Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!think.com!mintaka!ogicse!milton!nntp.uoregon.edu!oregon!ckeele
From: ckeele@oregon.uoregon.edu
Newsgroups: comp.robotics
Subject: Re: CALM (computer-aided lawn mowing)
Message-ID: <21214.2869462a@oregon.uoregon.edu>
Date: 27 Jun 91 08:58:02 GMT
Article-I.D.: oregon.21214.2869462a
References: <1991Jun20.192334.24623@auto-trol.com> <1991Jun21.212216.20188@src.honeywell.com>
Distribution: na,usa
Organization: University of Oregon
Lines: 18

For safety, I think that Jacobson or some such company made a lawn mower
that used a rubber or plastic blade.  This was about 10 - 15 years ago,
but you may still be able to find blades, or mowers.

If I remember right, it had a solid plastic center section about 15" in
diameter, and 3 or 4 replacable rubber blades attached to it.  

I think that you were supposed to be able to put your foot into the blade 
and not get hurt, although I never tried it.  It probably would hurt some.

I don't think that it worked very well, but it probably would be a necessary
safety feature of the CALM system.

Clifford Keele
ckeele@donald.uoregon.edu

Well, at least I think I remember seeing one of the above described beasts,
but it was a long time ago when I was about 10, so it is hard to be sure.