US1674132A

US1674132A - Ignition

Info

Publication number: US1674132A
Authority: US
Publication date: 1928-06-19
Anticipated expiration: 1945-06-19

Description

June 19, 1928. 1,674,132

c. SABIERS IGNITION TIMER Filed. June '29, 1925 A I q HEP-LE5 Eabiers Patented June 19, 1928.

PATENT OFFICE.

CHARLES SABIERS, 0F AMHERST, OHIO.

IGNITION TIMER.

Application filed June 29, 1925. Serial No. 40,329.

The present. invention relates to ignition mechanism, and more particularlyto timers for use in the ignition systems ofinternal.

combustion engines.

An objectfof the invention ;is;to prov de an improved rotor for usedn the ltimerto in? sure thecorrect .firing ofrthecharges 11117118 cylinders and prevent, misfiringdncident to the jumping. or skipping ,of-the .w per. member, and to provide a double contact device which further insures; the closing ,of the' {circuit through thetimeri v Anotherobject of the invention is. Eto provide-a rotor'with a plurality offipairs of cont-actsv withieach contact-of each pair operable .independent ly ofj the other. so that should one wiper or brush of any pair'fail to make contact, the, other wiper. orbrush 0f the pair may independently operate and ef fect the hecessary contact t A further object ,of the vent-ion is to pr i oups.) o .wiperse nd pen n r springpressed intooutward position,- and to provide means for..norma.lly retaining all but one group in retracted position.to hold I the same in reserye and to .sointerconnect. the groups as to;.rriaintainthedesired tension 'on the exposed group by the retraction of the brushes, or wipe rjs which are held in reserve. I. i

Another object'of the inyention isfto pro r vide a rotor with a hub which. the wipers or brushes are radially mounted .to effect an even wear uponthe track :or race of the shell, and to provide springs peculiarly mounted in the'hub for operation on the wipers or brushes to urge-the same outward- .ly, and which may be easily positioned and removed to enable the quick detachment of the wipers or brushes from the hub andto maintain the wipers or brushes in the hub.

A still further object of the invention is to provide a rotor embodying all of the above characteristics and which comprises but few parts peculiarly constructed and assembled, which may be economically manufractured, and which maybe applied to the timer shells now in use.

The above-and various other objects andadvantages of this invention will in part be described in and in part understood from, the following detailed description of the present preferred embodiment, the same being illustrated in the accompanying drawing, wherein:

Fig. l isa vertical axial section of a timer ,in position on the timing gear shaft, and

showing .a rotor constructed according to the present inventlonapplied thereto.

;Fig.. 2 is a transverse section taken through the same on the: line 2-2 of Fig. 1.

F ig. 3is a detail transverse section taken through the rotor; showing the covering band imposition and exposing but one group of thew ipers or brushes.

Fig. 4 is a similar view with the band removed andthe wipers or brsuhes in out ward position, and

Fig. 5 is a detailperspective view of one ofthe wipers or brushes.

Referring to the'drawing, 10 designates the forward end orwall of the engine and through which projects the usual timing gearshaft 11 and which has. on its outer face the centering projection 12 within whichis seated thetimer shell 13. The shell 13. is held in place by .a spring arm 14 carried upon a stud or post 15 projecting from the wall 10and which has on its outer end a projection16adaptedto seat in the depression at the apex 17 of the shell 13. The shell is provided with an. arm 18,by means of whichit may be-shifted to advance and retard: the timing. action. I

v The rotor comprises a hub 19 adapted to fit the shaft 11 and which is provided at its outer endivithpreferably three radial slots 20 adapted to selectively receive the transverse pin 21 carried by; the shaft 11, and over the end of the hub is adapted to fit the usual cup washer.22l1eld in place by the locking nut 23 on the outer end of the shaft 11. The hub 19 at its intermediate portion is provided with spaced walls or disks begroup being shown in the present instance, zind are mounted in independent radial slots formed in the side plates or disks of the hub and are of suiiieient length to project out- \vurdly for coritinct with the shell '13 but' which a re adapted to be con'ipressed into the huh 19 out. of the \\'2l. when desired.

lflilCll pair of wipers are mounted in the huh 19 with their seats or recesses facing outwardly or away from each other so that the seat of it brush of one air faces the corresponding seat 25 of the brush of an} adjacentpair. Between the pairs or groups of brushes 2 1- gire placed leafsp'I-in s-= 26, onebetween each roup :md Wi h the opposite ends of e'ac hspring en ga-geclyitithe sezt'ts '25 of the aJd-jicent wipers group are ui gedqot'itw'ardly independently of one another. Ea'eh spring 26 is bowed-out \var'd ly at its intermediate poi-titan and appro'ac h'e'sthe" per iph'eifly' of the-huh aiic'l the inner faces of the plates or' disks of flhe hub are notched (it 27 to'rec'eiv'e'zi; sfi'i itlbjle instrument"foi'- wi'tliditwiri'g the springs 26, the notches extendinginwmdw ate'pposit'e sides of the springs so that ac'ee'ss may he" had therebeneath for withdrawing them. The hub 19 is provided with Crossbars 28; one for ea*oh wiper 24! which exteiid s'acio'ss the outer side thereof to holdit iii" placje', and inwardly tapering hlo'oks 29f Carried by thehnb- 1*9,' one-'betWeen"eatili pair of 24 ccsupport emi -guide the in the hifli'i; only one group or-pai-r (if thewipe'r's i i is' to be used in; onetime, and in white" maintain the remaining wipers z i'jiir re traete'd ositio out ottthe way, andi-cdiiir crease the tension of the springs- 26 615136 site sides of- "the selected p'aiir' o1 wipers; a covering hand 30 is employed; 'Th'haindlgQ is preferably of s ring inetl'an dis fittedjin a depression 31 in the periphery of the hul 19 nd-is ofsuel'i' 'leng'th' thatthe ends-cr me bandslightly overlap 21nd terniiiiafte upon the' bars 28 of the selected groiipof wipers; To prevent the ends of the hand froiifsh'ift? ing and biiiding' ag inst the selected wiper 24;- the hand has st'op'lshould'e rs' 6r li'igs 32 upon its innersid'e' and sp' a'o'ed' slightly fr'oi h fl the freeend of the band; the shoiiltler's 32' engaging the bit-rs 28 to hold. th'lh'tind 30 from: circumferential ripping. The I haAd 3O bears" against the outer iids or the ije} m'zrin'iirg' wipers 24' and retains thrii fullj retrc ted and zit the ame time compresses the adja'eent ends of the springs 26' and pla'c'es the springs finder greater tension to hold the selected wi ers 24 in projecting position I Th selected Wipers 24 are" adaptedto traverse the inner wallof theshell 1 3 ind the eliih'ddd Contact Strip 33 Wlii'h are connected to the biiidiii-g: posts 34. The

the contacts 33 insure the removal of the nonconducting film which forms upon the contacts, and the provision of a plurality ofwipers- 2% insures a, good electrical conne tftion through at least one of the W-ipers. In turning, the first wiper may be utilized in removing the insulating film while the succeeding wiper 24 may form the desired contact u As the wipers 24 are mounted in true radial positions, and as they are inclependently spi'i ngpressed, they at all times follow the inner surface of the shell 13 and are effeetiwe in iim lring an efficient contact irrshells even after the usual: roller can: triers" leave failed-1: The p'ec'iii'iaf ra di'zrl mounting andspring tensi'onii'i'g of th'e i'ii'd'i-- vidusl wipers er -prevent ifiisfii iiig incident to the uneven or undulating surface" on the inner with ot-= th' shll 1%; and which ctr-uses the mi ler riziimaiws wj skip nd thus be k fit 'dwt" 0t mime witir the fixed o'or'i taiees 33 in 'the This" iidvei retdr my thus be s'fib'stitiiited in worn timer shells wiief'usussr-ioller contact has fai'led to Wast and Will -insure the evemfiringrofi the ciiafgs" ifi' the dylih de't's of: th ehgine will 'faieili'tz'rtie' the starting- 01 th: engine fina i iii'ioe tihe' fuel contiufiiptfidfi I Assoon as" gieiiis of the-wipers is worii down-,- uiubaiid 30* may" be 'ird j usteii to expose a secondgroupfird'depress theworfi grpiis. "riiis ej-ustnine may he efi ect'ed from time to time I'fiifiil an of tffie groups; of fl ers: 24; time Been" worn dawn;- en&- the prvi'siofl er'the'ssf tene sgrotips Wi'li thus meeeiielly'iiiereese insure df use retorand will r ms serve to "ioiserry' tension the springs and'ieiehs t saline siifliieiitiy', ay the reifio'v'el 6f the htihdiiih zifs shown 4- so Grist-fine 'spiiiigs' be eisily removed and substituted and so that the wip'is' 2 4 mey: iismieieiiewdr if. i-ttnr 'fdi tiiiie ee iipiising a nuba pltirali-ty' 6F of mounted raldi'a-l slidingiiio v'e'ineht the hub", springs disposed between me pairs of wipers and countered" th reto for n rm-fly urging the same iiit-tfpfo'fctfed" position, and zid'jus'tziblemeansio'r ii'ciiuiirg' an Brit dire-group of said- 'p .r q

2. Iii ar dtor iai timers, nut, a pair of clhslj afdja hefit wiper'sirio-urited for radial sliding imminent in the hub, end an indper'id'e'htspring dii'id by the hub raiemail wipes t6 iii'dependiitfy aind yieldingly' mz iiitaiii trie satire in prdfeoteii' ""o'sitioiit v 3'; In r'tor for tiinis, a rib-spread pairs of wipersmounfd fofia diaji sliding movement in the Hub,- elf's'priiig io i'rited in; the Hub between tiefh" iii of and engaging at of) {i wipe dff eazcir pair, and esp ii'g band 'oiitrfijothle upon the mi" and? having its ends spfed apart" adistance sulncient to receive therebetween a single pair of Wipers to admit free operation thereof and adapted to engage and hold retracted the remaining pairs of wipers to increase the tension of said springs.

4. In a rotor for timers, a hub, spaced pairs of radially slidable Wipers mounted in the hub arranged for individual withdrawal therefrom and provided in their outer sides with transverse seats, a leaf spring arranged between each pair of Wipers and with its free ends engaged in said seats to normally urge the wipers outwardly independently of one another, and a spring band fitting on the hub and against the outer ends of all but one pair of said Wipers to maintain the same retracted and to increase the tension of the springs on said one pair of wipers whereby said pair of wipers may independently traverse the race of a timer shell.

5. In a rotor for timers, a hub, wipers mounted for radial sliding movement in the hub and disposed in space-d apart relation circumferentially of the hub, spring means normall urging said wipers radially and outwar ly with respect to the hub, and a spring band contractible upon the hub and having its ends spaced apart a distance suflicient to receive therebetween at least one of the Wipers to permit free operation thereof and adapted to engage and hold retracted other of the wipers.

CHARLES SABIERS.