US1174717A - Self-starting internal-combustion engine. - Google Patents

Description

J. A. HEANY. SELF S TART ING INTERNAL COMBUSTION ENGINE.

APPucAnbN man APR.29, 1912.

' Patented Mar. 7, 1916.

2 SHEETS-SHEET I J. A. HE ANY. SELF STARTING INTERNAL COMBUSTION ENGINE. APPL ICA TION F ILED APR.29. 1912. F

1,174,717. Patented Mar. 1916.

2 SHEETS-SHEET 2.

e a drawings, d signates the usual Q workingLpistons, b the working cylinders, c 85; I

:roxm ALLEN HEANY, OF WASHINGTON, DISTRICT OF COLUMBIA.

' SELF-STARTING- INTERNAL-COMBUSTION ENGINE.

L To dll'whom it concern:

' Be it known that I, JOHN ALLEN HEANY,

I acitizenofthe United States, and aresident y of Washingtomin the District of Columbia, have invented certain new and useful Improvements in Self-Starting Internal-Combastion Engines, of which the following is akfull andclear specification, reference being had to the accompanyingdrawings, in

which Figure 1 is a side elevation brokenaway;

Figw2iis a vertical section; and Fig. 3 is a i a viewaofthe preferred form of means for cona 4" trollingthe-moveme'nt of the valves shown Theobject of this invention is to so conin Fig.1,

" .struct the starting mechanism that it shall beabuilt into the engine'pro'per, thereby doingyawaywithv the unsighthness, unreliability, lack of durabilitmand liability to derangement which are necessarily incident to fithoselstarting mechanisms which aremere attachments to-yan engine; a

i i a I have illustratedmy invention as applied 2 cle twin-cylinderengine) but it will be untofajwelllknown type of engine (a four cyderstood that the invention is applicable, with modifications as'to detalls, to other a typesof engines typeflof self-starting en ine covered by my h at a point below the check valve 70. The- Thisi'nventlon has special relation to the copendingapplication, erial No. 68 8,634

the pitm'en connecting the pistons to the maincrank-shaft (hall constructed in substantially the usual manner. Each plston 1s extended'toward the crank-shaft and pro-' videdwith asupplemental piston-e largerin diameter than the main piston and workingin a supplementalcylinder 7 formed as a continuation, of the main cylinder.

The stroke of the pistons are so adjusted upper extremity of its stroke there is a clearmice 9 }betweenthe piston "and the upper "end-or head of thelsupplemental cylinder, end communicating with .tl'llS clearance spaceisa POIt h. Connecting all of these ports to an airstorage tank 5 1s a p1pe 7', and controlling each port 1s an outwardly opening check" valve 70,3normally pressed to itsseat by a spring ,Zan'd having aste'm m which depends into the crank casing n of Specification of Letters Patent.

j that when the ppl n P is the a Patented Mar. *7, 1916;

Application filed. April 29, 191?. Serial No. 693,890.

' is adapted to bear either upon the face of' the cam 71 or the cylindrical face 9 of a sleeve carrying said cam. The cam sleeve-g 1s afiixed to a cam shaft whichis adapted:

to be rotated by gears s or other suitable,

means from the crank shaft of the engine:

This camshaft r .is adapted to be shifted endwisely by any suitablemechanism, pref-= erably by the means shown, which consists I of a gear t affixed to the camshaft and provided with annular teeth, a gear a meshing therewith and affixed to a short shaft ex tending out through the crank casing and provided with another gear o. Meshing with the gear '0 is a rack u carried byjarodm which may be adjusted back and forth by any suitable means, preferably by the lever and segment device shown in Fig. 3. I

Attached to the camsleeve gis an additional pair of cams y and a which are sepa rated from each other by a suitable space.

Adapted to bear on the annular surface of I the sleeve between these two cams or upon either of the cams, according to the adjust-y mentof the cam shaft, is an antifriction ball at married at the lower end of a stemb whosupper end is atlachedto' a check valve i a which is normally seated by means of a coil sprlng d'in a valve chamber 6'. Above this valve 0' the valve chamber 8' is connected by a lateral port f to the engine port"- 7 ports with e pressure tank L At a suitable point in the ipe jis ar ranged a check valve '1, WhlG jopens m g" and a} There is provided for each cylinder the pipe 7' connects all, fourfof the engine,

wardly with-respect ,to the air tank, being held to its a seat vided with a rod la'by which it may be tmanually forced open andheld open ag i t tank pressure.

I y tank pressure and byia suitable coil spring if. This valve prow While the engine is running on its own power, the cam shaft is adjustedto theposition shown 'in Fig.1, in which position the balls 0 and atreston the cylindrical S111: face of the cam sleeve so that the cams will tons serve to pmnpair intothe tanki and whenthe maxlmum pressure is reachedthe operation isas'. follows Upon the downward -pipe, g past the'valve a andin through the i port h, the valve Jcf remaining closed; ifUpon.

the fupstroke the air thus dravv' ill forcedroutpast the'valveslc n p t pa v l and into or valve "'73 "and the valves 'lc-oper ina nnenv of automatic, check 1 elves pumping operation ceases as --jsoon as the pressurein the tank'is brought np to the "de gree' determined upon in "building" the en ginefthis degree ofpiessure beihg dependcut on the capacity of" the supplementalcyl- 1g in the.

ranged for at-the upperrendsof thesiipple mental cylinders, As soon I asfthe ma-xirn'nm pressure [is obtained tend "the pumping into f pompres'sed-to tfan pressure and then" expumping operation, the cam shaft may be adjustedto bring th'ecams' 3 into alinernent with the stems of the valves cf so thatthese valves shall be positively opened and held "open duringnthe" suction strokes fof the pistonsli: I '1. w if: JW-hen it is desired to start theiengine tank, the voperator simply presses his foot "on-the stem kand opens the valve i; haw A g previously-emitted the cam shaft to bring the cams p and z into operation. Thisshift 1 tjwo -of'the mhin check valves-7c the cams be- "gysd arranged that they; willopen the vanes, of those two supplemental ijpistons hich'ha'ppen to be at the upper ends of their stroke; ready for a' orking or down ke. Thegcarns' QFare'so placed on, the

l fisto'ns are at thebottomsoftheir o ascend to expel-the airin othe atmosphere. "ltwvill thatwvhile one pair [of supmders .is takingjalr from the n e p U therFpairis ascending and {ex-1 'Q1lin'g. =the} fair in the cylinders out past the mpviouslyopened valve a, and this opera.-

hn contmuesfuntil the engine ,is working ning'in thismanner, the supplemental pis- "ters Patent 1-..pumpinga'ction ceases automatically lhis Lv, ,1.dIncombination Wit h s "multipleicylinstroke- 0f flash pair} of supplemental pistons 'ai'r,-Will be drawn in through the silencer,

tank, the

theseivalves at. The;

inders' and the}amount of olearhnfce, g 3 1:

-. thei:tank ceases,' then the air entrapped in.v Leaohfone of the supplemental cylinders at, every stroke of its ist'on. will he v alternately 7 v pended, to atmospheric pressure; (thus pro- 7 7 vidingfor anidealeus'hioni'n effect in .jeaoh A supplemental cylinder. If esired,"in;.this

thrqu'gh the medium-ofthe pressure in the mgjofwthecams serves to open and hold open aft that-thissumc endvvise movement: of, {the cam shaft opens and holds open the 'tw'o/ of those-cylinders wherein 'theusupz-" I Q ii iderj its own power afterf which the opera- I tor releases valve i and allows the same to closeand then shiftsthecani Shaft to new trail position. A I

I Having thusdescribed' zny invention what 'I claim as new and desire to secure Letden explosive engine embodying supplemental cylinders and supplemental pistons connected to the Work-cylinders and pistons,

and operated in unison: therewith, a oom- Mbmed in-let and outlet port entering one end of each s'uppleine ntal f;cylinder ji -a pair of check valves-controlling,eachlof'ftheseports,

' means operatedhy the e pnede e nefor opening [a pump or intoa'starterffor 'the'engine 3. :In combination {with" a; multiple." cylin der: explqsiveengin'e having air-compressing; 1 means associated" yvithieach fpylinden'; of i an airreservoir, afchec va 1vebpe ing toward. said reservoirand' controlling"communion-Q-e1' I tion between the reservoir and-'vtheapom Pl'S- opening meanstqcm rt=thei"apparatus into edftirnes', means 'sor, a second check, valve opening'jtoward the compressorand controlling communicaerated bythe engineifor opening and cl0s-' I mgthcs'e 'valvesat predetermined times, and

- tion between the compressor and the atinosmeans for shifting itheval've-openi'ng means tolconvertlthe apparatus into a a starter for theengineL 7 pump or into In combination with a inultiple cylin der eXplpsive-engine havingair-compres'sing meansassociated-"with each cylinder, of any an" reseinvng v a check valve opemng toward v tion betweenthe reservoirandthe ,con1pres;. sol-ya second check valve opening toward l said reservoir, and controlling communicathe compressor and "controlling. communicm' 'vtionbetweenithe compressor and the atmosphone, a rotatingrshaltassociated .with said check'valves operatedby the engine, cam members on said shaft adjacentthe valve stelns, said camn einbers' adapted to engage the valve stems upon thelbngitudinal move ment of said shaftitor opening andclosing said valves at predetermined times, and

means for shifting the valve-operating shaft for converting the apparatus into a pump or into a starter for the engine. 5; In combination with a multiple cylinder explosive-engine having air-compressing means associated with each cylinder, of an air 1 reservoir, 93 check valve opening toward said engaged by a cam member ca-rrieilby a ro-' tating. shaft operated by the engine for opening and closing these valves at predlet Q Valve-opening means to convert the apparatermined times, and means for shiftin tus into a'p'ump or into a starter for the engine.-

In testimony whereof I hereunto aflixmy signature in the presence of two witnesses.

Witnesses:

FRED. B. MCLAREN, CHARLES D. DAVIS.

Jo N ALLEN HEANY

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