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Technology of a Toaster _ history
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Technology of a Toaster _ history

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Transcript

  • 1. Judith Lievens
  • 2. History
  • 3. History
    • Why do people toast bread?
    To preserve it
    To makeitcrunchier
    To makeitsweeter
    To makeit perfect for spreads
  • 4. History
    • Before the toaster bread was toasted over an open firewith the help of a variety of simple tools.
    • 5. 1900s: electricity in all householdstherecame a wave of technologicalinnovationsand a demandforhouseholdappliances, one of themthe toaster
    • 6. First: embeddedheating system
  • History
    • March1905Nichrome (Albert Marsh)
    Surface of toast needs to beheatedabove 154°CNeed of a wirethatreaches high temperatures without beingdamaged of starting a fire.
     Nichrome(alloy of nickel and chromium)
  • 7. History
    • Numerous prototype electric toasters and in1909 : firstelectric toaster (Frank Shailorfor General Electrics)
    This was the firstcommerciallysuccessfulelectric toaster
    Problems:
    When is the toast ready?
    Flippingwithyour handsburns!
  • 8. History
    • 1913 Lloyd and HazelCopeman: ‘‘automatic toaster’’Turning the toast without touchingit
    Five toaster related
    patents ontheirnames
    Manycompaniespaidroyalties to Copemanor
    findotherways to turn
    the toast.
  • 9. History
    Problem: burnt toast
    Byincorporatingsprings and a variable timer: pop-up toaster onMay 29, 1919 by Charles Strite
    PatentedonOctober 18, 1921
    Manufactured and sold to the Childs restaurant chain
    Redesign in 1926: “the Toastmaster” available to the public
  • 10. History
    Major breakthrough in 1928presliced-loaf and sealed-bagprocessby Otto Frederick Rohwedder
    1930sliced Wonder Bread
    1933 more slicedthanunslicedbread
     Strite’spop-up made sensenow and became a standard in American households