US1754044A - Sound-producing device - Google Patents

Sound-producing device Download PDF

Info

Publication number
US1754044A
US1754044A US269519A US26951928A US1754044A US 1754044 A US1754044 A US 1754044A US 269519 A US269519 A US 269519A US 26951928 A US26951928 A US 26951928A US 1754044 A US1754044 A US 1754044A
Authority
US
United States
Prior art keywords
cone
sound
rings
attached
apex
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
US269519A
Inventor
William B Potter
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.)
General Electric Co
Original Assignee
General Electric 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
Application filed by General Electric Co filed Critical General Electric Co
Priority to US269519A priority Critical patent/US1754044A/en
Priority to BE359759A priority patent/BE359759R/en
Priority to FR36830D priority patent/FR36830E/en
Priority to GB11367/29A priority patent/GB309555A/en
Priority to DEA57461D priority patent/DE601827C/en
Priority to FR37341D priority patent/FR37341E/en
Priority to FR38139D priority patent/FR38139E/en
Application granted granted Critical
Publication of US1754044A publication Critical patent/US1754044A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/06—Filling-up mechanically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Definitions

  • the weight of the paper utilized for this purpose should be as light as possible consistent with the power of the driving means, but many of the paper diaphragms heretofore provided are not stiif enough to vibrate as a whole at certain or all frequencies and consequently do not faithfully reproduce sound.
  • Fig. 1 is a side view, partly in section, of a conical diaphragm equipped with stiffening rings, according to my invention
  • Fig. 2 is an enlarged view of the section at the edge of the cone.
  • a cone preferably made of paper.
  • a metal ferrule 11 preferably of aluminum, having attached thereto a driving rod 12, is attached.
  • a flanged ring 14 is glued to the cone.
  • a flange 13 is bent at such an angle that when the ring 14 is glued to the cone the flange is substantially perpendicular to the axis of the cone.
  • the flange 13 is used to support the cone.
  • the spacin and number of these rings depends upon t e size of the cone and upon the materials used for the cone and for the rings.
  • the rings 14 and 15 may be a high grade cardboard known as Bristol board, but any other material having the required rigidity may be used.
  • the tendency of the cone to distort becomes greater towards the edge, and the spacing between the flanges has therefore been so graded that the distance between rings 14 and 15 is the smallest, and that between the ferrule 11 and a ring 15 is the greatest, of the spaces used.
  • a conical diaphragm for sound reprodlicers having a flanged ring attached to its exterior surface intermediate its edge and apex.
  • a cone speaker having a smooth interior with circumferential stiffening means on the exterior surface between the apex and base.
  • a conical diaphragm for sound reproducers having flanged rings attached to its surface intermediate its edge and apex and spaced at unequal distances from each other.
  • a conical diaphragm for sound reproducers having flanged rings attached to its surface intermediate its edge and apex, the spaces between said rings being graded and the largest being nearest the apex.
  • a sound producer including a conical diaphragm, and a plurality of flanges, attached to the exterior surface of said cone, said flanges being substantially perpendicularto the axis thereof.
  • a sound producer including a conical diaphragm and a plurality of flanges attached to and substantially perpendicular to the axis of, said cone, the spacing between said flanges being graded and arranged so that the largest space is nearest the apex.

Description

April 8, 1930. w. B. POTTER SOUND PRODUCING DEVICE Filed April 12. 1928 Inventor: William B. Potter by His Attorney Patented Apr. 8, 1930 UNITED STATES PATENT OFFICE WILLIAM B. POTTER, OF SCHENECTADY, NEW YORK, ASSIGN'OIB. TOGENEBAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK SOUND-PRODUCING DEVICE Application filed April 12, 1928. Serial No. 269,519.
The weight of the paper utilized for this purpose should be as light as possible consistent with the power of the driving means, but many of the paper diaphragms heretofore provided are not stiif enough to vibrate as a whole at certain or all frequencies and consequently do not faithfully reproduce sound.
The various methods proposed in the past for eliminating sound distortion have not been altogether satisfactory. I have found that flanged rings of a suitable material attached to the cone at predetermined intervals between the apex and the edge will eliminate the undesired distortion and eflect faithful reproduction of sound even at greatly amplified driving power.
The novel features which I believe characteristic of my invention are pointed out in the appended claims. My invention it self, however, will best be understood from the following specification when considered in connection with the accompanying drawings in which Fig. 1 is a side view, partly in section, of a conical diaphragm equipped with stiffening rings, according to my invention, and Fig. 2 is an enlarged view of the section at the edge of the cone.
Referring to the drawing in detail 10 is a cone preferably made of paper. At the apex of the cone 10 a metal ferrule 11, preferably of aluminum, having attached thereto a driving rod 12, is attached. At the edge of the cone 10, a flanged ring 14 is glued to the cone.
A flange 13 is bent at such an angle that when the ring 14 is glued to the cone the flange is substantially perpendicular to the axis of the cone. The flange 13 is used to support the cone. Other flanged rings 15, having flanges 16, also substantially perpendicular to the ,by Letters Patent of the United States, is
axis, are glued or otherwise attached to the cone at intervals between the ferrule 11 and ring 14. The spacin and number of these rings depends upon t e size of the cone and upon the materials used for the cone and for the rings. The rings 14 and 15 may be a high grade cardboard known as Bristol board, but any other material having the required rigidity may be used. The tendency of the cone to distort becomes greater towards the edge, and the spacing between the flanges has therefore been so graded that the distance between rings 14 and 15 is the smallest, and that between the ferrule 11 and a ring 15 is the greatest, of the spaces used. By thus grading the spacing between the flanges maximum rlgidity is secured without unduly increasing the weight of the cone.
What I claim as new and desire to secure 1. A conical diaphragm for sound reprodlicers having a flanged ring attached to its exterior surface intermediate its edge and apex.
2. A cone speaker, having a smooth interior with circumferential stiffening means on the exterior surface between the apex and base.
3. A conical diaphragm for sound reproducers having flanged rings attached to its surface intermediate its edge and apex and spaced at unequal distances from each other.
. 4. A conical diaphragm for sound reproducers having flanged rings attached to its surface intermediate its edge and apex, the spaces between said rings being graded and the largest being nearest the apex.
'5. A sound producer including a conical diaphragm, and a plurality of flanges, attached to the exterior surface of said cone, said flanges being substantially perpendicularto the axis thereof.
6. A sound producer including a conical diaphragm and a plurality of flanges attached to and substantially perpendicular to the axis of, said cone, the spacing between said flanges being graded and arranged so that the largest space is nearest the apex. F
In witness whereof, I have hereunto'set my hand this 11th davofApriL- 1928.
' WILLIAMIB'. POTTER.
US269519A 1926-12-03 1928-04-12 Sound-producing device Expired - Lifetime US1754044A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US269519A US1754044A (en) 1928-04-12 1928-04-12 Sound-producing device
BE359759A BE359759R (en) 1926-12-14 1929-04-11 Loudspeaker enhancements
FR36830D FR36830E (en) 1926-12-03 1929-04-12 Loudspeaker enhancements
GB11367/29A GB309555A (en) 1928-04-12 1929-04-12 Improvements in and relating to sound producing devices
DEA57461D DE601827C (en) 1928-04-12 1929-04-13 Cone-shaped membrane for loudspeakers
FR37341D FR37341E (en) 1926-12-03 1929-07-23 Loudspeaker enhancements
FR38139D FR38139E (en) 1926-12-03 1930-03-14 Loudspeaker enhancements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US269519A US1754044A (en) 1928-04-12 1928-04-12 Sound-producing device

Publications (1)

Publication Number Publication Date
US1754044A true US1754044A (en) 1930-04-08

Family

ID=23027615

Family Applications (1)

Application Number Title Priority Date Filing Date
US269519A Expired - Lifetime US1754044A (en) 1926-12-03 1928-04-12 Sound-producing device

Country Status (3)

Country Link
US (1) US1754044A (en)
DE (1) DE601827C (en)
GB (1) GB309555A (en)

Also Published As

Publication number Publication date
GB309555A (en) 1930-04-03
DE601827C (en) 1934-08-25

Similar Documents

Publication Publication Date Title
US1869665A (en) Loud speaker
US1754044A (en) Sound-producing device
US2238741A (en) Electrodynamic transducer
US1872799A (en) Electrical apparatus
US2127110A (en) Acoustic device
US2115924A (en) Acoustic apparatus
US1832832A (en) Sound reproducing means
US1673939A (en) Diaphragm for loud speakers
US1514511A (en) Sound transmitting and receiving diaphragm
US1776902A (en) Sound amplifier
US1819627A (en) Sound reproducer and method of manufacturing the same
US1847907A (en) Acoustic diaphragm
US1827283A (en) Sound reproducer
US1820137A (en) Maximum range radio loud speaker
US1778671A (en) Suspension means for sound-reproducing devices
US1751356A (en) Diaphragm
US1893049A (en) Sound producing device
US1907449A (en) Loudspeaker
US1762184A (en) Acoustic device
US1745686A (en) Mounting for phonic diaphragms
US1834291A (en) Sound reproducing diaphragm
US1815945A (en) Loud speaker
US1707658A (en) Sound-reproducing device
US1722020A (en) Sound reproducer
US1634380A (en) Sound box for gramophones and similar instruments