GB553803A - Improvements in the control of variable delivery pumps - Google Patents

Improvements in the control of variable delivery pumps

Info

Publication number
GB553803A
GB553803A GB1640941A GB1640941A GB553803A GB 553803 A GB553803 A GB 553803A GB 1640941 A GB1640941 A GB 1640941A GB 1640941 A GB1640941 A GB 1640941A GB 553803 A GB553803 A GB 553803A
Authority
GB
United Kingdom
Prior art keywords
actuated
pump
pilot pump
lever
link
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
GB1640941A
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.)
John Shaw and Sons Salford Ltd
Original Assignee
John Shaw and Sons Salford 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 John Shaw and Sons Salford Ltd filed Critical John Shaw and Sons Salford Ltd
Priority to GB1640941A priority Critical patent/GB553803A/en
Publication of GB553803A publication Critical patent/GB553803A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06Control
    • F04B1/08Control regulated by delivery pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

553,803. Controlling variable delivery pumps. SHAW & SONS (SALFORD), Ltd., J., and SHAW, J. B. Dec. 19, 1941, No. 16409. [Class 135] A control mechanism for variable delivery pumps wherein a main pump is brought into operation by pressure generated by a pilot pump has a bye-pass valve arranged on the delivery side of the pilot pump which is held open when the control member, actuated either manually or automatically under the influence of the load on the delivery side, is placed in its neutral position to prevent the pilot pump building up an operating pressure. In the form shown in the Figures the main pump is regulated by a reciprocating member 4 actuated by a double-acting piston housed in a cylinder 5. The two sides of the cylinder are connected by pipes 13a, 13b to a reversible pilot pump 3. The control member 7 of this pump is actuated by a floating lever 6 pivoted at 4a to the member 4 and to a link 8 pivoted to a hand-lever 9. The conduit 13a is connected by a pipe 21 to a port 20 on the by-pass valve 15 mounted on a support 16. A piston valve 17 controlling the connection between the port 20 and a vent pipe 20a is actuated by a link 18 connected to a crank arm 19 coupled to the hand lever 9. The two sides of the control cylinder are fitted with relief valves 14. The hand-lever is coupled by a link 12a to a hydraulic telemotor transmitter 12. Where creeping in either direction from an intermediate neutral position is to be avoided a bye-pass valve is provided in both the pipes leading from the pilot pump. Specification 544,331 is referred to.
GB1640941A 1941-12-19 1941-12-19 Improvements in the control of variable delivery pumps Expired GB553803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1640941A GB553803A (en) 1941-12-19 1941-12-19 Improvements in the control of variable delivery pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1640941A GB553803A (en) 1941-12-19 1941-12-19 Improvements in the control of variable delivery pumps

Publications (1)

Publication Number Publication Date
GB553803A true GB553803A (en) 1943-06-07

Family

ID=10076798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1640941A Expired GB553803A (en) 1941-12-19 1941-12-19 Improvements in the control of variable delivery pumps

Country Status (1)

Country Link
GB (1) GB553803A (en)

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