Brush – broom – and mop making – Processes
Patent
1994-10-20
1997-03-11
Husar, John M.
Brush, broom, and mop making
Processes
300 5, A46D 108
Patent
active
056093985
ABSTRACT:
A process for forming a twisted stem tool uses a specially designed clamping jaw fixture at the nose or bight portion of a half-round wire or cotter pin which helps to reduce the required clamping force and distribute that force over the entire wire-fill material interface. The jaws of the clamping fixture engage the outside of the nose over a substantial area, and in some forms actually bite into the wire or pin. After the twisting operation, the stem is placed in a swaging or coining press, and the stem beyond the fill material is reformed into a three or six-sided drive stem. The cold flow of the metal to form the flat sides locks the twisted half round wire or pin sections together so that the stem will resist unwinding if the tool is driven in a reverse direction. The coining of the stem providing flats provides a tighter confinement of the bundle of fill material at the stem, and enables a common three or six jaw Jacob's style chuck, for example, to obtain a more secure grip.
REFERENCES:
patent: 2465396 (1949-03-01), Peterson et al.
patent: 2580378 (1951-12-01), Peterson et al.
patent: 2603921 (1952-07-01), Peterson
patent: 2895155 (1959-07-01), Peterson
patent: 2972157 (1961-02-01), Peterson
patent: 3582140 (1971-06-01), Kaufman et al.
patent: 5464275 (1995-11-01), Altemare et al.
Tyler James B.
Warner Rueben B.
Husar John M.
Jason Incorporated
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