US968725A

US968725A - Explosive-engine.

Info

Publication number: US968725A
Application number: US54095910A
Authority: US
Inventors: Jay F Woolf
Original assignee: ELLIS J WOOLF
Current assignee: ELLIS J WOOLF
Priority date: 1910-01-31
Filing date: 1910-01-31
Publication date: 1910-08-30
Anticipated expiration: 1927-08-30

Description

J. F. WOOLF. EXPLOSIVE ENGINE.

APPLICATION FILED JAN.31,1910;

Patentd Aug". 30,1910.

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J. I. WOOLF. EXPLOSIVE ENGINE. APPLICATION FILED JAN.31,1910.

Patented Aug. 30, 1910.

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JAY r. WOOLE, or MINNEAPOLIS, MINNESOTA, ASSIGNOR or WOOLF, oi" MINNEAPOLIS, MINNESOTA.

ONE-HALF T ELLIS .r.

nxPLosIvE-Enemn Specification of Letters Patent. Patented Aug, 36), 193mg Application riled January 31, 1910. Serial No. 540,959.

'l '0 all whom it may concern:

Be it known that LJAY F. Woom, 'a citizen of the United States, residing at Minnea oils, in the county of Hennepin and State 0? Minnesota, have invented certain new and useful Improvements in Explosive-Engines,

- of which the following is a specification.

My invention relates to explosive engines,

and its principal objects are to improve the means for introducing the charging mixture to the compression space and for conducting it therefrom to the explosion chamber. In furtherance of these objects I support in the interior of the lower portion of the cylinder circular partitions that provide an intermediate annular inlet port which is controlled by-a ring suction-valve arranged to be lifted from its seat by the suction provided in the compression space by the outward movement of the piston. A sleeve slidable on and with .the piston and-provided with ports is reciprocated by the piston movements to alternately open and close an exhaust port and a passage-way leading from. the compression chambento the explosion chamber, and to and from contact with the suction-valve.

My improvements are illustrated in the accompanying drawings, in which Figure 1' is a central vertical section of an explosive engine embodying my improvements, showing the piston at the limit of its downward movement and showing both the charging and exhaust ports 0pen and the inlet port to the compression chamber closed. Fig. 2 is a similar view of portions of the engine casing, piston, sleeve, and suctionvalve, the latter two devices, which constitulle the controlling valves, being shown in their closed positions; that is, in the positime they occup when the piston has started on its upward stroke and has moved only far enough to lift the sleeve to position to close the sleeve'ports and the exhaust outlet,

but not far enough to produce the amount of suction required to lift the suction-valve from its seat on the inletport. Fig. 3 is a similar view showing the piston at the limit of its outward stroke and the sleeve ports and exhaust port closed (as in Fig. 2) but showing the suction-valve lifted from its seat by the suction created in the compression chamber by the upward movement of the piston to permit the gas to flow through the inlet into the compression space. Fig. 4

shows a central vertical section of the cylinder, the sleeve and suction-valve 1n the pos tlons shown-1n Fig. 1. Fig. 5 shows a horizontal section on the plane of the broken line ww of Fig. 4. Fig. 6 is a similar section on the line ww of Fig. 4, showing the construction of the inlet port. F ig. 7 is a vertical section of the cylinder intended to show particularly the ribs for guiding the sleeve and supporting the;-.annular structure which provides the inletport. Fig. 8 shows an elevationof the sleeve detached. Andv Fig. 9 is a horizontal section on the plane of the line 22 of Fig.8 showing the-construc-v tion of the portion of the sleeve in which the ports are provided. i

In the

drawings

1, 2, 3, and 4, respectively, designate the castings constituting a suit able engine casing. The

members

1 and 2 are joined to the widened lower portion 5 of the cylindrical member 3 to form the crank case and main compression chamber 6; the upper member 4 provides the explosion chamber 7 and has the usual water-jacket 8 surrounding it and an annular space 9 constituting an exhaust passageway outside the water-jzugket and a discharge outlet 10'connected with the space 9. The outer wall of the member 4 extends a suitable distance below the inner ormain base 11 of'that member and seats upon and is secured to an outward flange 12 on the top of the cylinder 3,

thus providing a circular space 13 between the top of the cylinder and the base'll of the member-4 which serves as the exhaust port or chamber. N

In the lower portion of the cylinder 3 andpreferably cast therewith-and supported by ribs l leformed at intervals on the cylinder walls are upright

concentric partition walls

15 and 16, which are separated by an intermediate annular space 17 that is open at the top but closed at the bottom by a base 18 uniting the lower ends of the two partition walls. This space 17 is in communication with an admission opening 19 formed in one. side of the cylinder and constitutes the port through which the gas may pass on its way to the compression chamber.

Within the cylinder is a loose and slidable sleeve 20, the inner surface of which is in vertical alinernent with the inner face of the partition ,wall 15. The reciprocatory move,

primary outlet of the explosion no merits of the sleeve are guided at its lower end by lugs 21 formed on its sides'andwhic'ht contact with portions of the cylinder ribs 14,

and are guided at its upper end by the contact of an outward rim 22 thereon with the face of an inward rim 23 formed around the upper end'of the cylinder: The downward movement of the .sleeve' may be limited by the seating on the cylinder rim 23 of a flange 24 formed on the end of the sleeve; and its upward movement is limited by contact of its end with the base 11 of-the casting 4.

The piston body- 25 is provided with theusual packing-rings 26 on its upper portion and is arran ed 1n frictional contact-with the-sleeve an the port wall by which it is guided. The piston'is' connected by a rod 27 in the usual way to the crank-pin 28 of Y the crank-shaft 29 and the usual counterbal ance 30 for the crank is provided. The pis ton consists of a cylindrical body open at the bottom and closedat the top by a head 31 ered by the piston-head when both the piston and sleeve are in .their lowermost posi-,

tions (Fi .1), and to be closed by contact with the ace of the rim- 23 when the sleeve is in its uppermost position (Figs. 2 and 3). In theformer position thesleeve ports 32 p'ermit'the com ressed gas in the com ression chamber which as a whole inc udes the chamber 6, the space within the piston andthe passage-way 33) to flow through the passage-way 33 to the explosion chamber, its course being indicated by the ar-"" rows a 111- Fig. 1.

- .in Fig. 3, the course being indicated by the The inlet port 17 is controlled by a ring suction-valve or check-valve 34 that loosely encircles the piston and seats on the

partition members

15 and 16 and is adapted to be lifted by the suction produced-in the compression spaces by the upward movement of the piston to allow the gas to flow through the port 17 into the passage-way 33 and downward into the chamber 6, as illustrated arrow 6. The valve 34: may be arranged to seat itself by gravity, but preferably it is forced to its seat by the sleeve 20. when the latter is moved downward by the downstroke of the piston; that is, from the position shown in Fig. 3 to that shownin Fig. 1.

In operation, starting with the parts in the positions shown in Fig. 1, the first eflt'ect of the upward movement of the piston is to contact with t slow that lift the sleeve from the position shown in Fig. 1 to that shown in Fig. 2, thereby clos- 13 and-fre'ein the suction-valve 34 cm e sleeve. Then, during the further upward movementof the piston the ing the sleeve ports 32 and the exhaust fport suction created in the compression chamber and passage-way 33 lifts the suction-valve from its seat and draws a fresh su Ply the charging mixture through the inlet 19 into the chamber or port- 17 and thence through the passage-way33 downward into the mam compression chamber, as indicated in Fig. 3.

When the charge in theexplosion (F 7 has been exploded (which is donein the usual way) and the piston is started on its downward or working stroke, its frictional contact with. the sleeve 20 moves that mem I her along with it, from the position shown in Fig. 3 to that shown'in Figs. 1 and 4, and

thereby seats the suction-valve on the inlet port 17, and thereupon compression of the,

gas in the compression cham continues until the piston nears the lower limit of its stroke. The sleeve havin been thus loweredbelow the plane of, the exhaust port 13, as soon as the piston-head passes be ort the exhaust begins and'continues (in icated by'the arrows 0) untilthe piston again starts on its return stroke. In

the meantime, and before the exhaust is com-- er begins and pleted, thepiston head .will have passed be]- low the sleeve ports 32 and the gas under V pressure in the passage-way 33 will have begun to flow therefrom through the ports 32 inward and u ward .into the explosion chamber, as -ind1cated by the arrows a. When the piston reaches the lower limit of its thrust, as shown in Fig. 1, the cycle of.

actions will have been completed.

.Having described my invention, what I claim and desire to secure by Letters Patentis-z.

1. In an explosive engine, the cpmbination with casing members providing the compression and explosion chambers and an in-. termediate cylinder having an interior circular structure forming an annular inlet portin communication with the com resthe suction in said chamber, a piston within i the cylinder in position to' separate the comression chamber fromthe explosion chamizo,

er, and a sleeve on the piston ar anged to be reciprocated by the down stroke of the piston to seat said valve and by the "up stroke to release it, substantially as set forth 2; In an explosive engine, the combination with casing members roviding the compres sion and explosion c ambers and anintermediate cylinder having an interior circular structure forming an annular inlet port in communication with the compression cham- 11-5 sion chamber, of a ring suction-valve a apt- I ed to be'lifted" from its seat on said port by necting them, supported within the cylinder I the inlet port adapted'to be lifted ber, of a ring suction-valve adapted to be lifted from its seat on said port by the suction in said chamber, cylinder in position to separate the compres sion chamber from the explosion chamber, and a sleeve on the piston in proximity to the valve and slidable on and with thepiston a limited distance and serving on its downward movement to seat the valve and at the limit of its upward movement to stop the upward movement of the valve, substantially as set forth.

3. In an explosive" engine, the combination with casing members forming compression and explosion chambers, of a cylinder conconcentric circular partitions and separated from each other by an annular spac openat the top and closed at. the bottom onstituting an inlet port, the outer partition being separated from the cylinder by a space which connects the inlet port with the compression chamber, a ring suction-valve for the inlet port adapted to-be lifted'by suction, apiston within the cylinder in position to separate the compression chamber from the explosionchamber, and a sleeve thereon arranged to be reciprocated by the piston to alternately seat and release 'saidvalve, substantially .as set forth.

4:. In an explosive engine, the combination members tormmg compresslonwith casing and explosion chambers of a cylinder connecting them, concentricbircular partitionssupported within the cylinder and separated from each other by an annular space open at the; top and closed at the bottom constitutlP iilll inlet port, the outer partition being separated from the cylinder by a space which connects the inlet port with the compression chamber, a ring suction-valve for by suction, a piston within the cylinder and casing in position to separate the compression chamber from the explosion chamber, a sleeve slidable on and with the piston a limiteddis-v tance and serving on its downward move l p the cylinder by a ment to seat the valve and at the limit of its upward movement to stop the upward movement of the valve, substantially as set forth.

5. In an explosive engine, the combination with casing members forming compression and explosion chambers, and a cylinder con; necting such members but separated from a portion of the base of the explosion chamber member by acircular space constituting an exhaust port, concentric circular partitions in the lower pbrtion of the cylinder separated from each other by an annular space open at the top and closed at the bottom constituting an inlet port and separated from space which connects said inlet port with the compression chamber; of a ring suctionvalve for said inlet port a piston within the compression of the piston,

adapted tobelifted by suction, a piston Within the cylinder and casing inposition to separate the compression chamber from the explosion chamber, a sleeve slidable on and with thepiston for seating the ring check-valve and alternately. opening and closing the exhaustport, thesleeve being separated from the cylinder by a space connected withthe compression chamber and portion of the base of the explosion chamber spacewonstitutmg an member by a circular exhaust port, interior ribs extending along the cylinder walls and an interior structure supported by the ribs and forming an annu; lar inlet port to the compression chamber, of a piston within the cylinder and casing in position to separate the compression chamber from the. explosion chamber, a sleeve guided by said cylinder ribs and arranged on and slidable on and with the piston to positions to exhaust port and having ports past which the piston head reciprocates, and which serve, when the piston is near the end of its inward stroke, as ports for connecting the chamber with the explosion chamber, and a ring suction-valve for said inlet port adapted to be lifted by the piston suction during its outward stroke and tobe seated by the sleeve during the inward stroke substantially as set forth.

7. In an explosive engine, the combinationwith casing members forming compression and explosion chambers, and a cylinder. connecting such members but separated from a portion ofthe base of the explosion chamber member by a circular space constitutingan exhaust port, a rim projecting; inwardly from the top of thecylinder, interior ribs at intervals extending along the cylinder walls from the rim to thebase and concentric circular partition walls united at the bottom and supported by the ribs in the lower por tion of the cylinder, the annular 'space between said partition walls constituting an alternately open and close the inlet port to the compression chamber, of a a piston within the cyllnder and casing in osition to separate the compression cham er from the explosion chamber, a sleeve guided by said cylinder ribs and rim and arranged on and slidable on having ports past perportion e exploslon and with the piston and which. the piston head .re-' ciprocates and having a projection for alward stroke to connect the compression chamber with the explosion chamber, and a ring suction valve held to its seat on said inlet port by the sleeve on the downward movement of the piston and lifted to .contact with said sleeve by suction on the upward movement of the iston, whereby the piston movements contro in proper sequence the inlet port tothe compression chamber, the flow of gas from the latter through the sleeve ports to the-explosion chamber, and

the discharge the exhaust outlet, substan- I name to this specification. in the presence of 15 two subscribing witnesses'this 20th day of t January, 1910.

JAY F. XVOOLF. Witnesses:

CHAS. H. DIXON, J NO. D. FARRAND.