US2128963A

US2128963A - Box lidder feed

Info

Publication number: US2128963A
Application number: US191585A
Authority: US
Inventors: Paxton Hale
Original assignee: FMC Corp
Current assignee: FMC Corp
Priority date: 1935-04-24
Filing date: 1938-02-21
Publication date: 1938-09-06
Anticipated expiration: 1955-09-06

Description

' Sept. 6,1938. H. PAxToN "2,123,953

Box LIDDER FEED original Filed April '24, 1955 s Sheets-sheet 1 Amd. f J ML ZIESEL Qa O w www no M f rw ...g

sept. 6, 193s.

H. vPAx'roN BOX LIDDER FEED 3 Sheets-Sheet 2 Original Filed April 24, 1955 1938., H. PAx'roN BOX LIDDER FEED Sept. 6,

' Original Filed April 24. 1935 3 Sheets-Sheet, 5

4mm/ff Patented Sept. 6, 1938 i UNITED STATES PATENT oEElcE Machinery Corporation,

. poration of Delaware San Jose, Calif., a cororiginal application April 24, 1935, sei-laiL No.

I 17,970. Divided and this application February 2'1, 1938, Serial No. 191,565

7 Claiml; (Cl. 1 1@ This invention relates to devices for feeding boxes to and from a lidder and has particular utility in the operation of a lidder in lidding boxes overlled with fresh fruits or vegetables.

This case is a division carved from the joint application Ser. No. 17,970, filed April by 'Chester E. ODonnell and myself on a Method of and apparatus for packing fresh whole fruits and the like".

'I'he present invention embraces that portion of the subject matter presented in the parent case above referred to which relates to the feeding of a packed box into a lidder and the coordinate ejecting of the lidded boxfrom said lidder.

It is an object of my invention to provide an improved mechanismv for automatically feeding vpacked boxes to a lidder and removing the lidded boxes therefrom.

The manner of accom lishing this object as 4well as further objects and advantages will be made manifest in the following description taken in connection with the accompanying drawings:

Figure 1 is afront elevational view ci the preferred embodiment of the invention.

Fig. 2 is a horizontalsectional view taken on the line 2-2 of Fig. l.

Fig. 3 is an enlarged fragmentary perspective view illustrating the details of the control mechanism in the pre-presser.V I

3 Fig. 4 is a fragmentary sectional view taken on the line 4-4 of Fig. 2.

Fig. 4a is a fragmentary diagrammatic View taken on the direction of the arrow 4a of Fig. 3,

and illustrating the overthrow mechanism -of the pre-presser in neutral position.

Fig. 4b is a view similar to Fig. 4a.A and illustrates the overthrow mechanism in position for elevating the press table.

Fig. 4c is a view similar to Fig. 4b and illus- 4o trates the overthrow mechanism in position vfor lowering the press table.

Fig. l5 is a fragmentary operation view of the pre-presser and control mechanism for feeding the box into the lidder and shows the pre-presser 5 table moving downwardly with the ejector dog shifting the box against the discharge stop to position the latter over the operating cam therefor.

Fig. 6 is a fragmentary operation view illus- 50 trating the situation at the instant of completing the downward movement of the pre-presser table in progress in Fig. 5. o

Fig. '7 is a transverse sectional view taken on the line 1--1 of Fig. 6.

55 Fig. 7a is an enlarged transverse sectional view conveyor and feed similar to Fig. '1 and showing the box stop in elevate'dposition.

Fig. 8 is a view similar to Fig. 5 and illustrating the ejection of a box from the pre-presser into the lidder the discharge stop in the pre-presser to its vertical position, and the automatic lowering of the stop operating cam into its inoperative position.

Fig. 9 is a view similar to Fig. 5 illustrating thesituation where the table of the pre-presser has arrived downwardly with a loaded box during. the performance of a lidding operation in the lidder, this view showing the lidder table returning to its downwardmost position, upon arrival at which this table will shift the pre-presser disfrom 'the box on the pre-presser table.

Fig. 10 is an enlarged fragmentary sectional detail View taken on line |0||i of Fig. 6 andv showing the stop cam operating latch and lug.4

Referring specifically to the drawings the apparatus of my invention illustrated therein may be indicated by the numeral 2|), this apparatus including a lid pressing. nailing and strapping machine 2|, a pre-pressing machine 22, and a box mechanism 23 for supplying overlled packed boxes with the machine- 2| and 22.

The lid pressing, nailing and strapping machine 2| is preferably similar in structure andoperation to the machine of this type disclosed in application Ser. No. 688,104, iiled September 5, 1933; by myself and joint inventors Gerald C. Paxton and Harry D. Benson, or it may be like the machine disclosed in application for U. S. Letters Patent Ser. No. 709,176, led January 31, 1934, by the same three applicants, said applications having been co-pending with the parent case of the present divisional application, and having since issued as U. S. No. 2,093,733, respectively.

Neither side fiushers nor a crown sheet are employed in the machine 2|. With this exception and the exceptions to be noted hereinafter, the' machine 2| may be identical with the machine described in either of the co-pending applications.

The machine 2| has a frame 32 and a nailing table 33 vertically reciprocable within the frame 32 by a power unit 34 controlled by YaY pedal 35. Mounted on the upper end of the frame 32 are nailing heads 36 and a strapper head 31.

The nailing table 33 a plan view of which is shown in Fig. 2, includes end cross'bars 40 having upright guide bars 4| at their opposite ends with the consequent restoration of charge stop operating cam against a roller on such stop to disengage this stop Letters Patent No. 2,084,048 and 4 f which are mounted idle rollers 46.

c 53. 'I'he rod front ofthe box.

for sliding within vertical angle iron members 43 of the frame 32. 'I'he end bars 40 are connected by longitudinal bars 44 and 45 upon Pivotally mounted on the cross bars 40 and having operating mechanism exactly as shown in the rst mentioned co-pending application are side flusher shafts 48, the shaft carrying no flushers,y however. but instead lateral box centralizers 49 and longitudinal box centrali-zers 50 which brought into operative relation with a box on the table 33 when the table is elevated by inward swinging of shafts 48, mentioned co-pending application. v

Mounted between the bars is a box ejector and stop mechanism 52. Themechanism 52 includes a discharge stop 51 and a. rebound box stop 58. Connecting the stop 51k with al downward extending arm 53 on one of the shafts 4B ls a link 54 which swings `the stop 51 down away from in front of a box on the table 33 each time the shafts 48 are swung inwardly by the lifting of the table.` 'I'he link 54 is telescopic in construction and includes a rod 54a which has a head 54h at one end and a clevis 54e at the opposite end which pivotally connects to the arm 54a is slidable in lugs 54d provided on a member 54e which is pivotally connected vto an arm 51a extending laterally from the hub of the stop 51. Coiled about the rod 54a between the clevis 54cand the lowest of the lugs 54d is an expansive spring 541 which tends to maintain the link 54 in its extended condition of greatest length as shown in Fig. 4 but which permits the telescoping of, this link to reduce its length. j

'Ihe stops 51 and 58 (Figs. l, 2, 9 and 10) are mounted on a shaft 52a, the opposite ends of which are supported on the table bars 4|). The stop 51 is rotatable on this shaft and is yieldably urged against a. collar 52h, fixed on the shaft, by a short expansion spring 52e coiled about the shaft. When a box is delivered onto the table 33, it depresses the stop 58 which is pivotally mounted on a block 58aflxed on the shaft 52a,Y the stop 58 (Fig. 10) being yieldably pressed upwardly into its stop position as shown in Fig. 1. When this box hits the stop 51, it compresses the spring 52e, the box at this time clearing the stop 58 and permitting the latter to be lifted by its hidden spring into its stop position as shown in Fig. 1. When the inertia of the box has been stopped by lthe compression of the spring 52e, this spring shifts the box backwardly against the stop 58, there still being a gap between stop 51 and the collar 52h when this takes place. Upon the operation of the lidding machine 2|, as described in the first aforementioned co-pending application, the inward swinging of the shafts 4E by engagement of rolls 48a with cam tracks 4Bb shown in Fig. 4,

causes the stop 51 to'be rotated by the link 54 until the stop is disposed downwardly from in The pressure of the spring 52o against the stop 51 immediately forces this along the shaft 52a against' the collar 52b so that the stop 51 is now disposed under the box. With the downward movement of the table 33, the shafts 48 are returned to their positions as shown in Fig. 4 by springs 53a connecting the lower ends of arms 53 on the shafts 48. Normally the box is still disposed over the stop 51 when the table 3ft reaches its downwardmost position as shown in Fig. 4, so that the stop 51 cannot be returned to its upward position by as fully described in the rst above aiaees the link 54. 'Ihis being the case, the link 54 telescopes as above described causing the compression of the spring 54f and when the box has entirely passed over the stop 61, this spring extends the link 54 to its full length and returns 4the stop 51 to its upwardmost position as shown in Fig. 4.

'I'he ejector and stop mechanism 62 also includes an ejector spring 52d, coiled about the shaft 52a and anchored at its forward end adjacent the collar 52D'. The opposite end of the spring 52d connects to a block 52e slidable on the shaft 52a and carrying an ejector dog 52j which is` constantly spring pressed into its upwardmost position as shown in Fig. 1. Pivotally mounted on the block 58a is a chain pulley 58h over which a chain 58e, connected to the block 52e, extends, this chain passing downwardly as shown in Fig. 5 and connects to a spring means 58d mounted on the frame 32 of the lidder 2|. The` spring means 58d takes up the slack in the chain 52e when the table 33 is ln its downwardmost position and as the table rises with the box disposed between the stops 51 and 58, the chain 58e compresses the spring 58d to its limit and then pulls the block 52e with the ejector dog 52j thereon in a leftward direction until this dog is free to be spring pressedA upwardly opposite the rearend of the box as shown in Fig. 9. Thus, when the box is freed from thelongitudinal centralizers and from the `stop 51 by the outward swinging of the shafts 48, the power of the spring 52d is released against the box through the ejector dog 52j in ejecting the box from the lidder 2|, this returning the dog 52j and spring 52d to the condition in which these are shown in Fig. 2.

Pivotally mounted on the inner face of a downward extension from the front one of the longitudinal bars 45 as shown in Figs. 1 and 2, is a spring pressed latch having a lug 56 (Fig. 10) extending inward therefrom, this latch being po sitioned to be engaged by a box entering the machine 2|, rocked about its axis and then disengaged by said box before the latter comes to rest upon the table r33 in its proper position. Leading from the `discharge end of the machine 2| is a section of roller conveyor 59.

The pre-presser 22 hasa frame 62, a vertically reclprocable table 63 and a table elevating power unit 64, all of which are identical with the corresponding parts oi' the lid nailing and strapping machine 2| with the exceptions to be noted hereinafter.

Mounted upon upper ends of four angle iron corner posts 65 of the frame 62 is a presser plate assemblyv66 including longitudinal bars 61 and 68 upon which are yieldably mounted a compresser plate 14, which is formed in two halves each of which is supplied with 'a soft rubber pad 19.

As above stated, the table 63 is supported on and vertically reciprocable by the power unit 64 in the same manner as described in the first above mentioned co-pending application. As shown in Fig. 2, the table 63 is substantially similar to the table 33 of the machine 2|, and both of the tables in their downwardmost positions l stantially like theassembly 52 excepting as to the means of operating 'the discharge stop Ill. The ejector and stop assembly |00 (Fig. 3) includes a shaft |05 which is supported as by having its opposite ends welded upon-the end bars of the table. This shaft supports a block |06 iixed thereto, said block carrying a chain pulley |01, underneath the bar |05, and a box rebound stop |06 pivotally.lmounted on said'block and yieldably spring pressed upwardly into the position in which it is shown in Fig. 3. Fixed upon the shaft |05 adjacent the` opposite endl of the table 63 is afspring anchor collar ||0 to which is anchored a heavy contractile spring which is coiled about the shaft |05. The opposite end of this spring is connected to a slide block i2 on which ispivotaily mounted an ejector dog ||3, this being yieldably urged upwardly into the position in which it is shown in Fig. 3 by a small concealed spring on said slide block.

The frame 62 (Fig. 3) includes a longitudinally disposed channel ,iron member |15 and a flexible chain ||6 extends from the slide block ||2, over the pulley |01, and downwardly through a suitable aperture in the member ||5 where -it is yieldably held by a spring means i i1 (Fig. 1).

2. 5. 6, 8 and 9. Light coil springs |52 on the arms |50 maintain the cam |51 against cap screws |50a screwed into the ends of arms |50. Thev rocker |49 also has an arm |53 which extends upwardly within the structure of the table 33 when this is in its lowermost position and is engaged by a horizontal surface on the latch`55 whenever the latter moves downwardly with the table 33 into its iowermost position as shown in Fig. 1. Whenever the arm |53 is disengaged by the latch 55, the rocker' |59 rocks by gravity owing to the weight of cam. |5| so as to lower the latter into its lowermost position in which it is shown in dotted lines in Fig. 7a.

The table 63 has ii'usher shafts |60 which are actuated in identically the .same manner as illustrated in the first of the aforementioned copending applications, that is by rollers |6| and cam tracks |62 (see Fig. 4). These shafts have upwardly extending arms '|63 carrying lateral box centralizing members |64, longitudinal box centralizing members blades |66.

4ci' course, move upwardly with the table lai.

. control rod |96 (Fig. l.)

The table 63 also carries an apertured upward Pivotaliy mounted limit control finger |15 (Figs. 1 and 3) and a downward limit control cam |16. Carried onvthe inner face of one of the longitudinal bars 03 of the table 63 is a low voltage box delivery control switch |11 (Figs. 1 and 3) having a `switch finger |16.

Extending forwardly from the channel frame member (Fig. 3) is a frame bracket |30, and

a switch control shaft |3| is pivotaliy mounted` The arm |66 connects to the lower end of a which extends upward through the aperture in the nger |15 and has its -upper extremity guided vertically by a guide |01 provided on the overhead frame-plate 61 as shown in Fig. l. The rod |96 has an \upward |90 provided thereon as shown in Fig. l, the position of this collar on the rod |36 being adjustable, and being adapted to be engaged by the upward limit finger |15 on the table 63 as this table approaches its upwardmost position to reverse the switch |33 and the operation of the elevator mechanism 64, this causing the. table to be lowered.

The arm |61 as shown in Figs. l and 3 is adapted to be engaged by the downward limit control cam |16 on rthe table 63 as the latter approaches its downwardmost position so as to rock the shaft |8| and operate the switch |93 to halt the downward movement of the table 63. The arm |83 is connected through a link 200 with a full bell crank 20| which is in turn connected by a link 202 to a leverl 203 pivotally mounted on a bracket 204 which is supported on the channel member H6. The upper end of the lever 203 has a dog 205 pivotally mounted thereon as shown in Fig. 3, this dog being yieldably held by a spring 206 in the position shown. The arm |69 has a pin 2id at its lower end which is connected by a contractile spring 2li to avpin y this system being represented by the conveyor 220 and being driven by a motor 22| connected to 2 i2 provided on. the bracket |60. Also provided on this bracket..

this conveyor. This motor is controlled by switches 222 and 223 having arms 224 and 225 which are positioned as shown inFigs. 1 and 2 so as'to be engagedby boxes travelling upon the conveyor 220 and upon a short section of idle conveyor 221 located between the conveyor 220 and the machine 22. The motor 22| is driven by power transmitted through switches 222 and 223 with the latter connected in parallel so that this motor runs continuously excepting when both arms 224 and 225 are engaged by boxes as aforesaid to deenergize the motor 22|.

Mounted so as to extend slightly above the uppermost surface of the idle roll conveyor section 221 just at the entrance to the machine 22 is a feed roller 230 which is power driven by a motor 23|, current being `supplied to said motor through the switch |11, the motor being deenergized whenever the arm |18 is depressed by a box resting on the table 63. Owing tothe necessity for the table 83 to reciprocate vertically in the operation of the machine 22, switch |11 is, of course, connected to the motor 23| through a flexible cord.

Operation As boxes B travel along the conveyor 220 onto the idle roll conveyor section 221 so as to extend onto the feed roller 230, this feed roller picks up the foremost box and delivers it at an accelerated speed onto the table 63 of the machine 22. The

rapidity of this delivery causes the box, upon engaging the discharge stop |0| to compress the spring |21 measurably as shown in dotted lines in Fig. 9, and as the inertia of the box is overcome, the latter is repelled back against the stop |08 which in the meantime has been lifted` by its spring into position at the rear of the box. With this rearward movement, the box also engages the dog 205 and shifts this rearwardly thereby rocking the lever 203 t'o swing the lower end of this forwardly and, through the linkage 200, 20| and 202 and the arm |88, rocking the shaft |8| to swing the overthrow arm |89 from the position in which it is shown in Figs. 3 and 4a to the position in which the latter arm is shown in Fig. 4b. It will be noted that in this movement of the arm |89 the axis of spring 2|| is shifted across the axis of the shaft |8| to bring the arm |89 against stop 2|3 so that the spring 2|| now retains the shaft |8| in the position into which it was just shifted. This rotation of the shaft |8| lifts upon the link |90 and the eye |9| (see Fig. 1) A so as to lift on the collar |94 carried by the link |90 thereby drawing upwardly the stem |92 of the switch |93. This actuates the switch to set in motion the elevator mechanism 64 thereby starting to move the elevator table 63 upwardly.

' Owing to the fact that the spring 2| holds the arm |89 in the position in which it is shown in Fig. 4b this upward movement of the table 63 will now continue until some positive force has been applied to throw out the switch |93.

As box B moves onto the table 63 and over the switch |11, it engages the switch arm |18 and shuts off the motor 23|, thus stopping rotation of the feed roller 230. Any box delivered onto the conveyor section 221 therefor while the box B isstill resting on the table 63 will merely come to rest with its forward end resting on the roller 230 as box B is shown in Fig. 1. When resting in this manner, the foremost box has moved entirely off the conveyor 220 so as not to interfere with continued operation of the latter. When in this position, the foremost box engages the arm 225 and swings it so as toshut off the switch 223. If, while this box remains in this position, another box arrives at the discharge end of the conveyor 220 so as to engage and swing the arm 224 and shut olf the switch 222, this deenergizes the motor 22| and causes the conveyor system terminating with the conveyor 220 to be halted.`

This halting of the conveyor 220 continues until the foremost box is subsequently delivered into the machine 22, as will be described hereinafter.

As the table 63 is elevated with the box' B resting thereupon, the fruit F which extends above the upper end of the box is brought into engagement with the pad 90 of the pressing plate 14 so as to compress this fruit into the box and leave the upperi face of this fruit disposed with an arcuate contour corresponding to that of the presser plate 14. The amount of pressure thus applied is determined by the position of the collar |98 on the control rod |96 so as to select the height at which the table has been lifted before the switch |93 is reversed thus causing the elevator mechanism 64 to cease elevating the table 63 and commence drawing the latter back downwardly.

A center guard 80 disposed over a partition P of the box B comes to rest on this partition and is lifted upwardly thereby during the elevation of' the box.

As the table 63 rises, spring means I 1 as shown in Fig. l is rst compressed and then draws downwardly on the chain ||6 to draw thel slide block ||2 leftward and stretch spring This carries the ejector dog 3 to the left until it comes up underneath the reversal stop |08 opposite the rear end of the box B. As the elevator table starts downwardly, the dog 3 is shifted by the springs against the rear end face of the box B and further contraction of the spring for the time being is now prevented by the trapping vof the box between the'centralizers |65 and the presence of stop |0| along the path in which the box mustV be ejected in feeding this into the lidder 2|. When the table 63 has moved downwardly to the point illustrated in Fig. 5, the centralizers |64|65 and ilushers |61-|68have been withdrawn from their embrace of the box.

With this release of the box B from all restraint but that of the stopv |0|, the powerful pressure exerted against the box by the spring compresses the weaker spring |21 between the discharge stop |0| and the adjacent end bar 95 of the table 63, this movement of the box tion therefrom by the ejector |00, so as to impel this box over the idle conveyor |45 and into the machine 2| as shown in Fig. 8.

As the box enters the machine 2|, it engages latch 55 and swings it forwardly thus shifting the lug 56 on the latch 55 (Fig. l0) away from over aisance said stop is not only rendered free from cam |5| by the lowering ofthe latter as aforesaid, but is also now out of alignment with this cam by the response above noted of the stop to the spring |21.y The stop illl is thus doubly free to respond to its normalizing spring |33 which returns the stop to its upright position as shown in Fig. 8.

From the foregoing, it is clear that the delivery of a box onto the table -33 in the lidder 2| dlsengages the latch 55 from the cam rocker arm |53 so as to permit the cam |5| 'to drop into its inoperative fposition .relative to the stop lill. It

, is likewise clear that the cam .|i must be raised -33 takes place in lidding a into operative position before a box may againbe discharged from the pre-presser 22. The only way in which the cam |5| can be thus raised is by the elevation of the tal'ile 33 of the lidding machine 2| a sumcient distance so that on its return downward the lug 56 on the latch 55 will engage and rock the cam rocker |49 to lift the cam |5i. A reciprocation of the table 33 having this eilect may be accomplished 35, of course, without lidding a box resting on this table. However, in the normal operation of the apparatus'Z, no such partial reciprocation of the table 33 would take place. Instead, each time a box is delivered to the machine 2| and is centralizel longitudinally by the stops 5l and 58, the operator, after placing a lid L in the machine and inserting a strap in the strapper head 3l, steps on the pedal 35 causing the elevating mechanism 3l to lift the table 33 against the nailing heads 36 and the strapper head the box with the ends of the lid engaging the ends of the box, nail the lid ends to the box ends, place the strap over the middle of the cover, and secure the ends of the strap to the sides of the box. When this is accomplished, the operator releases his foot from the pedal 35 which automaticallyresults in the reversal of the motor in the elevating mechanism 3l thereby withdrawing the table 33 downward to its lowermost position as shown in Fig. 1. The stop 51 is rotated 4out of stop position with the downward movement of the table 33 by suitable linkage connecting this stop to the usher shafts 43, and the longitudinal box centralizers 5B are also withdrawn by therotation of such shafts to nonimpeding positions as shown in this figure, whereupon the ejector dog of the vmechanism 52 ejects the lidded and strapped box from the table 33 onto thegravlty conveyor section 59. v

Whenever a complete reciprocation of the table box, a return of the table to its` downwardmost position vas shown in Fig. 1 always results in the lug 56 on the'latch 55 engaging the cam rocker |49, this lifting the cam |5| into operative position. When this occurs, oi course, a lidded box is just being ejected from the table 33, leaving the latter ready to receive another box to be lidded. It, when the table 33 thus moves downwardly, the table 63 of the, prepresser 22 is in its downwardmost position with a box resting thereon andwaiting to be ejected therefrom, the upward movement of the cam. lil

by manipulating the pedal 31 so as to apply a lid to 5 I) resulting` from the return of the table 33 to its lowermost position will cause the cam |5| to' engage the roller |3| and rotate the stop ||l| out from in front 0I the box B on the table 63 in exactly the same manner as, and with the same ref" 5 suits as above described, wherethe cam|5| was latched lin raised position and was then engaged by the roller |3| as the table 63 returned to its lowermost position. That is, in either case, the out from in front of 1o allowing the box to be cam |5|`rotateslthe stop ibi the box on the table 63 ejected by the ejector |00, discharging the box rapidly from the machine 22 into the machine 2|.

Y What I claim is:

1. In combination: a lidder including a nailing table, lid pressing and nailing mechanism suspended overhead, and an elevator for lifting said table with a packed box resting thereon into operative relation with said mechanism to lid said box, and then lowering said table to permit the iidded box to be discharged therefrom; feeding means for delivering a box onto said table; stop l means for preventing a box from passing from said feeding means into said lidder; and control means responsive to the downward travel of said table to render said stop means inoperative' to stop said last mentioned box from being fed into said lidder.

2. In combination: a lidder including a nailing table, lid pressing and nailing/mechanism sus- 3o pended overhead, and an elevatorfor lifting said table with a packed box resting thereon into operative relation with said mechanism to lid said y box, and then lowering said table to permit the lidded box to be discharged therefrom; feeding 3g means for delivering a box onto said table; stop means for preventing a box from passing from said. feeding means into said' lidder; control means responsive to the downward travel 'of said table to render stop said last mentioned box from being fed into said lidder;v and m aris automatically restoring said stop means to ox stopping condition with the passage oi a boxthereover.

l 3. In combination: table, lid pressing and nailing mechanism suspended overhead, andan elevator for lifting said table with a packed box resting thereon into operative relation with said mechanism to iid said box, and then the lidded box to be discharged therefrom; feeding means for delivering a box onto said table; stop means for preventing a box from passing from said feeding means into said lidder; control means responsive to the downward travel' of said 55 table to render said stop means inoperative to stop said last mentioned box from being fed into said lidder; and means freeing said stop means from said control means to permit said stop means to stop another box subsequentlyarrlv- 60 ing adjacent thereto. v

4. In combination: a lidder including a nailing table, lid pressing and nailing mechanism suspended overhead and an elevator for lifting said table with a packed box resting thereon into o5 ,operative relation said stop means inoperative to. 40

a lidder including a nailing lowering said table to permit 5o preventing a box from 1.0

5. In combination: a lidder including a nailing table, lid pressing and nailing mechanism suspended overhead and an elevator for lifting said table with a"` packed box resting thereon into operative relation with said mechanism to lid said box, and then lowering said table to permit the lidded box to be discharged therefrom; feeding means for rapidly propelling a box onto said table; stop means for preventing a box from passing from said feeding means into said lidder; control means responsive yto the downward travel of said tableeto render said stop means inoperative to stop said 'last mentioned box from being fed linto said lidder; and means automatically restoring said stop means Vto box stopping condition with the passage of a box thereover.

6. In combination: a lidder including a nailing table, lid pressing and nailing mechanism suspended overhead, and an elevator for lifting said table with a packed box resting thereon into operative relation with said mechanism to lid said box, and then lowering said table to permit the lidded box to b'e dischargedtherefrom; feeding means for delivering a box onto said table; stop means for preventing a box from passing from said feeding means into said lidder; con

trol means responsive to the downward travel of said table to render said stop 'means inoperative to stop said last mentioned box from being fed into said lidder; Vand means independent of the`box entering said lidder to be lidded, for automatically removing the previously lidded box from said lidder.

7. In combination: a lidder including a nailing table, lid pressing and nailing mechanism suspended overhead, and an elevator for lifting saidV table with a packed box resting thereon into operative relation with said mechanism to lid said box, and then lowering said table to permit the lidded box to be discharged therefrom; feeding means for delivering a box onto said table; stop means for preventing a box from passing from said feeding means into said lidder; control means responsive .to the downward travel of said table to render said stop means inoperative to stop said last mentioned box from being fed into said lidder; and means independent of the box entering said lidder to be lidded, for automatically and rapidly ejecting the previously lidded box from said lidder.

HALE PAXTON.