Sorry, dating vintage kerr mason jars not absolutely

These humble glass pieces were designed for putting up fruits and vegetables in the days before refrigeration. Here are some of the most valuable finds from the s to the s, when hundreds of companies were vying for a spot on America's shelves:. This unmarked, mid- s model featured cork, which did little to preserve its contents. The unique topper makes it of note today. Issued only from to , this jar could double as a dispenser for a coffee grinder. The short production window gives it considerable cache.

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Kerr used the patents to create a revelation in preserving food. Kerr, increated a flat metal disc lid to fit onto a Mason jar to use with other canning jars.

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Inspect the jar from bottom to top. Look for the Kerr name, which is embossed onto the surface.

Kerr Glass Manufacturing Corporation, Glass company, fruit jars, vintage and antique glass containers for canning, background, information, history, info. I just got 2 cases if your wide mouth Kerr half pint jars and there was a piece broken off the top rim and it cut me. I took pictures of the jar and the lid. May 13,   Check the jar from top to bottom. The Kerr name will be embossed on the glass. There are some general guidelines to approximate the date of a vintage Kerr jar between and The finish on a fruit jar can tell you roughly about the date it was made. If the finish on the base is smooth on the lip of the jar, it usually means the jar was. Instantly recognizable by avid vintage-lovers, the Nov. 30th patent date appears on literally thousands of canning jars produced between Mason wasn't the only manufacturer to add this patent date to his jars, hence its vast proliferation. John Mason invented and patented the process for cutting a thread onto the lip of glass.

Observe the finish of the jar. If the base is smooth at the jar's lip, it was made by a machine after A rough base means the jar was made between and Look for mold seams.

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Jars not made by machines were free blown; no mold was used. A number is usually embossed on the jar's bottom, dubbed a "mold number.

Fruit jar ID, auction tips & values. Amber, auction, Intro Jar collecting Midget jar, lugged lid.

A mold seam means the jar is post Look for small scars at the bottom and look to see if the design is more modern. This means it would be post, during days of more efficient machines.

Aug 3, - Kerr self-sealing jars and the Kerr Economy were created in Alexander H. Kerr also founded the Hermetic Fruit Jar Company in the same year. San Francisco man Julius Landsberger patented metal lids fastened onto a composition gasket. Kerr used the patents to create a revelation in preserving food. Kerr, in ,. Aug 28, - Kerr self-sealing jars and the Kerr Economy were created in Alexander H. Kerr also founded the Hermetic Fruit Jar Company in the same year. San Francisco man Julius Landsberger patented metal lids fastened onto a composition gasket. Kerr used the patents to create a revelation in preserving food. Kerr, in ,. Dating Old Canning Jars. I have a lot of old, vintage canning jars. I love the history they carry as well as their charm and character. While it is okay to use them for storage or even as a refrigerator container, you should never process old jars in a canner. The old glass can't take the temperature change and might shatter - which would.

InKerr made a smaller, flat metal disc lid. It fit on top of a Mason jar and could be used with other canning jars. Check the jar from top to bottom.

Aug 25,   Released in , this item once boasted a rubber lid. (When heated, it would melt to create a seal.) Missing the topper cuts the price in half. VALUE: $ The lid of this s jar (made in Canada) has a metal band with a glass top-the result of the government deem- ing it unsanitary for metal to directly touch canned foods. VALUE: $Author: Joshua Lyon. Alexander H. Kerr also founded the Hermetic Fruit Jar Company in the same year. San Francisco man Julius Landsberger patented metal lids fastened onto a composition gasket. Kerr used the patents to create a revelation in preserving food. Kerr, in , created a flat metal disc lid to fit onto a Mason jar to use with other canning jars. Jul 19,   Ball mason jars are a type of home canning jar made by the Ball Corporation. The company started making mason jars back in , and many people today still use these for canning, or collect the jars as a hobby. There are many ways to date old Ball mason jars, and one of the easiest is to look at the logo. Along with the logo, you can sometimes 91%.

The Kerr name will be embossed on the glass. There are some general guidelines to approximate the date of a vintage Kerr jar between and The finish on a fruit jar can tell you roughly about the date it was made. If the finish on the base is smooth on the lip of the jar, it usually means the jar was machine-made after If the jar is rough and jagged at the base, it was machine-made between the early s to Check for mould seams.

Jars that were not machine-made have other characteristics. Jars that were free blown without the use of a mould were finished by hand.

These jars typically have a number embossed on the bottom called "mould numbers. If there is a mould seam it means the jar was made after



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