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Another example is the Milwaukee Road "R08" nail, where the "R" is an unknown treatment or type of wood, and the numbers indicate the year it was installed. [3] Date nail use has dropped dramatically since the mid-20th century and the advent of more modern maintenance of way equipment. Date nails on American railroads were phased out in the 1970s.
Chester Greenwood (December 4, 1858 – July 5, 1937) was an American engineer and inventor, known for inventing the earmuffs in 1873. [1] He reportedly came up with the idea while ice skating and he asked his grandmother to sew tufts of fur between loops of wire. [2]
The tendency for wood that is being cut to direct the saw parallel to its grain. lath. Also called a slat. A thin, narrow strip of straight-grained wood, typically arranged side-by-side with others and used to support roof shingles or tiles, as a backing material for plaster or stucco in walls and ceilings, or in lattice and trellis frameworks ...
One of the first forms of bridge, those of timber have been used since ancient times. Wooden bridges could be a deck-only structure or a deck with a roof. Wooden bridges were often a single span, but could be of multiple spans. A trestle bridge is a bridge composed of a number of short spans. Each supporting frame is a bent.
Halsnøy boat, detail of the bow. A sewn boat is a type of wooden boat which has its planks sewn, stitched, tied, or bound together with natural fibre rope (e.g. coir in the Indian Ocean [1]) tendons or flexible wood, such as roots and willow branches. [2]
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A patent illustration of the Osann portable sewing machine. A typical early 20th century sewing machine, like the Singer 27, was designed to be mounted in a treadle or table, and though reduced-size models with hand cranks and wooden cases were introduced, their weight strains the meaning of the word 'portable.'