US1048179A - Electric-current indicator. - Google Patents

Electric-current indicator. Download PDF

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Publication number
US1048179A
US1048179A US59297910A US1910592979A US1048179A US 1048179 A US1048179 A US 1048179A US 59297910 A US59297910 A US 59297910A US 1910592979 A US1910592979 A US 1910592979A US 1048179 A US1048179 A US 1048179A
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United States
Prior art keywords
buzzer
current
electric
winding
battery
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Expired - Lifetime
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US59297910A
Inventor
Franz Kratz
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Priority to US59297910A priority Critical patent/US1048179A/en
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Publication of US1048179A publication Critical patent/US1048179A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/48—Electric arc lamps having more than two electrodes
    • H05B31/50—Electric arc lamps having more than two electrodes specially adapted for ac
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/032—Reciprocating, oscillating or vibrating motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply

Definitions

  • the invention consists in locating at a suitable place a buzzer of the usual type, for instance a Wagner hammer buzzer.
  • the buzzer is connected in. the conductor 'in which the current tlow is to be indicated, so that the opening and'closing of the buzzer contact does not interrupt the iiow of current in the conductor.
  • A is abattery
  • B a spark coil of well known construction, haying a primary winding e, and a secondary windin e2.
  • The. buzzer C consists, as usual, of t e electromagnet m, the vibrating armature o and the' contacts p and p1.
  • the secondary Winding e is connected to the spark plug g in the engine cylinder D. In the electric connections'between the battery A. and the primary e1, is inserted a Switchs, which is closed in ordinary operation. The other end of the primary winding?, e, is connected to the stationary contact tcit the mechanically actuated interrupter flhe 'movable contact f, of the nterrupter is fastened on a lever pressed by the spring /tagainst the cam d driven by the engine in the usual manner.
  • the stationary contact f is connected to a suitably grounded part, as the engine body indicated, through the condenser Z; and the movable cont-act f1 is electrically connected throu a grouiided part vto the contact p, of the zzei C.
  • the battery current passes o the en ine bodyg alternately through the winding d ithe electtomagnet and the vibratiln armature in parallel with the winding.
  • T4 erefore, as longi' as the electrical 'connection from the battery is not interrupted, the buzzer will be in action.
  • the vibrating ar- $5 mature is not able to follow-the oscillation of current produced in the winding ofl the elec- 'troniagnet by a mechanically actuated interrupter, for instance, ⁇ the buzzer will stop, which condition occurs when the number of interruptions is very great. Therefore, Wlhen the engine is running the mechanical interrupter prevents the operation of thfi buzzer.
  • a current indicator comprising a. buzzer having a Winding permanently connected in said circuit and a vibratony armature in electrical 'paralleli with the winding, and a periodically inter- 110.

Description

F. KRATZ.
BLEGTRIG CURRENT INDICATOR,
APELIGATEON IILED HDV. 18, 1910.
it gf, Patented Dec; 24, 1912.
UNITED STATES PATENT OFFICE. l
FRANZ KRATZ, F STUTTGART, GERMANY,\.\ASSIGNOR TO THE FIRM 0F ROBERT BOSCH, OF STUTTGART, GERMANY.
ELECTRIC-CURRENT INDISATOR.
Specification of Letters Patent.
Patented Dec. 24, 1912.
`Application filed November 1S, 1Mo. Serial Eo. 592,975.
In electrical sparking devices for auto"-v mobiles, for example, it very often happens that the operator forgets to cnt o' the ignition battery upon stopping the car, and then electrcmagnet or not.
it' sometime elapses before operation-is resumed, the battery niaybe entirely 'exhausted by the continuous' flow ot' current from the battery.
The invention consists in locating at a suitable place a buzzer of the usual type, for instance a Wagner hammer buzzer. The buzzer is connected in. the conductor 'in which the current tlow is to be indicated, so that the opening and'closing of the buzzer contact does not interrupt the iiow of current in the conductor. 'l` his is accomplished by connecting the vibrating arn'iature'which carries the movable buzzer cont-.ict in parallel with the Winding of the buzzer, so that a closed circuit always exists whether the armature of the buzzer is attracted by the When the armature is not so attracted the current flows thlough the electromagnet'winding, and when the arn'iature is so attracted the current -llows through the vibrating armature arid the buzzer contacts. In this way the incrementl of the armature periodically shunts the current troni the electromagnet Winding. This special manner of connecting the buzzer is Aparticularly important for sparking vdevices for internal combustion engines, bec` use every interruption in the continuous su ply of the current occasions the production of a spark at the ignition plug, which is prejudicial for the reason that the spark would occur when ignition is not desired.
The accompanying drawing forming a part of this specication isa diagrammatic view sho-wing the connections of the buzzer in accordance with the invention.
A is abattery, B a spark coil of well known construction, haying a primary winding e, and a secondary windin e2. The. buzzer C consists, as usual, of t e electromagnet m, the vibrating armature o and the' contacts p and p1.
The secondary Winding e, is connected to the spark plug g in the engine cylinder D. In the electric connections'between the battery A. and the primary e1, is inserted a Switchs, which is closed in ordinary operation. The other end of the primary winding?, e, is connected to the stationary contact tcit the mechanically actuated interrupter flhe 'movable contact f, of the nterrupter is fastened on a lever pressed by the spring /tagainst the cam d driven by the engine in the usual manner. The stationary contact f is connected to a suitably grounded part, as the engine body indicated, through the condenser Z; and the movable cont-act f1 is electrically connected throu a grouiided part vto the contact p, of the zzei C.
The battery current passes o the en ine bodyg alternately through the winding d ithe electtomagnet and the vibratiln armature in parallel with the winding. T4 erefore, as longi' as the electrical 'connection from the battery is not interrupted, the buzzer will be in action. However, when the vibrating ar- $5 mature is not able to follow-the oscillation of current produced in the winding ofl the elec- 'troniagnet by a mechanically actuated interrupter, for instance,` the buzzer will stop, which condition occurs when the number of interruptions is very great. Therefore, Wlhen the engine is running the mechanical interrupter prevents the operation of thfi buzzer. However-,if the mechanically actuated in.- tjcrrupter stops entirely, as at standstill of the engine, thel current flowing cbntinuously from the battery causes the buzzer.to operiso vate. Therefore, if'the buzzer is`locted, for
instance, onthe dashboard of ali automobile,
the operator, upon leaving tlecar; will be reminded by the i peration of the buzzer that the battery is still in circuit. i.
Having thus described my invention,'what I claim is: 1. ln combination w'ith an electric circuit, 105
through which current flows, a current indicator comprising a. buzzer having a Winding permanently connected in said circuit and a vibratony armature in electrical 'paralleli with the winding, and a periodically inter- 110.
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US59297910A 1910-11-18 1910-11-18 Electric-current indicator. Expired - Lifetime US1048179A (en)

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US59297910A US1048179A (en) 1910-11-18 1910-11-18 Electric-current indicator.

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US59297910A US1048179A (en) 1910-11-18 1910-11-18 Electric-current indicator.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756408A (en) * 1954-06-01 1956-07-24 Mckaig Electronics Inc Reminder alarm device for disconnecting vehicle lights
US2780797A (en) * 1954-06-14 1957-02-05 Gooding Gordon Warning signal to disconnect vehicle lights

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756408A (en) * 1954-06-01 1956-07-24 Mckaig Electronics Inc Reminder alarm device for disconnecting vehicle lights
US2780797A (en) * 1954-06-14 1957-02-05 Gooding Gordon Warning signal to disconnect vehicle lights

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