Eastern Paper Bag Co. v. Continental Paper Bag Co.

• Decision Date: 09 October 1905
• Docket Number: 546.
• Citation: 142 F. 479
• Parties: EASTERN PAPER BAG CO. v. CONTINENTAL PAPER BAG CO.
• Court: U.S. District Court — District of Maine

142 F. 479

EASTERN PAPER BAG CO. v. CONTINENTAL PAPER BAG CO.

No. 546.

United States Circuit Court, D. Maine.

October 9, 1905

Betts Betts, Sheffield & Betts, and Francis T. Chambers, for complainant.

Albert H. Walker, and Symonds, Snow, Cook & Hutchinson, for respondent.

The following represents the draft as amended in pencil before January 7, 1896, when read, with the pen additions, and without the words canceled or italicized:

UNITED STATES PATENT OFFICE.

William Liddell, of Brooklyn, New York, Assignor to the Eastern Paper Bag Company, of Connecticut.

Paper-Bag Machine.

Specification forming part of letters patent, No. No. 558,969, dated April 28, 1896.

Application filed February 6, 1896. Serial No. 578,291. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM LIDDELL, of the city of Brooklyn county of Kings, State of New York, have invented an Improvement in Paper-Bag Machines, of which the following is a specification.

My invention has reference to paper-bag machines; and it consists of certain improvements which are fully described in the following specification and are shown in the accompanying drawings, which form a part thereof.

This application comprehends certain mechanism for forming a satchel bottom upon the tube in the manufacture of paper bags, and has for its object the production of a perfectly-formed satchel-bottom bag in a speedy and accurate manner. My improvements, briefly stated, may be described as follows: The tube is received upon a revolving cylinder and carried forward by a nipper, which clamps the lower sheet of the tube, or by other means hereinafter described. The upper sheet of the tube passes above a finger upon a movable forming-plate securely held at a short distance from the revolving cylinder and between which and the cylinder the tube is guided. The forming-plate is then caused to rotate about its rear edge simultaneously with its movement or travel with the revolving cylinder, thereby opening the end of the tube, spreading with the side folds, and marking a creased line transversely. Simultaneously with this forming-fingers are projected into the side folds, one pair being adapted to the cylinder and the other pair to the forming-plate. A continued movement of the parts causes the upper layer or sheet of the tube to be completely turned backward upon itself, and at the same time the forming-fingers together with the other parts insure the proper formation of the diamond fold. The tube in this shape leaves the revolving cylinder, passes to the pasting devices and thence to the folder.

The invention will be better understood by reference to the accompanying drawings, in which--

Figure 1 is a side elevation of a paper-bag machine embodying my improvements. Fig. 2 is a plan view of a portion of the same. Figs. 3 and 4 are sectional elevations on the line .r .r of Fig. 2, showing the operations of the parts in the formation of the bottom. Figs. 5, 6, 7, and 8 are perspective views illustrating the several manipulations which take place upon the bag-tube in its formation under the action of the nipper and the forming-fingers. Fig. 9 is a diagram illustrating the employment of a continuous or connected series of tubes to insure their being fed with the cylinder and obviating the necessity of nippers. Fig. 10 is a plan view of the paper tube employed in connection with Fig. 9. Fig. 11 is an inverted plan view of same, and Fig. 12 is a longitudinal section of the tube on line z z.

A is the main frame of the machine.

B is a shaft carried upon the main frame and upon which is supported the forming-cylinder C, which may be provided with one or more nippers c, adapted to be closed and held closed by the action of the spring c', and opened by the action of a pin C-2, acting upon the star-wheel C'. The nipper is also controlled as to its being closed by the action of the pin C-3, also acting upon the star-wheel. These devices operate to enable the nipper to close upon the forward edge of the under layer of the bag-tube, and after the formation or creasing of the bottom into the diamond folds to release the bag-tube.

D D are two feed or guide rollers adapted to properly deliver the bag to the cylinder C.

E is a forming-plate and is hinged at e to the arm F, journaled to the main frame at f. This arm F is drawn toward the cylinder C by a spring F', and is moved away from the cylinder about the axis f by gear K.

L is a rotating power-shaft carrying cam and is driven by a belt-pulley L' and operates the cylinder C by gears M-2 M-3. Spur-gears M' M N operate the axis e of the forming-plate E when the arm F is moved. Of these gears M' is substantially fixed, and hence when the arm F is moved its gears M work upon gear M' as if it were a rack. This causes motion to the plate E about e as an axis.

As the motion of the arm F is irregular and not always in the same direction for one continuous movement of the former-plate E, I cause the gear M' to be moved somewhat to compensate for this. On the shaft L, I arrange a cam K, which acts upon a rod k to reciprocate it, and this by link k-2 rocks the gear or rack M'. The cams K and K insure a proper return movement of the arm F and former-plate E, and in time with the rotations of the cylinder C. In place of these devices for controlling movement of the plate E relatively to the cylinder C the said plate may be moved or operated by any other suitable means. The return movement of the plate E is unimportant, so long as it is secured in time to receive a new bag-tube or section thereof.

The cylinder C has pivoted upon its periphery fingers G G, which are normally out of the line of the bag-tube, but which may be projected inwardly by the action of a cam I', secured to the main frame A. The fingers G G are connected together by arms g and a link G', arranged in the under side of the cylinder-surface, and one of them is further provided with an arm G-2, adapted to come in contact with the cam I' during the rotation of the cylinder and thus cause said fingers to be projected inward, as indicated in dotted lines in Fig. 2, so as to enter the bellows side folds of the tube. The former-plate E has its rear edge made sharp, as at W, so that when it presses downward upon the bag-tube it forms a transverse crease about which the paper bends, as clearly shown in Figs. 4 and 6. This former-plate E is also provided with fingers H H, corresponding to the fingers G G, which are connected by arms h and link H' precisely as are connected the fingers G G, and are operated by means of a spring J in one direction to hold them out of action, and a stationary cam I, acting upon an arm or projection H-2, to move them inward or in the other direction, so that they enter the bellows side folds precisely as at the fingers G G. Stops J' limit their movement in one direction.

The rear or free end of the former-plate E is provided with eyes E-2, which are received upon projections A', as clearly shown in Fig. 3, so as to be maintained out of the line of the bag-tube in entering between the said plate and the cylinder C after it has been caught by the nipper c and moved forward. When the bag-tube is moved to the position shown in Fig. 3, the upper layer of the paper is moved over a finger E', arranged adjacent to the axis e and below the former-plate E'. As the plate E is moved forward with the bag-tube the eye E-2 leaves the projection A', as shown in Fig. 4, and the edge W presses down upon the paper, forming a line or crease. It will also be observed that as this takes place the fingers G H upon each side at their free ends are brought more or less together, and at the same time the ginger E' moves away from the nipper c, opening the bellows side folds, as indicated in Fig. 4. This permits the ready entrance of the fingers G H under the action of the cams I' I, and these fingers continue to maintain their position during the successive formative actions of the machine. As the cylinder C moves forward the plate E rotates upon its own axis e and also about edge W as an axis, as indicated in Figs. 6, 7, and 8, which action is so timed that the several fingers G H, nippers g, and finger E' operate to form the several actions upon the tube substantially in the manner as indicated in Figs. 2 to 8. As this folding action is completed the fingers G H quickly fly out of the folds of the tubes when their arms G-2 H-2 lift the cams I' I, and the bag in its folded condition is still held by the nipper c and carried forward with the cylinder C. It is then delivered to the rolls S, having pins s, thence to the paste-rolls Q T, of which Q applies the paste after having received it from the rolls P P and vat O. The bottom is then folded by the knife r, which folds the paper upon itself between pressure-rolls R R. It is quite evident that the delivery, paste, and subsequent folding devices may be made in any of the well-known manners, and their particular construction is immaterial to my invention. I do not, therefore, deem it necessary to describe the minute details of these devices, but illustrate them so as to show their relative position in a machine of the class described.

When the cylinder C advances sufficiently to deliver the bag to the feed-rolls S, the starwheel reaches the pin C-2 and opens the nipper c to release the paper bag, and the said nipper remains open until it reaches the pin C-3, which closes the nipper upon another bag-tube. I have shown two such nippers and their operating mechanism, and it is evident that so far as my improvements are concerned one or more of these devices may be employed by simply reducing or enlarging the diameter of the cylinder C, maintaining its surface speed the same.

As soon as the tube has been...