Eastern Alloys has sold a smaller "Margash" ingot since the mid 1960's, and it is a product that we continue to sell today to our zinc die casting customers with smaller diecasting machines. Although Eastern has been selling the Margash bar for decades, the use of the name Margash precedes us. This term comes from a different (yet related) industry than zinc diecasting, but our industries share the same root. This article is intended to highlight our Margash (and standard ingot) design, but also shed some light on history of the Margash name, and where it came from.
The term Margash comes from the Margach Manufacturing Company, based in New York City, and its founder Andrew L. Margach. In the early 1900's he was one of the first to patent and introduce a mechanical process of lowering metal ingots into a molten bath used in the Linotype industry. This "Margach Feeder", as shown on the right, was a novel technology of the time, eliminating process fluctuations in temperature and improved safety. There is also evidence in their product catalogues that the Margach Manufacturing Company introduced a new ingot design which included "claws" that would conveniently fit on their "Margach feeder".
Since the days of the Margach Manufacturing Company, improvements in feed design have continued. Today various processes of introducing alloy into die casting machine are available. In some cases, molten zinc alloy is introduced to the die casting machine via a "launder" system, where molten metal flows through a trough directly from a break down furnace. However, all of these mechanical feed systems have their roots based on Andrew L Margach's original design of the Margach Feeder.
Today, Eastern Alloys still uses the term "Margash" (note the "C" has been changed to "S", but we have not determined why this happened) to describe our smaller bar with a hook. This design is simple, yet still very effective. Eastern's current Margash design includes a notch in the middle of the bar to allow the die casting machine operator to break the bar in half if needed, and "claws" at the end to hang the bar on a bar feeder that is still used in manufacturing today. (See an example of the Margash bar here: eazall.com/zinc-die-casting-alloys#Shapes and Sizes). Due to the acceptance of this Margash design by our customers, in 1997 Eastern also designed its larger bars with a similar hook, so that these bars can also be hung from a bar feeder on larger die casting machines with bar feeders, also shown here: eazall.com/zinc-die-casting-alloys#Shapes and Sizes.
To learn more about the history of bar feeders, and view the orignial "Margach Feeder" product catalogues and patent, please visit: http://www.circuitousroot.com/artifice/letters/press/common/feeders/margach/index.html.