US1328620A - Sounding-chamber for thermic telephones and other apparatus - Google Patents

Sounding-chamber for thermic telephones and other apparatus Download PDF

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Publication number
US1328620A
US1328620A US59618A US5961815A US1328620A US 1328620 A US1328620 A US 1328620A US 59618 A US59618 A US 59618A US 5961815 A US5961815 A US 5961815A US 1328620 A US1328620 A US 1328620A
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US
United States
Prior art keywords
chamber
sounding
sounding chamber
base
cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US59618A
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English (en)
Inventor
Lange Pieter De
Robert Aernout Baron Va Lynden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AMERICAN THERMOPHONE Co
Original Assignee
AMERICAN THERMOPHONE Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DENDAT298187D priority Critical patent/DE298187C/de
Application filed by AMERICAN THERMOPHONE Co filed Critical AMERICAN THERMOPHONE Co
Priority to US59618A priority patent/US1328620A/en
Application granted granted Critical
Publication of US1328620A publication Critical patent/US1328620A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/002—Transducers other than those covered by groups H04R9/00 - H04R21/00 using electrothermic-effect transducer

Definitions

  • Patented J an 20, 1920.
  • Our invention relates to a sounding chamher for sound producers or receivers of any kind which are intended to be introduced into the auditory passage of the human ear. It relates more particularly to thermic telephones in which the sound receiver, owing to its small dimensions, can be brought into direct connection with the ear.
  • the object of the invention is to close the outside of the auditory passage in the most perfect manner possible by the sounding chamber introduced into said passage, in order to obtain a reproduction of sound weakened as little as possible, and to insure clear hearing even when the transmission of sound takes place accompanied by strong outside noises.
  • This object is attained according to this invention by the sounding chamber being made of a round body forming its main base, and'of an auxiliary body supplementing the said base, which as regards its shape fits as accurately as possible the outer auditory passage widening outward and having different shape in different persons.
  • the manufacture on a large scale of'sound producers provided with the sounding chamber is greatly facilitated, and at the same time the shape of the sounding chamber can be fitted to the shape of the auditory passage of the user of the telephone by suitably shaping the auxiliary body supplementing the main base.
  • Figure 1 shows a thermic telephone provided with the improved sounding chamber, in elevation, partly in section.
  • Fig. 2 is a vertical section of a thermic telephone connected to a sounding chamber of a modified construction.
  • Iiig. 3 is a section on line AB of Fig. 2, anc
  • Fig. 4c shows a plan of Fig. 2.
  • the sounding chamber of the thermic telephone shown by way of example in Fig. 1, consists of a round body 9. provided with a soundopening 1, and of an auxiliary body 3 connected to the said body and located at one side thereof, the shape of which fits as accurately as possible the shape of the auditory passage.
  • the auxiliary body 3 is preferably made from a mold of the auditory passage of the user of the sounding chamber.
  • the auxiliary body 3 may be connected to the body 2 for instance by spring pins 4 on the one part engaging into correspondingly arranged holes in the other part.
  • the sounding chamber of the thermic telephone represented as a receiver is constituted by a round cap 5 connected to the telephone, provided with a sound opening 6.
  • This cap is fixed on a casing 17 the top of which is formed by a perforated plate 13.
  • the lower portion of the casing is threaded, and screwed into it is a plug 18 which receives the two conductors 19 of a double formed to fit exactly the portion of the auditory passage corresponding to its position in the latter.
  • the auxiliary cap 7 On its lower face, the auxiliary cap 7 is provided with a hook-like member 8 which passes through a slot 9 of the cap 5, adjoining the opening 6.
  • auxiliary cap 7 is normally held by the spring 12 in the position shown in full lines in Fig. 2.
  • the auxiliary cap 7 is pressed back against the action of the spring 12, so that it is brought into the position shown in dotted lines, in which, together with the cap 5, it closes the auditory passage outward in a perfectly tight manner.
  • the auxiliary cap 7 again returns to its original position, the intermediate member 8 being guided, on the one hand, by the slot 9, and on the other hand, by means of its cam face le by the side of the opening 6.
  • the cap or auxiliary body 7 is thus connected with the base or main body 5 movably and yieldingly, and will adjust itself automatically to such a position relatively to said base as will conform most closely tothe users ear.
  • the curvature of the base is preferably spherical, thus enabling the auxiliary body or cap to remain in proper engagement with the base when moving on said base between the two limit positions indicated in Fig. 2, such movement being transverse to the longitudinal axis indicated by the section line AB.
  • the sound ng chamber described may be used not only in connection With telephones of any k nd. but also for other sound-transmitting instruments.
  • a base having a ball-shaped end, and an auxiliary body attached to said base and having a concave surface engaging the convex surface of the base, and a convex free surface, and forming a one-sided bulge on said base.
  • a spherically-rounded body forming the base of said sounding chamber, and a separate auxiliary body engaging the convex surface of said rounded base and projecting therefrom asymmetrically to form a one-sided bulge which enables the sounding chamber to be fitted more accurately to such passage.
  • a base having a curved end
  • auxiliary body forming a one-sided v bulge movable transversely along said curved end of the base.
  • a round body forming the base of said sounding chamber, and a resiliently secured auxiliary body engaging said round body and projecting therefrom asymmetrically to form a one-sided bulge which enables the sounding chamber to be fitted more accurately to such passage.
  • a round body forming the base of said sounding chamber, and a detachable cap secured to said base and engaging it at one side only, to form an asymmetrical bulge on the side of said base, to conform more closely to the shape of such auditory passage.
  • a round body forming the base of said sounding chamber, and a cletachable cap mounted on said body at one side thereof, to enable the sounding chamber to be fitted accurately to the auditory passage of the individual user.
  • a round body forming the base of said sounding chamber and a detachable cap mounted on said body at one side, said cap and body fittingsaid auditory pa ssage, and resilient-means connectmg said cap with said body.
  • a round body forming the base of said sounding chamber and a detachable cap mounted on said body at one side, said cap and body fitting said auditory passage, and means for guiding said cap on said body.
  • a round body forming the base of said sounding chamber, and a detachable cap mounted on said body, said cap and body being adapted to fit said auditory passage, resilient means connecting said cap with said body, a sound opening in said body, a slot connected with said opening, and means for guiding said cap in said slot.
  • a sounding chamber for sound producers or receivers of any kind intended to be introduced into the auditory passage of the human ear, a.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Toys (AREA)
  • Telephone Set Structure (AREA)
US59618A 1915-11-04 1915-11-04 Sounding-chamber for thermic telephones and other apparatus Expired - Lifetime US1328620A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DENDAT298187D DE298187C (enrdf_load_stackoverflow) 1915-11-04
US59618A US1328620A (en) 1915-11-04 1915-11-04 Sounding-chamber for thermic telephones and other apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59618A US1328620A (en) 1915-11-04 1915-11-04 Sounding-chamber for thermic telephones and other apparatus

Publications (1)

Publication Number Publication Date
US1328620A true US1328620A (en) 1920-01-20

Family

ID=22024124

Family Applications (1)

Application Number Title Priority Date Filing Date
US59618A Expired - Lifetime US1328620A (en) 1915-11-04 1915-11-04 Sounding-chamber for thermic telephones and other apparatus

Country Status (2)

Country Link
US (1) US1328620A (enrdf_load_stackoverflow)
DE (1) DE298187C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528811A (en) * 1944-04-01 1950-11-07 Charles M R Balbi Earphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528811A (en) * 1944-04-01 1950-11-07 Charles M R Balbi Earphone

Also Published As

Publication number Publication date
DE298187C (enrdf_load_stackoverflow)

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