Draw twisting machine

Details Draw twisting machine Draw twisting machine

1975-10-21

1978-07-25

Scott, James R.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Mechanically coupled in fixed ratio of movement

318 8, H07K 1734

Patent

active

041032101

ABSTRACT:
A draw twisting machine is provided with a plurality of synchronous motors which drive respective draw rollers. The synchronous motors are supplied with electrical power from an A.C. generator having a variable frequency output. The A.C. generator is driven by a D.C. motor which is operatively arranged to run at variable angular velocity (rpm), the velocity being steplessly variable over a wide range. The D.C. motor may be driven at a crawl speed by an asynchronous electric motor via a transmission and overriding clutch.

REFERENCES:
patent: 2376421 (1945-05-01), Drake
patent: 2515565 (1950-07-01), Mohl
patent: 2763824 (1956-09-01), Bacheler
patent: 3210629 (1965-10-01), Hornbarger et al.
patent: 3315148 (1967-04-01), Grillo
patent: 3379945 (1968-04-01), Mitchell et al.
patent: 3417561 (1968-12-01), Wolf
patent: 3521441 (1970-07-01), Lamprster
patent: 3636696 (1972-01-01), Howe et al.
patent: 3668485 (1972-06-01), Norris

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