US2503984A - Machine for pasting the edges of sheets to each other - Google Patents

Description

April 11, 1950 E. -WUKO- 2,503,984 MACHINE FOR PASTING THE EDGES 0F SHEETS TO EACH OTHER Filed May 7, 1948 3 Sheets-Sheet 2 v 52 Y r azymzza BY G ATTORNEY April 11, 1950 5.. wuKo 2,503,984.

MACHINE FOR, PASTING ms BDGES 0F snm'rs 'ro men 0mm 3 Sheets-Sheet 3 Filed May 7, 1948 INVENTOR [um Mum WW1. A

- A'ITORNEY Patented Apr. 11, 1950 OFFICE MACHINE roa rAs'rmG 'rnn rmons or snnars 'ro anon ornna Emil Wuko, New York, n. Y., assignor to n. were 00., Inc., New York, N. Y., a corporation of New York Application May 7, 1948, Serial No. 25,564

Book Manufacturing 18 Claims.

This invention relates to an improved tipping or pasting machine for the application of paste or other adhesive to the edges of paper sheets, plates or folded signatures, and for the attachment of such articles to each other along their edges.

The machine is specially adapted for use in connection with book binding and in the attachment of the edges of single or folded sheets to each other, and the machine comprises means for feeding the sheets in pairs and supported upon their lower edges, means for application of the adhesive to one sheet of each pair along a line preferably spaced slightly from one edge 01' the paper and means for receiving the assembled pairs of sheets.

One object of the present invention is to provide a pair of rotary members for receiving the pasted sheets with the strip of paste therebetween and to form one or both of such members with a circumferential recess or gap in alignment with the strip of paste whereby pressure upon the paste is avoided. Still another object of the invention is to provide adjusting mechanism whereby the rotary members receiving the pasted sheets may be conveniently manipulated to straighten or align the sheets and to insure that the sheets or the like of each pair accurately coincide with each other. Another object is to provide a rotating disc having a peripheral edge carrying "the paste and rotating in contact with the paper to be pasted. Another object is to mount the paste applying disc in a paste container having a rotary agitator for feeding the paste to the disc. Still another object is-to provide an endless chain with fingers for engaging the trailing edges of the sheets and the like as they are conveyed through the machine and to provide spring mechanism whereby said fingers yield in the event of an overload thereon and thus avoid clogging the machineby conveying more than the normal number of sheets, upon failure of the mechanism feeding the sheets to the chain.

With these and other objects in view, the invention consists in the novel construction and arrangement of parts of the machine as hereinafter described, illustrated in the accompanying drawing, and particularly pointed out in the appended claims, it being understood that various changes in the form, construction and minor details may be made without departing from the spirit of the invention or sacrificing any of the advantages thereof.

The machine is so constructed and arranged '2 that the paper sheets are disposed at a suitable angle to the vertical while being conveyed by the action of the fingers engaging the trailing edges of the sheets, but for convenience of illustration certain of the figures of the drawings show the mechanism as though the sheets were disposed in an upright position.

In the drawings, Fig. 1 is a plan view of the machine. Fig. 2 is a sectional view on the line 2-2 of Fig. 1 showing a stack of sheets with means for feeding same to the machine. Fig. 3 is a plan view of the pasting mechanism, being an enlarged view of the central part of Fig. 1. Fig. 4 is an elevation of the same partly in section on the line 4-4, Fig. 3. Fig. 5 is a plan view of the delivery end of the machine, being anenlarged view of the right-hand end of Fig. 1. Fig. 6 is a front elevation viewed in the direction indicated by the line 66, Fig. 5. Fig. 7 is a fragmentary view of one of the sheets. Fig. 8 is a similar view showing a pair of sheets assembled together, and Fig. 9 is a detail showing a part of one of the receiving rolls.

In the followin description, the articles handled by the machine are referred to as sheets, but it is to be understood that such articles may :be single, multiple. or folded sheets,

plates, signatures or pieces, and, when used in connection with book bindings, single sheets or plates and folded signatures may be fed to the machine at different positions in order that each sheet or plate may be caused to coincide with and be attached to a signature.

Referring particularly to Fig. 1, the machine is formed with two tables l2, [3, for carrying stacks of sheets Ill, and II, respectively, and mechanism such as diagramatically illustrated at Fig. 2 may be employed for the feeding of such sheets to the machine, the feed mechanism for both stacks being similar. The table I2 is provided with guides H for engagement with the edges of sheets Ill and the suction arm l5 (Fig. 2) is actuated in the well known manner to pull down one edge of the lowermost sheet in the stack, and in timed relation with this operation, the mechanical fingers l6, l1 grip said edge when in the position shown in dotted lines at Fig. 2, and as the arm l8 swings counterclockwise the gripper fingers pull down the sheet which is then released .by the action of the roller I9 on the member 20 so that the gripping jaws are simultaneously opened and the sheet is allowed to lie in an inclined position against the support 2| as shown at Fig. 2. For each stack, two sets of grippers H are provided as shown at Fig. 1. and

.respect to the position of for improving the control of the sheets by the grippers each stack plate l2, I3 is preferably rovided with a ridge 22 so that each individual sheet is curved or bowed and this curvature of the individual sheet is maintained as the grippers swing downwardly, and the sheets are thus feed more accurately than they would be if they were not so curved, and the objections ordinarily encountered by the adhering oi the sheets due to static electricity and other causes are entirely avoided.

When the sheet I is fed to the position shown at Fig. 2, its side edge is engaged by one of a series of fingers'23 mounted on a sprocket chain 24 carried by-sprocket wheels 25, 26, 21, and the continuous movement of the chain 24 causes the said fingers 28 to convey the sheets l0 through the machine.

As the sheet I! is brought into alignment with the rotary disc 28, paste or other adhesive from a container 29 is applied to the sheet in the form of a strip 38 (Figs. 1 and 8), spaced about irom the extreme edge of the sheet and having a width of about Va". As shown at Figs. 3 and 4, the paste-applying disc 28 is mounted in the lower part of the container 28 and extends outwardly therefrom, and a rotary stirring device or agitator 8| is also mounted in the container to insure a continuous feed of paste to the periphery of the disc 28. The agitator 8! is driven by a gearwheel l1 actuated by a gear wheel 33 which also actuates the said disc 28 and is driven by a gear wheel 84 on a spindle 35 carrying the sprocket wheel 28 driven by the said chain 24.

In its preferred form the paste container 29 is mounted on a pivot 31 and has an adjusting screw 88 whereby such container with the paste applying disc may be accurately adjusted with the sheet to which the paste is being applied, and the drive mechanism is such that the surface speed of the periphery of the disc 28 is just slightly less than the speed of movement of the sheet being pasted so that a wiping rather than a rolling action is obtained. The point at which the rotating peripheral edge or the disc moves into the container 29 is not restricted but the opposite sidewhere the said edge moves outwardly-is provided with an adjustable screw 58, the inner end or which cooperates with the periphery of the disc to regulate the thickness of the film of adhesive carried to the paper by said periphery.

The sheets II from the stack plate is are fed to the machine in accurately timed relation to the motion of the conveyor chain, the feed being effected by mechanism similar to that shown at Fig. 2, and these sheets II are so placedin the machine that they are separated from the sheets ill by the separator plate 89. After each finger 23 conveys a pasted sheet In past the pasting station,- it picks up a sheet II and thence conveys such sheets suitably spaced from each other until each pair of conveyed sheets has its leading edges introduced between the rotating rollers 40, 4|, which are rotated at a surface speed higher than the speed of the chain 24 so that the pairs of sheets thus received by the rolls are drawn away from the fingers 28 by which they were conveyed through the machine and are delivered to a suitable receiving stack.

The rolls 48, 4| are driven-se.e Figs. 5 and 6- by meshing gear wheels 42, 43 while the wheel 43 is driven by a gear idler 44 from a gear 48 mounted ona spindle 48 which also drives the chain sprocket 21 and is itself driven by a bevel wheel 1 to which motion is imparted by a bevel engaging means flanking sheets supported wheel 48 having a spindle 49 actuated by sprocket gear 50 from a suitable source of power.-

The roll 40 is recessed or circumferentially grooved at 5| as clearly shown at Figs. 6 and 9, and this recess or groove is in exact alignment with the strip 39 of adhesive or paste, so that no pressure is directly exerted upon the strip of paste and there is thus no danger or the paste squirting from between the edges or the sheets with consequent smearing of adjacent parts. A further advantage of this recessing or grooving of the roller 40 is that, in the event of a pasted strip being fed to the rolls without a complementary sheet, the exposed strip of paste does not smear the roll and thus cause improper application of paste to the succeeding sheets. The roll 40 is mounted .with adjusting screws 52, 53 and springs 84, 55 so that the degree or pressure between the rolls 40, 4| flanking the line of paste may be regulated and by such adjustment the roll 40 may be caused to feed the sheets in accurate register with each other without danger of the sheets being pasted together in angular relation.

In operation, the sheets l0 and H are fed to the machine in accurately timed relation to each other and each spring finger 23 first conveys a sheet Ill, which receives a strip or paste as it passes the rotating disc 28 and the said finger then picks up a sheet ll so that the two sheets are then fed side by side but in spaced relation to each other until their leading edges are introduced between the rolls 40, 4| by which they are delivered from the machine.

The spring fingers 28 are each mounted on the sprocket chain 24 on one of the pins 51, while a projection 58 engages the projecting end of an adjacent pin 59 and a light tensioned spring 60 holds the finger yieldingly in a position substantially at right angles to the chain and the tension of the spring 60 is such that, in the event of a fault resulting in a plurality of sheets being simultaneously fed to the machine, the finger will yield and prevent clogging of the machine by the conveyance of sheets having more than the normal resistance to motion.

Although the drawings and the above specification disclose the best mode in which I have contemplated embodying my invention, I desire to be in no way limited to the details or such disclosure, for, in the further practical application of my invention, many changes in form and construction may be made as circumstances require or experience suggests, without departing from the spirit of the invention within the scope of the appended claims.

What I claim is:

1. A tipping machine of the character described for connecting the edges of sheets to each other, comprising means for conveying a pair of sheets supported on their edges, means for applying a strip of paste to one of the sheets, close to but slightly spaced from the sheet edge, and a pair of rollers receiving the sheets with sheet the pasted strip between the sheets.

2. A tipping machine of the character described, comprising means for conveying pairs 0! on their edges, a rotary disc applying a strip of paste to one of the sheets of each pair, and a pair oi. rollers receiving the sheets with the strip of paste therebetween and with sheet-engaging means flanking the pasted stri and recessed in alignment with such strip.

3. A tipping machine oi! the character described. comprising means including a sprocket chain conveying through the machine, pairs of sheets supported on their edges, means for applying paste to one of the sheets of each pair, a roller receiving the sheets with the pasted strip therebetween, and a groove in the roller in alignment with the pasted strip to avoid the application of pressure to such strip.

4. A tipping machine of the character described, comprising means including a sprocket chain with sheet-engaging fingers for conveying through the machine, pairs of sheets supported on their edges, means for applying paste to one of the sheets of each pair, a roller receiving the sheets with the pasted strip therebetween, and a groove in the roller in alignment with the pasted strip to avoid the application of pressure to such strip.

5. A tipping machine of the character described, comprising means for conveying through the machine, at uniform speed pairs of sheets supported on their edges, means for applying a strip of paste to one of the sheets in each pair in a line spaced from one edge of said sheet, and a pair of rolls receiving the pairs of sheets with the pasted strip therebetween and delivering same at a greater speed, and a circumferential groove in at least one of said rolls in alignment with the pasted strip.

6. A tipping machine of the character described, comprising means for feeding through the machine, individual sheets supported and sliding upon their edges, sprocket means conveying pairs of such sheets at uniform speed through the machine, means applying a strip of paste to one of the sheets in each pair in a strip spaced from one edge of said sheet, and a pair of rolls receiving the pairs of sheets with the strip of paste therebetween and delivering such sheets at a speed greater than the speed of conveyance, a circumferential groove in one of said rolls in alignment with the pasted strip, and spring means applying said roller to the sheets.

7, A tipping machine of the character described, comprising means conveying through the machine, pairs of complementary sheets supported upon their edges, a rotary disc applying a strip of paste to one of the sheets of each pair, a container for the supply of paste to said disc, an agitator insuring a uniform feed of the paste to the disc, and means for receiving and delivering the pasted sheets.

8. A tipping machine of the character described, comprising sprocket means conveying through the machine, pairs of complementary sheets each supported and sliding upon one edge, a rotary disc with a peripheral edge applying a strip of paste to one of the sheets of each pair, a container for the supply of paste to the periphery of said disc, a rotary agitator insuring uniform feed of thepaste to the disc, and a roll, recessed in alignment with the pasted strip, receiving and delivering the pasted sheets.

9. A tipping machine of the character de scribed, comprising a sprocket chain with uniformly spaced fingers, engaging and conveying the sheets through the machine while supported upon their lower edges, means for applying strips of paste to certain of the sheets, adjustable rollers receiving pasted and unpasted sheets, and causing their adherence to each other, and a circumferential gap in one of said rollers to prevent pressure upon the pasted strip.

10. A tipping machine of the character described, comprising a sprocket chain with uniformiy spaced fingers engaging and conveying the sheets through the machine while supported upon their lower edges, a rotating disc applying strips of paste to certain of the sheets, a roller receiving pairs of pasted and unpasted sheets, and causing their adherence to each other, means driving the said roller at a surface speed greater than the speed of said chain, and a circumferential gap in said roller to prevent pressure upon the pasted strip.

11. A tipping machine of the character described, comprising means conveying a series of sheets through the machine while supported upon their lower edges, a rotary disc for the application of strips of paste to successive sheets, means driving the pasting disc at a surface speed less than the speed of movement of the sheets through the machine, and means for receiving and delivering the said sheets.

12. A tipping machine of the character described, comprising a chain conveying a series of sheets through the machine while supported upon their lower edges, a rotary disc with a periphery for the application of strips of paste to successive sheets, means for driving the pasting disc at a surface speed less than the speed of movement of the chain and of the sheets through the machine, and rollers for receiving and delivering the said sheets.

13. A tipping machine of the character described, comprising means for feeding a series of sheets through the machine while supported upon their lower edges, means for feeding a second series of sheets to the machine, means for conveying successively the sheets of the first series, means for applying strips of paste to said sheets, means for aligning the sheets of the second series successively with the sheets of the first series, and means for successively receiving pairs of sheets and delivering said pairs with the sheets thereof adhering to each other.

14. A tipping machine of the character described, comprising means for feeding a series of sheets to the machine while sliding upon their lower edges, means for feeding a second series of sheets to the machine, a chain for conveying successively the sheets of the first series, means for applying stripsof paste to the sheets of the first series, means for pairing each sheet of the second series successively with a sheet of the first series, roller means for successively receiving the pairs of sheets and delivering said pairs with the sheets adhering to each other, and a recess in said roller means to prevent pressure upon the paste strips.

15. In a machine according to claim 1, a sprocket chain for conveying the sheets through the machine, a finger on the chain for engaging the trailing edges of the sheets, and spring means for holding the finger in operative position under normal load. 60

16. In a machine according to claim 1, a sprocket chain conveying the sheets through the machine, a series of uniformly spaced fingers on the chain for engaging the trailing edges of the sheets, and spring means for holding each finger in its operative position under normal load.

17. In a machine according to claim 1, a pasting disc for peripheral engagement with the sheets to apply strips of paste thereto, a paste container, a slot in the container through which the disc projects, and an agitator in the container for feeding the paste to the periphery of the disc.

18. In a machine according to claim 1, a pasting disc for peripheral engagement with the sheets tuner, 9 109 in the container throuah which the UNITED STATES are disc projects, and an adjustable device coop- Number Nme v t eating with the periphery Of the disc 30 deter- 2 23 w t Jan. 29 1m mine the t the film of push carried a by the p ip y of the d for transfer to the 9 1,876,063 gush, use 6, 1933 1,929,903 Schindler Oct. 10, 19s:

I I I W 4,932 Kushera et a1 17, 9 5 REFERENCES crmn $384,568 Dfllmm m 9, 1

The following references are of record in the 10 me or this patent:

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