Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1971-10-29
1976-02-10
Gilreath, Stanley N.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
B65H 5430
Patent
active
039374203
ABSTRACT:
The level wind apparatus includes a pair of parallel spooling shafts mounted in a frame and connected to each other for rotation in opposite directions. Both of the shafts have the same square thread profile with the same pitch and in the same direction. The shafts are positioned with the thread crest of one shaft in overlying relation with the thread root or spiral cam track of the other shaft. The spooling shafts are connected to each other for rotation at the same peripheral speed in opposite directions. In one embodiment opposing pin members are alternately positioned in the spiral cam tracks or threads of the respective shafts and control the direction of movement of a cable guide bracket that is suitably mounted on a horizontal shaft parallel to the pairs of threaded spooling shafts. The movement of one pin out of the thread or cam track and the movement of the other pin into the thread or cam track is controlled by the end thread in each of the shafts that is half pitch and has an inclined portion that tapers to zero depth. The tapered portion of the thread urges the pin out of the thread or cam track of one spooling shaft while the other pin is moved into the cam track of the other spooling shaft. Another embodiment includes a single pin member that is positioned in the thread or cam track of one spooling shaft and upon rotation moves to the end of that shaft where it is urged by the inclined end thread into the cam track of the other spooling shaft to move in the opposite direction. In another embodiment the strand or cable is positioned in the thread or cam track and moves transversely upon rotation of the shafts and the cable reverses the direction of transverse movement when it reaches the end of the shaft and is transferred into the cam track or thread of the other shaft.
REFERENCES:
patent: 1472847 (1923-11-01), McGann
patent: 1918587 (1933-07-01), Bryant
patent: 2419003 (1947-04-01), Bateman
patent: 2421269 (1947-05-01), Joyce
patent: 2437725 (1948-03-01), Conner
patent: 2757883 (1956-08-01), Schlang et al.
patent: 2964261 (1960-12-01), Hambach et al.
patent: 3061237 (1962-10-01), Carter
patent: 3266741 (1966-08-01), Ferrier
Gilreath Stanley N.
Price, Jr,. Stanley J.
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