in said position, wedge-driving means for driving said wedges forcibly into engagement with said box blanks to position said box blanks accurately in said position, box blank backing elements positioned on the side of said box blanks opposite said wedges to limit transverse movement of said box blanks when they are engaged by said wekdges, wedge control means for controlling said wedge-drivin-g means, said 'wedge control means being arranged to be actuated by a part of said box blanks when said box blanks reach said position, a pair or" box-end feeders positioned and oriented to feed box ends toward the inner faces of the cleats at opposite edges of two spaced sections of a box blank in said position, power means for actuating said box-end feeders, fastener guides positioned to engage said fastener portions on said box ends as they are moved toward said box blank in said box-end feeders and guide them into the notches in said cleats, fastener bending elements movably mounted adjacent the edges of said box blank opposite said notches, power means for driving said fastener bending elements to engage .Said fastener portions and bend them around the corners of said box blank to secure said box ends to said box blank, and supplemental conveyor control means for controlling the conveying of said box blanks by said box blank conveying means and arranged to be actuated by said fastener bending elements upon completion of their fastener bending stroke to cause said conveying means to resume the movement of said box blank out of said machine.

5. A machine for receiving from a loop fastener machine wirebound box blanks having a plurality of box sections formed of face material with reinforcing cleats secured thereto along the longitudinal edges of said box blanks and securing thereto box ends having binding wires with loop fasteners projecting from the edges thereof, said machine comprising first box blank conveying means arranged adjacent to and in alignment with the output end of said loop fastener machine to receive said box blanks therefrom and convey them into the endattaching machine at substantialy the same speed as they are delivered from said loop fastener machine, drive means connecting said first box blank conveying means to the drive system of said loop fastener machine for driving thereby, said drive means including an overrunning clutch, second box blank conveying means arranged to receive box blanks from said first box blank conveying means and convey them the remainder of the Way through and out of said machine, motor means for driving said second box blank conveying means to move said box blanks at a greater speed than they are moved bys said first conveying means, through the action of said over-running clutch, conveyor control means for controlling the conveying of said box blanks by said second box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach a predetermined position in said end-attaching machine to stop said box blanks in said position, a pair of box-end feeders positioned and oriented to feed box ends toward the inner faces of the cleats at opposite edges of two spaced sections of a box blank in said position, power means for actuating said box-end feeders, fastener guides for guiding said loop fasteners through the notches in said cleats, fastener bending elements movably mounted adjacent the edges of said box blank opposite'if said notches, power means for driving said fastener bending elements to engage said loop fasteners and bend them around the corners of said box blank to secure said box ends to said box blank, and supplemental conveyor control means for controlling the conveying of said box blanks by said second box blank conveying means and arranged to be actuated by said fastener bending elements upon completion of their fastener bending stroke to cause said conveying means to resume the movement of said box blank out of said machine.

6. A machine for attaching box ends having binding wires with fastener portions projecting from the edges thereof to wirebound box blanks having a plurality of box sections formed of face material with notched reinforcing cleats secured thereto along the longitudinal edges of said box blank, said machine comprising box blank conveying means arranged to receive said box blanks from a box blank making machine and convey them through the end-attaching machine, motor means for driving said box blank conveying means, conveyor control means for controlling the conveying of said box blanks by said box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach a predetermined position in said end-attaching machine to stop said box blanks in said position, a pair of box-end feeders positioned and oriented to feed box ends toward the inner faces of the cleats at opposite edges of two spaced sections of a box blank in said position, power means for actuating said box-end feeders, fastener guides positioned to engage said fastener portions on said box ends as they are moved toward said box blank in said box-end feeders and guide them into the notches in said cleats, fastener bending elements movably mounted adjacent the edges of said box blank opposite said notches, power means for driving said fastener bending elements to engage said fastener portions and bend them around the corners of said box blank to secure said box ends to said box blank, box-end withdrawing elements positioned for frictional engagement with the attached box ends, and mounted. for movement toward and away from the box blank, and power means for moving said withdrawing elements in a direction away from said box blanks to exert a frictional withdrawing force on said box ends and withdraw them from the box blank if the fastener portions have not been properly inserted and bent to attach said box ends securely to said box blank.

7. A machine for attaching box ends having binding wires with fastener portions projecting from the edges thereof to wirebound box blanks having a plurality of box sections formed of face material with notched reinforcing cleats secured thereto along the longitudinal edges of said box blank, said machine comprising box blank conveying means arranged to receive said box blanks from a box blank making machine and convey them through the end-attaching machine, motor means for driving said box blank conveying means, conveyor aoaaova control means for controlling the conveying of said box blanks by said box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach a predetermined position in said end-attaching machine to stop said box blanks approximately in said position, boxpositioning wedges mounted for movement perpendicular to the plane of the box blanks into and out of engagement with portions at opposite sides of a box blank in said position, wedge-driving means for driving said wedges forcibly into engagement with said box blanks to position said box blanks accurately in said position, box blank backing elements positioned on the side of said box blanks opposite said wedges to limit transverse movement of said box blanks when they are engaged by said wedges, a pair of box-end feeders each comprising a feeder slide assembly frictionally engaging said box ends and mounted for movement toward and away from said box blanks, power means for actuating said feeder slide assemblies, feeder control means for controlling the movement of said feeder slide assemblies by the last mentioned power means, said feeder control means being arranged to be actuated by said wedge-driving means upon movement of said wedges into box-engaging position to initiate movement of said box ends toward said box blank, fastener guides positioned to engage said fastener portions on said box ends as they are moved toward said box blank in said box-end feeders and guide them into the notches in said cleats, fastener bending elements movably mounted adjacent the edges of said box blank opposite said notches, power means for driving said fastener bending elements to engage said fastener portions and bend them around the corners of said box blank to secure said box ends to said box blank, bender control means for controlling the movement of said fastener bending elements by the last mentioned power means, said bender control means being arranged to be actuated by said feeder slide assembly upon its movement of said box end into attaching position on said box blank, and supplemental conveyor control means for controlling the conveying of said box blanks by said box blank conveying means and arranged to be actuated by said fastener bending elements upon completion of their fastener bending stroke to cause said conveying means to resume the movement of said box blank out of said machine.

8. A machine for attaching box ends having binding wires with fastener portions projecting from the edges thereof to wirebound box blanks having a plurality of box sections formed of face material with notched reinforcing cleats secured thereto along the longitudinal edges of said box blank, said machine comprising box blank conveying means arranged to receive said box blanks from a box blank making machine and convey them through the end-attaching machine, motor means for driving said box blank conveying means, conveyor control means for controlling the conveying of said box blanks by said box blank conveying means, said conveyor control means being arranged to be actuated by a part of said box blanks when said box blanks approach a predetermined position in said end-attaching machine to stop said box blanks approximately in said position, boxpositioning wedges mounted for movement perpendicular to the plane of the box blanks into and out of engagement with portions at opposite sides of a box blank in said position, Wedge-driving means for driving said wedges forcibly into engagement with said box blanks to position said box blanks accurately in said position, box blank backing elements positioned on the side of said box blanks opposite said wedges to limit transverse movement of said box blanks when they are engaged by said wedges, a pair of box-end feeders each comprising a feeder slide assembly frictionally engaging said box ends and mounted for movement toward and away from said box blanks, power means for actuating said feeder slide assemblies, feeder control means for controlling the movement of said feeder slide assemblies by the last mentioned power means, said feeder control means being arranged to be actuated by said wedge-driving means upon movement of said Wedges into box-engaging position to initiate movement of said box ends toward said box blank, fastener guides positioned to engage said fastener portions on said box ends as they are moved toward said box blank in said box-end feeders and guide them into the notches in said cleats, fastener bending elements movably mounted adjacent the edges of said box blank opposite said notches, power means for driving said fastener bending elements to engage said fastener portions and bend them around the corners of said box blank to secure said box ends to said box blank, bender control means for controlling the movement of said fastener bending elements by the last mentioned power means, said bender control means being arranged to be actuated by said feeder slide assembly upon its movement of said box end into attaching position on said box blank, boxend withdrawing elements mounted on said feeder slide assemblies for frictional engagement with the outer edges of the attached box ends to withdraw said box ends from said box blank upon movement of said feeder slide assemblies away from said box blank if said fastener portions have not been properly inserted and bent to attach said box ends securely to said box blank, supplemental feeder control means for controlling the movement of said feeder slide assemblies, said supplemental feeder control means being arranged to be actuated by said fastener bending elements upon completion of their fastener bending stroke to initiate movement of said feeder slide assemblies away from said box blank, and supplemental conveyor control means for controlling the conveying of said box blanks by said box blank conveying means and arranged to be actuated by said fastener bending elements upon completion of their fastener bending stroke to cause said conveying means to resume the movement of said box blank out of said machine.

References Cited in the file of this patent UNITED STATES PATENTS

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