Bauhaus-Universität Weimar

Titel:
Optic Projection: Principles, Installation and Use of the Magic Lantern, Projection Microscope, Reflecting Lantern, Moving Picture Machine
Person:
Gage, Henry Simon and Henry Phelps Gage
PURL:
https://digitalesammlungen.uni-weimar.de/viewer/image/lit39438/23/
Ch. I] MAGIC LANTERN WITH DIRECT CURRENT 
IS 
Outlet 
Lamp House 
Condenser 
Supply Wires 
Arc Lamp 
Water 
Arc 
V A ? 
Block 2 
Block 
1 t I» r, . v'm'i^g^ 
\w2 Rheostat w3 
Board 
Fig. 3. Arc Lamp for Projection, with Wiring, Switches 
and Fuses 
Supply Wires The conductors from the supply to the outlet box. 
Outlet Box. An iron box receiving the supply wires at one end and giving 
exit to them from the other. 
Fuses 6f Switch Two cartridge fuses in the circuit and a double-pole knife 
switch tieyond the fuses. The fuses arc present to avoid accident in case of a 
short circuit and the switch to turn the current on or off as desired. 
P IF R Polarized wall receptacle. This is composted of two parts as 
shown, the part on the wall to receive the supply wires from the outlet box, 
and the cap to connect with the table switch. The metal connections of the 
cap with the receptacle are in planes at right angles so that the cap can be put 
in place only in one way, hence the polarity is always the same. 
Arc Supply The wires connecting the cap of the wall receptacle and the 
table switch. 
Switch The doublc-i>olc, knife switch for turning the current on and off the 
arc lamp. 
IF/ The wire extending from the switch to the upper carbon of the arc 
lamp. 
W2 The wire extending from the switch to the rheostat. 
IF.? The wire extending from the rheostat to the lower carlion of the arc 
lamp.
        

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