US3803991A

US3803991A - Method of inserting liners in bags

Info

Publication number: US3803991A
Application number: US00345588A
Authority: US
Inventors: H Leader
Original assignee: Individual
Current assignee: Individual
Priority date: 1972-05-22
Filing date: 1973-03-28
Publication date: 1974-04-16
Anticipated expiration: 1991-04-16

Abstract

A method of inserting liners in outer bags, whereby the bags can subsequently be filled with any desired material.

Description

Unite States atent [19] Leader Apr. 16, 1974 METHOD OF INSERTING LINERS IN BAGS [76] Inventor: Harold Leader, Box 325, Helena,

Ala. 35080 [22] Filed: Mar. 28, 1973 [21] App]. No.: 345,588

Related US. Application Data [62] Division of Ser. No. 255,429, May 22, 1972.

[52] US. Cl. 93/35 R, 93/8 R [51] Int. Cl B311) 1/74 [58] Field of Search 93/8 R, 36.01, 35 R, 35 H, 93/35 P, 35 C, 35 PT, 35 SB, 35 UL; 206/56 [56] References Cited UNITED STATES PATENTS 2,018,705 10/1935 Conti 93/35 R 2,135,132 11/1938 Boehmer 93/35 R 2,592,081 4/1952 Toulmin, Jr 915/35 R 3,512,338 5/1970 Nestler 93/35 PC Primary ExaminerAndrew R. Juhasz Assistant ExaminerLeon Gilden Attorney, Agent, or FirmSherman Levy [5 7] ABSTRACT A method of inserting liners in outer bags, whereby the bags can subsequently be filled with any desired material.

2 Claims, 8 Drawing Fig ures 1 METHOD OF INSERTING LINERS 1N BAGS CROSS REFERENCE TO RELATED APPLICATIONS Another object of the present invention is to provide a method of and means for inserting liners in bags wherein the insertion can be accomplished with a minimum amount of effort or motion, and wherein there will be a snug fit ofthe liners in the bags.

Another object is to provide a method and means of the character described that may be utilized speedily and efficiently by even inexperienced operators.

Further objects and advantages are to provide ir'n proved elements and arrangement thereof in a device of the character described that is economical to produce, durable in form and conducive to the most economical use of materials and uniformity of members formed therefrom.

Still furtherobjects and advantages will become apparent in the subsequent description in the specification. I

In the drawings:

FIG. I is a perspective view illustrating the two units that make up a bag, namely, the inner liner and outer bag.

FIG. 2 is a perspective view of the present invention showing the inner liners inserted in the trough or magazine.

FIG. 3 is a perspective view with an outer bag in place to receive a liner.

FIG. 4 is a perspective view illustrating a bag in the process of being pulled off the device.

FIG. 5 is a perspective view of a completed bag with the liner therein.

FIG. 6 is a top plan view of the front end of the form or device of the present invention.

FIG. 7 is a sectional view, taken on the line 7-7 of FIG. 6.

FIG. 8 is a sectional view taken on the line 8-8 of FIG. 7.

Referring in detail to the drawings, numeral indicates a device for inserting liners such as the liners in an outer bag 31. As shown in the drawings, there is provided an L-shaped bracket or support member 21 that includes a horizontally disposed portion 22 that is secured to a supporting table or structure 24 in any suitable manner, as for example by means of securing elements 23. The bracket 21 further includes an upstanding or vertically disposed portion 24. The horizontally disposed hollow magazine or trough 21 has one end suitably secured as by welding to the upstanding portion 25.

The magazine 32 includes a horizontally disposed bottom wall 26, vertically disposed spaced parallel side walls 27, and spaced parallel diametrically opposed horizontally arranged inwardly projecting gunnels or flanges 28, their inner edges spaced from each other so as to define or provide an elongated slot 29, FIG. 8, for a purpose to be later described.

The numeral 33 indicates the end portion of the magazine opposite the end that is secured to the bracket 21 and the end portion 33 includes an extended portion or section 34 as well as diverging or outwardly flaring wall sections 35, and there is provided an inclined bottom section 36 that terminates in a flaring or inclined triangular shaped tip 37, FIG. 3.

In FIG. 5 there is illustrated a completed unit 39 which consists of the outer bag 31 with a liner 30 therein, and as shown in FIG. 5, an end portion 40 of the bag is folded over and is adapted to be stitched or sewed, as at 41. Adjacent edge portions 38 of the bag are folded over upon adjacent sections to provide a closed end formation.

In thisposition, the numeral 42 indicates an extended end portion of the inner liner 30.

From the foregoing, it will be seen that there has been provided a method of and means for inserting liners in outer bags and in use with the parts arranged as shown in the drawings, the magazine or trough 32 is adapted to be loaded with a plurality of flexible liners 30, and the liners 30 may be made of a suitable material such as flexible plastic. I

Then, with the liner 30 arranged in the magazine 32, the operator can grasp an outer bag 31 with the hands, as shown in dotted lines in FIG. 3, and by moving the outer bag 31 with the hands 43 over the end portion 33, the bag 31 will be expanded or opened so that it can be moved from the dotted line position of FIG. 3 to the solid line position of FIG. 3. The fingers of the operators hands 43 can be arranged as shown in FIG. 4, so as to simultaneously grip an inner liner 30 and the adjacent end portion of a bag 31 whereby the outer bag with the inner liner can be removed from the device so that the device can then be used in the desired manner. After removing one of the outer bags with the inner liner, an end portion 40 can be folded upon itself and sewed or stitched as at 41 with adjacent corner portions 38 folded as in FIG. 5 to provide completed unit, which can subsequently be filled with dynamite, fertilizer, or any other material desired or required.

The parts can be made of any suitable material and in different shapes or sizes, as desired or required.

It will, therefore, be seen that there has been provided a device which permits liners to be inserted in bags of woven or non-woven fabrics or materials and wherein the liners can be inserted without damaging the liners or bags. The inner liner 30 may be made of a suitable material such as polyethylene, vinyl, extruded material, including paper and plastic and other fragile materials. The outer bag 31 may be made of any suitable material such as paper, propelyne, burlap, cotton and various laminations and coatings.

Heretofore, such liners have been inserted in bags by either putting the open liner over a round or square ended board and then slipping the outer bag over the inner liner, which causes the rubbing action between the inner and outer bags, or else the inner liner was inserted over a board which has a sheath around it with a slot in the top, and then slipping the outer bag over the sheath. Then it was necessary to pull both off simultaneously, and the disadvantage of this method is that approximately twice the amount of motion is required as compared to the present invention, and in addition more time consuming, due to the tight fit of the liner against the sheath.

in accordance with the present invention, there is provided a device that consists of a substantially U- shaped trough or magazine 32 that has inward facing gunnels or flanges 28. There is also provided a liner bag flat forming plate area 33 and the outer bag opening breaker tip 37. There is also provided the L-shaped back plate, bracket 21 for holding the device and this may be clamped to a suitable supporting surface and to the table 24.

When using the present invention, the magazine 32 serves as chamber which holds a plurality of folded liners 30, and the liners 30 may be inserted through the open slot 29 in the top of the magazine. The inwardly facing gunnels or flanges 28 assure that the folded liners 30 will not be abraded by the outer bag when the outer bag 31 is pushed onto the device. The flanges 28 also hold the liners in position for forming flat in the next area.

The liner bag forming plate or section 33 takes the U-shaped innermost liner 30 from the magazine and flattens it by pushing the center up and allowing the sides to go outward as the liner is pulled forward with the outer bag at identical surface speed without chafing, as shown in the drawings.

The outer bag opening breaker tip 37 opens the outer bag as it is pulled onto the magazine, as shown in FIG. 3, and assures that any glue, sizing, blocking, bottom seal and the like are broken loose before contacting the liner bag.

The L-shaped bracket 21 serves as the back to support the magazine and the bottom part is adapted to be connected to a table such as the table 24 by means of a C clamp or the like.

In the present invention there is provided a more economical and efficient way ofinserting liners in bags and for example, the present invention makes approximately twice the speed in accomplishing the same result as compared with previous methods. In addition,

the present invention prevents liner bags from being damaged while being inserted.

As a specific example of the use of the bag, the bag may be used for a deep hole explosive container. In such bags a misfire caused by damaged liners can cost as much as $50,000.00 in the cost of drilling and usipg explosives when used as an upset charge in a strip mine, or the like.

The present invention is not limited to use with such explosives, since it can be used wherever liners are to be arranged in outer bags.

As shown in the drawings, initially the liners are inserted in the magazine 32, and then the outer bag 31 is placed over the magazine, and the procedure is followed as previously described.

Although the invention has been herein shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices and apparatus.

I claim:

1. A method of inserting limp inner linings in outer bags, comprising the steps of arranging a plurality of flexible liners in a magazine, slidable arranging an outer bag over the magazine, simultaneously gripping a single inner liner and the adjacent end portions of the bag, and simultaneously manually removing the inner liner and outer bag over an expanding tip to automatically expand the outer bag and to provide a lining in the outer bag when the outer bag is removed.

2. The method as defined in claim 1, wherein after one of the outer bags has been removed with the inner liner, an end portion of the outer bag is folded upon itself and secured to adjacent portions thereof to provide a completed unit.