Ice saws have a wood T handle and are like 5 to six foot long.Reaperman your saw is for logging and thus why you would find it in the woods.

Some do and some don't. Look at the teeth.

In my opinion.Second one is not an ice saw.First one yes.I know that some people claim the second one is as you will see on the internet.Think about how it would be used.Ice was sawed in big blocks and the saw had to be long.

Reapermans two pics are the same saw blade

I have a couple ice saws that look like that. One with a t-handle and one with what I guess you would say a regular handle...

What is a hay-knife used for or how is it used may be a better question ....

The hay knife was used to cut the hay when hay was put up loose, in stacks. It may also have been used to cut the large bales from a hay press. This was quite a contraption.

"That all changed in the mid-1800s, with invention of the first mechanical hay press. Most of the earliest hay presses were stationary units built into a barn and extending two to three stories into the hayloft. Generally, a team of horses was used to raise a press weight, which was then dropped to compress the hay. Other versions used a horse- or mule-powered sweep at the bottom of the press to turn a jackscrew or a geared press.

Unlike later hay presses, these permanent models often made bales weighing as much as 300 pounds, secured by as many as five strands of wire or twine. One such press was built by P.K. Dederick’s Sons, Albany, N.Y., in 1843. Another, invented in 1843 by Samuel Hewitt, Switzerland County, Ohio, is on display at a landscape company in Lawrenceburg, Ind. Marketed as the Mormon Beater Hay Press, it was powered by a mule attached to a sweep at the bottom of the press. The mule was then led counter-clockwise to lift a 1,000-pound wooden weight to the third-floor level via a pulley.

On the second story, workers pitched loose hay into the baling compartment, where a hinged door opened to the side of the press. Once the compartment was filled with hay, the door was closed by counterweights. The attendant then pulled the trip lever, which allowed the weight to drop into the baling compartment and compress the hay. It usually took six or seven cycles to form a 300-pound bale."

Interesting......appreciate it

surverors , lower knife is a hay knife , I have seen them used, probably about 70 years ago. old243

Thanks for the input guys. Again the saw was found in the middle of a pretty thick oak woods that had bad storm damage 10 years ago. I've been slowly cleaning up the mess and developed the area into a food plot. Thats why I was tilling up the area with a tractor/tiller. I found the blade as I was walking around the area after tilling, so theirs no telling how deep it was buried or if the tiller buried it. Anyhow, I thought it was a pretty cool find. Naturally, I wanted to know a bit about it if possible. With all of the above input, I'm as confused as ever Too bad there isnt any stamping on the blade.

Most lake ice cutting occurred when the ice was 8-12 inches thick, so the blocks were manageable .
Then they would fit into the ice chest when used.

Here is some ice harvesting tools.

https://en.wikipedia.org/wiki/Ice_trade#/media/File:Selection_of_ice_tools.jpg

A good article on ice trade harvesting on wikipedia.

Try crosscutsawyer for ID.

For commercial harvesting of ice, yes they were long. I would imagine homeowners that cut there own out of the local pond modified them shorter for that use.