US1278195A - Valve-actuating rocker-arm for internal-combustion engines. - Google Patents

Valve-actuating rocker-arm for internal-combustion engines. Download PDF

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Publication number
US1278195A
US1278195A US15956617A US15956617A US1278195A US 1278195 A US1278195 A US 1278195A US 15956617 A US15956617 A US 15956617A US 15956617 A US15956617 A US 15956617A US 1278195 A US1278195 A US 1278195A
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United States
Prior art keywords
arm
valve
rocker arm
internal
combustion engines
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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
US15956617A
Inventor
Walter G Noack
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.)
TRACTOR MOTORS Co
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TRACTOR MOTORS Co
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.)
Filing date
Publication date
Application filed by TRACTOR MOTORS Co filed Critical TRACTOR MOTORS Co
Priority to US15956617A priority Critical patent/US1278195A/en
Application granted granted Critical
Publication of US1278195A publication Critical patent/US1278195A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/1828—Cam, lever, and slide
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers

Definitions

  • the invention relates to rocker arms for actuating overhead valves in internal com bustion engines.
  • An object of the invention is to provide a rocker arm which is adjustable to produce different valve openings or to compensate for wear of the various valve actuating parts.
  • Figure 1 is a section of a portion of an internal combustion engine showing the rocker arm of my invention.
  • Fig. 2 is a side elevation of the rocker arm partly in section.
  • Fig. 3 is a plan or top view of the rocker arm.
  • Rocker arms are employed in internal combustion engines of the valve-in-the-head or overhead valve type to transmit movement from the push-rods to the valve stems.
  • the rocker arm 2 transmits the motion from the push-rod 3, which is actuated by the cam 4, to the valve stem 5;
  • the rocker arm is fulcrumed intermediate its ends on a suitable pivot 6, and is provided at one end with a curved chilled face 7 which bears against the upper end of the valve stem.
  • the rocker arm is provided with a boss 8 having a seat therein for the end of the push-rod, the bottom of the seat or the push rod bearing surface comprising a hardened screw 9 arranged vertically in the boss.
  • the screw is provided with a cupped lower face with which the curved upper end of the push-rod contacts.
  • the screw 9 is rotated to vary the position of its bearing surface.
  • the rocker arm is constructed so that the adjusting screw may be firmly clamped in its adjusted position.
  • the end of the rocker arm and the upper portion of the boss 8 are split by a saw-cut 12 and a bolt 13 extending through the split portion forms a means of clamping the screw against rotation.
  • Means are also provided for lubricating the various working surfaces of the rocker arm, so that wear may be reduced to a minimum.
  • a cup 14 Formed on the arm above the fulcrum bearing, is a cup 14 which communicates with the fulcrum bearing through the passage 15.
  • the cup 14 is filled with felt packing which is soaked with lubricating oil.
  • the groove 16 communicates with the saw-cut 12 through which the oil is conducted to the bearing between the push rod and the adjusting screw.
  • the groove 17 conducts the oil to the surface of the arm above the curved face 7, whence it flows to said face.
  • the grooves slope downwardly from the oil cup toward the ends of the arm, so that the oil is conducted to the bearing surfaces.
  • a rocker arm having an open bottom pocket at one end and provided with a slot communicating with said pocket and opening on the upper face of the rocker arm and means for introducing a lubricant into said slot.
  • a rocker arm having bearing surfaces at opposite ends, a groove on the upper face of the arm adapted to conduct lubricant to said surfaces and means for supplying lubricant to said groove.
  • rocker arm having bearing surfaces at opposite ends, a cup on said arm adapted to contain lubricant and grooves extending from said cup for conducting lubricant to said surfaces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Description

W. G. NOACK.
VALVE ACTUATING ROCKER ARM FOR INTERNAL COMBUSTION ENGINES.
APPLICATION FILED APR. 3. I917.
1 ,278, 1 95 Patented Sept. 10, 1918.
I I I WITNESS INVENTOR.
" A TTGRNE Y5 UNITED STATES PATENT OFFICE.
WALTER G. NOACK, OF STOCKTON, CALIFORNIA, ASSIGNOR TO TRACTOR MOTORS COMPANY, OF BENICIA, CALIFORNIA, A CORPORATION OF CALIFORNIA.
Specification of Letters Patent.
Patented Sept. 10,1918.
Application filed April 3, 1917. Serial No. 159,566.
To all whom it may concern:
Be it known that I, WALTER G. N OAGK, a citizen of the United States, and a resident of Stockton, county of San Joaquin. and State of California, have invented certain new and useful Valve-Actuating Rocker- Arm for Internal-Combustion Engines, of which the following is a specification.
The invention relates to rocker arms for actuating overhead valves in internal com bustion engines.
An object of the invention is to provide a rocker arm which is adjustable to produce different valve openings or to compensate for wear of the various valve actuating parts.
The invention possesses other advantageous features, which, with the foregoing, will be set forth in the following descrlption where I shall outline in full that form of the invention which I have selected for illustration in the drawings accompanyin and forming part of the present specification.
Referring to said drawings:
Figure 1 is a section of a portion of an internal combustion engine showing the rocker arm of my invention.
Fig. 2 is a side elevation of the rocker arm partly in section.
Fig. 3 is a plan or top view of the rocker arm.
Rocker arms are employed in internal combustion engines of the valve-in-the-head or overhead valve type to transmit movement from the push-rods to the valve stems. In the present construction, the rocker arm 2 transmits the motion from the push-rod 3, which is actuated by the cam 4, to the valve stem 5; The rocker arm is fulcrumed intermediate its ends on a suitable pivot 6, and is provided at one end with a curved chilled face 7 which bears against the upper end of the valve stem.
At its other end the rocker arm is provided with a boss 8 having a seat therein for the end of the push-rod, the bottom of the seat or the push rod bearing surface comprising a hardened screw 9 arranged vertically in the boss. The screw is provided with a cupped lower face with which the curved upper end of the push-rod contacts. When it is desirable to take up Wear of the rocker arm and its associated mechanism or to vary the opening of the valve. the screw 9 is rotated to vary the position of its bearing surface. The rocker arm is constructed so that the adjusting screw may be firmly clamped in its adjusted position. The end of the rocker arm and the upper portion of the boss 8 are split by a saw-cut 12 and a bolt 13 extending through the split portion forms a means of clamping the screw against rotation.
Means are also provided for lubricating the various working surfaces of the rocker arm, so that wear may be reduced to a minimum. Formed on the arm above the fulcrum bearing, is a cup 14 which communicates with the fulcrum bearing through the passage 15. The cup 14 is filled with felt packing which is soaked with lubricating oil. Formed on the upper surface of the rocker arm and communicating with the oil cup, are grooves 1617 extending toward the ends of the rocker arm. The groove 16 communicates with the saw-cut 12 through which the oil is conducted to the bearing between the push rod and the adjusting screw. The groove 17 conducts the oil to the surface of the arm above the curved face 7, whence it flows to said face. The grooves slope downwardly from the oil cup toward the ends of the arm, so that the oil is conducted to the bearing surfaces.
Iclaim:
1. In an internal combustion engine, a rocker arm having an open bottom pocket at one end and provided with a slot communicating with said pocket and opening on the upper face of the rocker arm and means for introducing a lubricant into said slot.
2. In an internal combustion engine. a rocker arm having bearing surfaces at opposite ends, a groove on the upper face of the arm adapted to conduct lubricant to said surfaces and means for supplying lubricant to said groove.
3. In an internal combustion engine, a
rocker arm having bearing surfaces at opposite ends, a cup on said arm adapted to contain lubricant and grooves extending from said cup for conducting lubricant to said surfaces.
In testimony whereof, I have hereunto set my hand at Stockton, California, this 20th day of March, 1917.
WALTER G. NOACK.
US15956617A 1917-04-03 1917-04-03 Valve-actuating rocker-arm for internal-combustion engines. Expired - Lifetime US1278195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15956617A US1278195A (en) 1917-04-03 1917-04-03 Valve-actuating rocker-arm for internal-combustion engines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15956617A US1278195A (en) 1917-04-03 1917-04-03 Valve-actuating rocker-arm for internal-combustion engines.

Publications (1)

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US1278195A true US1278195A (en) 1918-09-10

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490683A (en) * 1944-12-14 1949-12-06 Northwestern Steel & Wire Co Screw and insert assembly
US2509661A (en) * 1944-10-27 1950-05-30 John R Winter Sr Rocker arm lubrication
US2521621A (en) * 1949-11-21 1950-09-05 John R Winter Sr Rocker arm
US2522326A (en) * 1949-11-21 1950-09-12 John R Winter Sr Rocker arm for internal-combustion engines
US2523489A (en) * 1945-03-10 1950-09-26 John R Winter Sr Rocker arm
US2617178A (en) * 1949-06-23 1952-11-11 James M Leake Method of making engine rocker arms
US2631471A (en) * 1946-10-04 1953-03-17 John R Winter Sr Rocker arm
US2667688A (en) * 1950-08-11 1954-02-02 John R Winter Sr Method of constructing rocker arms
US4346678A (en) * 1980-03-27 1982-08-31 Toledo Stamping & Manufacturing Company Rocker arm and method of making same
US4430783A (en) * 1980-03-27 1984-02-14 Toledo Stamping & Manufacturing Company Method of making a rocker arm
CN102926829A (en) * 2012-11-15 2013-02-13 奇瑞汽车股份有限公司 Valve rocker mechanism

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509661A (en) * 1944-10-27 1950-05-30 John R Winter Sr Rocker arm lubrication
US2490683A (en) * 1944-12-14 1949-12-06 Northwestern Steel & Wire Co Screw and insert assembly
US2523489A (en) * 1945-03-10 1950-09-26 John R Winter Sr Rocker arm
US2631471A (en) * 1946-10-04 1953-03-17 John R Winter Sr Rocker arm
US2617178A (en) * 1949-06-23 1952-11-11 James M Leake Method of making engine rocker arms
US2521621A (en) * 1949-11-21 1950-09-05 John R Winter Sr Rocker arm
US2522326A (en) * 1949-11-21 1950-09-12 John R Winter Sr Rocker arm for internal-combustion engines
US2667688A (en) * 1950-08-11 1954-02-02 John R Winter Sr Method of constructing rocker arms
US4346678A (en) * 1980-03-27 1982-08-31 Toledo Stamping & Manufacturing Company Rocker arm and method of making same
US4430783A (en) * 1980-03-27 1984-02-14 Toledo Stamping & Manufacturing Company Method of making a rocker arm
CN102926829A (en) * 2012-11-15 2013-02-13 奇瑞汽车股份有限公司 Valve rocker mechanism
CN102926829B (en) * 2012-11-15 2015-08-12 奇瑞汽车股份有限公司 Valve Rocker Organization

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