cliff wright (c.c.wright@paradise.net.nz) wrote:
> Richard Bonner wrote:
> > I hate Phillips screws! They should all be Robertson!
> > 
> >          Richard Bonner

> ...what are "ROBERTSON" screw heads? Are they perhaps those rather nice 
> square drive ones that I've used with wood screws?
>
> Cliff Wright.

***   Yes. They were invented by the PL Robertson company in Quebec a
hundred years ago. They are the best because the sockets are deep and have
more of a taper than the screwdriver tip. Thus, the driver wedges itself
into the screw socket to the point where one can hold the driver & screw
in the screw-down position without it falling out! 

   Unfortunately, with the end of the patent rights, came second-rate
drivers and screws that are frequently not to spec. As a result, screws
often cannot be held by the driver in that position.

   They are supposed to come in only five sizes and are supposed to be
colour-coded:

0 Yellow
1 Green
2 Red
3 Black
4 Orange

   ...However, the crappy companies have not always adhered to that. As
well, some have those awful combination screws that take a slot, Phillips
or Robertson driver - none of them well.  GRRRRRRRRRR!!!!

        Richard Bonner
http://www.chebucto.ca/~ak621/DOS/