# Bauhaus-Universität Weimar

### Volltext New apparatus and methods (4)

Titel:
New apparatus and methods
Person:
Scripture, Edward W.
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit28735/3/
```7«
E. IV. Scripture,
lamp cord (6 feet, or 2 meters) to a socket plug; the other ends are
scraped, bound with thread and left free.
To use the battery a plug wire is inserted in any lamp socket on the
supply circuit. The free ends are brought to the binding-posts F, and F.
A 110-volt lamp of the required ampérage is placed in A. Thus for an
electric fork a 1-ampère lamp will be used, for a spark coil a 4-ampôre
lamp, etc. A low voltage lamp of the same or greater ampérage than
the one in A is inserted in B. Thus for the electric fork the lamp must
carry at least 1 ampère in order to correspond with the lamp in A ; it
may conveniently be of 10 volts. For the spark coil a lamp of 8 volts 4
ampères would be suitable.
A plug wire is now placed in C, and the switch D is snapped to turn
the current on. At the ends of the wires from the plug in C a current
can now be drawn whose maximum intensity is practically the same as
that in the lamp A and whose tension is practically the same as that at
the poles of the lamp B. In the case of the electric fork it would be a
current of 10 volts 1 ampère ; for the spark coil it would be 8 volts 4
ampères.
The lamp battery behaves like any other battery. Increased resistance
in the external current decreases the intensity of the current delivered,
etc. For circuits of great resistance a lamp of higher voltage may be
used in B. For larger currents than 4 ampères the sockets at A and B
are doubled, as it is not advisable to use the ordinary socket for a cur¬
rent of more than 4 ampères on a no-volt circuit.
The character of the lamp batteries can be seen from the following tables.
Table I.
Lamps used in the■ batteries.
Large Lamps.
Small Lamps.
Mark
Mark
on Lamp.
on i.amp.
A
no volts
100 c. p. 4 ampères.
m
8 volts
4
ampères.
B
110 volts
100 c. p. 3^ ampères.
n
8 volts
4
ampères.
C
no volts
64 c. p.
0
8 volts
4
ampères.
D
110 volts
32 c. p.
P
12 volts
3
ampères.
E
no volts
16 c. p.
q
12 volts
2
ampères.
F
no volts
8 c. p.
r
12 volts
I
ampère.
s
12 volts
0.7
ampère.
t
10 volts
I
ampère.
u
6 volts
I
ampère.
V
20 volts
16
c. p.
```

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