1932 Delta 11-Inch Double Duty Wood Lathe No. 930 – A Landmark Early Delta Precision Lathe
Introduction
The Vintage 1932 Delta 11-Inch Wood Lathe No. 930 is one of Delta’s earliest full-size benchtop wood lathes. It marks a milestone in the company’s transition from small accessories to precision-crafted woodworking machines.
It was designed to offer expanded capability for both spindle turning and faceplate or bowl work. This versatility led to the famous “Double Duty” name. It had a larger 11-inch swing and smooth performance. It offered multiple factory configurations. Due to these features, it quickly became one of Delta’s best-selling lathes during the early 1930s.
Delta Tool Rests for Sale on Ebay
Delta No. 930 Lathe Headstock
Larger and more capable than Delta’s early 9-inch models, the 11-inch No. 930 delivered impressive swing capacity, smooth operation, and rugged cast-iron durability that quickly earned Delta a loyal following among woodturners.
Built during Delta’s formative years, this lathe reflects the company’s commitment to precision engineering, cast-iron durability, and creative versatility. Today, the Double Duty model is prized by collectors and restorers for its classic design. It is admired for its excellent machining and the wide range of accessories Delta offered for it.
The Delta 930 features an extended bed and an improved spindle design. It also offers optional factory accessories. These made it a favorite in home shops, vocational training programs, and light production environments. Today, it remains a highly desirable collectible. It is also a fully capable turning tool, even 90+ years after it first appeared in Delta’s early 1930s catalogs.
History of the Delta 11-Inch Wood Lathe No. 930
The Delta No. 930 was introduced around 1931–1932, during Delta’s formative years before its later Rockwell era. The machine represented a significant upgrade from Delta’s earlier 9-inch lathes:
- Larger 11-inch swing for more versatile turning
- Longer bed for increased turning length
- Improved headstock and tailstock geometry
- More robust tool rest assembly
- Compatibility with Delta’s expanding accessory line
The No. 930 was featured prominently in Delta’s catalogs from the early 1930s. It was marketed as a serious woodturning machine. It is suitable for furniture shops, educational programs, and dedicated craftspeople.
During this period, Delta was defining itself as the premier American manufacturer of compact woodworking machinery. The 930 lathe helped establish Delta’s reputation for precision. It was known for durability and thoughtful engineering long before the Rockwell acquisition of the 1940s–1950s.
Not a No. 930, But Similar Lathe Restoration
Manufacturer Background – Delta Specialty Company
Founded in 1919 by Herbert Tautz in Milwaukee, Wisconsin, the Delta Specialty Company began as a small workshop. It produced scroll saws and router accessories. The company rapidly grew into the most respected name in small-shop woodworking machinery.
Delta’s early success stemmed from:
- Precision-machined cast-iron components
- High-quality bronze or ball-bearing spindles
- Modular, expandable machine designs
- A massive accessory ecosystem
- Affordable pricing aimed at schools, hobbyists, and small professional shops
The Delta 11-Inch Lathe No. 930 embodies this era with its rugged simplicity. It also showcases excellent machining. These qualities continue to attract enthusiasts and restorers today.
Design and Features of the 1932 Delta 11-Inch Wood Lathe No. 930
The Delta No. 930 was engineered as a versatile, accurate, and smooth-running lathe capable of handling both light and medium-duty turning tasks.
Key Specifications and Features
- Swing over bed: 11 inches
- Distance between centers: commonly 37″ depending on bed configuration
- Drive system: multi-step pulley achieving 4 turning speeds
- Speed range: approx. 900–3,400 RPM (varies with motor selection)
- Headstock spindle: precision-machined, early models often using bronze bearings
- Spindle taper: #2 Morse taper (typical for Delta machines of this era)
- Tailstock: cast iron, screw-feed quill, matching #2 Morse taper
- Bed: heavy ribbed cast iron for rigidity
- Tool rest: adjustable banjo with 6″ or 12″ rest
- Factory optional equipment:
- Cast-iron motor stand
- Countershaft drive
- Turning chisels
- Faceplates
- Spur and cup centers
- Sanding and polishing attachments
Unlike many Depression-era competitor lathes, the Delta 930 was engineered to precise tolerances. This engineering resulted in a remarkably smooth and vibration-free turning experience.
Study Its Many Advantages-See Why It Is Best!
The new Delta Double-Duty Four-Speed Lathe is, we believe the ultimate in design of a lathe for the small workshop. Delta used all the vast experience they had from manufacturing thousands of lathes. They brought that experience to the design of this new lathe. Each point in the design was carefully considered. This consideration was to eliminate every fault found in the ordinary lathe offered for the small workshop. If you examine this lathe carefully and look at it point by point, you will see its value. It truly is the best lathe value ever offered. The design was unmatched until that time.
To begin with, this is a real lathe, not a toy. It is 56″ in length over all. It will swing pieces 11 inches in diameter over the bed. The standard length of the bed is 48 inches, and pieces 37 inches long can be turned between the centers. On the left-hand end of the headstock, the faceplate allows for a vast diameter of pieces. Essentially, it is practically unlimited.
The superiority of this new lathe starts with the bed. Many lathes built for small shops had beds made out of structural steel sections or mere lengths of cast iron. While these might have served their purpose fairly well, they lacked the strength, rigidity, and freedom from springing necessary. This is essential if the lathe is to perform as a good lathe should.
The bed of the Delta lathe, on the other hand, was built on an entirely new principle. It was formed from 3/16 gauge steel, and with cross members of the same gauge welded every 6 inches. It is unusually rigid and free from springing.
Here is a bed that will never get out of true. And, since every bed is made to precise limits, you may be sure the centers will always line up. It is built like a steel bridge.
The Headstock
The headstock of the Double-Duty Lathe is also unusual departure from the ordinary lathe of the time. The spindle is turned from stock a full 1 1/4″ in diameter. It runs on Timken tapered roller bearings. This ensures long life and freedom from wear and chatter. A 5/8″ hole is drilled through the spindle from end to end. This feature is very useful for metal work. It is also beneficial for repetition work in wood. The stock for small pieces can be run right through the spindle and chuck. Each piece is cut off as completed, and the stock is merely moved forward for a new piece.
Both the nose of the spindle and the right rear end are threaded; the nose right hand and the rear end left-hand. The 6″ diameter faceplate can be used on either end, due to its unique form of thread. The front of the spindle hole is reamed for No. 2 Morse Taper shanks. The drive center has a No. 2 Morse taper, making it very easily attached or removed; drills and chucks with this size shank are also attached instantly.
Indexing Mechanism
Another exclusive Delta development is the index mechanism built in as a part of the headstock. Around the front face of the cone pulley are two rows of holes. One row has eight holes, and the other has sixty. This permits the widest possible range of division. At the rear of the headstock is a knurled-head pin. It can be slid into engagement with either row of holes.
This simple and fool-proof mechanism allows all kinds of index work to be done on the lathe itself. This eliminates the need for a separate machine for the work. Using a surface gage, work may be accurately laid out into halves, quarters, etc. You slip the pin into the proper hole. Scribe the layout line. Then release the pin. Turn the pulley the required number of holes. Lock it again with the pin.
The two roles of holes provide any required number of divisions of the work. The pin holds the pulley absolutely rigid with the work while the luting or reeding is being done. No other lathe can give you this advantage.
The Tailstock
The tailstock is also of unusual convenience. The tailstock sleeve is reamed with a No. 2 Morse taper so that all centers, etc. that fit the headstock can be used in the tailstock also. The sleeve is moved to and from the work by a convenient ball-crank handle at the rear. It is comfortable and convenient for the hand. The sleeve is graduated in inches and sixteenths. It is provided with an adjustable pointer that can be set to any graduation. This feature offers a very convenient means of drilling to exact depth on the lathe.
No wrench is required to lock the tailstock to the bed. A simple movement of the ball lever at the rear of the tailstock. It is conveniently located to the hand. This movement locks and releases the whole tailstock. As a result, it can be slid instantly to any position along the bed. Note that the construction of the tailstock body is very sturdy and massive. At the same time, it is handsome in appearance.
See Accessories for the Delta 11-Inch No. 930 Lathe
Usage and Applications
The 11-inch swing and generous bed length made the Delta No. 930 suitable for a wide range of turning projects, such as:
- Furniture spindles and legs
- Tool handles
- Bowls and platters (using a faceplate)
- Craft items, knobs, and small components
- Educational shop training
- Light patternmaking
The machine’s simplicity contributed to its popularity. Delta’s evolving accessory ecosystem also helped. These factors made the 930 popular in hobby workshops and vocational training programs throughout the 1930s.
Restoration of the 1932 Delta No. 930 Lathe
The Delta 930 is exceptionally restorable. This is due to its rugged construction and modular components. There is also excellent availability of interchangeable Delta parts from the era.
Typical Restoration Steps
- Complete disassembly
Remove headstock, tailstock, pulleys, tool rest, and motor mount. - Rust removal & cleaning
Use Evapo-Rust, electrolysis, or abrasive methods as needed. - Bearing evaluation
- Bronze-bearing headstocks: clean, oil, and re-shim as needed
- Later ball-bearing versions: replace with modern equivalents
- Surface refinishing
Apply primer and Delta machinery gray paint (darker early Delta shade). - Motor restoration
Replace wiring, check windings, and install a grounded switch. - Mechanical tuning
- Align the spindle
- True the tailstock center
- Level the bed
- Ensure smooth banjo and tool rest movement
- Reassembly & testing
After lubrication and belt alignment, test speeds and vibration levels.
The 930 shares design DNA with later Delta models. Therefore, parts such as tool rests, faceplates, and centers remain easy to source or reproduce.
Restoration Parts on Ebay for the Delta 930 Lathe
No. 930 Lathe Parts Diagrams for Maintenance & Restoration
Delta No. 930 Lathe Parts for Sale on Ebay
New Lathes and Lathe Accessories for Sale on Amazon
Collectability and Value Today
The Delta No. 930 is a desirable machine for collectors of early Delta equipment due to its:
- Pre-Rockwell manufacturing
- Classic early-1930s styling
- Larger swing compared to the 9-inch models
- Limited production window
- Compatibility with early Delta accessories
Typical Market Values
- $150–$300 for rough or incomplete machines
- $350–$650 for well-preserved or fully restored examples
- $700–$1,000+ for museum-quality restorations with original stand, motor, decals, and accessories
Collectors particularly prize models with:
- Early 1930s Delta logo badges
- Original cast-iron motor stands
- Matching-era Delta motors
- Complete spindle tooling sets
Finding Manuals, Parts, and Resources
Owners Manual for the Delta
11-inch Double Duty Lathe No. 930
Because Delta machinery from the 1930s has a large and dedicated following, documentation and replacement parts remain readily available.
Manual & Catalog Resources
- VintageMachinery.org – full library of early Delta catalogs
- OWWM.org – restoration photos, forums, and technical advice
- Early 1931–1935 Delta Specialty catalogs (showing No. 930 variations)
Parts & Components
- Spur centers, faceplates, and rests frequently appear online
- Bearings and belts are easily replaced using modern equivalents
- Reproduction decals and nameplates available from specialty suppliers
- Missing stands or countershafts can often be found through OWWM classifieds or fabricated from plans
The No. 930 remains one of the easier early Delta lathes to restore because of its simple construction and shared parts ecosystem.
Delta No. 930 Lathe Parts Available on Ebay
Final Thoughts
The 1932 Delta 11-Inch Wood Lathe No. 930 is a standout example of Delta’s earliest woodworking machinery — rugged, beautifully engineered, and capable of remarkably smooth performance. Its cast-iron construction provides durability. The precise spindle allows for accuracy. The classic 1930s industrial styling adds aesthetic appeal. These features make it both a pleasure to restore. It is also a highly capable machine for modern turning projects.
The Delta 930 remains a timeless symbol of American-made quality. This is true whether it is showcased as part of a vintage Delta collection. It can also be put back into daily use in the workshop. This product exemplifies Delta’s golden age.
Quick Reference Summary
| Feature | Specification |
|---|---|
| Model Number | Delta No. 930 |
| Type | 11-Inch Wood Lathe |
| Year Introduced | 1932 |
| Swing Over Bed | 11 inches |
| Distance Between Centers | 37″ |
| Speeds | Four-speed stepped pulley |
| Speed Range | ~900–3,400 RPM |
| Construction | Cast iron |
| Headstock Bearings | Timkin Roller Bearings or early ball bearings |
| Taper | #2 Morse taper |
| Stand Type | Benchtop or optional cast-iron stand |
| Manufacturer | Delta Specialty Company |
| Country of Manufacture | U.S.A., Milwaukee |
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