[CW] Changing Sprngs

[D.J.J. Ring, Jr.]

Enhanced to show spring.


​
73
DR

On Wed, Jan 24, 2018 at 3:13 PM, Richard Knoppow <1oldlens1 at ix.netcom.com>
wrote:

>    The sort of spring I mean can be seen in the first drawing of
> U.S.Patent No. 237808  Jesse Bunnell's steel lever key.
>
> On 1/24/2018 6:46 AM, Bill Cromwell wrote:
>
>> Hi Richard,
>>
>> Some of those "hairpin" springs have a loop at the back and some are just
>> folded with no loop. They have been used a lot as stationary retainers as
>> well as return springs. They are use under the keys on my accordions and I
>> think most pianos. With multi-turn loops at the back you will find them in
>> mouse traps. Much heavier ones without a loop at the back are on bear traps.
>>
>> And then there are torsion bars... "let's do the twist".
>>
>> 73,
>>
>> Bill  KU8H
>>
>>
> --
> Richard Knoppow
> 1oldlens1 at ix.netcom.com
> WB6KBL
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> =30=
>
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