ArticleslgStudy

science

Hush-A-Phone

Hush-A-Phone is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hush-A-Phone rather than just read about it. In short: The Hush-A-Phone was a device designed to attach to the transmitter of a telephone to reduce noise pollution and increase privacy. Sold by the Hush-A-Phone company, the device was frequently described in its commercial advertisements as "a voice silencer designed for confidential conversation, clear transmission and office quiet.

Hush-A-Phone — main illustration
Hush-A-Phone — illustration

Key takeaways

  • Hush-A-Phone belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Hush-A-Phone to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hush-A-Phone from memory before moving on to harder problems.

Reference excerpt

The Hush-A-Phone was a device designed to attach to the transmitter of a telephone to reduce noise pollution and increase privacy. Sold by the Hush-A-Phone company, the device was frequently described in its commercial advertisements as "a voice silencer designed for confidential conversation, clear transmission and office quiet. Not a permanent attachment. Slips right on and off the mouthpiece of any phone". Hush-A-Phone Corp. (originally Hush-A-Phone Sales Corp.) was a company founded in New York in 1921 or 1922 to market the Hush-a-Phone. The device was the topic of a landmark court case, Hush-A-Phone v. United States. The Hush-A-Phone was regularly referred to in telecommunications policy analysis in the 1980s, attracting renewed interest in the 2000s as a symbol of a small company fighting against a monopoly, especially in the context of net neutrality. Indeed, because Hush-A-Phone eventually won its case against the phone company, the final legal proceedings involving the Hush-A-Phone turned out to be relevant to the eventual breakup of the Bell system. Advertisements for the Hush-A-Phone not only argued for its importance as an aid to privacy, but also noted the device improved clarity of sound, which AT&T would directly argue against.

History

1920–1948: early years The manufacture of Hush-A-Phones began in 1921, and the Hush-A-Phone company was first mentioned in The New York Times in a 1922 classified advertisement for a "typist-dictaphone operator". At this time, Hush-A-Phone was located in New York's Flatiron District, at 41 Union Square. Only a month later, the company advertised for a salesman, noting that 500 Hush-A-Phones were sold in one week at a business show. The company was still seeking a salesman in April 1922, but stopped posting dedicated sales openings until January 1923, this time noting several thousand Hush-A-Phones had already sold in New York. The company's first classified advertisement for the product appeared June 7, 1922, pricing the product at $10 and offering a free 5-day trial offer. A capital increase to the "Hush-A-Phone Sales Corp." company was announced on December 22, 1922, from $250,000 to $500,000, and in March 1923, the company's name changed from Hush-A-Phone Sales Corp., Manhattan, to Hush-A-Phone Corp. Some time between May 30, 1923, and October 18, 1923, Hush-A-Phone moved to 10 Madison Avenue, and by May 1924, the company had started suggesting that potential customers outside of New York wanting a demonstration would instead be sent a booklet.

The Wall Street Crash of 1929 brought trouble to many companies. On October 20, 1929, Hush-A-Phone was advertised along with several other companies on the first page of The New York Times as part of the "National Business Show" being held in Grand Central Palace from October 21 to 24. The company was showing its handset model for the first time. The ad noted that Mr. H. C. Tuttle, President of the Hush-A-Phone Corporation, had just returned from a European tour of ten countries where the product would be distributed. The product was described as being "beautiful", made of bakelite, and "embellished with a work of art in bas-relief. It appears as a handsome desk clock, nine inches high, concealing its function as a Hush-A-Phone". Some time between October 1927 and December 1929, Hush-A-Phone moved from its Madison Avenue location to about seven blocks southwest to 43 W. 16th Street. Although one more advertisement appeared in 1929 (December 8, just in time for the holidays), Hush-A-Phone was absent from the Times until July 1934, when a four-line, text-only advertisement appeared. Advertisements in 1936 noted a new model "for French phone" was out, and in October 1937 the Hush-A-Phone company was exhibiting again, this time showing a 200-foot elastic telephone wire at the National Business Show. However, the four-line classified advertisements continued to be the company's public appearances after the show, appearing between ads for cigars and baldness cures, until 1942, when their product appeared in photographs in a few ads run by houseware store Lewis & Conger. In 1944 the company noted "Models for E-1 and F-1 Handset Phone; Pedestal Phone; Switchboard and Dictating Machines". In 1945, Hush-A-Phone ads began appearing in The Washington Post, and Hush-A-Phone consulted with acoustics expert Leo Beranek at MIT, who began work to design an improved silencer. Beranek would later bring in J. C. R. Licklider to help demonstrate the Hush-A-Phone retained clarity of sound. 125,796 Hush-A-Phone sets were sold between 1922 and 1949.

… excerpt ends here. Continue reading the full article.

Illustrations

Hush-A-Phone: Hush-A-Phone attached to a candlestick telephone on display at Connections Museum Seattle
Hush-A-Phone attached to a candlestick telephone on display at Connections Museum Seattle
Hush-A-Phone: Alan Gordon-Finlay trialling the Hush-a-phone at the League of Nations, circa 1927 – ILO Historical Archives
Alan Gordon-Finlay trialling the Hush-a-phone at the League of Nations, circa 1927 – ILO Historical Archives

Worked examples

Example 1 — a first encounter with Hush-A-Phone

Start with the simplest possible case. Write down what Hush-A-Phone claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hush-A-Phone before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hush-A-Phone ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hush-A-Phone

In research
Hush-A-Phone appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Hush-A-Phone in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Hush-A-Phone is common in secondary-school and first-year university syllabi. It links to neighbouring topics American inventions, Office equipment, Telecommunications equipment, so understanding it makes those chapters shorter.
In everyday life
Look for Hush-A-Phone outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Hush-A-Phone” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Hush-A-Phone in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hush-A-Phone means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hush-A-Phone out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hush-A-Phone in simple terms?

The Hush-A-Phone was a device designed to attach to the transmitter of a telephone to reduce noise pollution and increase privacy. Sold by the Hush-A-Phone company, the device was frequently described in its commercial advertisements as "a voice silencer designed for confidential conversation, clea…

Why does Hush-A-Phone matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hush-A-Phone?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hush-A-Phone.

Tags

  • American inventions
  • Office equipment
  • Telecommunications equipment
  • Telephony

Keep exploring