GB852124A - Improvements in or relating to control devices for hydraulically actuated jacking orparking mechanisms - Google Patents

Improvements in or relating to control devices for hydraulically actuated jacking orparking mechanisms

Info

Publication number
GB852124A
GB852124A GB943358A GB943358A GB852124A GB 852124 A GB852124 A GB 852124A GB 943358 A GB943358 A GB 943358A GB 943358 A GB943358 A GB 943358A GB 852124 A GB852124 A GB 852124A
Authority
GB
United Kingdom
Prior art keywords
spool
pump
valve
port
detent
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
GB943358A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB943358A priority Critical patent/GB852124A/en
Publication of GB852124A publication Critical patent/GB852124A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
    • B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
    • B60S9/205—Power driven manoeuvring fittings, e.g. reciprocably driven steppers or rotatably driven cams
    • B60S9/21—Power driven manoeuvring fittings, e.g. reciprocably driven steppers or rotatably driven cams comprising a rotatably driven auxiliary wheel or endless track, e.g. driven by ground wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

852,124. Jacking motor vehicles. BUTTERWORTH, A. J. March 23, 1959 [March 24, 1958], No. 9433/58. Class 79(3). In a hydraulically operated jacking or parking mechanism wherein a hydraulic ram on each side of a vehicle is connected through a valve mechanism to a pump driven by the vehicle engine, the valve mechanism comprises detent means which are released only when the vehicle is stationary or travelling at slow speed and means are provided for automatically cutting off communication between the ram and the pump when the engine stops. The valve comprises. ports 11, 12, 13 and 14 and spool 29, the port 11 being connected to a fluid reservoir 7 and inlet of the pump 5. The outlet of the pump 5 is connected to port 13 and port 12 is connected to the hydraulic ram cylinders 36. Port 14 is connected to the reservoir 7, through a filter 35. In the position shown in Fig. 1, the pump is energizing the hydraulic ram through 13 and 12, ports 11 and 14 being cut off. Movement of the valve spool to the right, Fig. 3, connects 11 to 12 and 13 to 14 allowing the pump to short circuit through the reservoir. The spool is normally held in the latter position by engagement of a detent 22 with a groove 23. The detent may be retracted by an electromagnet 25 which is energized by a switch which may only be closed when the engine is in a low or reverse gear-dependent upon the position of the change speed lever or selector. When the detent is withdrawn the valve spool is operated manually through a cable connection to the facia panel. The cylindrical portion 19 of the valve spool is smaller than the portions 20 and 21 and when the spool is in the position whereby the pump is operating the ram, the pressure difference due to the differing diameters holds the spool in the operating position against the pressure of a retaining spring 31, in which position it will remain until the engine stops or the spool is manually returned. Sealing rings 33 and 34 are provided. The hydraulic ram mechanism may comprise one or a pair of ground engaging rollers, Figs. 5 and 8, and may comprise a roller 47, Fig. 4, engaging a rim 48 of a driven wheel and through which and a pair of bevel gears, the drive may be transmitted to the ground engaging roller. Specifications 832,679 and 842,331 are referred to.
GB943358A 1958-03-24 1958-03-24 Improvements in or relating to control devices for hydraulically actuated jacking orparking mechanisms Expired GB852124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB943358A GB852124A (en) 1958-03-24 1958-03-24 Improvements in or relating to control devices for hydraulically actuated jacking orparking mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB943358A GB852124A (en) 1958-03-24 1958-03-24 Improvements in or relating to control devices for hydraulically actuated jacking orparking mechanisms

Publications (1)

Publication Number Publication Date
GB852124A true GB852124A (en) 1960-10-26

Family

ID=9871889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB943358A Expired GB852124A (en) 1958-03-24 1958-03-24 Improvements in or relating to control devices for hydraulically actuated jacking orparking mechanisms

Country Status (1)

Country Link
GB (1) GB852124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185237A (en) * 1960-12-07 1965-05-25 Butterworth Archibald James Hydraulic rams

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185237A (en) * 1960-12-07 1965-05-25 Butterworth Archibald James Hydraulic rams
US3186308A (en) * 1960-12-07 1965-06-01 Butterworth Archibald James Hydraulic rams

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