US1222115A - Piston-valve. - Google Patents

Description

W. H. MCINTYRBa PISTON VALVE.

APPUCATXUN FILED JAN- 01 19141 RENEWED JUNE 2| 1,222,115. Patented Apr. 10, 1917.

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W. H. McINTYRE, PISTON VALVE.

APPLICATION FILED JAN. 10, 1914 RENEWED JUNE 2. 1916.

1,222,115. Patented Apr. 10,1917.

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PISTON VALVE.

APPLHIATIW FILED JAN. 10. 19m. RENEWED JUNE 2.1916.

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UNITED STATES PATENT OFFICE.

WILLIAM n. McINTYRE, or TOLEDO, OHIO, ass'renon'or one-FOURTH T0 raAnx M.

SALA AND rounurwnn'rrn'ms T0 GEORGE w. CORE.

PISTON-VALVE.

Specification of Letters Patent.

Patented Apr. 10, 1917.

Application filed January 10, 1914, Serial No. 811,387. Renewed June '2, 1916. Serial No. 101,391.

To all whom it may concern:

Be itknown that I, WILLIAM'H. MCIN- TYRE, a citizen of the United States, residing at Toledo, county of Lucas, and State of Ohio, have invented new and useful Improvements in Piston-Valves, of which the following is a specification.

My invention relates to an improvement in explosive gas engines, and has to do more particularly with the valve mechanism forv controlling the intake and exhaust, it being adapted to any of the present types of explosive gas engines. By it I am enabled to do away with much of the usual paraphernalia which goes with explosive engines, such as springs, lifts, cams, sleeves, and other accessories which easily get out of working order and decrease the life and efiiciency of a machine of this sort.

The desider'atum is to provide a motor that will be noiseless; and another important feature of the invention resides in confining the entire explosive charge directly over the end of the piston.

In the accompanying drawings 1- Figure 1 is a transverse vertical sectipnal View, Y

Fig. 2 is a sectional view taken at right angles to'Fig. 1, i

Fig. 3 is a top plan view of one unit, and

Fig. 4 is an end elevation of the lower end of the engine with the faceplate removed in order to show the gearing.

A, represents the bed of the engine, which may be made of angle-iron, and to which the D ment formln an intake directly t'o'the excrank-case 1 is holtedas at 2, 2.

Erected upon each crankase lsia set otthree cylinders, namely the mainfiexplosion cylinder 3 in the center, and the VnlV-Cyl:.

inders 4, and 5, on either side thereof, the three preferably being cast together and held on the crankcase by holtsto, (i. The

main(piston 7 is fitted to thebore of cyl'huler 3, an from its Wrist-pin 8 the connecting rod 9 extends to the crank 10 on the main drive-shaft 11, which latter is journaled in boxes 12, 12, in the crank-case.

The explosion chamber 13 is formed at the outer end of the main piston 7, and

spark-plug 14 is tapped thereinto for ignit ing the charge.

Cast on the sides of the main cylinderare 'the valve-cylinders 4 and 5 with the usual water-jackets '15, 15, therebetween. Fitted to the bores of the cylinders 1 and 5' are Through the valves 16 and 17, the tapering orts 25 and 26 are formed respectively, the ormer'conimunicating at its larger end with the exhaust 27 through the port 28,

and the latter, namely the intake 29, with the large! end of (port 26, and the smaller end with the port 30.

" Thevalves 16 and 17 are packed at either end with compression-rings 31 to prevent the escape of compression.

A balance-Wheel 32 is keyed to the drivel shaft 11 in the usual manner.

. Qn the intake-side, theport 26 througli" which the carburetor charge is'admitted can he held [open for the entire length of the suction-stroke, the engine illustrated being a four cycle engine; Alsothe exhaust port can be held open the entire length of the exhaust-stroke. In operation the intake-port 30 starts to open on the last part of the outward stroke of the valve 17, the port'26 remaining open while the crank 20' is traveling across the outer part of its circle, holding the port 30 open while the main piston 7 makes the en-i 1 tire travel of the suction-stroke, thus bring" ing parts 30, 26, and intake 29 into alineplosion-cham er 13, which alinement is maintained during the entire suction-stroke. The port 28 on the exhaust side is opened on the outward stroke of the'exhaust-valve 16,

1S Open by the h fit aidvantage of the travel of the'crank-sha 20 across the outer circle, ports 27, 25 and 28 being held open during the entire exhaust f 1,

stroke of the main piston 7, bringing ports 27, 25 and 28. into al'inement, forming a direct outlet for the exh t which alinement is maintained during the entire exhaust stroke.

As shown in Fig. 1, intake ports 30,1

and 29 are open and: held open duringtheentire quarter outward turn of crank- 21T Y whlle the driving or piston-shaft 11 is mak--,

ing a rapid downward entire suction strolnenl In other words, the timing feature of this 6111111 0 v while the side-shaft is varying only sevensixteenths of an inch in traveling across its outer upward circle turn.

In this way, a perfect valve action is provided as the intake ports are open during the entire length of the suction stroke, and the exhaust ports during the entire len h of the exhaust stroke, and opened mechanically, it gives an absolute positive valve action and cleans all burnt gases from the cylinder; andwhen the ports 28 and 30 are closed, the charge of pure gas is compressed by the piston 7 into the compression chamber 13 at the outer end thereof, thus giving the motor the advantage of the entire explosion-and concentration of power and gas at the outer end of the piston.

In this manner I am enabled to do away with cams, springs, tappets, valve-cages, and camshafts, and by so doing provide a practically noiseless motor which dispenses with all parts that are most liable to wear out, lose power and cause trouble.

At the same time, by my invention I provide a motor, which, while not liable to get out of order, is, nevertheless, capable of easy repair by any mechanic.

I claunz- In an explosive gas engine, the combination of an explosion cylinder, and cylindrical valve-chambers having communicating ports, intake and exhaust ports in alinement with said communicating ports, a piston in the explosion cylinder, cylindrical valves fitted valves having ports extendin directly therethrough, a main crank-sha valve-cranks, said cranks geared to said main crank-shaft in a ratio of two to one, connecting-rods extending from the cranks to the piston and valves, and the cranks so arranged with respect to one another that the port of each valve is in registry withthe corresponding ports when its crank is passing dead center, and when the main crank-shaft is off dead center.

In witness whereof I have hereunto signed my name in the presence of the attesting witnesses hereto, t A. D. 1913.

W. H. MOINTYRE.

Attestin witnesses F. r SALA, N. J. LYNCH.

to the valve-chambers, sa'id is 3rd day of December,

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