Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1988-08-08
1989-12-19
Levy, Stuart S.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
744248R, B66B 1104, B65H 1930
Patent
active
048877743
ABSTRACT:
A safety nut assembly is provided for mounting to the carriage of a backstand apparatus to which a large roll of paper is rotatably mounted. The backstand apparatus includes an inclined screw spindle to which the carriage is threadedly engaged, such that rotation of the screw spindle moves the carriage therealong. The safety nut assembly comprises a mounting portion for secure but removable mounting to the carriage of the backstand. The safety nut assembly further includes a threaded aperture for threadedly engaging the inclined screw spindle. The threaded grooves of the threaded aperture in the safety nut assembly are larger than the threads of the primary weight-bearing bushing in the carriage. Thus, the safety nut assembly will assume a weight-bearing function only upon failure of the primary bushing in the carriage. The safety nut assembly may be formed from two opposed halves which can be assembled around opposed sides of the inclined screw spindle to facilitate the retrofitted mounting of the safety nut assembly to the backstand apparatus.
REFERENCES:
patent: 1419906 (1922-06-01), Klausmeyer
patent: 2622816 (1952-12-01), Koch
patent: 3298667 (1967-01-01), Grantham et al.
patent: 3309060 (1967-03-01), Villars
patent: 3687234 (1972-08-01), Gendreau
patent: 3833092 (1974-09-01), Flinchbaugh
patent: 4279329 (1981-07-01), Gehron
Brewer Jim
Ellison Kathleen
Gholston Yvonne
Harville Dyle
Kirby Danny
duBois Steven M.
Levy Stuart S.
Sommer Evelyn M.
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