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Hitting a rock with an old plow ?

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Ebbsspeed

04-10-2005 18:05:54

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Before there were trip bottoms and things like that, what happened when you hit a big rock with a plow? Did it just bang the machine to a halt, or was some kind of shear device (Chain link?)used to let the plow disconnect from the tractor to keep Mr. Farmer from flipping out of the seat? I'm in the market for a plow for my Model B, and want to make sure that I don't break something (machine OR body) if I hit an immoveable underground object. Thanks!

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RayP(MI)

04-11-2005 17:31:17

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

Our old JD B with 2 bottom trailer type plow had a spring loaded hitch, and a chain that attached to the plow frame. Other end of chain attached to a mechanism that snapped the hand clutch out, when you hit the rock. You only had to have that clutch handle catch you in the knee a few times before you disconnected that stupid chain! Plow point was probably broke anyway! Lost a lotta points to rocks before we got 'em all dug out. Son and I removed one heckofa rock last spring that sat practically vertical in it's hole. Found more than one plowpoint under a ledge on the side of the rock. Points were from plow that my dad used in the early 50's.

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RayP(MI)

04-11-2005 17:29:41

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

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Hugh MacKay

04-11-2005 04:02:05

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

Ebbspeed: Many of your older small tractors with mounted plows had very little protection. Some had spring cushion in the pull bar. Contrary to Jerry's belief, Ferguson's first draft controled plow gave no protection from hitting rocks and the like. You've got to remember we were plowing quite shallow and with very little horse power per bottom in those days. Owners weighted their tractors just enough to pull the plow, thus the tractor spun out very easily. Also in those days and with these mounted plows we were probably doing less than 2 mph, and that reduced the shock greatly. I've seen many of thse setups in my day on 25 hp or less tractors. They spin out or stall quite quickly.

I have a Farmall 130 with factory one point fast hitch. I have a 2x12 plow with no protection, also a newer 1x16 with trip beam. I can't pull the 2 bottom plow in any gear but 1st, 2.3 mph. With one set of wheel weights and no chloride the tractor will either spin out or stall. The front end will not come up, unless I am lifting on plow a bit to gain traction. In that senario, it spins out anyhow. By my lifting on plow to gain traction, I am manually doing the same thing as Ferguson's draft control. My control is not quite as accurate.

I believe your Allis B will fall in same catergory with many other small tractors. Just don't add too much traction. If going with a trailer plow look for one with trip hitch.

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NIndianaDan

04-10-2005 22:20:50

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

Spring release hitch. When the pull over comes the spring tension, the hitch lets loose. Spring tension is adjustable. If you ever go to plow with one, make sure it is not rusted & stuck.

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Jerry/MT

04-10-2005 21:39:39

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

I imagine that some of them without release devices(like trip beams,and spring releases, etc) just tippped the tractor over and the poor guy in the seat "bought the farm". Supposedly that's what led Harry Fergson to the Ferguson System of draft control.

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Michael Soldan

04-10-2005 18:42:19

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

I-H drag plows had a tension hitch through a clevis, when you hit a big stone it let go of the tractor and you had to back up and hitch up again. You also had to make sure that you didn't tie the trip rope to the seat or a light or it ripped them off. Dad always had a soft wire hook on the bottom of the seat and it bent back and let go when your plow disconnected....Mike in Exeter Ontario

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Hugh MacKay

04-11-2005 03:25:07

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Re: Hitting a rock with an old plow ? in reply to Michael Soldan, 04-10-2005 18:42:19

Michael: My dad always had a weight on end of the rope and he let it hang over light bar on Farmall H. This was the No.8 plow 2x14 with trip hitch. Usually this weight was a nut and it would keep rope tight enough so it was always by his thigh. One day he went out to plow garden, just a few furrows, and for some reason just threw the rope over his right knee. The plow triped, rope in it's course of coming up from between his legs caused the weight to hit him right in the groin. (OUCH) Never did that one again.

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Jimmy King

04-10-2005 21:43:48

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Re: Hitting a rock with an old plow ? in reply to Michael Soldan, 04-10-2005 18:42:19

Michael, Dad had a David Bradley 6 ft. drag type disc harrow. Our land is very rocky with flint rock from gravel to wash tub size. a lot of them from fist to grapefruit size. We always tied the rope to the seat spring on the H with a wire, but some times in the real rocky ground the hitch pin ( usually a 3/4 inch bolt 7 or 8 inches long ) would jump out and jerk the spring out of the seat, that will let you down in a hurry.

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mattd

04-10-2005 18:37:43

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

i believe some jd plows had a spring loaded hitch that came undone when it hit somthing. the hitch was hooked to a wheel that was hooked to the spring. its hard to explain without looking at it.

matt

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04-10-2005 18:32:54

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Re: Hitting a rock with an old plow ? in reply to Ebbsspeed, 04-10-2005 18:05:54

Been my experience that when you hit something with a 'fixed' plow- "something" will give. Either it will break, bend, or hang up, depends on how fast you're going and how big the 'something' is.

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Pooh Bear

04-11-2005 02:36:36

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Re: Hitting a rock with an old plow ? in reply to FH, 04-10-2005 18:32:54

I got shear pins in my plow.
If I snag something hard enough the pin will shear off
and the plow will just flip up and back.
Then I just hafta put a new pin it and start again.

Pooh Bear

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