1,543,354 June 23, 1925. F. I: ZACHER

FOLDING MACHINE

l .1 Filed June 28, 1924

' Patented June 23, 1925.

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' 1,543,354

PATENT OFFICE. FRED T. ZACHER, OF ST. LOUIS, MISSOURI.

FOLDING MACHINE.

Application ?led June 28, 1924. Serial No. 722,975.

To all whom it may concern: _ Be it known that I, FRED T. ZACHER. a

citizen of the United States, residing at St. Louis. Missouri, have invented a new and useful Folding Machine, of which the follow ing is a speci?cation. This invention relates to improvements in

folding machines. ' -

The invention comprises mechanism for use in a sheet feeding and folding machine whereby, when a sheet ,is folded to form page leaves. the leaves are secured together along the fold lines as an incident .to the operation of the folding mechanism. 1 - Another object of the invention is to pro

vide mechanism of the characterand for the purpose stated in the preceding paragraph, in combination with mechanism for cutting the leaves at their end foldsto permit sepa-v ration of the leaves while said leaves remain adhesively united along their median folded line. -

Another object of the invention is' to pr0~ ., vide mechanism for discharging from the machine the strips cut from the folded sheet so that said. strips will not become mixed

.with the ?nished product. Other objects will appear from the fol

lowing description, reference being made to the drawing in which- -

Fig. 1 is a plan view of a part of a well known sheet feeding and folding machine which I have selected for the purpose of illustrating the embodiment of the present invention.

Fig. 2 is a sectional view on the line 2-2 of Fig. 1. The sheet

' which the present invention is shown is 40

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known as the Cleveland folder, the sheet. feeding mechanism of which is in substantial conformity with the disclosure of Trautman Patent No. 1,413,245, dated April 18. 1922, and the folding mechanism of which is sub stantially disclosed in Olson Patent No.v 1,390,213, dated September 6, 1921. As dis closed in said patents the feeding rollers b and 7) move the sheets from the supporting table 0 to the delivery table comprising angularly positioned horizontal rolls 0?. The feeding rollers b and I) operate upon the sheets in the well known manner; the upper and larger roller 6 engaging and individu ally advancing the topmost sheet to the rolls d. while the lower roller 6 acts upon the edges of the adjacent sheets to retard their

feeding and folding machine in

advance and insure their individual feeding. Both of the rollers 72 and b are operated in ' a counterclockwise directlon as seen 1n Fm. . h 2. [The rolls a? are actuated by the belt (if to move the sheets individually toward the folding mechanism. From the rolls d the sheets pass between the buckling rolls 6 and f and thence to the folding mechanism in cluding a roll 9 cooperating with the roll 7. As is well known machines of the type illus trated are operable to fold a sheet longitudi nally and transversely to provide a plurality of page leaves. Certain of the page leaves are united at their folded ends which makes it necessary to cut said'folded ends to per mit opening or separation of the leaves. My invention comprises mechanism em

bodied in a folding machine for adhesively uniting the page leaves of pamphlets along their median fold lines and for cutting the folded ends of the page leaves to'permit separation thereof. As shown a shaft 1 is supported in advance of the folding mecha nism in bearings 2 and is rotated by a belt 3 engaging a pulley 4 on the shaft 5 of the' roller 6 and a pulley 6 on the shaft 1. _ A disc 7 is attached to the shaft 1 and contacts "with the sheets as they are fed to the folding mechanism by the rolls 0?. The speed of ro tation of the disc 7 is the same as the speed of movement of the sheets, so that the disc 7 neither retards nor accelerates the move ment of the sheets passing to the folding mechanism of the machine. Preferably a

, number of notches 8 are formed in the pe riphery. of the disc 7 to receive and apply to the sheet passing under the disc 9. su?icient quantity of paste to secure the sheet together along the fold line of the leaves forming the pamphlet. A_ paste receptacle 9 has'arms 10 engaging the shaft 1 and is supported in proper relationship to' the disc 7 by a con nection 11 extending to- some stationary part of the machine. A slotted discharge chute 12 extends from the bottom of the receptacle 9 toward the disc 7 and receives the disc 7 in the slot in the end of said. chute. As the disc 7 rotates a part of the paste in the re ceptacle 9 adheres to the periphery of said disc and enters the notches 8 and as the disc rotates the paste is deposited in a straight line upon the sheet passing to the folding mechanism. ' '

The roll 6 is formed with a number of spaced circumferential grooves 13 which per mit the Sheets to pass said roll without the

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line of paste making contact with the roll. The disc 7 may be placed in any one of vari ous selected adjustments on the shaft 1 as required by the. width of the sheets being folded. In any of its adjusted positions the disc 7 is in line with one of the grooves 13. I am aware that the invention may be

varied and that it may be applied to dif ferent types of folding machines. '

I do not restrict myself unessentially in these or otherparticulars, but what I claim and desire to secure by Letters Patent is t

1. In a machine of the character de scribed, the combination with a, lower and an upper buckling roll, the latter of which has a circumferential groove, and devices for feeding sheets between said rolls, of a disc supported above said devices in line with said groove, a receptacle, means for conducting adhesive material from said receptacle to the periphery of said disc, and means for rotating said disc and thereby applying a line of said adhesive material to the sheets in line with said groove.

2. In a machine of the character de scribed, the combination with a lower and an upper buckling roll, the latter of which has a number of circumferential grooves, of ~

1,543,354

a shaft, a disc adjustable on said shaft in line with any selected one of said grooves, means for applying adhesive material to the periphery of said disc, means for rotating said shaft and said disc, and means for feed ing sheets of paper toward said rolls and into contact with said disc whereby a line of adhesive material is applied to each sheet of paper in line with the groove with which said disc alines. - >

3. In a machine of the character de scribed, the combination of a lower and an upper buckling roll. the latter of which has a number of circumferential grooves, a shaft supported parallel with said rolls, a disc adjustable on said shaft in line with any one of said grooves, a receptacle pivotally supported by said shaft, means for conduct ing adhesive material from said shaft to the periphery of said disc, devices for feeding sheets of paper between said rolls, and means for rotating said disc into contact with the paper passing to said rolls and thereby applying a line of adhesive material to the paper in line with the groove with which said disc alines.

FRED T. ZAGHER.

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