US1156309A - Valve of internal-combustion engines. - Google Patents

Description

W. I. PHIFER.

VALVE OF INTERNAL comsusnou ENGINES.

APPLICATION FILED FEB. 11...!914.

Patented Oct. 12,1915.

2 SHEETS-SHEETI W I. PHIFER. 'VALVE OF INTERNAL COMBUSTION ENGINES. v

PPPPP CATION FILED FEB. H. 1914.

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Patented Oct. 12,1915. Z ,6. 2 SHEETS-SHEIET 2.

' moved prior to of Fig. 2.

WASHINGTON I. liHIFER, OF COLLI NSVILLE, .ILLIZbl'OIS.

VALVE 0F INTERNAL-COMBUSTION ENGINES.

" Specification of Letters Patent.

Patented Get. 12,1915.

Application filed February 11, 1914. Serial No. 817,964.

To all whom c't may concern:

Be it known that I, Vasnrnorox I. PHIFER, a citizen of the United States of America, re-

siding in Collinsville, in the county of Madivalve operating mechanism for internal combustion engines whereby the valves are not the opening or closing of the ports until the crucial moment, at which time they are caused to travel quicklyso that the ports are immediately closed or opened. Another object is to provide an improved type of exhaust valve which is moved by the force of the explosive pressure, thereby opening the ports.

A further object is to provide an improved valve which will have equal adjustment of expansion and contraction and will keep the valve cylinder clean from carbon.

Other and further objects will appear in the specification and be specifically pointed out in the appended had to the accompanying drawings exempli-. fying the invention, and in which,

Figure 1 is a vertical section taken through an internal combustion engine, showing this improved valve and opera ting mechanism relating thereto. Fig. 2 is an enlarged side elevation of the exhaust valve and valveopcrating mechanism. Fig. an enlarged plan view of Fig. 2. Fig. 4: is an enlarged horizontal section taken on the line 4-4:

Referring to the drawings: 1 designates the main cylinder of an internal combustion engine, said cylinder being mounted on the crank casing 2. Journaled in'said crank casing is the crank 3 to which is secure the connecting rod 4, said connecting rod being. 'secured to the wrist pin 5 of the piston 6 which is mounted in the cylinder 1. Formed on each side of the cylinder 1 are inlet and exhaust valve cylinders 7 and 8,

respectively.

lieciprocably mounted in the inlet cylinder 7 is the inlet valve 9, and reciprocably mounted in the exhaust valve cylinder is the exhaust valve 10. Secured to the inlet valve 9 is a valve rod .inder 7 is an inlet port claims, reference beingv 'haust valves 10, the

11, said valve rod adapted-to be actuated by the cam 12, which is carried 'bythe cam shaft 13. Secured to the exhaust valve 10 [S a valve rod 14:, said valve rod adapted to be actuated by the cam 15 mounted on the cam shaft 16. These valve rods 11 and 1d can be actuated in any manner, but in this instance are supposed to be. actuated by a train of gearing which is shown'indotted l1nes in Fig. 1, said gearing being "in engagement with the crank shaft 3.

Communicating with the inlet valve cyl- 17, and leading fro-m said valve cylinder 7 to the cylinder 1 is a port 18. Communicating with the cylinder 1 and exhaust valve cylinder 8 is a port 19. And leading from said valve cylinder 8 to Y the exhaust pipe (not shown are exhaust ports 20.

In the construction of the exhaust valve 10, the valve rod 14 has a shoulder 21 formed thereon. And "in forming said shoulder on said valve rod a reduced portion portion 22, the arms thereof engaging the top ofthe split ring 25. Then the rings 24, 25 and spider 27 are locked together against the seat 23 by the ma 29.

"In the construction of the inlet valve 9 only one split ring 30 is necessary. In this sleevefthere are no ports such as in the exhaust valve just described, the ring resting on the seat 31 carried by the valve rod 11. And the spider of the valve rod. The ring and spider are secured together by the nut 83.

In the construction of the cams 12 and 13 which actuate this improved type of valve, said cams are turned off a plain shaft and are not mounted on the outside of the shaft as are the cams of present day use. As shown by the cam 12, when the valve 9 is in a position closin the port 18, the lower end of the valve rod is resting on the outside circular portion 34: of the cam. Whereas, when the valve is down leaving the port open, as shown by an inspection ofthe exlower end of the valve 32 is mounted over the end rod 14 is resting on the inside of the cam or inner cam face 35,the lower portion of the cam rod having moved below the center of the shaft 16. This construction of a cam 'provides for a greater travel of a valve rod owing to the fact that the cam engaging end of the valve rod engages the inside and outside surfaces of the cam inasmuch as the cam engaging end of the valve rod on leaving'the outer cam surface of the cam will immediately engage the inner cam surface, Which is below the center of the cam shaft. This construction-=will provide means for quickly openingand closing the ports.

In the position of the exhaust valve 10, shown in Fig. l, the engine is exhausting, the gases passing through the port 19 and into the exhausteylinder'8. Some of the gases pass over the valve j and enter the upper port 20, whereas, the remaining gases will pass into the interior of the valve and exhaust through the ports 26 of the valve and the lower port 20. In order to close the exhaust valve, When the cam 15 is turned about onequarter Way around from the po sition shown, the exhaust val e will close the ports 20 so the cylinder 1 is ready for a fresh charge of the explosive mixture. In

the opening of the ports 20 for the escape of the burnt gases, the cam 15 will be in. such a position that the pressure in the cylinder will force the exhaust valve 10 downwardly.

In the operation of the inlet valveo 9, the port 18 is closed by the cam 12 engaging the lower end of the valve rod 11 and m'oving said valve upwardly. \Vhereas, when it is desired to open the port 18 for the admission of a fresh charge of explosive mixture, the cam 12 will be in such position that the spring 36, which is engaged at-one end against a bracket 37 mounted on the casing of the cylinder 1 and, a washer 38 carried by the valve rod 11, will move the valve rod downwardly so the valve will be moved, thus opening the port 18.

In the improved form of valves shown, in which split rings are used, said rings will snugly engage the walls of the valve cylinders by reason of the expansion provided by this construction. l urt hermore, these valves can expand and contract more uniformly.

During the reciprocation of this improved type of valves, and more especially the exhaust valve 10, the outer upper. edge 89 of the sleeve 25 will scrape. the wall of the cylinder 8 on its upward stroke. And the shoulder 40 formed on said sleeve 25 will scrape the Wall of the cylinder on its downward stroke, thereby loosening the carbon from the valve cylinder.- And when the exhausting of the burnt gases occurs. the loosened carbon will be blown through the exhaust ports 20.

lVhat I claim is:

1. In an internal combustion engine, a valve comprising a pair of split sleeves, a seat for one of said sleeves, a valve rod for said seat, said sleeves abutting each other when mounted over said VfilWE rod, and a clamping member having passageways formed therein mounted on said valve rod adapted to clamp said sleeves and said seat together.

2. In an internal combustion engine, valve comprising a pair of split sleeves of uniform thickness, said sleeves being'mounted endwise to each other, and means for securing said rings to a valve rod. If

3. In an internal combustion engine, a valve comprising a pair of split sleeves, ports formed in one of said sleeves, said sleeves being mounted endwise 0Ve1 a valve rod, and a member carried by said rod adapted to clamp said sleeves together. 5 I. In an internal combustion engine, a

valve comprising a split'sleeve, a seat for said sleeve, said seat being mounted on a valve rod,- and means mounted on one end of said rod for securing said sleeve and seat to said valve rod.

5. In an internal combustion engine, a valve cylinder, a valve for said cylinder, said valve, comprising'asplit sleeve and a seat for said sleeve, said 'seat being mounted 95 on a valve rod, and means for securing said sleeve and said seat to said rod, said seat forming an end wall to said valve cylinder.

6. In an internal combustion engine, a valve comprising a pair of split sleeves, ports formed in. one of said sleeves, said sleeves being mounted together endwise, a seat for said sleeves and a valve rod for se curing said sleeves and seat together.

7. In an internal combustion engine, a

valve cylinder, a valve for said cylinder, said valve comprising a pair of split sleeves, ports formed in one end of one of said sleeves, a seat for supporting said sleeves, said seat being mounted on a valve rod, said valve rod forming means of securing said sleeves and said seat together said seat forming an end wall to said cylinder. 8 In an internal combustion engine, a valve comprising a split sleeve, a seat for said sleeve, said seat being mounted on a valve rod, and means for securing said sleeve and seat to said valve rod, said seat forming a closure at one end of said valve.

WASHINGTON I. PHIFER.

In the presence of M. C. HAMMON, H. G. FLETCHER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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