US1268835A - Valve for internal-combustion engines. - Google Patents

Description

W. HAAS & T. IVIcALEXANDI-IEI.

VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR. I8. I91?- I v Patented-June 11, 1%18.

mssws I M PILEXNDE WILLIAM HAAS AND TALBEBT McALEXANDER, or RAUB, INDIANA.

VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented June 11, 1918.

Application filed ApriLlS, 1917. Serial No. 163,018.

To all whom it may concern:

Be it known that we, WILLIAM HAAS and TALBERT MoALnXANDnR, citizens of the United States, residing at Raub, in the county of Benton and State of Indiana, have invented certain new and useful Improvements in Valves for Internal-Combustion Engines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain new and useful improvements in valves for internal combustion engines, and has for its primary object to provide a very simple mounting and arrangement of the intake and exhaust valves and means for operating the. same.

Itis also another object of our invention to provide a simple and effective means forautomatically supplying oil from the crank case of the engine to the walls of the valve chamber. a

And it is a furthergeneral object of the invention to provide certain improvements in the intake and exhaust control valves of internal combustion engines, whereby the engine is rendered more efficient and reliable in its operation, though. without increasing the manufacturing cost thereof.

With the above and other objects in view, our invention consists in the novel features of construction, combination, and arrangement of parts to be hereinafter more fully described, claimed and illustrated inthe accompanying drawing, in which,

' Figure 1. is a vertical sectional view through the cylinder of an internal combustion engine, illustrating the preferred embodiment of our improved valve mounting and operating means;

Fig. 2 is a section taken on the line 22 of Fig. l;

Fig. 3 is a section taken on the line 3-3 of Fig. 1; and

Fig. 4 is an enlarged longitudinal section through the sectional oil supply tube.

Referring in detail to the drawing, 5 designates the enginecylinder and 6 the crank case thereof. The piston 7 operating in the cylinder 5 may be of any ordinary or approved construction and is connected in the usual manner by means of the rod 8 to the crank of the engine shaft 9. The cylinder 5 is provided upon one side with intake and exhaust valve chambers 10 and 11 respectively, said chambers as well as the walls of the cylinder 5 being water jacketed in the usual manner.

In the drawing, we have shown the intake valve 12 arranged in the chamber 10, said valve being in the form of a cylindrical piston having packing rings 13 seated in its periphery to prevent the passage of the gases downwardly around said valve. It will be understood, of course, that the eX- haust valve which is arranged in the other chamber 11 is of like construction. The water jacketed wall of each chamber is provided with ports, as shown at 14, for the intake and exhaust respectively, of the gases. To the valve piston 12, one end of a rod 15 is suitably connected, said rod extending downwardly through a guide sleeve 17 centrally formed upon a diametrically disposed bar 16 which is fixed .at its ends to the wall of the valve chamber 10.

Below the valve chamber, an arm 19 of inverted, channel-shaped form is pivotally mounted at one of its ends upon the wall of the crank case 6, as shown at 20. The lower end of the valve rod 15 is engaged upon the other or free end of this arm. A roller 21 is loosely mounted upon a pin 21f fixed in the'side walls of the channel-shaped arm 19. With this roller, a cam element 22 fixed upon the shaft 23 co-acts. It will be understood that the cam shaft is operatively connected in any approved manner with the crank shaft of the engine so as to operate the valve in timed relation to the movement of the piston 7.

Upon the piston rod 15, above and in spaced relation to the arm 19, a flanged collar 24 is engaged and held against downward movement on the rod by a transverse pin 25 engaged through the valve rod. A coil spring 26 is disposed around the valve rod and the lower end thereof bears on the flange of the collar 24, the upper end of said spring surrounding the sleeve 17 and engaging against the under side of the bar 16. It will be understood that this spring at all times yieldingly urges the valve rod downwardly to hold the roller 21 in bearing on gagement upon the cam 22.

By means of the above construction and arrangement of the several parts, it will be understood that the spring 26 at all times acts to hold the lower end of the valve stem or rod 15 in firm contact upon the pivoted arm 19, thereby insuring freedom from binding in the operation of the parts and a responsive and unrestricted movement of the valve 12, whereby the admission of the gases to the engine cylinder is properly controlled.

In connection with our improved valve mechanism, we have also provided means for automatically lubricating the valve and the walls of the valve chamber. To this end, a pipe or tube 27 is suitably secured within the crank case of the engine and has an angularly disposed or curved lower end portion 28 extending into the body of oil in the base portion of the crank case. This lower end of the tube 27 is provided with an inwardly opening ball valve 29. A second tube 30 is telescopically engaged for sliding movement in the vertical portion of the tube 27 which extends upwardly into the lower end of the valve chamber. The upper end of this tube 30 is provided with a horizontal. arm 31 extending from each side of the tube, said arm 31 being open on its outer side to discharge the oil upon the wall of the valve chamber immediately below the valve 12. This tubular arm 30 may be suitably attached to the bottom face of the valve or to the valve rod or stem 15. The lower end of the tube 30 is also provided with an inwardly opening ball'valve 32.

In the operation of the valve, in each upward movement thereof, oil is drawn by suction into the tube 27 and the check valve 29 prevents a backward flow of the oil into the crank case in the downward movement of the valve piston. In this latter movement of the valve, the tube 30 is moved downwardly in the tube 27 and the oil flows upwardly from the latter tube past the valve 32 and into the tube 30, said valve 32 retaining the oil in the latter tube. By the collection of the oil in the tube 30, it is finally discharged through the 0 on side of the horizontal arm 31 upon tie walls of the valve chamber, and is thus applied to the periphery of the valve piston. 12 in the vertical movement of the latter. In thismanner, friction in the sliding movement of the valve is practically eliminated and which further serves to insure .the reliable and positive operation of the valve.

From the foregoing description, takenin connection with the accompanying drawing,

the construction, manner of operation, and several advantages of our invention will be clearly and fully understood. The improved conic: ofthil patent may be obtained for valve mechanism and the lubricating means therefor consists of comparatively few parts which are all of simple construction so that the device may be embodied in the ordinary internal combustion engine without necessitating any material alterations therein or greatly increasing its manufacturing cost. It is, of course, apparent that the valve may be of other forms and of various sizes, and the several elements of the valve mounting and operating means may be otherwise arranged than is illustrated. The several structural parts of the lubricating device are also capable of considerable mechanical variation as may be necessitated by the circumstances present in the particular application of the invention. It is, therefore, to be understood that while we have herein shown and described the present preferred embodiment of the device, the same is susceptible of considerable modificationthereinand we, therefore, reserve the privilege of resorting to all suchlegitiniate' changes as may be fairly embodied Within the spirit and scope of the invention as claimed.

Having thus fully described our invention, what we desire to claim and secure by Letters Patent is:

The combination with an engine case having a valve chamber and a reciprocating valve therein provided with a stem, of a channel-shaped arm having side flanges extending its entire length and pivotally mounted at one of its ends upon the wall of the engine case immediately below the valve chamber, the open side of the channelshaped arm facing downwardly and the lower end of the valve stem bearing upon the medial wall of the arm at its free end, a roller mounted between the side flanges of the arm at the latter end thereof, and a rotary operating element mounted in the engine case below the roller and coacting therewith, the aXes of said operating element and the roller being in vertical alinement with the aXis of the valve stem.

In testimony whereof We hereunto afliX our signatures in the presence of two witnesses.

WVILLIAM I-IAAS.

"Witnesses ERNEST SPROULL, T. KIRKPATRICK.

five cents each, by addressing the"commis sicmmn o1 Bahamian Washington, D. G."

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