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  2. Railroad switch - Wikipedia

    en.wikipedia.org/wiki/Railroad_switch

    A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.

  3. Renfe Class 120 / 121 - Wikipedia

    en.wikipedia.org/wiki/Renfe_Class_120_/_121

    Tractive forces are transmitted by a drag pivot pin. [ 1 ] The bogies incorporate CAF's BRAVA ( Bogie de Rodadura de Ancho Variable Autopropulsado [ 3 ] ) system which allows gauge-changing without stopping and operating speeds of up to 275 km/h (171 mph) [ 11 ] The maximum axleload is 15.6 tonnes (15.4 long tons; 17.2 short tons).

  4. Spring pin - Wikipedia

    en.wikipedia.org/wiki/Spring_pin

    Slotted spring pin (1) and washer (2) used to secure a shaft (3). A spring pin (also called tension pin or roll pin) is a mechanical fastener that secures the position of two or more parts of a machine relative to each other. Spring pins have a body diameter which is larger than the diameter of the hole they are intended for, and a chamfer on ...

  5. UIC classification of locomotive axle arrangements - Wikipedia

    en.wikipedia.org/wiki/UIC_classification_of...

    Articulated locomotives can be indicated by bracketing the front power unit — for example, the Union Pacific Big Boy, 4-8-8-4 in Whyte notation, is (2′D)D2′ in UIC notation. Plus sign "+" The locomotive or multiple unit consists of permanently coupled but mechanically separate traction units.

  6. Medium Girder Bridge - Wikipedia

    en.wikipedia.org/wiki/Medium_Girder_Bridge

    The UK or short ramps are 264 lb (120 kg) and the US or long ramps are 400 lb (180 kg). Each type provides an approach to the bridge, 7 are required at each end. UK ramps are used for single storey only. Deck unit — 9'1" long, 1' 5 1 ⁄ 4" wide, 6 7 ⁄ 8" high, weight 163 lb (74 kg) it requires 2 soldiers to carry. This component fills in ...

  7. Pinterest (PINS) Q4 2024 Earnings Call Transcript - AOL

    www.aol.com/pinterest-pins-q4-2024-earnings...

    Image source: The Motley Fool. Pinterest (NYSE: PINS) Q4 2024 Earnings Call Feb 06, 2025, 4:30 p.m. ET. Contents: Prepared Remarks. Questions and Answers. Call ...

  8. Mobile shelving - Wikipedia

    en.wikipedia.org/wiki/Mobile_shelving

    Mobile shelving, mobile aisle shelving, compactus, roller racking, or rolling stack, are terms applied to shelving or storage units fitted with wheeled traction systems. Units can be closely packed when access is not required, but can be readily moved to open up an aisle to allow access.

  9. Tamping machine - Wikipedia

    en.wikipedia.org/wiki/Tamping_machine

    Jackson 6700 switch tamping machine A Plasser & Theurer 09-16 CSM Tamper / Liner A MATISA tamper at Keighley in February 2017 Customer VolkerRail. A tamping machine or ballast tamper, informally simply a tamper, is a self-propelled, rail-mounted machine used to pack (or tamp) the track ballast under railway tracks to make the tracks and roadbed more durable and level.