PhotoMan wrote:

"Waldo" wrote in message
.. .


Not true. Robertson screws have been used in Canada for well
over sixty years. Apparently Henry Ford was interested in
them for his assembly line but wanted full and exclusive
ownership of the design. Robertson, the inventor, would not
go for that and as a consequence Ford declined to use them.
Then along came the Phillips design and it became the
American sweetheart because it was invented by an American
and was somewhat superior to the common slotted screw.


Somewhat? Ever try to start a slotted head wood screw without a pilot hole?
With a power driver? With one hand? Every slotted head screw I come across
is scrapped. I don't have ONE to my name.


Yup! And the Robertson is superior to the Phillips probably
as much as the Phillips is to the slotted, IMHO. That's why
anything I buy that includes Phillips head screws for
assembly has them replaced with Robertsons. I can probably
make you a good deal if your interested in buying a coffee
can full of assorted Phillips head screws.