US765149A - Paper-bag machine. - Google Patents

Description

' PATBNTED JULY 12 1904. No. 765,149 Jl PETRIG.

PAPER BAG MACHINE.

APPLICATION FILED 00T.1B. 1902.

2 SHEETS-SHEET 1.

No Homin Il', f

PATENTED JULY 12 1904.

No '765,149 J. PETRIG.

PAPER BAG MACHINE.

APPLIOATIoN HLBD ocmw. 1902. l, No MODEL. 2 sums-snm a.

UNITED STAT-Es Patented July 12, 1904.

PATENT OFFICE.

JOSEF PEIRIC, OF LAIBACH, AUSTRIA-HUNGARY, ASSIGNOR ,.IO EMERIOH C. MAYER, OF GRATZ, AUSTRIA-HUNGARY.

PAPER-:BAG MACHINE.

SPECIFICATION forming partr of .Letters Patent No.765,149,dated July 12, 1904.

Application filed October 18, 1902. Serial No. 127,852. '(No model.)

gary, have invented certain` new andusefulk Improvements in Paper-Bag Machines; and I do hereby declare the following to be afull, clear, and exact description of .the invention,

such as will enable others skilled in ythezart to which it appertains to makeand use .the same.

My invention relates to paperfbagmachines of the kind in which the doubled paper blanks, having a projecting folding lap, are by two endless carrier'- belts moving in thev same direction and carried consecutively over apasting device, through a folding device for turn-l ing downA the lap, and, finally, between two presser-rolls, which press the folded lap upon the pasted side of the body of the bag. y'

The object of my invention isanimproved device for applying the paste.

In the annexed drawings a paper-bag machine fitted with my improved pastingdevice is shown, of which.-

Figure 1 is a front elevation, partly in section, on line C D of Fig. 2. Fig. 2 is a plan view of the machine. Fig. 3 .is a sectional view of the machine on lines A B and F G of Fig. l. Fig. 4 is a section, on anenlarged scale, on line P Q of Fig. 2. Fig. 5` shows the folding device in plan view; and Figs. 6, 7 and 8 are sections thereof on lines H J K L, and M N, respectively, of Fig. 5.

In all the figures corresponding letters of reference indicate like parts.

The doubled paper blanks m, which are placed upon the table I), are folded. in such manner that their upper part projects beyond,

the lower part by the width of the lap n, which is to'be folded back and pasted upon the lower part of the blank. These doubled blanks are by hand fed between the two endless carrier belts or bands a c, so that the lap n and that portion ofthe other part of the blank to 'which said lap is to be pasted stand clear of or remain .uncovered by the carrier-belts. The 'doubled blanks are carried over a pasting device which applies paste to that portion of 'a .and .folds it vagainst the ,pasted ..portion,

and, finally, they pass A.between two presserrolls cl c, by which thelap n is pressed tightly againstthe. pasted Jparttof the blank. The tubes thus formedaredeliveredon a table ci, to be .after-ward closed onone end in the same ror any; other s uitablemanner.

; The machine isfbypreference constructed symmetrically, so .thatithas a carrier, paster, folder, and presserat eithery Side.'

. The device ,for applying paste to that portionof thelovver surfaceof the narrower part off the blank to which thelap n is ,to `be pasted and which forms the object of my present invention essentially. consists` of ay cylinder f for containing thepaste.. Iin which a piston g may bemoved with uniform velocity.

' Motion .is imparted to the piston g by a screw-.threaded rod L, rotatably connected to the .piston g', which rod works in a correspondingly-.threadednut composed vof the two halves ,1c c. lEach of these two halves is attached to a lswinging arm Z, and the free ends of .these arms ,Z l carry a grip c', having a nut j, by `meansof which. the two halves of the nut may be held in .working contact with the thread of the rod L. The rod {L receives its rectilinear motion from a worin-wheel p, movably connected `therewith and j'ournaled in the casingy. Into this worm-wheelv p gears an endless screw c', keyed fast Ato the shaft q, which. is rotated fromthe driver-shaft s of the carrier-belts c @by means of two conical pulleys and a belt, as shown. f

. The paste, is appliedto the under side of the bag-blank by a disk w, overt the upper part of the periphery of which the paper blanks are carried. The disk w is inclosed by acasing c, which forms a knee with the cylinder f and in which the shaft c of the disk fw is journaled. One end of the casing o is closed by a cover c, through which passes the shaft a, and the aperture is closed by a stuffing-box, as shown in Fig. 4 of the drawings. The shaft c receives its movement by a belt from the Y drawn back by hand.

driving-shaft of the carriers t a, as shown in Fig. 2. casing c that 1t bears with one surface against the inner side of the cover e, with the other surface against a web u in the casing fu, which covers about half of this surface of the disk, and with its periphery against the inner periphery of the casing, so that when rotated it will be in frictional contact with these parts. The disk w is provided with a number of perforations m for taking up and carrying along the paste contained in the casing o. In the top part of the casing U there is an open space between the cover e and the flange or web u of the casing/U, through which protrudes a small part of the periphery of the disk w. Owing to the circumstance that the greater part of the sides and the peripherjT of the disk w is inclosed by and in frictional contact with the rigid surfaces of the casing e, only a small part of the disk projecting therefrom, the paste taken upon by the disk is not only ground up very finely, but is also heated, and is by the projecting part of the disk applied to the paper in a finely-distributed and heated state as the blanks are passed over the disk. The casing c is attached to th'e cylinder f by a bayonet-joint, so that the two parts can easily be separated from each other when the cylinder is to be filled with paste.

For refilling the cylinder the nut vi is loosened and the swinging' arms l with the nuthalves are opened, whereupon the piston is The bayonet-joint connecting the cylinder with the casing o being openedthe former may be turned to the right and fresh paste be introduced behind the piston. To avoid this manipulation, the casing o may be provided with an aperture z5, which when the. cylinder is empty may be connected with a paste-reservoir, from which the paste will enter the cylinder by suction as the piston'isdrawn back, whereupon the aperture t may be closed again by a suitable plug' or cap. Havingnow described my invention, what I claim, and wish to protect by Letters Patent, isi f j l. In paper-bag machines the combination with a carrier and a folder, of a receptacle in which the paste`; is under pressure, having a web therein, a cover to said receptacle, a reciprocating piston, a disk rotating in said receptacle at right angles to the piston between frictionsurfaces formed by said web and cover and having a portion of its periphery rIhe paste-disk w is so placed in thel projecting from said receptacle, and of means for rotating the disk.

2. In paper-bag machines the combination with a carrier and a folder of a paste-receptacle, having a web therein, a cover for said receptacle, of a perforated disk rotating in this receptacle between friction-surfaces formed by said web and cover and having a portion of its periphery projecting from said receptacle, of means for rotating the disk, of a cylinder connected with said receptacle, and eX- tending at right angles thereto, a piston working in said cylinder, and means for imparting rectilinear motion to said piston.

3. In paper-bag machines the combination with carrier and a folder of a paste-receptacle, having a web therein, a cover for said receptacle, a perforated disk rotating in this receptacle between friction-surfaces formed by said web and cover, and having a portion of its periphery projecting from said receptacle means for rotating the disk, a cylinder connected with said receptacle, and extending at right angles thereto, a piston working in said cylinder having a screw-threaded rotatable rod attached thereto, of a stationary adjustable nut adapted to be brought into and out of engagement with the threads of said rod, and of means for rotating this rod, all substantially as and for the purpose set forth.

,4. In a paper-bag machine, the combination with a carrier and a folder, of a paste-receptacle, a cylinder at right angles thereto, a piston in the cylinder, a screw-threaded rod pivotally connected with the piston, a two-part threaded nut in which said rod works, swinging arms carrying said two. parts of the nut, and means carried by the said arms for holding the two parts of the nut in working contact with said rod.

5. In a paper-bag machine, the combination with a carrier and a folder, of a paste-receptacle, a cylinder at right angles thereto, a piston in the cylinder, a screw-threaded rod pivotally connected with thev piston, a two-part threaded nut in which said rod works, swinging arms carrying said two parts of the nut,

'a gripcarried by the free ends of said arms,

and a nut carried by said grip, and means for actuating said threaded rod.

In testimony whereof I afHX my signature. y JOSEF PETRIC.

In presence of- FRIEDRICH BINDER, ALvEsTo S. HoeUE.

IOC

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