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Piston-guiding means

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Publication number
US1769375A
US1769375A US68117923A US1769375A US 1769375 A US1769375 A US 1769375A US 68117923 A US68117923 A US 68117923A US 1769375 A US1769375 A US 1769375A
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Prior art keywords
piston
rod
means
cylinder
yoke
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Expired - Lifetime
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John C Leary
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John C Leary
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C5/00Crossheads; Constructions of connecting-rod heads or piston-rod connections rigid with crossheads
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18056Rotary to or from reciprocating or oscillating
    • Y10T74/18208Crank, pitman, and slide

Description

July l, 1930. J. c. L ARY a PISTON GUIDING MEANS- Filed Dec. 17, 1923 2 Sheets-Sheet 1 III, l-IIIII V INVENTOR. JCZIHRK;

- ATTORNEY.

July l, 1930. y

2 Sheets-Sheet 2 I J. LEARYV PISTON` GUIDING MEANS INVENTOR. J C'. &mn

&gd/104105) ATTORNEY Patented July 1930 WWASTA S.

;PATNT ow-;e V

JOHN c. LEA Y; Q sANFRAncIsco, CALFO IA PISON-GUIDINGMEANS.

Application filed ,December 17, 1923. i Serial No. 6315179.

My invention relatesto aimeans' for'preventing pston slap in an internal combustion engine i particularly i during the power stroke.

An object of the invention is to provide an internal combustion engine in which a pisten and crank are directly connected by a c0n-'` necting rod, with means incorporated with the pisten and cooperating'with means provided in the crank case tor preventing rocking of the piston and the attendant deletei rious effects.

the foregoing, will be set Orth in the follow-' ing description of the preferred form of my invention which is illustrated in the drawingsaccompanying and forming part of the specfication. It is to beunderstood that I do not limit myself to the showing made by the said drawings and description, as I may adopt variations of the preferred form with-' in the scope of my invention as set forth'in the claims.

Referring to said drawings:

Figure `l is a longitudinal sectional view ot' an engine equipped with the means of my invention. r

Fgure 2 is a View similar to. that of Figure l showing a modified form of the means.

As is well known, the pisten and cylinder of an internal combustion engine of the usual type are subjected to considerable frictional wear on one sidedue to the rocking of the pisten during the explosion stroke. This 5 rocking is due to the fact that the connecting rod is angularly disposed with respect to the axis of the cylinder during the working' stroke, and, theretore, eXerts a transversely acting thrust against the cylinder wall through the piston at the side away from 'to move in the proper path even though the .s

which the connecting rod moves during the i first half ofsaid Stroka Many attempts r have here'tofore heenmade to remedy this objectionable feature, but the majority of such attempts, in accompl ishing thedesire d end, 5 have more or less impaired the' efiiciency of the enginef In accordance,-however, with my inventionthe objectionable side. play of the pisten isnot only elninated but theoper atingefliciency of the engine is fully preserved. a p V Briefiy expressed, themeansofmy invention in the preferred emloodiment comprises a pisten having incorporated therewith a ri-gid .yoke` which 'extends' longitudinally si', a

thereof and encirclesthe connecting rod and crankf pin. Cooperating guide members` are provided on the yoke and crank case which q serve to guide the yoke for movement parallel to theaXis of the cylinder during' the reciprocation of the piston and thereby prevent rocking of the pisten; 'Means are a lso pro- Vided 'or supplementing the' guiding action of: theguide members and causing the. piston side of'the pisten and cylinder have become i 'A detailed description follows 1- i As hereinbefore stated the means of my invention is adapted. for use? in connection with .an internal combustion engine in whichthe crank andpiston are directly connected by. a oonnecting rod, Accordingly, in the drawings'theengine 4 is provided with a piston 5 which is mounted 'tor reciprocation in a cylinder 6-and is operatively connected to 'the crank shaft 7 by means ofaconnecting red 8 andcrank 9. w a Rigidlyjfix lto the pistOIl,-Qf which it is virtually a part, by means of bolts 12 Or theffl :likeand extendingintothecranlrcase 13 is ayokeor strap let 'prefrably of segmental crosssection. Theyoke 14, together .with the pisten properextends completely 'around thec'onnectingrod including the wrist pin 16 andcrankpin 1.7, and defines. a plane paral-' l'el .to the ;plane-of motion ofthe connecting rod. Due to the position of the yoke relative to the connecting rod, the formeris .of such shape as to not interf ere with the oscillation '21 oI" the connecting rod. Fixed to the yoke, preferably at a point longitudinally aligned with the cyIinder, which point is preferably most remote from the piston proper, is an extension 18 which is in slidable engagement with a guideway 19 formed in the wall 21 of the crank-case 13. As here shown, the extension 18 is in the form of a cylndrical rod 22 which moves ina direction parallel to the aXis of the cylinder 'and reciprocates in the cylindrical bore 23013 'the uideway" 19.' i It will thus be noted that the portion of the piston engaging the 'walls of the cylinder will be prevented from moving in any direction other than axially of the cylinder. Thus rocking of the piston is absolutely prevented.

The piston proper is provided with cored walls, so that the combined weight of the piston including the yoke portion is no more than the weight of the usual piston, and since the side thrust of the piston is distributed so that the unit pressure on the bearing surfaces involved is reduced to a minimum, 'wear of the 'parts will be correspondingly reduced and the efiiciency of the engine will be preserved. e i

Adjustably positioned in the crank case is a roller '31 which is adapt'ed to bear against the side 32 of the piston from which the connecting rod moves during the first part of the-working stroke. 'In this manner, if the side 32 of the piston or the cylinder wall portion 33 engaged thereby becomes worn the roller may be adjusted to cooperate with the guide members 18 and 19 to hold the piston to its proper path. i V

-In Figure 2, a slightly 'modified form of guiding means is shown; In this 'embodie ment, extensions 34: at opposite sides of the re'ciprocation therein; a connecting rod at one end of the piston; said piston being reduced in cross sectional area adjacent said rod whereby such reduced piston will be kept spaced from the walls of the cylinder when disposed therein; a yoke member rigidfly fixed at an end to, and forming an extension of, the piston and disposed about said rod:

'means adj acent the other end of said yoke for yoke are formed with hearing faces 36 which 4 are arranged to engage hearing surfaces 37 provided on the adjacent sides of the crank case.

I clam: i 1. In an internal combuston engine, the

combination with a piston mounted for recipton at the side away from which the connecti i ing rod swings during the first part of the power stroke. p

2. In a piston guiding means, the combination with a cylinder, a piston mounted .for recprocaton theren and a connecting rod at one end of the piston; said piston being reduced m'cross sectonal area adjacent said rod: Whereby ch reduced portion will'be I\ kept spaced from the walls of the cylinder U i 'when disposed therein, and an adjustable non-frcton hearing member arranged to engage said reduced portion of the piston during the reciprocation thereof.

3. In piston guidng means; the combination with a cylinder; a piston' nountedtor

US1769375A 1923-12-17 1923-12-17 Piston-guiding means Expired - Lifetime US1769375A (en)

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US1769375A US1769375A (en) 1923-12-17 1923-12-17 Piston-guiding means

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US1769375A US1769375A (en) 1923-12-17 1923-12-17 Piston-guiding means

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US1769375A true US1769375A (en) 1930-07-01

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2721982A1 (en) * 1994-06-30 1996-01-05 Lakhdar Chaker Piston machines with inverse connecting rods for IC engines
WO2000079114A1 (en) * 1999-06-17 2000-12-28 New Power Concepts Llc Folded guide link stirling engine
WO2002103186A1 (en) * 2001-06-15 2002-12-27 New Power Concepts Llc Guide link drive
US20040003712A1 (en) * 1999-06-17 2004-01-08 Langenfeld Christopher C. Reduced weight guide link
US20050008272A1 (en) * 2003-07-08 2005-01-13 Prashant Bhat Method and device for bearing seal pressure relief
US20050175468A1 (en) * 2004-02-06 2005-08-11 New Power Concepts Llc Work-space pressure regulator
US20050183419A1 (en) * 2001-06-15 2005-08-25 New Power Concepts Llc Thermal improvements for an external combustion engine
US20050188674A1 (en) * 2004-02-09 2005-09-01 New Power Concepts Llc Compression release valve
US20050250062A1 (en) * 2004-05-06 2005-11-10 New Power Concepts Llc Gaseous fuel burner
US7654084B2 (en) 2000-03-02 2010-02-02 New Power Concepts Llc Metering fuel pump
US8006511B2 (en) 2007-06-07 2011-08-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US8069676B2 (en) 2002-11-13 2011-12-06 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US8282790B2 (en) 2002-11-13 2012-10-09 Deka Products Limited Partnership Liquid pumps with hermetically sealed motor rotors
US8359877B2 (en) 2008-08-15 2013-01-29 Deka Products Limited Partnership Water vending apparatus
US8511105B2 (en) 2002-11-13 2013-08-20 Deka Products Limited Partnership Water vending apparatus

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2721982A1 (en) * 1994-06-30 1996-01-05 Lakhdar Chaker Piston machines with inverse connecting rods for IC engines
WO2000079114A1 (en) * 1999-06-17 2000-12-28 New Power Concepts Llc Folded guide link stirling engine
US6253550B1 (en) 1999-06-17 2001-07-03 New Power Concepts Llc Folded guide link stirling engine
US6591608B2 (en) 1999-06-17 2003-07-15 New Power Concepts Llc Folded guide link drive improvements
US20040003712A1 (en) * 1999-06-17 2004-01-08 Langenfeld Christopher C. Reduced weight guide link
US20100269789A1 (en) * 2000-03-02 2010-10-28 New Power Concepts Llc Metering fuel pump
US7654084B2 (en) 2000-03-02 2010-02-02 New Power Concepts Llc Metering fuel pump
US7308787B2 (en) 2001-06-15 2007-12-18 New Power Concepts Llc Thermal improvements for an external combustion engine
US20050183419A1 (en) * 2001-06-15 2005-08-25 New Power Concepts Llc Thermal improvements for an external combustion engine
WO2002103186A1 (en) * 2001-06-15 2002-12-27 New Power Concepts Llc Guide link drive
US8282790B2 (en) 2002-11-13 2012-10-09 Deka Products Limited Partnership Liquid pumps with hermetically sealed motor rotors
US8069676B2 (en) 2002-11-13 2011-12-06 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US8511105B2 (en) 2002-11-13 2013-08-20 Deka Products Limited Partnership Water vending apparatus
US20050008272A1 (en) * 2003-07-08 2005-01-13 Prashant Bhat Method and device for bearing seal pressure relief
US20050175468A1 (en) * 2004-02-06 2005-08-11 New Power Concepts Llc Work-space pressure regulator
US7310945B2 (en) 2004-02-06 2007-12-25 New Power Concepts Llc Work-space pressure regulator
US20050188674A1 (en) * 2004-02-09 2005-09-01 New Power Concepts Llc Compression release valve
US7007470B2 (en) 2004-02-09 2006-03-07 New Power Concepts Llc Compression release valve
US20050250062A1 (en) * 2004-05-06 2005-11-10 New Power Concepts Llc Gaseous fuel burner
US7934926B2 (en) * 2004-05-06 2011-05-03 Deka Products Limited Partnership Gaseous fuel burner
US8006511B2 (en) 2007-06-07 2011-08-30 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US8359877B2 (en) 2008-08-15 2013-01-29 Deka Products Limited Partnership Water vending apparatus

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