US1553082A - Spark control for internal-combustion engines - Google Patents

Spark control for internal-combustion engines Download PDF

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Publication number
US1553082A
US1553082A US663757A US66375723A US1553082A US 1553082 A US1553082 A US 1553082A US 663757 A US663757 A US 663757A US 66375723 A US66375723 A US 66375723A US 1553082 A US1553082 A US 1553082A
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shaft
internal
sleeve
combustion engines
spark control
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US663757A
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Isojoki Jalmer
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means
    • F02P5/06—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on engine speed

Definitions

  • This invention relates to an automatic spark control mechanism for internal combustion engines.
  • Another object is to provide a novel means to accomplish the end stated which is controlled by a governor.
  • Figure 1 is a view showing the device in elevation
  • Figure 2 is a sectional view taken substantially on the line 2 2 of Figure 1, and
  • Figure 3 is a side view of the timer.
  • the invention is practiced in connection with a timer or commutator such as is used on automobiles, tractors and the like and a g conventional form of'which is shown at 10 having a shell or casing 11, provided with contacts 12 at spaced intervals and which are adapted to be wiped by a contact roller 13 in order to successively close and open electric circuits through the spark plugs of the cylinders of the engine in a manner well understood.
  • the contacts 12 are insulated from the wheel as at 14 and the roller 13 is carried by a bracket 15 fastened on va shaft 16 rotatably mountedV in the shell.
  • the shell is also capable of slight rotary or turning movement about the axis of shaft 16 and independently' thereof.
  • a governor rod or shaft 17 is journalled and fastened against longitudinal movement in asuitable bracket 18, fastened to any suitable support or part on the automobile or tractor.
  • Shaft 17 has a bevel gear 19 fixed thereon which meshes with a bevel gear 20, keyed on shaft'16.
  • a sleeve 21 Slidably disposed on shaft 17 is a sleeve 21, which is in turnslidable through a hollow arm 22 of a'bracket 23 adapted for connection to a suitable part of the automobile or tractor.
  • the sleeve 21 is also free to turn on a shaft 17 and in arm 22.
  • V-shaped head 25 Rigidly fastened as by rivets 24 to shaft 17 is a V-shaped head 25 to which elbow shaped arms or levers 26 are pivoted by pins 27.
  • the longer arms of levers 26 have Vballs or governor weights 28 thereon while the shorter arms extend into an ⁇ annular groove 29 in sleeve 21.
  • An expansive coil spring 30 surrounds sleeve 21, abutting arm 22 at one end and one of two flanges 31 at the other'end, and between which flanges said groove 29 is provided.
  • a link 32 is pivotally connected at 33 to shell 11 and at 34 to sleeve 21.
  • shaft 16 constantly rotates whereby the roller 13 successively wipes the contacts 12 and thereby successively fires the spark plugs of the engine in the manner well understood.
  • the spring 30 maintains the parts, when the engine is idle in such position that cranking of the engine will not produce back-fire.
  • shaft 16 turns gear 20 which rotates ear 19 and shaft 17.
  • centrifugal force will throw the weights 28 outwardly from the full line to the dotted line position of Figure 1, and their position will constantly change according to the speed at which such shaft 17 is driven.
  • Weights 28 thus swing the levers 26 and by their disposition in groove 29 to slide sleeve 21 on shaft 17.
  • This sliding movement of sleeve 21 moves link 32 and causes it to rock the timer shell 11 and thereby move 'the contacts thereof closer or farther from the roller 13 to retard or advance the time of.y contact and accordingly of firing, according to the speed of the shafts 16 and 17.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Description

Sept. v8, 192s. 1,553,082
' J. ISOJOKI SPARK CONTROL FOR INTERNAL COMBUSTIION ENGINES Filed Sept'. 20. 1923 `Patented Sept. j8, 1925:.
f JALMER IsoJoKI, or DET'RQHT,
SPARK CONTROL FOR INTERNAL-COMBUSTION :EN(zrIIISl'ES.`
Applcationvled September 20, 1923. Serial No. 663,757.
To all whom t may concern Be it known that I, JALMER IsoJoKi, a citizen of the United States, residing at Detroit, in the county of Wayne and State of 5 Michigan, have invented certain new and useful Improvements in Spark Controls for Internal-Combustion Engines, of which the following is a specification.
This invention relates to an automatic spark control mechanism for internal combustion engines.
It is aimed to provide an inexpensive, efficient and durable means operable automatically according to the speed of the engine in order to vary the time of production of the spark or firing, that is, advance or retard it.
Another object is to provide a novel means to accomplish the end stated which is controlled by a governor.
Various additional objects and advantages will appear from the description following, taken in connection with the accompanying drawings illustrating an operative embodi ment.
In said drawings Figure 1 is a view showing the device in elevation;
Figure 2 is a sectional view taken substantially on the line 2 2 of Figure 1, and
Figure 3 is a side view of the timer.
Like reference characters designate like cr corresponding parts in the different views.
The invention is practiced in connection with a timer or commutator such as is used on automobiles, tractors and the like and a g conventional form of'which is shown at 10 having a shell or casing 11, provided with contacts 12 at spaced intervals and which are adapted to be wiped by a contact roller 13 in order to successively close and open electric circuits through the spark plugs of the cylinders of the engine in a manner well understood. The contacts 12 are insulated from the wheel as at 14 and the roller 13 is carried by a bracket 15 fastened on va shaft 16 rotatably mountedV in the shell. The shell is also capable of slight rotary or turning movement about the axis of shaft 16 and independently' thereof.
A governor rod or shaft 17 is journalled and fastened against longitudinal movement in asuitable bracket 18, fastened to any suitable support or part on the automobile or tractor. Shaft 17 has a bevel gear 19 fixed thereon which meshes with a bevel gear 20, keyed on shaft'16.
Slidably disposed on shaft 17 is a sleeve 21, which is in turnslidable through a hollow arm 22 of a'bracket 23 adapted for connection to a suitable part of the automobile or tractor. The sleeve 21 is also free to turn on a shaft 17 and in arm 22.
Rigidly fastened as by rivets 24 to shaft 17 is a V-shaped head 25 to which elbow shaped arms or levers 26 are pivoted by pins 27. The longer arms of levers 26 have Vballs or governor weights 28 thereon while the shorter arms extend into an `annular groove 29 in sleeve 21. An expansive coil spring 30 surrounds sleeve 21, abutting arm 22 at one end and one of two flanges 31 at the other'end, and between which flanges said groove 29 is provided. A link 32 is pivotally connected at 33 to shell 11 and at 34 to sleeve 21.
In use, shaft 16 constantly rotates whereby the roller 13 successively wipes the contacts 12 and thereby successively fires the spark plugs of the engine in the manner well understood. The spring 30 maintains the parts, when the engine is idle in such position that cranking of the engine will not produce back-fire. When the engine is in motion, shaft 16 turns gear 20 which rotates ear 19 and shaft 17. By rotation of shaft 17, centrifugal force will throw the weights 28 outwardly from the full line to the dotted line position of Figure 1, and their position will constantly change according to the speed at which such shaft 17 is driven.
Weights 28 thus swing the levers 26 and by their disposition in groove 29 to slide sleeve 21 on shaft 17. This sliding movement of sleeve 21 moves link 32 and causes it to rock the timer shell 11 and thereby move 'the contacts thereof closer or farther from the roller 13 to retard or advance the time of.y contact and accordingly of firing, according to the speed of the shafts 16 and 17.
2f i i 'I 1,553,08e
I olaim5 said flanges and said hollow arm, a head on In combination, a timer shell, a Contact said second shaft, elbow levers on said head shaft coacting therewith, a shaft driven extending into said groove, governor on said from said shaft, means mounting the seclevers, and a link connection between said 5 ond shaft against longitudinal movement, sleeve and said timer shell, said spring and 15 a sleeve slidable on the second shaft,A a hol; link connection being on opposite sides of low arm in which said sleeve is disposed, Said hollow am@ i flanges on said sleeve providing a groove In testimony whereofI affix my signature. between them, an expansive spring sur- 10 rounding the sleeve and engaging one of Y 1 JALlVlER ISOJ OKI.
US663757A 1923-09-20 1923-09-20 Spark control for internal-combustion engines Expired - Lifetime US1553082A (en)

Priority Applications (1)

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US663757A US1553082A (en) 1923-09-20 1923-09-20 Spark control for internal-combustion engines

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