A lever operated by the user’s knee controls the presser foot on certain sewing machines. This hands-free lifting mechanism allows for greater control and manipulation of fabric, especially helpful when managing multiple layers or intricate designs. This feature is commonly found on industrial machines and higher-end domestic models.
The ability to raise the presser foot without using one’s hands streamlines the sewing process, improving efficiency and precision. It facilitates quick pivoting, turning, and repositioning of material under the needle. This ergonomic advantage reduces hand fatigue and contributes to a more comfortable sewing experience, particularly during prolonged sessions. Its development addressed the need for increased control and speed demanded by evolving textile production throughout the 20th century.
