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  2. Gas tungsten arc welding - Wikipedia

    en.wikipedia.org/wiki/Gas_tungsten_arc_welding

    GTAW weld area. Manual gas tungsten arc welding is a relatively difficult welding method, due to the coordination required by the welder. Similar to torch welding, GTAW normally requires two hands, since most applications require that the welder manually feed a filler metal into the weld area with one hand while manipulating the welding torch in the other.

  3. Oscillating cylinder steam engine - Wikipedia

    en.wikipedia.org/wiki/Oscillating_cylinder_steam...

    An oscillating cylinder engine cannot be reversed by means of the valve linkage (as in a normal fixed cylinder) because there is none. Reversing of the engine can be achieved by reversing the steam connections between inlet and exhaust or, in the case of small engines, by shifting the trunnion pivot point so that the port in the cylinder lines up with a different pair of ports in the port face.

  4. Back-up beeper - Wikipedia

    en.wikipedia.org/wiki/Back-up_beeper

    Back-up beepers or an observer are required by OSHA for earth-moving vehicles with an obstructed view to the rear and no one on the ground to help guide the driver. [9] OSHA regulation 29 CFR Part 1926.601(b)(4) requires "a reverse signal alarm audible above surrounding noise level", but only when the motor vehicle has "an obstructed view to the rear".

  5. AOL

    search.aol.com

    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  6. Wagon-wheel effect - Wikipedia

    en.wikipedia.org/wiki/Wagon-wheel_effect

    The wagon-wheel effect is exploited in some engineering tasks, such as adjusting the timing of an engine. This is also done in some turntables for vinyl records. Since the pitch of music reproduction depends on rotation speed, these models have regular markings on the side of the rotating platter.

  7. Engine turning - Wikipedia

    en.wikipedia.org/wiki/Engine_turning

    The perlée pattern on the metal panels is one type of engine turning. Engine turning is a form of ornamental turning. The finishing technique may use lathes or engines to produce a pattern. Aluminium is often the metal chosen to decorate. The technique has been used in various industries, including aircraft and document verification.

  8. Target-type thrust reversal - Wikipedia

    en.wikipedia.org/wiki/Target-type_thrust_reversal

    Video of a target-type thrust reverser in operation. Target-type thrust reversal (also called bucket thrust reversal or clamshell thrust reversal [1]) is a deceleration method when an aircraft lands. Like other types of thrust reversals, it temporarily diverts the engine exhaust forward to provide deceleration. This type of thrust-reverser is ...

  9. Video shows frightening moment truck loses load of lumber ...

    www.aol.com/video-shows-frightening-moment-truck...

    In a dashcam video captured in Harrisburg, Pennsylvania on Tuesday, one driver experienced a thankfully not deadly, but still frightening ordeal when a load of construction materials fell from a ...