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Slaymaker Lock Company was a manufacturer of locks founded in 1888, which for a time made steam-powered automobiles. The company invented many unique inexpensive locks and were famous for their warded padlocks.
A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.
The 351 or 351C were used in some 4000, 5000, and 6000 series trucks from 1962 to 1972 and the 351E was used in the 1000–3500 series trucks from 1966 to 1969. [13] The 351, 351C, and 351M engines were medium duty truck engines, while the 351E was a light-duty engine – basically a 351M without the oil-driven governors.
The 425.6 cubic inches (7.0 L) with a bore and stroke of 4.25 by 5 inches (108 mm × 127 mm) GMC inline six appeared in 1940s 4x4 Cab Over Engine (COE) trucks made in Pontiac, MI. Power ratings for 1955 were 190 HP @ 3200 rpm; torque 350 lb ft @ 1000 rpm. It also appeared in large GMC trucks in the 1950s ending in 1955.
The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.
The modern bored cylindrical lock was invented by the German-born engineer Walter Schlage [4] in 1923 [5], as an innovation on a patent filed in 1920 [6] for a lock whose installation required a face bore and surface rabbet, simplifying door preparation compared to a traditional mortise lock.
Pressing a button on the key unlocks all of the car doors. Another button locks the car. In 1980, Ford Motor Company introduced an external keypad-type keyless entry system, wherein the driver entered a numeric combination —either pre-programmed at the factory or one programmed by the owner— to unlock the car without the key.
Bilock is a high-security keying system designed and manufactured by Australian Lock Company. It is advertised to be bump-proof , pick-resistant , and drill -resistant. The Bilock cylinder uses a patented locking system with two sidebars, 12 pins, and 12 springs.