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2. Carriage bolt - Wikipedia

   en.wikipedia.org/wiki/Carriage_bolt

   Plow bolt. The plow bolt or plough bolt is a flush-fitting carriage bolt, whose head is countersunk beneath the surface of the material. The plow bolt was devised to hold replaceable plowshares to the moldboards of iron plows. The share, the fastest-wearing part of the plow, would be replaced several times over the life of the plow.

3. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   plow bolt: plough bolt: A plow bolt is bolt similar to a carriage bolt, except the head is flat or concave, and the underside of the head is a cone designed to fit in a countersunk recess. Plow bolts provide a smooth surface for attaching a plow moldboard to its beam, where a raised head would suffer from soil abrasion. There are many ...

4. Moline Plow Company - Wikipedia

   en.wikipedia.org/wiki/Moline_Plow_Company

   Moline Plow considered the Allis-Chalmers Model 6-12, a very similar tractor, to be a patent-infringing copy. [4] Also around 1916, Moline Plow entered the automobile business with the Stephens brand, named after one of the founders of Moline Plow. Around 1918 or 1919, the Willys-Overland Company purchased a majority interest in the Moline Plow ...

5. National Register of Historic Places listings in Columbus, Ohio

   en.wikipedia.org/wiki/National_Register_of...

   Berry Brothers Bolt Works. February 19, 1988 : 350 E. 1st Ave. ... Columbus Carriage Manufacturing Co. - Seagrave Co. Buildings ... Ohio Moline Plow Company Building:

6. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   A lathe of 1871, equipped with leadscrew and change gears for single-point screw-cutting A Brown & Sharpe single-spindle screw machine. Fasteners had become widespread involving concepts such as dowels and pins, wedging, mortises and tenons, dovetails, nailing (with or without clenching the nail ends), forge welding, and many kinds of binding with cord made of leather or fiber, using many ...

7. Plowshare - Wikipedia

   en.wikipedia.org/wiki/Plowshare

   Components of a simple drawn plow: 1) beam; 2) three point hitch; 3) height regulator; 4) coulter (or knife) 5) chisel 6) plowshare 7) moldboard Instrument for cleaning a plowshare used at a mill near Horažďovice, Czech Republic. In agriculture, a plowshare or ploughshare (UK; / ˈ p l aʊ ʃ ɛər /) is a component of a plow (or plough).