US1115748A - Valve for internal-combustion engines. - Google Patents

Description

C. N. TEETUR;

VALVE EOE INTERNAL coMEUsTIoN ENGINES.

APPLICATION FILED JAN. 9, 1913. 1 15,748 Patented Nov. 3, 1914. 3 SHEETS-SHEET l.

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G. N. TEBTOR. VALVE POB. INTERNAL GOMBUSTION ENGINES.

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G. NI' TEETOR. VALVE FOR INTgRNAL GoMBUsTloN ENGINES.

AAPPLICATION FILED JAN. 9, 1913. 1,1 15,748.

3 SHEETS-SHEET 3.

WTNESSES Patented N 0V. 3, 1914.

UNITED STATES PATENT onirica.

CHARLES N. TEETora, or HAGERsTowN, INDIANA.

'VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent. Application mea January 9, 1913. serial No. 741,078.

Patented Nov. 3, 19,14.

To all whom it may concern.'

Be it known that I, CHARLES N. TEEToR, a citizen of the United States, residing at Hagerstown, in the county of Wayne and State of Indiana, have invented certain new and useful Improvements in Valves for Internal-Combustion Engines; and I do hereby declare the following to be afull, clear, and exact -descriptionfof the invention, such as will enable others skilled in the artA to which it appertains to make and usev the same. i

, This invention is a valve for internal combustion `engines more particularly adapted tothe four-cycle type, the primar, object be- 1 ing to provide improved means or controll I exhaust.. 30

ling the admission and exhaust of the engine gases.

A further object is to simplify the construction of the valve and render its operation positive and certain at all times, thereby preventing the faulty action of the control# ling element by the accumulation of carbon, burned oil, and the like.

Afuither purpose of the invention is to dispense with'the usual flat valve seat and to providev a substantially cylindrical seat which accommodates both the intake` and the Furthermore, the invention aims to produce a packing which is serviceable'under all compressions; to provide a device in which it is unnecessary to depend on the absolute litting of the parts, or oil-sealing; to provide a controlling element which is `adapted to close ,the intake during the compression,

' power and exhaust'strokes; to insure thefree movement f the gases both on the intake ,and exhaust strokes, and to so construct and position the controlling element that-it will be held in place by its own expansin when the same isfree from engagement by the sleeve valve.

Other objects and advantagesl will become apparent from the detail fdescription of the bodies a casing having intake and exhaust ports, a sleeve valve`niountedfor reciprocating movement within the casing, a controlling element positioned between the sleeve valve Iand the casing and in'alinement lwith the intakeand exhaust ports, and a piston E operating within the sleeve valve.

The?v invention consists, further, in Athe features of. construction, the combination and arrangement of parts, as will be more devices for the the appended claims.

trated 'in the accompanying drawings, but the construction shown therein is to be understood as illustrative, only, and not as delining the limits of the'invention.v

Figure l is a vertical sectional view, transverse of the crank shaft, of a portion of an engine showing the intake opening and exhaust closing. Fig. 2 is a fragmentary sectional view of the position of the parts with the intake open. Fig. 3 is a view similarto Fig. 2 illustrating the position' of the parts as the intake closes. Fig. 4 is a similar view to Fig. 2 as the exhaust opens, with the sealing ring in operation. Fig. 5 is a View similar to Fig. 4 showing the exhaust open.

lFig'. 6 is an enlarged detail view of the conand packvalve 3 shown in the drawings as cylindriyfully hereinafter set forth and pointed out in cal in form and extending for a length sub'- j stantially equal to the upper chamber of the casing.s This sleeve valve is mounted for reciprocating movement within the casing and is provided with a trunnion 4, serving as means for connecting the sleeve to suitable purpose of imparting recip` rocating motion. Any preferred form of mechanism may be employed for accomplishing this resultbut inthe drawings,v I have shown a pitman 5 carried by' an eccentric 6 mounted upon' a shaft 7, which shaft is timed to move at exactly one-half the crank shaft speed for an. engine of the type disclosed. This shafty 7 may be rotated by 'any suitable `means, from the driving shaft, such as gearing, not shown.

A piston V8 is mounted for reciprocating movement within thesleeve valve and this piston is provided with the usual or any preferred form of packing` 9. The mechanism below the piston is indicated dia grammatically as'this part of the engine is of the ordinary, or. anypreferre'd type.

The sleeve'valve is shown ofr substantial thickness for a greater'portion'of its length except near the upper endv thereof, where theouter wall is cut away to provide a chamber 10 which extends from a shoulder 11 to substantially the top of the sleeve, and

this sleeve is also provided with a lower channel 12 connecting with the chamber 10 n and an upper channel 13 connecting with port 16.

The upper end of the sleeve valve 3 is provided with a packing ring 18 having acircumferential channel which -is adapted to it over a shoulder 19 of the sleeve valve. This packing ring 18 serves to close one end of the chamber 10. f Another lpacking ring 20 is shown in the drawings as coperatingwith the ring 18, and this latter ring 20 is employed to seal the connecting ]oint of ring 18, by staggering the connections, as

illustrated in dotted'lines in Fig. 3,'a indi' eating the end of the ring 18 and b indicating the end of ring 20, as will be understood byl those skilled in the art. Connecting with the lower channel 12, is an oil groove 21 extending throughthe sleeve valve, which groove permits the oil in the chamber to form an oil packing for the parts.

An important feature of thex invention its.

a controlling element 22, shown 1n the form of a sleeve having a shoulder or thickened portion 23 positioned within the channel '12 of the sleeve valve 3. This controlling element, or independent sleeve, is provided with a port 24 which is adapted to register with the intake `port 16 and also with .the-

port 15 of the sleeve valve when. the controlling element is moved to a position with its shoulder 23 abutting against the wall 11. This controlling element is moved to yits va` rious positions by the shoulder 23 engaging wall 11 or wall 14 during the reciprovalve and carried by said valve.

eating movement of the sleeve valve 3 within the casing, However, it will be noted that the controlling element will be free from movement by the sleeve valve at certain periods of the stroke, at which time the controlling element will be heldin position by its expansion. Coperating with this controlling element is a sealing ring 25 which is positioned in lthe channel 13 of the sleeve This sealing ring 25 operates to close the intake port 17 is open, and permits said element to return to its lower position, for at this period of the stroke, the controlling element might be so positioned that4 it would not thoroughly The channel 12 isprovided.

' gases.

by its expansion. 16 and the port 24 of the controlling element l during the period ywhen the exhaust port A cut off the intake of material. -The combined action, therefore,- of .the controlling element 22 and the sealing ring 25 operates y to efectually control the lpassage of fuel through the intake port 'and thus save the This feature of the invention will be more clearly understood by an examination of Figs.` 3, 4 and 5, showing, respectively, the downward movement-of thev valve sleeve. In operation, the engine j as1 disclosed in Fig. 1 shows the piston up andthe sleeve valve moving in position to uncover port 24 of the controlling element, bringing ports 15 and 24 into a position to admit the gases from the intake port 16 of the casing. As the piston moves down on the suction stroke, the sealing ring 25 entirely uncovers port 24 of the controlling element 22 and said element 22 is moved upward into complete i alinement with the intake port 16 of the casing, as shown in Fig. 2, with the wall 11 of the sleeve valve coming into contact with the shoulder 23 of the controlling element.

Inl Fig. 3, the intake port 16 is closed by the sleeve valve 3 pushing the 4controlling element 22 across said port 16. The piston is' down ready. for the compression stroke with the sleeve valve 3 in its highest position. It will be noted, also, thatsealing ring 25 has closed the exhaust port 17 At' this point, the 'sleeve valve 3 starts on its downward journey carrying the sealing ring 25 across port vof the controllingr element, as

shown in Fig. 4, making Ait impossible for,

the compressed gases and explosion to escape through the intake port.l The further movement of the 'sleeve in this direction causes the wall 14 of the channel 12 to engage the circumferential shoulder 23 for the purpose of carrying the controlling element 22 across the intake port and downward to theI exhaust positionof the engine. In Fig.

5, the exhaust is shown entirely open and I the sleeve valve 3 is disclosed at its lowest positionf This figure also discloses the low'- est position of the controlling element 22,',- wherein the intake port is effectually cut of by means of the sealing ring 25 coperating with the controlling element 22. In the position of the parts disclosed in Fig. 4, yit will be noted vthat the .sealing ring 25 cooperates with the controllingelementl 22 to cut off the intake port during the compression and explosion. From;1 1g. 1,L it will be observed that the controlling .element '22 is pendent of the` action of the sleeve valve,

said controlling element being held in-place Having thus described myJ "invention,` what I claim as n ewi anddesire to secureby Let-I casing, a sleeve valve, and a freelv movable port controlling element mounted between 120 capable of beingretained in position, indethe sleeve valve and the casing, said controll-ing element being actuated by the movement of said sleeve valve.

2. In an internal combustion engine, a exhaust ports, a

casing having intake and sleeve valve, and a controlling element in- Udependently mounted between the 'sleeve valve and the casing, said controlling yelement being actuated by the movement of said sleeve valve, said controlling element being adapted for movement in the path of the intake and exhaust ports. 3. In an internal combustion engine, a casing having intake and exhaust ports, a sleeve valve having a chamber formed in the face thereof, and a controlling element adapted to assume various positions Within said chamber and with' reference to said ports irrespective of the sleeve valve.

4: In an internal combustion engine, a casing, a sleeve valve having a chamber, L'a piston Within the sleeve valve, a `crank shaft, a port controlling element Within said chamber, and means moving at substantially onehalf crankshaft speed for controllingthe movement of the sleeve valve.

5. In an internal combustion engine, a casing, provided with intake and, exhaust ports, a ,sleeve valve havinga chamber formed in oneface thereof, a controlling element positioned in said chamber and adapted to be moved with reference to said ports, and a sealing ring adapted to coperate `with the controlling element and one of said ports.`

6. .In an internal combustion engine, a, casmg provided with intake and exhaust ports, a sleeve valve havmg a chamber formed 1n one face thereof, a controlling element'positioned in said chamber and adapted to be moved with-reference to said ports, and a sealing ring in said chamber and carried by the sleeve valve, said sealing ring cooperating with the controlling. element to close the intake port during the compression, -power and exhaust strokes. I

7 In 'an internal combustion engine, `a casing provided with intake and exhaust ports, a sleeve valve having a .chamber formed in one face thereof, a packing ring and a sealing ring positioned in saidchamber and carried by the sleeve valve, a controlling element independently mounted inv said chamber, and -means on said controlling element adapted to engage means en said sleeve valve whereby.,v they may be4 moved in unison with reference to said ports in the casing.

8. In an internal combustion engine, a fcasing provided With intake and exhaust ports, a sleeve valve having a 4chamber formed in one face thereof anda port, abutting packing rings and a Asealing ring mounted in the chamber and carried by the sleeve valve, a controlling element in said chamber and having a port adapted to register with the ports of the valve sleeve and casing, and means whereby the controlling 'element and valve sleeve may be moved in unison With reference to the ports in the casing. 9. In an internal combustion engine, a casing provided With intake and .exhaust ports, -a Isleeve valve -having a chamber formed in one face thereof, a packing ring serving as an abutment at one end of said chamber, a sealing ring carried by the valve sleeve and of less thickness than said packing ring, a controlling element mounted in said chamber, and means on the controlling element to engage abutments on the sleeve whereby said controlling element may be moved to various positions by the sleeve valve. i l0. In an internal combustion engine, a casing, a sleeve valve having a chamber and a channel betvveen said sleeve and the casing, a controlling element positioned in said chamber and having a flange adapted to alternately engage the Walls of said channel during the movement of the sleeve within the casing, a piston Within the sleeve valve, and means for operating the sleeve valve independent of thvmovement of the piston. p

11. In an internal combustion engine, a casing, a sleeve valve having a chamber and a channel between said sleeve and the casing, a controlling elementpositioned in said chamber and having a Hange adapted to alternately engage the Walls of said channel during the movement of ythe sleeve Within the casing, an oil groove in said sleeve valve and connecting said channel,

a plurality of packing rings closing one end of said chamber, a piston, and means for operating the sleeve valve independent of the piston.' P

l2. In an internal combustion engine, a casing provided with intake and exhaust ports, a sleeve valve having a chamber and a port, a controlling element havinga port,

said controlling element being movable With reference' to the ports of the casing and the sleeve valve, and a sealing ring in said chamber and carried by `the sleeve valve, said sealing ring coperating With the port of 'the controlling element and thefintake port of the casing during the compression, power and exhaust strokes.

In testimony whereof, I aiix my signay ture, in presence of two Witnesses. CHARLES N. TEETOR.

Witnesses: i

CHAS. E. RioliDoN, J. F. H. MoTHERsHnaD.

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