Essington, PA -- (SBWire) -- 11/26/2019 --Philadelphia Security Products is pleased to announce it has a wide variety of combination padlocks for sale online. When looking to buy master locks or any other security hardware for some of the best prices on the Internet, Philadelphia Security Products will not disappoint. Its expert team of security professionals have even recently summarized the history of the padlock from its invention by The Romans to today.

For several thousand years, padlocks have helped to defend against theft, vandalism, and sabotage across the globe. During their journey through the ages, different civilizations have tweaked and improved their design, usability, and components. Today, padlocks are created on an industrial scale in numerous sizes, types, and with varying levels of security, as regulated by governments all around the world.

The Romans invented the original iron model locks with steel bolts holding them closed around 500 BC. They created metal rods bent at 90 degrees to work as efficient keys. Throughout the Dark and Middle ages, two types of padlocks became popular in Europe. Smokehouse locks were invented in England, using wrought iron sheet and lever mechanisms to protect food supplies. Across Europe, in Slavic areas, padlocks with helical keys to unlock a bolt against a spring were used. Although these types of padlocks were popular, they all had their faults or weaknesses.

Various technological advancements continued until the Yale family implemented the "cartridge" style padlock that uses a sliding pin tumbler mechanism (a design that is still popular today.) In the 1920s, Harry Soref and his Master Lock company introduced the laminated padlock, with die casting entering production in the 1930s.

For additional information about the history of padlocks or to purchase products, please visit https://allpadlocks.com/.

About Philadelphia Security Products, Inc.
Philadelphia Security Products, Inc. is an industrial distributor and wholesaler that sells leading security hardware for manufacturers including Abus Lock, American Lock, and Master Lock. They provide their customers with all types of security hardware such as padlocks, file cabinet lock bars, safety lockout padlocks and devices, security chain, hasps, and much more. In 1985, PSPI created the Flexguard Security System which is anti-theft security hardware for computers and small electronic devices. On top of the friendly and efficient customer service they provide, this company offers competitive prices in Southeast Pennsylvania, as well as all of North America. To learn more, visit https://allpadlocks.com/.