US1329029A - Telephone apparatus - Google Patents

Telephone apparatus Download PDF

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Publication number
US1329029A
US1329029A US228311A US22831118A US1329029A US 1329029 A US1329029 A US 1329029A US 228311 A US228311 A US 228311A US 22831118 A US22831118 A US 22831118A US 1329029 A US1329029 A US 1329029A
Authority
US
United States
Prior art keywords
transmitter
case
diaphragm
operator
microphone
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
US228311A
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English (en)
Inventor
John S Timmons
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
Application filed by Individual filed Critical Individual
Priority to US228311A priority Critical patent/US1329029A/en
Priority to GB1803419A priority patent/GB152761A/en
Priority to FR502421A priority patent/FR502421A/fr
Application granted granted Critical
Publication of US1329029A publication Critical patent/US1329029A/en
Priority to DE1920348389D priority patent/DE348389C/de
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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/14—Throat mountings for microphones
    • 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
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast
    • 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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Definitions

  • My invention has for its object, the provision in a telephonic system of communication between the operators and attendants, of certain features of construction in the head sets comprising the transmitters and receivers, which will enable the said op erators and attendantsto freely inter-communicate by conversation, notwithstanding the objectionable noises aforesaid; and my invention, furthermore, particularly 'embodies special features of construction in respect to the transmitter, whereby the same may be operated directly by muscular action of the operator and without being affected directly by air vibrations adjacent to the said operator or produced by articulate speech.
  • the operator may talk in an ordinary tone, or even under conditions in which he cannot hear his own voice, and yet the transmission by use of my improved transmitter will be distinctly and clearly heard by the person to whom the receivers are attached.
  • my improved transmitter I provide an air tight case having means for adapting it to rest snugly against the throat or other part of the head or body of the operator, andcombine with the said-case,- a microphone device arranged,
  • -electrodes of the microphone may be put into vibration by a. bodily vibration of the inclosing case, and the last mentioned electrode being provided with sufficient weight, will through the action of inertia, tend to resist vibration and consequently enable a relative vibration between the two electrodes to take place, affecting the resistance of the microphone and in that manner controlling the undulatory current required for articulate speech.
  • the above stated actions are the result of the bodily vibration of the solid outer casing by muscular action of the operator and without having its contained diaphragm affected bythe surrounding air vibrations.
  • My invention also consists of improvements hereinafter described whereby the above objects and results are attained, said improvements comprising certain organization and combination of parts which are fully described hereinafter and more particularly defined in the claims.
  • Figure 1 is a perspective view illustrating a head set used by .an operator and having my improved transmitter applied thereto;
  • Fig. 2 is a perspective view illustrating the adaptation of the head set to a helmet;
  • Fig. 4 is a rear View of my improved transmitter, with the rear cover plate removed to show the interior construction.
  • the transmitter shown in Figs. 3 and 4 is constructed as follows: 2 is a case which may be made of aluminumor other suitable material and is of a rigid construction.
  • This case is provided with ahollow chamber 6, has its front portion 3 arranged on an f incline to the axial length of the case, and
  • the front portion of the case 2 is provided at top. and bottom respectively with strap or web loops 4 and 5-, through which the strap or web 27 of the head harness extends for holding the transmitter tightly against the throat of the operator.
  • these strap or web loops 4 and 5 are arranged slightly back of the front face 3 of the casing 2, so that they will not interfere with the positive contact of said face with the throat or vibrating portion of the body of the operator.
  • the microphone which in some respects may embody features of common construction, but the arrangement of the microphone itself and the manner of insuring vibration of the diaphragm is materially. different from transmitters heretofore in use, andl will now describe-the details of my improved construction.
  • the carbon disk 19 (it being substantially parallel to carbon disk 11) and constitutes, with the disk 15, the other or movable electrode of the microphone. Between the carbon electrodes are placed the granular carbon particles, such as generally used in microphones.
  • the diaphragm is preferably of mica and hence is nonconducting to the current; and to prevent short circuiting, the inner surface of the bushing or ring 10 is lined with paper 12 to keep the carbon granules out of contact with the said metal bushing 10.
  • the casing 2 is provided with a hub 22 having an aperture through it opening into the chamber 6; and the hub is further screw threaded'and fitted with a tubular clamping screw-bushing 23 whose threaded shank is tapered.
  • Extending through the clamping bushing 23 and into the chamber 6 is a two wire cable 21,the wires at the inner end being separated as at 24 and 25, the former clamped under the nut 17 and hence connecting electrically with one electrode, and the latter soldered to the casing 2 and hence connecting electrically with the other electrode.
  • a very important feature in the construc tionof my transmitter resides in the presence of the weight 18 upon the disphragm a 13, because this weight provides a mass in association with the diaphragm and movable electrode which, by its inertia, ofl'ers resistance against movement and consequently, when the casing 2 is bodily vibrated by the muscular effort of the operator in talking,
  • the movement of the electrode 19 of the diahragm is caused to lag in overcoming the inertia of the weight 18 and its connected parts. and in this manner vibrate in an effort to follow the vibrations of the case, the lag or phase difference causing the microphone to. become responsive.
  • the weight shall be proportioned properly, because if it were too heavy it would make the instrument less responsive locate a part of the weight upon each side of the diaphragm, as shown.
  • the diaphragm 13 may be of any suitable material other than mica and hence I do not restrict myself in this respect.
  • This transmitter is quite small as compared with ordinary instruments, the actual size in practice being'only about one-third the size shown in the drawing,- the scale of the drawing being large for purposes of better illustration.
  • the device is so small that it may be held under the chin without the least inconvenicnce..
  • the obliquity of the contact surface 3 to the parallel planes of the electrodes and diaphragm enables the transmitter to be held to the side of the throat as shown in Fig. 1, and at the same time cause the planes of the electrodes 11 and 19 and diaphragm 13 to be substantially vertical or upright to insure the granular carbon 20 of the microphone being maintained in electrical contact with both eelct'rodes.
  • the receivers R are provided with rubber covers or caps 7* which fit snugly about the ears of the operators either directly, as with the harness of Fig. 1, or indirectly, as when arranged in the hood or helmet as in Fig. 2.
  • the two receivers R, R are held in position to the ears by a strap or band 26 extending over the head, achin strap or web 27 extending under the chin and a back web or strap- 22 extending about the back of the head.
  • These straps, webs or bands may be adjustable as x by suitable buckle devices S and if desired,
  • the transmitter T is held,
  • the transmitter case 2 In securing the transmitter to the chin strap or web 27, the latter is threaded through the strap loop 4 and 5 and over the face 3 of the case 2, as shown in Fig. 3.
  • the body is preferably of metal and quite small and vas the diaphragm operating portion, is intended to lie close upon the throat of the pilot and away from the region of his mouth, and so formed that no atmospheric sound waves are permitted to have access to the diaphragm.
  • the transmitter is operated by the vibrations of the outer surface of the throat against which the transmitter rests; and in practice it has been demonstrated that in this manner,.speech in a low tone of voice may be transmitted with perfect clearness to the person usingthe receivers at the other station and be clearly understood, no matter how great the noise from the machinery and rushing of the air.
  • Therecei'vers and transmitter are coupled with the outside circuits by a coupling plug switch 30 attached by cable 29 to the harness straps or' webs 27 and 22?, so that the operatormay readily connect his instruments with the outside circuits which may be attached to the aeroplane itself or which may lead to any distance if the apparatus .is used in connection with ordnance or other purposes on the ground.
  • This coupling switch may be of any suitable construction and I do not limit myself in this respect.
  • the receivers R, R, and transmitter T are inclosed in or associated with the hood or helmet 26 viding such contact, whether with the metal next to the skin or covered with a cloth for comfort, as will insure the mechanical vibrations of the skin surface acting as amotive force to vibrate the diaphragm as distinguished from operating it by vibrations propagated through the air.
  • a closed case sufliciently rigid not to be affected by air vibrations combined with a microphone entirely inclosed within the case and having one electrode directly connected to the case, a diaphragm secured to the case and provided with the other electrode, said diaphragm free to vibrate independently of neaaoae the case and having secured to it a part formed of suificient weight to provide an effective inertia to produce a difierence in phase vibrations of the two electrodes, and
  • A. telephone transmitter having a microphone entirely shielded against air vibrations by an outer case, one electrode of the microphone rigidly secured to the case and bodily movable with it, and the other electrode of the microphone weighted and secured to the case through a flexible diaphragm, the'weighted electrode having part of its weight upon opposite sides of the diaphragm.
  • a telephone transmitter having a hollow case substantially non-sensitive to sound vibrations of the air, combined with a microphone within and shielded by said case, one of the electrodes of the microphone wholly movable with the case and the other electrode of the microphone 'movably suspended within the case, and a flexible diaphragm having its perimeter secured to the case and its center secured to the movable electrode,
  • said movable electrode sufficiently weighted to cause the electrodes to vibrate out ofphase when the case is vibrated.
  • a telephone headset for aeroplane pilots, etc. means arranged for fitting over the'hcad and having a strap under the chin, receivers positioned on said means adapted to extend over the ears, and a transmitter secured to the chin strap and arranged to be held tightly against the throat portion of the head, said telephone transmitter having a 'hollow case substantially non-sensitive to sound vibrations of the'air, combined with a microphone within and shielded by said case, one of the electrodes of the microphone wholly movable with the case and the other electrode of the microphone movably suspended within the case, and a flexible diaphragm having its perimeter secured to the case-and its center secured to the movable electrode, said movable electrode sutficiently Weighted to cause the electrodes to vibrate out of phase when the case is vibrated.
  • a harness formed of webs arranged for fitting over the head and under the chin, receivers for the webs positioned mitter' arranged nearer one receiver than the other so as to: come over the throat of the operator to one side of the larynx.
  • a telephone transmitter comprising the following parts in combination, a case having a hollow chamber, an electrode fitted tightly in the inner end of the chamber, a diaphragm clamped to the case and fitting across the chamber parallel to the electrode, a clamping ring secured to the case for clamping the perimeter of the diaphragm in place, an electrode secured to the side of the diaphragm next to the first mentioned electrode, a weight secured to. the opposite side of the diaphragm and arranged to vibrate independently of the case,"
  • a telephone transmitter having an outer case formed with a rigid'surface for contact with the skin of the operator, said case having web loops at sides diametrically opposite and each arranged slightly to one side of the rigid contact surface soace to be unobstructed,
  • a telephone transmitter having an outer case formed with a rigid surface for contact with the skin of the operator, said case having Web loops at its sides diametrically opposite and'arranged slightly to the rear of the rigid contact surface, combined with a chin strap extending over the rigid contact surface and backward about the loops for holding the transmitter contact surface tightly to the skin of the operator.
  • a telephone transmitter comprising an inclosing case having an inner chamber and an outer oblique non-vibratable contact surface adapted to be pressed against the 'neck of the operator,a microphone arranged planes of the electrodes and diaphragm in a substantiall vertical direction.
  • a telep one transmitter comprising a rigid case having an oblique contact surface and chamber open at the back, a microphone within the chamber and having its diaphragm and movable electrode near the 0 en end of the chamber, a cable extendin'g t rough the case to the outer side of the diaphragm and having a terminal connected with the diaphragm and its electrode, a removable cover cap detachably secured to the case'to tightly close the open end of the chamber, and means for holding the case ti htly to the head of the operator.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
US228311A 1918-04-13 1918-04-13 Telephone apparatus Expired - Lifetime US1329029A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US228311A US1329029A (en) 1918-04-13 1918-04-13 Telephone apparatus
GB1803419A GB152761A (en) 1918-04-13 1919-07-18 Telephone transmitter
FR502421A FR502421A (fr) 1918-04-13 1919-08-08 Transmetteur téléphonique
DE1920348389D DE348389C (de) 1918-04-13 1920-02-04 Telephonsender mit einem ein Mikrophon vollstaendig umschliessenden Gehaeuse, dessen Waende allseitig so stark sind, dass sie durch Luftschwingungen nicht beeinflusst weren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US228311A US1329029A (en) 1918-04-13 1918-04-13 Telephone apparatus

Publications (1)

Publication Number Publication Date
US1329029A true US1329029A (en) 1920-01-27

Family

ID=22856647

Family Applications (1)

Application Number Title Priority Date Filing Date
US228311A Expired - Lifetime US1329029A (en) 1918-04-13 1918-04-13 Telephone apparatus

Country Status (3)

Country Link
US (1) US1329029A (de)
DE (1) DE348389C (de)
FR (1) FR502421A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1253763B (de) * 1962-12-10 1967-11-09 Bendix Corp Unterwasser-Telefon
US4349081A (en) * 1980-12-08 1982-09-14 Audrey Pepple Method for retaining a hearing aid in place and hearing aid harness
USD410921S (en) * 1998-06-11 1999-06-15 Labtec, Inc. Headset microphone
US6179666B1 (en) * 1999-02-05 2001-01-30 Michael L. Osborn Two-way radio accessory quick connect and extension cord
US20080107289A1 (en) * 2002-08-01 2008-05-08 Retchin Sheldon M Recreational bone conduction audio device, system
US20100329499A1 (en) * 2009-06-25 2010-12-30 James Wolfe Garment With Built-In Audio Source Wiring
US20110019861A1 (en) * 2009-06-25 2011-01-27 James Wolfe Garment With Built-In Audio Source Wiring
US20110129110A1 (en) * 2009-06-25 2011-06-02 James Wolfe Garment With Built-In Audio Source Wiring
US20110235819A1 (en) * 2008-11-25 2011-09-29 Skullcandy, Inc. Interchangeable Headphone Audio System
US20130185905A1 (en) * 2012-01-24 2013-07-25 Skullcandy, Inc. Accessory structures for connection between straps and related methods
US9237395B2 (en) 2009-11-25 2016-01-12 Skullcandy, Inc. Modular audio systems and related assemblies and methods

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2062372A (en) * 1933-08-11 1936-12-01 Sonotone Corp Bone conduction hearing aid
DE750602C (de) * 1934-08-05 1945-01-20 Hans Von Baussen Elektrisches Stethoskop

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1253763B (de) * 1962-12-10 1967-11-09 Bendix Corp Unterwasser-Telefon
US4349081A (en) * 1980-12-08 1982-09-14 Audrey Pepple Method for retaining a hearing aid in place and hearing aid harness
USD410921S (en) * 1998-06-11 1999-06-15 Labtec, Inc. Headset microphone
US6179666B1 (en) * 1999-02-05 2001-01-30 Michael L. Osborn Two-way radio accessory quick connect and extension cord
US20080107289A1 (en) * 2002-08-01 2008-05-08 Retchin Sheldon M Recreational bone conduction audio device, system
US8111860B2 (en) * 2002-08-01 2012-02-07 Virginia Commonwealth University Recreational bone conduction audio device, system
US20110235819A1 (en) * 2008-11-25 2011-09-29 Skullcandy, Inc. Interchangeable Headphone Audio System
US8542859B2 (en) * 2008-11-25 2013-09-24 Skullcandy, Inc. Interchangeable headphone audio system
US20110129110A1 (en) * 2009-06-25 2011-06-02 James Wolfe Garment With Built-In Audio Source Wiring
US20110019861A1 (en) * 2009-06-25 2011-01-27 James Wolfe Garment With Built-In Audio Source Wiring
US8107653B2 (en) 2009-06-25 2012-01-31 Jerry Leigh Of California, Inc. Garment with built-in audio source wiring
US20100329499A1 (en) * 2009-06-25 2010-12-30 James Wolfe Garment With Built-In Audio Source Wiring
US8553919B2 (en) 2009-06-25 2013-10-08 Jerry Leigh Of California, Inc. Garment with built-in audio source wiring
US8687834B2 (en) 2009-06-25 2014-04-01 Jerry Leigh Of California, Inc. Garment with built-in audio source wiring
US8965032B2 (en) 2009-06-25 2015-02-24 Jerry Leigh Of California, Inc. Garment with built-in audio source wiring
US9237395B2 (en) 2009-11-25 2016-01-12 Skullcandy, Inc. Modular audio systems and related assemblies and methods
US20130185905A1 (en) * 2012-01-24 2013-07-25 Skullcandy, Inc. Accessory structures for connection between straps and related methods
US9439467B2 (en) * 2012-01-24 2016-09-13 Skullcandy, Inc. Accessory structures for connection between straps and related methods

Also Published As

Publication number Publication date
DE348389C (de) 1922-02-07
FR502421A (fr) 1920-05-14

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