US1176418A - Valve for internal-combustion engines. - Google Patents

Description

W. McG. YOUNG & R. S. SMART.

IALVE FOR INTERNAL COMBUSTION ENGINES. APPUCATION FILED ocr.15. 19m. 1 ,176A18, Patented Mar. 21, 1916.

' 3 SHEETS-SHEET v iiiiii! I unlllnummiif H WITNESEEE w.- M .YU u 5 INVENTUHS G' i H.5.5MAHT PEH THE COLUMBIA PLANOGRAPH co., WASHINGTON, D- c.

W. McG. YOUNG & R. 8. SMART. VALVE FOR INTERNAL COMBUS'HON ENGINES.

' APPLICATION FILED OCT. 15, 1910.

3 SHEETS-SHEET 2.

Fl a. 5. v W'IYTNEEEEE INENTEIFIE W.|"I.YEH.JN|5L N FLELEMAFIT PH c0.. WASHINGTON D c W. M06. YOUNG & R. 8. SMART. I VALVE FOR INTERNAL COMBUSTION ENGINES.

1,176,418. Patented Mar. 21,1916.

- 3 SHEETSSHEET 3.

APPLICATION FILED OCT. I5. 1910.

'WITNE-ETIEES UNITED STATES PATENT orrron WILLIAM MCGEE YOUNG AND RU SSEL. SUTHERLANID SMART, OF OTTAWA, ONTARIO,

' CANADA.

VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Mar. 21, 1916.

Applicationfiled (lctober 15, 1910. Serial No. 587,329.

To all whom it may concern Be it known that we, WILLIAM MoGEE YOUNG and RUssrL SUTHERLAND SMART, both of the city of Ottawa. in the Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Valves for Internal-Combustion Engines, of which the following is a specification.

Our invention relates to improvements in valves for internal combustion engines and the like. and the obiects of our invention are to provide a simple and effective form of valve mechanism operable without noise and a minimum amount of friction and which may be readily lubricated and water cooled to avoid excessive heating.

, Further objects are to enable both ports to be controlled by a single valve member, whereby, the number of rotating parts will be reduced and the valve mechanism very much simplified.

Further objects. are to provide means for securing a quick cut-ofi' for both ports.

Further. objects still are to prevent leakage of the valve joint between the valve member and the engine cylinder.

In its construction the invention includes a tubular valve member or members mounted on the interior of the engine cylinder and adapted to be turned to different positions to control the exhaust and inlet ports. In one form of the invention, a single valve member is arranged to control both ports the movement of the member in one direction being adapted to open one port, while the movement in the opposite direction opens the other port. In this form of the invention, means are provided for imparting a reciprocativemovement to the valve in opposite directions, with a quick return motion. Separate valve members may be provided for eachof the ports if desired. In order to minimize space, a portion of the valve member, or one of the valve members isarranged to occupy a cylindrical recess in the end of the cylinder, which also forms a compression space for the explosive mixture. -Leakage between the valve member and the cylinder may be conveniently controlled by means of a ring'located in a groove formed in the edge of the valve member and normally spring pressed outwardly.

.These and other details of the invention are more fully set forth and described in dethe connection tail in the accompanying specification and drawings.

In the drawings: Figure 1 is a vertical sectlonthrough the end of an engine cylinder embodying the present invention. Fig. 2 1s a plan view of the end of the cylinder. Fig. 3 1s a perspective view showing the operative mechanism for the valve, said view being partially in section. Fig. 4 is a section on the line 22, Fig. 1. Fig. 5 is a section on the line 3-3, Fig. 1. Fig. 6 is a sectional new of the end of the cylinder embodying an alternative form of the present invention. Fig. 7 is a section on the line 4-4, Fig. 6. Fig. 8 is a section on the line 55, Fig. 6. Fig. 9 is an enlarged sectional detail through between the valve member controlling the exhaust port and the engine cylinder. Fig. 10 is a plan view of the top of the cylinder of the form shown in Fig. 6. Fig. 11- is'an enlarged detail view showing the valve packing.

In the drawings like characters of reference indicate corresponding parts in each figure.

Referring first to the embodiment of the lnvention illustrated in Figs. 1 to 5, G represents a cylinder of the usual water cooled type. a and 64 represent the exhaust ports which open near the end of the cylinder and arecircumfercntially and diametrically opposite to each other. 6 and Z) represent the inlet ports which are located in the end of the cylinder and open into a cylindrical recess adapted to form a compression space at the end of the cylinder. H represents the valve member whichis tubular in form and fitting'closely to the inside of the cylinder, the latter conveniently having a seat 71, on which the valve is mounted. l/Vhere a seat such as this is employed, it would facilitate theintroduction of the valve member if the head G of the cylinder was formed separately of the body portion thereof. It will be seen that the valve member H is formed with an inner-section h of larger diameter and controlling the exhaust ports, and an outer-section k of less diameter fitting closely to the cylindrical recess 6 and controlling the inlet ports. Apertures are formed in the valve member in such a manner that when the member is turned in one direction it will open the inlet ports, and when turned in the opposite direction it will open the exhaust ports. Thus diametrically opposite apertures cr slrts 'h and h are provided in the section If. adapted in a certain position to register with the inlet'ports. The section h is also provided with apertures or slots 72? and 72 adapted in a given pcsitien to register with the exhaust ports a and a. When the valve member is in closed position, the ports 71 and it lie on the opposite side with respect to the exhaust ports to that on which the apertures h and 72. lie with re spect to the inlet ports. The valve member is substantially c axial with the cylinder and being near the periphery thereof may be readily lubricated by any well known means and will obtain the benefit of the water cooling of the cylinder. To prevent leakage between the valve mem er and its seat, a ring If may be provided extending in grooves 7L and if in the valve member and cylinder respecti elv, and normally spring pressed outwardly by suitable spring It. The valve member may have a recipr cative turning movement imparted thereto by any suitable mechanism, preferably of such a character as to impart a quick return in tion which will effect a quick cut-off of both exhaust and inlet p rts. In the embodiment illustrated. a spindle I is connected to the val e mem er and extends through the end of the cylinder, a le er i being provided on the end of the spindle, and held in n rmal positi n by means of tension springs 71 and 2' which are connected thereto and diverge therefrom to opposite sides where they are connected to the t n of the cylinder. the tendency of said springs being to ouicklv return the leer to normal p sition when moved therefrom. The lever is ada ted to be mo ed a ternately to opposite sides and 7 then released. by mea s of a reciprrcative ta et member J. This tappet member which reciprocates in guides 7' on the t n of I the cylinder. ca ries three tappet nrei ctions 7' 7' and j, the center one of which is adapted in normal closed position of the val e member. to engage cne side of the le er i. on reci rocation of the member, the pro ecti n 7' is ada ted to engage the end of the le er 1' and swing the lever to one side and ult matelv release it. permitting it t swing ack under t e act n of the spring. The proiecti ns 7" and 7' will prevent oscillat on of the lever after return t n rmal position. for bv the time the projection 7' moves sufficiently t release the end f the le e either the projecti n 7" or 7' will be in position nea the center of the le er and stop it immediately t comes to its central normal position. For thispurpose. anv of the well known val e mechanisms fer fear-cycle explosive engines might be used. The member J mav reciprocate in any suitable way from the engine shaft. By way of illustration, we have. shown a simple mechanism for performing this function comprising a bell-' the main engine cylinder, as for example by means of a subsidiary crank shaft j carrying the cam and rotated by a chain j and. sprockets 7' and 7' on'the auxiliary and main shaft respectively. j r In the operation of the mechanism,when the member J is reciprocated in one direction. it

member H until the apertures it and k register with the inlet pcrts b and b-,'permitting the inflow of the motive fluid. On

' will swing the lever i carrying the valve 7 the motion being continued. the tappet projection' 7' will pass the end of the lever 2', which under action of the spring will return quickly to normal position, shutting off the inlet port. Themixture will then be compressed and ignited, during which-time the V rec'procative member will return tonormal position and the projection 7' will engage the opposite side of the lever z to that which it previously engaged. The m tion being further continued. the lever a" will be swung to the oppos'te side, turning the member H in the opposite direction, and bring the aperturesh and oh into registration with the exhaust ports a and a,.permitting exhaust of the motive fluid. This action will be repeated during the operation of'the engine.

In the alternative form of the invention shown in Figs. 6 to 10, A represents a cylinder of usual construction,-preferably havtrated having the usual water cooling means. The inlet port in the embodiment illustrated is formed on the head of the cylinder and opens into a cylindrical recess in the head by suitable mechan'sm. In this embodiment separate valve members are provided for each of the ports. the exhaust ports being controlled by acylindrical valve member or ring C mountedon a seat 14 formed on the interior of thecylinder; In the embodiment illustrated, the upper edge of the valve member C is adapted to abut the inner surface of the head B. Means are provided extending across the j int between the valve member and the cylinder to prevent passage of motive fluid ;v the means illustrated compris ing a removable head B, both cyl nder proper and the head in the embodiment illusing rings 15 and 16 located in grooves 17 and 18 formed in the edges of the valve member, said rings being normally forced outwardly by springs 19 and 20. v The effectiveness of the r'ngs may be further increased by the provision of a groove 21 on the seat 14 to receive the ring 15, and a groove 22 formed on the under surface of the head of the cylinder. The valve member C is provided on its periphery with ports 23 and 24adapted to reg'ster at a determined point in the movement of the member with the exhaust ports 12 and 18. the movement of the valve member being effected by any suitable means, and being oscillatory or reciprocatory as desired. In the embodiment illustrated a stem 25 is shown extending through the end of the cylinder and coaxial therewith and connected to a spider 26 on the valve member, the stem 25 beng turned by suitable means, as by a chain 27 and'sprccket 28 on the stem. The inlet port is adapted to be controlled through a tubular cylindrical valve member 1) fitting the cylindrical recess 11 and formed at one point with a slot 27 adapted to register at a given point with the inlet port to perm't the passage of the motive fluid into the cylinder. This valve member may be actuated in any suitable way. As illustrated, a sleeve 28 is provided on the valve member encircling the stem 25 and adapted to be turned by means of a sprocket 29 and chain 30. It is apparent, however, that any other suitable mechanism might be provided for actuating the valve member.

As many changes could be made in the above construction, and many, apparently widely difierent embodiments of our invention within the scope of the claims constructed without departing from the sp rit or scope thereof, it is intended that all matter contained in the accompanying specifications and drawings shall be interpreted as illustrative and not in a l'miting sense.

lVhat we claim as our invention is:

1. An engine sylinder having inlet and exhaust ports located in dilferent planes at different distances from the center and rigidly connected tubular valve means controlling both of said ports, said means each being located adjacent the same end of the cylinder and being movable in a different direction for each port.

2. An engine cylinder having inlet and exhaust ports communicating therewith at one end thereof and'being located in diflerent' planes at different distances from :the center, and rigidly connected tubular valve means adjacent the end of the cylinder with which said inlet and exhaust ports communicate, said valve means being movable in a difierentdirection for each port.

8. An engine cylinder having inlet and exhaust ports in combination with a valve member adapted when turned in one direction to open the inlet ports and when turned 1n the opposite direction to open the exhaust ports, said valve member bemg normally resiliently held in closed position, and a exhaust ports in combination with a valve member adapted when turned in one direction to open the inlet ports and when turned in the opposite direction to open the exhaust ports, said valve member being normally resiliently held in closed position, means for alternately moving the valve member to 0p posite sides and permitting the same to swing back to normal position, and means for limiting oscillation after return to normal position.

5. In an internal combustion engine, a cylinder formed at the end with an inlet port opening into a centrally disposed recess and having circumferentially arranged exhaust ports, said recess forming a compression chamber and said inlet and exhaust ports being in different planes, tubular valve .means controlling both of said ports and having an independent movement for each port, and means for reciprocating said valve means.

6. In an internal combustion engine, a cylinder formed at the end with an inlet port opening into a centrally disposed recess and having circumferentially arranged exhaust ports, said recess forming a compression chamber and said inlet and exhaust ports being in different planes, tubular valve means controlling both of said ports and being co axial with the cylinder and formed with slots adapted when the valve means is in a certain position to open the ports, and. means for reciprocating said valve means.

7. An internal combustion engine having an exhaust port opening at the end of the cylinder, and an inlet port opening into a cylindrical recess formed at the end of the cylinder of less diameter than the same, tubular valve means mounted on the inte* 'rior of the cylinder controlling the inlet and exhaust ports, said means comprising a por tion of larger diameter controlling the exhaust ports. and a portion of smaller diameter controlling the inlet ports, and means for actuating said valve means.

8. An engine cylinder having inlet and exhaust ports, a valve member adapted when turned in one direction to open the inlet port, and when turned in the opposite direction to open the exhaust port. and spring means for alternately reciprocating the valve member in opposite directions with a quick return motion.

9. In an internal combustion engine, a fixed cylinder,

a cylindrical valve rigid from the center, both controlled by the valve, cylinder, inlet and outlet ports in different a piston in the cylinder, and means whereby 15 planes and at diiierent distances from the the valve is moved to close the cylinder ports center, both controlled by the valve, a piston during the compression and explosion cycles (5 in the cylinder, and means whereby the valve of the engine. a e V r is moved to close the cylinder ports during In witness whereof we have hereunto set the compression and explosion cycles of the our hands in the presence of two witnesses; 20

against internal pressure co-axial with the Copies of this patent may be obtained for five cents each, by addressing the engme.

10. In an internal combustlon engine, a fixed cylinder, a cylindrical valve I'lgld;

'a ainst internal pressure co-aXial with and inside the cylinder, inlet and outlet ports in difierent planes and at difi'erent distances WILLIAM ,MQGEE YOUNG. RUSSEL SUlHERLAND SMART.

Witnesses: V

M. CULnnR'rsoN, PEARLE GARRoU,

Washington, D. 0.

Commissioner of Patents; 7

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