US3331928A - Ignition distributor contact-breaker for an internal combustion engine - Google Patents

Ignition distributor contact-breaker for an internal combustion engine Download PDF

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Publication number
US3331928A
US3331928A US497071A US49707165A US3331928A US 3331928 A US3331928 A US 3331928A US 497071 A US497071 A US 497071A US 49707165 A US49707165 A US 49707165A US 3331928 A US3331928 A US 3331928A
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United States
Prior art keywords
contact
spring leaf
cam
breaker
leaf
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Expired - Lifetime
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US497071A
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English (en)
Inventor
Blaser Hans
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Individual
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Individual
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Publication of US3331928A publication Critical patent/US3331928A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/60—Devices for interrupted current collection, e.g. commutating device, distributor, interrupter

Definitions

  • ABSTRACT OF THE DISCLOSURE A contact-breaker for internal combustion engines wherein a cam is mounted on the distributor shaft for controlling the contacts, having a first spring leaf carrying the contact with a very small inertia applied elastically at one end against the cam while the other end is engaged in an axial slot in an insulating support, and a second spring leaf carrying the second contact and disposed adjacent to the first spring leaf with the two contacts facing, the second spring leaf being more rigid than the first but giving way under the thrust exerted by the contact of said first spring leaf moved by the cam.
  • the present invention concerns an ignition distributor contact-breaker for an internal combustion engine in which the contacts are controlled by a cam carried by the distributor shaft.
  • each contact is carried by a spring leaf embedded at one end in a fixed support, in that one of said leaves is applied elastically against said cam and in that the other leaf is disposed adjacent to the first in such a way that the cam closes the contacts, the second leaf being more rigid than the first but giving way under the thrust exerted by the contact of said first leaf moved by the cam.
  • FIG. 1 is a view in elevation of this contact-breaker.
  • FIG. 2 is a plan view thereof.
  • the contact-breaker shown forms part of an ignition distributor for a four cylinder internal combustion engine of the well known type and of which alone the breakercarrier platen 1 with the cam 2 for the control of the contacts 3 and 4 of the contact-breaker are shown.
  • Each contact 3 and 4 is carried by a spring leaf 5 and 6 respectively.
  • the leaf 5 is embedded at one end in a support 7 of an insulating material as for example polyamide and the leaf 6 is fixed in a support 8 of metal connected to the mass.
  • the supports 7 and 8 have vertical slots and each is pivotally mounted on a metallic spindle 7 and 8' respectively, parallel to the axis XX of the distributor shaft.
  • the control cam 2 is of insulating material resisting to heat and wear, for example in polyamide or in polytetrafluorethylene.
  • a spring leaf 9 is fixed on the lower part of the support 7 and its free end '9' is slightly turned ugpwards as shown in FIG. 1.
  • This spring leaf 9 constitutes an elastic lever serving to position the contact leaf 5 against the cam 2.
  • the platen 1 has a hooking member or a stop 10 against which is held the spring leaf 9 after it has been pivoted in the direction of the arrow to apply the contact leaf 5 against the cam 2 and tighten the contact plate 5' in the support 7, this plate 5' being welded to the lead C connected to the induction coil (not shown).
  • the support 8 carries similarly to the support 7 a spring leaf 11 for tensioning the contact leaf 6 which is more rigid than the leaf 5 and the free end of which bears against a folded part 12 of an adjustable stop member 13 fixed on the platen 1.
  • the spring leaf 11 is held or hooked in its stretched position by a stop 14 similar to the stop 10.
  • the end of the contact leaf 6 embedded in the support 8 is fixed by a screw 15 penetrating into a notch 16 made in the leaf 6.
  • the contacts 3 and 4 of the contact-breaker are separated one from the other.
  • the separation between these contacts may be adjusted by unscrewing the attachment screws of the stop member 13 on the platen 1 and by modifying the position of the bent part 12 holding the end of the leaf 6.
  • the cam 2 rotates, it closes the contacts 3 and 4 each time that one of its tips passes against the leaf 5.
  • the contact 3 is applied against the contact 4 the leaf 6 of which gives way elastically.
  • the leaf 6 pushes back the contact 3 with the leaf 5 the elasticity of which also serves to apply it against the flat part of the cam 2 in the position shown in FIG. 2.
  • One advantage of the contact-breaker described resides in the fact that the spring leaf 5 having a very small inertia given its minimum weight, has no tendency to remain separated from the cam 2 for high speeds of rotation as is the case with rigid and heavier oscillating pawls generally employed in known ignition distributors.
  • the resistance due to the friction met with up to the present on the pivoting axis of the oscillating pawl is eliminated in the contact-breaker described as well as the insulating projection entering into contact with the steel cam and which increases the weight and thus the inertia of the oscillating pawl.
  • An ignition distributor contact-breaker for internal combustion engines of the type having a cam mounted on the distributor shaft for controlling the contacts, the combination comprising a first spring leaf carrying a first contact and having a very small inertia, said first spring leaf being applied elastically at one end against said cam while the other end of said first spring leaf is engaged in an axial slot in an insulating support, and a second spring leaf carrying a second contact and disposed adjacent to the first spring leaf with the two contacts facing, the second spring leaf being more rigid than the first but giving way under the thrust exerted by the contact of said first spring leaf moved by the earn.
  • this stop member being adjustable as regards its position to permit of adjusting the separation of the contacts.

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  • Ignition Installations For Internal Combustion Engines (AREA)
US497071A 1964-10-20 1965-10-18 Ignition distributor contact-breaker for an internal combustion engine Expired - Lifetime US3331928A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1356164A CH411459A (fr) 1964-10-20 1964-10-20 Rupteur de distributeur d'allumage pour moteur à explosion

Publications (1)

Publication Number Publication Date
US3331928A true US3331928A (en) 1967-07-18

Family

ID=4393469

Family Applications (1)

Application Number Title Priority Date Filing Date
US497071A Expired - Lifetime US3331928A (en) 1964-10-20 1965-10-18 Ignition distributor contact-breaker for an internal combustion engine

Country Status (4)

Country Link
US (1) US3331928A (fr)
CH (1) CH411459A (fr)
DE (1) DE1476300A1 (fr)
GB (1) GB1077640A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593236A (en) * 1970-03-23 1971-07-13 Itt Magnetic switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341390A (en) * 1942-03-28 1944-02-08 Eisemann Corp Circuit making-and-breaking mechanism
US2644863A (en) * 1948-10-28 1953-07-07 Raytheon Mfg Co Electrical switch
US2689892A (en) * 1950-12-26 1954-09-21 Bendix Aviat Corp Switch mechanism
US3172967A (en) * 1965-03-09 Composite construction for distributor components

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3172967A (en) * 1965-03-09 Composite construction for distributor components
US2341390A (en) * 1942-03-28 1944-02-08 Eisemann Corp Circuit making-and-breaking mechanism
US2644863A (en) * 1948-10-28 1953-07-07 Raytheon Mfg Co Electrical switch
US2689892A (en) * 1950-12-26 1954-09-21 Bendix Aviat Corp Switch mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593236A (en) * 1970-03-23 1971-07-13 Itt Magnetic switch

Also Published As

Publication number Publication date
DE1476300A1 (de) 1969-10-09
GB1077640A (en) 1967-08-02
CH411459A (fr) 1966-04-15

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