Delta No. 37-205 6-Inch Jointer
1. Introduction
The Delta No. 37-205 6-Inch Jointer represents one of the earliest and most finely crafted jointers in Delta’s history. Produced in the 1930s and early 1940s, this machine established Delta as a leader in precision woodworking tools. Its heavy-duty cast-iron construction, smooth cutterhead, and accurate adjustments made it a professional-grade jointer in a compact footprint — ideal for both cabinet shops and serious home craftsmen.
Today, the Delta No. 37-205 is highly sought after by collectors and restorers as one of the foundational designs that defined the “Delta look” and set the stage for later models like the 37-220 and 37-315.
2. History of the Delta No. 205 Jointer
Introduced in the mid-1930s, the No. 37-205 was one of the first 6-inch jointers to carry the Delta name before Rockwell’s acquisition of the company. It evolved from the smaller 4-inch jointers (such as the No. 37-110) and quickly became a flagship product in Delta’s growing line of precision woodworking equipment.
The No. 205 featured longer tables, a wider cutterhead, and improved fence design compared to earlier jointers, making it suitable for professional cabinetmakers. By the time the U.S. entered World War II, the No. 37-205 had earned a reputation for accuracy and ruggedness — traits that would influence all subsequent Delta jointer designs.
In the late 1940s, Delta’s model numbering system transitioned to the “37-xxx” format, and the No. 37-205 was eventually replaced by the 37-220 Long Bed Jointer, carrying forward its design legacy.
3. Manufacturer Background: Delta Specialty Company
The Delta Specialty Company, founded by Herbert Tautz in 1919 in Milwaukee, Wisconsin, began as a small operation producing tool attachments and accessories. By the late 1920s, Delta had become a pioneer in precision benchtop woodworking machinery.
Delta’s machines — especially the early jointers, drill presses, and lathes — were prized for their balance of affordability and professional accuracy. The No. 205 exemplified the company’s philosophy: to create durable, precise machines for serious craftsmen and small shops without the industrial bulk or cost of factory equipment.
This design ethos cemented Delta’s place as the most trusted name in American woodworking machinery for much of the 20th century.
4. Design and Features of the No. 37-205 Jointer
The Delta No. 37-205 6-Inch Jointer was built to high standards of engineering and finish quality. Its robust design and smooth operation reflected Delta’s early commitment to excellence. Notable features include:
- 6-Inch Cutterhead Width – Capable of handling larger stock for cabinetry and furniture making.
- Precision-Ground Cast-Iron Tables – Long and flat for true, accurate jointing.
- Three-Knife Cutterhead – Provides a fine, even finish on hardwood and softwood alike.
- Cast-Iron Fence with Tilt Mechanism – Tilts 45° inward and outward for bevel work.
- Belt-Driven Motor System – Typically powered by a ½ to ¾ HP motor mounted beneath or beside the jointer.
- Adjustable Infeed and Outfeed Tables – Controlled via precision handwheels with lock mechanisms.
- Classic “Pork-Chop” Guard – Spring-loaded cutterhead guard typical of early Delta designs.
- Cast-Iron Base or Open Stand – Heavy, stable platform minimizing vibration.
With its elegant castings, balanced cutterhead, and silky-smooth operation, the No. 37-205 was regarded as one of the best small professional jointers of its day.
5. Usage and Applications
The Delta No. 37-205 was designed for professional cabinetmakers, small production shops, and advanced home craftsmen. Its 6-inch width and long bed made it versatile enough for a wide variety of tasks:
- Edge jointing boards for panels and tabletops
- Squaring and straightening rough lumber
- Preparing stock for planing or glue-up
- Bevel jointing for decorative work
- Furniture and trim production
Because of its accuracy and smooth feed, the No. 205 quickly became the preferred jointer for small-shop professionals in the pre-war years.
6. Restoring a Delta No. 37-205 Jointer
Restoring a No. 37-205 jointer is both practical and rewarding. With its simple mechanical design and solid construction, most restorations involve cleaning, repainting, and minor mechanical refurbishment. A typical process includes:
- Disassembly and Cleaning – Remove tables, fence, and cutterhead; degrease and derust all components.
- Inspect Bearings and Knives – Replace bearings with sealed modern equivalents and sharpen or replace the knives.
- Motor Overhaul – Clean the motor, check wiring, and replace belts or pulleys as needed.
- Repaint and Detail – Restore the original Delta gray enamel finish; replace missing badges or decals.
- Reassembly and Alignment – Level the tables co-planar and ensure the fence is perfectly square.
- Lubricate and Fine-Tune – Use modern synthetic lubricants for smooth adjustments.
Once restored, a Delta No. 37-205 can perform to factory standards and make a showpiece addition to any vintage woodworking collection.
7. Collectability and Value Today
Collectors value the Delta No. 37-205 as a pre-Rockwell machine that represents the pinnacle of Delta’s early craftsmanship. Its solid cast-iron build and clean Art Deco-era design make it both functional and visually striking.
Depending on condition and completeness, values typically range from $400 to $900, with fully restored examples — especially with original motors, guards, and nameplates — often commanding higher prices. Machines retaining the original “Delta Milwaukee” badge are especially sought after.
8. Finding Manuals and Replacement Parts
Owners Manual for the Delta
37-205 6″ Jointer
Additional Resources for the Delta 37-220 are readily available online:
Resources for the Delta No. 37-205 jointer are readily available online:
- VintageMachinery.org – Delta No. 37-205 Manuals & Catalog Scans
- OWWM.org Forums – Restoration guides, part sources, and user tips.
- Delta Parts Distributors – Modern replacements for bearings, belts, and knives.
- Online Marketplaces – eBay, Etsy, and vintage tool sellers frequently list original manuals and reproduction nameplates.
Since early Delta jointers shared parts with later models like the 37-220, replacement components are often interchangeable.
9. Conclusion
The Delta No. 37-205 6-Inch Jointer is more than a woodworking machine — it’s a piece of industrial history. Representing Delta’s transition from small-shop tools to professional-grade machinery, the No. 37-205 stands as a lasting symbol of American ingenuity and craftsmanship.
Whether proudly displayed in a vintage tool collection or restored for daily use, the No. 37-205 continues to inspire woodworkers who appreciate precision, beauty, and durability in their tools.
Recommended Resources & Links
- VintageMachinery.org – Delta No. 37-205 Jointer Publications
- OWWM.org – Delta Jointer Restoration Forum
- Delta Rockwell Catalog Archives (1930s–1940s)
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