The phonograph and gramophone are now so well known as not to call for any detailed description of their appearance. But as many are not so conversant with the moe in which they act, either with regard to their power of recording or that of afterwards reproducing sound, we give in the following pages sufficient information to enable anyone to form an intelligent conception of the acoustic principles which govern the phenomena, and which enable the taling machine to make a memorandum or “record” of any sound, be it noise or music, speech or howl, emitted within its range and then from this record to reproduce, at the will of the operator, the sounds thereon originally impressed. We follow this up by a brief historical outline of the work of different experimenters, which has culminated in the Phonograph as we now know it, with its perfected mechanical devices. We also give direactions for making a simple but efficient form, giving due prominence to the different types of recorders, records, and reproducers, as well as to the more delicate and noiseless forms of mechanism adapted to imparting the necessary motion to the records.

:: Illustration List:

:: 1. Rendering sound vibrations visible

:: 2. Leon Scott’s Phonautograph

:: 3. Tracings produced by sound

:: 4. Kratzenstein’s Reeds

:: 5. Kempelen’s talking machine

:: 6. Kempelen’s improved machine

:: 7. Edison’s first phonograph

:: 8. Edison’s bidwell’s modification

:: 9. Bidwell’s sectional view

:: 10. Bidwell’s speaking point

:: 11. Electro-motor for phonographs

:: 12. Barrel spring motor

:: 13. Open spring motor

:: 14. Gearing of motor

:: 15. Three-ball governor

:: 16. Guide-bar arrangement

:: 17. Recorder, section and elevation

:: 18. Recorder in perspective

:: 19. Box of reproducer

:: 20. Tube of reproducer

:: 21. Section of reproducer

:: 22. Drawing glass threads

:: 23. Making glass bead

:: 24. Magnified glass bead

:: 25. Star support for bead

:: 26. a and b, Bettini Reproducer, c, d, and e, various reproducers

:: 27. Horn, suspended

:: 28. Balanced reproducer

:: 29. Pattern for horn

:: 30. Coning horn

:: 31. Making records

:: 32. Blanks

:: 33. Gold coating

:: 34. Record cast

:: 35. Moulding in wax

:: 36. Pantographic duplicator

:: 37. attachment of balanced reproducer

:: 38. Phonograph and gramophone tracks

:: 39. Gramophone sound-box

:: 40. Gramophone complete

This Collection Includes {2} two bonus books:

:: Phonograph Know How {1900}

:: A New Apparatus for the Enlargement of Phonograph Records {1915}