US862377A - Explosive-engine. - Google Patents

Description

PATENTED AUG. 6, 1907.

F. W. BACON. EXPLOSIVE- ENGINE. APPLICATION FILED JUNE 15. 1900.

Hank WBQcn'.

Witt wows attain:

UNITED STATES PATENT OFFICE.

FRANK w. BACON, or OMAHA, NEBRASKA.

EXPLOSIVE-ENGINE Specification of Letterslatent.

Patented Aug. 6,. 1907.

Application filed June 15,1906. Serial No. 321,899.

- four cycle engines.

' shaft in the usual manner.

It is the object of my invention to provide in engines of the class mentioned a valve mechanism in combination with the inlet and exhaust passages and ports by which the incoming charge of air and oil before entering the cylinders is highly heated by the exhaust gases so that, with the ordinary spraying carbureter, kerosene or heavier fuel oils may be vaporized and used in the engine instead. of gasolene or other lighter and more expensive oils.

Constructions embodying my invention are shown in the accompanying-drawings in which Figure l. -is a sectional plan view of a pair of engine cylinders equipped with my vaporizing and valve mechanism, the section being partly on the plane of the lines ac -0c of Figs. 2 and 3 and partly on the line yy of said figsl; Fig.2 is a sectional-end elevation of the same, the section being on the plane of the line z-z of Fig. 1; Fig. 3 is a side elevation of the cylinders, partly in section on the line oo of Fig.2, Fig. 4 is a detail bottom plan of the cam redheads for the concentric exhaust and inlet valves; and Fig; 5 is a detail side elevation of the spring-seat for the inlet valve stem.

In the adaptation of my invention illustrated the same is shown .as applied to an engine of the vertical multiple-cylindertype having the cylinders cast in pairs and the cylinder heads and valve chambers -integral therewith. The cylinders 1 are surrounded by a water space 2 and jacket 3 extending to the lower limit of travel of the piston head, and are bolted on the flat 'top of a crank housing4, a portion of which is shown in Figs. 2 and 3. vThe half-time or cam shaft passes longitudinally through the'said crank housing' and is geared to be driven from the engine crank Adjacent the bottoin of the water jacket 3 the auxiliary exhaust ports 7 connect with the cylinders so that at the lower end of the stroke otthe pistons 3 the said ports are uncovered thereby. The said, ports 7 extend laterally from the cylinders, as shown in Fig.- .1, connecting-with the auxiliary exhaust valves 9 which open upwardly into the chamberslO below the screw plugs 11. The stems36of. said valves 9 extend downward through the screw-plug guides 37 and at-the lower end thereof are provided with spring-seats 38 which ar'e.en-

gaged by the springs 39 for holding the-valves .to their seats. The chambers 10 connect with a central exhaust chamber 12 as shown in Fig. 3 and at the center and upper partof the casing 18 of said chamber is connected the exhaust pipe 13. p

Adjacent the cylinder heads the combustion chambers 6 extend laterally from the cylinders above the exhaust chamber 12, as represented in Fig. 2. From the combustion chambers the cylindrical shells 14 extend downwardly intothe exhaust chamber 12 and near the bottom of said shells the passages 15 extend laterally to the outside of the exhaust chamber casing 1s. A U-shaped pipe 16 having a side outlet 17 is bolted to the exhaust chamber casing over the outlets of the passages 15, connecting the same as shown. At the upper ends of the shells 14 are-formed valve seats on which rest the inlet valve rings 19 which are screwed on' the tubular stems 20, said stems extending downwardly through the' bottoms of the shells 14, below which per 21 are formed therein communicating with the exhaust chamber 12.

' At the ports 21 the tubular-stems are reduced in size and pass out of the exhaust chambers through the screw plugs 22. Above the ports 21 the stems are provided with packing rings 23 which prevent leakage between the exhaust chamber and the annular chambers 24 formed between the shells 14 and the tubular stems 20. At the uppe end of, the tubular stems 20 are formed valve seats for the exhaust valves 25 of which the stems 26 extend down through the stems 20 and guides 32 therein, as shown. At" the lower end of the tubular stems 20 the' spring seats 27 arescrewed thereon, the springs 28 encircling the stems between the said seats and the screw plugs 22. The exhaust valve stems extend beyond the end of the tubular stems 20 and have Y screwed thereon the spring-seats 2 9,.the springs 30b0- tween said seats and the screw plugs 22 being of a diameter large enough to pass over the springs 28 and spring-seats 27. The spring seats 27 have the fingers 31 extending downwardly therefrom, as shown-in Figs. 2.

and 5, said fingers passing through openings in the seats 29 and terminating below saidseats 29' even with the ends of exhaust valve stems 26. l

The concentric inletand exhaust valvesand also'the auxiliary exhaust valves 9 are alined ah'ove'the axis of the cam shaft 5. and are operated therefrom as follows;

- The cam-rod guides 56 are secured on the flat'top of the crank housing 4 ;above thecam shaft by means of the forked retaini'ng bars 33" whichar secured to the'top. of the crank housing by the cap screws 34,. the forked ends of said retaining bars resting on the flanges of the guides as shown in Fig.3. Theguides-are held against lateral displacement by the dowel pins 35. The aux iliary exhaust valves are actuated by t e cams 40 engaging the rollers 41 which are carried by'theforked heads 42 on the cam rods 43 which extend up through has on the lower end thereofiorked head 46 having brackets a7 on the sides thereof between which and the main head are carried the rollers 48 which engage the earns 49.. The said head 46 has the guidefingers 5O thereon extending down over the'eam shaft as shown :in Figs. 2 and 3. On the cam shaft between the forks 0f the head 46 is-a cam 51 which is engaged by the roller 52 carried on the head 54of the cam rod 53 which passes up through the tubular cam rod'45 and engages the end of the exhaust valvestem 26. The head 54 of the cam rod 53 is of cylindrical form and the head 46 is bored out to receive the same. as shown by the bottom plan view thereof, Fig. 4, so that the inner 'head is guidedby the outer. In opening the inlet valves the upper endsof the tubular cam rods 45 engage the ends of the fingers 31 on the spring-seats'QQ, thereby raising the tubular stems 20 which carry-uppermitting the .same to. open.

Access to the combustion chamber above the con cnx tric'exhaust and inlet valves is provided by the screwstroke thereof, and closed after the pistons have covward therewith the exhaust valves 25 but without ered the ports 7 on the exliaust str'oke thereof During the suction and compression'strokes of the pistons said valves 9.remain closed. The cams 51 are set to open the exhaust valves 25 before the ports 7 are covered by the pistons onthe exhaust stroke thereof and to close said valves at the endxif said strokes. The cams 49 are set to operate the inlet valves during the siictionstroke of the pistons. I p v In the operation of the engine a carbureter of any desired form is connected with the outlet 17 of the U pipe 16 connecting with the angular inlet chambers 24. The incoming mixture. of air and oil spray from the carbureter in passing through said annularchambers 24 is subjected to an intense heat, as the exhaust gases in their escape pass around the shells 14 and through tbc' tubular stem-s 20 so that the chambers are heated both from the insideand outside thereof. Baflle plates 5'7 may be placed on the inner Wallsof the shells l4, shown, said plates serving the double purpose oi guiding the stems 20 and deflecting the incoming charge of air and oil spray to cause a more perfect circulation thereof between the heated inner and outer walls of illc chambers 24.

Now. having described my in,\'cnlion. what I claim and desire losecurc b v l,cllc1s lalent is:

1. In an explosive engine. an inlet valve having lur stem. nirexlinust valve positioned within so u tubuid tubular stent and controlling the passage of exhaust gases throughthe same. and means for actuating suid valves or the proper relative periods.

:2. In an explosive engine. an exhaust chamber positioned adjacent the combustion chamber of the engine cylinder. a shell extending from the eomluistion chamber into said exhaust chamber. an inlet valve 'havine a tubular stem extending through said shell and forming an annular chansber between the same and the shell. said valve controlling communication between the combustion chamber and said annular chamber. a passage connecting with said annular chamber for the admission thereto of combustible materials.

and an exhaust valve positioned within the said tubular stem and controlling" the escape of exhaust gases through the same into the exhaust chamber.

3;,In an explosive engine. an exhaust chamber. a shell extending into said chamber. a valve having a tubular stem extending tln'ough said shell and connecting: the combils- .tion chamber of the engine with said exhaust chamber.

there being. an annular chamber formedbetween said stemand shell and the said valve controlling coimnuniention between said annular chamber and the combustion chamber.

anda valve positionedxvithin said tubular stem'and controlling communication through the same between the comhustionchamber and the exhaust. chnmber.

4. in an explosive engine. concentric exhaust and inlet valves. the inlet valve encircling the exhaust valve and having'n tubular steni through which the exhaust passes. a shell inclosing-the tubular stem of the inlet valve and forniingnnannular chamber around the same. an exhaust chamber Slll'l'Olllldillg said shell. and ports in the tubular stem of the inlet valve connecting the passage through the same with the exhaust chamber.

5; In an explosive engine, concentric exhaust and inlet valves, the inlet valve having a' tubular stem throne-h which the exhaust passes. it shell surrounding said stem. an exhaust chamber :around said shell. ports connecting the passage through said stem with the exhaust clnnnber. an auxiliary exhaust port adapted to be opened by the on gine piston in one end of its stroke. and passages connecting said port and the exhaust chamber.

(i. In an explosive engine. an exhaust chamber. nport in the engine cylinder adapted to be uncovered by the piston atone end of the stroke thereof. a valveconlrolled passage connecting said port and the exhaust chamber. a shell disposed within said exhaust chamber. :1n inlet chamber within said shell having vulved connection with the engine cylinder combustion chamber. a iubuhir stem p: inc. through said inlet chamber; and means for passing :l portion of the exhaust gases through said tubulnr slcm.

In testimony whereof I have hereunto subscribed my name in the presence of two witnesses.

. 1 rnxxx \v. ram-ox.

Witnesses:

.l. L. Anus'riioxc. l). t).- PxnxI-ILL.

lOll

Images