US1273433A - Internal-combustion engine. - Google Patents

Description

R. WEHR.

INTERNAL COMBUSTION ENGINE.

APPLICATION HLED mm: 20.1911.

3 SHEETSSHEET l.

Patented July 23, 1913. 3

R. WEHR.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JUNE 20. ISIZ.

1 73,433. Patented July 23, 1918.

a SHEETSSHEET 2.

BY v I 5% R. WEHR.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JUNE 20. I917.

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' I ATTORNE BUDOLIPH WEI-IR, OF NEW YORK, N. Y.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed June 20, 1917. Serial No. 175,847.

To all whom it may concern:

Be it known that I, Renown \Vnnu, a subject of the King of Hungary, and a resident of the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Internalt-Combustion Engines, of which the following is a specification.

The present invention relates to internal combustion engines, and more particularly to the type which is provided with rotary valves.

The main object of the invention is to provide a packing or lining for the valve chambers of the engine, which automatically adjusts itself to compensate for the wear thereof.

Another object of the invention is to provide a lubricating system for the valve seats of the engine, which simple in construc tion, efficient in operation, and prevents the gases, fuel and the exhaust gases, respectively, from passing from any one of the cylinders of the engine to the adjoining ones.

With these and other' objects :in view, which will more fully appear as the nature of the invention is better understood, the

, same consists in the combination, arrangement and construction of parts hereinafter described, pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that many changes may be made in the size and pro portion of the several parts and details of construction within the scope of the appended claims Without departing from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated in the accompanying drawings, in which:

Figure 1 is a top plan view of a portion of an internal combustion engine having the improvement mounted thereon; l ig. a section taken on line 22 of Fig. 1; Fig.

.3 is aiportion of a section taken on line 3-3 of Fig. 1; Fig. 4 is a pers 'lective view, partly in section, of the rotary valve of the engine; Fig. .5 is a perspective view of a section of the packing; Fig. 6 is a perspec tive View of a section of the packing, eopperating with the one shown in Fig. 5; and Fig. 7 is a plan view of the development of the valve casing, showing the relation of the several ports therein.

Referring now tothedrawings, the are .meral 10 indicates one of the working cylinders of the engine, provided for the wellknown purpose, with a water jacket 11. In this cylinder rcciprocates a piston 12 of any suitable construction. For igniting the successive combustible charges supplied to the cylinder, a sparking device 13 of any suit able type is provided. On the top of the engine, which is of the multi-cylinder type, are formed two valve casings 14, one on each side of the engine, and both running parallel to the crank shaft thereof (said crank shaft being not shown). The purpose of providing two valve chambers is to enable the inlet and exhaust ports to be made of smaller sizes, inasmuch as two rotary valves are thus being made use of, instead of the usual single valve. The valve chambers and so also the rotary valves are alike in constructimi, so that herein the description of only one chamber and one valve becomes necessary.

Each valve chamber communicates with the cylinders of the engine through ports 15, and each chamber has inlet ports 16 and outlet ports 17, the number of the inlet ports in each chamber being equal to the number of outlet ports therein, and corresponds to that of the number of cylinders.

The inlet ports 10 communicate with a fuel supply pipe 18, and the outlet ports 17 with an exhaust pipe 19.

lVithin each valve chamber is disposed a rotary valve 20. These 'alves are actuated from the crank shaft of the engine byany suitable gearing (not shown). The valves rotate at a speed half of that of the crank shaft, or in other words, while the crank shaft makes two revolutions each valve completes one turn, as usual in four cycle internal comlnlstionengines. Each valve'is provided with peripheral notches 91, corresponding to the number of ports 15 leading to the respective valve chamber. These notches are in each valve staggered in the same manner as the several cranks of the crank shaft are set in relation to one another.

In order to prevent gases from flowing from one cylinder to another one, there are provided in the valve (:tlSlllg suitable packings between each two adjoining notches 21 in the valve therein. For this purpose there are provided in each valve chamber, between the ports 15, packing housings 22, closed by covers 23, which are held on the housings by any suitable means, 'lorinstance screw-l )olts 2-1:.

spective cover 23. This extension is cylindrical and provided with exterior screwthreads 32, meshing with those of a cap 33, within which is disposed a spring 34, that has a tendency to shift the wedge 29 inwardly.

With each valve chamber are associated two channels, denoted by the numerals and '36. Into these channels is forced, by any suitable feeding means, lubricating material, the channel 35 serving to supply lubricating material to thoseiportions of the valve seats which are disposed between the ports 15 and 17, and the channel 36 ukthose portions of the valve seat which are l cated between the ports 15 and 16. Between each port 15 and 17 extends throughout the lengths thereof a longitudinal groove 37, and between each .port '15 and 16 a longitudinal groove 38. Adjacent to each groove 37 leads from the surface of theivalve seat a bore 39 to the channel 35, and adjacent to each groove 38 a bore 40 to the channel 36. In

the valves are formed, in alinement with each set of/ bores 39 and 40, peripheral grooves 41, into which is forced, through the said bores, 'asupply of lubr'cating material, and from which it is con ducted into the rooves 37 and 38, to be distributed, in turn, from the latter over the valve seats,

The packingrfblocks 25 are, preferably, made of grayi 7 than the material of which the valves are formed. i

The operation of this device is as follows: Let suppose that the acking blocks are in the positions shown in Fig. 3 bf the draw mgs. inward, thereby causing the said blocksto contact throughout the entire areas of their concave under. surfaces 26, witl i the valves, T thereby formlng an air-tight closure, so as to -termediary 0f the wedges 29 to be lowered prevent the pressure in the rw'orl'ring chambers of the cylinders from being lowered- --by leakage and also to prevent gases. from flowing from one cylinder to another one.

As, in-use, the packing blocks wear off, the springs: 3 1 causethe said blocks by the inand to makecontinu'ously an air tight cloon, which is somewhat softer The springs34 force jjthe wedges 29-- sure. The tension of the springs 34 may be varied by turning the caps 33 in one or the other direction, as desired.

i What I claim is i I 1. In' a multi-cylinder internal combustion engine, the combination with a'cylinder of the engine having a port, of a valve casing thereon provided with a corresponding inlet and an outlet, a rotary valve arranged in said casing having means" for periodically opening and closing communications between said port andsaid inlet and outlet, a packing housing disposed at the side of said port, a packing ,block shiftably disposed in said housing having a concaved face abutting against said valve and a slanting face opposite to said concaved face; a spring-pressed Wedge shiftably disposed in said housing bearing against the slanting face of said block, and means disposed outside of said housing for adjusting the pressure exerted by said wedge upon said block. 2. In a multi-cylinder internal combustion engine, the combination with a cylinder of the engine having a port, of a valve casing thereon provided with a corresponding inlet and an outlet, a rotary valve arranged in said casing having means for periodically opening and closing communications between said port and said inlet and outlet, a packing housing disposed at the side of said port, a packing block shiftably disposed in said housing having a concaved face abutting against said valve and a slanting face, opposite to sald concaved face, a wedge, shiftably .disposed in said housing bearing against'the slanting face of said block, means for causing said wedge to continuously force said blo against said valve, and means dis posed dutside ofsaid housing foradjusting the pressure exerted by said-wedge upon I said block,

3.- Inyan, internal combustion engine, the

combinatidnj'with the cylinder of an engine,

of a valve casing thereon, a rolgtry valve arranged in, said casing, and a seat Within said casing, the working face of each section of said valve seat beln provided with alongitudinal groove, wit each Signed at New -York', in the county of New York, and State of New York, thi

RUDOLPH WEI-IR.

22nd day of May, A. D. 1917.

ivided valve section" of said valve seat being associated a

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