US221564A

US221564A - Improvement in corrugated paper dishes

Info

Publication number: US221564A
Authority: US
Publication date: 1879-11-11
Anticipated expiration: 1896-11-11

Description

C'. INGERSOLL.

Corrugated Paper Dish.

10.221,564. Patented Nov. 11, 1879.

UNITED STATES PATENT OEEICE CHALMERS INGERSOLL, OF BELOIT, WISCONSIN, ASSIGNOR TO THE PAPER NOVELTY COMPANY, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN CORRUGATED PAPER DISHES.

Specification forming part of Letters Patent No. 221,564, dated November 11, 1879; application filed March 14, 1878.

To all whom 'it may concern:

Be it known that I, GEALMERs INGERsoLL, of Beloit, in the county of Rock and State ot' Wisconsin, have invented a new and useful Improvement in Corrugated Paper Dishes, which is fully described in the following specification, reference being had to the accom-v depth at any suitable angle.

In the manufacture of grocers7 dishes of paper it has been customary' to compress the sheets of paper between plain dies, which bend up the edges forming the sides of the dishes.

Owing to the nature of the material, which is not ductile, like metal, nor plastic, like pulp,

the turning up of the sides either cuts or breaks or distends the material, and thereby tears the same or wrinkles it in overlapping folds, which, owing to their increased thickness, prevent the dies from pressing evenly ou the whole surface of the dish, so that the surface thereof is rough and irregular, While the pressure of the articles heldby the dishes will unlap or distend the folds and turn down the sides, bringing the sheets to their original flat form. This is especially the case when the articles are in liquid form or the dish becomes dampened.

In the manufacture of expensive and finelynished articles, as washbasins, platters, and other articles intendedv for permanent use, these difficulties may be overcome or avoided by the molding of pulp as it comes from the engine, or by subsequent glazing or finishing processes; but in the production of butterdishes and similar articles intended as receptacles to be given away with the article sold such means of production and finish are too expensive for practical use. In order to correct these defects without any increased cost of production, I make a dish in which the excess of material that results from turning up the edges of asheet to form the flaring sides is taken up by regular folds or corrugations e without breakin g, distendin g, or overlappn g any part.

The corrugations are deep at the top and vanish at the periphery t of the bottom, so that there is no distention of the material at the lower ends of the corrugations.

The amount of surplus material increases in proportion to the angle and height of the ilaring side from the bottom of the dish. After being pressed the dish is dried, when it will reta-in permanently the form imparted by the dies.

The character and arrangement of the corrugatious will depend upon the shape and depth of the dish and the inclination of the sides. It is necessary, however, that the corrugations beginning at the periphery of the bottom increase in depth toward the top.

Oblong dishes are best corrugated at the ends, which are made rounded, as shown in Figs. 1 and 2. Circular dishes may be corrugated throughout the entire sides.

I claim- The within-described dish, made of a single sheet of paper, with the edges turned up to form sides, with corrugations decreasing in depth toward and vanishing at the periphery of the bottom, substantially as set forth.

CHALMERS IN GERSOLL.

Witnesses H. B'; ALLEN, I. N. RAWsoN.