Nov. 19, 1946. c. w. HALL 2,411,321 QUICK OPENING ROTARY VALVE Filed April 30, 1945 G77/:fuis >h4 HALL. BY E É ~ ~ ATTORNEY. f 2,411,321 Patented Nov. 19, 1946 UNITED 'STATES PATENT OFFICE 2,411,321 QUICK OPENING ROTARY VALVE Charles W. Hall, Denver, €010., assigner to Malcolm S. Losey, Denver, Colo. Application April 3l), 1945, Serial No. 591,089 4 Claims. This invention relates to an improvement in rotary valves for internal combusti-on engines. The principal object of this invention is to provide means in combination with a rotary valve whereby the opening and closing of the valve ports will be accelerated. Another object of the invention is to provide an improved. means for mounting the valve whereby friction (Cl. 12B-190) 2 l the walls will be reduced and an accurate oil-floated bearing will be provided. Other objects and advantages reside in the de tail construction of the invention, which is de signed for simplicity, economy and eii‘iciency. These will become more apparent from the folw lowing description. tion, it will bring the intake passage I5 into align ment between the cylinder port I9 and the intake port I3 to allow fuel to enter the Cylinder. The valve seat I3 is closed by means of a head member 20 Isecured Ito the engine by means of suitable cap screws 2l. The head member 2Q is in turn closed by means of a cap plate 22 held in place thereon by means of cap screws23. A conical guide boss 24 is formed on and sup ported from the head member 2li and extends into a conical seat in the head of the valve I4 to main tain the latter in alignment with its axis and out of frictional engagement with the walls of the valve seat. The valve is rotated by means of a In the following detailed description of the in vention, reference is had to `the accompanying hub sleeve 2S which extends,upwardlytherefrom through the guide boss 2c terminating in any suit able drive mechanism. As illustrated, the sleeve drawing which forms a part hereof. 23 carries a driven gear 2i' which is driven from a Like nu drive gear 23 mounted on a valve drive shaft 29. merals refer to like parts in all views of the draw» The quick opening feature of the valve results ing and throughout the description. 20 from the action of an oscillating plate ¿lil placed In the drawing: between the valve lll and the cylinder head El. Fig. l is a cross section through the head of a This plate is provided with an opening positioned typical internal combustion engine cylinder illus to normally align with the cylinder port I3 and trating the improved valve in place therein; Fig. 2 is a horizontal section, taken on the line 25 provided with an axially expansible sealing ring 3l having a ring opening 32. The plate 30 is 2_2, Fig. 1; mounted on the extremity of a plate shaft 33 ex Fig. 3 is a similar section, taken on the line 3_3, Fig. 1; and tending upwardly through the valve I4 and its sleeve 26 and terminating in an actuating lever Fig. 4 is a diagrammatic View illustrating the action of the quick opening feature of the inven 30 34. The actuating lever 34 is secured to the shaft 33 in any'desired manner to prevent re1ation. tive movement therebetween, such as being In the drawing, a portion oi an internal com mounted on a square extremity thereof by means bustion engine cylinder is indicated at I0 with of an attachment screw 35. its cylinder head at I I. The cylinder may be sur rounded by the usual cooling water jacket space 35 The free extremity of the lever 34 carries a cam follower pin 33 which rides in a cam groove 3`I_ I2. A cup-shaped valve seat I3 is formed over formed in a cam member 43. The cam member the cylinder head l l to receive a cylindrical rotary 4B is mounted on the drive shaft 29. The cam valve le. Suitable sealing rings 25 seal the valve groove is provided with a “high point,” at one I4 to its seat i3. The valve is provided with an intake passage I5 communicating between a liat 40 side of its periphery so thatl the pin 361 will act to reciprocate the lever 34 forwardly and back bottom surface on the valve I4 and an intake wardly once during each revolution of the drive port I3 in the cylindrical wall of the seat I3. lt gear 28 and twice during each revolution of the is also provided with a suitable exhaust passage driven gear 2l and the valve I4. The reciproca I'I communicating at intervals through the bot tom of the valve I4 and with an exhaust port 45 tion is so timed that when the exhaust passage I1 begins to travel over the cylinder port I9, as in I8 in the cylindrical wall of the valve seat I3. dicated by the arrow A in Fig. 4, the plate 33 will The passages I5 and l? communicate through the bottom of the valve ILI at 90° from each other be rapidly rotated in a direction opposite to the and at equal radial distances from the axis of the rotation of the valve for a short distance, as in valve so as to alternately align with a cylinder 50 dicated by the arrow B Fig; 4, so as to :instantly port I9 opening through the cylinder head Il. increase the area of the initial opening. It will Thus, when the valve is in the position of Fig. l, then move in the direction of the rotation of the the cylinder l0 is in communication through the valve back to its original position in alignment exhaust passage I'I with the exhaust port I8. with the cylinder port I9. This serves to pro If the valve I4 is rotated 90° from the above posi 55 vide an instant, relatively-wide, opening between 2,411,321 4 3 opening between the passage and the por-t com the port I9 and the exhaust passage I'I, as indi prising an oscillating member positioned there cated in Fig. 4, even though the passage has only begun to uncover the cylinder port. The plate between, said oscillating member having an open ing communicating between said passage and said will again oscillate after the valve has rotated port and means for oscillating said member to 189°. This oscillation, however, has no eiîect since the cylinder` port I9 is closed at that time. :cause the latter opening to move over and open said passage more rapidly than the movement The latter oscillation can be avoided, of course, by changing the gear ratios so that the drive shaft of said passage over said port. 2Q rotates at the same speed as the valve. 2. The combination with a rotary valve hav A similar quick opening action can be obtained 10Y ing a gas passage which periodically aligns with on the intake passage I5, if desired, by placing an a cylinder port, means for creating a more rapid additional “high point” in the cam groove at the » opening between the passage and lthe port com proper point. prising: a disc positioned between said passage A compression spring 39 constantly urges the and said port, .there being an opening in said disc lever 34 upwardly to cause the plate 30 to be communicating between said passage and said pressed lto a sealing fit against the bottom of the port; and means for oscillating said disc to move valve. The sealing ring 3l is of a multiple type said opening to open said port to said passage as which expands vertically to seal the ring open the latter approaches axial alignment with said ing`32 lboth to the bottom of the valve and to the port. _ V head of the cylinder. 3. The combination with a rotary valve hav 20 The valve is hydraulically urged downwardly ing a gas passage which periodically aligns with by means of lubricating oil under pressure be a cylinder port, means for creating a more'rapid tween the conical guide member 24 and the con opening between the passage and the port com ical seat 44. This oil may be admitted through prising: a disc positioned between said passage the cap 22 through a feed nipple 38; then-ce flow and said port, lthere being an opening in said disc ing under pressure, through an axial oil passage communicating between said passage and said 4I in the shaft 33, to outlets 42 at the bottom of port; a shaft carrying said disc; an actuating arm the conical seat 44. It thence urges the members extending from said shaft; and an eccentric 24 and 44 apar-t as it flows upwardly to a re member positioned to swing said actuating arm stricted discharge 43. The oil passage 4i may 30 so as to cause said opening «to open said passage be continued into the plate 30 as indicated at 44 in advance of Ithe alignment of said passage with to provide lubrication under pressure to the bot- y tom of the valve I4 and plate 30. - While a speciñc form of the improvement has said port. Y ’ v 4. In a rotary valve of the type adapted to be positioned between an engine cylinder and its been described and illustrated herein, it is de head .and having passages which periodically sired to be understood that the same may be varied, within the scope of the appended claims, ` communicate -between a cylinder port and ex haust and intake por-ts, means for mounting said without departing from the spirit of the inven tion. Having thus described the invention, what is claimed and desired secured Iby Letters Patent is: i Valve- comprising; an inverted conical bearing 1. The combination with a rotary valve hav ing a gas passage which periodically aligns with a cylinder port, means for creatingv a more rapid urging said valve with cavity upon said bearing member extending from said head into a conical, axially positioned bearing cavity- in said valve and providing a bearing therefor; and means for member. . CHARLES W. HALL.