Overview
ISO 1865:1977 - "Textile machinery and accessories - Serrated bars for mechanical warp stop motions - Designations of dimensions, and dimensions of cross-section" specifies the nomenclature and dimensional designations used for serrated bars in mechanical warp stop motions. It defines how to name and measure features such as locating cut‑outs, slots for drives, serration profiles and the cross‑section dimensions of assembled serrated bars. ISO 1865:1977 replaces ISO Recommendation R 1865‑1971 and includes an annex with equivalent German designations on request of ISO/TC 72.
Key topics
- Designation of features: Standardized names and references for parts of serrated bars (outer fixed bar, inner movable bar, combination assembly).
- Locating cut‑outs and slot positions: Rules for specifying a cut‑out placed either between the end of the bar and the drive slot, or between the drive slot and the first serration.
- Serration geometry: Identification of serration pitch, width and depth parameters (notation shown for outer and inner bars).
- Drive elements: Designation and description of the driving bolt and nut used to couple serrated bars to warp stop motion drives.
- Cross‑sectional dimensions: Values and designations for cross‑section dimensions of assembled serrated bars to ensure interchangeability and correct fit.
- Language and equivalents: Official ISO designations are provided in English, French and Russian; German equivalents are included in an annex (published under responsibility of the German member body).
Applications
- Ensures consistent drawing notes and technical specifications for serrated bars used in looms and mechanical warp stop motions.
- Supports manufacturers in producing compatible serrated bars and drive components (bolts, nuts) that meet international naming and dimensional conventions.
- Helps design engineers and CAD modelers specify and check serration geometry and mounting features during product development.
- Aids procurement and quality control teams in verifying incoming parts against standardized dimensional designations to guarantee interchangeability.
- Useful for maintenance and spare‑parts suppliers to identify and order correctly designated serrated bars and accessories.
Who should use this standard
- Textile machinery designers and OEMs
- Mechanical engineers working on loom assemblies and warp stop motion systems
- Manufacturers of serrated bars, driving bolts and nuts
- Technical drafters, CAD specialists, procurement and QA personnel in textile engineering firms
- Standards bodies and testing laboratories referencing textile‑machinery component nomenclature
Related standards
- Produced under ISO/TC 72 (Textile machinery and accessories).
- Includes an annex with German designations (DIN equivalents) for cross‑reference; official ISO language designations remain English, French and Russian.
Keywords: ISO 1865:1977, serrated bars, warp stop motion, textile machinery, serration pitch, cross‑section dimensions, driving bolt, nomenclature, component dimensions.