[Greenbuilding] square head screws

[Chris Green]

Stephen Collette wrote:
> Oh you poor American's. Robertson head screws are the norm up here  
> for woody stuff. Too bad Mr Robertson was Canadian, otherwise you  
> would have the luxury of availability everywhere. 
Henry Ford tried to buy out Robertson so he could use the screws in his 
vehicles and force mechanics to buy the screwdrivers from Ford.. 
Robertson wasn't interested in selling. Ford then hired an engineer to 
design a new screw and the drivers for it. That's the origin of the 
Phillips screw.

Or so the story goes.

The reason they are called square headed screws in a lot of places is 
because the Robertson name is a trademark and can't be used by other 
companies making the screws and bits.

Cheers,

Chris Green.