{"id":3894,"date":"2026-09-20T19:13:15","date_gmt":"2026-09-20T23:13:15","guid":{"rendered":"https:\/\/patersonhistory.com\/?page_id=3894"},"modified":"2026-09-20T19:13:17","modified_gmt":"2026-09-20T23:13:17","slug":"how-the-raceways-powered-the-mills","status":"publish","type":"page","link":"https:\/\/patersonhistory.com\/index.php\/how-the-raceways-powered-the-mills\/","title":{"rendered":"How the Raceways Powered the Mills"},"content":{"rendered":"\n
\n
\n
\n
\n

Paterson’s raceway system was essentially the power grid of the city’s early industrial age<\/strong>. Long before electric motors and modern utility companies, the raceways carried the energy of the Passaic River directly to the factories that surrounded the Great Falls.<\/p>\n

The system transformed the natural force of falling water into mechanical power that could operate hundreds of machines.<\/p>\n

Understanding how the system worked explains why Paterson became one of America’s great manufacturing centers.<\/p>\n

\n

From River to Factory<\/h2>\n

The process began with the Passaic River<\/strong>.<\/p>\n

Above the Great Falls, engineers constructed dams and diversion structures that raised and controlled the water level. A portion of the river’s flow could then be directed into the raceway system.<\/p>\n

The water entered the Upper Raceway<\/strong>, where it was carried through the industrial district.<\/p>\n

From there, water could be directed to individual factories through gates and channels.<\/p>\n

The basic process was:<\/p>\n

Passaic River<\/strong><\/p>\n

\u2193<\/p>\n

Dam<\/strong><\/p>\n

\u2193<\/p>\n

Upper Raceway<\/strong><\/p>\n

\u2193<\/p>\n

Headgate<\/strong><\/p>\n

\u2193<\/p>\n

Wheel Pit<\/strong><\/p>\n

\u2193<\/p>\n

Waterwheel or Turbine<\/strong><\/p>\n

\u2193<\/p>\n

Factory Machinery<\/strong><\/p>\n

\u2193<\/p>\n

Tailrace<\/strong><\/p>\n

\u2193<\/p>\n

Middle \/ Lower Raceway<\/strong><\/p>\n

\u2193<\/p>\n

Passaic River<\/strong><\/p>\n

The entire system was designed to control the movement and elevation of the water.<\/p>\n

\n

Why Elevation Was Important<\/h1>\n

The secret to Paterson’s waterpower was elevation<\/strong>.<\/p>\n

Water stored or flowing at a higher elevation possesses potential energy. When that water is allowed to descend, its energy can be converted into mechanical work.<\/p>\n

The Great Falls provided a natural elevation difference of approximately 77 feet<\/strong>.<\/p>\n

The engineers therefore did not simply allow the river to plunge over the Falls.<\/p>\n

They captured some of the water before<\/strong> it reached the Falls and directed it through raceways.<\/p>\n

This allowed manufacturers to control where and how the water descended.<\/p>\n

\n

The Headgate<\/h1>\n

Before water entered a factory’s power system, it normally passed through a headgate<\/strong>.<\/p>\n

The headgate functioned like a valve.<\/p>\n

Opening the gate allowed more water to enter.<\/p>\n

Closing it reduced or stopped the flow.<\/p>\n

This gave the mill operator control over the amount of water available to the machinery.<\/p>\n

The headgate was also important when machinery needed to be stopped or repaired.<\/p>\n

\n

The Wheel Pit<\/h1>\n

After passing through the headgate, the water was directed toward a wheel pit<\/strong>.<\/p>\n

This was where the energy of the moving water was converted into mechanical motion.<\/p>\n

The earliest mills generally used large waterwheels<\/strong>.<\/p>\n

Depending upon the design, water could act upon the wheel from above, below or at another appropriate point.<\/p>\n

The wheel began turning as water passed through the system.<\/p>\n

That rotation was the key to powering the factory.<\/p>\n

\n

From Waterwheel to Machinery<\/h1>\n

The waterwheel did not usually operate each machine directly.<\/p>\n

Instead, its rotating shaft connected to a system of gears, pulleys, belts and line shafts<\/strong>.<\/p>\n

The main shaft could extend through the factory.<\/p>\n

Smaller pulleys and belts connected individual machines to the main power shaft.<\/p>\n

Consequently, a single waterwheel could operate many machines simultaneously.<\/p>\n

The sequence was:<\/p>\n

Water<\/strong><\/p>\n

\u2192<\/p>\n

Waterwheel<\/strong><\/p>\n

\u2192<\/p>\n

Main Shaft<\/strong><\/p>\n

\u2192<\/p>\n

Gears & Pulleys<\/strong><\/p>\n

\u2192<\/p>\n

Line Shafts<\/strong><\/p>\n

\u2192<\/p>\n

Belts<\/strong><\/p>\n

\u2192<\/p>\n

Factory Machines<\/strong><\/p>\n

This was the mechanical equivalent of an electrical distribution system.<\/p>\n

\n

The Factory Becomes a Machine<\/h1>\n

The raceway therefore became an integral part of the mill building itself.<\/p>\n

A typical nineteenth-century factory could be designed around the location of its power source.<\/p>\n

The wheelhouse or wheel pit was positioned beside or beneath the factory.<\/p>\n

The power shaft entered the building.<\/p>\n

Inside, the shaft distributed mechanical energy to the manufacturing equipment.<\/p>\n

The architecture of the factory was consequently shaped by the movement of water and machinery.<\/p>\n

\n

What Did the Mills Manufacture?<\/h1>\n

The waterpower system eventually supported a remarkable variety of industries.<\/p>\n

Paterson became known for manufacturing:<\/p>\n