GB512514A - Improvements in and relating to motor car transmission - Google Patents

Improvements in and relating to motor car transmission

Info

Publication number
GB512514A
GB512514A GB306138A GB306138A GB512514A GB 512514 A GB512514 A GB 512514A GB 306138 A GB306138 A GB 306138A GB 306138 A GB306138 A GB 306138A GB 512514 A GB512514 A GB 512514A
Authority
GB
United Kingdom
Prior art keywords
sleeve
gear
ratchet
wheel
spring
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
GB306138A
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 GB306138A priority Critical patent/GB512514A/en
Publication of GB512514A publication Critical patent/GB512514A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/122—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger for locking of reverse movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

512,514. Preventing reverse movement of vehicles. BRADSHAW, G. Feb. 1, 1938, No. 3061. [Class 103 (i)] A vehicle transmission system includes a ratchet or like device for preventing reverse movement of the vehicle, interposed between the fixed part and a rotary transmission part, means controlled by the change-speed gear for rendering said device operative or inoperative, and an overload coupling between the said device and the said fixed part and/or the said rotary part. As shown in Fig 1 the device comprises a ratchet wheel 4 formed on the low-gear pinion 1 and a corresponding wheel 5 splined on to a sleeve 6 embracing but not engaging with the shaft 2. The sleeve 6 carries a brake band 7 engaging with a brake lining 8 round a brake drum 9 fixed on to the gear box 10. The brake band is adjustably tensioned by means of a spring 12 and a bolt 13 and nut 14. The ratchet wheels 4 and 5 engage when low gear is engaged, forward running being made possible by the sliding of the wheel 5 on the sleeve 6 against the action of the spring 15. In the form shown in Fig. 2 a ratchet wheel 20 is formed on the casing 18 of a clutch 16 and the co-operating ratchet wheel 21 is carried by a sleeve 22 splined to a sleeve 23 surrounding the shaft 17 and secured to the gear box 24. The plates of the clutch 16 are urged into engagement by the spring 19. In this form the ratchet wheels are brought into operative relation, when low gear is engaged, either by the links 30, 31, and 32 or 36 and 37.
GB306138A 1938-02-01 1938-02-01 Improvements in and relating to motor car transmission Expired GB512514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB306138A GB512514A (en) 1938-02-01 1938-02-01 Improvements in and relating to motor car transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB306138A GB512514A (en) 1938-02-01 1938-02-01 Improvements in and relating to motor car transmission

Publications (1)

Publication Number Publication Date
GB512514A true GB512514A (en) 1939-09-19

Family

ID=9751240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB306138A Expired GB512514A (en) 1938-02-01 1938-02-01 Improvements in and relating to motor car transmission

Country Status (1)

Country Link
GB (1) GB512514A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150890A2 (en) * 1984-01-11 1985-08-07 Automotive Products Public Limited Company Motor vehicle transmission including a hill holder device
GB2271156A (en) * 1992-10-05 1994-04-06 Dana Corp Vehicle transmission with hill holder

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150890A2 (en) * 1984-01-11 1985-08-07 Automotive Products Public Limited Company Motor vehicle transmission including a hill holder device
EP0150890A3 (en) * 1984-01-11 1985-08-21 Automotive Products Public Limited Company Motor vehicle transmission including a hill holder device
US4650046A (en) * 1984-01-11 1987-03-17 Automotive Products Plc Motor vehicle transmission including a hill holder device
GB2271156A (en) * 1992-10-05 1994-04-06 Dana Corp Vehicle transmission with hill holder
US5366053A (en) * 1992-10-05 1994-11-22 Dana Corporation Vehicle transmission hill holder with releasable toothed clutch
AU666974B2 (en) * 1992-10-05 1996-02-29 Dana Corporation Vehicle transmission hill holder with releasable toothed clutch
GB2271156B (en) * 1992-10-05 1996-04-24 Dana Corp Hill holder for a vehicle transmission

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