Mechanism for adjustably positioning an embroidering frame
US3991691A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1975 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Nov 5, 1995 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05C9/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Stepping mechanisms are used to move an embroidering frame in both the vertical and horizontal directions on a machine frame. Each stepping mechanism includes a hydraulic cylinder-piston rod assembly, a multi-way valve for directing the flow of hydraulic fluid to the assembly, and an electric stepping motor connected to the valve for regulating the flow to the assembly. To effect movement a signal is transmitted to the stepping motor which positions the valve to operate the hydraulic cylinder-piston rod assembly. The piston rod is in direct contact with the frame and its movement provides the desired movement of the embroidering frame. The piston rod is connected to the stepping motor for closing the valve when the desired position of the embroidering frame has been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.