US1120078A - Reversing-gear. - Google Patents

Reversing-gear. Download PDF

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Publication number
US1120078A
US1120078A US80461013A US1913804610A US1120078A US 1120078 A US1120078 A US 1120078A US 80461013 A US80461013 A US 80461013A US 1913804610 A US1913804610 A US 1913804610A US 1120078 A US1120078 A US 1120078A
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United States
Prior art keywords
reversing
arm
valve
spindle
gear
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Expired - Lifetime
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US80461013A
Inventor
Martin W Pauling
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Individual
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Priority to US80461013A priority Critical patent/US1120078A/en
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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
    • F01L29/00—Reversing-gear
    • F01L29/04—Reversing-gear by links or guide rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • 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
    • Y10T74/16—Alternating-motion driven device with means during operation to adjust stroke
    • Y10T74/1625—Stroke adjustable to zero and/or reversible in phasing
    • Y10T74/165—Driving lever with adjustable pivot point

Definitions

  • This invention relates to valve operating mechanism for reversing the slide valves o1' steam engines.
  • Figure 1 is a front view of a reversing gear constructed according to this invention.
  • Fig. 2 is a plan view; and
  • Fig. 3 is an end view of the same.
  • a supporting frame 2 ⁇ is provided and is of any approved construction.
  • the crank shaft 3 is journaled in suitable bearings in the frame, and an eccentric 4f is secured upon it in a suitable position to operate the valvespindle 5.
  • the valve-spindle 5 is pivoted by a pin 6 to one end of a parallel motion 7 formed in any approved way and preferably provided with parallel horizontal members 8, the lower of which is secured to the frame and which is pivotally connected with the upper member by vertical bars 9.
  • the eccentric is provided with an eccentric-strap 10 having a projecting arm 12 which is arranged diagonally of the axis of the valve-spindle.
  • a connecting-rod 14 is pivoted by a pin 15 to the middle part of the arm 12, and the other end of the connectingrod is pivoted by a pin 17 to the opposite end of the parallel motion from the pivot of the valve-spindle.
  • the reversing handle 18 is secured to one end of a shaft 19 which is pivoted in the frame, below the level of the crank shaft, and it is provided with any approved catch mechanism for holding it stationary, such as Ia toothed quadrant 21 and a pawl 22.
  • A, reversing lever 24 projects from the Patented Dec. S, 1914s.
  • 2G is a link which is pivoted by a pin Q5 to the free end oit the arm 12 on the eccentric-strap.
  • the other end of the link QG is pivoted by a pin 27 to the upper end o1 the reversing lever Q-i.
  • the lever 211 is arranged crosswise oit' the axis o1 the valve-spindle 5, and in that respect it is similar to the eccentric arm 19, although these two parts are not parallel, and the link which connects them pivotally is arranged diagonally between their opposite end portions.
  • the ends of the link 2G and the connecting-rod 14: are made adjustable so that all lost motion can be taken up.
  • the reversing lever 24 is arranged substantially vertically, as shown in the drawings, the valve gear is adapted vfor one direction oi2 motion oi. the engine and its crankshaft.
  • the direction oi motion is reversed by moving the reversing lever 24 downwardly te the right in Fig. 1 to a substantially horizontal position, so that the position of the strap on the eccentric is changed.
  • a reversing gear the combination, with a valve-spimlle, and a driving-shaft; of an eccentric secured on the driving shaft and provided with a strap having an arm which projects crosswise oi the valve-spindle, a reversing rock-shaft arranged adjacent to the 'tree end oit the said arm, a reversing lever secured to the rockshait and also projecting crosswise oi' the valve-spindle but in the opposite direction to the said arm, a reversing handle also secured to the rock-shaft, a link arranged diagonally between and pivoted to the said arm and reversing lever, and intermediate connections between the said arm and the valve-spindle.
  • a reversing gear the combination., with a valve-spindle, and a driving shaft; of an eccentric secured on the driving shaft and provided with a strap having an arm which projects crosswise of the valve-spin- ⁇ dle, a reversing rock-shaft arranged adjacent to the i'ree end of the said arm, areversing lever secured to the rccksha'ft and also projecting crosswise oi the valve-spindle but in the opposite direction to the said arm, a reversing handle also secured to the rolck shaft, a link arranged diagonally between In testimony whereof I have afxed my and plvoted to the sald arm and reverslng slgnature 1n the presence of tWo Wltnesses.
  • valve-spindle O. G. CONGDON.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)

Description

M. W. PAULING.
REVERSING GEAR.
APPLIGATION rILED Dnc.4, 1913 Patented Dec. 8, 1914,
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MARTIN W. P AULING, OF DOVER, MISSOURI.
REVERSING-GEAR.
Specification of Letters Patent.
metiers.
Application filed December 4, 1913.
To all whom t may concern Be it known that I, MARTIN W. PAULTNG, a citizen ot' the United States, residing at Dover, in the county of Lafayette and State of Missouri, have invented certain new and useful Improvements in Reversing Gear; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to valve operating mechanism for reversing the slide valves o1' steam engines.
It is specially adapted for use in connection with traction engines, and it consists in the novel construction and combination of the parts hereinafter 'fully described and claimed.
In the drawings, Figure 1 is a front view of a reversing gear constructed according to this invention. Fig. 2 is a plan view; and Fig. 3 is an end view of the same.
A supporting frame 2 `is provided and is of any approved construction. The crank shaft 3 is journaled in suitable bearings in the frame, and an eccentric 4f is secured upon it in a suitable position to operate the valvespindle 5. The valve-spindle 5 is pivoted by a pin 6 to one end of a parallel motion 7 formed in any approved way and preferably provided with parallel horizontal members 8, the lower of which is secured to the frame and which is pivotally connected with the upper member by vertical bars 9.
The eccentric is provided with an eccentric-strap 10 having a projecting arm 12 which is arranged diagonally of the axis of the valve-spindle. A connecting-rod 14 is pivoted by a pin 15 to the middle part of the arm 12, and the other end of the connectingrod is pivoted by a pin 17 to the opposite end of the parallel motion from the pivot of the valve-spindle.
The reversing handle 18 is secured to one end of a shaft 19 which is pivoted in the frame, below the level of the crank shaft, and it is provided with any approved catch mechanism for holding it stationary, such as Ia toothed quadrant 21 and a pawl 22.
A, reversing lever 24: projects from the Patented Dec. S, 1914s.
Serial No. 804,610.
shaft T19, and 2G is a link which is pivoted by a pin Q5 to the free end oit the arm 12 on the eccentric-strap. The other end of the link QG is pivoted by a pin 27 to the upper end o1 the reversing lever Q-i. The lever 211 is arranged crosswise oit' the axis o1 the valve-spindle 5, and in that respect it is similar to the eccentric arm 19, although these two parts are not parallel, and the link which connects them pivotally is arranged diagonally between their opposite end portions. The ends of the link 2G and the connecting-rod 14: are made adjustable so that all lost motion can be taken up. lVhen the reversing lever 24 is arranged substantially vertically, as shown in the drawings, the valve gear is adapted vfor one direction oi2 motion oi. the engine and its crankshaft. The direction oi motion is reversed by moving the reversing lever 24 downwardly te the right in Fig. 1 to a substantially horizontal position, so that the position of the strap on the eccentric is changed.
What I claim is:
1. In a reversing gear, the combination, with a valve-spimlle, and a driving-shaft; of an eccentric secured on the driving shaft and provided with a strap having an arm which projects crosswise oi the valve-spindle, a reversing rock-shaft arranged adjacent to the 'tree end oit the said arm, a reversing lever secured to the rockshait and also projecting crosswise oi' the valve-spindle but in the opposite direction to the said arm, a reversing handle also secured to the rock-shaft, a link arranged diagonally between and pivoted to the said arm and reversing lever, and intermediate connections between the said arm and the valve-spindle.
2. In a reversing gear, the combination., with a valve-spindle, and a driving shaft; of an eccentric secured on the driving shaft and provided with a strap having an arm which projects crosswise of the valve-spin-` dle, a reversing rock-shaft arranged adjacent to the i'ree end of the said arm, areversing lever secured to the rccksha'ft and also projecting crosswise oi the valve-spindle but in the opposite direction to the said arm, a reversing handle also secured to the rolck shaft, a link arranged diagonally between In testimony whereof I have afxed my and plvoted to the sald arm and reverslng slgnature 1n the presence of tWo Wltnesses.
lever, a connecting-rod pvoted to the said MARTIN l/V. PAULING. arm, and a parallel link motion arranged l'Vtnesses:
between the said connecting-rod and the T. H. CLAYTON,
valve-spindle. O. G. CONGDON.
Copies: of this patent may be obtained for five cents each, by addressing the commissioner of Patents, Waahingtnn, B. 6..
US80461013A 1913-12-04 1913-12-04 Reversing-gear. Expired - Lifetime US1120078A (en)

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