Large hack saw blades?

[wantacoe]

I picked these up recently. They are 14" long, 1 1/4 tall and .065 thick. Apex and Karflex brand. How old are these?
Were they used on a regular hack saw or are they some kind of industrial blade? Thanks for any info.

 

[The Cobbler]

probably used on a power hacksaw , pretty much been replace by band saws now adays

 

[neophyte]

There are still hand held power hacksaws, that use the giant blades, although with a few holes in one end for mounting.
Fein and at least a few other companies make the powered hacksaws, in electric and pneumatic versions.
Powered stationary hacksaws are also still manufactured new.
I presume most of the power hacksaws are made for larger blades, but plenty of the smaller saws still exist, so blades are still sold.
Also, the blades are likely just made in long lengths, and then cut down to the length necessary, so making shorter blades isn’t really that muck of an issue.

 

[RTM]

. How old are these?
Were they used on a regular hack saw or are they some kind of industrial blade?

I have some that were supposedly from a power hacksaw. Supposedly make great knife blades. I have three different tooth patterns, all about that size.

 

[Bobthewrench]

Look up "rail saw". Back in the day railroad crews had big and extra heavy hand-held hacksaw frames that were used with heavier than normal blades to cut the rails out in the field if they had to. Some of these rail-saws even had a handle on each end for two-man use.

 

[RTM]

The Millers Falls catalog rail saw version only used 12” blades. But roughly 4# each.

Millers Falls Tools : Catalogue No. 35 : Millers Falls Co. : Free Download, Borrow, and Streaming : Internet Archive

188 p., illus., 21.6 cm, trade catalog

archive.org

This GP model was what I thought might use a bigger blade, but even smaller at 8 & 9”

Goodell-Pratt Company : Complete Catalog Number 16 : Goodell-Pratt Co. : Free Download, Borrow, and Streaming : Internet Archive

388 p., illus., 13.9 cm, trade catalog

archive.org

 

[LopezBart]

See this web page to check out the variety Starrett offers....

Power Hacksaw Blades

www.starrett.com

 

[Milton Shaw]

I had an uncle that worked for Railroads in Newport News during the 40, 50, 60, 70's and he got those blades and used them to make custom made kitchen butcher blades. They came in an all hardened blade an a bimetal blade and the hardened were the only ones he could use. I ended up with some from him and made some knives 40 years or so ago and still have those somewhere but not findable. They were so hard no files would sharpen them and really took carbide or diamond blades to remove much metal and np way to drill for rivets other than the one that came in the end.

 

[tool_scrounge]

Smaller Power Hacksaw Blade. At 4 teeth per inch that would be for cutting thicker material.

 

[Old tool guy]

Look up "rail saw". Back in the day railroad crews had big and extra heavy hand-held hacksaw frames that were used with heavier than normal blades to cut the rails out in the field if they had to. Some of these rail-saws even had a handle on each end for two-man use.

Like this? Millers Falls No 24 vs a pedestrian Great Neck.
.

 

[FTG-05]

Back in the early 90's I made a couple knife blades out of two big hack saw blades. I didn't re-heat treat, just used them as-is. Worked ok a knives. They have long since been gone as someone decided they needed them more than I did.