G'day
Max and all,
Many thanks for presenting and explaining these things.
I feel this is an important topic, and I know I have hi-jacked the original
topic - so much of this topic will be moved to
Tech Talk The patent mentions when cutting a fine lawn you are better off having the cutter plate parallel with the ground.
I note that when I read the patent.
I guess it indicates that, with the addition of single-point height
adjusters, a
compromise was made that set a single angle of attack.
I mean, a 1/4" [6mm] height difference between front and rear blade
tips is only about a degree or so.
Max, I have said on these forums that the single-point adjuster was
an Australian invention - and I think Minter were the first.
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=51528Do you have any thoughts on that?
That's a great story on boomerangs.
Just like the Wright brothers, who observed how birds fly, out
first Australians must have perfected the boomerang after decades
- or centuries - of observation, trial and error.
And I mean, what kid didn't stick their arm out of a moving car and
rotate hands for angle of attack. My mother thought I was being silly!
Dad knew - and understood ...
I saw one patent which had an addition to the cutter assembly, to stop long grass ,vines ,etc from wrapping around the cutters and cutter bar shaft .
Max, the best idea I ever saw for this was on a
Yazoo,
made in North America's deep South. We sold a lot of those here.
It was a metal cup placed above the blade holder.
The top edge was serrated to cut off grass bents that would
wrap around the spindle. It kept grass away from bearings and seal.
Simple and effective!
Cheers----------------------------
Jack
