Spool pin holder for a sewing machine

Details Spool pin holder for a sewing machine Spool pin holder for a sewing machine

1982-09-29

1984-02-28

Christian, Leonard D.

Winding, tensioning, or guiding

Support for a strand material holder

For a spool

2421304, B65H 4918

Patent

active

044338171

ABSTRACT:
A spool pin holder for accommodating deflection of a spool pin wherein a spherical segment adjacent the ends of the spool pin is seated in a socket in a spool pin post adjacent a socket of square profile having grooves extending along the diagonals of the square beyond the square so as to accommodate therein a first pair of leaf springs in a first diagonal on either side of a spool pin end and a second pair of leaf springs in the second diagonal about the spool pin end adjacent the first pair so as to provide a restoring force to the spool pin in response to any disturbing force displacing the same.

REFERENCES:
patent: 2527192 (1950-10-01), Mangiaracina
patent: 2858089 (1958-10-01), Yasui
patent: 3224708 (1965-12-01), Laidig
patent: 3444833 (1969-05-01), Blackwood et al.

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