what is a rock drill machine?
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A rock drill is exactly what the name suggests. They are either pneumatic ( air driven) or electric ( smaller applications) and are used to drill holes in rock for any number of reasons. Usually used in construction. In mines, they are used to make the cavity to house the TNT for detonation.
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The Romans were master machine builders.\n\n"They lifted heavy stones using cranes that were worked by windlasses or treadmills or the backs of men, they dredged harbors, emptied lakes, and drained swamps"\n\nI expect that they used more than one technique.  Dragging scooping sleds over the bottom when it was smooth, dragging nets when less smooth.   I imagine some sort of conveyor belt or waterwheel would have been used as well.
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a rock is a material that is very hard, usually found on the ground, and rocks means that you are excited or happpy about something, or that you really like the topic!
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Grinding up materials between the gears (i.e. a paper shredder)\n\nAny transfer of motion in a device which, by design, dictates that the energy exerted be moved to a different, more practical location (i.e. a series of ceiling fans connected to one another or a locking system in a safe)\n\nReinforcement and/or stablization of movement needed for accuarcy purposes or to prevent slipage/overspin (i.e. a clock or analog stopwatch).
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A lathe, a drill press, and a milling machine would be a good start, although how you plan to use them when you don't even know the names for them is a bit of a mystery to me.  Try Harbor Freight or Northern Tools.\n\nhttp://www.harborfreight.com/\nhttp://www.northerntool.com/
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Based on the definitions given,\nMiners/geologists (those who seek new deposits)\nWell drillers (oil and water so they can react as equipment hits rock)\nNatural Resource officers (Geology shapes the physical world and the resources available)
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Brooms (brushes)\nThe curling broom is used by the sweepers to sweep the ice surface in front of the rock. Aggressive sweeping in front of the rock momentarily melts the ice, which lessens friction, therefore lessening the deceleration of the rock, while straightening the trajectory of the rock. The broom can also be used to clean debris off the ice. The skip will also hold the broom at the opposite end of the rink from the delivering player to show the deliverer where to aim the rock.\n\nIn earlier days, brooms were made of corn strands and were similar to household brooms. Brushes were used primarily by elderly curlers as a substitute for corn brooms. Today, brushes have replaced traditional corn brooms at every level of curling, but are universally referred to as brooms. Brooms are also used by some curlers as a balancing aide during delivery of the stone.
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the chisel end is for splitting rocks down a plain of weakness the flat end is mostly used with a chisel . Be aware of the local bylaws when rock tapping as in some places the are laws forbidding damage to cliff and rock in any way whatever and can lead to a fine.In the UK sites of scientific interest are all protected as are a lot of site in the US.
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any rotery or hammer drill can be used to drill ice. Some 24" hammer drills have been used to recover trapped miners underground.
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Hand-held VSR drills use a geared motor to vary the speed. A drill press with a belt system uses a single speed AC motor and a system of different sized pulleys to vary the speed. If you want to vary the speed without moving the belt, you'll have to do it electronically.\n\nThere are speed controllers for AC motors on the market. Here's a link to a footswitch type.
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hi,\n\nwhat  you  could do  is go  to  the below mentioned site and register  yourself , and place your requirement  , people who  have the equipment will contact  you  and help you.\nthe site address is\nhttp://www.drillersclub.com/members/equipment/\n\nThis is all i  could find!!!!!!!! :)
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I like the Moccasin machine by U. S. Products\n\nYou can find all the major manufacturing links on the website listed below.  Just click on the word, equipment on the right side.\nFree site for people in the cleaning business.
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All rigs nowadays use rotary drilling technology.  As the hole is drilled, drilling mud is pumped through the drill pipe, out through the bit and up the hole to the surface.  This is to stop the hole from collapsing as it gets deeper.\n\nOn land, rigs really only vary in size, sophistication in pipe handling technology, and horse power.  \n\nThe marine environment is a bit more varied.  The drilling equipment can be mounted a swamp barge for shallow water (as used in the Niger Delta for example).  \n\nNext in scale would be a jack-up rig.  These can be extremely large (Maersk rigs are some of the largest in the world) but are limited by water depth owing to the length of the jack-up legs.  These rigs are towed into position, then the legs are lowered into the sea bed.\n\nDeeper water requires the use of a semi-submersible rig (semi-sub for short).  These rigs are sailed into position, and then partially submerge in order to gain great stability.  They also require the use of anchors.\n\nIn the deepest water, drill ships are used.  They cannot anchor because of the water depth.  They stay in position by the use of GPS in combination with powerful thrusters.  The ship has to be able to rotate around the drill string in order to face into the weather.\n\nAll of these rig types are not the same as production platforms.  Although these have drilling capability, they also produce oil and/or gas.  Mobile drilling rigs just drill and test the boreholes: they do not produce hydrocarbons.   \n\nA short summary.  Try websites such as Transocean or Glomar drilling companies for some pictures and more detailed explanation.
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In the sense of a motor the terminology is from the the early days when wire fibers were used then later found that a brush made of carbon can deliver the power without wearing out the commutator. The carbon brush being of softer material would easily be replaced when worn down.\n\ncheck out the following link:
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RS-1 is the name given to one of the first ever Rock Shox MTB fork.\n\nRS-1 Tuning, would be the tuning of that particular fork.\n\nCheers!
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When you dig deep into the earth/mud, you will hit ROCK - that is Bedrock.
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It appears that you have asked about the synchronous motors that are used to run flourmills. \n\nThese motors can be initiated at a particular RPM only. For that, a small induction motor runs the synchronous motor and brings it to a particular RPM. As soon as it happens, the main synchronous motor is switched on.\n\nYou might have seen a lever switch for this setup… the operator operates the lever to the upper position for starting induction motor… then on assessing that the motor has reached the minimum required RPM he brings down the lever to the downward position for switching on the main synchronous motor.