GB385410A - Improvements in or relating to fluid pressure braking systems - Google Patents

Improvements in or relating to fluid pressure braking systems

Info

Publication number
GB385410A
GB385410A GB3305431A GB3305431A GB385410A GB 385410 A GB385410 A GB 385410A GB 3305431 A GB3305431 A GB 3305431A GB 3305431 A GB3305431 A GB 3305431A GB 385410 A GB385410 A GB 385410A
Authority
GB
United Kingdom
Prior art keywords
pedal
pressure
brake
valve
cylinder
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
GB3305431A
Original Assignee
Edward Bishop Boughton
Willie Emmott
Denis Tabor Brock
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 Edward Bishop Boughton, Willie Emmott, Denis Tabor Brock filed Critical Edward Bishop Boughton
Priority to GB3305431A priority Critical patent/GB385410A/en
Publication of GB385410A publication Critical patent/GB385410A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16Master control, e.g. master cylinders
    • B60T11/18Connection thereof to initiating means

Abstract

385,410. Fluid-pressure brakes. BOUGHTON, E. B., EMMOTT, W., and BROCK, D. T., (trading as AUTOMOTIVE PRODUCTS CO.), Brock House, Langham Street, London. Nov. 28, 1931, No. 33054. [Class 103 (i).] In a hydraulic vehicle brake having manually operated low and high pressure pistons in a master cylinder unit 56 for taking up slack and applying pressure respectively and a valve automatically rendering inoperative the low pressure piston and rendering operative the high pressure piston when the slack in the system is taken up, an operative connection of a source of power with the master cylinder is controlled by a speed control of the vehicle. In one modification the speed control is the brake pedal which has a tread mounted on a slidable plunger adapted to actuate by means of Bowden wire the valve of a fluid pressure bellows connected to the brake pedal. In a further modification the accelerator pedal 72 when released is adapted to connect a brake cylinder 51 to a source of power, pipe 71, by means of a valve 58, and thus operate the pedal 54 with sufficient power to take up slack in the brake transmission by means of the low pressure cylinder of the unit 56. When the pedal 54 is then depressed by foot pressure for normal braking this pressure is just sufficient to cause the usual change-over valve of the unit 56 to function and allow the brake cylinder pressure to be applied to the brakes through the increased leverage provided by the high pressure cylinder of this unit 56. Greater force is applied to the pedal 54 by the foot for severe braking. To release the brakes when the pedal is released a valve 59 is provided in the brake cylinder supply pipe 69, 70 adapted to be opened when the pedal 54 approaches release position by a cam 79 on the pedal spindle, to connect the pipe 70 to atmospheric openings 68. The cam 79 engages a pin 80 on the valve stem and when the pedal is in release position the cam is clear of this pin and the atmospheric openings 68 are closed, and when the pedal is moved for application of the brakes the inside of the cam engages the left-hand side of the pin 80 and merely extends the two spring telescoping sections of the valve stem. Power may be derived from the intake manifold of the vehicle engine or an air compressor.
GB3305431A 1931-11-28 1931-11-28 Improvements in or relating to fluid pressure braking systems Expired GB385410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3305431A GB385410A (en) 1931-11-28 1931-11-28 Improvements in or relating to fluid pressure braking systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3305431A GB385410A (en) 1931-11-28 1931-11-28 Improvements in or relating to fluid pressure braking systems

Publications (1)

Publication Number Publication Date
GB385410A true GB385410A (en) 1932-12-29

Family

ID=10347909

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3305431A Expired GB385410A (en) 1931-11-28 1931-11-28 Improvements in or relating to fluid pressure braking systems

Country Status (1)

Country Link
GB (1) GB385410A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770223A (en) * 1954-04-02 1956-11-13 Kelsey Hayes Wheel Co Fluid pressure operated motor
US6155385A (en) * 1997-10-15 2000-12-05 Rover Group Limited Vehicle brake systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770223A (en) * 1954-04-02 1956-11-13 Kelsey Hayes Wheel Co Fluid pressure operated motor
US6155385A (en) * 1997-10-15 2000-12-05 Rover Group Limited Vehicle brake systems

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