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Anyone know about ring saws?

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John in MA

09-22-2001 16:58:23

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I just got an old ring saw that I'd like to know more about. By ring saw, I don't mean glass cutting. It's like a cahinsaw, except it uses a large rigng-shaped blade with carbides around the parimeter.

Mine looks to be from the '60s, possibly using a Mac engine. It's made by "Ring Saws Inc,". That's all the data on it. The blade is driven by a wheel that seems to be made out of brake pad material. Kind of fibrous. Anyway, this one need replacing.

Does anyone know about these saws? How about general history, or why they were used instead of a chainsaw?

Thanks.

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Franz

09-22-2001 18:47:57

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Re: Anyone know about ring saws? in reply to John in MA, 09-22-2001 16:58:23

If you like your body parts attached, hang it on the wall and forget it. The idea was a halfassed contrivance for cutting brush. It mounts on a bar with an arbour on the end, like a chop saw. Several saw manufacturers also made a chain bar that looked like half of a bowtie. The trouble with the ring saw, if it's dropped it can fracture, and you might not know it, till you spin it up and chunks fly into your body.

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John in MA

09-22-2001 19:33:51

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Re: Re: Anyone know about ring saws? in reply to Franz, 09-22-2001 18:47:57

Thanks, I don't plan on doing any cutting with it. This thing looks like it would get between me and my limbs. I just like to have my wall hangers in running shape.

This one actually is different than the other ones I've seen. They had the blade on the end of an arm with a driveshaft in it. Is that the kind you're talking about? This one has the blade right at the clutch housing, like a chainsaw. It actually is mounted inline with the driveshaft. The blade and all the controls are mounted 90 degrees to the way a chainsaw's are. The outside of the clutch drum is covered with the friction material.

Thanks again. Still looking for one of those power bow saws...

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Franz

09-23-2001 16:15:32

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Re: Re: Re: Anyone know about ring saws? in reply to John in MA, 09-22-2001 19:33:51

If I'm readin right, what you're describing is one strange bird. I've seen a similar blade set up on the Partner k-12 type saw. They removed the chainsaw bar, and replaced it with a casting about a foot long that used a v belt on one side, driving a blade. That seems to have been the original design for the small pavement saws everybody makes today.
That one you have definitely sounds unique, can you post a picture of this gem?

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John in MA

09-23-2001 17:14:02

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Re: Re: Re: Re: Anyone know about ring saws? in reply to Franz, 09-23-2001 16:15:32

I know what you're talking about. Mine is a little like a K-12 saw, except there is no arm. The ring blade is driven directly by the clutch drum, which has a conical surface and a cam on the shaft. It's really too strange to describe. The ring blade is horizontal when the saw is set down. The saw body seems to be US made, but the ring holding assembly is made in Italy.

I'll try to get photos but it could take a while.

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Kevin C

09-23-2001 18:09:36

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Re: Re: Re: Re: Re: Anyone know about ring saws? in reply to John in MA, 09-23-2001 17:14:02

John,
Your "Ring Saw" was designed for the Fire service, and was used in the early to mid 70's.
The concept was to have an outer circular ring blade do the roof cutting. The shingles and tar paper on most roof tops will load up a common full faced saw blade, and will have a lot less effect on the hollow centered ring type blade.
Our Hook & Ladder company had one, and as I remember it cut much faster and much deeper than the K 12 saws of the day. I don't know if you can get parts today but if my memory serves me right, it was a soft orange color on the casing. Try a fire equipment company for parts. Good Luck, Kevin C NY

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John in MA

09-25-2001 18:41:12

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Re: Re: Re: Re: Re: Re: Anyone know about ring saws? in reply to Kevin C, 09-23-2001 18:09:36

Thanks for the help. The engine's body is dark orange and the blade-holding assembly is blue. The blader holder also says it's made in Rome, Italy. Any idea why they stopped using these things? I had never seen one like this until I found it. Looks dangerous as heck.

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Franz

09-23-2001 21:38:45

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Re: Re: Re: Re: Re: Re: Anyone know about ring saws? in reply to Kevin C, 09-23-2001 18:09:36

Nothing like getting the straight dope from a guy who has lugged one up a ladder and used it.
I know what you mean about K-12s loading up, I have a few of them, had to buy the whole pallet in the fire dept auction to get one for cutting up pallets. Those dang blades didn't even have scrap metal value when the fire dept was done with them.

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