US2355011A - Internal-combustion engine - Google Patents

Internal-combustion engine Download PDF

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Publication number
US2355011A
US2355011A US493591A US49359143A US2355011A US 2355011 A US2355011 A US 2355011A US 493591 A US493591 A US 493591A US 49359143 A US49359143 A US 49359143A US 2355011 A US2355011 A US 2355011A
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United States
Prior art keywords
pistons
combustion engine
internal
spider
yokes
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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
US493591A
Inventor
Putnam James Boyd
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Individual
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Publication date
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Priority to US493591A priority Critical patent/US2355011A/en
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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
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • F01B9/026—Rigid connections between piston and rod; Oscillating pistons
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/246—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "pancake" type, e.g. pairs of connecting rods attached to common crankshaft bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/36—Crank gearings; Eccentric gearings without swinging connecting-rod, e.g. with epicyclic parallel motion, slot-and-crank motion
    • 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
    • Y10T74/18248—Crank and slide
    • Y10T74/18256—Slidable connections [e.g., scotch yoke]

Definitions

  • This invention relates to new and -useful improvements in internal combustion engines and more particularly to the rectilinear opposed piston type.
  • the principal objectof the present invention is to provide an internal combustion engineof the opposed piston type wherein connecting rods are eliminated and substituted for by a cam and roller arrangement.
  • Figure l is a top plan view of the engine.
  • Figure 2 is a transverse sectional view taken on the line 2-2 of Figure 1.
  • Figure 3 is a fragmentary detailed sectional View showing adjustment means between the pistons and yokes.
  • Figure 4 is a. top plan view of yokes.
  • Figure 5 is a sectional view taken substantially on the line 5-5 of Figure 4.
  • Fi-gure 6 is an end elevational view of the cam shaft.
  • numeral 5 denotes a cam housing from which project cylinder yblocks 6, 6 on'each of which is a cylinder head l, equipped with the necessary spark plugs 8.
  • Numeral 9 denotes valves for the engine for controlling the fuel intake and scavenging operathe pistons and III tions but these form no part of the present invention.
  • each piston I0 has a laterally disposed boss I5 apertured to receive the corresponding bolt I4 and each -bolt I4 is equipped with a nut I6. Shims I'I may be placed between the boss I5 and the enlargement I3 of the corresponding yoke in order to compensate for wear between certain parts which will now be disclosed.
  • Numeral I8 denotes a shaft having a plurality of circumferentially grooved cams I9 thereon.
  • the pistons ID are equipped with bearing units 20, each havin-g an outside race ring 2
  • the cams are arranged on the shaft in the ring order clearly shown in Figure 1 and further exemplified in Figure 6.
  • the pistons will be prevented from any tendency to rotate by the fact that the rings 2l ride in the grooves of the cams I9. Any wear between the rings 2I and the cams I9 can be easily taken up by the addition of shims I'I.
  • a housin having a pair of opposed cylinders projecting from cylinders and having bosses projecting from opposite sides of the inner ends thereof, a spider rigidly connecting the adjacent ends of said pistons and embodying rigidly connected yokes having spaced side members extending transversely of the pistons at opposite sides of the latter and directly inwardly of said bosses, said side members merging at their upper and lower ends, and bridge pieces connecting adjacent merged ends of the yokes, said side members having intermediate enlargements, bolts passing'through said bosses and said enlargements to rigidly connect the pistons to the spider, a shaft extending through the housing centrally between the cylinders, a circular cam eccentrically secured on said shaft, and rotatable within the spider, and roller elements mounted in the inner ends of the pistons and engaging the periphery of said cam.
  • a housing having a pair of opposed cylinders projecting from. opposite sides thereof, pistons reciprocable in said cylinders and having ⁇ bosses projecting from opposite sides of the inner ends thereof, a spider rigidly connecting the adjacent ends of said pistons and embodying rigidly connected yokes having spaced side members extending transversely of the pistons at opposite sides of the latter and directly inwardly of said bosses, said side members merging at their upper and lower ends, and bridge pieces connecting adjacent merged ends of the yokes, said side members having intermediate enlargements, bolts passing through said bosses and said enlargements to rigidly connect the pistons to the spider, a shaft extending through the housing centrally between the cylinders, a circular cam eccentrically secured 5 o'f the cam.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

Aug. l, 1944. J. B. PUTNAM INTERNAL GOMBUSTION ENGINE yFiled July 5, 1945 `2 sheets-sheet 1 Inventor 7a/mes B.
Adg.1,1944. J. B. UTNAM v Y 2,355,011
Y INTERNAL COMBUSTION ENGINE Filed July 5, 1945 2 sheets-sheet 2 (4 ,J2/aes B.
Patented Aug. 1, 1944 INTERNAL-COMBUSTION ENGINE James Boyd Putnam, El Campo, Tex.
Application July 5, 1943, Serial No. 493,591
(Cl. 'Z4-50) 2 Claims.
This invention relates to new and -useful improvements in internal combustion engines and more particularly to the rectilinear opposed piston type.
The principal objectof the present invention is to provide an internal combustion engineof the opposed piston type wherein connecting rods are eliminated and substituted for by a cam and roller arrangement. Y
Other objects and advantages of the invention reside in certain points of adjustability and means for limiting wear on the several parts.
Other objects and advantages of the invention will become apparent to the reader of the following description.
In the drawings:
Figure l is a top plan view of the engine.
Figure 2 is a transverse sectional view taken on the line 2-2 of Figure 1.
Figure 3 is a fragmentary detailed sectional View showing adjustment means between the pistons and yokes.
Figure 4 is a. top plan view of yokes.
Figure 5 is a sectional view taken substantially on the line 5-5 of Figure 4.
Fi-gure 6 is an end elevational view of the cam shaft.
Referring .to the drawings wherein like numerals refer to like parts, it can be seen that numeral 5 denotes a cam housing from which project cylinder yblocks 6, 6 on'each of which is a cylinder head l, equipped with the necessary spark plugs 8.
Numeral 9 denotes valves for the engine for controlling the fuel intake and scavenging operathe pistons and III tions but these form no part of the present invention.
The cylinders in the blocks 6 are arranged in opposed pairs and for each opposed pair there is an operating unit which is clearly shown in Figure 4 and which consists of a pair of pistons I0', IIJ connected by a spider II, this spider II consists of a pair of yokes I2, I2 connected at their upper and lower ends by bridge pieces a. The intermediate portions of the side members of the yokes I2 have enlargements I3 apertured to receive bolts I4. As shown in Figure 3, each piston I0 has a laterally disposed boss I5 apertured to receive the corresponding bolt I4 and each -bolt I4 is equipped with a nut I6. Shims I'I may be placed between the boss I5 and the enlargement I3 of the corresponding yoke in order to compensate for wear between certain parts which will now be disclosed.
Numeral I8 denotes a shaft having a plurality of circumferentially grooved cams I9 thereon. The pistons ID are equipped with bearing units 20, each havin-g an outside race ring 2| which is ridable in the groove of the corresponding cam I9. The cams are arranged on the shaft in the ring order clearly shown in Figure 1 and further exemplified in Figure 6. The pistons will be prevented from any tendency to rotate by the fact that the rings 2l ride in the grooves of the cams I9. Any wear between the rings 2I and the cams I9 can be easily taken up by the addition of shims I'I.
While the foregoing specication sets forth the invention in specic terms, it is to be understood that numerous changes in the shape, Siae and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.
Having described the invention, what is claimed as new is:
l. In an internal combustion engine, a housin having a pair of opposed cylinders projecting from cylinders and having bosses projecting from opposite sides of the inner ends thereof, a spider rigidly connecting the adjacent ends of said pistons and embodying rigidly connected yokes having spaced side members extending transversely of the pistons at opposite sides of the latter and directly inwardly of said bosses, said side members merging at their upper and lower ends, and bridge pieces connecting adjacent merged ends of the yokes, said side members having intermediate enlargements, bolts passing'through said bosses and said enlargements to rigidly connect the pistons to the spider, a shaft extending through the housing centrally between the cylinders, a circular cam eccentrically secured on said shaft, and rotatable within the spider, and roller elements mounted in the inner ends of the pistons and engaging the periphery of said cam.
2. In an internal combustion engine, a housing having a pair of opposed cylinders projecting from. opposite sides thereof, pistons reciprocable in said cylinders and having `bosses projecting from opposite sides of the inner ends thereof, a spider rigidly connecting the adjacent ends of said pistons and embodying rigidly connected yokes having spaced side members extending transversely of the pistons at opposite sides of the latter and directly inwardly of said bosses, said side members merging at their upper and lower ends, and bridge pieces connecting adjacent merged ends of the yokes, said side members having intermediate enlargements, bolts passing through said bosses and said enlargements to rigidly connect the pistons to the spider, a shaft extending through the housing centrally between the cylinders, a circular cam eccentrically secured 5 o'f the cam.
on said shaft, and rotatable Within the spider, and roller elements mounted in the inner ends JAMES B. PUTNAM.
US493591A 1943-07-05 1943-07-05 Internal-combustion engine Expired - Lifetime US2355011A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913914A (en) * 1955-02-26 1959-11-24 Klane Hermann Reciprocating piston internal combustion engine
US2936632A (en) * 1955-06-27 1960-05-17 John E Palmer Anti-friction drive means
US3017779A (en) * 1957-07-10 1962-01-23 Albert P Beals Reciprocating drive mechanism
US3067624A (en) * 1959-04-16 1962-12-11 Norton Tool Company Ltd Pumps, compressors and engines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913914A (en) * 1955-02-26 1959-11-24 Klane Hermann Reciprocating piston internal combustion engine
US2936632A (en) * 1955-06-27 1960-05-17 John E Palmer Anti-friction drive means
US3017779A (en) * 1957-07-10 1962-01-23 Albert P Beals Reciprocating drive mechanism
US3067624A (en) * 1959-04-16 1962-12-11 Norton Tool Company Ltd Pumps, compressors and engines

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