Table of Contents
What is a gate mark on cast iron What does it mean?
Cast iron is made with a sand mold in which liquid iron needs to be poured into it (or injected into the mold.) The liquid iron then hardens and the mold is removed from around it. In the 1800s the iron was poured in via a line on the bottom of the mold which left the line, or gate mark, on the iron once it hardened.
When did BSR stop making cast iron?
BSR (in the form of A & B Foundry) entered bankruptcy in January, 1993.”
When did BSR cast iron go out of business?
1989 – BSR foundry closes, DISA machines sold to another company who continues to produce cookware for BSR. 1991 – Lodge also produces some products including Sportman Grill for BSR. 1993 – Company files bankruptcy, relinquishes patterns to Lodge to satisfy debt.
How can you tell the difference between cast-iron and cast steel?
Cast Iron vs Cast Steel
| Cast Iron | Cast Steel |
|---|---|
| Cast iron have very good vibration damping properties. | In terms of vibration damping, cast steel is inferrior to cast iron. |
| More of Brittle Nature. | Ductile nature. |
| Machinability lower. | Good machinability. |
| Weldability is lower as compared to cast steel | Good Weldability |
What is a sprue mark?
GLOSSARY. A small raised spot or depression left on the surface of an injection or transfer molded part. The sprues are the locations at which the elastomer enters into the mold cavity. Also called”gate mark”
How can you tell the difference between mild steel and cast-iron?
Mild steel has a stringy structure, while the structure of the cast-iron is granular and crystalline with a whitish or grayish tinge. From a quality and strength point of view, mild steel has less quality when contrasted with cast iron. But mild steel isn’t weak, not normal for cast iron.
Do they still make Griswold cast iron?
For many years the company had a world-wide reputation for high-quality cast-iron cookware. Today, Griswold pieces are collector’s items….Griswold Manufacturing.
| Industry | Cast-iron cookware |
|---|---|
| Fate | Acquired |
| Successor | McGraw-Edison |
| Headquarters | Erie, Pennsylvania , United States |
How old is my Wagner Ware?
How to Date Wagner Cast Iron Cookware
- Turn over your cookware so the bottom is facing up. Make note of all markings on the bottom of the pan and their location.
- Examine the construction of the pan.
- Consult a reputable guidebook.
- Post pictures of your skillet on the forum for Wagner and Griswold collectors.
How do I identify Bir Birmingham Stove & Range cast iron pans?
Birmingham Stove & Range never put an identifying logo or manufacturer mark on their cast iron pans. However, there are several unique traits to these pans that allow them to be easily identified. BS&R cast iron pans are very heavy, and they have a weight and a heft similar to modern-day cast iron pans from Lodge.
What makes vintage cast iron so special?
Part of the allure of vintage cast iron, besides the fineness of the castings, are the unique trademarks and detail work the foundries of the past cast into each piece they produced. Pattern makers were both skilled craftsmen and artists, in some cases even carving small, unique figures (“maker’s marks”) into their work to identify themselves.
What is a heat ring on a cast iron skillet?
All cast iron skillets from Birmingham Stove & Range, up until the 1970s, were made with a heat ring: a circular ridge on the underside of the pan. BS&R pans in particular had a very thick and distinctive heat ring. Also, as stated previously, each of these pans have the teardrop-shaped scoop on the underside of the handle.
Is there such a thing as ‘unmarked cast iron’?
There are instances, however, where the parentage of some 20th century cast iron ware seems mysteriously unclear. Much of what’s known to collectors as “unmarked” cast iron has quite a bit to do with marketing.