Batten.
A strip of wood grooved longitudinally for holding wires in wiring
apartments for electric light or power. In use they are fastened to the
wall, grooves inward, or else grooves outward, with the wires lying in
the grooves and covered with the covering strip. For two wire work each
batten contains two grooves; for the three wire system it contains three
grooves.
Synonym--Moulding.
Battery.
A combination of parts or elements for the production of electrical
action. The term is principally applied to voltaic batteries, but there
are also magnetic batteries, batteries of Leyden jars, and other
combinations, described in their places, which come under this category.
[Transcriber's note: A group of similar items such as questions,
machines, parts, guns, or electric cells.]
Battery, Acetic Acid.
A battery whose active solution or excitant is acetic acid or vinegar.
This acid has been used by Pulvermacher in his medical battery, as being
a substance found in every household in the form of vinegar. It is now
but little used.
Battery, Alum.
A battery using as excitant a solution of alum. This battery has had
some application for electric clocks, but only to a limited extent.
Fig. 38. BALLOON OR FLASK BATTERY.
Battery, Aluminum.
A battery in which aluminum is the negative plate and aluminum sulphate
the excitant. It is mounted like the gravity battery. Its electro-motive
force is 0.2 volt.