Mystery clamp

[Yadda]

http://forum.multitool.org/index.php/topic,50835.msg1423674.html#att304486
http://forum.multitool.org/index.php/topic,50835.msg1423674.html#att304489

Sorry about the photo links.  I am still learning how to resize photos.

The patent date is March 8, 1927. I've found nothing on it so far.

[Papaw]

The long clamp looks like the clamp that is often missing from the Eifel Plierwench .

[Yadda]

The long clamp looks like the clamp that is often missing from the Eifel Plierwench .

Good eye! It is an Eifel Plierench Clamp. The mystery is the other clamp with two screws and the split lip.

[Bill Houghton]

The date looked more like March 8, 1921 to me, but that got me nowhere either.

[Catch22!]

I am thinking it is a clamp for theater rigging, lighting or scaffolding pipe.   Looks like the foot would fit over like a stage catwalk with a pipe or light bracket in the C.  The slight taper on the screws would appear to be make to grip into something.

[turnnut]

 look at patent number 1,371,073        March 8, 1921

 piano key repair clamp

 patentee; Edward Robert Crandall,  Coldwater, Mich.

[Yadda]

... and we have a winner!  Thanks!