US1065001A - Valve-actuating means for internal-combustion engines. - Google Patents

Description

J. SGHEITLER.

VALVE AGTUATING MEANS FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAE. a, 1912.

1,065,001,; Patented June 17, 1913.

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witnesses. Inventor,

Joseph S'cizeifler, 6g

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N 'J. SOHEITLER. V VALVE AGTUATING MEANS FOR INTERNAL COMBUSTION ENGINES.

APPLIGATION I-'ILED MAR. 5I 1912.

1,065,001 Patented June 17, 1913.

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.Zuitrlzsses. Inventor,

Joseph .Schozitlen'bzy Attorney.

rosnrn'sonsrrnnn, or wA'rnnLoo, IOWA.

'VALVE-AGTUATING MEANS FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented June 1?, 1913.

Application filed March 5,1912. Serial No. 661,700.

To all whom it may concern:

Be 1t known that I, Josnrn Sor1EIrLEn, a

citizen of the United States of America, and

valve-actuating meansfor internal-co1nbustion engines, and the object of my improvement is to provide springl'ess means foropening and closing theadmissionand exhaust-ports of such engines regularly and automatically, such means being simple, effect'ive, and quickly demountable for cleaning or repairs. This object I have-accomplished by the means which are hereinafter described and claimed, and whichare illus trated in the 'accompanying drawings, in which: 7

.Figure l'is a right-hand side elevation of a four-cylinder internal combustion engine equipped with my improved valve-regulatmg and operating means. Fig. 2 is a front elevation of said engine and valve-actuating means, with parts broken away. Fig. 3 is an enlarged detail front elevation of the cam-wheel and its driven diskyin the position wherein the edge studs of the disk are about to traverse the cross-cam-groove of the wheel. Fig. 4: is-a similar view of said cam-wheel and disk, showin -the same in their positions assumed at the end of the traversing of the cross-cam-groove by a stud of said disk. Fig. 5 is a development upon a plane surface'of the cam-groove carrying face of said cam-wheel. Fig. 6 is a perspective detai'l;--with parts broken away, of the hollow valve-way shaft. Fig. 7 is a righthand side elevation, enlarged, of the boxing for the said valve-way shaft. Fig. Bis a left.

hand side elevation of said boxing. Fig 9 is an enlarged transverse section of said boxing, and

its contained rotary valve-way shaft, taken on i a line A'B .of Fig. 7, looking in the direction of the arrow, and showing the position of the valve-way in said shaft for the forstroke-of: the piston thereof. Fig, 10' is a transverse section of the said parts taken on the line C D of ,Fig. 7, the valve-Way of the shaft for-the second cylinder being in its proper position at the time when the parts forth'e' first cyiinder 'are as shown in Fig. 9. Figs.- 11 and 12'are like sections on the lines E F and GH respectively of Fig. 7,

but show ng the proper positions of the said cylinders pivoted to the cranks of a common crank-shaft, in a suitable order as shown, so that the powr strokes thereof will succeed each other in the succession from the cylinders 40, 39, 37 and '38,but any other order of succession may be adopted when desired, and the valve-ways may then be rearranged accordingly without departing from the scope of my invention.

In order to do away with spring-actuated puppet-valves and the like, I have. adopted the following described means to govern the admissionand exliaust-ports of the engine: Upon the top of the water jacket 28 of the combustion-chambers of the four en ine cylinders mentioned above, I mount a re atively long oblong boxing 17 longitudinally, which may be integral with said water j'acket and cyl- .inders, or may be separate and secured thereon. The said boxing 17 is hollow to contain water,.and ports 27 afford a communication between the interior of said boxing and the interspaces of-the water-jacket 28 of the cylinders. A conduit 35'leads from the interior of said boxing to a radiator (not shown). Within said boxing is supported in its interspace and spaced apart from the walls thereof, a cylindrical hollow body 58 integrally connected therewith, and extending longitudinally therethrough. The interior cylindric hollow of said body 58 is adapted to be the. seat in which a rotatable hollow cylindrical shaft 1 is mounted removably. "The rear end of saidshaft l is exteriorly threaded to receive a retaining nut 12, and itsforward projecting end has an integral collar 8 to act as a stop for a disk orringt) which is removably mounted thereon over a key 7' to prevent rotation of the ring relative to the shaft. The ring 9 is secured on said shaft by means of a r taming-nut 11. The ring 9 has four eqnaliy spaced apart short studs 10 radially projected from its circumferentli periphery which are adapted to extend movably within a cam groove 3130--32 best shown in Fig.'

5 as developed on a plane surface, of a concave-edged cam-wheel 29 fixed on a rotary shaft 42 set at right angles to said shaft 1.

The ends of the shaft 42 are mounted in hearings on brackets 41, which latter depend from the boxing 17 over the forward face of the waterj acket 28. Upon the righthand end of the shaft 42 is secured a sprocket-wheel 43 engaged operatively by a chain 44 driven by a sprocket-wheel 45 mounted on a parallel shaft 54 below. Secured on the same shaft 54 is a bevel-gear 46in mesh with a bevel-gear 47 secured on the forward part of the engine crank-shaft 49. A small pulley fixed on said crankshaft at 48 drives a belt 50 which transmits rotation to another pulley 52 rotatably mounted on a fixed shaft 51 projected for-'- wardly from the bracket 41. Secured to and driven by said pulley 52 is a fan-wheel 53 anterior to said engine of the usual type.

crank shaft, thus rotating the cam-wheel 29 "twice during one rotation of said crankshaft. It will be observed that the concave faced cam-wheel 29 has its concave face thus arranged to pass over the circumference of the .ring 9 inrotating in the direction of the arrows in Figs. 3 and 4. The cam-groove 1 on the concave face of said wheel 29 has its middle portion 30 crossed obliquely across the wheel, while the ends of the groove at 31 and 32. end in the excised parts 33 and 34 in the angular edges of the wheel to permit of the entry and exit of the studs 10 on said disk or ring 9 of the hollow shaft '1. Since the obliquely-crossed portion 30 of said cam-groove occupies'but a portion or fraction of the extent of the circumference of the cam-wheel 29, it is obvious that when one of the studs 10 of the ring 9 enters and is caused to traverse said groove by reason of the rotation of the cam-wheel inthe direction of the arrow, the stud must traverse in its induced movement with said ring said oblique part ofithe groove, and only while so traversing such oblique part of the groove can it act in rotating the ring 9 one quarter of one rotation of the latter. At other times the next stud 10 which enters the end 31' of the groove remains quiescent therein until it is shifted for another quarter revolution by the action of the transverse part of; the groove. The ring 9 and shaft 1 are thus induced to receive intermittent actuationsby said cam-wheels to produce succesignition at the beginning of the sive uarter rotations thereof at equal intervals or the purpose to be now described.

'The hollow shaft 1 is subdivided into as many 'portions longitudinally as there are cylinders in the engine to be served, in this example, four. The shaft therefore, is at a part of eachof these subdivisions provided with a depressed portion in the shape of a segment of a cylinder with the chordal plane a bounding wall, rendering the wall imperforate at those parts, all the depressions,

,or ways 2, 3, 4 and-5 being of the same dimensions, but varied in their locations about the circumference of said shaft so as to be each a one quarter turn apart from the preceding or succeeding one. Annular grooves between the said depressions or ways in the outer wall of the shaft 1, as also at either end thereof, are made seats for the split-rings 6, which latter thus render the contacts tight and gas proof at those places between said shaft and the seat-cylinder 58, preventing any transmission of gases or leakage past said places.

movement of the crank-shaft of the engine} by the rotation of the shaft 1 a one quarter turn to the left. The rotation of the camdriven ring 9 this quarter turn is effected at the moment while the crank on the pistonrod 57 of the cylinder 40 passes from a point about five degrees on one side of one dead-center to another point in its rotation about five degrees on the other side of the dead-center, in other words through a space of about ten degrees and just preceding the powerstroke. The ring and shaft 1 with its way 5 has been therefore shifted a quarter turn from its preceding position, wherein said way 5 had furnished a means of communication betweenthe carbureter port 13 and the inlet-port 23 in the-preceding indraft stroke of the piston in said cylinder 40. .The next quarter turn of the shaft 1 occurs when the crank is passing through the opposite dead center, and thus in succession, the shaft 1 is rotated by quarter turns at equal intervalsto open or close. the communications, by means of the way 5, between the carburetorport 13 and the inlet-port 23, and between the inlet-port 23 and the exhaust-port '18 for the cylinder 40. The Figs. 9 to 12 inelusive show the simultaneous ositions of "the ways 5,4,3 and? of said s aft 1, rela- ;tive to the carbureter-, inlet and exhaustports of the respective cylinders 4L0, 39, 38 and. 37. Since the pistons of the .difl'erent cylinders move in the predetermined succession, the ways'placed in the shaft 1 are located appropriately to effect the proper actions relative thereto as above described. Since the shaft 1 is hollo'w, air driven by the fan 53 may pass through its interior 1 hollow for cooling purposes. The shaft 1 be applied to any ordinary type of interna Having described my invention, what I may be readily removed from its seat by merely removing its rear retaining-nut 12,

' for cleaningor repairs.

It will be observed that this device ma combustion engine, with but little if any, readjustment thereof, and that the mechanism, while-.sim 1e, works automatically in the governing o the engine-ports.

claim as new, and desire to secure by Letters Patient, is:

1. The combination with the rotary valve of an internal-combustion engine, of means adapted to intermittently rotate the valve,

comprising a rotary cam-wheel having a circumferentlal groove beginning at or near one side, passing therealon and then crossobhquely, then the rotary valve and having pins on its cir- 'cumferential edge adapted toproject in succession into said cam-groove and be actuated by the'walls thereof in rotation tor0- tate the disk intermittently with abrupt beginnings and cessations of motionwhile either pin is entering, traversing and leaving the obl que part only ofthe groove, the disk -.,remainmg quiescent while a pin is traversing theother parts ,of thegroove,'and means for rotatingsaid cam wheel adapted to cause it to rotate" said disk one-half rotation during one rotation of the crank-shaft" of the en inc.

2. T e combinationzwi-thv'the radiative of an internal-combustion engine, of means adapted to rotate the valve v' vith, ..,alternate partial rotations and :ces'sat ons "of movement, begun and ended'abruptly, comprising a rotary cam-wheel'withconcaved ci'rqeu'm- -ferent1a1 edge, and having in said' sage a cam-groove beginning. atone side, then car ried straight along and-adjacent to that side for a distance, thenicarried abruptly and' obliquely acrossthe edge to the otherside,

then carried abruptly and-intoa straight 'course alongand adjacent to the other side 30 to end at a ointopposite the oint of ending of the o lique part thereo a bodyco- I axially, mounted on said rotary valve andm succession to having four equallyrspaced radial ins proijecting from its circumferential 'e ge',i said, pins being adapted to enter said cam; groove. 1

ermit the cam-wheel to rotate the said 100 y and valve only 'whilea stud'i's-traversing the oblique "part of the cam-groove, and operative connections be-1 tween said cam-wheel and the crank shaft of the engine adapted to rotate the-cain-wheel twice during each rotation Oftthe crankshaft to cause a one-half'rotation' to said 3 body and rotary valveduringjone-rotation of the crank-shaft, and actuate said valve onlyduring the passage of. the crank on said shaft through itsdead-centers, I

Signed atWaterl Iowa, this 2nd day of March, 1912.

Witnesses: W. H. BRUNN,

Geo. C. Knmmmr.

Copies of this patent may be obtained for flve cents each, by addressing the Commissioner 01' Pat ents,

' Y Washington, D. 0."

JOSEPH scHEIrLnn;

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