US2127785A

US2127785A - Closure device

Info

Publication number: US2127785A
Application number: US24969A
Authority: US
Inventors: Schimpf Franz
Original assignee: HUGO SCHNEIDER AG
Current assignee: HUGO SCHNEIDER AG
Priority date: 1934-06-27
Filing date: 1935-06-04
Publication date: 1938-08-23
Anticipated expiration: 1955-08-23

Description

F. SCHlM PF CLOSURE DEVICE Filed June 4, 1955 2 Sheets-Sheet 1 of W;

' lrvvem F. SCHIMPF CLOSURE DEVICE Aug. 23, 1938.

Filed June 4, 1955 2 Sheets-Sheet 2 2 samw a Patented Aug. 23, 1938 UNITE ST'l'fl rarer; OFFICE.

Hugo Schneider Aktiengesellschaft,

Germany Leipzig,

Application June 4, 1935, Serial No. 24,969 In Germany June 27, 1934 Claims.

For double-walled evacuated insulating flasks of glass, use has already been made for closing the orifice of the flask of devices which are also usual in the case of beer or mineral-water bottles 5 and which consist of a hinged closure member,

closing in a fluid-tight manner, and a detachable wire clip hold-down device or the like for hand operation. In the known constructions, the hold-down device is pivoted to the glass flask itself by its wire ends. This method of attachment has the disadvantage that it gives rise to breakage of the glass. As a distinction therefrom and inter alia in order to avoid the risk of breakage of the glass, the wire clip hold-down device is detachably or undetachably hingedly connected directly or indirectly to the upper part of the casing of the insulating flask.

Figure 1 of the accompanying drawings is a sectional drawing of an insulating flask and shows a constructional example of such a closure.

Figure 2 shows the upper part of the insulating flask shown in Figure 1 viewed from below.

Figure 3 shows in section the upper part of an insulating flask with another constructional example of the closure.

Figure 4 shows the upper part of the insulating flask shown in Fig. 3 viewed from below.

Figures 5 and 6 show in section and elevation, respectively, a further constructional form of the closure.

Figures '7 and 8 show in section and elevation, respectively, another constructional example.

Referring to Figs. 1 and 2, on the upper part I of the casing 2 of the insulating flask are holding lugs 3 which are cut out of the wall of the upper part and bent up, and on which are hinged the ends of the wire clip hold-down device.

In the case of the example shown in Figs. 3 40 and 4, the ends of the wire clip hold-down device are connected indirectly and hingedly to the upper part of the insulating flask casing. The said ends engage holding lugs. 3 of a supporting ring 4 disposed on the inside of the upper part,

45 which ring in the constructional example is in two parts and consists of wire loops 4 secured in position by an edge beading 5 of the upper part I. The holding lugs 3 are bent out of the same wire as the loops and are passed from below 50 outwardly through holes in the wall of the upper part.

In the constructional example shown in Figs. 5 and 6, the ends of the wire clip hold-down device are again connected hingedly and indirectly to the upper part of the insulating flask casing, but they engage holding lugs 3 of a supporting ring 6 screwed over the upper part I. In the constructional example shown in Figures 7 and 8 the indirect connection of the hold-down device is effected by means of a wire loop provided with holding lugs 3 and acting as a supporting ring, which wire loop rests in an external annular groove provided on the upper edge of the upper part i of the insulating flask casing. The wire loop Q may be detachable or undetach- 0 able. It may also be made of a sheet metal ring or the like.

A further improvement over the known devices Y mentioned at the commencement consists in the diiferences in length of the wire clip of the 15 closure, which impair or destroy the effectiveness of the closure, being rendered ineffective by using for the insulating flask a resilient bottom support device known per so. In this case, the wire clip hold-down device or the like is so 20 dimensioned that it still presses down the flask and the supporting device even if dilferences in length of the wire clip of the closure are present to a certain extent.

In Figure 1 such a construction is shown by way of example. The resilient bottom supporting device consists of the cork 1 and resilient wire spiral 8.

In the constructional example, the closure member 9 consists of porcelain. The shape and the material of the closure member may also be selected differently, however, more particularly an extensive thermo-protective action may be taken into consideration.

For the hold-down device, sheet metal bands or the like may be employed instead of the wires shown.

What I claim is:

1. The combination of a glass vacuum flask, an external casing for said glass flask having in the lower part thereof a resilient bottom supporting device for the flask and having in the upper part a reduced portion'for receiving a drinking cup and a closure member for closing the flask in a fluid-tight manner with a hinge 5 connection for connecting the closure member to said reduced portion of the external casing and a manually actuatable wire clip hold down device on said reduced portion of the external 0 casing for securing the closure member in the operative position said hinge connection and wire clip hold down device being connected to the reduced portion of the external casing between the periphery and the centre thereof, so as not to project beyond the periphery of said reduced portion.

2. The combination of a glass vacuum flask, an external casing for said glass flask having in the lower part thereof a resilient bottom supporting device for the flask and having in the upper part a reduced portion for receiving a drinking cup and a closure member for closing the flask in a fluid-tight manner with a detachable hinge connection for connecting the closure member to said reduced portion of the external casing and a manually actuatable wire clip hold down device on said reduced portion of the external casing for securing the closure member in the operative position said hinge connection and wire clip hold down device being connected to the reduced portion of the external casing between the periphery and the centre thereof, so as not to project beyond the periphery of said reduced portion.

3. The combination of a glass vacuum flask, an external casing for said glass flask having in the lower part thereof a resilient bottom supporting device for the flask and having in the upper part a reduced portion for receiving a drinking cup and a closure member for closing the flask in a fluid-tight manner with a nondetachable hinge connection for connecting the closure member to said reduced portion of the external casing and a manually actuatable wire clip hold down device on said reduced portion of the external casing for securing the closure member in the operative position said hinge connection and wire clip hold down device being connected to the reduced portion of the external casing between the periphery and the centre thereof, so as not to project beyond the periphery of said reduced portion.

4. The combination of a glass vacuum flask, an external casing for said glass flask and a closure device for closing the flask in a fluid-tight manner, with a wire ring mounted on the upper part of the external casing, a hinge connection for connecting the closure member with the upper part of the external casing and a manually actuatable wire clip hold down device for securing the closure member in the operative position, said wire ring having lugs thereon for the attachment of the hinge connection to the upper part of the external casing and the hold down device for the closure member, said external casing having in the lower part thereof a resilient bottom supporting device for the flask adapted to exert yielding pressure between the flask and the closure member in the operative position of the wire clip hold down device.

5. The combination of a glass vacuum flask, an external casing for said glass flask having in the lower part thereof a resilient bottom supporting device for the flask, a closure member for closing the flask orifice in a fluid-tight manner, a hinge connection for connecting the closure member with the upper part of the external casing, a manually actuatable wire clip hold down device on the upper part of the external casing for securing the closure member in the operative position and a supporting ring having lugs thereon for the attachment thereto of the hinge connection and the wire clip hold down device for the closure member, said supporting ring and the upper part of the external casing having oo-operating screw threads thereon for securing the supporting ring to the upper part of the external casing.

FRANZ SCHIMPF.