US1691870A - Ignition device - Google Patents

Description

' No'v. 13, 192s. 1;691,870

G. GADKE IGNITION DEVICE Filed Feb. 25. 1922 30' current.

s Patented Nov. i3,`

i UfNiTs-o PAiraNl GEORGE tannini, on PHILADELPHIA,PENNSYLVANIA, nssieNonj To vWILLIAM Gamm', i

- or PHILADELPHIA, PENNSYLVANIA. f v

' i IGNi'rIoNnEvIon.

` Application l'e'd February 25, i922, vSerial No. 539,066.

My invention relates toignition circuits for internal combustiony engines 'and more particularly relates to ignition circuits for automobiles. ,y

y The purpose yof my invention isr tok provide anlopen and closed k circuit system adaptv ed toeasy and inexpensive manufacture :that will adequately andy efficiently vmeetlservice re uirements. ,f y n husfar ignition devicesfare suchas may be roughly divided 'intogtwotypesr-the open circuitandlthe closed circuit, eachtypewith advantages,andl disadvantages lwith respect to the ottiier,`an d it is my aim toprovide improved apparatus that combines the vadvantagesa'nd `avoids the fauits of'both types, the device being both open yand closed.v

v f In both open and closed circuit devices the ignition spark is effected by breakinga' ycontactin the primary circuit. l

s "In-the open circuit typethecircuit'isvmomentg'rrily closed andbroken by cam releasel ot aspring,f contacts flying momentarilyto,

ygather and apart y"vhenthe springis released.

`rIn' this type' the batterysu'pplyingthecir# cuitdoes [not have to supply v any current Whatever except duringthe' very brief 'pe-L riods in which the contacts/are togetherand consequently thistype is economical Vwith `Hoivc'ver'while economical in the useof current itis seriously faulty initsinability to. synchronize properly duev to .fits having phases, that from spring release to Contact and from contact to spring Vbreaking of con; tact, that donotvary proportionately with the speed of the releasing cam and therefore "'witlrgthe speedy of thegengine.y '.'Theffphases from k synchronous j'spring release lto contact and'` from contact to spring breaking of contact .may forexampie together occupy 5O on the cam with a speedcorresponding to 10 miles an hour in which event they wouldy towere increased to 2 0 miles per/hour.

This fault of inability to synchronize properly in thek open circuit ktype usuallyl ont-y gather occupy 10.on the ycam if the speedl n'ientarily apart =by ya camyand'this type While high in the use. of current a'ords theoretically" perfect sy'nchronism7 `the separation of thecontacts theoretically always taking piacein phase with the cam ivhichisl turning with a velocity proportionalto the speed 4of the engine yand inphasewith the engine,-

nevertheless in most of these devices synchron' fm becomes faulty yfrom Wear ofthe engagmgused ythat in service soon Wears fromy en gagement with the cam. t

system in which a 'revolv1ng cam in phase positions ofa cam turning in phase Withjthe engine.

r ing parts, a fibre rubbing block or rollerf'be- My purpose ,is toprovide animproved ig- 'nition apparatus that is' ofy both types7 ec0`` by reason of` A further purpose is'to p rovide an ignition with thefenginepresses apivoted .intermedif i ate non-resilient member to position a contact member spring pressed toward mating engagementavitlia'second Contact member. A

revolving cam, the intermediate 1 member pressed upon it and thev tivo .contact members as `to produce a succession of Ifour-phase cy`r during Whichthe lcontactsare apart andfth'e are together and the circuit closed.y

, A vfurther purpose is tohave such spring .interlocking between the functional `memf bers as 'will avoid dancer of accidental vdist i f t placement ofv any part.

A further purpose is to so inter-relatefthe y vcies-a phaseof positive contact breaking vexactlyl synchronouswith the cam, a vphase Affurther purpose is to guard against aofi cidental backiiresyfromfreverse turning 0fl the `cam by `locking the cam fromfreyerse turning.` f K i y A further purpose 1s toprovide screw adjustment on one .of the contactmembers whereby the phase ofjbreakingcontact, which is the ignition phase, may bes'ome'what'adf vanced or retarded.

A further l urpose is to" provide `a deviee `having, improved insulation.

'ot functional members.

Figure 5 is a detail'section through 5-5 of Figure 3 to illustrate spring interlocking ot functional members in the moditied torni ot' Figure 3.

Figure G is a perspective view ot another detail.

Figure 7 is a perspective view, halt section, ora detail. V l i In 'all drawings thesame numbers reifer to ilce parts.

Describing in illustration and not in limitation z# i On ausual timer shaft 1G l rigidly mount a tlange 11 recessediat- 12` to drivingly interiocl; when turning in normal direction with lugs 13 `ot a sleeve 1i that carries the ignition cani 15? and toslieingly engage the lugs 13 whentnrning in reverse direction.

The cam is electrically insulated from the sleeveflft by means ot suitable intermediate libre' 16,4 and the-sleeve 1st carrying the cam is spring pressed to engagement with the harige 11 by ya spring 17 stopped outwardly against a pin 1S through the timer shaft.

As long asthe timer ysha't't 10 is revolving in its normaldirection the cainniiust revolve withit by reason oit interlocking engagement between the lugs 13 `and the flange 11, but reversal in the rotation direction of the shatt does not impose a corresponding reversal 1n the motion of the cam because the toe ot ,the interacting member locks the cani.

The bearing 19 ot the timer shaft is tlanged toiform ya base 2O to supporty the make and break'contact n'iechanism.

Insulation posts 21, 22 and 2B, on the base carry the terminal plates 25 ane 26 with screw terminals y2T and 2S. Y

K rl`he plate carriesa post 29 upon which is piv'oted a contact-carrying member 30, a post 31 upon which pivoted an `enagement link member 32 for interaction between the cam 15 and the lcontact-carrying member 30, 'and a' post 33 or" reduced diameter intermediate its length to give the eiilect o't a lateral recess-tor interlocking stop engagementwith a spring 34e rigidly attached to the contact.- Vcarrying member 30.

AThe plate 26 carries a, post upon which ispivoted a contact-carrying member frq a post 37 of reduced diameter intermediate its length to give the eir'iect. ot a lateral recess 'tor interlocling stop enA agement with a. spring SiS-rigidly attached to the contactcarrymg member jand a threaded split `bearing 39 for tightly and adjustably positioning a set. screw stop e10,

The contact-carrying members and 36 `carry respectively contacte 41 and 42 adapted to mating engagement. Ot these the Contact 112 on member 36 non-resiliently engages the contact 41 on member 30 which is stift and springpressed by means ot the spring 311 toward mating engagement with the -cont-act 42;

The body portions 4B and 4st respectively ot the pivoted contact-carrying members 30 and 36 are approximately non-resilient under such stresses as they may be subjected to from the springs 34 and 38, and mating contact between the members land 42 is unaccompanied byvany resilient.clepart-ui'e ot the pivoted member troni stop engagement with the screwstop 40, the spring 38 pressing the member 36 upon the screw stop being Sulliciently strong to insure this non-resilience of position with existing stresses.

Ignition is etlected by positive non-resilient interaction of parts between the camand contact L11, .avoidance ot resilience ot parts between the cani and the contact positioned by the cam. being requisite for maintenance ot' perfectl synchronism between them, any

spring in these intermediate parts introducing a lag between the ymotion of the con-` tact' and the position ot the cam. a lag which \vould i1ot vary proportionately `with the speedot thecam, and in factwhich would not vary at all, being the same at all 's peeds.

The pivoted contact-carrying member 30 is spring pressed bythe spring toward `mating engagement ot the contacts 4-1 and 42 and is stopped either upon the contact 42 or upon the pivoted link according to the position otthis link as determined by the lll() phase ot the cam 15; when stopped by the pivoted linl; the contacts are open. f

AThe cam 15 by interaction with the pivoted link 32 and the spring pressed contact-carrying member 30 is designed to produce a continuous series et' tour-phase cycles ot which the ignition phaseglhat the phase ot breaking contact between the members 41 and 42, is exactly synchronous with the cam and therefore. exact-ly synchronous with the engine synchronously driving the cam.

Each cycle in this continuons series of tour-phasecycles has a phase in which the cam positivelyv and non-resiliently mores the contact 41 frein touching engagement vwith the Contact 42 (this is the ignition phase and it is exactly synchronous with the cam)7 a phase during which the cam maintains separation between the contacts, a phase ot cani release and spring return et the membcrL-l to Contact with the member 42 from the action of the spring 34, and a phase of mating contact between the members 41 and 42. i

The pivoted link member serves not onljv to interact betr-,een the cam and the contactlln variations will without a doubt become evident to others skilled in the art, to meet individual Whim or particular need, and I` claim all suoli modifications and variations in so far as theyfall Within the reasonable spirit and scope ofA my invention.

Having thus described my invention what I claim as neiv and desire to secure by Letters Patent is N l. In an ignition devicea ti1ner shaft, a cam mounted thereon and insulated therefrom, means for driving the cam by the timer shaft, a bearing for the timer shaft, terminal plates on the bearing insulated therefrom, stiff contact members on Vthe terminal plates spring pressed intov contact engagement and a pivoted stiff member on one terminal plate simultaneously engaging "the cam and one contact member to sequentially separate the contact members from engagement.

2. In an ignition device, a timer shaft, a cam mounted thereon and insulated therefrom, means for driving the cam by the timer shaft, a bearing for the timer shaft, terminal plates on the bearing insulated therefrom, stiff contact members on the terminal plates spring pressing` into Contact engagement, an adjustable stop -for the position of one of these contact members and a pivoted stiff member on one terminal plate engaging the cam on one side and the othercontact member on the other to separate the contact members from engagement. .L

3. In an ignitionidevice, a timer shaft, a cam mounted thereon driven thereby and electrically insulated therefrom, ya terminal plate, a stiff cont-actmember pivotally mounted on the terminal plate, a recessed post on the terminal plate, a spring on the contact member interlocking with the recess of the post to prevent movement along the length of the post and pressing-against the post, a stiff pivoted link mounted on the terminal plate to simultaneously engage the cam and the contact member, interlocking "portions on the contact member andthe link, a second terminal plate and astilf contact'stop for the contactmember mounted on the `second terminal plate. Y y

4. In an ignition device,a timer shaft, a flange thereon, a cam mounted onthe shaft engaging the flange, a spring onthe shaftpressing the cam to engage `theI ange, and interlocking between the flange Vand'cam. interrelating them so that the flange is adapted to drivingly engage the cam Whenturncd in normal direction and slidinglyengage the cam when the shaft is turned in reverse direction, a stiff pivoted contact member, a stiff contact stop adapted to abruptstop engagement with the pivoted contact, a spring pressing the pivoted contact member into mating engagement: with the stop contact and-a stiff movable member engaging the pivoted contact member and at the same time slidingly engaging the cam with normal direction of rotation'of the cam and locking the cam from reverse turning. i

5. In an ignition device, a timershaft, a flange thereon, a cam mounted on the shaft engaging the flange, a spring on the shaft pressing' the camv to engage Witlrthe flange,

`interiocaing portions on the flange and cam interrelating them sot-hat the flange isadapted to drivingly engage the cam when turned in normal direction and slidingly engage the cam when turned in reverse direction, a stiff pivoted contact member, a stiff contact stop adapted to abrupt stop engagement with the pivoted contact, a spring pressing thepivoted-contact member into mating engagement with the stop contact, a stiff pivoted intermediate member simultaneously engaging the pivoted contact member and the cam locking the cani from reverse turning with reverse turning of the shaft and with normal turning of the shaft and cam periodically positively moving the` pivoted contact member from mating engagement with the contact stop.

6. ln an ignition device, al timer shaft, a bearing therefor, a flange base on the bearing, a cam mounted onthe shaft and insulated therefrom, terminal plates on the base and insulated therefrom', a `stiff contact member pivoted onone plate, a stiffl contact stop on the other plate adapted to abrupt stop engagement with' the pivoted contact member, a stiff ypivoted intermediate member on the first plate simultaneously engaging the pivoted contact member andthe cam and with normal direction of turning of the cam periodically moving the pivoted contact mlember from matingengagement with the contact stopand locking the Acam from reverse turning, anda spring on the first plate pressing the pivoted contact nicn'iber into mating engagement with the stopcontact.

7. In an ignition device, a timer-shaft, a bearing therefor, aflange base `on the bearing, a cam mounted on the shaft and insulated therefrom, terminal platesl on the base and insulated therefrom, a stiff contact niember pivoted on one plate, a stiff contact stop on the other plate adapted'to abrupt stop engagement with the pivoted contact member, a stiff member between the pivoted contact and the cam locking thecam from reversel turning and periodically positively moving the pivoted contact member vfrom mating engagement with the stop contact, and retractive means for returning the pivoted member to mating engagement with the stop contact. y

8. In an ignition device, a timer shaft, a bearing therefor, a flange base on the bearing, a cam mounted on the shaft and insulated therefrom, 'terminal plates on thebasc and insulated therefrom, a stiff contact member pivotcd on one plate, a stiff stop contact member on the other plate adapted to abrupt stop engagement' with the pivotedfcontact member, a. stiff member betweenwthe pivoted k'second terminal plate for slight adjustment of the position of the stopcontact and retractive-means for retuii'iing the pivoted contactmember to mating engagement with the stopcontact, thestop contact beingl mounted on a member pivoted on the second plate resiliently pressed int `9. In an ignition device, a'tiinershaft, a

bearing therefor, a flange base on the bearf ing, a cam mountedA onntlie shaft and insulated therefrom, `termnial'plates on thebase y'and insulated therefrom, a stiff contact meinmember and the second for stop engagement f with the spring, an interlocking between the spring and second post tov prevent accidental displacement, and retiactive means for rei turning the first pivoted contact member to `uniting engagement with the llli y stop contact.

' 10. n an ignition device, a timershaft, a bearing therefor, a flange base on the bearing, a ca.inmounted on the shaft and insulated therefrom, terminal plates on the base and insulated therefrom, a stiff-contact inemo 'enga-gement against theend of the adJustment screw.`

ber pivoted on one plate, a stiff contact stop on the other plate adaptedk to abrupt stop engagement with the pivoted contact miem- `ber', a stiff intermediate member between the pivoted contact member and the cam periodically positively moving the pivoted contact Y member from mating engagement with the Stop contact, al spring on the pivoted Contact member, a recessed post on the first plate stopl ping and interlocking with the spring, the spring pressing the contact member into stop engagement with the contact stop, and an interlocking between the intermediate member land the pivoted contact member.

11. In anignition device, a timer shaft, a bearing therefor, a flange base on the bearing, a cam mounted on the shaft and insulated-therefrom,'terminal plates on the base and insulated therefrom, a movable stiff contact member on one plate, a mating stiff stop contact therefor on the other plate, a recessed postvon the first plate, a spring on thefirst contactv member stopping against and latching within the recess of the post, a recessed post on the second plate, a spring on the stop contact member stopping against and latching within the recess of the post on the second plate, and means interlocking with the first contact member slidingly engaging the cani.

l2. In anignition device, a timer shaft a cani mounted thereon,astiff movablecontactmember, a stiff stop contact member to mate therewith, stiff operating means between the cam and movable contact member latching with said` member to prevent displacement of the operating means, a post, a spring on the movable contact member with an outer end pressinof against and latching with ythe post, an otlier post and a spring on theV stop Contact memberhaving an outer end pressing against and latching with the other post. Y i

GEORGEv GADKE.

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