US583523A - Paper-bag machine - Google Patents

Description

(No Model.) 17 Sheets-Sheet 1.

W. WERTS.

PAPER BAG MACHINE. No. 583,523. Patented June 1,1897.

W. W'ERTS.

ER BAG MACHINE No. 583,523. PatentedJune 1,1897.

(No Model.) 17 Sheets-Sheet s.

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PAPER BAG MACHINE, No. 583,523. Patented June 1,1897.

(No Model.) 17 SheetsSheet 4. W. WERTS. PAPER BAG MACHINE.

No. 583,523. Patented June1,1897.

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W. WERTS. PAPER BAG MACHINE.

Patented June 1,1897.

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No. 583,523. Patented June 1, 1897.

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PAPER BAG MACHINE.

No. 583,523. Patented June 1,1897.

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PAPER BAG MACHINE.

No. 583,523. Patented June 1,1897.

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(No Model.) 17 Sheets-Sheet 11.

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PAPER BAG MACHINE. No. 583,523. Patented. June 1,1897.

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No. 583,523. Patented June 1,1897.

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PAPER BAG MACHINE.

N0. 583,528. Patented June 1,1897.

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I (No Model.) 17 Sheets-Sheet 14.

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PAPER BAG MACHINE.

No. 583,523. Patented June 1,1897.

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PAPER BAG MACHINE. No. 583,523. Patented June 1, 1897.

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No. 583,523. Patented June 1,1897.

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\VlLLlAM IVERTS, OF CAMDEN, NEXV JERSEY.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 583,523, dated June 1, 1897. Application filed July 8, 1891. Renewed October 15, 1896. Serial No. 609,031. (No model.)

Be it known that I, WILLIAM \VERTS, a citizen of the United States, and a resident of Camden, Camden county, New Jersey, have invented certain Improvements in Paper-Bag Machines, of which the following is a specification.

The object of my invention is to construct a machine for making with extreme rapidity from suitable tubular blanks square paper bags that is to say, bags having tucked or bellows-folded sides, and by preference also what are known as satchel-bottoms.-

The main feature of the invention consists in mounting upon an endless belt or carrier a number of bag-forming mechanisms which operate in conjunction with certain cams and supplementary forming mechanisms, so that a number of different operations, in fact, all of the successive steps in the making of the bag, may be carried on simultaneously,-one step in the operation upon one bag, another step in the operation upon another bag, and so on, so that in one machine a large number of bags maybe under construction at one time.

The invention also comprises the detailed construction of the various parts of the machine, as fully set forth and claimed hereinafter.

In the accompanying drawings, Figures. 1 to 9, inclusive, are perspective diagrams illustrating the successive steps in the formation of the bag upon my improved machine, only so much of the mechanism of the machine bein g shown as is necessary to a proper understanding of the operation of making the bag. Fig. 1 0 is a plan view of one of the main bagforming mechanisms of the machine. Fig. 11 is a longitudinal section of the same on the line so 00, Fig. 10. Fig. 12 is a front view looking in the direction of the arrow, Fig. 10. Fig. 13 is a side elevation of the various operating-cams and the rods connected to the bag-forming mechanisms shown in Figs. 10, Figs. 14 to 25 are plan views of the various operating-cams and in connection with each of the same those parts of the bag-forming mechanism upon which it acts. Figs. 26 and 27 are respectively a side elevation partly in section and a plan View of the pasting mechanism of the machine. Figs. 28

ing the endless belt or carrier with one set of bag-formin g devices mounted thereon and showing the relation of the same to certain operating-cams and to a second endless belt which carries devices for pasting the bottom of the bag; and Fig. 36 is a plan view showing said endless belt or carrier with its setof bag-forming devices, illustrating the relation of the latter to certain other operating-cams, to a certain drying-chest, and to a third endless belt which carries devices for removing the finished bag from the bag-former.

The machine which I have shown and will describe is one for making a square satchelbottomed' bagthat is to say, one having tucked or bellows-folded sides and a bottom with opposite inwardly-projectin g triangular flaps or pockets, so that when the bag is opened it will naturally. assume a square or box-like formbut my machine can by the omission of a number of parts be adapted for the manufacture of ordinary square bags that is to say, bags having tucked sides but having at the bottom a single transverse flap folded over and pasted on against one side of the bag.

In order to facilitate an understanding of the construction and operation of the mechanism of the machine, it will be best, in the first instance, to describe the successive steps in the making of the bag with reference only to those parts-of the machine which act upon the bag during its manufacture, and for this purpose reference may be had to Figs. 1 to 9 of the drawings.

The bag-blanks, in the form of tubes of the proper length, are made in a separate machine and are fed into the bag-forming machine by mechanism which will form the subj ect of a separate application for patent, and need not therefore be here further alluded to.

The bag-blank as is delivered by the feeding mechanism onto a pair of plates 1 1, located one above the other and of a width equal to the width of the desired bag, the blank being fed over these plates while the same are only separated from each other a short distance, and being allowed to project beyond the outer end of the plates to an extent sufficient for the formation of the necessary folds for the bottom of the bag. As soon as the blank has been applied to the plates 1 1 the latter are separated, so as to distend the tubular blank, as shown in Fig. 1, and a block 2 is thrust forward between the plates until it is flush with the outer ends of the same, as also shown in said figure.

Above the top plate 1 is another plate 3 with beveled or Vshaped front end, and beneath the lower plate 1 is a similar plate 3, these plates during the preceding operations having been retracted so that their beveled or Vshaped front ends are in the rear of the front edges of the plate 1. The plates 3 are now projected, however, so that their beveled front ends extend beyond the plates 1, as shown in Fig. 2, and form a bearing for the projecting end of the tube during the action of the lateral folding-fingers 4 t. There are two pairs of these fingers, one pair for each side of the bag, each pair comprising a finger close to the upper plate 1 and a like finger close to the lower plate 1, and the fingers have a swinging movement imparted to them, so that the two pairs act in succession and form first the fold it at one side of the bagblank, as shown in Fig. 3, and then a like fold :0 at the other side of the bagblank, as shown in Fig. 4, the effect of these side folds, owing to the projecting Vshaped ends of the plates 3, being to form at the top and bottom of the blank Vshaped flaps 00 as shown in Fig. 4. Paste is now applied by means of an Lshaped block or pasting-head 5, Fig. 5, to the outer faces of the folds 00 at the points 1 and to the upper face of the lower flap at the pointy, the pastinghead being then withdrawn sim ultaneously with or immediatelybefore the withdrawal of the plates 3. The upper projecting flap x is then folded downward by means of a folding-plate 6, as shown in Fig. 6, so as to overlap the pasted portion y of the side folds x, and the upper foldingplate 6 is then withdrawn and the lower flap m is turned upward against the bottom of the bag by a lower folding-plate 6, as shown in Fig. 7, so that the pasted portion y of said flap is brought into contact with the end of the upper flap and with the portions of the side folds an, adjacent thereto. The pasted folds are then subjected for a time to heat and pressure by means of devices to be hereinafter described, so as to insure the firm uniting of the pasted parts. During all these operations the block2 occupied a position at the front ends of the plates 1 and provided a bearing against which the successive folds of the bottom were laid, but this block is now withdrawn and the plates 1 1, carrying with them the plates 3, are caused to approach each other, and at the same time lateral folding or tucking plates 7 are caused to move inward between the plates 1 at each side of the bag, so as to form the opposite tucked or bellows folds therein, as shown in Fig. 8. The side folding or tucking plates 7 are then withdrawn and the bottom of the bag is acted upon by the upper folding-plate 6, so as to fold it over into line with the body of the bag, as shown in Fig. 9, it being understood that the folding-plate 6 is so pivoted that it can assume either a vertical or a horizontal position, or any position intermediate of the two.

The mechanism above described for forming the various folds in the bag is mounted upon a substantial framework carried by a rod 8, which is supported upon and is carried by an endless belt or conveyer, preferably in the form of a chain belt, having any desired number of chains. Thus, as shown in Figs. 10 and 11, the rod Sis secured to a conveyer having two chains 9 9, certain of the links of these chains being constructed for the reception of the rod 8, which is firmly secured thereto.

As stated in the specification, it is proposed to have a series of folding mechanisms upon the chain belt or conveyer, which folding mechanisms are brought successively under the control of the operating-cams, referrcd'to hereinafter, as said folding mechanisms are carried along by the belt, the cams beingstationary, and the endless belt or conveyer may be passed around opposite drums or pulleys, so as to have simply an upper and lower run, or it may be guided in serpentine form, where the size of the room or apartment in which the machine is situated is not such as to warrant the use of the simple straight belt.

The plates 1 are carried by cross-bars 10, which, as shown in Fig. 34, are carried by the front ends of the rods 12, suitably guided in hearings in the frame of the machine, so that they are capable of longitudinal movement and also of movement from and toward each other. The upper rod 12 is carried by the upper arms and the lower rod 12 by the lower arms of a pair of levers 13, which are hung to a cross'bar 1a on the rod 8, the upper rear arm of one lever and the lower rear arm of the other lever being connected by links 15 to a slide 16, on the rod 8, and said slide being connected by a rod 17 to a lever 18, hung to a block 19 on the rod 3, an antifriction-roller on this lever being under control of a grooved cam a, Fig. 14, whereby at the proper time forward and backward movements on the rod 8 are imparted to the slide 16, and the levers 13 are thereby expanded and contracted, so as to raise and lower the rods 12 and thus separate or bring together the plates 1.

The block 2 is carried bya pair of rods 20, which are suitably guided in the frame, and said block 2 is projected by the action of a cam bupon an antifriction-roller 21, carried by a cross-head at the rear of the rods 20, as shown in Fig. 15, the retracting movement of the block being effected by the action of a cam 1) upon said roller 21, as shown in Fig. 23.

The upper and lower plates 3 are carried bybars 30, as shown in Fig. 11, and the movement of said bars is -derived from cams cl, Fig. 16, these cams acting upon upper and lower rods 31, Figs. 10 and 11, the cams imparting forward movement to the rods, the backward movement of which is due to the action of springs 32. The upper rod. 31 is connected by a link 33 to an arm 34 on a-rockshaft 35, which has another arm 36, connected by a link to a bracket 37 on the frame 30, carrying the upper plate 3, while a stud on the frame 30, carrying the lower plate 3, is connected to one arm of a lever 39, the other arm of which is. connected to a lever. 38, which is connected by links to the front end of the lower rod 31.. This construction is shown by dotted lines in Fig. 10, and is also illustrated in Fig. 34.

The folding-fingers 4 at one side of the bag are operated by mechanism precisely similar to that which operates the folding-fingers at the other side of the bag. Hence it will not be necessary to describe more than one set of these devices.

The fingers 4 are carried by a rock-shaft 40, adapted to bearings in a frame 50, described hereinafter, rocking movement being imparted to the shaft 40 at one side of the machine from a camf, Fig. 18, and to the rock-shaft at the opposite side of the machine from a cam f, Fig. 20, these cams each acting through the medium of a rod 41, which is projected by the cam and retracted by a spring 42, the front end of each rod being connected by a rod 43 to an arm 44 on the rock-shaft, which also has another arm 45, adapted to engage with a spring-catch 46 at the top of the machine, so at to retain the fingers in their inward position after the rod 41 has passed beyond the control of its cam. Before any swinging movement of the fingers 4, however, there is an inward movement of the frame 50, carrying the same, such movement being efiected as to the frame at one side of the machine by a cam g, Fig. 17, and as to the frame at the other side of the machine by a cam g, Fig. 19. Each of these cams acts through the medium of a rod 51, which is projected by the cam and retracted by a spring 52, the forward end of each rod being connected by a link 53 to one arm of a bell-crank lever 54, the other arm of which is connected by a link 55 to one arm of a lever 56, the other arm of the latter being connected by a link 57 to the frame 50. Vhen, therefore, the frame is moved inward and the shaft 40 is rocked so as to fold inward the fingers 4 and cause the arm to engage with the spring-catch 46 said arm will be held by the catch until the frame is moved outward by the action of the springs 52 upon the rod 51 when the rod passes from under control of its cam.

, The mechanism for actuating the upper folding-plate 6 is under control of a cam h, Fig. 21, and the mechanism for operating the lower folding-plate 6 is under control of a cam h, Fig. 22, each of these cams acting upon a rod 61 to project the same, and each rod being acted uponby a spring 62 to retract it. The forward end of each rod is connected by a link 63 to one arm of a lever 64, which is hung to an arm 65 on a rod 66,

the other arm of said lever being connected to a bracket at the rear end of the plate 6. Each plate 6 is hung, however, at a point in advance of the bracket 67 to the front end of a bar 68, which is carried by a block 69 on the rod 66. Owing to this construction the movement of each plate 6 isa compound onethat is to say, it comprises a movement toward and from the plates 1 and a swinging movement on its pivot. When the plates 1 are separated, the plates 6 in their movement toward said plates 1 strike the front edges of the same at a point in the rear of the pivot. Hence the continued forward movement of the rod 61 is devoted to turning the plates on their axes, so as to fold in the flaps m of the bag-bottom, as before described, but when the plates 1 are close together the upper plate 6 in swinging toward said plates 1 strikes the same at a point in advance of the pivot, and hence is caused to move inward and rearward, so as to fold over the bottom as the bag in line with the body of the same, as before set forth. The final movementof the upper folding-plate 6, in order to form this last fold in the bottom, is effected by the action of a cam 7Z2, Fig. 25. Before this action, however, it was necessary to close together the plates 1 and form the side tucks, and this operation was eifected by means of a cam a, Fig. 24,. acting upon the lever 18, and thence upon the mechanism carrying the said plates 1.

The side tucking or folding plates 7 are moved inward simultaneously with the closing of the plates 1, and move outward simultaneously with the opening of said plates, so that they can be operated by connection with the same mechanism which effects the movement of the plates. The slide 16 is therefore connected at each side by an arm 71 to a swinging arm 72, hungtoacross-bar '73 on the rod 8, this swinging arm 72 being connected by a rod 74 to one arm ofa lever 75, hung to the fixed frame, and this lever being connected bya link 76 toayoke 77, which carries at its inner end the folding or tucking plates 7, as shown in Fig. 24.

The mechanism for applying the paste, as shown in Fig. 5, is illustrated in Figs. 26 and 27, this mechanism being carried by an end-- less belt or conveyer running adjacent to the

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