familiar looking doohickey

[NOLA_Ken]

I was keeping an eye on the dirt piles around the jobsite today looking for bottles and gold coins as usual. Didn't find any of those but this caught my eye mostly because it was circle shaped. I thought it may have been a lantern part and just tossed it in my pocket, but looking at it now I honestly don't know what it is but it definitely looks familiar. the center hole has a key slot which makes me think it was supposed to turn on a shaft... I've been thinking part of the dial from an old timey lamp timer, part of a combination lock, something from a carburetor (choke guts)? But I just don't know other than it looks familiar. It's got a greenish tint under the dirt, so maybe brass?

Quarter for scale... coincidentally the same age as me....

 

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[SkaBa]

Are the rectangle holes uniform? Look different sizes from pick. Also it looks like "notches" on the outer edge.

 

[NOLA_Ken]

Are the rectangle holes uniform? Look different sizes from pick. Also it looks like "notches" on the outer edge.

The holes are the same size, and there are wider areas on the outside... I was thinking maybe it was turned by a gear that engaged the rectangular holes

 

[Kray Gelder]

The plate where all the wires come together under the finial at the top of a round wire bird cage.

 

[Digalotajunk]

May look familiar because it ALMOST looks like an old clock gear. Never seen that before. Nice find!

 

[Plug N Play]

24 holes ... I'm gonna guess a timer of some sort.

 

[NOLA_Ken]

I forgot to add, it's thin, like the thickness of a credit card

 

[Digalotajunk]

This is a part of an early 20th century clock part. It is SLIGHTLY smaller than yours. My vote is a clock part.

 

[old digger]

With the twenty-four notches, I would assume it is for some type of timing for a twenty-four hour timing release gear. Something to that effect.

 

[zombieraccoon]

looks like the gear off of a seed spreader, or anything that may use a similar gearing system.

 

[Tedyoh]

I remember this toy when we were kids...looked like binoculars with a short lenses....you would put these disks in them that had pictures....little lever on the side you'd hit to go to the next picture....reminds me of the center piece of the picture disc.

 

[DCMatt]

I remember this toy when we were kids...looked like binoculars with a short lenses....you would put these disks in them that had pictures....little lever on the side you'd hit to go to the next picture....reminds me of the center piece of the picture disc.

 

[Back-of-the-boat]

45 record adapter?

 

[GeoW]

I was keeping an eye on the dirt piles around the jobsite today looking for bottles and gold coins as usual. Didn't find any of those but this caught my eye mostly because it was circle shaped. I thought it may have been a lantern part and just tossed it in my pocket, but looking at it now I honestly don't know what it is but it definitely looks familiar. the center hole has a key slot which makes me think it was supposed to turn on a shaft... I've been thinking part of the dial from an old timey lamp timer, part of a combination lock, something from a carburetor (choke guts)? But I just don't know other than it looks familiar. It's got a greenish tint under the dirt, so maybe brass?

View attachment 1570377 Quarter for scale... coincidentally the same age as me....

Search "clock parts", click images, you'll find your wheel. [emoji3]

 

[Davers]

View attachment 1570652

I really liked those , Man! i'm getting old. lol

 

[Anduril]

It could be a shaft position sensor or a rotational speed sensor.
A light shines through the holes and you "count" the time it takes for the next hole to come into view of the sensor.

If it's really thin, it's hard to think of this as just a shaft gear... but maybe.