US1023088A - Explosive-engine. - Google Patents

Description

J. W. MEAKER. EXPLOSIVE ENGINE.

. APPLIOATION FILED 11mm, 1910.

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Patented Apr. 9, 1912. s SHEETSSHEET 1.

COLUMBIA PLANOORAPH 20.. WASHINGTON, D. c.

J. W. MEAKER. EXPLOSIVE' ENGINE. APPLICATION FILED JUNE 9, 1910.

. Patented Apr. 9, 1912.

3 SHEETS-SHEET 2 J. W. MEAKER.

EXPLOSIVE ENGINE,

APPLICATION FILED JUNE 9, 1910. Q

Patented Apr. 9, 1912.

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' UNITED ES. PATENT, OFFICE.

JOHN W. ME-AKER, OF DETROIT, MICHIGAN.

EXPLOSIVE-ENGINE.

a specification, reference being had therein to the accompanying drawings.

This invention relates to explosive engines of the four-cycle type and more partlcularlyto an arrangement of the cylinder whereby the interior of the cylinder and piston and adjacent parts are thoroughly cooled and whereby an impulse is given to the piston rod on each down stroke,

The invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims.

Referring to the drawings, Figure l is a view in transverse section through the cylinder and adjacent portions of a motor that embodies features of the invention showing the position of the parts at the end of the up-stroke; Fig. 2 is a view of a motor showing a pair of coupled cylinders one 1n section and one in elevation; Fig. 3 1s a view of a modification of the motor.

In the drawings, a cylinder 1 that is open at both ends rests at itslower extremity on V a base 2 with crank case 3 in which a main shaft 4 is j ournaled. A sleeve 5 has a flange 6 on its lower open end which is reciprocated in a counterbored or enlarged portion 7 of the lower part of the cylinder, the body of the sleeve fitting the body of the cylinder and a tubular extension 8 sliding in i a corresponding reduced upper end 9 of the cylinder. Packing rings 10 on the flange 6 and similar members 11 on the extension 8 prevent leakage. A valve chamber .12 is formed on the upper portion of the cylinder with its interior in communication with the annular space formed above the upper face of the body of the sleeve and'around the ex tension 8. The lower valve chamber 13 is likewise formedon the cylinder so that its interior communicates with the annular space between the upper face of the flange 10 and the counterbored face 14 of the cylinder and around the sleeve 5. An intake port 15 in the upper chamber and a similar port 16 in the lower chamber are controlled by inlet valves 17 and 18 operated through any preferred mechanism, as -for example, spring pressed tappets 19 and 20 which are Specification of Letters Patent.

Patented Apr. 9, 1912.

Application filed June 9, 1910. Serial No. 565,908.

respectively reciprocated through the mei i dium of a cam shaft 21 driven in timed relation to the main shaft through suitable mechanism not shown herein.- Exhaust ports 22 and 23 in the respective chambers are similarly controlled by exhaust valves driven by suitable means, as for example, spring pressed tappets 24 and 25 recipro cated by the shaft 21. Each sleeve 5 is connected by a wrist pin 26 and a piston rod 27 to crank arms 28 of the main shaft in the usual manner. 2 Y

Any suitable ignition system is used for exploding the charges in thetwo annular spaces which form the compression chambers. Such means are not indicated and may be of any preferred form.

In operation the explosion in each annular space forming a compression chamber 1s followed by the scavenging, intake and compression in the usual four-cycle rotation, but the cycles alternate so that the sleeve is given an impulse at each of its downward strokes. This, in the two-cylinder arrangement such as indicated in Fig.- 2, ives the same torque to the shaft as in t e fouroylinderfour-cycle engine of conventional type. In addition to this advantage of space and weight and diminution of running parts, the open ended sleeve to which the main shaft is coupled is thoroughly cooled by the movement of air through its bore occasioned by the open ends. This likewise cools the cylinder which may be outwardly water jacketed as herein indicated or may have the usual radiating surface for air cooling.

While the construction just described is preferable it obviously maybe modified to give a single downward impulse to the piston on every other stroke as in the conventional four-cycle motor, and such arrange: ment of parts is shown in Fig. 3 wherein an open ended cylinder is secured on a crank case and base 30 and has its lower portion counterbored. An open ended sleeve 31is reciprocable in the upper portion of the cylinder 30 and has a flange 32 at its lower end engaging the counterbored portion. Packing rings 33 'on the upper portion of the sleeve and similar members 34 on the flange insure a tight joint and provide an annular compression chamber indicated at 35 into which ducts controlled by valve mechanism indicated at 36 open from the source of fuel supply. This particular form of construction has a further advantage in that the crank shaft 37 of the engine may be coupled by a piston rod 38 to a wrist pin 39 which engages the sleeve above the upper set of rings 83. As a result of this construction compression and ignition take place when the Wrist pin bearings are remote from the compression chamber and this eliminates liability to leakage which is one of the difficulties current in explosive engines of conventional type.

It may be desirable to regulate the amount of air circulation through the sleeve in order to allow the cylinder to be warmed to the most efficient degree. One method of accomplishing this is by placing a damper 40 in the upper end of the tubular sleeve (as indicated in Fig. 2) so arranged as to reduce to a greater or less extent the size of the sleeve opening. Any preferred form of shutter or damper may be employed for this purpose.

Obviously changes in the details of construction may be made without departing from the spirit of the invention and I do not care to limit myself to any particular form or arrangement of parts.

What I claim as my invention is 1. In an explosive engine, an open ended cylinder having an enlarged lower portion and a contracted upper portion, an open ended sleeve reoiprocable therein having portions that fit the corresponding portion of the cylinder, means for partially closing the bore of the sleeve, and a crank shaft operatively coupled to the sleeve.

2. In an explosive engine, an open ended cylinder having an enlarged lower portion and a contracted upper portion, an open ended sleeve reciprocable therein having portions that fit the corresponding portions of the cylinder, means for partially closing the bore of the sleeve, a valve chamber in communication with the annular space formed between the sleeve and cylinder, a crank shaft operatively connected to the sleeve, and intake and exhaust valves in the chamber operatively connected to the shaft to open in timed relation to the movement of the sleeve.

3. In an explosive engine, a closed base, open ended cylinders secured thereon, each cylinder having an enlarged lower portion and a contracted upper portion, an open ended sleeve reciprocable in each cylinder having portions that fit the corresponding portions of the cylinder, a crank shaft journaled in the base adjacent the cylinders and operatively coupled to each sleeve, and means for partially closing the bore of one or more of the sleeves.

In testimony whereof I afiix my signature in presence of two Witnesses.

JOHN W. MEAKER.

Witnesses:

O'r'ro F. BARTHEL, ANNA M. DORR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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