Mechanical Definitions |
Pairing Element : Any one part of two machine parts which
is connected to permit motion is called pairing element. |
Pancake Engine: It is a compact engine which has cylinders
arranged readily. |
Pan Crusher : It is a solids-reduction device with one
or more grinding wheels or millers revolving in a pan containing
the material to be pulverized. Either the pan or the millers
may be stationary with the other driven. |
Paper Machine: It is a synchronized series of mechanical
devices used to transform a dilute suspension of cellulose fibers
into a dry sheet of paper. |
Parallel Linkage : It is a linkage system in which reciprocating
motion is amplified. |
Parsons-stage Steam Turbine : It is a steam turbine with
a reaction-type stage in which the pressure drop occurs partially
across the stationary nozzles and partly across the rotating
blades. |
Paver : Any one of several machines which moves along
the road, carry and lay paving material. |
Pebble Mill : It is a solids size-reduction device which
has a cylindrical or conical shell rotating on a horizontal
axis. Also it has a grinding medium such as balls of flint,
steel, or porcelain. |
Pepdoor : It is a small door in a furnace having a glass
opening by which combustion may be observed. |
Pellet Mill : It is a type of mill which is used to create
cylindrical pellets from a mixture of dry powdered feedstock
as flour, sawdust, or grass, and a wet ingredient as molasses
or steam. The pellets are made by compacting the mash or meal
into many small holes in a die. |
Pendulum Saw : It is a circular saw which swings in a
vertical arc for crosscuts. |
Penetration Rate : The actual rate of penetration of
drilling tools is called penetration rate. |
Percussion Bit : It is a rock-drilling tool having chisel-like
cutting edges, which when driven by impacts against a rock surface
which drills a hole by a chipping action. |
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