Voice Silencer on Telephone Lets You Talk in Secret (Feb, 1941)

Voice Silencer on Telephone Lets You Talk in Secret
Your telephone conversation can be made inaudible to others in the same room if the phone is equipped with a new mouthpiece that prevents sound from escaping. It is easily attached to any hand instrument and fits snugly around the speaker’s lips. There is no distortion of the voice. Part of the midget “telephone booth” telescopes to fit the standard cradle phone.

2 comments
  1. MAKE: Blog says: September 28, 200611:52 am

    Voice Silencer on telephone lets you talk in secret…

    You could probably making a bundle of cash making updated ones for cell phones, hehe – Popular Mechanics 1941 – Link…….

  2. textually.org says: October 1, 20067:02 am

    Voice Silencer on Telephone Lets You Talk in Secret…

    Another isolation from cell phones concept and a blast from the past by Modern Mechanix via we-make-money-not-art..

    Your telephone conversation can be made inaudible to others in the same room if the phone is equipped with a new mouthpiece that pr…

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