US1739273A - Sleeve-valve engine - Google Patents

Description

Dec. 10, 1929. w. WADDELL 1,739,273

SLEEVE VALVE ENGINE Filed Aug. 6, 1927 n l 'I II I I \\\\\\\\\\\\\\\\\\\\w I .5 INVENTOR.

Ma #2 M M9 041 A TTORNE Y.

Patented Dec. 10, 1929 UNITED. STATES PATENT OFFICE WILLIAM WADDELL, OF DETROIT, MICHIGAN, ASSIGNOR TO CONTINENTAL MOTORS CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF VIRGINIA SLEEVE-VALVE ENGINE Application filed August 6, 1927. Serial No. 211,015.

to the cylinder.

Ordinarily the sleeve is driven at a single point circumferentially. One of the objects of my invention is to provide a multiple or dual sleeve drive whereby tilting of the sleeve and non-symmetry of thrusts on the sleeve incident to the single drive are overcome.

Such a dual drive is particularlyuseful in heavy duty engines, such as are used in busses,

trucks, or for stationary power plant pur- Q poses; and is useful in general uses of internal combustion engines.

A further object of my invention resides in the provision of a dual drive having means for compensating for minor variations in machining and fitting the parts of the drive. With my invention the drives need not be exactly synchronized, since the mechanism will compensate for the ordinary variations in machining and fitting usually encountered in shop practice. Excessive wear and broken parts arethus avoided.

A further feature of my invention resides in the provision of a multi-drivemechanism for a sleeve valve of the type aforesaid con- 5 veniently located in the engine crank-case adj acent the lower end of the sleeve.

With these and other objects in View my invention also resides in the novel combination and arrangement of parts more particularly hereinafter described and claimed.

Referring to the accompanying drawings in which like reference characters indicate corresponding parts,

Fig. 1 is a sectional elevation view through an engine cylinder,

Fig. 2 is a plan view showing the drive mechanism, and

Fig. 3 is a detail sectional view through 33 of Fig. 2.

In the drawings reference character A repsleeve resents the engine, Fig. 1 illustrating a sectional view through one of the cylinders 10 thereof. Between piston 11 and cylinder 10 is the single sleeve valve 12. The sleeve and cylinder ports are not shown as these are well known in the art and form no part of this invention. Driven from the crankshaft 13, as by gearing indicated by pitch circles 13, at equal angular velocities of half the crankshaft speed (for a four stroke cycle engine for illustration) are valve shafts 14 and 15. These valve shafts are respectively provided with driving gears 16 at each cylinder 10, each driving gear meshing with a driven gear 17 fixed to a cross shaft 18 rotatable in bearings 19, 20 and carrying a crank 21.

Surrounding sleeve 12 is a compensating sleeve driving ring 22 driven from cranks 21 by ball and socket connections 23 therewith, the pins 21 being slidable within the balls to permit the ring 22 and sleeve 12 to be driven in an oscillating path. The sleeves 12 may be perforated at 24 opposite cranks 21 to permit close nesting of the parts.

The ring 22 is pivotally connected with the sleeve 12 through pivot pins 25 best shown in Fig. 3.

The cranks 21 are preferably positioned opposite the ends of a sleeve diameter and the pins 25 are preferably located at the ends of a diameter lying at right angles with the first mentioned diameter. A small clearance 25 is preferably provided between the ring 22 and the sleeve valve to permit a slight shifting movement of the ring.

From the foregoing it will be apparent that the sleeve will be driven'in the desired path from opposite points, affording a balanced driving action onthe sleeve. At thesametime the drives need not be exactly synchronized as minor variations in machining, fitting, and meshing of gears will be compensated for by the ring 22 which is capable of a certain amount of movement during the driving action to relieve any tendency toward binding. Thus the ring may tilt on the pins 25 and shift slightly transversely of the sleeve due to the clearance 25 I have thus provided a balanced dual sleeve drive and as a further refinement I have provided the compensating possibilities for the ring as described. If desired the latter mentioned feature may be eliminated since my invention in its broad concept is directed to the balanced drive.

. lVhat I claim as my invention is:

1. An internal combustion engine comprising in combination, a cylinder, a piston operable in said cylinder, a sleeve valve between the cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, and a plurality of driving means engageable with the sleeve at spaced points for imparting the said movement to the sleeve.

2. An internal combustion engine comprising in combination, a cylinder, a piston operable in said cylinder, a sleeve valve between the cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, a plurality of driving mechanisms, and compensating means connecting said mechanisms with the sleeve for driving the sleeve with the aforesaid movement.

- 3. An internal combustion engine comprisprising in combination, a cylinder, a piston operable in said cylinder, a sleeve valve between the cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, a plurality of driving mechanisms, and a ring surrounding the sleeve connected to the said mechanisms and sleeve at a plurality of points for imparting the aforesaidmovement to the sleeve. I

4;. An internal combustion engine comprising in combination, a cylinder, a piston operable in said cylinder, a sleeve valve between the cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, a pair of valve shafts driven at equal angular velocities from the crankshaft, crank pins-respectively operated from said valve shafts and positioned at opposite sides of the sleeve, a ring surrounding the lower end of the sleeve, ball and socket connections between the ring and crank pins, and connections between the ring and sleeve at opposite sides of the sleeve, said ring and sleeve connections being located at points spaced circumferentially of the ring intermediate the said ring and crank pin connections;

5. An internal combustion engine comprising in combination with a cylinder and piston, a sleeve valve coaxial with the cylinder, and means including a compensating mechanism for driving the sleeve at a plurality of points to impart to the sleeve a combined oscillating and reciprocating movement.

6. An internal combustion engine comprising in combination, a cylinder, a piston operable in said cylinder, a sleeve valve between the cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, a'ring surrounding the lower end of the sleeve, means pivotally connecting the ring and sleeve at points spaced ciroumferentially of the ring, and means acting on said ring at a plurality of points spaced circumferentially of the ring and the said pivotal connecting means for imparting the said movement to the sleeve.

7. An internal combustion engine comprising in combination, a cylinder, a piston operable in said cylinder, a sleeve valve between the cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, and a dual driving mechanism for the sleeve having provision for compensating for inaccuracies of machining and fitting of the driving mechanism.

8. An internal combustion engine comprising in combination, a cylinder, a piston operable in said cylinder, a sleeve valve between the'cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, and a plurality of substantially similar sleeve driving mechanisms acting on said sleeve at diametrically opposite points to impart to the sleeve the aforesaid movement.

9. An internal combustion engine comprising in combination, a cylinder, a piston operable in said cylinder, a. sleeve valve between the cylinder and piston having a combined reciprocating and oscillating movement with respect to the sleeve axis, and a plurality of sleeve driving means having a balanced action on the sleeve to impart the aforesaid movement thereto.

10. An internal combustion engine of the character described comprising a sleeve valve, multiple driving mechanisms for the sleeve, and means compensating for minor variations in machining and fitting parts of the driving mechanisms.

11. An internal combustion engine of the character described comprising a sleeve valve,-

a crank case into which the lower end of the sleeve valve extends, and a multiple driving mechanism for imparting balanced drivingaction on the sleeve valve located in the crank case adjacentthe lower end of the sleeve.

12. An internal combustion engine of the character described comprising a sleeve valve,

a crank case into which the lower end of the sleeve valve extends, and a multiple driving mechanism for imparting balanced driving action on the sleeve valve located in the crank case adjacent the lower end of the sleeve, and on opposite'sides thereof, said driving mechanism being adapted toimpart to the sleeve a combined reciprocating and-oscillating movement.

13. In a sleeve valve engine, acylinder, a sleeve working coaxially therewith, a valve shaft, driving mechanism between the valve shaft and sleeve including a ring encircling the lower portion of the sleeve.

14. An internal combustion engine comprising in combination, a cylinder, a piston, a sleeve valve, and sleeve driving means engaging the sleeve at substantially diametrically opposed points and adapted to impart to the sleeve 21 combined oscillating and reciprocating movement.

15. In a sleeve valve engine, a cylinder and cooperating sleeve valve, a driving member, a driven element connected With the sleeve, and an element intermediate the driving member and driven element shiftable in response to a tendency toward binding in the driving mechanism.

In Witness whereof, I hereunto subscribe my name this th day of July, A. D. 1927.

WILLIAM WADDELL.

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