US1181252A - Internal-combustion engine. - Google Patents

Description

A L. RIK E R; INTERNAL COMBUSTION ENGINE.

APPLICATION. FILED MAY 29, I905.

Patented May 2,1916.

2 SHEETS-SHEET I Inventor: flgzdrewlflilser A L. BIKER. INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 29, 1905- m 3 3 e v P n wflw MIDREW' L. BIKER, F BBEDGEPO BI'I GONNEGTICUT, ASSIGNOR TO THE LCCOMOIBILE fifilffTEZQ-JQ'Y AIVEERIGA, OF NEW YQBK, H. Y., A CORJPGRATION OF VEST VIRGINIA.

IN'iERNAL-GfiMBUSTIDN ENGINE.

To eZZ whom it may concern Be it lniownthat 1, ANDREW L. Bums, a

citizen of the United States, residing at see. 9e willhemore particularly pointed oiit in the appended claims.

lnthe drawin "s. -Fi 'ure 1 is a side ele vetion of an automobile engine embodying on form of my invention; Fig. 2 is nsecail view of the same taken on the line in 1; Fig; 3 is side elevation of :1 portion of the cam shaft, the remainder rig broken away; Fig. 4 is a section on line -l--fe, in Fig. 3 and Fig. 5 is a de- 1 of the controlling lever.

in the drawings I have shown in Fig. I e four-cylinder automobile internal coinnnstion engine. Eechcylinder is provided with an appropriate sparking or ignition timing device a, herein a. make and break rhing device, actuation of which is efcted by a vertically i'eoiproceted cam rod which passes through the crankshaft sing C and carries at its lower end. the cam roller c engaging with the igniter cum. 0? which is preferably formed integrally with andnpon the cam shaft 3. T e letter extends lengthwise the engine frame and is t ed. froin, the main crankshaft as by (D oer is also provided Wijh en appris te'admission valve e (Fig. 2) and exsu valve ,f. The former is raised and. Mei-ed for admission and cutoff .nf the ;,l at the propertinees by the vertically "nesting valve rod g carrying the cam in is engaging with a com 2". elsoformed "on the can! shaft e:. The exhaust valve f ctnntethby the valve rod y" (Fig-Blown f r/end cam Z on the exhenst cam shaft Specification of Letters Eatent.

Application filed May 28, 1395. Serial Nev/262,758. I

exhaust and ignition, oc'cu specific embodiment thereof, While its' ringinclicatecl at one end. Efiilh I imenteeiiiaye, 191s.

on, .the letter, being arranged lengthwise. then engine on the opposite side thereof from-the; coin shaft e but also vyithin the casing (11: The can; shaft 0 therefore has four ignition cams. and four admission, cams and the jcamwieon shaft "m has four exhaust cams, one fort each cylinder, thesnme. being arranged so, that the several events, naniely,-edmission,

in each cylinders at the appropriate'tinies. i

Whereun internal combustion engine is onerated {it a variable speed as Where used to propel an automobile it is necessaryito vary the "time of ignition relzitive to the; other events of the engine stroke to corief- 702 spond with therequired variations in speed. r lllher'i an increased speed isrequinednthetime of ignition ordinarily mlvanced 't0... occur earlier in the engine stroke, whilegifi a slower speed sought the time of ignition is retarded. In order to permit this regu'a lation of the ignition simultaneously foi all the cylinders of the engine in a simple md eiieetive Way and without veriation ofthe.

time of admission, I elongate the ignition; and admission cams giving the effective face or edge n of each ignition cam a spiral form so to have s. constantly advancing relation lengthwise the cam shaft and make the) entire cai'n shaft slideble lengthwise imits hearings. Sliding movement of the cam; shaft 6' is controlled by the yoke 0 ,which nmy he moved by the lever p 'locatecl outs side the ca ing and ettachedto the rod q, the letter in turn secured to therocking arm 1 ihe rm '2 is secured to the ver; ticel shafts, the latter having at its bottom the beveled gear a, meshing with the gear n, the letter in turn being attached to the cen trel red o within the steering post w, whioh formed part of the steering apparatus of the automohile upon which the engine here in described is supposed to be mounted The steering post we carries at its heedthe steering wheel to, to" which is stetionarilyse- 109 cured the'notched segment m. I The teeth of the segment are engaged by and act to hold in position the pin g secured to the spring lever s,-the latter being attached to the end of tie cei'itmi mil 0. Thus during the 5 *5 vehicle the operator wheni need. and desiring to advance or ever retard the ignition can withdraw the pin 3/ to any newpo'sition desired 1 along the segment, the movement of the lever resulting in the partial rotation of the central rod '1) and the consequent shifting of the cam shaft in its bearings. This results in an advancement or retardation of the time of ignition according as the cam shaft is shifted to the right or the left as viewed in Fig. 1, for the spiral edge not the cam will meet the cam roller at an earlier or later period in the rotation of the cam shaft, according to the position lengthwise the cam at which the roller engages the same.

Details of the cam shaft as I have here constructed it are shown more particularly in Figs. 3 and s. The ignition and admission cams having elongated faces are formed preferably in a single piece with the cam shaft 6. The effective edge a of each ignition cam is spirale d to give the required timing change of the ignition on shifting of the shaft while the elements of the admission cam are parallel to the axis of the cam shaft in order to produceno timing-change in the admission when the shaft is shifted. By the construction described the ignition cam shaft and the admission cam shaft are consolidated into a single shaft and this together with the cams and cam rollers as well as the exhaust cam shaft are contained within the oil tight engine casing (l and may therefore be run in the oil which it is customary to place within such casing.

lVhile I have herein shown one specific embodiment of my invention for purpose of illustrating the same, it is to be understood that it is in no wise limited to the specific details or the particular application thereof herein disclosed, but that many modifications and wide departure from the details described may be permitted without departi g from the spirit thereof.

, member, and a bevel gear Claims:

l. The combination in an automobile of an internal combustion engine having an oil tight casing, an ignition cam shaft mounted for longitudinal movement within said casing, a member engaging said cam shaft and extending outside of said casing, a steering post, an operatin rod passing through said steering post and provided at its lower end with a bevel gear, a shaft connected to said meshing with said first mentioned bevel gear, whereby the turning of said steering post rod moves said cam shaft and varies the ignition.

2. In an automobile, the combination of an internal combustion engine having fuel supply means, ignition means an oil tight casing having a cam shaft mounted for longitudinal and rotative movement therein and provided with ignition means intermediate said cams and said fuel and ignition means for operating the same upon rotation of said shaft, and admission cams of an actuator having engagement with said shaft and extending outside said casing, a steering post, and means connected therewithfor operating said actuator to slide said. cam shaft for varying or controlling the timing of the ignition, but without affecting variation in admission, said ignition cams having spiral. elements and said admission cams parallel elements for that purpose. 1

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ANDREW L1. antes,

, timing of the Witnesses H U WM. S. Tptiln, J12, Rena hLfiYOUNG.

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