1. Exploring the Magic of Electricity
How to Make A Telegraph
Exploring the Magic of Electricity

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

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

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

5. Telegraph Frame 3 ¾” x 6 ¾” x ¾” 7/8” x 3 1/8” – cut out
¼” Hole
2 ¼” x 2” x ¾”
8 - 1 ½’ wood screws
3 ¾” x 6 ¾” x ¾”

6. 6 volt lantern battery

7. Electrical Tape

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

9. STEP 2: Wrap hex bolt with electrical tape
Leave ½” unwrapped at bottom

11. STEP 3: Wind magnet wire around bolt

13. Keep windings neat, tight
5-6 layers of magnet wire

14. STEP 4: Sandpaper end of magnet wire
(sand away ½” enamel)

16. STEP 5: Screw bolt in top of framework

17. Finished Electro magnet

18. Making Telegraph Switch

19. Cut two pieces of black bell wire, equal lengths
STEP 1:
Cut two pieces of black bell wire, equal lengths

20. STEP 2: Strip wire ½”

22. STEP 3: Make a hook in wire

24. STEP 4: Fasten wire and strap metal to wood

25. STEP 5: Screw into place

26. STEP 6: Fasten bell wire at other end of switch block

27. STEP 7: Screw in place

28. Completed Telegraph Switch

29. Attaching alligator clip STEP 1: Insert bell wire into alligator clip

30. STEP 2: Wrap bell wire around screw

31. STEP 3: Tighten screw on alligator clip

32. STEP 4: Add alligator clips to both bell wires

33. Attaching Electro Magnet to Telegraph switch
STEP 1: Fasten magnet wire, bell wire to framework

34. STEP 2: Screw in place

35. STEP 3: Fasten magnet wire, bell wire to framework

36. Completed wiring to telegraph switch

37. Completed Electro magnet wiring

38. Making Sounder Arm
7 ½” x ¾” x 5/8”
Sounder Arm

39. STEP 1: Screw in bolt

40. STEP 2: Insert sounder arm into framework

41. STEP 3: Insert dowel rod into framework

42. Completed telegraph sounder

43. Place top on telegraph sounder

44. Hinge top to telegraph sounder
Hinge 1 ½ x 1 ½”

45. Leave 1/8” gap between electro magnet and bolt

46. Completed Telegraph