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  2. Rapper (electrostatic precipitation) - Wikipedia

    en.wikipedia.org/wiki/Rapper_(electrostatic...

    Hammers are connected to a rotating shaft. As they revolve, the hammers collide with a beam, causing a vibratory shock to dislodge caked-on dust. The hammer’s weight and mounting arm length control the intensity of the rapping. Adjusting the speed of the rotating shaft alters the frequency of rapping.

  3. Hammer mill - Wikipedia

    en.wikipedia.org/wiki/Hammer_mill

    The shaft, or 'helve', of the hammer was pivoted in the middle and the hammer head was lifted by the action of cams set on a rotating camshaft that periodically depressed the end of the shaft. As it rose and fell, the head of the hammer described an arc. The face of the hammer was made of iron for durability. [2]

  4. Trip hammer - Wikipedia

    en.wikipedia.org/wiki/Trip_hammer

    A trip hammer, also known as a tilt hammer or helve hammer, is a massive powered hammer. Traditional uses of trip hammers include pounding, decorticating and polishing of grain in agriculture . In mining , trip hammers were used for crushing metal ores into small pieces, although a stamp mill was more usual for this.

  5. Shaft sinking - Wikipedia

    en.wikipedia.org/wiki/Shaft_sinking

    Shaft mining or shaft sinking is the action of excavating a mine shaft from the top down, where there is initially no access to the bottom. [1] Shallow shafts , typically sunk for civil engineering projects, differ greatly in execution method from deep shafts, typically sunk for mining projects.

  6. Rotary hammer - Wikipedia

    en.wikipedia.org/wiki/Rotary_hammer

    Their smooth shanks would be pounded loose from the tool's chuck in a few seconds. Rotary hammers require special bits with an SDS shank (which can stand for Slotted Drive Shaft or Special Direct System), which locks into the rotary hammer without the need for a chuck. The hammer strikes the bit directly, instead of the chuck holding the bit.

  7. Slide hammer - Wikipedia

    en.wikipedia.org/wiki/Slide_Hammer

    A slide hammer is a tool that attaches to an object needing to be pulled and transmits an impact force to the object without striking the object itself. Slide hammers typically consist of a long metal shaft with an attachment point at one end, a heavy weight that can slide along the shaft , and a stop for the weight to impact on the end ...

  8. Hammer - Wikipedia

    en.wikipedia.org/wiki/Hammer

    Shown here are: A. Ball-peen hammer B. Straight-peen hammer C. Cross-peen hammer The claw of a carpenter's hammer is frequently used to remove nails. A large hammer-like tool is a maul (sometimes called a "beetle"), a wood- or rubber-headed hammer is a mallet , and a hammer-like tool with a cutting blade is usually called a hatchet .

  9. Magmatic foliation - Wikipedia

    en.wikipedia.org/wiki/Magmatic_foliation

    The nearly upright magmatic (slightly South dipping) flow foliation parallels the hammer shaft. Magmatic foliation is a term in geology, for foliation in granitoids that form by magmatic flow, "submagmatic flow," by high-temperature solid-state deformation and moderate- to low-temperature solid-state deformation. [1] Remember, granitoids are ...