US726473A

US726473A - Machine for gluing blanks.

Info

Publication number: US726473A
Application number: US13617902A
Authority: US
Inventors: Philip S Smith
Original assignee: HARRY B SMITH; STOGDELL STOKES J
Current assignee: J STOGDELL STOKES; HARRY B SMITH; STOGDELL STOKES J
Priority date: 1902-12-22
Filing date: 1902-12-22
Publication date: 1903-04-28
Anticipated expiration: 1920-04-28

Description

No. 726,473. PATENTED APR. 28, 1903.

P. S. SMITH.

MACHINE FOR GLUING BLANKS.

APPLICATION FILED DEC. 22, 1902.

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i I i g g i x E 1 l\ a H i i l l| i j i j l I i No. 726,473. PATENTED APR. 28, 1903. P. S. SMITH.

MACHINE FOR GLUING BLANKS.

APPLICATION FILED D50. 22, 1902.

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APPLICATION FILED DEC. 22, 1902.

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PHILIP S. SMITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF THREE-FOURTHS TO J. STOGDELL STOKES, OF MOORESTOWVN, NEWV JERSEY, HARRY B. SMITH, OF BROOKLYN, NEW YORK, AND WIN- FIELD SCOTT SMITH, OF PAIVTUOKET, RHODE ISLAND.

MACHINE FOR GLUlNG BLANKS.

SPECIFICATION forming part of Letters Patent No. 7 26,473, dated April 28, 1903.

Application filed December 22, 1902. Serial No. 136,179. (No model- To aZZ whom it may concern;

Be it known. that I, PHILIP S. SMITH, a citi-. zen of the United States, residing at Philadelphia, in the State of Pennsylvania, have invented new and useful Improvements in Machines for Gluing Blanks, of which thefollowing is a specification.

In manufacturing paper boxes having an applied covering generally a sheet of relatively thin paper) the practice in general use is to form the box and then apply a blank formed of a sheet of thin paper to the surface of the formed box, one surface of the blank being coated with glue before application to the box. In order that the covered box should be smooth and free from blisters, 00., it is essential that the entire surface of the blank receive the glue 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 to several causes, among which is the fact that the material of the blank is of such a nature 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, &c., especially when the application is. by bringing the surface into contact with a glue-carrying roller, the application of glue to the surface of the blank is generally performed manually. The application of glue to the surface of the blank manually is not only a slow and tedious operation, but it has been found that the coating is unevenly distributed. Hence it is not possible to form uniformly-coated blanks in this manner. By providing a machine which will apply the coating of glue to the blank rapidly and uniformly throughout the entire surface of the blank a great saving of time and expense in t the manufacture of the box Will be had, thereby decreasing the relative cost of the completed box.

This invention therefore relates to improvements in machines for applying a coating of glue to the entire, surface of one face of a blank, and has for its object to provide a construction in which a moving blank is brought into contact successively with a pair of glue-applying rollers, each of which applies the coating to a portion of the surface, the blank being held from curling, &c., during its passage from one roller to the other.

A further object is to provide a structure of the character described which willapply a coating of glue throughout one face of a blank with rapidity and uniformity.

A further object is to provide a machine of this character which is simple and efficient in operation, durable in construction, and which can be made at a moderate cost.

To these and other ends said invention consists, generally and briefly stated, in the provision of a machine of the character specified comprising means for successively striping a moving blank with the coating material during its movement in one direction, the totality of stripes covering the entire surface of the blank; further, amachine of the character specified comprising means for successively applying spaced stripes of the coating material toa moving blank during the movement of the blank in one direction, the totality of stripes covering the entire surface; further, a machine of the character specified comprising two members each provided with spaced material-applying faces, said members beingpositioned relative to each other tosuccesslvely stripe a moving blank with the coating material during the movement of the blank in one direction, the totality of stripes covering the entire surface; further, in a gluing-machine, a pair of rollers having spaced glue-applying faces, the faces of one roller being out of line with the faces of the other roller.

It further consists in the improved construction and combination of parts hereinafter fully described, illustrated in the accompanying drawings, in which similarnumerals of reference indicate similar parts in all of the figures, and particularly pointed out in the appended claims.

In the drawings, Figure l is an end elevation of the machine looking toward the right in Fig. 2, the feed-table being omitted. Fig.

2 is a central vertical longitudinal sectional view of the machine. Fig. 3 is a plan view showing the pair of glue-applying rollers and the supporting strips or fingers for the blank. Fig. 4 is a View showing the arrangement of gearing at one side of the machine. Fig. 5 is a similar view showing the gearing at the opposite side of the machine. Fig. 6 is a detail view of one of the feed-roller bearings. Fig. 7 is a detail view showing one of the slidable bearings for a glue-applying roller.

In the accompanying drawings the reference-numeral 5 designates a glue-tank of any preferred construction, supported in suitable manner, such as by legs 6. The tank and its contents are kept heated in any suitable manner-such, for instance, as by a steam-space 7 below the tank, having inlet and outlet openings 8 and 9, as shown. Mounted on the sides of the tank 5 are two standards 10 10, which carrysubstantially all of the operating parts of the machine.

11 designates an intermediate roll, preferably rubber-faced, as shown in Fig. 2, mounted in the standards 10, each end of the shaft of said roll projecting beyond the standards, said ends each carrying gear-wheels, (designated as 12 and 13,) the gear 12 having an operative contact with the drive gear 14 and the gear-wheel 13 being operatively engaged with a gear 15 on the shaft of the feedroll, as hereinafter described. The driveshaft 16, carrying the drive-gear 14, extends from one of the standards 10 and is provided on one face with a clutch mechanism 17, the other face of said mechanism being carried by a drive-pulley 18, loosely mounted on said shaft, said clutch mechanism being operated by a suitable handle 19.

2O designates the glue-feeding roller, which isjournaledinbearings21. (Bestshownin Fig. 6.) As shown, said bearings each have at one end a hook-shaped portion 22, adapted to be placed over a pin 23, carried by each standard, the opposite end of the bearing having an elongated portion which normally rests on the upper end of an adjusting-screw 24, mounted in a projection 25, formed on the tank 5, the mounting being such as to permit the roller extending into the glue in the tank. This construction permits the gluefeeding roller to be readily placed in position or removed therefrom by moving the screw 24 downward sufficiently to permit the hookshaped ends of the hearings to be placed on or taken from the pins 25 and then moving the screw 24 upwardly until the proper degree of contact is obtained between the roll 11 and roller 20, this degree of contact being regulated by the movement vertically of the screw 24 in an obvious manner. The screw 24 is held in its adjusted position in any suitable manner, such as by the set-screw 26.

As will be seen, the gears 13 and 15 differ in size, thereby causing the roller 20 to have a relatively slow movement, so that the surface contact of the roll 11 and roller 20 is not merely a rolling one, but what might be termed a rubbing action is produced, by means of which the glue is evenly spread over the surface of the roll 11.

On opposite edges each standard 10 is cut away, as at 27, to receive a slidable bearingblock 28, forming the journal for one end of the glue-applying rollers 29. The bearingblocks are normally pressed outward away from the roll 11 by means of springs 28, and contact between each roller 29 and intermediate roll 11 is effected in an adjustable manner by a set-screw 30, passing through a block 31, carried by the standard.

As shown, each roller 29 is formed with spaced or separated glue-applying faces, each of which has its edges cut away or rounded off to a slight degree. In forming the roller 29 the whole may be formed integrally, or, if desired, the same may be built up, the latter being an obvious structure, and hence not shown specifically. The two rollers 29, forming a pair, are located in horizontal alinement; but the glue-applying faces are out of alinement-that is to say, the faces of one roller are opposite the spaces of the other rollerthe arrangement being such, however, that the opposing faces overlay to a slight degree, the relative widths of the faces and adjacent spaces permitting such overlapping. The shafts of the rollers 29 extend through the bearing-blocks 28 and carry gears 32 32 33 33, the former having an operative connection with the gear 12, from which said rollers are driven, and the gears 33 33 having an operative connection with the gears of the feed-rolls, hereinafter described. As each roller 29 has its glue-applying faces in contact with the intermediate roll, it will be obvious that the operation of the machine will cause said faces to take up the glue from said intermediate roll in an evenlydistributed form.

34 designates a removable supporting device for the blanks consisting of two rods 35, extending parallel with and outside of the rollers 29, being mounted on the blocks 31, and an intermediate rod 36, the latter being supported from the rods 35 by the supporting strips or fingers 37, the latter being of two forms, those shown on the left in Fig. 2 extending to a point beyond the vertical plane of the rod 36 being bent backward and secured in said rod, while those on the right lead from the rod 36 to the rod 35 on the right. Those strips on the right in said Fig. 2 are on a slightly lower plane than the strips on the left in order that no projecting portion may catch the blank as it passes from one roller to the other. The strips 37 extend through the spaces formed between the glue-applying faces of the rollers 29, thereby permitting the blank to receive the glue from the rollers 29 and without carrying the blank but slightly out of the plane on which it is located when in contact with the glue-applying faces. .It will therefore be understood that any tendency of the blank to be carried around the roller 29 is immediately stopped by the conaided in a substantial manner by the construction of the rollers 29 in that the blank when passing over the first roller is coated in strips only, blank spaces being formed between the stripes, which spaces are coated by the second roller The upper ends of the standards 10 are provided with open-ended slots or bearings 40, within which are removably located the feedrolls 4:1 41, said rolls being in vertical alinement with the rollers 29, the shafts of said rolls having gears 42, operatively engaged with the gears 33. The recesses 40 are of a depth to permit the rolls 41 passing downward to a point closely adjacent to the surface of the roller 29; but they prevent actual contact being formed between said parts. The recesses, however, permit said rolls to be raised, (the gears connecting the rolls and rollers 29 being formedto permit of a free movement of the feed-rolls without disengagement.)

45 designates a table of suitable formation and supported in suitable manner, such as by a removable connection with the stand ards and glue-tank, as shown. Preferably a support .8 for the blank extends from the table to the fingers 37.

In operating the machine the operator preferably uses a pile of blanks (ranging from ten to fifty, more or less, according to the thickness of the blank) with the faces to be coated placed downward, the blanks being alined, and, if desired, placing a heavier piece of material on the topof the pile. This pile or batch is first moved from the table onto the projecting portions of the fingers 37 and onto the first roller 29, with the spaced faces of which the lowermost blank contacts. As the batch is carried forward the first feed-roll adjusts its position according to the thickness of the batch and a positive feed of the batch as an entirety is had. During the passage of the batch over the first roller 29 the coating is applied in parallel stripes throughout the length of the blank, (if fed in lengthwise,) leaving uncoated stripes. As the batch passes from the first roller 29 the striped blank of the batch contacts with the strips or fingers 37, the continued feeding causing the batch to pass along said fingers (which serve the purpose of a table) until brought into contact with the second roller 29, Where the same operation is bad, the glue-applying faces of this roller, however, acting on the surface which was uncoated, the overlapping of the faces of the two rolls insuring that the entire surface of the blank is coated. In other words, the moving blank is successively striped While moving in one direction, the totality of stripes covering the entire surface.

After passing the second roller 29 the operator removes the bottom or coated blank, and the batch is brought back on the table ready for passage through the machine to coat the next blank.

It will be understood that the term blank as used herein includes any material having a surface to be coated on one side and of a predetermined size.

The beveling or rounding off of the peripheral edges of the glue-applying rollers is very important, as by this construction the blank is not marked, out, or indented, which would otherwise likely be the case and which would materially detract from the general appearance of the finished box.

By referring to Fig. l of the drawings it will be seen that the roll 11 is longer than the roller 20 and that the said roller 20 is like-- wise slightly longer than the glue-applying rollers 29. This is important, since it was found in practice that a furrow or rib of glue would form on the roll 11 at the ends of the glue-feeding roller 20, which rib or furrow of glue would be taken up by the glue-applying rollers 29, at least to such an extent as give an overfeeding of glue to the blank, at the edges thereof, which is not only undesirable, but very objectionable. I have overcome the above objection by so constructing the relative lengths of the rolls that should the rib of glue form on the roll 11 it will be so far removed from the ends of the glue-applying rollers 29 as to be out of contact or alinement therewith. In this mannerlsecure a uniform distribution of glue over the entire blank.

Having thus described my invention, what I claim isl. A machine for completely coating one surface of a blank with adhesive comprising means for successively striping a moving blank with the coating material at one operation during its movement in one direction, the totality of stripes covering the entire su rface.

2. A machine for completely coating one surface of a blank with adhesive, comprising means for successively applying at one operation spaced stripes of the coating material to a moving blank during the movement of the blank in one direction, the totality of stripes covering the entire surface.

3. A machine for completely coating one surface of a blank with adhesive, comprising means for successively applying at one operation parallel spaced stripes of the coating material to a moving blank during the movement of the blank in one direction, the totality of stripes covering the entire surface.

4. A machine for completely coating one surface of a blank with adhesive, comprising two members each provided with spaced material-applying faces, said members being positioned relative to each other to successively stripe a moving blank with the coating material at one operation during the movement of the blank in one direction, the totality of stripes covering the entire surface.

5. A machine for completely coating one surface of a blank,'comprising a pair of rollers parallel with each other and each provided with spaced material-applying faces, said rollers being in horizontal alinement, and positioned relative to each other to successively stripe a moving blank with the coating material during the movement of the blank in one direction, the totality of stripes covering the entire surface.

6. In a gluing-machine, a pair of rollers, each having spaced glue-applying faces, the faces of one roller being out of line with the faces of the other roller.

7. Inagluing-machine,apairof rollers each having spaced glue-applying faces, the operating faces of one roller opposing the spaces of the other roller.

8. In a gluing-machine, a pair of glue-applying rollers, one constructed to apply glue over a portion of a sheet on one face thereof only and the other constructed to apply glue over the remaining portion of the same side of the sheet between the portions not acted upon by the first-named roller, and means for applying glue to the surfaces of said rollers.

9. A machine for completely coating one surface of a blank with adhesive, comprising means for applying spaced stripes of the adhesive to a moving blank,and means arranged out of line with the first-named means for applying additional stripes to the same side of the blank over the portions not acted upon by said first named means, both of said means acting to coat the entire surface of the blank at one operation during its movemen in one direction.

10. In a gluing-machine, a plurality ofrollers each having spaced glue-applying faces, and separated supporting-strips for the blank to be glued arranged between and extending beyond the periphery of said rollers.

11. In a gluing-machine, the combination with a glue-tank, of a glue-feeding roller mounted therein, a pair of glue-applyingrollers mounted in parallel alinement above and in surface contact with the glue-feeding roller, and each having spaced glue-applying faces, and a feed-roller arranged above and out of contact with each glue-applying roller.

12. In a gluing-machine, a glue-tank, a glue-feeding roller mounted therein, lue-applying rollers, and an intermediate roll having surface contactwith said glue-feeding and glue-applying rollers, said roll and gluefeeding roller having movements in the same direction, the peripheral surfaces thereof moving at different speeds, whereby a rubbing action will be had at the line of contact of said roll and roller.

13. In agluing-machine,glue-applying rollers having spaced glue-applying faces, the edges of said faces being cut away.

14. In a gluing-machine,glue-applying rollers having spaced glue-applying faces, the edges of said faces being rounded off.

15. In a gluing-machine, the combination with standards, of two glue-applying rollers removably mounted therein in substantial horizontal alinement, said rollers having spaced glue-applying faces, supporting-strips for the blank removably carried by said standards and extending between the spaces of said rollers, and means for feeding glue to said rollers.

16. In a gluing-machine, a glue-tank, a glue-feeding roller extending therein, a pair of glueapplying rollers, an intermediate rollbetween said glue-feeding and glue-applying rollers, said rollers being adjustable relative to the surface of said roll, and means for feeding the blank to said glue-applying rollers successively.

17. The combination with a glue-tank carrying adjusting-screws,and standards mounted on said tank, each standard havinga pin; of bearing-blocks having one end removably seated on said pins, the opposite ends of the blocks resting on said screws, whereby said blocks may be adjusted pivotally; and a gluefeeding roller mounted in said blocks.

-18. In a gluing-machine, the combination with a glue-tank, of a glue-roll mounted therein, a pair of glue-applying rollers mounted in parallel alinement and insurface contact with the glue-roll,and each having spaced glue-applying faces, a feed-roller arranged above and out of contact with the glue-roll, and a glue-feeding roller in surface contact with said glue-roll, said roll being shorter in length than the glue-feeding roller and longer than the glue-applying rollers, substantially as and for the purpose specified.

19. In a gluing-machine, a glue-tank, a glue-feeding roller extending therein, a pair of glue-applying rollers, an intermediate roll between said glue-feeding and glue-applying rollers, slidable spring-pressed bearings for said rollers and means for adjusting said bearings with their rollers relative to the surface of said roll.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

PHILIP S. SMITH. Witnesses:

WALTER F. HENRY, A. J. FLowERs.