How to Make A Telegraph Exploring the Magic of Electricity.
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Transcript of How to Make A Telegraph Exploring the Magic of Electricity.
How to Make A Telegraph
Exploring the Magic of Electricity
Miscellaneous Parts
Alligator Clips
Washers
¼” Hex Bolt
Wood Screws
Pan Head Screws
Machine Bolt
Parts Enamel Coated Magnet Wire
20 gauge
Bell Wire (solid)
18 gauge
Sheet Metal Strap
Framework
¼” Dowel Rod
Sounder Arm
7 ½” x ¾” x 5/8”
Switch Block
2 ½” x 4 ½” x ¾”
Telegraph Frame3 ¾” x 6 ¾” x ¾”
3 ¾” x 6 ¾” x ¾”
3
¾” x 4
½” x
¾”
3
¾” x 4
½” x
¾”
¼” Hole
3 ¾” x ¾” x ¾”
2 ¼” x 2” x ¾”
8 - 1 ½’ wood screws
7/8” x 3 1/8” – cut out
6 volt lantern battery
Electrical Tape
STEP 1: Put large washer on hex bolt
Making Electro Magnet
STEP 2: Wrap hex bolt with electrical tape
Leave ½” unwrapped at bottom
STEP 3: Wind magnet wire around bolt
Keep windings neat, tight
5-6 layers of magnet wire
STEP 4: Sandpaper end of magnet wire
(sand away ½” enamel)
STEP 5: Screw bolt in top of framework
Finished Electro magnet
Making Telegraph Switch
STEP 1:
Cut two pieces of black bell wire, equal lengths
STEP 2: Strip wire ½”
STEP 3: Make a hook in wire
STEP 4: Fasten wire and strap metal to wood
STEP 5: Screw into place
STEP 6: Fasten bell wire at other end of switch block
STEP 7: Screw in place
Completed Telegraph Switch
Attaching alligator clip
STEP 1: Insert bell wire into alligator clip
STEP 2: Wrap bell wire around screw
STEP 3: Tighten screw on alligator clip
STEP 4: Add alligator clips to both bell wires
Attaching Electro Magnet to Telegraph switch
STEP 1: Fasten magnet wire, bell wire to framework
STEP 2: Screw in place
STEP 3: Fasten magnet wire, bell wire to framework
Completed wiring to telegraph switch
Completed Electro magnet wiring
Making Sounder Arm
7 ½” x ¾” x 5/8”
STEP 1: Screw in bolt
STEP 2: Insert sounder arm into framework
STEP 3: Insert dowel rod into framework
Completed telegraph sounder
Place top on telegraph sounder
Hinge top to telegraph sounder
Hinge 1 ½ x 1 ½”
Leave 1/8” gap between electro magnet and bolt
Completed Telegraph