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The Fisher Body company, which made the car bodies for the Ford Motor Company, was one of Robertson's first customers and used over 700 Robertson screws in its Model T car. [12] Henry Ford , after finding that the screw saved him about 2 hours of work for each car, attempted to get an exclusive licence for the use and manufacture of the ...
Robertson screwdrivers are easy to use one-handed, because the tapered socket tends to retain the screw, even if it is shaken. [3]: 85–86 They also allow the use of angled screwdrivers and trim-head screws. The socket-headed Robertson screws are self-centering and reduce cam out. They also stop a power tool when set, and can be more easily ...
One Good Turn: A Natural History of the Screwdriver and the Screw is a book published in 2000 by Canadian architect, professor and writer Witold Rybczynski. [1]The idea for the book came in 1999 when an editor at The New York Times Magazine asked Rybczynski to write a short essay on the best and most useful common tool of the previous 1000 years.
Example of a combination drive system. At center, a Torx T25/slot Dual Drive screw; at left, a 3 ⁄ 16-inch (4.8 mm) flat-blade screwdriver; at right, a T25 screwdriver. The screw will accept either screwdriver. Some screws have heads designed to accommodate more than one kind of driver, sometimes referred to as combo-head or combi-head.
Proper use requires that the screwdriver's tip engage the head of a screw of the same size and type designation as the screwdriver tip. Screwdriver tips are available in a wide variety of types and sizes (List of screw drives). The two most common are the simple 'blade'-type for slotted screws, and Phillips, generically called "cross-recess ...
4. Customized Sofa. Gater transforms sofas and couches with low-lift projects that don't require any DIY experience. An easy way to customize IKEA sofas and chairs is to purchase slipcovers.