US853480A - Machine for gluing blanks. - Google Patents

Description

No. 853,480. PATENTED MAY 14, 1 907. P. S. SMITH.

MAGHINE FOR GLUING BLANKS.

APPLICATION FILED mm 12, 1905.

UNITED STATES- PATENT OFFICE.

PHILIP S. SMITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO STOKES &. SMITH COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION OF NEW JERSEY.

Specification of Letters Patent,

Patented May 14, 1907.

Application filed June 12,1906. Serial No. 264,956.

To alt whom it may concern.-

Be it known that I, PHILIP S. SMrrn, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented new and useful Improvements in Machines for Gluing Blanks, of which the following is a specificatlon.

My present invention relates to certain new and useful improvements in machines for gluing blanks, and it has for its prime object to provide a machine of very simple construction for applying a uniform coating of "lue to the entire surface of one face, of a blank during its assage in one direction over a single glue-app ying roller and for preventing the said ank from adherlng to and wra ping around the roller during the glueap ymg operation.

11 manufacturing paper boxes having an applied covering (generally a sheet of relatlvely thin paper) the practice in eneral use is to form the box and then app y a blank formed of a sheet of thin pa er to the surface of the formed box, one su ace of the blank bein coated with glue. before application to the ox. In order that the covered 'box should besmooth and free from blisters, etc.,

' itis essential that the entire surface of the tributed. Hence it is not blank receive the lue coating and that the coating be applied evenly. Owing to the fact that great difficulty is had in so coating the surface of the blank with the glue, due

ture that the application of the glue tends to soften the paper, and the further fact that the application of the glue causes the blank to curl, etc., es ecially when the application is b ybringing t e surface'into contact with a glue-carrying roller, the application of glue to the surface of the blank is generally performed. manually. The a plication of glue to the surface, of the blank manually is not only a slow andtedious operation, but it has been found that the coating is unevenly disossible to form uniformly-coated blanks in t 's manner. By

providing a machine which will apply the coating of lue to the blank rapid and uniformly t oughout the entire surface of the blank a great saving of time and expense in the manufacture of the box will be had,-

thereby decreasing the-relative cost of the completed box.

Briefly and generally stated, the invention comprises a glue tank, a glue distributin roll rotatably mounted therein, a glue, appIying roller rotatable in surface contact with the said distributing roll and receivin a c'oatin of glue therefrom, a presser roler located above and alwa sout of contact with the glue applying ro ler, and a plurality'of stripper wires or strands located between the glue applying and presser rollers, respectively, and extending transversely to the axis thereof, said wires, or strands serving to prevent the sheets or blanks fed to the machine from adhering to and wrapping about the glue applying roller.

The invention further comprises a novel construction of glue applying roller, which is preferably, but not necessarily, made of some suitable. compressible or. elastic material, such as rubber or rubber composition, said roller having suitably spaced, relatively narrow peripheral grooves and stripper wires, strands or bands extending transversely to the axis of said roller and arranged'in line with the. grooves therein, the width of the said wires, strands or bands bein. substantially the same as the width of t e 'peripheral grooves, whereby to provide a substantially continuous or unbroken surface through out the length of the glue applying roller at the oint where the said wires, strands or ban s cross the latter, in order that a sheet or blank, when passed over the same, will receive a continuous coating of glue.

. The invention further comprises means for individually tightening or tensioning the sev eral stripper wires, strands or hands, and for maintaining them taut, in order that they may the more effectually perform their func tion.

Finally, the invention consists in the improved construction and combination of parts hereinafter fully described and illustrated in the accompanying drawings, and then definitely pointed out in the appended claims.

In the annexed drawings: Figure 1 is a top plan-view of the principal part of a gumming machine, constructed'in accordance with my invention; Fig. 2 is a front end elevation; Fig. 3 is a transverse vertical section; Fig. 4

ferred construction, in which is rotatabl mounted a glue distributing roll 2, said r0 1' being mounted upon a shaft 2, the ends of which are journaled in Vertically adjustable bearing plates 3, said plates being adjustable by means of thumb-screws 4, passing through threaded apertures in lugs 5, extending from the sides of the tank, all as clearly shown and described in the Letters Patent granted to me on the 28th day of April, 1903, N 0. 726,473.

Journaled in suitable bearings formed in the vertical side plates 6 extending upward from the opposite sides of the tank 1, is a glue applyin roller 7 of novel construction, resent y to be described in detail, said roller sing in surface contact with the glue distributing roll 2. Also journaled in open bearings in the side plates 6, is a resser roller 8, said roller being arranged irectly above and always maintained out of contact with the glue-applying roller 7. As will be seen by referring to the drawings, the presser roller 8 is mounted in open bearings so that the same maybe readily removed and replaced when desired.

The means for rotating the glue distrib uting roll 2, the glue-ap )lying roller 7, and the resser-roller 8, W11 now be described. Loosely mounted upon a pin 9 fixed to one of the side plates '6, is a rotatable sleeve 10,

- carrying a pinion 12 and a clutch member 13.

Also loosely mounted for rotationon the pin 9, is a longitudinally movable sleeve 14 having fixed thereto apulley 15, which may be driven from any suitable source of power. A clutch lever 16 pivoted at 17 to a bracket extending; outward from one of the side plates 6, has its lower end 18 in engagement.

with a roove in the sleeve 14, andis so eonstructe' that the sleeve 14 may be shifted longitudinally on the in 9, so as to bring the clutch face 19 on sai engagement with the clutch 13 on the sleeve 10, whereby the pinion 12 may be rotated or stopped, as'desired. Fixed to one end of the shaft carrying the roll 7 is a gear wheel 20, which is in-mesh with the pinion 12 on the sleeve 10, and secured to the opposite end of the shaft of the glue appllyin roller 7. is a pinion 21, which is in mes wit agear wheel 22 mounted on the shaft2 of the glue dis tributing roll. Mounted on the shaft 23 of the resser roller 8 is a pinion 24, which is in mes with the car 20. By the gearing described, it will be seen that when the clutch lyi han and the bottom blan sleevein-to or out of nuts 30.

faces 13 and 19 are in engagement, the )inion 12 will cause rotation of the glue distril iu ting roll 2, the glue-a plying roller 7, and the )resser roll 8, in t e direction of the arrows indicated in Fig. 3. A suitable table 25 for the blanks to be gummed may be employed, such a table being shown in Fig. 3 of the drawing.

In coating blanks or separate sheets with a machine of the typeherein described, the custom is to feed a number of superposed blanks through the machine at once, or a single blank with a suifieiently stifl backing. These blanks are passed between the glue app ng roller 7 and the resser roller 8 by receives its coating of glue from the glue applying roller, the presser roller acting to impart sul'licient pres sure to the package of blanks or to the single blank and its backing, in order that a smooth and even ap lication of the adhesive may be obtained. it will be a parent that unless some means is provide to prevent it, the blank being gummed will adhere to the gluea plying roller and wrap about-the same, w rich would render the machine totally ino erative for the pur ose intended. One of t e salient features, t erefore, of the present invention, is the provision of means to pre vent the blank being gummed, from adhering to the glue applying roller, as set forth, and this means comprises a novel construction and arrangement of strippers now to be described. Extending transversely across the front of the machine and parallel with the. glue-applying roller 7, is a plate or bar26, rovided with a plurality of pins 27. A siml ar plate or bar 28 extends transversely of the machine in rear of the glue applying roller 7. In this plate 28, and in alinement with each of the pins 27 in the plate 26, are the screws 29,

each provided with a lock nut 30. Attached to each pair of pins 27 and screws29, is a relatively narrow stripper, strand, or wire 31, there being a plurahty of these. strands or wires which extend on opposite sides and across the upper face, of the glue applying roller 7, the wires being spaced apart asuitable distance to meet proper requirements. It will be apparent that by roperly turning the screws 29, the individua strands or wires 31 may be brou ht to proper tension and afterward secured taut'by means of the lock The glue applying roller 7 is preferably, but not necessarlly, composed of some suitable compressible or elastic materiah-such as rubber, and is rovided with a plurality of circumferential y arranged, peripheral ways or grooves '32, the diameter of the grooves being'substantially the same as the width of the stripper Wires or strands 31, as clearly shown in the enlarged sectional view, Fig. 5. In other words, the stripper strands or wires This latter construction has the advantage substantially fill the grooves in the roller 7,

at the point where they cross the latter. By

this arrangement it willbe apparent that as the Wires or strands are very narrow, and-as these elements substantially fillthe peripheral grooves 32, a smooth and unbroken surface will be rovided at the point on the glue applying ro ler opposite the resser roller, and from which the blank receives its suppl of glue, so that in operation the blankwil receive a continuous coating of glue, as distinguished from a striped coating, which would be the case if the strands or wires were wilrller than the grooves in the glue applying ro er.

While I prefer to provide the glue applying roller with circumferential grooves as shown and dcscriberLI have found that fairly good results may be obtained by dispensing with such grooves, especially where the glue applying roller 7 is made of rubber or some other elastic or compressible material, it being apparent in this case, that the stripper wires or strands will be pressed down into the surface of the said roller whenever a package of blanks is passed through the machine,

this being possible owing to the fact that the stripper strands or wires are relatively fine or narrow.

In Figs. 6 and 7 I have shown a slightly modified form of stri per. In these figures the reference numera '33 designates a cross plate corresponding to the plate 26 of the other construction, and the numeral 34 designates a plate corresponding to the plate 28, of the construction before described. Projecting upward from the plate 33, is a series of pins 35, one for each stripper, and extending upward from the plate 341s a series of screws 36, each having a threaded engagement with the plate 34, and each provided with a locknut 37. In this instance, the stripper consists of a very thin steel strap 38, which is provided at one end with a loop through which one of the pins 35 extends its other end being passed through an-elongated slot in one of the screws 36. Obviously, by turning the screw 36, the strap 38 may be drawn taut and held so by the lock nut 37 When employing the steel strap construction as described, the glue applying roller will be provided with narrow peripheral grooves of sufficient width only to receive the same.

over the fine wire construction of being stronger and having more lasting ualities.

I am aware that it is not broailly new to rovide a machine for gluing blanks, wherein 1s employed a peripherally grooved'glue aplying roller with stripper rods extending into the said grooves to prevent the blanks from adhering to and wrapping about the said roller. In the known constructions, however, the said peripheral grooves are relatively wide, as compared to the width of the stripper rods, and the blank being gummed therefore does not receive a continuous or unbroken coating of adhcsive,but to the contrary, is coated in stripes. The present. invention is clearly distinguished from the said prior devices in that the stripper wires or strands are of a width substantially equal to the grooves and the upper surface thereof is.

preferably flush with t 1e upper surface of the roller at a point where the strands or wires enter the grooves, so that a continuous surface is provided where the roller transmits its glue to the blank.

While I have shown and described the glue-applying roller as receiving its supply of glue from a distributing roll rotatablymounted in the glue tank, I do not wish to be understood as limiting myself to this specific manner of applying the glue to the said roller. Qbviously, the glue applying roller may receive its coating of glue otherwise, without de arting from the spirit of the invention as eiined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a machine of the character described, a glue applying roller of elastic or compressible material,-means for applying glue to said roller, a plurality of strippers of fine gage arranged above and transverse to the axis of said glue applying roller, and a pressure roll located above and normally out of contact with said strip ers, the construction and arrangement of parts being such that the strippers will be caused to be embedded in the glue applying roller when pressure is exerted thereon by the passage of blanks through the machine.

2. In a machine. of the character described, a glue tank, a glue applying roller of elastic or com ressible material rotatably mounted in sai tank, a pressure roll located above and normally out of contact with the glue applying roller, and a plurality of tensioned strip er wires of fine gage arranged between ancFextending transverse to the axis of said roller and roll, said stripper wires being adapted to be embedded in the glue aplying roller at the point where they cross the latter when pressure is a plied thereto by the action of the pressure roll upon the blanks as they are passed through the machine.

3. In a machine of the character described, a glue tank, a glue roll rotatably mounted therein, a glue a plying roller in surface contact with said roll, a presser roller located above and out of contact with the glue applying roller, a plurality of stripper wires or strands arranged above and transversely to the axis of said glue a plying roller, and means for tensioning t c said stripper wires or strands.

4. In a machine of the character described, a glue applying roller having a plurality of 'circumferentially' arranged peripheral grooves, and strippers arranged transversely to the axis of the roller, saitI strippers being arranged in line with and substantially filling the grooves of the roller at the pointwhere they cross the. latter. y i I 5. In a machine ofthe character described,

a glue applying roller having a plurality of circumferentially arranged peripheral m grooves, and strippers arranged transversely to the axis of the roller and extending on opposite sides thereof,said strip ers being ar ranged within and substantla ly filling the grooves of the roller. s

6. In a machine of the character described,

a glue applying roller of elastic material having a plurality of cigcumfcrentlally arranged peripheral grooves, and a plurality of relatively fine stripper wires or strands arranged so transversely to the axis of said roller and extending on opposite sides thereof, said wires or strands lym in the plane of the grooves and substantia 1y 'filling the latter at the point where they cross the-roller.

z 5 7. In 'a machine-of the character described,

a gluetank, a glue distributing roll rotatably mounted th rein, a glue applying roller of elastic'material arran tactwith the sai distributin roll, said roller being provided with a plura ity of circ'um- 'ferentially arranged peripheral grooves, a plurality ofrelatlvely narrow strippers. ar-v ranged transversely to the axis of the said rollerand extending onopposite sides'therer of, saidstrippers belngembedded in and filling the grooves at the point where they cross the roller, and a presser roller located aboye and out-of contact with the said glue applying roller. n

' 8. In amachine'of the character described, a glue tank a glue distributin roll rotatably mounted therein, a glue app ying roller of elastic material arranged above and in. surface' contact with the .said distributing roll,

5 said roller being provided with a plurality of circumferentially arranged peripheral grooves, a plurality of relatively narrow strippers arranged transversely to the axis of the said roller and extending on opposite 5'- sides thereof, said strippers being embedded in andfilling the grooves at the point where they cross the roller, means for adjusting the tension of the strippers, and a presser roller located above and out of contact with the said glue applyingroller.

In a machine for applying glue to blanks, a glue tank, a glue distributing roll rotatably mounted in said tank, a glue ap lying roller in surface contact Wibh said rol 6o presser roller located above and out of contact with the glue applying roller, a plurality of stripper wires or sirands arranged above and transversely to the axis 'of the said glue applying roller, fixed su ports on opposite sides of the last-named ro ler,and adjustable ed above and 111 surface con com rising from.

means carried by said supports for retaining and, individually adjusting the said strippers. 10. Inamac ine for coating one surface of sheet material or a blank made therefrom with an adhesive comprising means for applying an unbroken fi m of the adhesive to one surface of a moving sheet or blank dur ing its movement in means embedded in the adhesive-appl in means for supporting the sheet 'or blim while movin and separating or stripping it from the ad esive-applying means after it has received the adhesive coating.

11. A machine for coating one surface of sheet material or aeblank made therefrom, comprising an adhesive-applying roll having .parallel circumferential ways therein, a feed roll, and transversely-arranged wires passed between the rolls from front to rear and through the ways and flush with the surface of the adhesive-ap lying roll.

12. A machine or coating one surface of sheet material or a blank made therefrom, comprising an elastic adhesive applying roll having parallel circumferential ways therein, a feed roll, and supports for the sheet or blank extending from front to rear between the rolls, through the ways and below the one direction, and

bite ofthe adhesive-applying and feed rolls.

13. A machine for coating one surface of sheet material or a'blank made therefrom,

an adhesive applying roll havin para lel circumferential ways therein, a fee roll, and transversely between the rolls from front to rear through the ways in the adhesive a plying roll to form a su port for the blank moving from between the rolls after the adhesive is aplied and to support or strip the sheet or iilank from the adhesive applying roll.

14. A machine for coating one surface of sheet material or a blank made therefrom with an adhesive, com rising a single elastic adhesive-applying r01 1 having peripheral ways therein, horizontal wire supports for the sheet or blank embedded'in the ways the sides of which close tightly about the Wire supports, and bars on opposite sides of the adhesive-app] ing roll to which the ends of the wires are astened.

15. A machine for coatin one surface of a blank of'sheet material w1th an adh sive, comprising a single elastic adhesive-applying roll having peripheral ways therein, and horizontal wire supports for the blank emarranged wires passed beddedin the ways, the sides of which close tightly about the wire supports.

16. In a machine for applying an unbroken pellicle of adhesive material to one surface of a sheet or blank, comprising a single adhesive-applying roll of elastic or compressible material, and stationary means embedded in andclosely embraced by the material of the roll, for stripping the coated blank there- 17 In a machine for applying an unbroken In testimony whereof I have hereunto set pellicle of adhesive material to one surface of my hand in presence of two subscribing wit- IO a sheet or blank, com rising a single adhenesses. sive-applying roll of e astic or com ressible I PHILIP S SMITH material, and stationary Wires of ne gage embedded in and closely embraced by the Witnesses: material of the roll, for stripping the coated GEORGE K. IIELBER'I, blank therefrom. W. H. RIOE.

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