GB986585A - Improvements in or relating to hydraulic systems - Google Patents

Improvements in or relating to hydraulic systems

Info

Publication number
GB986585A
GB986585A GB15314/62A GB1531462A GB986585A GB 986585 A GB986585 A GB 986585A GB 15314/62 A GB15314/62 A GB 15314/62A GB 1531462 A GB1531462 A GB 1531462A GB 986585 A GB986585 A GB 986585A
Authority
GB
United Kingdom
Prior art keywords
shaft
bore
grooves
piston
tank
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
GB15314/62A
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.)
Molins Machine Co Ltd
Original Assignee
Molins Machine Co Ltd
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 Molins Machine Co Ltd filed Critical Molins Machine Co Ltd
Priority to GB15314/62A priority Critical patent/GB986585A/en
Priority to US272287A priority patent/US3168013A/en
Priority to DE1963M0044528 priority patent/DE1948226U/en
Priority to FR932061A priority patent/FR1375721A/en
Publication of GB986585A publication Critical patent/GB986585A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1433—End caps
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F15B15/1452—Piston sealings
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid

Abstract

986,585. Bearings. D. T. N. WILLIAMSON, and MOLINS ORGANISATION Ltd. April 17, 1963 [April 19, 1962; Nov. 21, 1962], Nos. 15314/62 and 44062/62. Heading F2A. [Also in Division B3] A machine tool slide 6 has a bore 5 therein which serves as a double-acting cylinder for a piston 4 which is integral with a shaft 1. The shaft 1 is mounted on blocks 2, 3 and is fixed against axial and rotary movement by the blocks. Ports 9, 10 connect the bore 5 with a tank 13, via a four-way selector 11 and a pump 12. Cylinder-heads 7, 8 are provided. A seal between the shaft 1 and the head 7 is formed by a pressure-pipe 14 communicating through a three-way connector 15 and conduits 16, 17 to inlets 18-20 which have enlargements 21-23 in communication with an annular space 24, which is the clearance between the shaft 1 and the head 7. Grooves 25-27 are equi-spaced between the inlets 18-20 and connect together circumferential grooves 28 and 29 which also are connected by a groove 30 to the tank 13. A similar seal is formed between the shaft and the head 8. The piston 4 has radial holes 32- 35 therein which communicate with an axial bore 36 in the shaft. The holes 32-35 are tapped at 37-40, receive restrictors 41 therein, and lead to cavities 43. The piston also has annular grooves 44, 45 therein which are connected by four channels 46. An axial bore 47 in the shaft connects with the annular groove 44 and has a pipe 48 connected thereto which leads to the tank 13. In operation, when pressure is connected to one side of the piston, the slide 6 moves until the selector 11 automatically stops the movement. Pressurized fluid is supplied by the pipe 14 to centre the shaft within the annular space 24. Some of the fluid leaks in an axial direction into the grooves 28, 29 and to the grooves 25-27 from where it passes, via the groove 30 to the tank 13. High pressure fluid escapes from the bore 5 and passes through a ring seal 31 in the head 7 or 8, so as to provide a liquid seal. Pressurized fluid is supplied to the axial bore 36 in the shaft so as to centre the piston 4 in the bore 5. Fluid escapes from the cavities 43 and enters the annular grooves 44, 45 from where it is returned to the tank 13, via the bore 47 and the pipe 48.
GB15314/62A 1962-04-19 1962-04-19 Improvements in or relating to hydraulic systems Expired GB986585A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB15314/62A GB986585A (en) 1962-04-19 1962-04-19 Improvements in or relating to hydraulic systems
US272287A US3168013A (en) 1962-04-19 1963-04-11 Hydraulic systems
DE1963M0044528 DE1948226U (en) 1962-04-19 1963-04-18 HYDRAULIC ACTUATION DEVICE, IN PARTICULAR FOR SEPARATING A MOVABLE LINK FROM A FIXED STATE.
FR932061A FR1375721A (en) 1962-04-19 1963-04-19 Device intended to achieve the seal between two members, one mobile, the other fixed

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB15314/62A GB986585A (en) 1962-04-19 1962-04-19 Improvements in or relating to hydraulic systems
FR932061A FR1375721A (en) 1962-04-19 1963-04-19 Device intended to achieve the seal between two members, one mobile, the other fixed

Publications (1)

Publication Number Publication Date
GB986585A true GB986585A (en) 1965-03-17

Family

ID=29404153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15314/62A Expired GB986585A (en) 1962-04-19 1962-04-19 Improvements in or relating to hydraulic systems

Country Status (2)

Country Link
FR (1) FR1375721A (en)
GB (1) GB986585A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128640B (en) * 1956-01-06 1962-04-26 Union Carbide Corp Device for the continuous extrusion of a mass which softens when heated
EP0585189A1 (en) * 1992-08-25 1994-03-02 Société des Usines QUIRI & Cie High performance hydraulic actuator with control of play
EP2037145A3 (en) * 2007-09-14 2009-07-08 ZF Friedrichshafen AG Actuating device
ITMO20120037A1 (en) * 2012-02-16 2013-08-17 Pama Spa LOW FRICTION CYLINDER-PISTON ASSEMBLY
DE102018218482A1 (en) * 2018-10-29 2020-04-30 Otto Bihler Handels-Beteiligungs-Gmbh LINEAR FEED DEVICE AND A PROJECT PROCESSING DEVICE EQUIPPED WITH IT

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128640B (en) * 1956-01-06 1962-04-26 Union Carbide Corp Device for the continuous extrusion of a mass which softens when heated
EP0585189A1 (en) * 1992-08-25 1994-03-02 Société des Usines QUIRI & Cie High performance hydraulic actuator with control of play
FR2695170A1 (en) * 1992-08-25 1994-03-04 Quiri Cie Usines High performance hydraulic cylinder with clearance control.
EP2037145A3 (en) * 2007-09-14 2009-07-08 ZF Friedrichshafen AG Actuating device
ITMO20120037A1 (en) * 2012-02-16 2013-08-17 Pama Spa LOW FRICTION CYLINDER-PISTON ASSEMBLY
DE102018218482A1 (en) * 2018-10-29 2020-04-30 Otto Bihler Handels-Beteiligungs-Gmbh LINEAR FEED DEVICE AND A PROJECT PROCESSING DEVICE EQUIPPED WITH IT

Also Published As

Publication number Publication date
FR1375721A (en) 1964-10-23

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