Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1990-05-14
1992-07-28
Matecki, Katherine
Winding, tensioning, or guiding
Coil holder or support
Spool or core
182133, B65H 8106
Patent
active
051335107
ABSTRACT:
A column such as a concrete bridge or overpass column is reinforced by transverse post tensioning a steel wire around the length of the column. Apparatus for winding the wire around the column includes a first support frame which is attached to the column and a second support frame which is movably positioned around the column. The second support frame is movably supported on the first support frame whereby the second support frame can move axially along the length of the column. The second support frame includes a fixed inner ring, and a rotatable outer ring engages the inner ring in a tongue-in-groove fashion. The outer ring supports a spool of wire and a tensioning spool, and a drive motor and pinion mounted to the fixed inner ring drives the outer ring gear and rotates the spool of wire around the column as the second support frame is translated axially along a length of the column. The first support frame is repeatedly moved along the column until the full length of the column has been wound with wire.
REFERENCES:
patent: 350289 (1886-10-01), Brown
patent: 2520402 (1950-08-01), Hirsh
patent: 3230123 (1966-01-01), Christensen
patent: 3237720 (1966-03-01), Landovist
patent: 3380675 (1968-04-01), Baxter et al.
patent: 4121780 (1978-10-01), Taylor et al.
patent: 4677936 (1987-07-01), Dahlem
patent: 4786341 (1988-11-01), Kobatake et al.
Davis Edgar A.
Swanson David T.
Matecki Katherine
VSL Corporation
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