The real bad old-time WW chutes were the ones that had a guilliotine affair. This consisted of a "u" up and a "u" down. The bottom one stayed in place, and the top one came down on top of a cow's neck. A cow was just about guaranteed to choke down in this outfit, and when they did, the dying cow would fall right on top of the lever that you needed to get to so that she could be released.

When Peach Blossom and I were starting out, I bought one for $50 from a rancher that had bought a new chute. After we killed the first cow in that piece of junk, I bought another new $800 chute, figuring it to be an "investment" instead of an "expenditure." It was money well spent.
My dad had a WW chute for many years. He bought it out at the Denver Stock Show back in the late '70's. It came with a palpation cage and a curved adjustable alley. We ran a lot of cattle through it. This was certainly an improvement over the guilliotine deal, as it had a standard up and down neck catch. It was designed to be "self catching," but also had a stationary handle on it so that a person could pull the handle around if a critter was going through too fast.
One time a cow started to choke down before we were done processing her. I turned loose the head catch to give her some air, but I held onto the handle hoping to keep her in until the other vaccinations were given. Somehow my elbow hung up on one of the vertical bars. As the cow fell out of the chute, my right thumb hung up on the handle and was bent clear back until it almost touched my arm. Man but that hurt! I just knew my hand was broken, but luckily it turned out to be just a bad sprain. I always figured that my lifetime of drinking too much chocolate milk at least helped keep the calcium level up high enough that I healed fast from that and other wrecks through the years. :wink:
We have since replaced the WW squeeze chute with a Priefert, but the WW palpation cage and curved alleyway still get regular and frequent use. They have stood the test of time fairly well.