US2344119A - Electromagnetic signal hooter - Google Patents

Electromagnetic signal hooter Download PDF

Info

Publication number
US2344119A
US2344119A US366912A US36691240A US2344119A US 2344119 A US2344119 A US 2344119A US 366912 A US366912 A US 366912A US 36691240 A US36691240 A US 36691240A US 2344119 A US2344119 A US 2344119A
Authority
US
United States
Prior art keywords
horn
electromagnetic signal
hooter
interrupter
electromagnet
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
US366912A
Inventor
Zeininger Gustav
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
Application granted granted Critical
Publication of US2344119A publication Critical patent/US2344119A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • G10K9/15—Self-interrupting arrangements

Definitions

  • This invention relates to electromagnetic signal horns or hooters of the type used in motor vehicles.
  • Another object of the invention is to provide means for preventing the distortion of the sound of the horn produced in the conventional horns as a result of a too high operating voltage, which of course is due to the variations of the battery voltage arising from the different charging conditions of the same.
  • I provide on the electromagnet an auxiliary winding which is connected across the contacts of the interrupter and consists of a smaller gauge wire than the main winding, the auxiliary winding being arranged so as to produce a unidirectional magnetising effect with that of the main winding.
  • the horn comprises a diaphragm I connected to, and oscillated by, an armature 2 forming part of an electromagnet 3 including a main winding 4 and an auxiliary winding 5 being inductively intercoupled.
  • the diaphragm at its rim is held between rings l4.
  • the auxiliary winding 5 consists of a thinner wire than the main winding 4, for instance, of a wire having half the diameter of the main winding 4, and is arranged to cause a magnetisation in the direction of arrow I2, 1. e., in the same direction as that of the main coil 4 which is indicated by arrow 13, when both coils are energized.
  • the armature 2 actuates a contact spring 6 of an interrupter whose contacts 1, l are connected in series with the main coil 4, whilst the auxiliary winding 5 is connected in parallel with the interrupter contacts 1, 1, whereby the potential produced at the terminals of the main coil 4 due to selfinduction is permitted to equalize. Owing to the spark diminishing or extinguishing effect thereby attained the condenser which usually is Germany; Custodian 1940, Serial No. 366,912 vember 21, 1939 connected across the interrupter contacts may be dispensed with.
  • auxiliary coil 5 a pure sound is produced even if the operating voltage exceeds the nominal voltage of the horn.
  • the purity of the tone produced by the horn becomes independent of the voltage variations of the source of current 9 of the horn.
  • the current consumption of the auxiliary coil 5 is very small.
  • a push button 8 serves for switching in the horn.
  • the battery 9 for the horn may be charged from a generator I I, through an automatic switch Ill.
  • An electromagnetic horn comprising an electromagnet, a sound producing diaphragm, an armature for operating said diaphragm and an interrupter, actuated by said armature, for said electromagnet, said electromagnet including a main winding and an auxiliary winding, both controlled by said interrupter during the operation of said horn, said windings being inductively intercoupled and said auxiliary winding being connected across the interrupter contacts, to energize the electromagnet in the same direction as the main winding.
  • An electromagnetic signal horn comprising an electromagnet, a sound producing diaphragm, an armature for operating said diaphragm and an interrupter, actuated by said armature, for said electromagnet, said electromagnet including a main winding and an auxiliary winding, both controlled by said interrupter during the operation of said horn, said windings being inductively intercoupled and said auxiliary winding c0hsisting of thinner wire than that of the main Winding and being connected across the interrupter contacts, to energize the electromagnet in the same direction as the main winding.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnets (AREA)

Description

March 14, 1944. zElNlNGER 2,344,119
ELECTROMAGNETIC SIGNAL HOOTER Filed Nov. 23, 1940 /n venfor Affo/ney Patented Mar. 14, 1944 OFFICE ELECTROMAGNETIC SIGNAL HOOTER Gustav Zeininger, Oberesslingen, vested in the Alien Property Application November 23 In Germany No 2 Claims.
This invention relates to electromagnetic signal horns or hooters of the type used in motor vehicles.
It is an important object of the present invention to provide means in devices of the type referred to for ensuring an eflicient spark reducing or quenching at the contacts of the interrupter.
Another object of the invention is to provide means for preventing the distortion of the sound of the horn produced in the conventional horns as a result of a too high operating voltage, which of course is due to the variations of the battery voltage arising from the different charging conditions of the same.
With these objects in view, I provide on the electromagnet an auxiliary winding which is connected across the contacts of the interrupter and consists of a smaller gauge wire than the main winding, the auxiliary winding being arranged so as to produce a unidirectional magnetising effect with that of the main winding.
The invention will be better understood by reference to the following detailed description in connection with the accompanying drawing, showing by way of example and purely schematically a diagram of connection of a signal horn device having the invention applied thereto.
It will be seen from the drawing that the horn comprises a diaphragm I connected to, and oscillated by, an armature 2 forming part of an electromagnet 3 including a main winding 4 and an auxiliary winding 5 being inductively intercoupled. The diaphragm at its rim is held between rings l4. The auxiliary winding 5 consists of a thinner wire than the main winding 4, for instance, of a wire having half the diameter of the main winding 4, and is arranged to cause a magnetisation in the direction of arrow I2, 1. e., in the same direction as that of the main coil 4 which is indicated by arrow 13, when both coils are energized.
The armature 2 actuates a contact spring 6 of an interrupter whose contacts 1, l are connected in series with the main coil 4, whilst the auxiliary winding 5 is connected in parallel with the interrupter contacts 1, 1, whereby the potential produced at the terminals of the main coil 4 due to selfinduction is permitted to equalize. Owing to the spark diminishing or extinguishing effect thereby attained the condenser which usually is Germany; Custodian 1940, Serial No. 366,912 vember 21, 1939 connected across the interrupter contacts may be dispensed with.
Moreover, it has been found that by provision of the auxiliary coil 5 a pure sound is produced even if the operating voltage exceeds the nominal voltage of the horn. Thus, the purity of the tone produced by the horn becomes independent of the voltage variations of the source of current 9 of the horn. The current consumption of the auxiliary coil 5 is very small.
A push button 8 serves for switching in the horn. The battery 9 for the horn may be charged from a generator I I, through an automatic switch Ill.
The method and apparatus of the present invention have been described in detail with reference to a specific embodiment. It is to be understood, however, that the invention is not limited by such specific reference but is broader in scope and capable of other embodiments than that specifically described and illustrated in the drawing.
I claim:
1. An electromagnetic horn comprising an electromagnet, a sound producing diaphragm, an armature for operating said diaphragm and an interrupter, actuated by said armature, for said electromagnet, said electromagnet including a main winding and an auxiliary winding, both controlled by said interrupter during the operation of said horn, said windings being inductively intercoupled and said auxiliary winding being connected across the interrupter contacts, to energize the electromagnet in the same direction as the main winding.
2. An electromagnetic signal horn comprising an electromagnet, a sound producing diaphragm, an armature for operating said diaphragm and an interrupter, actuated by said armature, for said electromagnet, said electromagnet including a main winding and an auxiliary winding, both controlled by said interrupter during the operation of said horn, said windings being inductively intercoupled and said auxiliary winding c0hsisting of thinner wire than that of the main Winding and being connected across the interrupter contacts, to energize the electromagnet in the same direction as the main winding.
GUSTAV ZEININ GER.
US366912A 1939-11-21 1940-11-23 Electromagnetic signal hooter Expired - Lifetime US2344119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2344119X 1939-11-21

Publications (1)

Publication Number Publication Date
US2344119A true US2344119A (en) 1944-03-14

Family

ID=7995159

Family Applications (1)

Application Number Title Priority Date Filing Date
US366912A Expired - Lifetime US2344119A (en) 1939-11-21 1940-11-23 Electromagnetic signal hooter

Country Status (1)

Country Link
US (1) US2344119A (en)

Similar Documents

Publication Publication Date Title
US2698366A (en) Electromagnetic chopper
US2278967A (en) Electromagnetic mechanism
US2344119A (en) Electromagnetic signal hooter
US2299671A (en) Electromagnetic motor switch
GB149673A (en) Improvements in electro-magnetic overload cut-outs
US2001579A (en) Generator regulating device
GB1164089A (en) Apparatus for Generating Non-Periodic Electric Sparks
US2391668A (en) Mounting means
US2180159A (en) Electromagnetic device
US2439107A (en) Vibrator circuit
US947155A (en) Sparking device.
US1821813A (en) Circuit making and breaking device
US1632609A (en) Electrical instrument
US2140094A (en) Voltage transformation apparatus
US1437421A (en) Electric motor
US2078316A (en) Vibrator
US1765958A (en) Electromagnet
US1414105A (en) Telephone receiver
US2223564A (en) Vibrator circuit
US1110543A (en) Starting and controlling device for electric vapor apparatus.
US1451495A (en) Audible-signal device
GB124041A (en) Improvements in and relating to Electrical Contact Making and Breaking Apparatus.
US2240255A (en) Horn
US714020A (en) Electric interrupter.
US2972070A (en) Vibrator