DE338299C - Vacuum tester for jars - Google Patents

Vacuum tester for jars

Info

Publication number
DE338299C
DE338299C DENDAT338299D DE338299DD DE338299C DE 338299 C DE338299 C DE 338299C DE NDAT338299 D DENDAT338299 D DE NDAT338299D DE 338299D D DE338299D D DE 338299DD DE 338299 C DE338299 C DE 338299C
Authority
DE
Germany
Prior art keywords
jars
vacuum
lid
vacuum tester
tester
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DENDAT338299D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAX STEFFEN
Original Assignee
MAX STEFFEN
Publication date
Application granted granted Critical
Publication of DE338299C publication Critical patent/DE338299C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Description

Vakuumprüfer für Einkochgläser. Die Erfindung betrifft die Anbringung einer Vorriclhtung an Deckeln von Einkochgläsern zur Prüfung des Vakuums. Sie besteht in einem elektrischen Glühdraht, welcher bei ,dichtem Deckel infolge des im Glase herrschenden Vakuums hell leuchtet, sobald man den elektrischen Strom hindurchsendet, während bei undichtem Deckel der Draht sofort durchbrennt.Vacuum tester for jars. The invention relates to attachment a device on the lids of jars for checking the vacuum. she consists in an electric filament, which, when the lid is tight, as a result of the in the glass prevailing vacuum shines brightly as soon as the electric current is sent through, while if the lid is leaky, the wire will burn through immediately.

Die Zeichnung stellt im Schnitt ein Ausführungsbeispiel desErfindungsgegenstarnd,es dar. z ist der Deckel, 2 und 3 sind zwei dicht in den Deckel eingesetzte Metallschrauben, an denen leicht auswechselbar in beliebiger Weise die beiden Enden eines Glühdrahtes q. innen befestigt sind. Außen können die Pole 5 und 6 der Batterie 7 -auf dile Köpfe der Schrauben gedrückt werden, um die Dichte des Deckels auszuprobieren.The drawing represents, in section, an embodiment of the present invention z is the cover, 2 and 3 are two metal screws tightly inserted into the cover, on which the two ends of a filament can be easily exchanged in any way q. are attached inside. On the outside, poles 5 and 6 of the battery 7 can be dile Heads of the screws are pressed to try out the tightness of the lid.

Claims (1)

' PATENT-ANsPRUcH: Vakuumprüfer für Einkochgläser, gekennzeichnet durch einen innen am Deckel angebrachten Glühdraht (q.), der derart ausgestaltet ist, daß ihm von außen durch eine beliebige Stromquelle, beispielsweise durch eine Batterie (7), Strom zugeführt werden kann, so d@aß der Glühdraht bei ,dichtem Deckel im Vakuum des Glases hell erglüht, während; er bei undichtem Deckel sofort-durchbrennt.'' PATENT CLAIM: Vacuum tester for preserving jars, marked by means of a glow wire (q.) attached to the inside of the lid, which is designed in this way is that him from the outside by any power source, for example by a Battery (7), current can be supplied, so that the filament with a tight lid Glows brightly in the vacuum of the glass, while; it burns through immediately if the lid leaks.
DENDAT338299D Vacuum tester for jars Expired DE338299C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE338299T

Publications (1)

Publication Number Publication Date
DE338299C true DE338299C (en) 1921-08-20

Family

ID=6222403

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT338299D Expired DE338299C (en) Vacuum tester for jars

Country Status (1)

Country Link
DE (1) DE338299C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855531A (en) * 1971-07-01 1974-12-17 Lever Brothers Ltd Method of testing the seals of food containers and containers suitable therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855531A (en) * 1971-07-01 1974-12-17 Lever Brothers Ltd Method of testing the seals of food containers and containers suitable therefor

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