The Halligan bar origin, also known as the Halligan tool, is a versatile firefighting and forcible entry tool that has a fascinating history. It was developed in the mid-20th century by Hugh Halligan, a Deputy Chief of the New York City Fire Department (FDNY). Here's a brief overview of its history:

1. Development: In the 1940s, Chief Halligan recognized the need for a multi-purpose tool that could help firefighters gain access to buildings quickly and efficiently. He collaborated with blacksmith Peter Clarke to create a tool that combined several functions in one, making it easier for firefighters to perform their duties.

2. Design: The Halligan bar typically consists of three main components - a fork, a pointed adz (a cutting and prying edge), and a flathead. This design allows it to be used for a wide range of tasks, such as prying open doors, breaching walls, breaking windows, and more.

3. Versatility: The Halligan bar quickly gained popularity within the FDNY and among firefighters nationwide due to its versatility. It became an essential tool, part of  the 'Irons', for forcible entry and search-and-rescue operations, helping save lives and property.

4. Standardization: Over time, the Halligan bar's design was standardized, and it became a staple tool in firefighting equipment. It is now often paired with a flat-headed axe, creating the "irons" combination, which is indispensable for firefighters.

5. Legacy: Hugh Halligan's invention has had a lasting impact on firefighting techniques and tools. It is widely used by firefighters and emergency responders around the world to this day, highlighting the enduring legacy of his innovative design.

The Halligan bar's development by Chief Halligan has revolutionized the way firefighters approach various aspects of their work, making it an iconic tool in the world of firefighting.