spindle drive
51Grinding (abrasive cutting) — Sketch of how abrasive particles in a grinding wheel remove material from a workpiece. Grinding is an abrasive machining process that uses a grinding wheel as the cutting tool. A wide variety of machines are used for grinding: Hand cranked knife… …
52turbine — /terr bin, buyn/, n. any of various machines having a rotor, usually with vanes or blades, driven by the pressure, momentum, or reactive thrust of a moving fluid, as steam, water, hot gases, or air, either occurring in the form of free jets or as …
53Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
54Drill bit shank — The shank is the part of a drill bit grasped by the chuck of a drill. The cutting edges of the drill bit are at one end, and the shank is at the other. Different styles of shank/chuck combination deliver different performance, such as allowing… …
55Capital, Volume I — is the first of three volumes in Karl Marx s monumental work, Das Kapital, and the only volume to be published during his lifetime. Originally published in 1867, Marx s aim in Capital, Volume I is to uncover and explain the laws specific to the… …
56History of laptops — Before laptop/notebook computers were technically feasible, similar ideas had been proposed, most notably Alan Kay s Dynabook concept, developed at Xerox PARC in the early 1970s.The first commercially available portable computer was the Osborne 1 …
57Cotton mill — A cotton mill is a factory that houses spinning and weaving machinery. Typically built between 1775 and 1930, mills spun cotton which was an important product during the Industrial Revolution. Cotton mills, and the mechanisation of the spinning… …
58Machine taper — A machine taper is a system for securing cutting bits and other accessories to a machine tool s spindle. Contents 1 Explanation 2 Use 3 Types 3.1 Morse 3.1.1 …
59LNER Gresley Classes A1 and A3 — Disambiguation: LNER Class A1, LNER Thompson Class A1/1, LNER Peppercorn Class A1 LNER Gresley Classes A1 and A3[ …
60Wood router — A router is a woodworking tool used to rout out (hollow out) an area in the face of a piece of wood. It was a tool particularly used by pattern makers and staircase makers and consisted of a broad based wooden hand plane with a narrow blade… …
