GB884530A - Improvements relating to tensioning and holding lever mechanism, for example for brake-linkages - Google Patents

Improvements relating to tensioning and holding lever mechanism, for example for brake-linkages

Info

Publication number
GB884530A
GB884530A GB3869/59A GB386959A GB884530A GB 884530 A GB884530 A GB 884530A GB 3869/59 A GB3869/59 A GB 3869/59A GB 386959 A GB386959 A GB 386959A GB 884530 A GB884530 A GB 884530A
Authority
GB
United Kingdom
Prior art keywords
lever
hand lever
pawl
pivoted
hand
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
GB3869/59A
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
Priority claimed from DESCH23491A external-priority patent/DE1170718B/en
Application filed by Individual filed Critical Individual
Publication of GB884530A publication Critical patent/GB884530A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G05G7/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance
    • G05G7/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance altering the ratio of motion or force between controlling member and controlled member as a function of the position of the controlling member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/10—Disposition of hand control
    • B60T7/102—Disposition of hand control by means of a tilting lever
    • B60T7/104—Disposition of hand control by means of a tilting lever with a locking mechanism
    • B60T7/105—Disposition of hand control by means of a tilting lever with a locking mechanism the lock being released by means of a push button

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Braking Arrangements (AREA)

Abstract

884,530. Linkwork. SCHRODER, H., and HOPPE, F., [trading as SCHRODER & HOPPE APPARATEBAU], and SCHROTER, H. O. Feb. 3, 1959 [Feb. 3, 1958], No. 3869/59, Class 80 (3). [Also in Group XXXIV] A multiple-stroke tensioning and holding lever mechanism, for example, for hand brakes of heavy road and rail vehicles, comprises a hand lever 1 pivoted on a movable pivot 3 to a transmission lever 2 connected at 21 to the device to be tensioned, and pivoted on a fixed pivot 4 to a fixed frame 5 provided with ratchets 8, 9, for engagement with separate pawls 10, 11 pivoted on the hand lever 1, and serving not only to hold the mechanism against release of tension, but also as alternative fulcra about which the hand lever can be manually pivoted during tensioning to provide increased mechanical advantage. Compression springs 19, 19<SP>1</SP>, arranged between pivoted abutments 17, 18 on the hand lever 1, and the transmission lever 2, cause the hand lever 1 to abut a stop 20 on the transmission lever 2, and a stop 16 on the hand lever to hold a spring-loaded pawl 11 out of engagement with ratchet 9. By depressing a spring-loaded plunger 13 in the hand lever 1 the holding pawl 10 is disengaged from the ratchet 8 and tension can then be relieved by moving the lever anti-clockwise. To tension the device the hand lever 1 is rotated clockwise with transmission lever 2 about fixed pivot 4, until the load is sufficient to overcome compression of the springs 19, 19<SP>1</SP>, whereupon the hand lever rotates relative to the transmission lever about the pivot 3 and the pawl 11 is free to engage the ratchet 9 under spring load, thus providing a fixed fulcrum for further pivotal movement of the hand lever, resulting in considerably increased mechanical advantage, and also further compression of the springs. The latter may eventually pass dead-centre and subsequently assist the application of thrust. When the hand lever has reached its limit of clockwise movement it may be rotated anti-clockwise, when pawl 8 engaging ratchet 8 acts as a fixed pivot and pawl 11 slips, to apply further thrust to the transmission lever, the springs 19, 19<SP>1</SP> operating in the opposite sense.
GB3869/59A 1958-02-03 1959-02-03 Improvements relating to tensioning and holding lever mechanism, for example for brake-linkages Expired GB884530A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1221931X 1958-02-03
DE2985032X 1958-02-03
DE884530X 1958-02-03
DESCH23491A DE1170718B (en) 1958-02-03 1958-02-03 Hand lever with variable transmission

Publications (1)

Publication Number Publication Date
GB884530A true GB884530A (en) 1961-12-13

Family

ID=27670752

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3869/59A Expired GB884530A (en) 1958-02-03 1959-02-03 Improvements relating to tensioning and holding lever mechanism, for example for brake-linkages

Country Status (3)

Country Link
CH (1) CH370289A (en)
GB (1) GB884530A (en)
NL (1) NL235732A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217558A (en) * 1962-07-26 1965-11-16 Stopfix Bremse Schroter & Co Hand brake mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217558A (en) * 1962-07-26 1965-11-16 Stopfix Bremse Schroter & Co Hand brake mechanism

Also Published As

Publication number Publication date
CH370289A (en) 1963-06-30
NL235732A (en)

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