I was curious about how the Azonic Products model 3535 (Azonic Products - Tension Devices) works, and recalled seeing a patent with a drawing that looked like the product, so I did a little research, and hit paydirt.
There are two two relevant patents. The first one is 3,990,652 in 1976, to Maurice H Brown, who seems to be their main brain. In 1991, '652 is updated by 5,040,741, which states that while '652 worked well for 40 AWG and heavier, the new approach of '741 is good for AWG 44 to 56.
A separate patent, 6,409,116, covers AWG 55 and thinner.
The big delay between the patents probably reflects the changing needs of industry - people didn't wind much AWG 55 in 1976.
Now, '652 was originally developed as a pretensioner for the standard bouncing-dancer tensioner described in 3,837,598 (Azonic Products - Tension Devices), but is usable by itself for ultrafine wire.
A specific issue being solved was the winding of square and rectangular coils, where the wire jerks (accelerates), so it's reasonable to hope that these will work well for pickups.
There are two two relevant patents. The first one is 3,990,652 in 1976, to Maurice H Brown, who seems to be their main brain. In 1991, '652 is updated by 5,040,741, which states that while '652 worked well for 40 AWG and heavier, the new approach of '741 is good for AWG 44 to 56.
A separate patent, 6,409,116, covers AWG 55 and thinner.
The big delay between the patents probably reflects the changing needs of industry - people didn't wind much AWG 55 in 1976.
Now, '652 was originally developed as a pretensioner for the standard bouncing-dancer tensioner described in 3,837,598 (Azonic Products - Tension Devices), but is usable by itself for ultrafine wire.
A specific issue being solved was the winding of square and rectangular coils, where the wire jerks (accelerates), so it's reasonable to hope that these will work well for pickups.
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