US150832A - Improvement in vessels for excluding or retaining heat - Google Patents

Description

i 8., QRANE. v

Vessels for Excluding or Retaining Heat.

N0,i50, 32, Patented Ma 12,1874.

UNITED STATES SEYMOURCRANE, OF DALTON, MASSACHUSETTS.

I IMPROVEMENT IN VESSELS FOR EXCLUDING OR RETAINING HEAT.

Specification forming part of Letters Patent No. 150,832, datcd May 12, 1874; application filed .March 26, 1874.

T0 allwhom it may concern:

Be it known that I, SEYMOUR CRANE, of Dalton, in the county of Berkshire and State of Massachusetts, have invented an Improved Vessel for Excluding or Retaining Heat, of which the following is a specification:

The object of this invention is to produce a neat, serviceable, .and inexpensive vessel, adapted to household purposes, for preserving from the effects of heat certain articles, as, for instance, butter or ice-water, or for retaining the heat in other articles, such, for instance, as coffee, tea, and other warm beverages, in order to keep them warm. The invention consists of a metallic vessel provided on its periphery with lugs or projections extending the whole length of the vessel, around which is arranged a covering of paper, said lugs serving to hold and support the paper at a slight distance from the vessel for creating an intervening air-space, and said paper covering being confined in place at its upper edge by-an overlapping flange on the vessel, the whole being constructed so that the covering of paper and intervening space effectually prevent the passage of heat into or from the vessel, as hereinafter described.

I am aware that ice-pitchers have been provided with double walls, the outer one of which is of paper, with an intervening airspace, but in such no provision is made for supporting the paper wall, which will soon become broken, mashed, and useless. By my invention I provide the periphery of the vessel with lugs or projections extending the entire length of the vessel, which, while effectually strengthening and supporting the outer wall of paper, provides the necessary intervening air-space, which, in connection with the paper covering, prevents the passage of heat into or from the vessel. Such cannot be accomplished effectually without the intervening air-space, and to provide this air-space it is absolutely essential to support the paper covering at a distancefrom the vessel, which I accomplish by the lugs or projections.

In the accompanying drawin Figure l is a central longitudinal section otlthis improved vessel for excluding or retainipg heat; and

Fig. 2 is a cross section of the same, taken on the plane of the dotted line or m, Fig. 1.

A designates the inner metallic shell, which contains the matter or articles to be preserved, such shell, in this instance, extending from themouth to -the bottom or opposite end of the vessel. B B indicate a series of lugs or longitudinal projections, which are arranged at intervals on the outside of the shell A. They are fastened in place by any suitable means, as by adhesive cement, and preferably have sharp outer edges, because, when thus made, the paper case 0, which is stretched around them, will assume sharper angles, and have a more clearly defined polygonal shape, as illustrated in Fig. 2. The case 0 is made of paper, which is a cheap and good non-conductor of heat. It may consist ofa seamless tube of pa per, or may consist of a sheet made into a band, and be slipped over the lugs B B on the shell A; or it may be lapped around the lugs and afterward fastened at the meeting edges. It is shown turned up at the bottom edge, (see Fig. 1,) to give it stiffness and strength at this point, and is fastened to a disk or polygonally-shaped plate or bottomv piece, E, which is attached to the bottom of the shell A. A band, Gr, envelops the upper portion of this case O, and is bent over its edge and under a flange or rim, a, formed at the mouth of the shell A, and thus incloses the space intervening between such shell and the case 0, forming an inclosed air-space, which will very effectually assist the, case 0 of non-conducting material in preventing the passage of heat either into or out of the vessel. Thisshell G will preferably be varnished, japanned, or otherwise treated to render it impervious to moisture, and it will be readily seen that in thus treating it various designs may be imparted to it without materially increasing its price.

A cheap and good way of making a cover for this vessel is to produce an arched or con Vex top, H, with. an ordinary flange, b, and a rim or band, 0, to fit within the mouth of the vessel, and to fasten within the seam between such top H and its band 0 a sheet or disk, I, of paper. It will be seen that in this cover will be but little affected by the outside tem-,

perature.

I elaim- The combination of the vessel A, provided on its periphery with the lugs or projections B, with the paper covering 0, as described,

whereby the paper is strengthened and supported at a slight distance from the vessel by said lugs, to create the intervening air-space and all being constructed as herein described, for the purposes specified.

SEYMOUR CRANE.

Witnesses HENRY T. BROWN, MICHAEL RYAN.

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