Hay Rake Types and Their Evolution in Agriculture
The hay rake is a fundamental agricultural tool used to gather cut hay into windrows—long, neat rows of hay that make it easier to collect and load. From humble beginnings as simple tree branches to the sophisticated machinery used today, the evolution of the hay rake mirrors the broader shift in farming from manual human labor to animal power and, eventually, full mechanization.
Key Facts
- Hay rakes can be hand tools, animal-drawn, or tractor-mechanized.
- The primary purpose of a hay rake is to organize cut hay into windrows for efficient collection.
- Evolution progressed from simple wooden hand rakes to complex gear-driven and rotary systems.
- Modern variations include wheel rakes and rotary rakes, which offer different levels of efficiency and gentleness on the crop.
The Era of Manual and Animal Labor
In the 19th and early 20th centuries, wooden hand rakes with wooden teeth were common. While larger than a standard garden rake, these tools relied entirely on human strength. As agriculture shifted toward animal labor, the dump rake became a staple. This was a wide, two-wheeled implement featuring curved steel or iron teeth.
Operating a dump rake required a specific technique: the operator sat atop the machine and used a lever to lift and drop the teeth. To form a windrow, the operator had to move perpendicular to the row, raising the rake, turning around, and dropping the teeth to rake the hay back and forth.
[A 19th-century hand-tool hay rake]
In some regions, a sweep rake—which could be drawn by horses or mounted on a tractor—was used following the dump rake to pick up the windrowed hay and load it onto wagons.
Mechanization and the Side Delivery Rake
To solve the inefficiency of the back-and-forth motion required by dump rakes, engineers developed the side delivery rake. This machine utilized a gear-driven or chain-driven reel mounted at approximately a 45-degree angle to the windrow.
As the rake moved longitudinally across the field, it pushed the hay to one side. This innovation eliminated the need to constantly raise and lower the teeth, allowing for the creation of the continuous spiraling windrows characteristic of mid-20th-century farms. Later iterations improved this design with higher frames and more severe transverse angles.
[A late version of the side delivery rake]
Modern Raking Technologies
As farming continued to evolve, wheel rakes (or star wheel rakes) were introduced. These consist of five, six, seven, or more spring-tooth wheels mounted on a frame. These wheels are ground-driven, meaning they operate through free-wheeling contact as the implement is pulled forward.
Wheel rakes were marketed as a superior alternative to side delivery rakes because they were mechanically simpler, more cost-effective to operate, and gentler on the hay.
[A wheel rake]
In contemporary agriculture, the rotary rake has become common, particularly in Europe, though it is seen less frequently in North America. Other specialized equipment includes the pick-up belt rake (also known as a continuous belt merger) and the wheel-finger rake, the latter of which is often used to prepare hay or straw for a baler.
[A rotary rake]
[A pick-up belt rake ("continuous belt merger")]
[Wheel-finger rake (in folded transport position) for raking hay or straw into windrows for the baler]
Comparison of Hay Rake Types
| Rake Type | Drive Mechanism | Primary Characteristic | Operational Style |
|---|---|---|---|
| Dump Rake | Manual Lever | Curved steel/iron teeth | Back-and-forth perpendicular motion |
| Side Delivery | Gear or Chain | 45-degree reel | Continuous longitudinal movement |
| Wheel Rake | Ground-driven | Spring-tooth wheels | Simple, gentle on hay |
| Rotary Rake | Mechanized | Rotating arms | Common in European farming |
Frequently Asked Questions
What is a windrow?
A windrow is a long row of cut hay gathered by a rake, which organizes the material for easier collection and loading.
How does a side delivery rake differ from a dump rake?
Unlike the dump rake, which requires the operator to move back and forth and manually lift the teeth, the side delivery rake uses a driven reel to push hay to the side while moving continuously forward.
What are the advantages of a wheel rake?
Wheel rakes are generally considered mechanically simpler, cheaper to operate, and less damaging to the hay than side delivery models.
Where are rotary rakes most commonly used?
Rotary rakes are currently in common use across Europe, though they are also used to a lesser extent in the United States and Canada.
What was the earliest form of a hay rake?
The earliest hay rakes were simple tree branches, which eventually evolved into larger wooden hand rakes with wooden teeth during the 19th century.