Thread keeper

Details Thread keeper Thread keeper

1980-05-19

1981-07-21

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Brake

24212951, 2421298, 242134, 242141, B65H 5904, B65H 4926

Patent

active

042793890

ABSTRACT:
A thread keeper to prevent undesired unwinding of thread from a spool. The unit comprises a channel shaped element with the mid portion paralleling the axis of the spool and the two arms straddling the ends of the spool. The arms have short projections that enter the ends of the cylindrical bore through the spool whereby the spool can rotate within the keeper unit. The space between the mid portion of the keeper and the thread on the spool is filled with compressible friction applying material that expands to be in continuous braking engagement with the thread as it is pulled and unwound from the spool.

REFERENCES:
patent: 212893 (1879-03-01), Burgess
patent: 479554 (1892-07-01), Carpenter
patent: 545549 (1895-09-01), Strodel et al.
patent: 567743 (1896-09-01), Griffith
patent: 577258 (1897-02-01), Innes
patent: 891185 (1908-06-01), McDowell
patent: 982361 (1911-01-01), Hedenstrom
patent: 1398347 (1921-11-01), Stott
patent: 2319864 (1943-05-01), Holmes
patent: 2542758 (1951-02-01), Erickson

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