US1210343A - Valve-operating mechanism. - Google Patents

Valve-operating mechanism. Download PDF

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Publication number
US1210343A
US1210343A US67430412A US1912674304A US1210343A US 1210343 A US1210343 A US 1210343A US 67430412 A US67430412 A US 67430412A US 1912674304 A US1912674304 A US 1912674304A US 1210343 A US1210343 A US 1210343A
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valve
operating mechanism
rotary
spindle
boss
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US67430412A
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Edmund Hawthorne Micklewood
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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
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L7/026—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with two or more rotary valves, their rotational axes being parallel, e.g. 4-stroke

Definitions

  • This invention relates to mechanism for operating a rotary valve controlling the admission and discharge of the working fluid of engines and particularly of an internal combustion engine, which mechanism is adapted to turn the valve rapidly with intermediate periods during which the valve is at rest or comparatively at rest and which enables a complete cycle of opening and closing of the valve to be divided into unequal periods of action.
  • FIG. 1 represents a section through a rotary valve assembled in a seating associated with the working cylinder of an engine, the improved valve-operating mechanism being shown applied to the rotary valve, and Fig. 2 is a face view of the improved valve-operating mechanism as viewed from the left in Fig. l.
  • the improved valve operating mechanism comprises a stationary cylindrical boss a on which is mounted a disk or wheel y which can be turned by any suitable means.
  • valve Z From the face of wheel f extends'a pin Z which engages in a longitudinal slot Z9 in a bar or block 5 which is rigidly secured to the spindle s of the rotary valve Z.
  • VThe valve Z is mounted in its seating e fixed to the wall c of the working cylinder of the engine and is shown controlling the intake and exhaust ports or passages i0, 7?', respectively, the valve having a port 292 therein which alternately establishes communication between the ports 79 and p and the explosion chamber O above the engine piston P.
  • the spindle s is journaled in the boss a in eccentric relation therewith.
  • the bar Z Owing to the relative position of the axis of the wheel f and the valve spindle s not being co-axial, the bar Z), when wheel f is rotated at uniform speed, is driven by pin (Z and has imparted to it a variable rotary speed which is transmitted to the valve spindle s and valve Z.
  • the latter can thus be arranged to make a longer dwell over one part of a complete turn than over the other portion thereof, for the extent of variation of the movement of the valve is governed by the eccentricity of its axis with respect to the axis of thewheel 7.
  • a rotary port-controlling valve and means adapted t0 impart a variable rotary speed to the valve, said means consisting of a stationary cylindrical boss carried by the engine, a spindle operatively connected with the valve and journaled in the boss in eccentric relation with the axis thereof, a revoluble member mounted co-axially on the boss, a rotary member Y secured to the spindle, a driving connection between the said two members, comprising a pin on the revoluble member slidably engaging a slot in said rotary member, and means for driving the irst said member.

Description

Till: NuRRls Pernis ca.. wAsHmanm. n. c.
VALVE-OPERATING MECHANISIVI.
Application filed January 30, 1912.
To @ZZ 'whom it may concern Be it known that I, EDMUND HAWTHORNE MronLnwooD, a subject of the King of Great Britain, residing in Devon, England, and whose post-office address is 5 St. Michaels Terrace, Plymouth, in the county of Devon, England, consulting engineer, have invented certain new and useful Improvements in Valve-Operating Mechanism, of which the following is a speciication.
This invention relates to mechanism for operating a rotary valve controlling the admission and discharge of the working fluid of engines and particularly of an internal combustion engine, which mechanism is adapted to turn the valve rapidly with intermediate periods during which the valve is at rest or comparatively at rest and which enables a complete cycle of opening and closing of the valve to be divided into unequal periods of action.
The invention is illustrated in the accompanying drawing, wherein- Figure l represents a section through a rotary valve assembled in a seating associated with the working cylinder of an engine, the improved valve-operating mechanism being shown applied to the rotary valve, and Fig. 2 is a face view of the improved valve-operating mechanism as viewed from the left in Fig. l.
The improved valve operating mechanism comprises a stationary cylindrical boss a on which is mounted a disk or wheel y which can be turned by any suitable means.
From the face of wheel f extends'a pin Z which engages in a longitudinal slot Z9 in a bar or block 5 which is rigidly secured to the spindle s of the rotary valve Z. VThe valve Z is mounted in its seating e fixed to the wall c of the working cylinder of the engine and is shown controlling the intake and exhaust ports or passages i0, 7?', respectively, the valve having a port 292 therein which alternately establishes communication between the ports 79 and p and the explosion chamber O above the engine piston P. The spindle s is journaled in the boss a in eccentric relation therewith.
Specification of Letters Patent.
Patented Dec. 26, 1916.
Serial No. 674,304.
Owing to the relative position of the axis of the wheel f and the valve spindle s not being co-axial, the bar Z), when wheel f is rotated at uniform speed, is driven by pin (Z and has imparted to it a variable rotary speed which is transmitted to the valve spindle s and valve Z. The latter can thus be arranged to make a longer dwell over one part of a complete turn than over the other portion thereof, for the extent of variation of the movement of the valve is governed by the eccentricity of its axis with respect to the axis of thewheel 7.
Having thus described my invention and the best means I know of carrying the same into practical effect, I claim 1. The combination of a rotary port-controlling valve, and means adapted to impart a variable rotary speed to the valve, said means consisting of a stationary cylindrical boss carried by the engine, a spindle operatively connected with the valve and journaled in the boss in eccentric relation with the axis thereof, a revoluble member mounted co-axially on the boss, a rotary member secured to the spindle, a driving connection between the said two members, and means for driving the first said member.
2. The combination of a rotary port-controlling valve, and means adapted t0 impart a variable rotary speed to the valve, said means consisting of a stationary cylindrical boss carried by the engine, a spindle operatively connected with the valve and journaled in the boss in eccentric relation with the axis thereof, a revoluble member mounted co-axially on the boss, a rotary member Y secured to the spindle, a driving connection between the said two members, comprising a pin on the revoluble member slidably engaging a slot in said rotary member, and means for driving the irst said member.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
EDMUND HAWTHORNE MICKLEWOOD. vWitnesses:
S. CARLILE DAVIS, GEORGE ANDREWS.
Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, I). G.
US67430412A 1912-01-30 1912-01-30 Valve-operating mechanism. Expired - Lifetime US1210343A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746953C (en) * 1940-06-27 1944-09-01 Eduard Woydt Dr Ing Rotary valve control, especially for the outlet of two-stroke internal combustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746953C (en) * 1940-06-27 1944-09-01 Eduard Woydt Dr Ing Rotary valve control, especially for the outlet of two-stroke internal combustion engines

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