GB374251A - Improvements in vehicle control for brake and door apparatus - Google Patents
Improvements in vehicle control for brake and door apparatusInfo
- Publication number
- GB374251A GB374251A GB15423/31A GB1542331A GB374251A GB 374251 A GB374251 A GB 374251A GB 15423/31 A GB15423/31 A GB 15423/31A GB 1542331 A GB1542331 A GB 1542331A GB 374251 A GB374251 A GB 374251A
- Authority
- GB
- United Kingdom
- Prior art keywords
- doors
- switch
- open
- fluid
- valve
- 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
- 239000012530 fluid Substances 0.000 abstract 7
- 230000000994 depressogenic effect Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/506—Application of doors, windows, wings or fittings thereof for vehicles for buses
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
374,251. Controlling motorbus doors. NATIONAL PNEUMATIC CO., 420, Lexington Avenue, New York, U.S.A. May 26, 1931, No. 15423. Convention date, May 28, 1930. [Class 79 (v).] Means for controlling motor bus doors comprise pneumatic door-operating motors which cannot be operated to open the doors until the brakes are applied and while the doors are open the brakes cannot be released or the accelerator depressed. Further the doors cannot be closed until the doorway is clear of passengers. The vehicle is stopped by brake pedal 7 which operates valve 6 to pass fluid from a source 8 through pipe 4 to the brake cylinders 2. Fluid also passes through pipe 9 to operate pneumatic switch 10 and interconnect wires 22, 23. Current then flows through wires 20, 22, 23, 24 to switch 25 and through wires 23, 54 to stop lamp 55. When the bus stops the switch 25 is momentarily closed by the operator and current flows through wires 26, 27 to energize a magnet 33 and pull over a lever 31 which prevents depression of the accelerator 29. Current also flows through wire 26 to energize a magnet valve 36 and connect ports 110, 111, Fig. 3. This exposes a plunger 83 to fluid pressure and presses it against a valve seating thereby closing exhaust passage 81. When plunger 83 is seated a ball 82 of a check valve moves to the right against the action of a spring and exposes the cylinder of a pneumatic switch 12 to the fluid. The consequent movement of the piston bridges contacts 34, 70 and establishes a holding circuit for the magnet valve 36 so that it remains open after the switch 25 is opened. If a passenger is standing above one of the treadle switches 37 circuit 24, 70, 36<1>, 37, 38 is completed and a magnet valve 39 is operated to throw open the larger cylinder of the pneumatic dooroperating motor 41 to the atmosphere and open the door. Should an attempt be made to release the brakes while the doors are open by removing pressure on the pedal 7 to cut off the fluid supply, fluid under pressure will flow from the switch 12 through pipes 79, 5, 4. As soon as the treadles 37 are free magnet valve 39 is de-energized and fluid pressure is supplied to the large cylinder of the door engine to close the doors. As they close a drum 48 breaks the holding circuit of the valve 36 and establishes the circuit to the signal light 53 indicating that the doors are closed. The doors can be operated without a passenger standing on the treadle switch 37 by closing a switch 57. Further the doors can be opened from outside the motor bus by a key-operated switch 59.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US374251XA | 1930-05-28 | 1930-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB374251A true GB374251A (en) | 1932-06-09 |
Family
ID=21894261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15423/31A Expired GB374251A (en) | 1930-05-28 | 1931-05-26 | Improvements in vehicle control for brake and door apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB374251A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2866511A (en) * | 1956-08-06 | 1958-12-30 | Niederoest Henry | Safety brake |
-
1931
- 1931-05-26 GB GB15423/31A patent/GB374251A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2866511A (en) * | 1956-08-06 | 1958-12-30 | Niederoest Henry | Safety brake |
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