GB603115A - Improvements in or relating to propellers with adjustable blades - Google Patents

Improvements in or relating to propellers with adjustable blades

Info

Publication number
GB603115A
GB603115A GB25567/45A GB2556745A GB603115A GB 603115 A GB603115 A GB 603115A GB 25567/45 A GB25567/45 A GB 25567/45A GB 2556745 A GB2556745 A GB 2556745A GB 603115 A GB603115 A GB 603115A
Authority
GB
United Kingdom
Prior art keywords
casing
shaft
propeller
propeller shaft
servo
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
Application number
GB25567/45A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of GB603115A publication Critical patent/GB603115A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H3/081—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft
    • B63H3/082—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft the control element being axially reciprocatable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/38—Blade pitch-changing mechanisms fluid, e.g. hydraulic
    • B64C11/42—Blade pitch-changing mechanisms fluid, e.g. hydraulic non-automatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
    • B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
    • B63H2003/088—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid characterised by supply of fluid actuating medium to control element, e.g. of hydraulic fluid to actuator co-rotating with the propeller

Abstract

603,115. Fluid-pressure servo motor-control systems. SULZER FRERES SOC. ANON. Oct. 2, 1945, No. 25567. Convention date, Dec. 2, 1944. [Class 135] Apparatus for adjusting the blades of a propeller whilst turning comprises a fluid-pressure servomotor which rotates with the propeller shaft and is enclosed in a stationary casing sealed where the propeller shaft passes through it. In an embodiment, the servomotor comprises twin pistons 46, 47 working in a cylinder interposed in the propeller shaft 2. When the pitch of the propeller blades is to be adjusted, a signal is transmitted through a hydraulic circuit at 12 to move a piston 11 against its spring loading 68. This movement is transmitted to a slide 66 and then through a floating lever 67 to a piston valve 10 which controls the flow and exhaust of pressure fluid through lines 17, 18, grooves 19, 20, and passages 63, 64, to and from the servo-cylinder. The subsequent movement of the servo-piston moves rod 48 to alter the pitch of the propeller blades and also moves a disc 74 along the shaft 2, the disc being provided with a groove in which the other end of the floating lever is housed so that the control valve 10 will be recentred to the neutral position shown. The pistons may be replaced by rotary elements of the helical vane type. The control valve casing is formed in two sections 4, 5 constituting a bearing for the rotating servo-cylinder. The stationary casing is supported from a rigid framing by springs of which there may be one or more on each side, and abutments limit the rolling action of the casing. A pump carried inside the stationary casing and driven from shaft 2 draws oil from a sump formed in the casing and delivers it to an external reservoir. The propeller shaft where it passes through one end of the casing is provided with lubricating holes by which oil is led to the space between the propeller shaft and shaft 48. Oil leaking past the stuffing box is led back into the stationary casing.
GB25567/45A 1944-12-02 1945-10-02 Improvements in or relating to propellers with adjustable blades Expired GB603115A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH250261T 1944-12-02
CH248141T 1944-12-02

Publications (1)

Publication Number Publication Date
GB603115A true GB603115A (en) 1948-06-09

Family

ID=41228725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25567/45A Expired GB603115A (en) 1944-12-02 1945-10-02 Improvements in or relating to propellers with adjustable blades

Country Status (4)

Country Link
US (1) US2513546A (en)
CH (2) CH248141A (en)
FR (1) FR916934A (en)
GB (1) GB603115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754923A (en) * 1952-06-30 1956-07-17 John H Strandell Single crank controllable pitch propeller

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH279159A (en) * 1946-10-07 1951-11-15 Johannes Liaaen Nils Propeller adjustment device with servo motor for ships, pumps or turbines.
US2798564A (en) * 1952-06-30 1957-07-09 John H Strandell Mechanical controllable pitch propeller
US2693243A (en) * 1952-07-23 1954-11-02 John H Strandell Double crank controllable pitch propeller
US2753847A (en) * 1952-08-14 1956-07-10 Reynolds Metals Co Apparatus for hydraulic production of metallic extrusions and forgings
US2739571A (en) * 1952-12-29 1956-03-27 Northrop Aircraft Inc Cylinder assembly for hydraulic actuator
NL84649C (en) * 1953-10-26
US2954830A (en) * 1954-05-27 1960-10-04 Cooper Bessemer Corp Propeller pitch control mechanism
US2944520A (en) * 1954-09-13 1960-07-12 Swanson Bernard August Fluid motor with rotary and/or rectilinear movable piston
US2992688A (en) * 1957-02-18 1961-07-18 Hartzell Propeller Inc Adjustable pitch propeller
GB828942A (en) * 1957-04-18 1960-02-24 Ernest Charles Hatcher Improvements relating to propellers or the like having variable-pitch blades
CH410822A (en) * 1963-04-29 1966-03-31 Karlstad Mekaniska Ab Adjustment device on turbines, pumps or propellers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1945071A (en) * 1927-08-31 1934-01-30 Harry E Popp Hydraulic turbine
US2028448A (en) * 1935-04-03 1936-01-21 Leroy F Harza Hydraulic turbine
US2244770A (en) * 1937-01-15 1941-06-10 Englesson John Elov Operating device for propellers, turbine wheels, and pump wheels having rotatable blades
US2210009A (en) * 1938-08-10 1940-08-06 Robert J Ruths Hydraulic operated variable pitch propeller
GB553929A (en) * 1941-03-08 1943-06-10 Escher Wyss Maschf Ag Improvements in or relating to variable-pitch propellers
US2456361A (en) * 1943-08-14 1948-12-14 Sulzer Ag Device for adjusting the blades of ships' propellers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2754923A (en) * 1952-06-30 1956-07-17 John H Strandell Single crank controllable pitch propeller

Also Published As

Publication number Publication date
FR916934A (en) 1946-12-19
CH248141A (en) 1947-04-15
US2513546A (en) 1950-07-04
CH250261A (en) 1948-06-01

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