Look for a date of manufacture, job number, plant location and various other information. Phillip Woolgar has been a reporter since 2008 in communities throughout western Canada.
His work has appeared in Canadian national publications such as the "Globe and Mail" and the "Vancouver Sun." In 2009, he received second-place recognition in the Alberta Weekly Newspaper Association's Excellence in Arts and Culture writing category.
San Francisco man Julius Landsberger patented metal lids fastened onto a composition gasket.
Kerr used the patents to create a revelation in preserving food. Jars not made by machines were free blown; no mold was used.
On the side there are four lines of text: "Kerr," in script, "SELF SEALING," underlined small letters and in quotes, "TRADE MARK REG." in a ribbon finial, and then "MASON." The bottom of the jar is covered with small glass bumps and has a slightly raised "AHK" "31" and "505" around the center. This clear glass jar is machine made, round, and has "Kerr" written in raised glass cursive letters above "SELF SEALING" written in block letters.
"TRADE MARK REG." is in raised glass letters in a trapezoid that comes off of the "G" in "SEALING." "PAT. 31, 1915" is in small block letters above "MASON," which is in tall block letters parallel to the base of the jar, about 1" up from the base.
The Kerr glass plants were bought by Ball Corporation in 1992, (Ball later left the glass container business altogether, and sold the plants to Saint-Gobain Containers, now Verallia).
But when I saw the labels on some of the boxes, I became kinda excited – don’t they seem rather old to you? Mason jar used by Hermenegilda Uberuaga in the boardinghouse at 607 Grove Street in Boise, Idaho.This clear glass jar square jar with rounded corners is machine made. Mason jar used by Hermenegilda Uberuaga in the boardinghouse at 607 Grove Street in Boise, Idaho.On the bottom of the jar a "4" appears in slightly raised glass. Mason jar used by Hermenegilda Uberuaga in the boardinghouse at 607 Grove Street in Boise, Idaho.Dating the Logo Locating Other Identifying Marks Knowing What Marks and Labels to Disregard Community Q&A Ball mason jars are a type of home canning jar made by the Ball Corporation.