Chicago Fire Landfill Site.

[mcbullion]

We found this item amongst dirt and mud that was being excavated in the 3rd sub-basement of the building we work construction in that is going up on this corner:

http://maps.google.com/maps?q=india...ent=firefox-a&um=1&ie=UTF-8&sa=N&hl=en&tab=wl

While working we've found alot of ceramic plate fragments, wooden (furniture possibly), metal cans, horse shoe. We know that all of the land in this area was formed with debris left by the Chicago Fire of 1871.

It looks like some kind of nail - does anyone know what it might be?
Thanks for any help you can provide.

 

[spartacus53]

Welcome to T-net I don't know what it is, but if you want a quick answer you need to show your find against another object so they know the actual size. If it is small use a coin, larger, drop a ruler next to it. Good luck and HH

 

[johnnyi]

Mcbullion, hard to tell much without dimensions (length , thickness, possible material (steel or iron)). I'm sure you've considered a locking pin with a drift end. Need some size to get a clue.

 

[baspinall]

Looks like a blade lock for a hand plane.

 

[Mountineer]

I believe it's a wedged locking pin for "Simons" type cement form. They are used to connect various size panels together.

 

[kirkwannem]

Definatly a concrete form pin. The slot is for a wedge to be drove in. They use hundreds of these for each project that requires forms. Similar to site listed but very common pin. http://www.wallties.com/pins_and_wedges.htm#straight

 

[traderoftreasures]

Definatly a concrete form pin. The slot is for a wedge to be drove in. They use hundreds of these for each project that requires forms. Similar to site listed but very common pin. http://www.wallties.com/pins_and_wedges.htm#straight

when i worked concrete the pins were round and the wedges had no holes. i think maybe it did go to a old stanley plane...... right where the blade rode

 

[DCMatt]

As stated - concrete form wedge pin. Nice ID guys.

DCMatt

 

[randall61]

that is a pin that goes through a wedge on wall form for concrete walls.

 

[allen]

looks like we have an i.d !!

 

[haybudden2]

Mountaineer is exactly right. It is a Symons concrete form pin.
The pin is driven in to lock the forms together.
Another pin is inserted into the long slit and driven home to
lock the pin in.
These pins are made of very high carbon steel.
The Symons Co. is from Chicago, I think these pins have been
used since the early 50's.

Hay2

 

[traderoftreasures]

well i believe you guys. i just hadn't seen them. these are the ones i had to use for years.... those must be rich folks forms