US1714806A - Valve-operating mechanism - Google Patents

Valve-operating mechanism Download PDF

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Publication number
US1714806A
US1714806A US168204A US16820427A US1714806A US 1714806 A US1714806 A US 1714806A US 168204 A US168204 A US 168204A US 16820427 A US16820427 A US 16820427A US 1714806 A US1714806 A US 1714806A
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United States
Prior art keywords
valve
operating mechanism
tappets
motor
tappet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US168204A
Inventor
Nutt Arthur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Curtiss Aeroplane and Motor Corp
Original Assignee
Curtiss Aeroplane and Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Curtiss Aeroplane and Motor Corp filed Critical Curtiss Aeroplane and Motor Corp
Priority to US168204A priority Critical patent/US1714806A/en
Application granted granted Critical
Publication of US1714806A publication Critical patent/US1714806A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/34—Lateral camshaft position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

Definitions

  • uuirss stares nane rarest orrics.
  • My invention relates to valve operating mechanism for internal combustion motors.
  • An object of the invention is to reduce the weight and the overall height of an internal combustion motor, and hence its frontal or projected area, by so forming the valve tappets thereof as to admit of their proper operation by'the engagement therewith of the operating means or devices, the point or points.
  • Fig. 1 is a plan view of one of the cylinders of a multi-cylinder internal combustion motor having its cylinders cast enbloc showing the valve operating mechanism of my invention
  • Fig. 2 is a section on line 22 of Fig. 1;
  • Fig. 3 is a longitudinal vertical sectional view of a portion of one of the motor cylinders; the valve operating mechanism being illustrated in end elevation, and
  • Fig. 4 is a perspective view of one of the valve tappets.
  • cylinder 10 In the embodiment of the invention selected for illustration, but one of the cylinders of multi-cylinder internal combustion motor is shown.
  • Such cylinder 10 is provided with two intake valves 11 and two exhaust valves 12, the intake valves being disposed'at one side of a plane passing thru the axes of the cylinders and the exhaust valves 12 on the opposite sideof said plane.
  • Each pair of valves has associated with it a valve tappet 13.
  • V The valve tappets for the exhaust valves 12 and for the intake valves 11 are identical.
  • Each tappet includes a shank or stem portion l l,
  • a head portion 15 and'an intermediate portion 16 said intermediate portion being formed by enlarging the stem 1% at or near its point of juncture with said head portion 15.
  • the head portions 15 of the respective tappets extendlongitudinally of the motor as indicated in Fig. .1, while the intermediate portions 16 of said tappets have formed therein transverse openings 17 into which the valve operating devices 18 are adapted to extend.
  • the bottom wall 19'of each opening '17 constitutes preciably reduced.
  • bearing surface against which the operating device 18 is adapted to bear; said bearing surface in each instance being located intermediately of the ends of the stems.
  • the operating devices 18 are in the form of rocker arms having intermedi ate pivot axes 20 extending parallel to the direction of the major axis of the head portions of the several tappets. At their outer ends said rocker arms are adapted to engage push valve tappet rods 21 which are inturn adapted to be re'- ciprocated by any suitable operating means (not shown).
  • a single push rod 20 is provided for the proper operation of each valve tappet 13, and as the rocker arms 18 are not required to be located above the head portions of the valve tappets, obviously the overall height of the motor is very, ap-
  • the weight of the motor is somewhat reduced by reason of the decrease in size of the rocker arm supports and the push rods. f
  • valve operating mechanism for in ter'nal combustion motors, a valve tappet including a stem portion and a laterally extending head portion, a bearing surface formed on the valve tappet stem below said head portion, and operating means engageable with said bearing surface to actuate said tappet.
  • valve tappet including a stem portion and alaterally extend signature.

Description

May 2 8, 1929. A -r VALVE OPERATING MECHANISM Original Filed Feb. 14, 1925 FIG .1.
INVENTOR ARTHUR NUTT.
1 NM I A MMJ Wm WM .7... on h m Patented May 28, 1829.
uuirss stares nane rarest orrics.
ARTHUR N'UTT, OF KENMORE, NEW YORK, ASSIGNOR T0 GURTISS AEROPLANE & MOTOR COMPANY, INC., A CORPORATION OF NEW YORK.
VALVE-OPERATING- MECHANISM.
Refile for abandoned application Serial No. 9,167, filed February '14, 1925.
February 14, 1927.
My invention relates to valve operating mechanism for internal combustion motors.
An object of the invention is to reduce the weight and the overall height of an internal combustion motor, and hence its frontal or projected area, by so forming the valve tappets thereof as to admit of their proper operation by'the engagement therewith of the operating means or devices, the point or points.
of contact between said devices and said valve tappets being intermediately located between the ends of the valve tappet stems.
In the drawings, wherein like reference characters denote like or corresponding parts:
Fig. 1 is a plan view of one of the cylinders of a multi-cylinder internal combustion motor having its cylinders cast enbloc showing the valve operating mechanism of my invention;
Fig. 2 is a section on line 22 of Fig. 1;
Fig. 3 is a longitudinal vertical sectional view of a portion of one of the motor cylinders; the valve operating mechanism being illustrated in end elevation, and
Fig. 4 is a perspective view of one of the valve tappets.
In the embodiment of the invention selected for illustration, but one of the cylinders of multi-cylinder internal combustion motor is shown. Such cylinder 10 is provided with two intake valves 11 and two exhaust valves 12, the intake valves being disposed'at one side of a plane passing thru the axes of the cylinders and the exhaust valves 12 on the opposite sideof said plane. Each pair of valves has associated with it a valve tappet 13. V The valve tappets for the exhaust valves 12 and for the intake valves 11 are identical. Each tappet includes a shank or stem portion l l,
a head portion 15 and'an intermediate portion 16, said intermediate portion being formed by enlarging the stem 1% at or near its point of juncture with said head portion 15. The head portions 15 of the respective tappets extendlongitudinally of the motor as indicated in Fig. .1, while the intermediate portions 16 of said tappets have formed therein transverse openings 17 into which the valve operating devices 18 are adapted to extend. The bottom wall 19'of each opening '17 constitutes preciably reduced. Moreover,
scope thereof.
This application filed Serial No; 168,204.
a bearing surface against which the operating device 18 is adapted to bear; said bearing surface in each instance being located intermediately of the ends of the stems.
As illustrated, the operating devices 18 are in the form of rocker arms having intermedi ate pivot axes 20 extending parallel to the direction of the major axis of the head portions of the several tappets. At their outer ends said rocker arms are adapted to engage push valve tappet rods 21 which are inturn adapted to be re'- ciprocated by any suitable operating means (not shown). Thus organized, a single push rod 20 is provided for the proper operation of each valve tappet 13, and as the rocker arms 18 are not required to be located above the head portions of the valve tappets, obviously the overall height of the motor is very, ap-
thru the arrangement illustrated, the weight of the motor is somewhat reduced by reason of the decrease in size of the rocker arm supports and the push rods. f
While I have described'my invention in detail in its presentpreferred embodiment, it will be obvious to those'skilled in the art after understanding my invention, that various changes and modifications may be made thereinwithout departing from the spirit or I aim in the appended claims to coverall such modifications and changes.
That I claim is 1. In valve operating mechanism for in ter'nal combustion motors, a valve tappet including a stem portion and a laterally extending head portion, a bearing surface formed on the valve tappet stem below said head portion, and operating means engageable with said bearing surface to actuate said tappet.
2. In valve operating mechanism for internalcombustmn motors, a valve tappet including a stem portion and alaterally extend signature. p
. ARTHUR vNU'IT.
US168204A 1927-02-14 1927-02-14 Valve-operating mechanism Expired - Lifetime US1714806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179764B (en) * 1961-09-29 1964-10-15 Maschf Augsburg Nuernberg Ag Valve control for internal combustion engines with two inlet and two outlet valves per cylinder
US3613647A (en) * 1969-02-12 1971-10-19 Kloeckner Humboldt Deutz Ag Apparatus for actuating a plurality of valves of piston-operated internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179764B (en) * 1961-09-29 1964-10-15 Maschf Augsburg Nuernberg Ag Valve control for internal combustion engines with two inlet and two outlet valves per cylinder
US3613647A (en) * 1969-02-12 1971-10-19 Kloeckner Humboldt Deutz Ag Apparatus for actuating a plurality of valves of piston-operated internal combustion engines

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