US1706082A - Cellular packing for fragile objects - Google Patents

Description

' March' 19; 1929.. SCHWARTZBERG 1,706,082

CELLULAR PACKING FOR FRAGILE'OBJEC'I'S Filed March 1927 2 Sheets-Sheet l March 19, 192 L. SCHWARTZBERG CELLULAR PACKING FOB FRAGILE OBJECTS 2 Sheets-Sheet Filed March 1927 Patented Mar. 19, 1929.

7 LOUIS SGHWARTZBEBG, OF CHICAGO, ILLINOIS.

CELLULAR PACKING FOR FRAGILE OBJECTS.

Application filed March 5, 1927. Serial No. 172,974.

My present invention relates to improvements in cellular packing for fragile objects, such as eggs and objects made of glass, china and the like. I prefer to mould or otherwise form my packing from paper pulp or analogous material which is a trifle thicker and softer, but less pliable, than the same amount of stock after the same has been rolled in ac-' cordance with the usual practice in manufacturing paper. I am aware that paper pulp has already been used in forming packing, and sheets of such material have been pro.- vided having recesses, or cavities or cells of the shape of the articles to be received and packed. Such a construction, however, does not afiord facilities for properly receiving objects of different shape and objects of even a similar shape but different sizes. My present invention, however, is so formed as to permit of a distention of the cells or recesses or cavities and to require such a distention upon the insertion of the object to be packed, whereby the packed objects are not only separated from each other in separate cells, but are also restrictively and yieldingly held in their respective cells so as to exclude all movement which would otherwise occur on account of an imperfect fit of the object in the recess.

It will also hereafter be seen that by arranging the recesses or cavities or cells in rows and inclining the Walls of adjacent cells of .the-

same row and adjacent rows of cells with respect to each other and providing an area or space of disengagement between the walls between adjacent cells of the same row and the walls between adjacent rows of cells I have introduced an additional spring to the walls of each cell which assists the cell in both conforming with and holding the object placed therein. 7

While the constrictive holding of the object within the cell is in many cases sufiicient for securing its safety, it is in some cases desirable to provide the cells with bottoms, and instead of forming the bottoms directly between the lower edges of the cell walls, I revert the cell wall inwardly and upwardly and then form the bottom of any desired configuration between these inwardly and upwardly reverted edges, whereby there is provided a double annulus at the bottom of'each cell which adds materially to both the strength and elasticity of the structure as a whole.

I secure the foregoing objects and results by means of the structure illustrated in the accompanying drawing in which Fig. l is a plan of a structure comprising two rows of cells formed in accordance with my presentinvention;

Fig. 2 is a side elevation of the structure shown in Fig. 1, the forward or near walls of the two cells at the right being broken away to more clearly show the form and nature of the corrugations in the inner walls;

Fig. 3 is an end elevation of the structure shown in Figs. 1 and 2 in which the web between adjacent rows of cells is carried above the cells;

Fig. 4; is a viewsimilar to that shown in Fig. 3, except that the web between adjacent rows of cells is not carried above the cells and may be regarded as being suppressed except in so far as being sufliciently present as to secure the function of connecting the adjacent rows together;

Fig. 5 is av fragmental, perspective, corner view of the structure shown in Figs. 1 to 3 especially showing the length or area of disengagement between the walls between adjacent cells in the same row and the walls between adjacent rows of cells;

' Fig. 6 is a plan, similar to Fig. 1, in which the cells are shown without corrugations:

Fig. 7 is a side elevation of the structure 7 shown in Fig. 6 the near walls of the two cells .cell with a modificd form-of bottom; and

Fig. 10 is a central, vertical, section through a cell showing a still further modified form of bottom.

Similar reference characters refer to similar parts throughoutthe several views.

The structure may be either regarded as a sheet or blank of material in which is provided recesses, cavities or cells, or as parallel rows of cells connected by webs-extending between their upper adjacent edges. Such sheets or Webs are designated by the reference character 15. The Walls, or vertical walls, 16, of the individual cells taper inwardly from their upper to their loweredges, which taper is adequate for maintaining objects in adjacent cells properly separated. In the outside walls of the outside cells are prowalls to spring, flex or distend outwardly or rather transversely or horizontally by the insertion of an object within a cell. In the walls of the cells facing adjacent rows of cells I also provide corrugations, 18, but these interior corrugations preferably start from a point about a third or a quarter of the'distance from the tops of the cells and gradually increase in dimensions to the bottom of the cells. This feature is shown clearly in Figs. 2 and 5. The greater the number of corrugations the greater amount or lateral spring which the cells have, and, also, which is of importance, the more widely'the distention occurring in a particular case is distributed around the walls or" the cell.

The connections or webs, 15, between adjacent cells. oi the same row are preferably restricted as much as possible to conserve space, so that the wall of one cell upon reaching the top immediately turns downwardly to form the adjacent wall of the adjacent cell. This is shown in Figs. l and 5. In

order to secure, or rather retain, thespringarising from the taper of thesewalls they are cut away or otherwise separated from the walls extending between the adjacent rows of cells, as shown at 19 in Figs. 5 and 8.

In order to increase the spring in the wallsbetween adjacent rows of cells the web 15 may be extended above the tops of the cells, as particularly shown at 20 in Figs. 2, 3, 5, 7 and 8. By properly proportioning these divers features which impart spring to the.

walls of the cells to the weight and strength of the articles to be packed an unusually high degree of safety may be secured;

When, by reason of the weight of the objects to be packed, or for other causes, it is deemed that the spring given to the walls of the cells is not sufficient for safely holding the objects a bottom may be added as shown in Figs. 7 to 10-in'clusive. Instead of extending this-bottom directly between the lower edges of the cell walls, I prefer to revert the cell walls inwardly and upwardly, as at 21. The'bottom is then extended between the re verted edges either directly, as shown at 22 in Figs.'7 and 8; or with a downward dip as at 23 in. Fig. 9; or with a downward corrugation and upward boss, as at 24 in Fig.

10; or, in tact, in any desired manner to suit the form and weight of the objects. The reintorceinent secured by the reversion of the side walls of the cells, besides reinforcing the structure as a whole, also serves to restrict-the sprin of the cell walls to their central areas liich is peculiarly desirable with certain shapes of objects.

Having described any invention what 1 claim as new and desire to secure by Letters Patent i's,- v

1. A cellular packing consisting of an integral structure moulded from fibrous pulp comprising a series of cells tapering inwardly on all sides from their tops to their hottoms, said cells being disposed in parallel rows and having a connecting web extendcent cells in the same row and the walls between adjacent rows of cells being disengaged at their upper ends.

lie

3. A cellular packingcon'sistinn of an in tegral'structure moulded from fibrous pulp comprising a series of cells tapering inwardly from their tops to their bottoms, said cells being disposed in parallel rows and having a connecting web extending between their upper adjacent edges,,the lower portions or the walls of said cells being reverted inwardly and upwardly and a bottom of desired form extended betweeh said reverted edges.

' 4. A cellular packing consistin of an integral structure mou1ded from fi rous pulp comprising a'series of cells tapering inwardly from their to s to their bottoms, said cells being dispose in parallel rows, and having a connecting web extending between their upper adjacent edggs, the web between cells adjacent rows ing extended above the tops of said cells.

LOUIS SGHWARTZBEBG.

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