US478692A - Paul il d unger - Google Patents

Paul il d unger Download PDF

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US478692A
US478692A US478692DA US478692A US 478692 A US478692 A US 478692A US 478692D A US478692D A US 478692DA US 478692 A US478692 A US 478692A
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diaphragm
paul
dunger
unger
telephone
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Definitions

  • the object of my invention is to perfect the transmission of articulate speech by telephone.
  • a difiiculty met with in telephony has been the running together of the words sent through the instrument, even when the enunciation of the speaker has been good. This is due to the inertia of the diaphragm and to the fact that a strong voice gives it a adapted to act upon the diaphragm and regulate its vibration.
  • 1 is the rim orframe, in which is mounted the diaphragm 2.
  • 3 are arms secured to the frame 1 by screws 401' otherwise and extending over the diaphragm.
  • 5 are screws tapped through the ends of arms 3, so as to be adjustable therein.
  • (3 are dampers or butters of india-rubber or equivalent material on the ends of screws 5, which may be pressed more or less hard against the diaphragm or may beadjusted toward orfrom it.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Description

(No Model.)
P. H.-DUNGER. TELEPHONE.
' N0. 478,692. Patented July 12, 1892.
UNITED STATES PATENT OFFICE.
PAUL II. DUNGER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE DUNGER LONG DISTANCE TELEPHONE COMPANY, OF SAME PLACE.
TELEPHONE.
SPECIFICATION forming part of Letters Patent No. 478,692, dated July 12, 1892.
Application filed March 29, 1892. Serial No. 426,931. (No model.)
To all whom it, may concern:
Be it known that 1, PAUL H. DUNGER, of Chicago, Illinois, have invented certain new and useful Improvements in Telephones, whereof the following is a specification.
The object of my invention is to perfect the transmission of articulate speech by telephone. A difiiculty met with in telephony has been the running together of the words sent through the instrument, even when the enunciation of the speaker has been good. This is due to the inertia of the diaphragm and to the fact that a strong voice gives it a adapted to act upon the diaphragm and regulate its vibration.
The particular form of the invention which I consider the best is shown in the accompanying drawings, in which Figure l is a central section at right angles to the diaphragm of a transmitting-instrument, and Fig. 2 is aback view of same.
In the figures, 1 is the rim orframe, in which is mounted the diaphragm 2. 3 are arms secured to the frame 1 by screws 401' otherwise and extending over the diaphragm. 5 are screws tapped through the ends of arms 3, so as to be adjustable therein. (3 are dampers or butters of india-rubber or equivalent material on the ends of screws 5, which may be pressed more or less hard against the diaphragm or may beadjusted toward orfrom it.
I claim The combination, substantially as set forth, in a telephone, of the diaphragm, an arm projecting over the diaphragm, a screw in said arm, and a buffer actuated by said screw and adapted to bear against the diaphragm.
PAUL I1. DUNGER.
XVitnesses:
VICTOR S. DUNGER, M. J. CRowE.
US478692D Paul il d unger Expired - Lifetime US478692A (en)

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