Tufting machine apparatus
US4445447A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1982 |
| Grant date | May 1, 1984 |
| Priority date | — |
| Expiry date | Dec 17, 2002 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05C15/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A tufting machine having a needle bar moveable transversely to the direction of movement of the base material has a stitch placement drive including a stepper cam and a cam drive adapted selectively to rotate the cam through a predetermined angle and in a predetermined direction. A sensor operative in response to the position of the needles energizes the cam drive when the needles are in a retracted position. The cam drive includes a motor, and gearing provided between the motor and the cam so that one revolution of the gearing causes rotation of the cam through an angle substantially equal to the angular separation of the steps about the periphery of the cam. The motor is braked when it is in a datum position as determined by a second sensor coupled to the motor, the brake and an indexing pattern device which controls the rotational direction and number of revolutions made by the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.