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2. Mount Washington Cog Railway - Wikipedia

   en.wikipedia.org/wiki/Mount_Washington_Cog_Railway

   The cog, or rack and pinion, system that allows the locomotive to climb Mount Washington. Located in the museum. The rack rail design used is one of Marsh's own inventions, using a ladder-like rack with open bar rungs engaged by the teeth of the cog wheel. This system allows snow and debris to fall through the rack, rather than lodging in it. [41]

3. Cutting tool (machining) - Wikipedia

   en.wikipedia.org/wiki/Cutting_tool_(machining)

   Linear cutting tools include tool bits (single-point cutting tools) and broaches. Rotary cutting tools include drill bits, countersinks and counterbores, taps and dies, reamers, and cold saw blades. Other cutting tools, such as bandsaw blades, hacksaw blades, and fly cutters, combine aspects of linear and rotary motion. The majority of these ...

4. Rack railway - Wikipedia

   en.wikipedia.org/wiki/Rack_railway

   The Pilatus Railway is the steepest rack railway in the world, with a maximum gradient of 48% and an average gradient of 35%. Functioning of the rack and pinion on the Strub system. A rack railway (also rack-and-pinion railway, cog railway, or cogwheel railway) is a steep grade railway with a toothed rack rail, usually between the running rails.

5. Cutting tool material - Wikipedia

   en.wikipedia.org/wiki/Cutting_tool_material

   Cutting tool materials are materials that are used to make cutting tools which are used in machining (drill bits, tool bits, milling cutters, etc.) but not other cutting tools like knives or punches. Cutting tool materials must be harder than the material of the workpiece, even at high temperatures during the process.

6. List of DIN standards - Wikipedia

   en.wikipedia.org/wiki/List_of_DIN_standards

   Turntable ladders and similar fire fighting vehicles; Rescue baskets: Withdrawn: DIN EN 1777: EN 1777: DIN 14702: Turntable ladder DL 16–4, hand operating: Active: DIN 14703: Trailer Ladder AL 16-4: Active: DIN 14710-1: Hook ladder, manufactured using wood; with hinged hook: Withdrawn: DIN EN 1147: EN 1147: DIN 14710-3: Hook light metal ...

7. Shear (sheet metal) - Wikipedia

   en.wikipedia.org/wiki/Shear_(sheet_metal)

   An alligator shear, historically known as a lever shear and sometimes as a crocodile shear, is a metal-cutting shear with a hinged jaw, powered by a flywheel or hydraulic cylinder. Alligator shears are generally set up as stand-alone shears; however, there are types for excavators. The jaw size can range from 4 to 36 in (100 to 910 mm) long.