Cam Dobby Mechanism for Weaving Looms
A mechanical cam dobby controls harness movement on weaving looms (heading 8446) for patterned sheds with up to 24 frames. It uses rotating cams to lift specific heald frames per pick, enabling simple repeat patterns. Falls under 8448.11.00.00 as dobby machinery auxiliary to power looms.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If electronic rather than purely mechanical cam type
Electronic dobbies may classify under shuttle changing mechanisms or other auxiliaries.
If for dobby mechanisms used with non-textile machinery like narrow fabric makers
Machinery not principally for headings 8444-8447 falls under other textile machinery parts.
If imported solely as replacement cams without dobby assembly
Individual cams or pulleys classify as transmission components in Chapter 84.
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Import Tips & Compliance
• Include engineering drawings showing dobby integration with loom; ensure shaft compatibility documentation
• Avoid classifying as complete looms; check for wear parts requiring separate HTS
Related Products under HTS 8448.11.00.00
Electronic Jacquard Head for Textile Looms
An electronic Jacquard head is auxiliary machinery used with looms of heading 8446 to control individual warp threads for complex fabric patterns like brocade. It replaces traditional mechanical systems with solenoid-driven hooks for precise pattern selection. Classified under 8448.11.00.00 as a Jacquard mechanism for weaving machines.
Card Punching Machine for Jacquard Looms
A specialized punch machine creates control cards for traditional Jacquard looms by perforating paper cards according to pattern designs. Used with card reading needles in Jacquard mechanisms on heading 8446 looms. Specifically provided for in 8448.11.00.00 as card punching machines for use therewith.
Electronic Dobby Controller Assembly
An integrated electronic dobby controller with servo motors and pattern memory for modern rapier looms (8446). Replaces mechanical linkages for unlimited pattern storage and precise timing. Classifies in 8448.11.00.00 as dobby machinery auxiliary to textile weaving machines.
Jacquard Card Assembling Machine
Machine that assembles multiple punched Jacquard cards into continuous chains using lacing wires or tapes for uninterrupted loom operation. Essential for long repeat patterns on heading 8446 looms. Covered by 8448.11.00.00 as card assembling machines for Jacquards.
Double-Lift Jacquard Mechanism
Advanced double-lift double-draw Jacquard provides selection on both sheds for high-speed weaving on air-jet looms (8446). Uses two hooks per warp end for continuous operation without dwell time. Specifically a Jacquard under 8448.11.00.00 for textile auxiliaries.
Pattern Card Copying Machine for Dobbies
Optical or mechanical duplicator copies master pattern cards to produce multiple sets for dobby-controlled looms. Ensures identical pattern repeats across production runs. Falls under 8448.11.00.00 as card copying machines for use with dobbies.