US1039037A - Independent inside valve-drive for steam-engines. - Google Patents
Independent inside valve-drive for steam-engines. Download PDFInfo
- Publication number
- US1039037A US1039037A US42615908A US1908426159A US1039037A US 1039037 A US1039037 A US 1039037A US 42615908 A US42615908 A US 42615908A US 1908426159 A US1908426159 A US 1908426159A US 1039037 A US1039037 A US 1039037A
- Authority
- US
- United States
- Prior art keywords
- rod
- drive
- pitman
- valve
- steam
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/16—Means for transmitting drive
- B60S1/166—Means for transmitting drive characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
-
- 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
- F16H21/40—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 oscillating 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
- Y10T74/18184—Crank, pitman, and lever
Definitions
- the object of our invention is to avoid all the afore-named disadvantages by placing the mechanism entirely inside the engine room where it is protected and is also easily accessible for maintenance, oiling, cleaning, etc.
- Figure (1) is a side view of one arrangement of our device, showing the method of attaching the essential parts.
- Fig. (2) is a plan of the same. This arrangement is used for driving a valve, which for its proper movement must reach its extreme point of travel when the engine crank is on the quarter.
- Fig. (3) is a side view of another arrangement of our valve drive, and
- Fig. (4) is a plan of the same. This arrangement is used for driving a valve, which for its proper movement must reach its extreme point of travel when the engine crank is on the center.
- Fig. 5 is a detail elevation of the rod 4: and the sliding box.
- Fig. 6 is a detail plan view of the same.
- Fig. 7 is a detail elevation of the rod 9 and the sliding box 10.
- Fig. 8 is a plan view of the same.
- the numeral 1 designates the engine pitman, with the crank 2, as usually arranged on an engine.
- the numeral 3 is a pivotal box or connection preferably attached to the pitman as shown.
- the numeral 4 designates the drive rod on which the box or connection 3 slides.
- the rod l is preferably pivoted by being attached to rock shaft 5, but may be pivoted at any other suitable point. It is not necessary that the drive rod 4 should be parallel in any respect with the center line of the engine, in fact it may be curved as shown in Fig. 3, numeral 9 and hereinafter more particularly described.
- valve rod 7 treme lower point of travel of pitman giving the after point of travel to valve rod 7.
- the pivotal box 10 is attached to the cross head 6, but may be attached to pitman 1, and give practically the same re sultant valve motion.
- the box or connection slides each comprise a pair of members as clearly illustrated in the several figures of the drawing.
- One of these members is adapted to be secured to the pitman and to project a suitable distance therefrom.
- the second member is pivoted at a right angular plane to the first member so that the said second member is free to swing upon the first member and thus facilitating the operation of the resilient rod 4.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
R. EATON & G. L. KEITH. INDEPENDENT INSIDE VALVE DRIVE FOR sTBAMENGINBs. APPLICATION FILED APB.9, 1908.
1,039,037, Patented Sept. 17,1912.
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4 I I g g fi w N ATTORNEY.
ITNITED STATES PATENT OFFICE.
ROBERT EATON AND GEORGE L- KEITI-I, OF LAKE CITY, MINNESOTA, ASSIGNOBS TO GILLETT 8a EATON, OF LAKE CITY, MINNESOTA, COP'ARTNERS.
noeaoev.
Specification of Letters Patent.
Patented Sept. 17, 1912.
Application filed. April 9, 1908. Serial No. 426,159.
To all whom it may concern:
Be it known that we, ROBERT EATON and GEORGE L. KEITH, citizens of the United States, residing at the city of Lake City, in the county of WVabasha and State of Minnesota, have invented certain Improvements in Independent Inside Valve-Drives for Steam- Engines, More Especially Steam-- boat-Engines.
Heretofore valves have been driven by eccentrics, or cams, on the engine shaft and, in case of stern wheel steam boat engines, the wheel shaft at the stern of the boat. When located on the wheel shaft the cam, or eccentric rods being exposed, are frequently broken or disabled by debris, ropes, etc., carried up by the wheel, thus disabling the boat, and further it is difficult to get at the mechanism for oiling, repairs, etc., and further is more liable to wear from sand and rit.
The object of our invention is to avoid all the afore-named disadvantages by placing the mechanism entirely inside the engine room where it is protected and is also easily accessible for maintenance, oiling, cleaning, etc.
We have illustrated our improved valve drive by means of the accompanying drawings, in which,
Figure (1) is a side view of one arrangement of our device, showing the method of attaching the essential parts. Fig. (2) is a plan of the same. This arrangement is used for driving a valve, which for its proper movement must reach its extreme point of travel when the engine crank is on the quarter. Fig. (3) is a side view of another arrangement of our valve drive, and Fig. (4) is a plan of the same. This arrangement is used for driving a valve, which for its proper movement must reach its extreme point of travel when the engine crank is on the center. Fig. 5 is a detail elevation of the rod 4: and the sliding box. Fig. 6 is a detail plan view of the same. Fig. 7 is a detail elevation of the rod 9 and the sliding box 10. Fig. 8 is a plan view of the same.
Similar figures refer to similar parts throughout the several views.
Referring further to the drawing for detailed description of the operative parts and their connections, the numeral 1 designates the engine pitman, with the crank 2, as usually arranged on an engine.
The numeral 3, is a pivotal box or connection preferably attached to the pitman as shown.
The numeral 4, designates the drive rod on which the box or connection 3 slides. The rod l, is preferably pivoted by being attached to rock shaft 5, but may be pivoted at any other suitable point. It is not necessary that the drive rod 4 should be parallel in any respect with the center line of the engine, in fact it may be curved as shown in Fig. 3, numeral 9 and hereinafter more particularly described.
The movement of pitman 1, and with it the pivotal box 3 up and down as the wheel shaft revolves, gives a forwardand backward motion to valve rod 7, which in turn operates the valve, viz., the extreme upward point of travel of pitman giving the forward point of travel to the valve rod 7 the ex-.
treme lower point of travel of pitman giving the after point of travel to valve rod 7.
In Fig. 3, the pivotal box 10 is attached to the cross head 6, but may be attached to pitman 1, and give practically the same re sultant valve motion.
It will be seen by Fig. 3, that the curve drive rod 9 is at its lowest point of motion with the result that valve rod 11 is at its extreme point of travel to the right, the crank being on the inner center. It will be noted thatthe cross heads 6 in all the devices is provided with the rearwardly extending piston rod and that the said cross heads are adapted to slide upon the usual engine bed. The dotted lines show curved drive rod 9 and valve rod 11 with the crank in the opposite position.
We are aware that patents have been granted for inside valve drives taking the motion from the pitman. We therefore do not claim broadly the use of the pitman for driving valves. The box or connection slides each comprise a pair of members as clearly illustrated in the several figures of the drawing. One of these members is adapted to be secured to the pitman and to project a suitable distance therefrom. The second member is pivoted at a right angular plane to the first member so that the said second member is free to swing upon the first member and thus facilitating the operation of the resilient rod 4. These have all, as far as our search could be extended, had the slide attached to the pitman, the pivotal box 3 being attached'to the end of a lever, o have also failed to find any instance of a curved rod as ourvalve drive'rod 9 Fig. 3 and Fig. 4, being used.
What we do claim for our invention and desire to secure byLetters Patent is The combination with a steam engine having the usual crank shaft, crank arm, pitman, cross head and guide bars therefor, valve stem, and piston rod, of a rocker arm pivotally mounted in a bearing situated upon the engine frame adjacent the inner end of the guide bars, the upper end of said rocker arm being pivotally connected to the valve stem, said rocker arm provided intermediate of its ends with a transverse opening, a cylindrical rod adapted to have one of its ends mounted in said rocker arm opening ,so that it will extend longitudinally with respect to the pitman, a support rigidly .fastened to the upper surface of the pitman at a point intermediate of its length and having a horizontal opening therein extending transversely with respect to the lon- Copies of this patent may be obtained for five cents each, by addressing gitudinal axis of the pitman, aswiveled b0x- H support the free end of said rod so that the rod will be in a horizontal position when the crank arm of the engine is on dead cen ter, and said boxing being adapted to slide upon the said rod so that when the crank end of the pitman moves into either a downward or upward position the free end of the rod will be depressed or elevated thus imparting through the medium of the rocker arm reciprocating motion to the valve stem.
In Witness whereof, we have hereunto subscribed our names at Lake City, Minn, this 6th day of April A. D. 1908.
ROBT. EATON. GEOR GE L. KEITH.
In presence of-'.-
GEORGE H. HAMMOND, O. BEOKMAN.
the f Commissioner of Patents,
Washington, D. G.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42615908A US1039037A (en) | 1908-04-09 | 1908-04-09 | Independent inside valve-drive for steam-engines. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US42615908A US1039037A (en) | 1908-04-09 | 1908-04-09 | Independent inside valve-drive for steam-engines. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1039037A true US1039037A (en) | 1912-09-17 |
Family
ID=3107312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US42615908A Expired - Lifetime US1039037A (en) | 1908-04-09 | 1908-04-09 | Independent inside valve-drive for steam-engines. |
Country Status (1)
Country | Link |
---|---|
US (1) | US1039037A (en) |
-
1908
- 1908-04-09 US US42615908A patent/US1039037A/en not_active Expired - Lifetime
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