[Shop-talk] Can someone identify this tool?

[Elton E. (Tony) Clark]

*I seem to remember shops using this valve spring compressor tool on
flathead engines like the ol' Ford V8 and N series Ford tractors.  It was
likely pretty specific to the engine due to valve spring diameter and
limited space.  *
**
*I found this image of the Owatona version:*
**
http://home.comcast.net/~alloy-artifacts/Photos/tools/otc_a100_valve_spring_lifter_pat_f_cropped_inset.jpg