US2123438A - Method of producing open mesh bags - Google Patents

Description

July 12, 1938.

W. E. SACKNER ET AL METHOD OF PRODUCING OPEN MESH BAGS Original Filed 001;. 21; 1956 INVENTOR. I VaaeE.60 c/mer BY J0/7/7 E. MM/flf ATTORNEYS.

Patented July 12, 1938 UNITED STATES PATENT OFFICE Wade E. Sackner and John E. Millett, Grand Rapids, Mich.

Original application October 21, 1886, Serial No.

Divided and this application March 18. 1937, Serial No. 181,626

1 Claim.

This invention relates to the manufacture of open mesh bags for produce such as onions, potatoes or the like and particularly to such bags made from twisted paper cords or strands interwoven together. In making such bags. it is essential to have suillcient strength to withstand strains imposed by shipping and handling and it is likewise desirable to have large enough openings between meshes so that the produce in the 10 bag can be viewed with ease. Such bags have been made of single strands of interwoven twisted paper cord, but in order to obtain the desired strength it is necessary to have the meshes closed up so as to interfere with the viewing of the prod- 1 not. Leno weave bags have been made. but such bags are not satisfactory because the spacing between the single strands cannot be wide enough while maintaining the desired strength. In the bags made from single strands woven as a mesh,

20 considerable difficulty is experienced in use because the strands tend to move along one another and become displaced.

This application is a division of our copending application which issued as Patent No. 2,078,! 14,

.35 on April 27, 1937, for Open mesh bags.

The objects of this invention are:

First, to provide a method of producing a new and improved bag of the type referred to in which the difficulties above mentioned are overcome and in which a suillciently wide mesh may be had for viewing the produce in the bag.

Second, to provide a method of producing such a bag in which the strands of paper are so disposed as to provide relatively large meshes without sacrificing strength.

Third, to provide a method of producing such a bag in which the strands are so arranged that the displacement or sliding thereof is effectively prevented.

Fourth, to provide a method for producing fabric for such'bags which will simply, inexpensively and efiectively produce a bag of the desired type.

Further objects and advantages pertaining to etails and economies of construction and operation will definitely appear from the description to follow. A preferred embodiment of our invention is illustrated in the accompanying draw- 50 ing, in which:

Fig. i is a perspective view of a bag made in accordance with our invention.

Fig. 2.is a detailed view showing the arrangement of the warp and weft strands in the fabric 55 of the bag.

Fig. 3 is a detail sectional view taken on line 8-4 of Fig. 2.

Fig. 4 is a detail sectional view taken on line 4-4 of Fig. 2. v

In the drawing, the bag I is of an open mesh type having the openings 2 through which produce is to be viewed. The fabric of the bag is made up of a plurality of twisted paper strands. The paper employed is of such weight that these strands or cords are about twenty-eight thousandths of an inch in diameter and we have found that with such cord the bag can be made inexpensively and of suflicient strength. The strands 3 are arranged as shown in Fig. 2. Warp strands 4 are disposed in pairs. The pairs are spaced apart and the individual strands of each pair are spaced relatively close together. In a very satisfactory arrangement the pairs of strands are spaced apart about one-fourth of an inch and the individual strands of each pair are spaced apart slightly less than one-eighth of an inch.

In setting up a loom, the warp threads 4 are set up in pairs as shown and the individual strands of each pair are set up to fall in opposite sheds of the loom. The weft strands 5 in the material are arranged substantially identically with the warp strands. That is to say, they are in pairs, the pairs being spaced about one-fourth of an inch apart in a very satifactory bag and the individual strands of each pair being spaced apart slightly less than one-eighth of an inch. The individual strands of each pair are on different sheds of fabric as will be noted from reference to Fig. 2. p

In weaving the fabric, the weft strands 5 are woven into position and the loom is operated to change the shed and a second weft strand is woven in place. Both of the weft strands 6 of each pair are woven on a single take-up pick of the loom. In other words, the loom picks twice and then takes up or advances the warp ahead once, so that the take-up pulls the warp ahead only after every other pick of the loom.

It will be observed that in carrying out this method of weaving two weft strands in a single take-up pick, the weft strands 5 will be relatively close together and that the changing of the shed with the two weft strands close together tends to kink or deform the warp strands 4 as is shown at 6 in Fig. 3. The paper strand or cord, while not entirely inelastic, is suiflciently moldable that the deformation due to the close spacing of the individual strands of the pair leaves the kink or deformation in the strand. Similarly, it will be noted by reference to Fig. 4 that the weft strands are deformed by the operation of changing the shed in weaving. This is extremely advantageous in that the kinking of each strand at its place of crossing each other strand tends to prevent the cross strands sliding longitudinally on the other strands, so that the meshes remain open throughout the life of the bag. This could not be accomplished with ordinary burlap, and it is essential that a paper cord which is not completely elastic be used. The resultant fabric which has the individual strands of ,each pair of warp strands in diflerent sheds and has the individual strands of each pair of weft strands in opposite sheds may be made simply and easily on a standard loom and its has not been considered necessary to here illustrate the loom.

The finished material which has at the top, as shown at I, a series of substantially solid weaving, is cut in suitable lengths and the edges of the pieces are stitched together as at I to Iorm the finished bag I.

amasaa Having thus described our invention. what we 0185511111 as new and desire secure by Letters Paten 5:

The method of producing paper mesh fabric for produce bags or the like, comprising disposing' warp strands of twisted paper cord for weaving in spaced apart pairs with the individual strands of each pair disposed relatively close together and in opposite sheds, and weaving in twisted paper cord weft strands a pair to each take-up pick with the individual strands of each pair on opposite sheds of the warp, whereby the weft strands are disposed in spaced apart pairs with the individual strands relatively close together and whereby each strand of weft or warp is kinked at its point oi crossing each other strand.

WADE E. SACKNER. JOHN E. MILLE'I'I'.

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