About this document
Improved Lever Mechanism for Sewing Machines by sadagoapan is a document available to read on EtoBox.
This patent describes an improved lever mechanism for a sewing machine that addresses drawbacks of prior mechanisms. It uses a rod positioned on the lever that acts on the lever when pivoted in one direction. First and second springs of different diameters are disposed concentrically with the rod to urge it in the opposite pivoting direction of the lever. This reduces parts, simplifies the structure, and allows easier adjustment of spring pressure compared to prior mechanisms.
- Author
- sadagoapan
- Language
- EN