US2540873A - Auxiliary voice screen for telephone mouthpieces - Google Patents

Auxiliary voice screen for telephone mouthpieces Download PDF

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Publication number
US2540873A
US2540873A US85017A US8501749A US2540873A US 2540873 A US2540873 A US 2540873A US 85017 A US85017 A US 85017A US 8501749 A US8501749 A US 8501749A US 2540873 A US2540873 A US 2540873A
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shield
mouthpiece
telephone
ring
lower edge
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US85017A
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Florman Irving
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor

Definitions

  • the invention relates to attachments foritelezphone mouthpieces, and .more especially to at- :for this purpose have either been very icompli catedand expensive or have been1subiect to such vibration as todistort the voice of the speaker.
  • the primary 'obiect of the invention is to provideian attachment of this type which overcomes the disadvanta es of the prior arrangements.
  • Still anot er ob'i'ect of the invention' is to provide an attaehment which is arranged toprevent dist rbing vibrations.
  • a further obect of the in ention is to p ov de an "attachment which seats firmly on the o thp eee so that it is not likely to be accidentally dislodged.
  • Sti l a fu ther 'oh ect of the invention i o owide an attachment wh ch can 'be a l ed to a French or crad e t me t le hone itho t nterfering with the proper lay ng of the phone in the cra le whe it is not in use.
  • Fig, 2 is-a-hnttnm plan view
  • the device as shown. includes a circumferenitiallv clo ed shield 2 ha in a'rcirci lar bottom edge 4 adapted to fit over the mouthpiece and having inwardly curved side walls.
  • the sh eld is open at top and bottom.
  • the left hand side wall (Fig. 4) is lower than the right hand wall, and is intended to be applied at the side of the mouthpiece next the handle.
  • Along the inner face of the lower edge of the shield are spaced inwardly shoulders or lugs 5 adapted to engage in a groove 8 in the outside of the mouthpiece.
  • On its outer face the higher wall has a rib Hi, this rib acting to stiffen the shield both to reinforce it and to prevent vibrations which might muflie and confuse the voice of the user.
  • the shield On its interior, and extending downward from its upper edge, the shield has vertical ribs l2, the lower edges of which, as shown in Fig. L engage the upper rim [4 of the mouthpiece. These ribs support a central ring l6, which rests onthe perforated port on [8 of the mouthpiece, preferably just outside the circular group .of perforations normally provided.
  • the whole device is preferably formed of a suitable plastic, such as a phenolformaldehyde resin, which has sufficient resiliency for the shoulders 6 to pass into the groove 8, thus holding the .attachment in position. Also. it is preferably cast in a single, integral piece. When so positioned, the attachment is firmly seated by the engagement of the ribs I2 and ring It with the mouthpiece. This prevents accidental dislodgement and rattling. The ribs impart sufficient rigidity to the shield to damp n its vibrations and thus to prevent muffling of the users voice.
  • a suitable plastic such as a phenolformaldehyde resin
  • a telephone mouthpiece extension comprising a crcumferentially closcd shield open at both ends, said shield having a lower edge shaped to fit resi iently around a telephone mouthpiece, a ring within said shield, said ring be ng of less d ameter t an said shield, and vertical ribs-connecting said ring to the shield and mounting the ring --centrally within the shield adjacent the lower end thereof in a position to engage .the perforated face of the mouthpiece.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shieldhaving a lower edge shapedxto fit resiliently around a telephone mouthpiecega ring within said shield, said ring being of less diameter than. said shield and centrally located therein, and vertical ribs connecting. said :ring and shield terminating adjacent the lower end of the shield and of such length as to engage the upper rim of the mouthpiece when such lower edge fits resiliently therearound.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a o1rcumferential groove in the outside of the mouthpiece, said shield having a lower wall portion and a higher wall portion, and a vertical rib extending outwardly from said higher wall portion to reinforce the same and to lessen vibration thereof.
  • a telephone mouthpiece extension comprising a clrcumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, said shield having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to reinforce the same and to lessen vibration thereof, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs connecting said ring to the shield.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and. vertical ribs connecting said ring to the shield.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, a ring within said shield, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to re'nforce the same and to lessen vibration thereof, a ring within said shield, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
  • a telephone mouthpiece extension comprising a circumfercntially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and Ill) 9.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to reinforce the same and to lessen vibration thereof, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
  • a telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, said shield having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to reinforce r the same and to lessen vibration thereof, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Description

1951 1. FLORMAN 2,540,873
AUXILIARY VOICE SCREEN FOR TELEPHONE MOUTHPIECES Filed April 1, 1949 INVENTOR. Irving Florman Patented Feb. 6, 1951 UNITED STATES PATENT OFFICE AUXILIARY VOICE SCREEN FOR "TELEPHONE MOUTHPIECES Irving Flor-man, New York, ,N. Y.
Application April 1, 1949, Serial No.'85;017
11 Claims.
The invention relates to attachments foritelezphone mouthpieces, and .more especially to at- :for this purpose have either been very icompli catedand expensive or have been1subiect to such vibration as todistort the voice of the speaker.
The primary 'obiect of the invention is to provideian attachment of this type which overcomes the disadvanta es of the prior arrangements.
.Another objectof the invention is to provide "an attachmentwhich is s mple and inex en ive,
"while yet being durable and'eas-y -to attach to" a phone.
Still anot er ob'i'ect of the invention'is to provide an attaehment which is arranged toprevent dist rbing vibrations.
A further obect of the in ention is to p ov de an "attachment which seats firmly on the o thp eee so that it is not likely to be accidentally dislodged.
Sti l a fu ther 'oh ect of the invention i o owide an attachment wh ch can 'be a l ed to a French or crad e t me t le hone itho t nterfering with the proper lay ng of the phone in the cra le whe it is not in use.
Further ohiects and ad anta es o th n ention will appear mo e f ll from thefo lo ing description especial y when taken in noninnetion with the aecompanyingdrawings which 'form a part th reof.
In the drawings:
'1 tea top p an view'of'an'attachmentem- "bodvin r my inv ntion:
Fig, 2 is-a-hnttnm plan view;
F g. 3 is a side elevation: and *Fig. 4 is a cross=section1suhstantiallyxon the line 44 of 1. showing the attachment applied to a mouthpiece.
The device as shown. includes a circumferenitiallv clo ed shield 2 ha in a'rcirci lar bottom edge 4 adapted to fit over the mouthpiece and having inwardly curved side walls. The sh eld is open at top and bottom. The left hand side wall (Fig. 4) is lower than the right hand wall, and is intended to be applied at the side of the mouthpiece next the handle. Along the inner face of the lower edge of the shield are spaced inwardly shoulders or lugs 5 adapted to engage in a groove 8 in the outside of the mouthpiece. On its outer face the higher wall has a rib Hi, this rib acting to stiffen the shield both to reinforce it and to prevent vibrations which might muflie and confuse the voice of the user.
.On its interior, and extending downward from its upper edge, the shield has vertical ribs l2, the lower edges of which, as shown in Fig. L engage the upper rim [4 of the mouthpiece. These ribs support a central ring l6, which rests onthe perforated port on [8 of the mouthpiece, preferably just outside the circular group .of perforations normally provided.
The whole device is preferably formed of a suitable plastic, such as a phenolformaldehyde resin, which has sufficient resiliency for the shoulders 6 to pass into the groove 8, thus holding the .attachment in position. Also. it is preferably cast in a single, integral piece. When so positioned, the attachment is firmly seated by the engagement of the ribs I2 and ring It with the mouthpiece. This prevents accidental dislodgement and rattling. The ribs impart sufficient rigidity to the shield to damp n its vibrations and thus to prevent muffling of the users voice.
While I have described herein one embodiment of myinvention. I wish it to be understood that I do not intend to l mit myself thereby except within'the scope of the claims hereto or hereinafter appended.
I'claim: 1
l. A telephone mouthpiece extension comprising a crcumferentially closcd shield open at both ends, said shield having a lower edge shaped to fit resi iently around a telephone mouthpiece, a ring within said shield, said ring be ng of less d ameter t an said shield, and vertical ribs-connecting said ring to the shield and mounting the ring --centrally within the shield adjacent the lower end thereof in a position to engage .the perforated face of the mouthpiece.
2. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shieldhaving a lower edge shapedxto fit resiliently around a telephone mouthpiecega ring within said shield, said ring being of less diameter than. said shield and centrally located therein, and vertical ribs connecting. said :ring and shield terminating adjacent the lower end of the shield and of such length as to engage the upper rim of the mouthpiece when such lower edge fits resiliently therearound.
3. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a o1rcumferential groove in the outside of the mouthpiece, said shield having a lower wall portion and a higher wall portion, and a vertical rib extending outwardly from said higher wall portion to reinforce the same and to lessen vibration thereof.
4. A telephone mouthpiece extension comprising a clrcumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, said shield having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to reinforce the same and to lessen vibration thereof, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs connecting said ring to the shield.
5. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and. vertical ribs connecting said ring to the shield.
6. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, a ring within said shield, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
7. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to re'nforce the same and to lessen vibration thereof, a ring within said shield, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
8. A telephone mouthpiece extension comprising a circumfercntially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and Ill) 9. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
10. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to reinforce the same and to lessen vibration thereof, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
11. A telephone mouthpiece extension comprising a circumferentially closed shield open at both ends, said shield having a lower edge shaped to fit resiliently around a telephone mouthpiece and having along such lower edge spaced inwardly directed shoulders shaped to engage in a circumferential groove in the outside of the mouthpiece, said shield having a lower wall portion and a higher wall portion, a vertical rib extending outwardly from said higher wall portion to reinforce r the same and to lessen vibration thereof, a ring within said shield shaped and located to engage the perforated face of the mouthpiece, and vertical ribs engageable with the upper rim of the mouthpiece connecting said ring and shield.
IRVING FLORMAN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 887,124 Ralston May'12, 1908 1,227,363 Baird May 2-2, 1917 1,294,197 Thokle Feb. 11, 1919 1,474,100 Aagaard Nov. 13, 1923 1,529,537 Carman 1 Mar. 10, 1925 1,666,220 Schultz Apr. 17, 1928 2,131,820 Scher Oct. 4, 1938 2,245,724 Scher June 17, 1941 2,390,488 Alford Dec. 11, 1945 2,456,346 Veneklasen Dec. 14, 1948 2,478,783 Scher Aug. 9, 1949 FOREIGN PATENTS Number Country v Date 23,601 Great Britain Oct. 18, 1913
US85017A 1949-04-01 1949-04-01 Auxiliary voice screen for telephone mouthpieces Expired - Lifetime US2540873A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012108A (en) * 1959-03-23 1961-12-05 Francine M Bell Telephone accessory
US4396089A (en) * 1980-05-21 1983-08-02 Monya Scully Sound muffling cup
US4905276A (en) * 1988-06-15 1990-02-27 Harry Catey Telephone earpiece extension attachment
US4932495A (en) * 1988-11-25 1990-06-12 Chapman Dewey R Vocal sound muffling device
US5495527A (en) * 1994-06-10 1996-02-27 Ouixote Corporation Telephone privacy device

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US887124A (en) * 1906-09-01 1908-05-12 Robert H Ralston Voice-screen for transmitter-mouthpieces.
GB191323601A (en) * 1913-10-18 1914-10-19 Alexander Marr Improvements in Caps or Mouthpieces for Telephonic Transmitters and other Sound Instruments.
US1227363A (en) * 1916-07-25 1917-05-22 George H Baird Voice-silencer.
US1294197A (en) * 1916-08-16 1919-02-11 Olaus Thokle Telephone-mouthpiece.
US1474100A (en) * 1922-01-19 1923-11-13 Otto W Aagaard Auxiliary mouthpiece for telephones
US1529537A (en) * 1923-04-19 1925-03-10 Albert S Carman Silencer attachment for telephones
US1666220A (en) * 1927-05-24 1928-04-17 George W Schultz Telephone muffler
US2131820A (en) * 1937-02-15 1938-10-04 Louis S Scher Telephone voice silencer
US2245724A (en) * 1940-05-21 1941-06-17 Louis S Scher Voice silencer
US2390488A (en) * 1943-09-28 1945-12-11 Bell Telephone Labor Inc Noise shield for acoustic devices
US2456346A (en) * 1945-01-24 1948-12-14 Paul S Veneklasen Sound shield for telephone transmitters
US2478783A (en) * 1946-06-17 1949-08-09 Louis S Scher Telephone mouthpiece voice silencer with plural silencing chambers

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US887124A (en) * 1906-09-01 1908-05-12 Robert H Ralston Voice-screen for transmitter-mouthpieces.
GB191323601A (en) * 1913-10-18 1914-10-19 Alexander Marr Improvements in Caps or Mouthpieces for Telephonic Transmitters and other Sound Instruments.
US1227363A (en) * 1916-07-25 1917-05-22 George H Baird Voice-silencer.
US1294197A (en) * 1916-08-16 1919-02-11 Olaus Thokle Telephone-mouthpiece.
US1474100A (en) * 1922-01-19 1923-11-13 Otto W Aagaard Auxiliary mouthpiece for telephones
US1529537A (en) * 1923-04-19 1925-03-10 Albert S Carman Silencer attachment for telephones
US1666220A (en) * 1927-05-24 1928-04-17 George W Schultz Telephone muffler
US2131820A (en) * 1937-02-15 1938-10-04 Louis S Scher Telephone voice silencer
US2245724A (en) * 1940-05-21 1941-06-17 Louis S Scher Voice silencer
US2390488A (en) * 1943-09-28 1945-12-11 Bell Telephone Labor Inc Noise shield for acoustic devices
US2456346A (en) * 1945-01-24 1948-12-14 Paul S Veneklasen Sound shield for telephone transmitters
US2478783A (en) * 1946-06-17 1949-08-09 Louis S Scher Telephone mouthpiece voice silencer with plural silencing chambers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012108A (en) * 1959-03-23 1961-12-05 Francine M Bell Telephone accessory
US4396089A (en) * 1980-05-21 1983-08-02 Monya Scully Sound muffling cup
US4905276A (en) * 1988-06-15 1990-02-27 Harry Catey Telephone earpiece extension attachment
US4932495A (en) * 1988-11-25 1990-06-12 Chapman Dewey R Vocal sound muffling device
US5495527A (en) * 1994-06-10 1996-02-27 Ouixote Corporation Telephone privacy device

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