US1564811A - Heat-insulated receptacle - Google Patents

Description

Dec. 8, 1925.

G. c. ANTHON HEAT INSULATED RECEPTACLE Filed Aug.

. 1919 2 Sheets-Sheet 1 Dec. 8,1925.

G. C. ANTHON HEAT INSULATED RECEPTAOLE 2 Sheets-Sheet 2 Filed Aug. 11, 1919 ATTORNEY.

- To all whom it may concern i manual). 8,1925.

UNITED STATES GEORGE C. AUTHOR, 01 NEW YORK, N. Y.,

PATENT OFFICE.

ASSIGNOR '10 STANLEY INSULATING COH- muw, or came naanme'ron, -mssacnusnrrs, A CORPORATION or name.

' m'r-msuna'ran nacnr'mcm. I

Application med August 11, 1919. Serial No. 316,829.

Be it known that I, Gnonou C. ANTHoN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Heat-Insulated Receptacles, of which the following is'a specification.

This invention relates to thermally insulated receptacles of the type generally known as vacuum bottles and particularly to those in which the spaced shells of the receptacle are made of metal, such as steel, joined together at the neck of the bottle as by means of welding. This joinder of the inner and outer shells provides in effect a thermal .bridge between the two shells across which a transfer of heat may take place, and which therefore detracts to a certain extent from the efliciency .of the device.

One of the objects of my invention is to reduce so far as possible, these losses through the neck or connecting bridge between the two shells; and further toaccomplish this result without impairing the physical structure of the vessel or interferlng with the securing of the parts together by means of welded joints.

Another object of the invention, is to so construct the parts that the inner and outer shell may be held fixed in spaced relation wholly by means of the connection between the neck portions of the two .shells.

Accordingly, one feature of the invention consists in the provision of aconnecting neck-piece between the innerand outer shells of a material which is of greater thermal 1'esisti"ity than the material of the shells;-

In. the case of steel shells I find a. specialv alloy of nickel and copper particularly suited for this thermal bridge, and this alloy between the parts, which joints,

also is of such a nature that it can be readily welded to the metal of the shells.

Another feature of ,the invention is the provision of over-lapping telescopic joints of their over-lapping relation, brace the connected parts so that the inner shell ma besupported wholly by means ofthe nec portion between-the-two-shells. Other features ofi the-invention will appear as .thespecification roceeds In the accompanying rawin I have illustrated 'in Figures 1 and 2 ongitudinal sectional -views of practical and preferred embodiments of my invention, but would have it understood that thestr'ucturcmay be modified in various respects without dearture from. the s irit and scope of the invention as defined in the appended claims.

In these drawings, and'in. Figure 1 ticularly, 1' designates the outer shell and 2 the inner shell, said shells being usually constructed of steel and separated by. an intervening heat-insulating space 3 exhau'sted to the roper degree and-containing usually a filling of gas-absorptive material.

4 designates the thermal insulating neckpiece connecting the outer and inner shells,

par-

said neck-piece beingflshown herein as a slightly tapered sleeve fitted telescopically at its upper end in the flanged neckiece 5 of the outer shell and similar] to esco ically' engaged at its inner en with t e flanged neck portion 60f the inner shell.

The: high thermal resistivity orthermal insulating character of this bridging element between the outer and inner shells is obtained by making said element of a metal which is oflow thermal conductivity. At the present time I use an alloy for this purpose of substantially fifty per cent nickel and fifty per cent copper. This alloy answers the purpose of a metallic ther-, mal insulator between the outer and inner shells and also is of such a character that it can be welded to the steel shells. These welded connections .are made at the relatively wide over-lappingjoints at 5 and 6 between the outer and 'inner shells and the opposite end ortions of theneck-piece. In'

addition to, acilitating the formation of good welded joints, the over-lapping 'telescopic connections described serve to brace the connected inner and outer shells. And while the overlapped joints provide an increased surface contact between the shells and the neck'-.

uction at these joints is more than overcome by the intervening splan of hi 'her I thermal resistivit between t e two shlls.

[The inner shel is shown made in two parts, the lowerbody part (indicated at 2) and an upper part 7 o substantially frustoconical shape. This upper section 7 is also shown connected by means of a telescopic over-lapping joint with the lower body section as indicated at 8, thus carrying forward the bracing efi'ect already referred to.

The outer shell is shown closed at the lower end by inner'and outer bottom plates 9 and 10 and a false bottom 11, said parts being suitably secured to the shell as by means of the over-lapped welded joints illustrated. The inner bottom plate 9 is shown formed with a cupped depression 12 in the centre thereof perforated as shown at 13 for the escape of gases during the. exhausting process To prevent exhaustion of the filling material as well a filter 14 of material such as mineral wool may be placed in this pocket. The second bottom plate 10 is shown provided with a central depression or cup 15 providing a chamber about the perforated cup of the first bottom into which opens the exhausting tube 16 which, upon the completion of the exhausting process, is sealedoff in any suitable manner.

In the second form of the invention illustrated (Figure 2) the outer shell is formed with an annular shoulder 17 in the neck portion thereof and with an annular enlargement 18 below said shoulder providing a seat in which the outer end of the neck-piece l is-engaged. Preferably the parts are so proportioned that the inner wall of the neck-piece will be in line with and form a continuation of the inner surface of the neck portion of the outer shell, as indicated. This allows for a smooth flow of the liquid, and the relatively wide overlapping joint at 18 provides a secure connection between the parts and one which, is readily welded.

The mouth of the outer shell may be finished off with a bead or rolled-over portion 19 which may stand out far enough to substantially cover the enlarged and shouldered portion of the neck of the outer shell.

These metallic. receptacles are usually provided with a non-corrosive lining of suitable material, such as enamel. This enamel adheres readily to the steel shells, but in some cases less readily to the neckpiece which, as above described, is usually constructed of an alloy of higher thermal resistivity than steel. The construction illustrated in Figure 2 is particularly advantageous in this connection, in that the enamel coating, which extends continuously from the inner shell through the neck-piece to the mouth of the outer shell, is in this case firmly anchored at the opposite ends of the neck-piece, at the points indicated at 20 and 21 to the steel inner and outer shells, The lining is thus permanently secured at the opposite ends of what may be the weakest portion thereof and at the point where the wear comes, that is, at the mouth of the receptacle, the enamel is continued with the steel of the outer shell and with which it forms a permanent and durable I connection.

I claim 1. A heat insulated receptacle comprising an outer shell having a shouldered neck portion with an annular enlargement below said shoulder forming an annular seat, an.

inner shell and a connection between said inner and outer shells having its outer end seated in said annular enlargement beneath tliefihoulder in the neck portion of the outer s 1e an outer shell having ahead at the mouth thereof, a shoulder in the neck portion below said head and an annular enlargement beneath said shoulder, an inner shell and a neck-piece connecting the inner and outer annular enlargement beneath said shoulder,

aninner shell and a neck-piece connected at its inner end with the inner shell and seated at its outer end in the annular enlargement aforesaid and with its inner surface substantially flush with the inner surface of the neck portion of the outer shell.

ture.

GEORGE o. aurnouj 2. A heat insulated receptacle comprising In testimony whereof I affix my signa-i .shells and seated in the annular enlarge- I

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