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2. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.

3. Robertson screw - Wikipedia

   en.wikipedia.org/wiki/Robertson_screw

   Screwdriver bits in different sizes for Robertson screws. When Henry Ford tried the Robertson screws, he found that they saved considerable time in Model T production. When Robertson refused to license the design, Ford realized that the supply of screws would not be guaranteed, and chose to limit their use to his Canadian division. [4] [5] [6]

4. Talk:List of screw drives - Wikipedia

   en.wikipedia.org/wiki/Talk:List_of_screw_drives

   Screwdriver manufacturers have claimed to have solve the problem of combination screws by offering special screwdrivers that will fit the combination screws. For example Klein offers "Combo-Tip Driver 7314" without telling which type of combination screw it is intended to fit. [ 1 ]

5. Yankee screwdriver - Wikipedia

   en.wikipedia.org/wiki/Yankee_screwdriver

   The trade name "Yankee" screwdriver was first marketed by North Brothers Manufacturing Company in ≈16 April 1895, with the No. ≠130 spiral ratchet screwdriver. Yankee soon became and still is a well-known name in automatic spiral ratchet screwdrivers , with several other models, and model improvements patented by North Bros. over a 40-year ...

6. How too much fructose may feed cancer tumors - AOL

   www.aol.com/too-much-fructose-may-feed-070000700...

   Dietary fructose may promote tumor growth, according to research in animal models of melanoma, breast cancer, and cervical cancer.

7. Torx - Wikipedia

   en.wikipedia.org/wiki/Torx

   Torx (pronounced / t ɔːr k s /) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 [1] by Camcar Textron. [ a ] A popular generic name for the drive is star , as in star screwdriver or star bits .