US1039504A - Starting device for internal-combustion engines. - Google Patents

Description

0. FRASGHINI. STARTING DEVICE FOR INTERNALCOMBUSTION ENGINES.

v APPLICATION FILED JUNE 16, 190B.

1,039,504. Patented Sept. 24, 1912.

0. FRASGHINI. STARTING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JUNE16,'1908. 1,039,504, Patented Sept. 24, 1912.

2 sums-731mm 2.

UNITED STATES PATENT orr cn.

GRESTE FRASC'HINI, OF MILAN, ITALY.

STARTING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent. Patented Sept; 24, 1912*.

Application filed. June 16, 1908. Serial No. 438,732,

To ZzZZ whom it may concern:

Be it known that I, ORESTE FRAsoHINI,

mechanical engineer, subject of the King of Italy, residing at TS'Via Monte Rosa, Milan,

means of compressed air supplied to each '1, occupies the proper cylinder at a time corresponding to the moment of explosion when the engine isrunning normally, and the invention has for its object the attaining of this result, in itself not new, by a simple and particularly efficient form of construction.

The invention is particularly set out in the accompanying claims which will now be described in detail in connection with the accompanying drawings illustrating a preferred embodiment of the same, in which drawings- Figure 1 is a front elevation partly in section of an engine embodying the invention; Fig; 2 is an end elevation; Fig. 3 a plan; and Fig. at a sectional detail on an enlarged scale.

A storage tank H, for compressed air, is supplied from any suitable source, as, for instance, a pump through the pipe m, an a feed pipe 9 leads from said tank by way of a manually operable valve e with a valve stem f to a rotary distributing valve 71. The hollow stem at of this valve serves as the cam shaft aprovided with cams a a a and a for operating the valves of the respective engine cylinders, l, 2, 3 and 4.

The valve casing is formed in four parts n M, n and if, provided with ports all in the same plane, leading byway of the pipes 0 c 0 and 0 past the check valves (Z (5 d and (Z*, to engine cylinders 1, 2,

3 and 4. The hollow valve stem n is provided with ports L, b Z1 and 7)" displaced respectively at an angle of 90 to each other.

The manner of operation is as follows: The engine being at a standstill, the piston of one of the cylinders, for instance, cylinder tar-ting position, and

registerso that as the driver pushes down on the valve stem opening the valve 6, that pressed air and the piston forced to the opposite end of the cylinder. In doing so the valve shaft being rotated, the port inthe part a and the partare closed and antributing valve stem, formed y said shaft, will be brought into registei with its port to supply the next cylinder with compressed air. Thus the compressed air is supplied in the engine is running and the cylinders ready to receive their explosive charge when the valve e is closed by the driver and the engine proceeds normallv.

present invention the valve shaft. a serves a double function, viz: to operate the fuel v valves of the cyllnders and also as the hollow valve stem of a rotary distributing valve to supplythe compressed air. to the respec- 80 tive cylinders in succession. The one element serving .to operate both sets of valves, the number of parts is not only reduced but also the danger of the parts getting out of whether the number of cylinders be increased or diminished, or whether there be a combined distributing valve and cam shaft shown.

What I claim and desire to secure by Letters Patent is 1. In an internal combustion engine, the

inlet, a rotary valve controlling the passage of the air through the air pipe, and a cam device carried by the rotary valve stem to actuate the fuel inlet valve.

combination, with a plurality of cylinders,

and valves controlling the fuel inlets there- 'the port in the part 91- and b will be in particular cylinder is charged with somother one of the ports in the hollow disproper sequence to the several cylinders until ?0 Itwill be observed that according tothe order or out of time with reference to each other is avoided. The invention is the same for each cylinder or allunitcd in one as combination, with a cylinder, and a valve actuate the 9 inlet, a compressed air pipe leading to. such 3. In an internal combustion engine, the 1 to, of a compressed air pipe, a rotary distributing valve communicating with said pipe, a pipe leading from said valve to each cylinder, and'a cam device carried by the rotary valve stem to actuate each of the fuel inlet valves.

4;. In an internal combustion engine, the

. combination, with a plurality of cylinders,

. the ports in said shaft and forming therewith a rotary distributing valve, and branch pipes leading from each of the ports of said distributing valves to one of the cylinders.

5. In an internal combustion engine, the combination, with a plurality of cylinders, and valves controlling the fuel inlets thereto, of a compressed air pipe, a tubular rotary shaft provided with cams to actuate the several fuel inletvalves, the interior of said shaft communicating with the air supply pipe and provided with laterally openand a check valve in each of the branch pipes. 4

6. In a starting device for internal combustion engines, the combination, with a plurality of cylinders, valves controlling the fuel inlets thereto, and a cam-shaft to 0perate the fuel inlet-valves in proper se quence, said cam-shaft being formed as a pipe for compressed air and provided with ports leading, one to the explosion chamber of each cylinder, said ports being controlled directly by the cam-shaft to open the airinlet portleading to that cylinder which is starting on the working stroke.

In testimony whereof I hereunto afiiX my signature in the presence of two witnesses.

ORESTE FRASCHINI.

Witnesses:

R. CARLO SALVOTE, MICHAEL Smsonarnn, Jr,

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of latents. Washington, 1).,6.

Images