Die-Cut Steel Sewing Machine Internal Feed or Cam Component
Industrial Mechanical Component / Sewing Machine Part · Unknown; likely a mass-manufacturer such as Singer, Brother, or Kenmore based on industrial die-cutting patterns.
Pattern: Non-decorative; industrial functional design
Type
Industrial Mechanical Component / Sewing Machine Part
Maker
Unknown; likely a mass-manufacturer such as Singer, Brother, or Kenmore based on industrial die-cutting patterns.
Material
Carbon steel or hardened tool steel; contains no precious metal (0% silver)
Dimensions
Approximately 3cm x 2.5cm; weight estimated at 2-5 grams; thickness likely 1.5mm to 2mm.
Description
This is a purely functional industrial component, specifically an internal lever or cam from a mechanical device like a sewing machine or typewriter. Contrary to high-end silver items, this is a utilitarian steel part designed for durability and precision movement within a larger assembly. Its irregular shape, featuring notches and lobed edges, allows it to move other parts in a timed sequence.
Key Features
Irregular geometric profile, elongated pivot slot, and matte grey steel appearance.
Material & Composition
Carbon steel or hardened tool steel; contains no precious metal (0% silver)
Finish & Decoration
Industrial tumbled or matte cold-rolled steel finish; no intentional decorative elements; surface shows mechanical oxidization.
Hallmarks & Stamps
No hallmarks or silver purity stamps present; some industrial parts of this type may feature a small stamped numerical part code (not visible here).
Construction Details
Industrial die-stamping (blanking); sharp sheared edges suggest high-volume mechanical production.
Functional Features
Cams, notches, and an elongated pivot hole designed to interface with internal gears or levers to coordinate mechanical movement.
Handle & Grip Details
None; designed for internal mechanical housing.
Craftsmanship Details
Precision-engineered for mechanical tolerance but lacks any artisan hand-finishing or precious metal craftsmanship.
Authentication Indicators
Absence of silver hallmarks; magnetic property (steel is magnetic, silver is not); industrial sheared edges.
Origin & Manufacturing
Globally mass-produced; likely Japan, Taiwan, or USA depending on machine age.
Era & Period
Modern Industrial (mid-20th century to present)
Age Estimate
c. 1950-1990; based on the complexity of the stamping and the specific mechanical geometry.
Cultural Significance
Represents the peak of mechanical engineering before the pervasive shift to electronic and plastic components in consumer appliances.
Condition Notes
Fair; shows significant surface tarnish, oil residue, and mechanical wear on the 'lobes' where it would have contacted other parts.
Value Estimate
$1.00 - $5.00 (primarily as a replacement part for specific vintage machine repair); no scrap metal value.
Care & Maintenance
Wipe with a light machine oil (like Triflow) to prevent further oxidation; avoid water or silver polish which would cause rust.
Similar Pieces
Often confused with 'sewing machine cams' or 'feed dogs,' though this is an internal linkage part rather than a user-facing attachment.
Interesting Facts
While appearing to be scrap to some, these parts are essential for the 'timed' movement of sewing needles—specifically for zigzag or decorative stitch functions.