US2753836A - Glue tipping machine - Google Patents

Description

July 10, 1956 c. F. FoRsLUND, JR

GLUE TIPPING MACHINE 2 Sheets-Sheet 1 Filed May 19. 1952 m U .d

Julylo, 1956 C, F, FORSLUND, JR 2,753,836

GLUE TIPPING MACHINE Filed May 19, 1952 2 Sheets-Sheet 2 United States Patent GLUE TIPPING MACHINE Charles F. Forslund, Jr., Oakland, Calif., assigner to Bruce Dohrmann, San Francisco, Calif., and Lewis H. Bishop, Menlo Park, Calif.

Application May 19, 19512, Serial No. 288,651

2 Claims. (Cl. 118-3) This invention relates to glue tipping machines and particularly to small portable devices of this kind which are adaptable for use in small printing Shops for use in connection with the preparation of manifold books and snap out carbonized sets.

Manifold booklets and other similar items are customarily formed by collation which, as is well known to those skilled in the art, is the gathering together of a number of various sheets into predetermined combinations for binding. Specically, for example,v successive groups of original sheets, carbon sheets, and second sheets may be grouped to form a book. Other combinations may also be assembled depending upon the use of the completed assembly.

In the past, however, the binding of such sets of collated material has been confined to large size equipment which was impractical for use in small print shops.

It is the object of this invention to provide a glue tipping machine suitable for use in small shops which will require a minimum of experience on the part of the individual operating the machine and which will also require a minimum amount of upkeep and repair.

Other objects and advantages of this invention will appear from the following specification taken in conjunc tion with the accompanying drawings in which:

Figure 1 represents a top plan View of a glue machine incorporating my invention.

Figure 2 is a side elevational View of the glue machine illustrated in Figure l.

Figure 3 is a cross-sectional detail taken along the line 3-3 of Figure l.

As indicated in Figure 1 my device consists of a glue fountain provided with suitable glue heads 11 together with means for the actuating of the glue fountain cornprising a motor 12, a clutch 13, a solenoid control 14 for the clutch and a suitable drive assembly 16 which will more fully hereinafter be described.

The entire assembly is adapted to be mounted upon a base 17 which may be of any suitable size and width. The motor 12 is a conventional electric motor suitably secured to the base 17. The drive shaft from the motor 12 is provided with a suitable clutch 13 which may be of the single revolution type. The clutch 13 is engaged or disengaged by the operation of the lever 18, one end of which is pivotally secured to the clutch 13 in conventional manner, the other end of which is secured by means of a spring 19 to the solenoid 14. When the solenoid 14 is deenergized the clutch 13 will normally be disengaged. However, when the solenoid 14 is energized the lever 18 is swung about its pivot 2li causing engagement of the clutch 13 and driving the shaft 21.

The shaft 21 is mounted in suitable bearings 22 which are mounted upon pillow blocks 23 which in turn are suitably secured to the base 17. The end of the shaft 21 remote from the clutch 13 is provided with a crank 24 which isv secured thereto in some suitable manner as, for example, by means of a slotted keyway and key 25. The crank 24 is provided with a crank pin 26 which is adapted 2,753,836 .Patented July v10, 1956 `ice Y to reciprocate in a slot 27 in lever arm 28. Lever arm 28 is secured to a cross shaft 29 as by means of a slotted keyway and key, not shown, in such amanner that reciprocation of the arm 28 will cause oscillation of the shaft 29.

The shaft 29 is mounted in suitable bearings 30 in vertical side frames 31 and each end of the shaft v29 carry extending arms 32 which are keyed thereto. The outer ends of the arms 32 are pivotally secured to blocks 33. Parallel auxiliary arms 34 are also secured to the side frames 31 and the blocks 33 in such a manner that they, together with the side frames 31, arms 32 and blocks 33 form a parallelogram arrangement whereby the position of the blocks 33 is always vertical.

Blocks 33 support the glue fountain 10. As illustrated particularly in Figure 3 the glue fountain 70 consists of a troughlike member whose lower wall accommodates a plurality of nozzles 11. A suitable cover 36 may be provided. The fountain 10 is supported by a pair of pins 37 which pass through corresponding vertical bores 38 in the blocks 33. A spring 39 upon each of the pins 37 normally holds the fountain assembly in lowered position with respect to the blocks 33. However, when the fountain or the nozzles engage a surface in a manner presently to be explained, the springs 39 and the pins 37 provide lost motion between the fountain and the blocks 33.

As illustrated particularly in Figure 3 the glue heads consist of a nipple 41 which is provided with a small orifice 42 at its lower end. The member 41 is adapted to accommodate a so-called free floating member 43 which acts as a valve closure member and, by gravity, closes the orifice 42 by engaging the side walls thereof. However, it will be noted that the member 43 normally extends downwardly below the lower level of the side walls of the orilice 42. When the member 43 engages another object, as, for example, a sheet of paper, it will be urged upwardly whereby the orifice 42 will be opened and a quantity of glue, which has been stored within the fountain 10 will be deposited through orifice 42 upon the material. When the nozzle member 41 is raised to such a position that the member 43 no longer engages the paper, the member 43 will serve to close the orifice 42.

Energy for the entire device may be furnished from a source of electric current. The switch 46 supplies energy to the motor 12 through conduit 47 and to one side of a foot switch 48 and a switch 49 which are in parallel.

The foot switch 48 and/or the switch 49, being in parallel, can control the supply of energy to the solenoid 14. When the foot switch is used, energy will be supplied only for Such a period of time as the circuit through the foot switch is closed. When the switch 49 is closed energy will be supplied to the solenoid 14 for such period of time as the switch 49 is closed. It is obvious therefore that by using the foot switch 48 or the switch 49 the operation of the clutch may be governed either to permit the same to act as a single rotation clutch or to keep the same engaged for a perdetermined period of time, that is, the period of time for which the switch 49 is closed.

Operation of the device may be brielly described as follows: A quantity of glue is placed within the fountain 10. It will be assumed that the fountain 10 is in elevated position in which position it is customarily retained by the action of the coil spring 44, one end of which engages the side frames 31 and the other end of which engages the lever arm 28 tending to urge the same downwardly.

The valve members 43 will therefore prevent the release of glue through the orifices 42. The switch 46 is then closed supplying electric current through the electric motor 12 and to one side of the foot switch 48 or the switch 49.

An operator then places a sheet of paper or other material generally in the positionv illustrated in Figure 2.

By closing the foot switch 48 or the switch 49 energy Will then be supplied to the solenoid 14 thereby engaging the clutch 13 with the result that a fountain assembly 10 and the member 43 which forms a part of the glue head 11 Will be brought into engagement with the paper deposit ing a number of small quantities of glue on the upper surface of the sheet. The springs 44 will then raise the fountain 10 to normal raised position. Another sheet of paper is then positioned above the first sheet and the operation is repeated. It is apparent that each succeeding sheet placed upon the group of sheets as illustrated in Figure 2 will be glued to that sheet below it.

By closing the switch 49 the operator can cause continual operation, or vertical reciprocation, of the fountain 10 and by properly timing his or her action in placing successive sheets of paper generally in the position illustrated by the sheet of paper in Figure 2, can successfully glue collated material to form various desired assemblies.

I claim:

l. In a glue tipping machine of the character described, a base, a first pair of spaced apart arms movably mounted on said base, a block movably mounted on the outer end of each of said first arms, a second pair of spaced apart arms movably mounted on said blocks and said base parallel to said rst arms, a pin slidably mounted in each of said blocks, a fountain mounted on the lower end of said pins between said spaced apart arms, a plurality of glue applying heads mounted in said fountain, each of said heads comprising a nipple, an orifice in said nipple, and a gravity operated valve member normally closing said orifice, said orifice being opened by external engagement of said valve member, crank means connected to said arms, clutch means connected to said crank means, motor means for driving said clutch means, and means for periodically engaging and disengaging said clutch means.

2. In a glue tipping machine of the type adapted to apply glue dots to sheets of paper, a base, a pair of spaced apart arms pivotally mounted on said base, means connected to said arms for reciprocating the free ends of said arms in an arcuate path about the pivotal connection, a glue fountain, a plurality of glue heads mounted in the bottom of said fountain, each of said glue heads consisting of a nipple having an orifice therein and an axially operable valve member extending through and normally closing said orice and adapted to contact the sheets of paper to be actuated to effect a discharge of glue from the orifice, and parallelogram means pivotally connecting said glue fountain to the free ends of said arms whereby said fountain will be maintained in a vertical position as the arms are reciprocated, said last named means including a lost motion connection to permit relative vertical movement between said fountain and the free ends of said arms.

References Cited in the tile of this patent UNITED STATES PATENTS 1,184,798 Ward May 30, 1916 1,647,072 Bergstein Oct. 25, 1927 2,208,636 Johnson July 23, 1940 2,609,306 Pasotti Sept. 2, 1952 FOREIGN PATENTS 610,216 Germany Nov. 10, 1933

Images