Method for making wavy tapered brush bristles

Details Method for making wavy tapered brush bristles Method for making wavy tapered brush bristles

1997-02-05

2000-06-27

Calvert, John J.

Textiles: manufacturing

Thread finishing

Surface modification of running length

28247, D02G 114

Patent

active

060790873

ABSTRACT:
A machine makes tapered and also uniformly waved bristles for brushes, especially useful for paint brushes, by a method of applying uniform crimping pressure to crimp straight tapered bristles between two crimping gears (20, 30) having mating indentations. The spacing between the crimping gears is freely variable but the force is generally constant. This results in a wave amplitude that is constant over the length of each bristle regardless of the taper. The "floating" constant-force crimping pressure may be provided by weight biasing or electronic control. Tapered wavy filaments brushes employing such filaments and methods of forming such filaments also constitute a part of this disclosure.

REFERENCES:
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patent: 2508799 (1950-05-01), Reis, Jr.
patent: 3217377 (1965-11-01), Baer et al.
patent: 3396445 (1968-08-01), Hopkins et al.
patent: 4307478 (1981-12-01), Ward et al.
patent: 4365642 (1982-12-01), Costa
patent: 4381325 (1983-04-01), Masuda et al.
patent: 4979274 (1990-12-01), McCullough, Jr.
patent: 5161555 (1992-11-01), Cansler et al.

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