✅ SOLVED Found in Potomac River What in the world - cord tightener (cheers Redcoat)

[Rhapsody]

Kinda looks like a kazoo, has a patent date of Apr 16 1867 and a womans bust. The reverse has a spring. Help is needed and appreciated in the ID.

 

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[Red-Coat]

Looks like part of the device patented as a “curtain cord tightener” by Chauncey C. Parker of Brooklyn, NY:

"Cord-pulley's for curtain fixtures have heretofore been made with a spring, which yields or expands as the cord may slacken or tighten under atmospheric influences. They have, however, been constructed so as to have a very different appearance from the ordinary rack-pulley, and the cost of manufacture was enhanced. The nature of my said invention consists in a pulley-slide having two arms at right angles to each other, one arm receiving the pulley and the other extending up within the coils of a helical spring contained in a sheet-metal case, which arm becomes the guide and sustains the pulley, allowing it to slide with but little friction as the cord may contract or expand."

 

[Rhapsody]

Looks like part of the device patented as a “curtain cord tightener” by Chauncey C. Parker of Brooklyn, NY:

View attachment 2103956

"Cord-pulley's for curtain fixtures have heretofore been made with a spring, which yields or expands as the cord may slacken or tighten under atmospheric influences. They have, however, been constructed so as to have a very different appearance from the ordinary rack-pulley, and the cost of manufacture was enhanced. The nature of my said invention consists in a pulley-slide having two arms at right angles to each other, one arm receiving the pulley and the other extending up within the coils of a helical spring contained in a sheet-metal case, which arm becomes the guide and sustains the pulley, allowing it to slide with but little friction as the cord may contract or expand."

you are Good! Thanks for ID this one had me stumped for sure.