How to Make A Telegraph Exploring the Magic

How to Make A Telegraph Exploring the Magic of Electricity

Miscellaneous Parts ¼” Hex Bolt Alligator Clips Pan Head Screws Machine Bolt Washers Wood Screws

Parts Enamel Coated Magnet Wire 20 gauge Bell Wire (solid) 18 gauge Sheet Metal Strap

Framework Switch Block 2 ½” x 4 ½” x ¾” Sounder Arm 7 ½” x ¾” x 5/8” ¼” Dowel Rod

6 volt lantern battery

Electrical Tape

Making Electro Magnet STEP 1: Put large washer on hex bolt

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