US1452601A - Ignition system for combustion engines - Google Patents

Description

Apr. 24, 1923. 4 g 1,452,601

W. C. HEATH IGNITION SYSTEM FOR COMBUSTION ENGINES Filed May 14 1920 2 Sheets-Sheet l Apr. 24, 1923.

W. C. HEATH IGNITION SYSTEM FOR COMBUSTION ENGINES 2 Sheets-Sheet 2 Patented A nea, 1923.

: .-UNITED{STATES WILLIAM HEATILVOF BELOIT, WISCONSIN, ssIeivoR To FAIRBANKS, ivioRsE &

a 1 or oI-I oAeo, I LINoIs; A CORP RAT ON orILnInoIs I IGNITION SYSTEM lr'on Application fiieaiviay 14,

T all whom it vnayponccrn g Be it knownthatl, WILLIAM C. HEATH, a citizen of the :United States, residing at Beloit, in the county of Rock and State of l/Visconsin, have invented a certain newand useful Improvement in IgnitionSystems for Combustion Engines, of which the follow ing is a specification.

Thisinvention relates to a.-firing mechanism for the cylinder of an internal. com-. bustion engine, particularly one in .which the firing is done by. a low tension oscillating magneto located at some little distance therefrom. i

The object of the invention is to under these conditions connect the parts in such a manner that the firing is accurately and positively done at the proper time so as to obtain best operating results. The invention consists in means for carrying out the foregoing objects which can be easily and cheaply made, which is compact and simple in construction, which works practically perfectly and is not liable to get out of order. More particularly the invention consists in features and details of construction hereafter more fully set forth in the specification and claim. Referring to the drawings in which similar numerals represent the same parts thruout the several views, a

Figure 1 is a plan view of mechanism illustrating this invention in its preferred form.

Figure 2 is a side view of the parts of Figure 1.

I Figure 3 is an end detail view of the firing electrodes and attached parts removed from the engine cylinder. 1

Figures 1 and 2 show fragmentary portions of the cylinder of a combustion engine perforated to receive a plug or head 12 detachably secured in place by any suitable means, as for instance a cover 40 having arms 15 fastened to the cylinder by screws 14- Extending thru this cylinder head or block 12 are two electrodes 16 and 18,the former stationary, and carried in insulated material 20, the latter rotatable and without insulation and therefore grounded. Electrode 16 carries a firing contact 22 detachably engaged byfiring contact 24 on an arm 26 rotatable with and by member 18. Electrode 18 also carries a lever arm28'pushed in one l 55 direction by a compression spring sock'et- C I BUs rIou ENGINEs. I

1920. s aiivo. 381,505.

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ed at'32 a suitable projection on the plug 7 12 outs de the cylinder. The end "of stationary electrode 16 whichis outside the cylinder is screw threaded and provided with suitable nuts 34 and 36 to receive the end of the w1re38 leading tothe ma-gneto- The parts of the electrodes which are outside of the plug 12 and their attached parts areenv close'dwithin a suitable case 40 detachably secured to the face. ofv the plugr12 byscrews l4, heretoforelreferred to. .:Case 4051s perforated at 4 2 to let the wire-3 8 go thru it and is also perforated at..44 to provide a slidingsupport for a reciprocatable push rod 46 leading to themagneto. Theend 48 of this rod 46 which enters the casel40: engages the arm 28 and rocks it in a clockwise direetionagainst'the action of-spring30. l

Rod 46 maybe of any'suitable length required to '-reach the magneto mechanism in itsselected positionadjacentto the engine cylinder. The end 50 of the rod 46 which is opposite to end 48is reciprocatably mounted on a suitable portion,'as for instance, a pro ectlng lug 52 on the front frame plate 54 of the low tension magneto. This magneto is electrically of ordinary construction, comprising the magnets 56 and the rotatable armature 58, carried on shaft 60 whose front end is journaled in plate 54.

Front plate 54 is provided with forwardly projecting arms 62 and 64 located in the same horizontal plane on opposite sides of the center of shaft 60, said arms carrying projecting bolts or pins 66 toeach of which is attached a retractile spring 68 in turn loosely connected in the usualmanner to-the adjacent one of 'a pair of integrally connected, oppositely disposed oscillating arms 70 detachably secured to the shaft 60 means of a nut 72.

' Depending from this member 70 is the usual operating arm 74 driven in the usual manner by the pin 76 carried on arotating arm 7 8 propelled by the engine mechanism in the direction of the arrow 80.

Inside of arms62 and 64 and behind the member'70, is a cam 82 detachably secured.

lit

ranged and shaped that the rocking of arm the armfl'l' l in its dotted line position and oscillates it'to the left as viewed vin"I i, ;*111'e 2 untilthe pin 76 passes off from the end of the arm whereupon the springs [68 return the armatu're'to original position. This oscillation of the armature generates the usual current which passes :ifrom'the armature to the'ivire 38, to'electrode l6, thenceacross the contacts 22 and'Qt to electrode 18, and thence backthru the. grounded fparts o'f'the device, iZQthe'm'etal of the deviceto'the armature" This movement of the armature obviously oscillates cam 82, which inturn rocks arm 86 to move rod 46' to separate the contacts 22-and' 24 at the propertime to cause the expected electric spark within theengine. By loosening the nuti72 the cam 82, and the arm? may-be adjusted angularly with reference, to each other to insure absolutely proper timing'or" the firing of the mixture in the engine cylinder.

By enclosingsthe electrode parts Within the case 40 theparts are protected from accidental injury and displacement in operation.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is p In mechanism of the class described a front frame of an oscillating magneto mech anism, arms extending forwardly from op-- posite sides of said frame, anarmature shaft extending thru said frame, oscillating mechanism for said shaft detachably secured thereto; a cam mounted on the shaft between the front plate and the oscillating mechanismand detachably a'dj'u stably held in place by the oscillating mechanism, and means for firing an engine cylinder remote from'the magnetosaid means being located in proximity to said cam and actuated thereby.

In witness whereof, I have hereunto subscribed my name in the presence oftwo Witnesses.

WILLIAM G.' HEATH.

Witnesses:

F A KG. H BART,

GEoJB. 'I NGERSOLL.

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