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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. Screwdriver - Wikipedia

   en.wikipedia.org/wiki/Screwdriver

   Each Phillips screwdriver size also has a related shank diameter. The driver has a 57° point and tapered, unsharp (rounded) flutes. The #1 and smaller bits come to a blunt point, but the #2 and above have no point, but rather a nearly squared-off tip, making each size incompatible with the other.

4. Henry F. Phillips - Wikipedia

   en.wikipedia.org/wiki/Henry_F._Phillips

   Phillips screw head. Henry Frank Phillips (June 4, 1889 – April 13, 1958) was an American businessman from Portland, Oregon. The Phillips-head ("crosshead") screw and screwdriver are named after him. [1] The importance of the crosshead screw design lies in its self-centering property, useful on automated production lines that use powered ...

5. Henry Phillips - Wikipedia

   en.wikipedia.org/wiki/Henry_Phillips

   Henry Phillips most commonly refers to: Henry F. Phillips (1890–1958), American businessman for which the Phillips-head screw and screwdriver is named Henry Phillips (comedian) (born 1969), American songwriter and humorist

6. Cam out - Wikipedia

   en.wikipedia.org/wiki/Cam_out

   The Phillips screwdriver design has a tendency to cam out during operation due to angled contact surfaces, which create an axial force pushing the driver out of the recess as torque is applied. Despite popular belief, [2] there is no clear evidence that this was a deliberate design feature. When the original patent application was filed in 1933 ...

7. NYPD’s $400K-a-year top earner Quathisha Epps is retiring ...

   www.aol.com/nypd-400k-top-earner-quathisha...

   “There is no way she was going to go out on patrol,” one source told The Post. Epps made more than $400,000 last year. X / @FinestHoopsNYC. Epps, 51, also faced an internal affairs ...