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A Park Tool bicycle work stand. The founders of Park Tool along with James E. Johnson developed a clamping device on their original bike repair stand, for which they received a United States Patent in 1976. [3] The company has applied for and has been granted many patents since then, including a pizza cutter shaped like a penny-farthing.
A modern cant hook. A log driver using a peavey. A cant hook or pike or a hooked pike is a traditional logging tool consisting of a wooden lever handle with a movable metal hook called a dog at one end, used for handling and turning logs and cants, especially in sawmills.
The design resembles the external bottom bracket designs marketed by FSA, RaceFace and Shimano. The modern versions used the same sealed bearing size (6805-RS, 25 mm inner diameter, 37 mm outer diameter) and the original mounting tool fits. The crank had intricately CNC machined wide hollow crank arms made of two halves glued together.
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Dogs can have the maternal instincts to start grooming their puppies, consume their puppies' feces, and protect their puppies, likely due to their hormonal state. [ 124 ] [ 125 ] While male-parent dogs can show more disinterested behaviour toward their own puppies, [ 126 ] most can play with the young pups as they would with other dogs or ...
The bearing was composed of two sets of cylindrical rollers, one set larger in diameter than the other, that fit on flats machined on the tapered axle-skein. In 1898, Henry Timken was awarded a patent [2] for the tapered roller bearing which used conical rollers. At the time, Timken was a carriage-maker in St. Louis and held three patents for ...
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A bench dog is a removable clamp used on a woodworking workbench to hold an item fast while being worked. It is characteristically used in concert with an adjustable dog on a bench vise , allowing an item compressed between the two to be held fast on each end, and if offset in both directions.