US169719A - Improvement in governors and cut-offs for steam-engines - Google Patents

Improvement in governors and cut-offs for steam-engines Download PDF

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US169719A
US169719A US169719DA US169719A US 169719 A US169719 A US 169719A US 169719D A US169719D A US 169719DA US 169719 A US169719 A US 169719A
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valve
steam
engines
cut
governor
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/0971—Speed responsive valve control
    • Y10T137/108—Centrifugal mass type [exclusive of liquid]
    • Y10T137/1116—Periodically actuated valve

Definitions

  • Figure 1 is a sectional elevation of my improved governor, taken on line m a: of Fig. 2.
  • Fig. 2 is a top view.
  • Fig. 3 is a horizontal y y of Fig. l, and Fig. at is a section on line 2' z.
  • A is the hollow revolving and reciprocating cylindrical valve, having spiral ports B, and arranged in the stationary case 0, having spiral ports D, through which steam is admitted from pipe E, to pass down through F into the steam-chest containing the ordinary slidevalve.
  • the stem of this valve is geared by wheel G with the long pinion H, and it is also swiveled to the toothed rack I, the formergiving rotary and the latter reciprocating motion.
  • the long pinion is geared by the eccentric wheels J to the driver, connected with the engine, and worked by a chain to give posi-
  • the governor-spimlle passes through a concave or dished plate, Q, which is secured to the frame-work of the governor by a screw, V.
  • To the upper end of the governor-spindle is attached a horizontal frame or wheel, T,
  • rollers R move upon the concave plate Q, and operate in such a manner that when the engine is running at regular speed the wheel Lis held disengaged from the wheel M 5 but upon the least change of motion of the.
  • the rollers R and governor-shaft will be raised or lowered, thus causing the wheel M to engage
  • the toothed rack gears with the with the wheel L for raising or lowering the valve by this means regulating the closing of said valve, according to the pressure required to again bring the engine to speed, when the wheel M again resumes its disengaged position.
  • the springs U encircle the spindles S, and are adjusted to vary the force with which they act on the rollers by the ad justing-screws W.
  • the weight of the valve A and its adjuncts is counterbalanced by the weighted lever X, to enable the governor to have the same effect in both directions.
  • the valve A is geared to be opened with the commencement ofthe stroke of the engine.
  • the eccentric wheels by their irreguar motion, allow it to remain open th reequarters of the stroke, and insure the opening of it after the slide-valve has closed.
  • closing of valve A is regulated by the governor, and may be caused to close and cut off at one-eighth or three-quarters of the stroke.
  • the slide-valve is permitted to close before valve A opens.
  • the opening of the ports of said valve never takes place until slide-valve has closed; but it closes at any point from one-eighth to three-quarters of the stroke of the engine.
  • the rotary hollow valve A having spiral ports, in combination ⁇ vitha case havingspiral ports, the said valve having its weight counterbalanced, and being geared with the governor-pinion K by a toothed rack, I, substantially as specified.

Description

- M. IDfMILLER. GOVERNOR AND CUT'0FF FOR STEAM-ENGINES.
Patented Nov. 9,1875.
m m n o T T A NIPETERS, PHOTO-LITNOGRAFHER, WASHINGTON. D C.
- section on line tive motion.
UNITED STATES PATENT O FICE.
MARTIN D. MILLER, OF OSWEGO, KANSAS, ASSIGNOR TO HIMSELF AND JAMES T. PIERSON, OF SAME PLACE.
IMPROVEMENT IN GOVERNORS AND CUT-OFFS FOR STEAM-ENGINES.
Specification forming part of Letters Patent No. 169,719, dated November 9, 1875; application filed July 31, 1875.
To all whom it may concern Be it known that I, MARTIN D. MILLER, of Oswego, in the county of Labette and State of Kansas, have invented a new and Improved Governor and Gut-Off for Steam-Engines, of which the following is a specification The invention will first be described in connection with drawing, and then pointed out in the claims.
Figure 1 is a sectional elevation of my improved governor, taken on line m a: of Fig. 2. Fig. 2 is a top view. Fig. 3 is a horizontal y y of Fig. l, and Fig. at is a section on line 2' z.
Similar letters of reference indicate corresponding parts.
A is the hollow revolving and reciprocating cylindrical valve, having spiral ports B, and arranged in the stationary case 0, having spiral ports D, through which steam is admitted from pipe E, to pass down through F into the steam-chest containing the ordinary slidevalve. The stem of this valve is geared by wheel G with the long pinion H, and it is also swiveled to the toothed rack I, the formergiving rotary and the latter reciprocating motion. The long pinion is geared by the eccentric wheels J to the driver, connected with the engine, and worked by a chain to give posi- The governor-spimlle passes through a concave or dished plate, Q, which is secured to the frame-work of the governor by a screw, V. To the upper end of the governor-spindle is attached a horizontal frame or wheel, T,
which carries spindles S, rollers R, springs U, and screws W. I
The rollers R move upon the concave plate Q, and operate in such a manner that when the engine is running at regular speed the wheel Lis held disengaged from the wheel M 5 but upon the least change of motion of the.
engine from load or steam pressure, the rollers R and governor-shaft will be raised or lowered, thus causing the wheel M to engage The toothed rack gears with the with the wheel L for raising or lowering the valve; by this means regulating the closing of said valve, according to the pressure required to again bring the engine to speed, when the wheel M again resumes its disengaged position. i The springs U encircle the spindles S, and are adjusted to vary the force with which they act on the rollers by the ad justing-screws W.
The weight of the valve A and its adjuncts is counterbalanced by the weighted lever X, to enable the governor to have the same effect in both directions. The valve A is geared to be opened with the commencement ofthe stroke of the engine. The eccentric wheels, by their irreguar motion, allow it to remain open th reequarters of the stroke, and insure the opening of it after the slide-valve has closed. closing of valve A is regulated by the governor, and may be caused to close and cut off at one-eighth or three-quarters of the stroke. By giving it slow motion by the eccentric wheels while open, the slide-valve is permitted to close before valve A opens. Thus the opening of the ports of said valve never takes place until slide-valve has closed; but it closes at any point from one-eighth to three-quarters of the stroke of the engine.
' Having thus described my invention, I claim as new and desire to secure by Letters Patent-- l. The disengaging friction wheel, in combination with valve and easing, the weight of valve and fittings being balanced by ball and lever, as set forth, to enable the governor to regulate the speed with accuracy.
2. The rotary hollow valve A, having spiral ports, in combination \vitha case havingspiral ports, the said valve having its weight counterbalanced, and being geared with the governor-pinion K by a toothed rack, I, substantially as specified.
3. The combination, in a governor, of concave plate Q, rollers R, spindles S, springs U, and adjustingscrews W, substantially in the manner described.
MARTIN D. MILLER. Witnesses:
JOHN HAMBLIN, GEO. OROUsE.
The
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062311A (en) * 1960-03-09 1962-11-06 Gen Motors Corp Friction gear throttle control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062311A (en) * 1960-03-09 1962-11-06 Gen Motors Corp Friction gear throttle control

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