GB665766A - Improvements in or relating to mechanical transmissions - Google Patents
Improvements in or relating to mechanical transmissionsInfo
- Publication number
- GB665766A GB665766A GB1121349A GB1121349A GB665766A GB 665766 A GB665766 A GB 665766A GB 1121349 A GB1121349 A GB 1121349A GB 1121349 A GB1121349 A GB 1121349A GB 665766 A GB665766 A GB 665766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brakes
- cylinder
- tractor
- trailer
- piston
- 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
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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/58—Combined or convertible systems
- B60T13/581—Combined or convertible systems both hydraulic and pneumatic
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
- G05G9/08—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlled members being actuated successively by progressive movement of the controlling member
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
- G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
- G05G2700/22—Mechanisms linking plurality of controlling or controlled members
- G05G2700/26—Mechanisms linking plurality of controlling or controlled members with a control member moving selectively or simultaneously the controlled members
- G05G2700/30—Mechanisms linking plurality of controlling or controlled members with a control member moving selectively or simultaneously the controlled members without preselection or differentiation between selection and actuating, e.g. control members with a fix control sequence, after a determined advance cycle, in which the control device comprises cams actuating separately the controlled members
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
665,766. Fluid-pressure brakes. CLAYTON DEWANDRE CO., Ltd. April 6, 1950 [April 27, 1949], No. 11213/49. Class 103 (i). A mechanical transmission system, which is particularly suited for use in fluid-pressure braking systems for tractor-trailer units, is dependent on the provision, as shown diagrammatically in Fig. 1, of a cylinder f having a piston e therein, the force exerted on which by a constant vacuum or pneumatic pressure must first be overcome before the pedal a can be depressed to operate a brake through the linkage c. In Fig. 4, the invention is shown applied to a tractor trailer brake system in which the tractor brakes are applied hydraulically by a master cylinder 9 and the trailer brakes by a vacuum system comprising a reservoir 19 and control valve 13. Until the vacuum force acting on a piston in the cylinder 8 has been overcome, the brake pedal part 1, 11, pivots about point 2 and operates the valve 13, thereby applying the trailer brakes first and avoiding the jack-knifing of the vehicles. Thereafter, the force on the piston in cylinder 8 having been overcome, the pedal pivots as a whole about point 4 and applies the tractor brakes by the master cylinder 9. The lostmotion connection 5, 6 prevents interference with the normal operation if the cylinder 8 is inoperative. In a modified arrangement described, the pedal actuates directly a master cylinder, the delivery from which passes straight to a relay valve operating the trailer brakes and also acts against a resisting piston, according to the invention, controlling the tractor brake regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1121349A GB665766A (en) | 1949-04-27 | 1949-04-27 | Improvements in or relating to mechanical transmissions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1121349A GB665766A (en) | 1949-04-27 | 1949-04-27 | Improvements in or relating to mechanical transmissions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB665766A true GB665766A (en) | 1952-01-30 |
Family
ID=9982089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1121349A Expired GB665766A (en) | 1949-04-27 | 1949-04-27 | Improvements in or relating to mechanical transmissions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB665766A (en) |
-
1949
- 1949-04-27 GB GB1121349A patent/GB665766A/en not_active Expired
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