Patent · US Expired

Lubricating system for sewing machines

US4572093A · kind A · utility

0Cited by

5References

11Claims

0Family size

Assignee

PFAFF INDUSTRIES MASCHINEN AG · DE

Inventors

Herbert Wenz · Kaiserslautern, DE
Dietmar Becker · Tamm, DE

Key dates

Filing date	Jan 13, 1984
Grant date	Feb 25, 1986
Priority date	—
Expiry date	Jan 13, 2004

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD05B71/00
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A lubricating system for sewing machines is produced with the sewing machine running by cutting a predetermined amount of cotton fibers into small lengths and blowing the fiber lengths into the sewing machine housing. As the fibers fill the housing a felt cushion conformable to the paths of motion of the parts of the mechanism is produced. The felt cushion is supplied with oil through a wick.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.