US2641235A - Engine rocker arm mechanism - Google Patents

Engine rocker arm mechanism Download PDF

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Publication number
US2641235A
US2641235A US16183A US1618348A US2641235A US 2641235 A US2641235 A US 2641235A US 16183 A US16183 A US 16183A US 1618348 A US1618348 A US 1618348A US 2641235 A US2641235 A US 2641235A
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United States
Prior art keywords
shaft
rocker arm
rocker
head
bore
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Expired - Lifetime
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US16183A
Inventor
John C Slonneger
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CONTINENTAL SUPPLY Co
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CONTINENTAL SUPPLY Co
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Filing date
Publication date
Priority claimed from US654427A external-priority patent/US2590134A/en
Application filed by CONTINENTAL SUPPLY Co filed Critical CONTINENTAL SUPPLY Co
Priority to US16183A priority Critical patent/US2641235A/en
Application granted granted Critical
Publication of US2641235A publication Critical patent/US2641235A/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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms

Definitions

  • This invention relates to new and useful improvements in engine rocker arm mechanisms.
  • One object of the invention is to provide an improved rocker arm mechanism for internal combustion engines which includes a stationary shaft having rocker arms journaled thereon and resiliently retained members at the ends of the shafts conning the arms on the shaft, whereby said arms may be readily removed and replaced and binding of the arms of the shaft is obviated.
  • Another object of the invention is to provide a device of the character described wherein the rocker shaft is tubular so as to serve as an oil reservoir and has plugs in its ends connected by a coiled spring and provided with flanges for holding the arms on the shaft, whereby said plugs may readily be disconnected for removing and replacing the arms or for cleaning out the reservoir or its ports.
  • a further object of the invention is to provide the shaft and rocker arms with periodically registering ports and means for supplying oil to the reservoir under pressure, whereby fine streams of oil are intermittently ejected onto the valve stems.
  • FIG. 1 is a, partial, horizontal, cross-sectional view of an internal combustion engine having a rocker arm mechanism constructed in accordance with this invention
  • Fig. 2 is a side elevational view of the rocker arm mechanism
  • - Fig. 3 is a horizontal cross-sectional view of the same
  • Fig. 4 is a longitudinal, vertical, sectional view of the portion of the engine shown in Fig. 1, and
  • Fig. 5 is an enlarged sectional view of the mechanism.
  • the numeral I0 designates the crankcase of a single cylinder, horizontal type of internal engine which has mounted therein in a suitable manner a crankshaft (not shown) and a camshaft (not shown).
  • the inner end of the crankcase is formed with a transverse 8 Claims. (Cl. 12S-90) web I3 and a cooling Yjacket I4 extends there-'- from.
  • a cylinder I5 has its inner end packed in an opening I6 in the web and is provided at its outer or head-end with an external annular flange I1 seated in an internal, annular abutment I8 at the head-end of the jacket.
  • a cylinder head I9 is secured to the abutment by long bolts 20.
  • the head is generally hollow, the bolts extending through sleeves 2l.
  • the head is cast with an intake duct 22 in its upper portion and with an exhaust duct 23 in its lower portion, said ducts being spaced from the outer walls of the head so as to provide a coolant circulatingv space thereround.
  • the head space communicates with the jacket I4 through ports 24 registering with ports 25 in the abutment I8.
  • the inner ends of the ducts are made integral with a valve block, indicated generally by the numeral 2B, and merged into elbows 2l and 28, respectively, directed toward the cylinder I5.
  • the ducts open into a head chamber 29 formed integral with the head block andk open to the cylinder.
  • Annular valve seats 30 and 3I are formed around the inner ends of the ducts, the seat 30 receiving an inlet valve head 32 and the seat 3
  • the valve head 32 has a stem 34, while the exhaust-valve head 33 has a stem 35.
  • These stems are slidable in horizontal bushings 36 mounted in the block.
  • Collars 3l are secured on the stems adjacent their outer ends and coil springs 38, surrounding the stems, are confined between the collars and the head block I9.
  • a rocker bracket 39 is mounted on the outer face of the head block by means of a stud bolt 40 and the bolt 20, as shown in Fig. 1.
  • This bracket near its outer end, is formed with a transverse bore 4I and is split radially, at 42, from said bore outwardly so that a tubular rocker shaft 43, may be clamped therein when the nut 44 is tightened on the bolt 40.
  • the medial portion of the shaft is received by the bracket so that said shaft extends on each side thereof.
  • Rocker arms 45 have hubs 46 at their medial portions, said hubs being journaled onthe shaft 43 with their inner ends bearing against the sides of the bracket.
  • the hubs are confined on the shaft by cap'plugs 4l having stepped bosses 48 engaging in the ends of the rocker shaft.
  • Each boss has an eye 49 and the ends of a coiled spring 50 positioned in the shaft, are hooked into these eyes. The spring, being under tension, is Vsufficiently strong to hold the hubs on the shaft.
  • rocker arm journaled on the shaft, said rocker arm having a bore receiving the shaft and an oil passage leading from the bore to an external portion of the rocker arm, the rocker arm oil passage and the shaft port being of limited cross-sectional area at least at the engaging surfaces of the rocker shaft and the rocker arm bore whereby as the rocker arm oscillates upon the rocker shaft the rocker arm oil passage is intermittently moved into and out of communication with the shaft port.
  • rocker shaft having an internal oil passage and :a port leading from the passage to the surface of the shaft, of a rocker arm having a bore receiving the shaft and overlying the shaft port, the rocker arm being vadapted to oscillate upon the rocker shaft through an arc of predetermined magnitude, said rocker arm having an oil passage leading from the bore to an external portion of the rocker arm, the port being so positioned upon the shaft and the rocker arm oil passage being so positioned with respect to the rocker arm bore as to place the port and the latter passage in communication during a portion only of the arc of oscillation of the rocker arm on the shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

June 9,- 1953 J. c. sLoNNEGER 2,641,235
ENGINE ROCHER ARM MECHANISM Filed March 22, 1948l 2 Sheets-Sheet 1 43 .\\\Q\\\\\\ 47 zlvlllrlfflggl'rfalegl 50 ilk@ l' i WW f 67 43 l A Y 4/ 59 v John 6'. J/onneger i 5 w INVENTOR. 7' 2 '/ff i4; 53 3y Q \\\g A J 52' 65 66 79 ATTORNEYS June 9, 1953 J. c. sLoNNl-:GER 2,641,235
ENGINE RocxER ARM MECHANISM Filed Marohzz, 1948 v 2 sheets-sheet 2 Patented June 9, 1953 ENGINE ROCKER ARM MCHANISM John C. Slonneger, Dallas,r Tex'., assignor to The Continental Supply Company, Dallas, Tex., a corporation of Delaware "1 Griginal application March 14, ,-1946, SerialNo.A
' 654,427, now Patent No. 2,590,134, dated March 25, 1952. Divided and this application March 22, 1948, Serial No. 16,183
y This invention relates to new and useful improvements in engine rocker arm mechanisms.
One object of the invention is to provide an improved rocker arm mechanism for internal combustion engines which includes a stationary shaft having rocker arms journaled thereon and resiliently retained members at the ends of the shafts conning the arms on the shaft, whereby said arms may be readily removed and replaced and binding of the arms of the shaft is obviated.
v Another object of the invention is to provide a device of the character described wherein the rocker shaft is tubular so as to serve as an oil reservoir and has plugs in its ends connected by a coiled spring and provided with flanges for holding the arms on the shaft, whereby said plugs may readily be disconnected for removing and replacing the arms or for cleaning out the reservoir or its ports.
A further object of the invention is to provide the shaft and rocker arms with periodically registering ports and means for supplying oil to the reservoir under pressure, whereby fine streams of oil are intermittently ejected onto the valve stems. l
A construction designed to carry out the invention will be hereinafter described together with other features of the invention.
',The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, wherein examples of the invention are shown, and wherein:
f Fig. 1 is a, partial, horizontal, cross-sectional view of an internal combustion engine having a rocker arm mechanism constructed in accordance with this invention,
Fig. 2 is a side elevational view of the rocker arm mechanism,
- Fig. 3 is a horizontal cross-sectional view of the same,
Fig. 4 is a longitudinal, vertical, sectional view of the portion of the engine shown in Fig. 1, and
Fig. 5 is an enlarged sectional view of the mechanism.
This application is a division of my co-pending application ledv March 14, 1946, Serial No. 654,427, now matured into Patent Number 2,590,134, issued March 25, 1952.
In the drawings, the numeral I0 designates the crankcase of a single cylinder, horizontal type of internal engine which has mounted therein in a suitable manner a crankshaft (not shown) and a camshaft (not shown). The inner end of the crankcase is formed with a transverse 8 Claims. (Cl. 12S-90) web I3 and a cooling Yjacket I4 extends there-'- from. A cylinder I5 has its inner end packed in an opening I6 in the web and is provided at its outer or head-end with an external annular flange I1 seated in an internal, annular abutment I8 at the head-end of the jacket.
V The engine being of the valve-in-head type, a cylinder head I9 is secured to the abutment by long bolts 20. The head is generally hollow, the bolts extending through sleeves 2l. The head is cast with an intake duct 22 in its upper portion and with an exhaust duct 23 in its lower portion, said ducts being spaced from the outer walls of the head so as to provide a coolant circulatingv space thereround. The head space communicates with the jacket I4 through ports 24 registering with ports 25 in the abutment I8. The inner ends of the ducts are made integral with a valve block, indicated generally by the numeral 2B, and merged into elbows 2l and 28, respectively, directed toward the cylinder I5.
The ducts open into a head chamber 29 formed integral with the head block andk open to the cylinder. Annular valve seats 30 and 3I, respec tively, are formed around the inner ends of the ducts, the seat 30 receiving an inlet valve head 32 and the seat 3| receiving an exhaust-valve head 33. The valve head 32 has a stem 34, while the exhaust-valve head 33 has a stem 35. These stems are slidable in horizontal bushings 36 mounted in the block. Collars 3l are secured on the stems adjacent their outer ends and coil springs 38, surrounding the stems, are confined between the collars and the head block I9.
A rocker bracket 39 is mounted on the outer face of the head block by means of a stud bolt 40 and the bolt 20, as shown in Fig. 1. This bracket, near its outer end, is formed with a transverse bore 4I and is split radially, at 42, from said bore outwardly so that a tubular rocker shaft 43, may be clamped therein when the nut 44 is tightened on the bolt 40. The medial portion of the shaft is received by the bracket so that said shaft extends on each side thereof.
Rocker arms 45 have hubs 46 at their medial portions, said hubs being journaled onthe shaft 43 with their inner ends bearing against the sides of the bracket. The hubs are confined on the shaft by cap'plugs 4l having stepped bosses 48 engaging in the ends of the rocker shaft. Each boss has an eye 49 and the ends of a coiled spring 50 positioned in the shaft, are hooked into these eyes. The spring, being under tension, is Vsufficiently strong to hold the hubs on the shaft. 'Y
This plug arrangement of confining the rocker s of the rocker arm, the rocker arm oil passage and the shaft port being restricted so as to be intermittently in and out of register as the rocker arm oscillates on the shaft.
6. The combination with a rocker shaft having an internal oil passage and a port leading from the passage to the surface of the shaft, of a rocker arm journaled on the shaft, said rocker arm having a bore receiving the shaft and an oil passage leading from the bore to an external portion of the rocker arm, the rocker arm oil passage and the shaft port being of limited cross-sectional area at least at the engaging surfaces of the rocker shaft and the rocker arm bore whereby as the rocker arm oscillates upon the rocker shaft the rocker arm oil passage is intermittently moved into and out of communication with the shaft port.
7. The combination with a rocker shaft having an internal oil passage and :a port leading from the passage to the surface of the shaft, of a rocker arm having a bore receiving the shaft and overlying the shaft port, the rocker arm being vadapted to oscillate upon the rocker shaft through an arc of predetermined magnitude, said rocker arm having an oil passage leading from the bore to an external portion of the rocker arm, the port being so positioned upon the shaft and the rocker arm oil passage being so positioned with respect to the rocker arm bore as to place the port and the latter passage in communication during a portion only of the arc of oscillation of the rocker arm on the shaft.
8. The combination with a rocker shaft having an internal oil passage and a port leading from the passage to the surface of the shaft, of a rocker arm having a bore receiving the shaft and overlying the shaft port, the rocker arm being adapted to oscillate upon the rocker shaft through an arc of predetermined magnitude, said rocker arm having an oil passage leading from the bore to an external portion of the rocker arm, the latter passage having an inlet in the wall of the bore, said inlet being so positioned circumferentially of the bore as to overlie the shaft port during a portion only of the arc of oscillation of the rocker arm on the shaft.
JOHN C. SLONNEGER.
References Cited in the le 0f this patent UNITED STATES PATENTS Number Name Date 1,617,986 Blank Feb. 15, 1927 1,624,497 McAllister Apr. 12, 1927 1,842,555 McLeod Jan. 26, 1932 1,930,368 Nelson Oct. 10, 1933 2,019,792 Nieman Nov. 5, 1935 2,104,729 Bijur Jan. 11, 1938 2,123,681 Willgoos July 12, 1938 2,298,981 Smith Oct. 13, 1942 2,469,564 Leake May 10, 1949 2,525,791 Good Oct. 17, 1950
US16183A 1946-03-14 1948-03-22 Engine rocker arm mechanism Expired - Lifetime US2641235A (en)

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Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US654427A US2590134A (en) 1946-03-14 1946-03-14 Internal-combustion engine
US16183A US2641235A (en) 1946-03-14 1948-03-22 Engine rocker arm mechanism

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3229852A1 (en) * 1982-08-11 1984-02-16 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Rocker lever arrangement in an internal combustion engine
US4537166A (en) * 1982-09-27 1985-08-27 Honda Giken Kogyo Kabushiki Kaisha Lubricating arrangement in valve mechanism of an overhead camshaft engine
US4672926A (en) * 1983-01-20 1987-06-16 Saab-Scania Aktiebolag Arrangement for hydraulic pressure feed in internal combustion engines
US5005544A (en) * 1990-02-06 1991-04-09 Spangler Earl M Rocker shaft support system for internal combustion engine
DE102006007981A1 (en) * 2006-02-21 2007-08-23 Deutz Ag Safety device e.g. for axial fixture of rocker arm of combustion engine, has protection disk fixed on front face of rocker arm bolt
US20130239916A1 (en) * 2010-10-06 2013-09-19 Deutz Aktiengesellschaft Internal combustion engine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1617986A (en) * 1921-03-19 1927-02-15 Merton H Blank Internal-combustion engine
US1624497A (en) * 1926-03-27 1927-04-12 Ellis H Mcallister Automatic valve adjuster and silencer
US1842555A (en) * 1928-04-10 1932-01-26 Clifford J Mcleod Lubricating device for valve stem bearings
US1930368A (en) * 1931-12-18 1933-10-10 Jennings W Nelson Valve oiler and silencer
US2019792A (en) * 1932-01-14 1935-11-05 Bethlehem Steel Corp Adjusting mechanism
US2104729A (en) * 1928-12-29 1938-01-11 Auto Research Corp Automatic centralized lubricating installation
US2123681A (en) * 1935-09-25 1938-07-12 United Aircraft Corp Internal combustion engine-rocker arm lubrication
US2298981A (en) * 1941-05-24 1942-10-13 Buda Co Rocker arm assembly
US2469564A (en) * 1945-08-03 1949-05-10 James M Leake Engine rocker arm
US2525791A (en) * 1947-12-18 1950-10-17 Francis R Good Kit for overhead type valves

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1617986A (en) * 1921-03-19 1927-02-15 Merton H Blank Internal-combustion engine
US1624497A (en) * 1926-03-27 1927-04-12 Ellis H Mcallister Automatic valve adjuster and silencer
US1842555A (en) * 1928-04-10 1932-01-26 Clifford J Mcleod Lubricating device for valve stem bearings
US2104729A (en) * 1928-12-29 1938-01-11 Auto Research Corp Automatic centralized lubricating installation
US1930368A (en) * 1931-12-18 1933-10-10 Jennings W Nelson Valve oiler and silencer
US2019792A (en) * 1932-01-14 1935-11-05 Bethlehem Steel Corp Adjusting mechanism
US2123681A (en) * 1935-09-25 1938-07-12 United Aircraft Corp Internal combustion engine-rocker arm lubrication
US2298981A (en) * 1941-05-24 1942-10-13 Buda Co Rocker arm assembly
US2469564A (en) * 1945-08-03 1949-05-10 James M Leake Engine rocker arm
US2525791A (en) * 1947-12-18 1950-10-17 Francis R Good Kit for overhead type valves

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3229852A1 (en) * 1982-08-11 1984-02-16 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Rocker lever arrangement in an internal combustion engine
US4537166A (en) * 1982-09-27 1985-08-27 Honda Giken Kogyo Kabushiki Kaisha Lubricating arrangement in valve mechanism of an overhead camshaft engine
US4672926A (en) * 1983-01-20 1987-06-16 Saab-Scania Aktiebolag Arrangement for hydraulic pressure feed in internal combustion engines
US5005544A (en) * 1990-02-06 1991-04-09 Spangler Earl M Rocker shaft support system for internal combustion engine
DE102006007981A1 (en) * 2006-02-21 2007-08-23 Deutz Ag Safety device e.g. for axial fixture of rocker arm of combustion engine, has protection disk fixed on front face of rocker arm bolt
US20130239916A1 (en) * 2010-10-06 2013-09-19 Deutz Aktiengesellschaft Internal combustion engine
US9133766B2 (en) * 2010-10-06 2015-09-15 Deutz Aktiengesellschaft Internal combustion engine

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