GB540921A - Improvements in or connected with the mechanical brake systems of winding engines, haulages and other rotating machines - Google Patents

Improvements in or connected with the mechanical brake systems of winding engines, haulages and other rotating machines

Info

Publication number
GB540921A
GB540921A GB969440A GB969440A GB540921A GB 540921 A GB540921 A GB 540921A GB 969440 A GB969440 A GB 969440A GB 969440 A GB969440 A GB 969440A GB 540921 A GB540921 A GB 540921A
Authority
GB
United Kingdom
Prior art keywords
pressure
piston
brake
brakes
supply
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
GB969440A
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 GB969440A priority Critical patent/GB540921A/en
Publication of GB540921A publication Critical patent/GB540921A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/26—Operating devices pneumatic or hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
    • B66D2700/035—Fluid operated braking devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

540,921. Fluid-pressure brakes. BELL, W. T., and CROMPTON, A. June 3, 1940, No. 9694. [Class 103 (i)] Mechanical brake systems for winding engines &c. have the brake lever 2 unweighted and normally actuated by a doubleacting pressure-operated device, such as a brake-engine 4, with a piston 5 working in a closed cylinder, which is directly connected at the upper end to a pressure medium supply and connected at the lower end through a control valve 8 to the same pressure medium supply. The direct pressure medium supply acts on the piston 5 in the "brakes on" direction and the pressure applied, when it is desired to release the brakes, through the control valve 8 acts in the opposite direction and is effective to lift the piston 5 to the "brakes off" position against the pressure direct from the supply by reason of acting on the lower and larger side of the piston 5. Means are also provided to apply the brakes upon failure of the pressure supply; for example a weighted lever 18 pivoted on the brakeoperating shaft 3 is connected through a lost-motion device 20 to the brake lever 2 and is normally kept raised by a connection to a piston 22 in a cylinder 21 connected to the pressure supply through a pipe 23 containing a sliding valve 25, which is held in the position shown to maintain the pressure in cylinder 21 by means of a piston 27 in a cylinder 28 connected to the pressure supply through a bye-pass 30, a one-way bye-pass pipe 31 being arranged to maintain the pressure in cylinder 21 against sudden demands for pressure arising from rapid action of the brake-engine 4. A pressure failure switch 33 connected in the pressure supply pipe 15 actuates emergency mechanism connected to the control plunger 13 to open the brake engine to exhaust. The piston 5 of the brake-engine is mechanically connected by a link system 16 to the plunger 13 in order to allow leakage past the brake-engine piston to escape to exhaust.
GB969440A 1940-06-03 1940-06-03 Improvements in or connected with the mechanical brake systems of winding engines, haulages and other rotating machines Expired GB540921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB969440A GB540921A (en) 1940-06-03 1940-06-03 Improvements in or connected with the mechanical brake systems of winding engines, haulages and other rotating machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB969440A GB540921A (en) 1940-06-03 1940-06-03 Improvements in or connected with the mechanical brake systems of winding engines, haulages and other rotating machines

Publications (1)

Publication Number Publication Date
GB540921A true GB540921A (en) 1941-11-05

Family

ID=9876965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB969440A Expired GB540921A (en) 1940-06-03 1940-06-03 Improvements in or connected with the mechanical brake systems of winding engines, haulages and other rotating machines

Country Status (1)

Country Link
GB (1) GB540921A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490941A (en) * 1946-05-27 1949-12-13 Bell William Thomas Fluid pressure brake with emergency weight operator
US2531055A (en) * 1947-12-23 1950-11-21 Westinghouse Air Brake Co Brake apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490941A (en) * 1946-05-27 1949-12-13 Bell William Thomas Fluid pressure brake with emergency weight operator
US2531055A (en) * 1947-12-23 1950-11-21 Westinghouse Air Brake Co Brake apparatus

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