US1471924A

US1471924A - A partnership composed of m

Info

Publication number: US1471924A
Authority: US
Publication date: 1923-10-23
Anticipated expiration: 1940-10-23

Description

Oct. 23, 1923. 1,471,924

H; A. SAYLOR ET Al.

BOX 'SEALING MACHINE Filed May 16. 1921 6 Sheets-Sheet 1 Oct. 23, 1923. 1,471,924

H. A. SAYLOR ET AL BQX SEALING MACHINE Filed May 16 1921 6 Sheets-Sheet 2 Oct. 23 1923.

Filed May 16 1921 6 Sheets-Sheet 5 /N VEN To/es Pau/,4. Mbs/Waar Oct. 23, 1923.

H. A. sAYLoR ET Al.

BOX SEALING MACHINE Filed May 1s. 1921 6 Sheets-Sheet 5 IN VE N TO R5 #eff/JIA Shy/0r E y U/Wf" Pac/r l Paa/ DMG/270er VUM/fr Oct. 23, 1923. 1,471,924

H. A. sAYLoR ET AL BOX SEALING MACHINE Filed May 16; 1921 6 Sheets-Sheet 6 uw mun m\\ Patented Oct. 23, 1923.

UNITED STATES PATENT OFFICE.

HENRY A. SAYLOR, ARTHUR S. PECK, AND PAUL A. DINSMOOR, OF LAWRENCE,

KANSAS, ASSIGNORS TO LAXVRENCE PAPER MANUFACTURING COMPANY, 0F LAW- RENCE, KANSAS, A lPARTNER-SHIP COMPOSEI) OF M. G. BOWEBSOCK, IRVING HILL, PAUL A. DINSMOOR, HORTENSE B. HILL, MARY B. DINSMOOR, JEAN B. BLACK- WELDER, AND MARGERY B. DALTON.

BOX-SEALING MACHINE.

Application filed May 1G, 1921.

To all whom t may concern.'

lie it known that we, HENRY A.. SAYLOR, MTI-Ina S. PEOR, and PAUL A. DiNsMoon, citizens of the United States, residing at Lawrence, in the county of Douglas and State of Kansas, have invented certain new and useful Improvements in Box-Sealing Ma'hines; and we d0 declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled the art to which it appertains to make and use the same, reference being had `to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to a machine for sealing boxes, particularly of the type commonly known as shipping cartons consist ing of foldable material, such as fiber or box board wherein each of the four sides of the box has an extension at each end adapted to be folded inwardly to form inner and outer flaps for closing the ends of the box, the practice being to first fold one pair of flaps and then the other to form a double closer for the ends, a sealing medium being applied to the outer flaps t0 cause them to adhere to the inner vflaps and thereby seal as wel] as close the ends of the boX.

If the boxes are made from blanks or constructed so that the inner flaps have their edges spaced. apart, that is, if the lengths of the iaps are such that there will be a space between the aligning edges, it is apparent that the merchandise within the box will have a tendency to drop out during the pasof the box through the machine during` the time that the side flaps are hanging in vertical planes, preparatory to being folded into sealing position. It, therefore, bec-:nnen necessary to provide a shelf or runway which will not only hold the inner flaps in horizontal positions to convstitnte 'il-oor members for the merchandise but also eiiiciently provide a me chandise Support.

This invention contemplates means for Serial No. 470,033.

efficiently supporting the mechandise so that it will not accidently be dislodged from the hoi; during the sealing operation.

It is also desirable that means be provided for pressingin the outer flaps so that their meeting edges may come together to present a neat, efficient seal and to prevent the edges of the 'flaps where they are connected to the boi; from protruding.

,ln other words,` the boxes are usually rectangular and it is desired to have the finished package symmetrical so as to maintain the strength of the box and enhance its appearance.

The main feature of this invention is the provision of means for supporting the merchandise and for truing up the box during the scaling operation. There are other minor features of the invention which will appear hereinafter as. for example, the novel form of conveyor belt.

in order to present the invention ina comprehensive manner we will describe a machine in which these novel features are embodied, it being understood that the invention forming the subject matter of this application consists in providing the novel supporting means for the inner flaps and the mechandise, the truing or squaring mechanism, and the conveyor.

In the drawings,

Fig. l is a perspective view of the forward part of the machine looking toward the rear. A

Fig. 2 is a perspective view of the rear end of the machine looking toward the front.

Fig. is a front end view of the machine.

Fi is a perspective view of a box with the flaps extended. V

Fig. 5 is a fragmentary perspective View of the boi: showing some of the ,flaps folded.

Fig. 6 is a cross sectional view through the machine in front of the sealing means.

7 is sectional view on the line '7-7-'7 of Fig. 6.

Fig. 8 is a perspective view of the receiv-4 end of the box table. i

Fig. 9 is a perspective view of the delivery end of the boX table.

Fig. l isa cross sectional view through the machine at the delivery end thereof.

Fig. 11 is a perspective view of one of the bor; presser members, and

Fig. 12 is a perspective view of one of the box presser supporting brackets.

The mechanism is supported upon a frame consisting of the side bars 1 and 2 mounted upon the end standards 3 at the receiving end of the frame and the corresponding standards 4 at the delivery end of the frame. lntermediate the ends of the bars 1 and 2 and connected thereto are sets of

standards

5 and 6 which support certain mechanism to be referred to hereinafter. The standards 3 are provided with complementary standards 3 adjacent thereto and in line therewith to receive angle brackets 7 provided with bearings 3, in which is mounted a shaft 9 carrying sprocketwheels 10 and 11, which engage the links of the

chains

12 and 13 respectively, connected by the slats or cross bars 14 carrying` box-

engaging rollers

14 and 14" so that a conveyor is provided, between the slats of which the boxes are entrained as they pass from the receiving end of the machine to the delivery end thereof.

rlhe conveyor is supported at the delivery end of the machine by

sprockets

15 and 16 corresponding to those designated 10 and 11, and these are mounted upon a shaft 17 in bearings corresponding to the bearings for the shaft 9 and supported by the standards 4 and the standards 4 adjacent thereto. In other words, the mechanism for supporting the conveyor at the delivery end of the machine is substantially an equivalent of that described in connection with the receiving end of the machine so that the conveyor or belt may have a continuous movement imparted thereto by driving one of the shafts. In the present instance, we have shown the conveyor as being driven from the shaft 17 through the medium of a flexible connection illustrated as a chain 13, which passes around the sprocket 19 mount-- ed on the outer end of the shaft 17 and engages a sprocket 2O on the shaft 21 which is part of a reduction gearing 22 located near either the

sills

23 or 24 and which receives motion from a motor illustrated as an electric motor 25 on the base 26. Therefore, when the motor is operating, motion will be communicated to the shaft 17 through the driving connections just described and the functioning movement of the conveyor will be from the forward end of the machine to the rear end of the machine.

Supported by opposite pairs of

standardsJ

5 and 6 are brackets consisting of the angles 29 and 30 having their laterally projecting`

flanges

31 and 32 forming tables or supports for the

standards

33 and 34 respectively.

rlhe standards

33 and 34 are shown as con sisting of pipes connected at their upper ends by the cross pipe 35, midway of .vhich is a fourway union 36, connecting opposite pipe sections and which supports a threaded rod or bar 37 slidable in the union 36 and fixed in a socket 33 on a cross bar or support 39, having holes in its ends through which the standards and 34 project so that the cross bar or table will be guided vertically with respect to the frame formed by the

standards

33 and 34 and the cross bar 35.

Supported at opposite ends of the cross bar or table are sets of adhesive material distributors, one set being designated 40 and the othel1 41, and each consisting of a pan 42 constituting a receptacle or container for the adhesive material, preferably silicate of soda or water glass. Mounted within the receptacle or pan 42 is a delivery roller 43, bearing against a corrugated transfer roller 44 between the

rollers

43 and 45, the latter being mounted in brackets 46 on the container or pan 42, the roller being mounted on a shaft 4i' carrying a pulley 48 adapted to be driven from the shaft 21, as will be presently explained.

The distributing,- roller 45 is adapted to distribute the adhesive material upon the upper flaps of boxes as they pass between the lower portions of the rollers 45 and the supports or bracket blades 50, as will be clearly apparcnt'by reference to 7, it being' apparent that the adhesive material will be spread over the flaps as they pass by the founts or containers 42.

By reference to Figs. 1 and 6 it will be observed that the inner end of the shaft 4'? and the inner end of the shaft 51, which carries the roller 43, are provided with sprockets 52 and 53 around which a sprocket chain 54 passes so that when the shaft 4T turns, the motion will be comnninicated to the roller 43 by means of the sprockets and chain just described. The lower founts on tables 31 and 32 supply adhesive material to the under side of the lower flaps. These founts consist of reservoirs in which are. mounted rollers 56 on t-he shaft 5T, the shaft 5T being driven through the medium of the pulleys 53 so that adhesive material will be applied to Ythe under side of theI lower flaps :is tney pass between the rollers 56 and the bracket blades 59, mounted upon the standards and 34, shown.

The pulleys 43 and 53 are driven from the pulleys G0 on shaft 21 through the medium of the flexible connection or belt Gl, which passes over the idler 62, around pulley 48, over pulley 53 and back to pulley7 69, shown in Figs. 1 and 2. i

ln order te present the boxes te the ad.- hes`ve applying devices, it is desirable that th y be continuously fee from the receivl mg enc. the machine to the discharging l. (l i) end thereof and that they pass along a table in such manner that certain flaps may be manipulated to lpresent themselves at the proper time and in the proper manner to the adhesive distributing mechanism.

As the bottom flaps move away from the body of the box to receive the adhesive material, it is necessary thatthe contents be held in place and to this end means is provided whereby first one side flap may move into unsealing position while the other side flap remains on the table and supports the inner end flaps to retain the contents of the box, the construction of the table being i such that the second side {ifap may be released after the box has moved along the table to a position where the table alone will vhold up the end flaps. In other words, there is no time when there lis any liability of both the end flaps moving out` of position for supporting the contents of the box until suoli time as the side flaps are adequately supported by the table. The construction whereby this result is yeffected will i be specifically referred to hereinafter.

An important part of our invention is illustrated in Figs. 3, 8 and 9 as consisting of the table 63, having a laterally curved or concave anterior portion 64 of substantially the width of the bottoms of the boxes to be passed thereover. In rear of the anterior portion 64 is a cutaway portion or offset 65, slightly in excess of the width of one of the 4two longitudinally hinged flaps lor

closure members

66 and 67 of the box 68. The cutaway or offset portion is so disposed that as the vbox moves along the table, one of the flaps, for example 67 will drop and swing outwardly into the cutaway portion shown in Fig. 8. As the box progresses toward the discharge end of the machine, the progression being induced by its entrainment between the cross slats and rollers of the conveyor, it will pass over anotherl offset or cutaway port-ion 69 on the opposite side of the table 63, so that the flap 66 will drop and swing outwardly, as shown in Fig. l. During this time the upper longitudinally hinged flaps 70 and 7 'l are slightly raised so they will come in contact with the pointed end 72 of the spreader member` consisting of a triangular body rigid with the adjustable table or bar 89. The rearwardly and outwardly diverging

sides

73 and 74 of the spreader will force the

flaps

70 and 71 outwardly, as shown in Fig. l, the inner end flaps 75 and 76 `being held in horizontal planes b y the smoother bar 77, projecting from the spreader 72, as clearly seen in Fig. l. The box vis conveyed beneath the spreader 7:? to a relatively broad portion of the table 63 having forwardly extending, chamfered edges 78 and 79, which serve Vas spreaders for' the

flaps

66 and 67, so that when the box has reached the relatively broad portion constituting the adhesive applying station, the

flaps

66, 67, 70 and 7l are all held in sub stantially horizontal planes, the

flaps

66 and 67 passing over the delivery rollers 56 and the

flaps

70 and 71 passing beneath but in contact with the delivery rollers 45 so that adhesive material, for example, water glass, is applied to the inner faces of the respective flaps during their continuous passage along the table 63.

After the box leaves the adhesive applying mechanism, the upper flaps are bent in upon the

inner flaps

75 and 76 by the forwardly projecting fingers 80 and 81 of the rearwardly directed closing member 82, from which they pass under a smoothing blade 83, to a vertically adjustable sealing frame carried by the main frame of the machine.

To the rear of the adhesive-applying mechanism, the table 63 is narrowed and provided with staggered recesses 84', 85', corresponding to the

recesses

65, 69 at the front end, so that as the box leaves the adhesive-applying mechanism, the side flaps drop to vertical position and vare then turned in the recesses. Projecting outwardly and forwardly from the rear ends of the

recesses

84 and 85 and preferably formed integral with the table, are flap-folding

arms

84 and 85, Vhaving chamfered edges engeageable by the side'laps as the box moves along the table, to turn the side flaps back against the bottom of the box to which they are sealed on contact.

Vhile the side flap 67 is hanging in the recess 84, and the side flap 66 is hanging along the edge of the table (Fig. V9), after leaving the adhesive-applying mechanism, the inner end flaps are held closed by, and the contents of the box supported from, the table. As the box moves along the table, the arm 84 engages the flap 67 and turns it against the bottom end flaps, sealing it thereto and moving the side of the box onto the portion of the table opposite recess 85. Continued travel of the box carries the flap 66 to engage arm 85 and be turned thereby to sealing contact With the bottom end fiaps. The box then moves onto the broad portion 86 of the table and the flaps are pressed to place 'during further travel of the box to effect sealing.

By reference to .the drawings it will be apparent that as the distributing rollers for either the top sealing devices or the lower sealing devices rotate in contact with the flaps, the adhesive lwill be distributed over a sufficiently wide area tov insure Vample material being deposited Vthereon so as to avoid the liability of an imperfect adhesion `or sealing `in the `final stages of the operwe have provided a sealing frame consisting of a substantially rectangular member 87 having

projections

88 and 89 on opposite sides thereof, and vertically guidable in slots 90 and 91 in the

guides

92 and 93, the pairs of guides 92 and the pairs of guides 93 being` connected by cross bars 94 and respectively. There are vertically

adjustable screws

96 and 97 in the cross bars and so that when the screws are adjusted vertically, the roller carrying frame 87 will be raised or lowered in response to turning movement of the hand wheel 98 and 99, the screw 37 being controlled by a hand wheel 10Q, the hub 101 of which bears against the edge 102 of the coupling 36.

The socket 103 and the screw 37 connected to it, are braced by a brace 1041 connected to the socket 103 and to the smoother 77 rigid on the spreader 72, this being a detail of construction which may or may not be omitted, according to the strength of the parts of which the machine is made up.

ln order toprovide for boxes of different widths, we have included supplemental side rails 105 and 106, projectable toward and retractable from the longitudinal center of the table. 63 through the medium of the adjusting links 107 which are fastened to the

bars

105 and 106 and the side bars 1 and 2 by the

nuts

108 and 109 respectively, it being obvious that the

supplemental bars

105 and 106 will constitute adjustable guide rails which will constrict or increase the width of the passageway for the boxes as they travel along the table 63 and hold the boxes closely, so that as they are pushed along the table by the convevor cross bars, friction on the sides will sufficiently retard the boxes to square them.

rThe construction of the machine thus far described is generically like a machine already in use. Our invention contemplates vthe provision of certain improvements on such machines' which we will now proceed to describe.

By reference to Fig. 8 it will be seen that the shelf or table 63 is curved laterally and it is provided with wear strips or straps 110 which run lengthwise thereof to serve as guides for the box and the flap. Immediately above the forward end of the table 63 is an elongated shelf or strip 111. which extends suitable distance along the table to support the

flaps

75 and 7 6 as well as the contents of the box 68.

The shelf or runwayl 111 extends to the broad portion of the table 63, havingI the chamfered or

curved portions

78 and 79, which fold the

flapsy

66 and 67 outwardly into adhesive-receiving position. At this point the box passes olif the shelf or runway 111 onto the intermediate portion of the table and then onto the rear portion, it

being understood that the broad flat portion will support the contents of the box.

As the box leaves the broad portion of the table 63 and passes the cut-out portions 84C and 85, the contents of the box will be supported by the bridge strips 112 and 112 respectively until the arms 811 and 85 fold the

flaps

67 and 66 against the bottom of the box in the order named. rlhen the

flaps

66 and 67 will support the contents of the box during the rest of the movement of the box through the machine.

The support table or runway 111is an important feature of our invention as are the

supports

112 and 112 because without such features there would be liability of the contents of the box 68 dropping through the various cut-out

portions

65, 69, 81 and 85 which, however, cannot take place with the improvements incorporated in this machine.

Another important feature of the invention is the means for maintaining the inturned bottom flaps in their proper positions. To this end we have provided a separatoi1 bar 113 longitudinally of the rear end of the machine, which passes between the edges of the

flaps

66 and 67 as the box is being subjected to sealing pressure and in order to square up the box proper`y, we provide certain presser devices, best shown in Figs. 10, 11 and 12. ln addition to the

bars

105 and 106 we provide certain additional presser devices, for example, on the bars 1 and 2 are adjustably secured U- shaped brackets 111- and 115, the upper bars 116 of which are provided with elongated slots 117 which engage

bolts

119 and 120 in the bars 1 and 2` the bars 116 being adjustably held in place by the thumb screws 121 and 122. The lower bars 123 are provided with elongated slots 1241, in which are mounted longitudinal bars 125 substantially in line with the table 63 so that they are adapted to press against the bottom flaps 66 and 67, it being understood that the bars 125 are loosely mounted in the slots 124: through the medium of the bolts 126 and are yieldingly urged by the springs 127, the tensions of which may be controlled by the rods 128 and the thumb nuts 129. The rods 128 are secured to the bars 125 and project through the openings 130 in the vertical bars of the U-shaped brackets 115, as clearly seen in Figs. 10 and 12.

The slotted connections 117 with t-he bars 1 and 2 allow the brackets to be adjusted laterally for different widths of boxes. Therefore, as the box passes over the table 63 with the separator bar or knife 113 between the

flaps

66 and 67, pressure is applied against the opposite edges of said flaps so they will be pressed inwardly against the bar 113 to true up the corners as well as to maintain the conguration of the box, the bars 125 assisting the

bars

105, 106 in this capacity.

There are two brackets on each side of the machine, each of which constitutes a seat for supporting the bars 125 so that the bars will extend through a. considerable length of the machine and be properly supported,

. as clearly seen in Figs. 2 and 10.

The top flaps and 71 of the boX are also provided with pressers, the construction of which wi`ll be seen by reference to Figs. 10 and 11. On each side of the machine are two bracket members 131, each of which consists of a` bar 132 having elongated

slots

133 and 134 which are engaged by the; threaded

studs

135 and 136 on the

angles

86 and 87 and are adjustably held by the

wing nuts

137 and 138. Each outer end of eachbar 133 is provided with a hook! shaped portion 139, the lateral extension 140 of which is provided with a slot 141 in which is a sliding bolt 142 which carries the presser bar 143 rigid therewith so that the bars may have movement with respect to the extension 140. There is a coil spring 144 between the bar 143 and the vertical portion of the hook-shaped portion 139 and the tension of said spring can be controlled through the medium of the threaded rod 145 and thumb nut 146, as clearly seen 1n Fig. 11. The members 131 can be adjusted vlaterally on the

angles

86 and 87 to provide for different widths of boxes and will con form in their adjustments to the adjustments of the lower bracket members 11.4 and 115. The bars 143 will be cojextensive in length with the bars 125,- as will be clearly seen in Fig. 2.

It will, therefore, be apparent that the boxes will be trud to maintain their contour as they pass from the machine and thereby present symmetrical packages.

By reference to Figs. 1, 8 and 9 1t will be observed that each offset portion or

recess

65 and 69 is substantially the same width as the

flaps

66 or 67 which it is to receive. The runway or shelf is sufficiently short to enable the box to be placed on the anterior portion G4 of the table 63 without touching or being as far advanced as the rearward end ofthe shelf or runway, because of the fact that the table is a trough, the outer flaps drop slightly downward, providing sufficient space between the outer and inner flaps for the shelf or runway to insert itself between them when the box is moved forward by the conveyor. As the boites entra-ined by the conveyor move along the table `63, the Hap G7 will firstmeet the cutaway portion formed by he offset 65 and since the offset 65 does not exceed one-half the width of the box, there will' be no support for the flap 67. Therefore, the flap will drop. As the' bor.v moves toward the rear of the machine, the second flap 66 will drop, as clearly seen in Fig. 1. The end flaps of the box, however, will be supported by the shelf or runway 111 and even if there is a space between the flaps, the contents of the box will be efficiently supported by the shelf or runway 111 so that the contents of the package will be retained in the boX. Then as the box moves forwardly, it will pass over the broad portion of the table while the flaps are being pasted by the pasting mechanism. At the same time, the

flaps

70 and 71 will be opened and pasted, as indicated in Fig. 1.

As the box leaves the pasting mechanism, the top flaps will be folded into sealing` position and the lower side flaps will drop into the

spaces

34 and 85. At this time the end flaps and 76 as well as the contents of the boi: will be supported by the bridge strips 112 and 112 until the side flaps G6 and 67 are folded inwardly against the end flaps by the projecting portions 84 and S5, so that the side flaps 6G and 67 will then efliciently support the end flaps 75 and 76 as well as the contents of the box.

The entraining conveyor consisting of thek chains, the cross bars 14 and the

rollers

14 and 14 will be effective in continuing the traversing movement of the boxes under the rollers of the sealing frame so that they will be slightly squeezed between the rollers and the table portion 86 and the preliminary sealing assured so that when the box is discharged from the machine. any danger of unsealing will be eliminated.

At thesame time the box is' passing under the sealing rollers, it is also being subjected to a slight side pressure from the `flap presser bars 125 at the lower portion and the top presser bars 143 for the top flaps, as is clearly apparent by reference to Figs.10, 11 and 12.

AVt will be observed by reference to Fig. 2 that the shaft 21 is driven by a chain 147,

which passes around a sprocket 148 on said shaft and around a sprocket 149 on shaft 17 so that the shaft 21 will be driven from the power source to rotate in the proper time relation withy the co-operatingr parts of the machine.

Therefore, when the box leaves' the machine, it will be, to all intents and purposes, efficiently sealed. time being necessary, however. in some instances for the adhesiveV to harden, as will be well understood.

TWhat we claim and desire to secure by Letters-Patent is:

. 1. A machine for pasting and sealingA folded. boxes having end flaps, comprising ay table over which the boxes are adapted to travel, the table having alternating recesses 'through which the flaps may drop in sequence, and a superposed table above the first named table for supporting the boxes' throughout a part of their travel. the superposed table being of substantially uniform width whereby the contents or the boxes will be held against displacement duringv the time that the flaps are in dropped positions.

2. A machine for pasting' and sealing folded boxes having end flaps, comprising` a table over which the boxes are adapted to travel and having' alternating` recesses through which the flaps drop in sequence, a superposed table above the iirst named table extending throughout a portion. of the length ot the first named table and of suitcient width to support the contents o1 the boxes during` their travel past the recesses, and means for pasting the flaps.

3. A machine for pastingand sealing folded boxes having end flaps, comprising a table over which the boxes are adapted to travel and having alternating; recesses through which the `flaps drop in sequence, superposed table above the first named table extendingthroughout a portion oE the length of the first named table and oi su'llicient width to support the contents of the boxes during their travel past the` recesses, means ior pasting' the flaps, and means for closingthe flaps atter the boxes have passed olii' the superposed table.

AN machine for pasting and sealing` folded boxes having end flaps, comprisinga table over which the boxes aro adapted to travel and having" alternating recesses through which the flaps vdrop in sequence, a superposed table above the lirst named table and bridging; the recesses to support the boxes and prevent the contents thereof from dropping therefrom while the liaps are in dropped positions, means 'for pasting the flaps, means for closingthe flaps after the boxes have moved oill the superposed table, and means 'for pressing the closed flaps to the boxes.

5. A machine `for pasting and sealing folded boxes having end flaps, comprising a table over which he boxes are adapted to travel and having recesses into which the flaps drop, a superposed table over which the boxes move while the riads are in droppedV position whereby the contents of the boxes will be supported against dis` placement, means for moving` the boxes through the machine, means for applying;- paste to the flaps, and means for closing the flaps.

6. A machine for pasting; and sealing folded boxes having end flaps, means for supporting' a box and its contents from opposite sides of its center while the flaps ot the other side are open, means for applyu ing paste to the open flaps, means for closing the aps, means for moving the box through the machine, means for exerting pressure against the edges of the sealed flaps Afrom opposite sides of the box, and a cen` trally located separator bar in the machine against which the free ends of the liaps contact when pressure is applied on opposite edges thereof.

7. A machine for pasting, and sealing folded boxes having` bottom sealing vflaps at their side and end edges, comprising a table over which the boxes are adapted to travel, the construction of the table being such that lirst one side ilap of the boxes and then the other will drop onto the table, and a superimposed table above the first named table 'for supporting the boxes and their contents durinp` the time that a side flap is in dropped position.

8. A machine for pasting and sealing; folded boxes having` bottom sealing iiaps at their side and end edges, comprising a table over which the boxes are adapted to travel, the construction oi the table being such that lirst one side flap of the boxes and then the other will drop onto the table, a superposed table above the 'lirst named table for supporting the boxes and their contents during the time that a side iiap is in dropped position, means for applying paste to the dropped flaps, means for moving the pasted flaps into sealingposition, means for exerting` pressure against the connected edges of the sealed flaps, and means 'for convevinlfg` the boxes past the pressure means.

9. A machine for pasting and sealing folded boxes having end fla as, comprising two tables, one of which is superposed above the other, the upper table having` a uniform area throughout, the lower table having a concave entrance at its forward endx and provided with offset recesses into which the flaps may drop during the passage ot the box over the superposed table, means 'for pasting the dropped flaps, means Yor moving them into sealing position, and means for conveyingthe box through the machine.

l0. A machine for pastingand sealing folded boxes having` end as, comprisingY two tables, one of which is sup posed above the other, the upper table having` a uni 'torn area throughout, the lower table having;` a concave entrance at its forward end anal provided with offset recesses into which the flaps may drop during the passage of the box over the superposed table, means for pasting the dropped flaps, means for moving them into sealingposition, and means for conveying the box through the machine, said means comprising,` an endless belt having transverse slats with box-engaging rollers supported above and below the slats.

11. A machine for pasting and sealing; folded boxes, comprising' a table over which the boxes are adapted to travel, means for opening the side flaps o'l' the boxes, means for applying paste thereto, means for moving the pasted aps into sealing position,

and means for movingthe boxes through the machine, said means comprising an endless conveyor having its eieetilve portions supported on opposite sides of the boxes and traveling through a plane between the upper and lower ends of the boxes, said conveyor having transverse slats and rollers supported on opposite edges of the slats to engage the boxes between theirupper and lower portions.

In testimony whereof we aHiX our signatures.