Wooden handles for POWRAHS

IS 5942: Scope & Key Specifications for Wooden Handles for Powrahs

• Scope:
  Covers wooden handles for Powrahs as per IS 1759:1980. It specifies dimensions, timber species, tolerances, and quality requirements.

• Timber Species:
  Refer IS 620:1985 for approved timber species suitable for tool handles, emphasizing durability and strength.

• Dimensional Tolerances (Clause 6.2):

  • Head fit area: +3 mm / -0 mm
  • Other areas: ±2 mm

• General Requirements:
  Follow IS 620:1985 for overall handle quality, including moisture content, grain orientation, and finish.

• Rounding Off Results:
  Use IS 2:1960 rules for numerical rounding, maintaining significant digits as per specified values.

Summary Table: Dimensional Tolerances

References for Further Details

• IS 1759:1980 — Powrahs Specification
• IS 620:1985 — Wooden Tool Handles, General Requirements
• IS 707:1976 — Timber Technology Glossary

flowchart TD
    A[IS 5942 Scope] --> B[Wooden Handles for Powrahs]
    B --> C[Timber Species as per IS 620]
    B --> D[Dimensional Tolerances]
    D --> E[Head Fit: +3/-0 mm]
    D --> F[Others: ±2 mm]
    B --> G[Quality per IS 620]
    B --> H[Rounding per IS 2]

This concise scope ensures quality and interchangeability for Powrah wooden handles.

IS 5942: Wooden Handles for Powrah - Key References & Specifications

• General requirements for wooden tool handles are governed by IS 620:1985 — includes workmanship, permissible defects, tests, treatment, moisture content, and sampling methods.
• Handles must be marked legibly with manufacturer’s name/trademark and year of manufacture.
• All dimensions are in millimeters.
• Tolerances (Clause 6.2):
  • Tool head fit: +3 mm / -0 mm
  • Other dimensions: ±2 mm
• Definitions per IS 620:1985 and IS 707:1976 apply.
• The standard ensures compliance with BIS quality control and inspection systems.
• For rounding off test results, follow IS 2:1960 rules.

This standard is periodically reviewed and amended by BIS for quality assurance.

flowchart LR
    A[IS 5942: Wooden Handles for Powrah] --> B[IS 620:1985 - General Requirements]
    A --> C[IS 707:1976 - Timber Terms]
    A --> D[IS 1759:1980 - Powrah Tools]
    B --> E[Workmanship, Defects, Tests]
    B --> F[Sampling & Moisture Content]
    A --> G[Marking & Dimensions]
    G --> H[Tolerances: +3/-0 mm (head), ±2 mm (others)]

Summary: IS 5942 references IS 620 for detailed requirements, mandates specific tolerances, and requires proper marking and quality control per BIS regulations.

IS 5942: Definitions & Key Specifications Summary

• Scope: Wooden handles for POWRAHS as per IS 1759:1980.
• Definitions: Refer to IS 620:1985 (General requirements for wooden tool handles) and IS 707:1976 (Timber technology glossary).
• Timber Species: Updated in this revision; detailed species list in IS 5942 clause 4.
• Workmanship & Defects: Follow IS 620:1985 standards for finish, permissible defects, tests, treatment, and moisture content.
• Marking: Each handle must be legibly marked with manufacturer’s name/trademark and year of manufacture.
• Sampling & Conformity: Sampling methods and conformity criteria as per IS 620:1985.
• Dimensions: All dimensions are in millimeters; see Fig.1 in IS 5942 for handle geometry.

Key Reference Table (from IS 620:1985)

Conceptual Illustration (Handle Marking & Defects)

flowchart LR
    A[Raw Timber] --> B[Selection of Species]
    B --> C[Shaping & Finishing]
    C --> D[Inspection for Defects]
    D --> E{Defects Acceptable?}
    E -- Yes --> F[Marking & Packaging]
    E -- No --> G[Rework or Reject]

For detailed formulas or dimensions, refer to IS 5942 Fig.1 and IS 620 clauses.

IS 5942 (1989) — Species of Timber for Wooden Handles for POWRAHS

Key Specifications (Clause 4)

• Timber Species: Handles must be made from timber specified for Class IV handles in IS 620:1985.
• Moisture Content: Well-seasoned timber, preferably air-seasoned, with moisture ≤ 15%.
• Grain: Fairly straight grain with inclination ≤ 1 in 20.
• Defects Not Allowed:
  • Centre heart (pith)
  • Decay/rot
  • Borer/insect attack
  • Brashness
  • Checks and shakes (except minor hair cracks)
  • Splits, warps
  • Objectionable knots and sapwood (except as permitted in IS 620:1985)
  • Any defect reducing handle life or utility

Reference Table: Class IV Timber (from IS 620:1985)

Summary Diagram: Timber Quality Requirements

flowchart TD
    A[Timber for Handles] --> B[Class IV Timber (IS 620)]
    B --> C[Moisture ≤ 15%]
    B --> D[Straight Grain ≤ 1:20]
    B --> E[No Defects]
    E --> F[No Pith/Decay]
    E --> G[No Insect Attack]
    E --> H[No Brashness/Checks]
    E --> I[No Splits/Warps]
    E --> J[No Objectionable Knots/Sapwood]

Note: For detailed species list and mechanical properties, refer to IS 620:1985, which complements IS 5942 for wooden handle specifications.

IS 5942: Manufacture and Treatment of Wooden Handles

Key Specifications:

• Moisture Content: Blanks must be well-seasoned, preferably air-seasoned, with moisture content ≤ 15% (Clause 4.2).
• Grain: Fairly straight grain, inclination ≤ 1 in 20.
• Defects: No pith, decay, rot, insect attack, brashness, checks (except minor hair cracks), splits, warp, or objectionable knots/sapwood as per IS 620:1985.
• Marking: Each handle must be legibly marked with manufacturer's name/trademark and year of manufacture.

Treatment (Clause 5.2):

• Immediately after inspection, accepted handles are soaked in hot raw linseed oil (~90°C) for 1 hour.
• After soaking, handles are drained and wiped clean with a dry cloth.

Summary Table: Treatment Process

Additional Reference

• Workmanship, permissible defects, tests, and moisture content follow IS 620:1985.
• Sampling and conformity criteria also per IS 620:1985.

flowchart TD
    A[Inspection] --> B[Soak in hot raw linseed oil (90°C) for 1 hour]
    B --> C[Drain handles]
    C --> D[Wipe clean with dry cloth]
    D --> E[Mark handles with manufacturer & year]

This ensures durability, resistance to moisture, and quality compliance for wooden tool handles.

IS 5942: Dimensions and Tolerances for Wooden Handles

Key Specifications:

• Dimensions: As per Fig. 1 of IS 5942 (not provided here, refer to the standard for exact sizes).
• All dimensions in millimeters (mm).

Tolerances (Clause 6.2):

Additional Requirements:

• Handles must be soaked in hot raw linseed oil (~90°C) for 1 hour post-inspection (Clause 5.2).
• Handles must be marked with manufacturer’s identification and year.
• Workmanship, permissible defects, moisture content, and testing conform to IS 620:1985.

Summary Table:

Visual Concept (Mermaid Diagram):

graph TD
    A[Wooden Handle] --> B[Dimensions as per Fig. 1]
    A --> C[Tolerances]
    C --> D[Head Fit: +3/-0 mm]
    C --> E[Other Areas: ±2 mm]
    A --> F[Post-Inspection Treatment]
    F --> G[Soak in hot linseed oil (90°C) for 1 hour]
    A --> H[Marking]
    H --> I[Manufacturer & Year]

For exact dimensional details, refer to Fig. 1 in IS 5942. Ensure compliance with IS 620 for quality and testing protocols.

IS 5942 - Other Requirements Summary

Tolerances (Clause 6.2)

• Tool head fit: +3 mm / -0 mm
• All other places: ±2 mm

Workmanship & Finish (Clause 4.2)

• Follow IS 620:1985 for:
  • Workmanship quality
  • Permissible defects (in addition to IS 5942)
  • Tests, treatment, and moisture content of handles
  • Sampling and conformity criteria

Marking

• Each handle must be legibly and indelibly marked with:
  • Manufacturer's name/initials/trade-mark
  • Year of manufacture

Units

• All dimensions are in millimeters (mm)

Reference Standards

• IS 620:1985 — General requirements for wooden tool handles
• IS 1759:1980 — Specification for POWRAHS (handles' tool)
• IS 707:1976 — Timber technology glossary

Notes:

• Handles must comply with BIS quality control and inspection.
• Use of the Standard Mark is regulated by BIS under the Bureau of Indian Standards Act, 1986.

flowchart LR
    A[IS 5942 Other Requirements] --> B[Tolerances]
    B --> B1[Tool head fit: +3/-0 mm]
    B --> B2[Other places: ±2 mm]
    A --> C[Workmanship & Finish]
    C --> C1[IS 620:1985 compliance]
    A --> D[Marking]
    D --> D1[Manufacturer & Year]
    A --> E[Units]
    E --> E1[Dimensions in mm]

For detailed tests, defects, and sampling, refer directly to IS 620:1985.

IS 5942: Marking Specifications for Wooden Handles

Marking Requirements (Clause 4.2):

• Each handle must be legibly and indelibly marked with:
  • Manufacturer's name, initials, or recognized trademark
  • Year of manufacture
• Marking ensures traceability and quality assurance.

Additional Notes:

• Marking dimensions and inscriptions should be clear and permanent.
• All dimensions related to handles are in millimetres (mm).
• Handles must comply with workmanship, permissible defects, and moisture content as per IS 620:1985.
• Sampling and conformity criteria also follow IS 620:1985.

Tolerances (Clause 6.2):

Post-inspection Treatment (Clause 5.2):

• Soak accepted handles in hot raw linseed oil (~90°C) for 1 hour.
• Drain and wipe dry.

Summary Table for Marking

flowchart TD
    A[Manufacture Handle] --> B[Mark with Manufacturer & Year]
    B --> C[Inspection & Sampling (IS 620:1985)]
    C --> D{Accepted?}
    D -- Yes --> E[Soak in Hot Linseed Oil (90°C, 1 hr)]
    E --> F[Dry & Dispatch]
    D -- No --> G[Reject/Rectify]

This ensures handles meet IS 5942 standards for marking, quality, and durability.

IS 5942: Sampling and Criteria for Conformity

• Sampling Method & Criteria: As per IS 620:1985, which governs general requirements for wooden tool handles, including sampling and conformity criteria.

• Key Points from IS 620:1985 (Referenced):

  • Sampling is done by drawing representative samples from production batches.
  • Criteria for conformity include workmanship, permissible defects, moisture content, and treatment.
  • Each handle must be legibly marked with the manufacturer's name/trademark and year of manufacture.

• Tolerances (Clause 6.2 of IS 5942):

  • At tool head fit: +3 mm / -0 mm
  • Elsewhere: ±2 mm

• Workmanship & Finish: Must comply with IS 620:1985, including permissible defects and testing.

Summary Table: Tolerances for Wooden Handles (IS 5942:1989)

Marking Requirements:

• Manufacturer’s name, initials, or trademark
• Year of manufacture
• Indelible and legible marking

Note:

For detailed sampling plans, acceptance criteria, and test methods, refer directly to IS 620:1985.

flowchart LR
    A[Production Batch] --> B[Draw Representative Samples]
    B --> C{Test Samples}
    C -->|Pass| D[Batch Accepted]
    C -->|Fail| E[Batch Rejected or Reworked]

This ensures quality control and conformity to IS standards.