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  • WordNet 3.6
    • n armature coil in which voltage is induced by motion through a magnetic field
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Webster's Revised Unabridged Dictionary
    • Armature (Magnetism) A piece of soft iron used to connect the two poles of a magnet, or electro-magnet, in order to complete the circuit, or to receive and apply the magnetic force. In the ordinary horseshoe magnet, it serves to prevent the dissipation of the magnetic force.
    • Armature Armor; whatever is worn or used for the protection and defense of the body, esp. the protective outfit of some animals and plants.
    • Armature (Arch) Iron bars or framing employed for the consolidation of a building, as in sustaining slender columns, holding up canopies, etc.
    • Armature (Elec) That moving part of a dynamo or electric generator in which a current is induced by a moving through a magnetic field, or, in an electric motor, the part through which the applied current moves, thereby generating torque. The armature usually consists of a series of coils or groups of insulated conductors surrounding a core of iron.
    • ***
Century Dictionary and Cyclopedia
    • n armature Military equipment; especially, defensive armor.
    • n armature In zoology and anatomy: Any part or organ of an animal serving as a means of defense or offense.
    • n armature Any apparatus or set of organs without reference to defense; an equipment; an appanage: as, the genital or the anal armature.
    • n armature In botany, the hairs, prickles, etc., covering an organ.
    • n armature A body of armed troops.
    • n armature In architecture, any system of bracing in timber or metal, as the iron rods used to sustain slender columns, to hold up canopies, etc. The term is applied especially to the iron framework by which leadlights are secured in medieval windows.
    • n armature A piece of soft iron applied simply by contact to the two poles of a magnet or electromagnet as a means of maintaining the magnetic power undiminished. In dynamo-electric machines (which see, under electric) the armature is a bar or ring of soft iron, around which coils of insulated copper wire have been wound. This armature is rotated rapidly in the field of the adjacent electromagnets. In the Holtz electric machine the armature is a strip of varnished paper attached to the edge of the openings or windows of the fixed plate. Also called armor.
    • n armature That part of an electric machine in which electric power is generated (generator) or consumed (motor). Sometimes the rotating element is called armature, irrespective of its function. See field, 13.
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Chambers's Twentieth Century Dictionary
    • n Armature armour: any apparatus for defence: a piece of iron connecting the poles of a bent magnet
    • ***


Webster's Revised Unabridged Dictionary
L. armatura, fr. armare, to arm: cf. F. armature,. See Arm, v. t., Armor
Chambers's Twentieth Century Dictionary
Through Fr. from L. arma; cog. with Arm.


In literature:

I refer to the form given in 1857 to the rotating armature by Dr. Werner Siemens, of Berlin.
"Fragments of science, V. 1-2" by John Tyndall
They differ in the armature of their cones and in their seed-wings.
"The Genus Pinus" by George Russell Shaw
The voltage then depends on the speed at which the armature is driven.
"Electricity for the farm" by Frederick Irving Anderson
To this pin one end of the armature winding is connected, whilst the other end is connected to the engine frame.
"Gas and Oil Engines, Simply Explained" by Walter C. Runciman
Soft iron should be used for yokes and armatures, as this is the best conductor of lines of magnetic force.
"How Two Boys Made Their Own Electrical Apparatus" by Thomas M. (Thomas Matthew) St. John
The action of the hammer is precisely the same as that of the armature of an electric bell.
"How it Works" by Archibald Williams
A small pinion or gear is mounted upon the armature-shaft of the motor.
"Boys' Book of Model Boats" by Raymond Francis Yates
It is this pressure that holds an armature to the magnet.
"The Machinery of the Universe" by Amos Emerson Dolbear
First see that the movable armature of the cutout moves freely and does not bind at the pivot.
"The Automobile Storage Battery" by O. A. Witte
Now you want a small armature to open and close the current.
"The Galaxy" by Various
It is formed by an armature carrying coils and by strong electromagnets.
"Letters of a Radio-Engineer to His Son" by John Mills
The armature is then drawn towards the magnet with rapid acceleration, carrying the lever D with it.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5" by Various
There is no armature, and no glands, and the whole tract can only be divided into an oesophagus and an intestine.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7" by Various
Each of the relay armatures in Fig.
"Cyclopedia of Telephony and Telegraphy, Vol. 2" by Kempster Miller
The armature A is attracted by M against the stop X, and this attraction is assisted by the spring T, which was under increased tension.
"Wireless Transmission of Photographs" by Marcus J. Martin
The good-natured old fellow was not long in bending up a U magnet of soft iron and forging out an armature.
"Electricity and Magnetism" by Elisha Gray
After I had inserted my instrument into the circuit, the delicate little armature was at once strongly attracted to the magnet.
"The Boy Spy" by Joseph Kerby
Then the magnet lets go and the armature springs back, making contact once more and setting the current flowing again.
"The Romance of War Inventions" by Thomas W. Corbin
We have next to consider the effect of the addition of more armature loops in the case of dynamos which give a unidirectional E.M.F.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9" by Various
The pendulum carried also an armature, and an electro-magnet was placed near the armature.
"The Progress of Invention in the Nineteenth Century." by Edward W. Byrn

In news:

An electromagnetic lock is essentially an electromagnet in a housing mounted on the door frame, and a steel armature mounted on the door.
When the magnet is energized, it bonds to the armature and locks the door.
Before retiring in 1978, she was an armature winder at Erie General Electric for more than 32 years.
LAS VEGAS – Sony's new XBA (balanced armature) earphone lineup for 2012 contains 11 different models, with prices ranging from $79.99 to $499.99.
Lunacy, 2010 Tristin Lowe, American (born 1966) Felt, PVC vinyl inflatable armature Dimensions variable.
At first, the artist used steel and aluminum as armatures to support his thermoplastic sculptures, but in recent years the melted and hardened plastic has become its own structure.
Those creating pieces for the project are given the same basic armature, or metal framework, upon which to build their herons .
6 With the motor case removed, the armature is exposed.
Once the nylon idler gear is removed, the armature comes right out.
Magnetic lock offers 2,000 lbs holding force, surface mount armature bracket.
Pittman Series 8000 brush-commutated dc motors feature a 7-slot skewed armature design to minimize magnetic cogging (reluctance torque) and promote smooth and quiet operation.
These quirky cars have a horizontal "pancake" armature and an array of gears that transfer torque to the rear wheels.
) through behind-the-scenes photography, storyboards, and rare armatures and puppets.

In science:

Example 8 (Accelerated life test of insulation for generator armature bars ).
A Review of Accelerated Test Models
Meeker (2003) discuss an ALT for a new mica-based insulation design for generator armature bars (GABs).
A Review of Accelerated Test Models
Fig. 1.3. Se in una superficie S all'interno di un plasma c’è uno spostamento di carica, tale che si formano due strati a distanza ξ, viene a crearsi un campo elettrico come un condensatore sulle cui armature c’è una densità di carica ζ = Q / S = N ·e ·S ·ξ / S .
Ionospheric HF radio propagation in problems and computer assignments