Rare old half gate mechanism

[pluey200]

Hartzel Rd, New Haven, IN

https://www.google.com/maps/@41.0348737 ... 312!8i6656

I remember finding an old picture from the 50s with a gate mechanism that looked exactly like this, and the person who responded said they were a predecessor to WABCO triangle gates, if I remember correctly

[freebrickproductions]

Yep, those are WABCO AL70s, only with the original counterweight arms (either the old ones or the triangle ones) having long since been replaced.