US1729271A

US1729271A - Internal-combustion engine

Info

Publication number: US1729271A
Application number: US175716A
Authority: US
Inventors: Noble M Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-03-16
Filing date: 1927-03-16
Publication date: 1929-09-24
Anticipated expiration: 1946-09-24

Description

Sept. 24, 1929. N. M. JOHNSON INTERNAL COMBUSTION ENGINE Filed March 16, 1927 rugs /1 A TTORNE Y.

Patented Sept. 24, 1,929

UNITED STATES NOBLE M. JOHNSON, OF DETROIT, MICHIGAN INTERNAL-COMBUSTION ENGINE l Application filed March 1G, 1927. Serial No. 175,716.

This invention relates to improven'ients in internal combustion engines.

It is an object of this invention to provide an internal combustion engine wherein cam 5 plates, mounted one on each side of a main casing in which cylinders are arranged, arev rotated by pistons in the cylinders thereby doing away with the usual crank shaft; and also to orovide openings through the cam plates so tat the latter are also utilized as intake and exhaust valves thereby eliminating all the usual valve gear.

IVith these and other objects in view which will be mentioned as the specification proceeds, a preferred embodiment of the invention is hereinafter more fully described with the aid of the accompanying drawings, in which: l

Figure 1 illustrates a side elevation of the U invention partly in section.

Figure 2 is a section on the line 2-2 of Figure 1. Figure 3 is a side view of one of the cam plates. l5 Figure 4 shows a side .view of one of the manifolds, and

Figure 5 is a partial end view of the invention. n

Referring to the drawings, 1 designates a i0 stationary main case having a central bearing 2 therethrough for a drive shaft 3, and an annular outer portion 4. Between the bearing 2 and the outer portion 4, and sometimes integral with both, are a plurality of cylinders 5. These cylinders extend inwards from the outer portion 4 and are connected to the bearings 2 by arms 6. In the inner ends of the cylinders are walls 7 which may be integral with the main casing, and on the periphery of the latter cylinder covers 8 are attached. 9 indicates spark plugs which extend into ,the cylinders. In each cylinder is a usual piston head 10 having a rod 11 extending inwardly therefrom through an opening in lits wall 7. The inner ends of the rod 11 have openings therethrough to' receive pins 12l which latter project beyond the sides of the casing between the arms 6. Mounted on the drive shaft 3, one on each side of the main casing and usually of slightly CFI smaller diameter than the latter, are two

cam plates

13 and 13a. In the inner side of these cam plates are

cam slots

14 and 14a usually substantially elliptical which receive the ends of the pin 12. ldenotes slides which are preferably provided around the ends of the pin 12. The cam plates are keyed or otherwise secured to the drive shaft 3 as by keys 16 and-16a. Through the sides of the cam plates are openings 17 and 1 7 a which register in turn 60 with each of the inlet and exhaust ports 18 and4 18L respectively in the sides of the cylinders towards their outer ends.

The outer surfaces of the Acam plates are supported by intake and exhaust manifolds 19 65 i and 19a respectively which are annular and have inwardly proJecting flanges 20 and 2Oa secured to the periphery ofthe casing. The manifolds also have inlet and

exhaust openings

21 and 21a respectively usually on their 70 outer surface, and through them ports 22 and 22a are provided which are positioned opposite the

ports

18 and 18a through the sides of the cylinders, so that as the cam plates turn combustible mixture passes from the intake manifold 19 through the ports 22, opening 17 and ports 18 into each cylinder in turn, and from the latter through the ports 18", opening 17"i and ports 22a into the exhaust manifold 19a. so

It is believed that the operation of the engine will be readily understood from the foref` going description, which briefly is as follows:

Combustible mixture is supplied to the intake manifold 19 through thev inlet 21. This 85 manifold has ports 22 through its inner surface, one opposite each of the cylinder inlet ports 18 but normally vseparated from the latter by the cam plate 13. The cam plate has. in the embodiment shown, one passage v17 there- 90 through so positioned that as the plate rotates each manifold port 22 in turn is in communication with its cylinder port 18. The action of each piston and cylinder unit is identical to that of any other four stroke engine. The explosivefstroke of each piston forces its rod l1 and pin 12 downwards thereby causing the

cam plates

13 and 13a to rotate. It will be noted that the centre lines of the cylinders are not radial with the centre line ofthe cam plates, though one side of each cylinder Wall may be radial thereto. The cam plates are so set on the drive shaft 3 that their openings 17 and 17 a are in such relative positions that Athe opening 17L connects each clinder exhaust port 1Sa with its exhaust manifold port 22 on the upstroke of the pistons following their Working strokes.

In the foregoing the simplest form of construction is shown and described, though obviously the cams may be so shaped that tWo or more explosive strokes Will occur during each revolution of thecam plates. In that case the number of openings 17 and 17a must equal the number of Working strokes per revolution of the cam plates.

While in the foregoing the preferred construction has been described and shown, it is understood that modifications may be made therein provided they fall 'Within the scope of the appended claims.

What I claim is 1. In an internal combustion engine', the combination of a main casing, a shaft revolvably supportedtherein, cylinders in said casing having` inlet and exhaust ports therein, pistons in said cylinders, piston rods conneeted to said pistons, plates fixed on said shaft having cam slots therein, pins through said piston rods taking into said cam slots Which latter are so shaped that'said plates are forced through part of a revolution on each Working stroke of each piston, one side of each plate bearing against one set of cylinder ports, intake and exhaust connections against which the sides of said plates remote from said cylinders bear, and said plates having passages therethrough by Which each cylinder inlet or exhaust port is connected to each of the inlet and exhaust connections in turn as said plates turn.

2. In an internal combustion engine, the combination' of la main casing, a shaft rotatably mounted'therein, cylinders substantially radially arranged in said casing, pistons in said cylinders, piston rods connected to said pistons plates fixed-on said shaft having substantially elliptical .i cam slots therein, pins through'the inner ends of said piston rods extending'into said cam slots so that the movement of said 4'pistons is adapted to rotate said plates, an annular intake manifold and an annular exhaust manifold supported by said casing, said cylinders having inlet and exhaust ports therein, said'manifolds having openings, and 'said plates having' passages therethrough adapted to'conneet each cylinder inletport and each cylinder exhaust port in turn 4vvith an intake or exhaust manifold opening.

lregister with `inlet and exhaust ports in said manifolds and said cylinders, and said cam members each having a cam groove on adjacent faces of the cam members and adapted to cooperate with pins carried by said pistons for driving said shaft.

. NOBLE M. JOHNSON.