GB208912A - Device for the transmission of mechanic and acoustic vibrations - Google Patents

Device for the transmission of mechanic and acoustic vibrations

Info

Publication number
GB208912A
GB208912A GB3521122A GB3521122A GB208912A GB 208912 A GB208912 A GB 208912A GB 3521122 A GB3521122 A GB 3521122A GB 3521122 A GB3521122 A GB 3521122A GB 208912 A GB208912 A GB 208912A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
disc
vibrations
diaphragms
beats
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
Application number
GB3521122A
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.)
Individual
Original Assignee
Individual
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 CH105823D priority Critical patent/CH105823A/en
Application filed by Individual filed Critical Individual
Priority to GB3521122A priority patent/GB208912A/en
Publication of GB208912A publication Critical patent/GB208912A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/14—Throat mountings for microphones

Abstract

208,912. Darimont, L. Dec. 27, 1922. Vibrations, indicating, recording, and registering.-Relates to devices for the transformation of mechanical vibrations, such as those of the vocal chords or the beats of the heart, into acoustic vibrations, of the kind employing two diaphragms 2, 6 with liquid 11 between. A disc 3 of ebony or other suitable material is attached to one diaphragm and, in the case in which the instrument is held against the throat, Fig. 1, the other diaphragm 6 is provided with a disc 12 of retort coal co-operating with a shallow dish formed of, and containing balls 14 of, the same material. The dish is formed in two parts 13, 16 separated by insulating material 15. The diaphragm 6 and disc 12 may be replaced by a plate of liquid-proofed retort coal. The microphone device is connected to a telephone receiver 20. The chamber between the diaphragms is provided with a pipe 9. In apparatus for listening to the beats of the heart, Fig. 2, an element 5 is mounted on the diaphragm 6 and operates contact points on spring blades 9<a>, 10<a> connected in a telephone circuit. The diaphragm 2 is mounted in a threaded ring 8 for adjustment purposes.
GB3521122A 1922-12-27 1922-12-27 Device for the transmission of mechanic and acoustic vibrations Expired GB208912A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH105823D CH105823A (en) 1922-12-27 1922-12-26 Microphone device for the transmission of vibrations from a solid body.
GB3521122A GB208912A (en) 1922-12-27 1922-12-27 Device for the transmission of mechanic and acoustic vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3521122A GB208912A (en) 1922-12-27 1922-12-27 Device for the transmission of mechanic and acoustic vibrations

Publications (1)

Publication Number Publication Date
GB208912A true GB208912A (en) 1924-01-03

Family

ID=10375136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3521122A Expired GB208912A (en) 1922-12-27 1922-12-27 Device for the transmission of mechanic and acoustic vibrations

Country Status (2)

Country Link
CH (1) CH105823A (en)
GB (1) GB208912A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107505229A (en) * 2017-10-20 2017-12-22 德清四海化工有限公司 A kind of performance testing device of catalyst

Also Published As

Publication number Publication date
CH105823A (en) 1924-07-16

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