So that if your escape bunker's hatch is 3 ft thick, or up against a wall, it can swing both ways. Multiple pivot axis, simply brilliant. Sad that I never thought of it myself, disappointed, depressed, disillusioned. ' Gee, why didn't I think of that ? '
Everybody be running, ' OMG ! The bull jumped into the crowd ! '
That differentiates the more humane bull teasing of Thera's matadors of the 17th century bc. See, they had to jump over the charging bull, superstars and sports heroes of their day. Dangerous play, teasing bulls, and why it's fun to ' provoke the barnyard animals. ' ' I'll hold the horns, you ride the bull ! ' ' Yeah sure, the bull might cause bodily harm, but I think I'm faster and smarter than the bull. ' Famous last words of a bull jumper on that volcanic island in the Aegean Sea.
As a kid in the '50s, there was a sand bank on the crest of a hill, at the side of the road, far to the north. Ice age sand, perfectly clean, about forty feet high. Tobogganing down on corrugated cardboard packing boxes from the grocery store, because we could fit in the boxes. Great mems.
A happy place.
[This message has been edited by Valkrie9 (edited 03-11-2023).]
The jumping bull... That 'little dog' is a blue heeler (sometimes called an Australian cow dog) and heelers are named that for a reason. Nice gentle friendly dogs until their owner gives them an order and they turn into a buzz saw. Agility and quickness wins out over bigger opponents. Cattle, sheep, bigger heavier dogs are no match for them.
The double hinge gates have been around for a long time out in the Southwestern US and other places. In open range counties and states , there were 'bump gates' where a car (back when cars had real front bumpers) would drive up to a closed gate, bump the gate and it could be pushed open by the vehicle and it worked same going either direction because of that type hinge. I was around 13-14 first time I saw one.
[This message has been edited by maryjane (edited 08-21-2022).]
Same as the bottom but the pins each have a flat flange welded on top of them...like a big washer, and most importantly, a support cable that runs diagonally from the top corner at the far end of the gate , up to a tall pole the hinge support is on. It's this cable and it's precise length that allows (forces) the gate to swing back to a closed position eah time it is opened.
In some cases, the top part is inverted, pins facing downward to prevent livestock from just putting their heads under the gate and lifting it off the pins. They don't work well for a gate that is operated (opened/closed) frequently, as the plate under the bottom hinge wears
[This message has been edited by maryjane (edited 08-22-2022).]
,,,and most importantly, a support cable that runs diagonally from the top corner at the far end of the gate , up to a tall pole the hinge support is on. It's this cable and it's precise length that allows (forces) the gate to swing back to a closed position each time it is opened.
Ah, that's the (previously) untold secret... a support cable! I knew there had to be something to keep the gate from simply tipping downwards and falling off the top hinge!
CORRECTION! As I looked into this more, it isn't the same as the bump gates I've seen and needs no top cable for support or to close the gate. When installing a traditional gate with customary hinges, there are 2 separate geometric planes you have to be concerned with.
The sole purpose of this hinge is to make it self closing by changing a plane. The top hinge is simply a traditional strap hinge over pin with a little slack in the hole.
As this gate is opened, the bottom pivot shifts off to one side in relation to the top pin and the far end of the gate will rise. At more than a few degrees swing open, gravity makes the gate want to swing back to closed position. The groove of the bottom hinge located opposite the side the gate was opened also serves as a stop when closing as the gate reaches equilibrium.
CORRECTION!...The sole purpose of this hinge is to make it self closing by changing a plane. The top hinge is simply a traditional strap hinge over pin with a little slack in the hole.
So there's no magic... or even a cable... there's just a regular strap hinge at the top. I'm glad I asked though, as it confirms my initial suspicion that the top hinge would definitely need to be different than the bottom hinge pictured above. Thanks again, Don.
Bessie, at a disadvantage, found herself proffered up to any passing bull, Hernando, the love of her life desperately trying to get over the far side fence.
Buffalo Snow Blows. Why, I remember that big storm, I was westbound on the 401, east of London, when I came upon that Ford van, out in the farm field, a quarter mile off the highway. There were no tracks, just a van out in the field, in two feet of snow, drifted up the side of the van. They were still inside, more than 12 hours after the storm had passed, running the engine to keep warm, flashing their lights, blinkers. Epic snow. A set of tracks like that would have been so useful.
[This message has been edited by Valkrie9 (edited 03-05-2023).]