This new page describes my mattock tool, a kind of pry bar for moving heavy machinery by hand:
- posted
19 years ago
This new page describes my mattock tool, a kind of pry bar for moving heavy machinery by hand:
May I suggest sharpening the tip of the tongue so it can be driven under an object setting on a floor. Your tool looks a little like the "bird's foot" tool I picked up from an abandonded railroad track several years go.
Paul
I've heard these called "Johnson bars". Interesting to see your take on it. Contrast with another rcm'er-made bar at
This is what we called "Johnson Bars"
I had to agree.
No, that's a different item in both design and function. The J-bar is designed to roll with minimum lift height. Mine is designed to stay put and lift high enough to get 1" roller-bars underneath.
In Minnesota, land of many Johnsons, the Johnson bar is basicially a hooked bar lacking the Kinch improvement of the load-spreading roller. The degree of hook defines the range of lift. My J-bar has enough hook to lift a mill so pipes can be placed to roll it around.
Load-spreading roller is a good idea, but it's still line contact on the floor. Another approach is to use a load-spreading plate of
1/4 or thicker steel under the Jbar.
I'm not surprised the handle stub bent. But I am surprised that those glommy welds didn't bust. Be careful under heavy loads, Richard. Even a drop of one inch on an old Cincy#2 will hurt you, the floor, or the machine!
BTW... many of the old machines had a recess here and there on the base skirt under which to get a purchase for prying. Even if you couldn't do it in one lift, you could get an edge up with a flattened pry bar, then shim it up until you got the big Johnson under it.
LLoyd
LLoyd
Thus my suggestion to insert a cushion of hard polyethylene. This spreads the force well below concrete's compression strength. Or a sandwich including a steel plate; the principle is one of "impedance matching".
I've used the Johnson type, wooden handled with 2 cast iron wheels. It's one of those very effective basic tool designs of yesteryear. I suppose the wheels help prevent slippage, in the way that wheels on a floor jack allow it to move as the load is lifted.
Maybe Johnson bar contributed to the expression A real man would lift that with his dick
WB .............
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