US1165841A - Valve-operating mechanism for internal-combustion engines. - Google Patents

Description

.l. e. ems. VALVE OPERATING MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JUN 24, 1914.

1 165,841 I Patented Bea 28, 1915.

3 SHEETS-SHEET WITNESSES: INVENTOR;

/ ATTORNEY.

L'G. BUIS. VALVE OPERATING MECHAN|SM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED IUNEZ'I, I9I4.

Patentd Dec. 28, 1915.

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APPLICATION HLED JUNE 24. I914.

Patented Dec. 28, 1915.

3SHEETSSHEET 3.

,fiwA TTORNE Y.

wmvissss JAMES G. BUIS, OE COATESVILLE, INDIANA.

VALVE-OPERATING MECHANISM FOR INTERNALCQMBUSTION- ENGINES.

Specification of Letters Patent.

Patented Dec. 28,1915.

Application filed June 24, 1914. Serial No. 847,165.

To all whom it may concern Be it known that I, Janus G. BUIs, citizen of the United States, residing atCoatesville, in the county of Hendricks and State of Indiana, have invented certain new and useful Improvements in Valve-Operating. vMechanism for lnternal Combustion Engines, of which the following is a specification.

My invention is designed as an improvementover a structure previously conceived by me and described in an application for Letters Patent dated Oct; 19, 1912, bearing Serial #726,742.

v As'its primary object, the present invention aims to provide an improved reciprocable valve, so arranged relatively to the enine crank shaft as to be actuated thereb said valve operating within an auxiliary cylinder open to the main or Working cylinder ofthe engine, the intake exhaust ports being alternately opened and closed by movement of said valve to provide for the proper cycle of operation incident to the use of an internal combustion engine of the four cycle-type.

The invention as a further object contemplates means, such in its, nature as to be driven directly by the engine shaft, said means reciprocating the valve, said valve in turn-being so timed as to admit a fresh charge to theworking. cylinder at alternate strokes of the engine pistonv The above and additional objects are accomplished by such means as are illustrated in their preferred embodiment in the .acconipanying drawings, described inthe follow ing specification and then more particularly pointed'out in the claims which are appended hereto and forni a part of this application. I

In describing niyinvention in detail reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which r Figure 1 isga top plan view of an internal combustion engine constructed in accordance with the present invention; Fig. 2 is a sectionon the line of Fig. 1 Fig. 3 is a fragmentary. section of one of the auxiliary I cylinders, the valve operable therein being shown in a position whereby both the fuel and eXhaustgjphaesare closed;' Fig. l is a view s imilar'to Fig.3,the valve being shown in aposition Whereby'the exhaust pipe is open to the working cylinder; Fig. 5 is a section on the line 55 of Fig. 1; Fig. (i is an edge view ofthe cam; Fig. 7 is a vertical section of the valve casing or auxiliary cylinder, looking toward the fuel intake and exhaust pipes; Fig. 8 is an elevation of one of the valves; and Fig. 9 is a section on the line 99 of Fig. 8.

7 Before proceeding with the description of the. drawings, I desire to call particular attention to the fact that while I have evolved and shownn'iy invention as being employed in connection with the stationary engine of the twin cylinder type, the same may be readily utilized, if desired, in connection with a portable engine of the single cylinder yP Referring now to thedrazvings by numerals, 1 designates as an entirety the main or working cylinder of the engine, said cylinder 'having'directly associated therewith a piston 2, piston rod 3, crank shaft 4 and igniter. 5, the. detail construction or formatl0I1 0f '\\'l1iCli may be varied or i'nodified as desired, said elements in no way forming a feature of the present invention; they being.

illustrated only to convey the idea in mind. Formed separately or integral, (as shown) with the cylinder 1 is an auxiliary cylinder 6, said cylinder being provided with a water jacket 7 and removable- \llllClLtF-lltild 8. and having attached thereto. preferably in spaced relation as showiiqan intake pipe 9 and exhaust pipe 10 said two pipes being disposed respectively below and above. the

' horizontal planc of a port 11 communicating the interior of cvlindcr i with the work-' 'ing cylinder 1. saidport .ll beingopcn to thelattcr cylinder at a point adjacent its upper end. I

\Vithiii cylinder ('1 and extending parallel with crank shaft 4 is an auxiliary or valve opcratingshaft 1'3. said shafthaving mount ed thereupon a rain device designated as anv entirety by the" numeral lIL-thc working Surface ofthc said (Hill being so formed as to'operate upon a l cll'criink'H in a manner much the same asthe rain device disclosed in my previous application acts upon thi crank ll as at 15 is a valve piston it; the opposite end of which'is pivoted as at 17 within an opening 18 in thc base of a reciprocablccylindrical valve member 1!) which. in the absence of a better term will be hereinafter referred to as a piston-valve, The

bell crank -shown therein. livoted to hell bore of the piston valve '19 is constricted at a point intermediate its ends as at 20, the exteriorsurface of the said constricted portion being annular-1y grooved as indicated at 21, said groove, forming, in one position of\ the valve, the intake passage way and in another position, the exhaust passage way of the engine. Packing rings22 embrace the piston-valve as shown. Attached as at 23 to the cylinder head 8 is a helical spring 28 may be utilized to transmlt motion to :the

shaft 12, from the crank shaft 4, saicl sprockets however, being such in size, as to rotate shaft 12 but once, while crank shaft 4 slde of the engine linder with itsaxis is making two complete revolutions.-

, The cycle of operation is as follows: When i .the parts are in the position shown in Fig. 2,

the piston is moving downwardly and taking' the charge from the fuel pipe around the annular groovein valve 19. At that time lever 14, see Fig. 5, is traveling along the left-hand bend of the flange on cam-13.

By the time the charging stroke of the piston is ended, the lever 14 Will reach the straight portion of the cam flange. -That brings the valve in the position shown in Fig. 3 where everything is closed. The lever continues to travel on the straight portion of the cam flange during both the compression stroke and the explosion or power stroke of the piston and, therefore, during those two ,cycles', the valve closes the fuel and exhaust pipes, as shown in Fig. 3. On the exhaust stroke, the lever 14 travels-along the rightmoves the valve up to its highest position,

hand bend B, shown in Fig. '5, and that v as shown in Fig. 4, so as to, uncoverthe exhaust pipe, thus permitting the burnt or exhaust gases to escape.

From the foregoing, taken in connection with the accompanying drawings it is apparent that the operation of piston valve 19 s so timed as to move annular roove or passage way 21 into registration with intake pipe 9 and exhaust pipe 10 at each alternate stroke of working piston 2; that the spring 24 acts only as a cushion to relieve the piston 19 of the shock or-jolt that would otherwise be apparent by reason of. its sudden movement; and that by the use of the valve mechanism above described, a single port, namely 11-, is utilized to admit and exhaust both-the 1 of the engine.

fresh and spent gases incident to the use In reduction to. practice,'I have found that the; form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is.

the most efficient and practical; yetrealiz- .ing that the conditions concurrent with the adoption of my device will necessarily vary, I 'deslre to emphasize the fact that various minor changes in details of construction, proportmn and arrangement of arts may b resorted to, when required, wit out sacrifi parallel to the axis 0 said engine cylinder :1 p ston like valve operating within 511i auX1llflIy CyliI1d6l', a spring attached at n end to said piston valve and at its opposite end to the cylinder top to cushion movement of the valve, a valve operating shaft, a cam device mounted on said shaft and provided with an irregular peripheral flange a lever I of the bell crank type mounted in t e crank case of the, engine, said lever being provided between the bell crank and the valve like piston to control movement of said valve,

with a bifurcated terminal arranged to straddle the flange aforesaid, a connection and a means to rotate said valve-operating shaft.

2. The combination with an ex losive en gine, of valvemechanism there or includm an aux liary cylinder mounted at one side of the engine c linder withits axis parallel to-the axis 0 said engine cylinder,

a piston like valve operatin within said auxiliary.cylinder-to control t eintake and the exhaust of the engine, and a single helical springafiixed at one end to'the'c linder g JAMES G. BUIS.- Witnesses: I

JOHN E. HICKS,

FRANK Amvonn.

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