Unidentified Adjustable Wrench

[Jordehwa]

Hello, this is my first post besides introductions. As the name suggests I found a rusty but working adjustable wrench while digging through a tool box of my dads and decided to clean it up. I know I should have tried to identify it before cleaning but I spaced it off.
Anyway after I cleaned it up, I looked for it online but couldn't find anything on it which made me worry that I may have cleaned up an antique without knowing. As you will see in the pics the wrench is totally unmarked. If any of you could help me identify or age this wrench that would be great.
Thanks in advance! - Jordan.

[Jordehwa]

First three Pictures in original post are before I cleaned the rust off, these three are obviously after.

[Northwoods]

Your pictures made me curious about spot welding.  Found this.

...resistance welding processes were developed, including spot welding, seam welding, projection welding and flash butt welding. Elihu Thompson originated resistance welding. His patents were dated 1885-1900.

[coolford]

Welcome from the Missouri Ozarks. I also have one of those wrenches and have seen a few on e-bay, but don't have a name.

[mvwcnews]

The mode of assembly & other details about this one (see patent no. 1,386,217 -- http://www.datamp.org/patents/displayPatent.php?number=1386217&typeCode=0 ) have gotten some people thinking it may have been produced by Park Metalware at Orchard Park, NY

[Jordehwa]

Thanks everyone! Checked out the Park Metalware, though I didn't find my exact wrench the roller on some of them does look very much like mine. Not really wanting to sell it or anything but I'm just curious if this could have any value or is it just a cool old wrench? 

[coolford]

Best I can remember, they usually sell for $10.00 to $15.00 on e-bay.