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    Improvements in and relating to overheated axle box detectors
    193.
    发明专利
    Improvements in and relating to overheated axle box detectors 未知

    公开(公告)号：GB860524A

    公开(公告)日：1961-02-08

    申请号：GB3543858

    申请日：1958-11-04

    Applicant: SERVO CORP OF AMERICA

    IPC: B61K9/06 ,  B61L1/20 ,  F16C17/24 ,  F16P7/00

    Abstract: 860,524. Detecting radiated heat. SERVO CORPORATION OF AMERICA. Nov. 4, 1958 [Nov. 8, 1957], No. 35438/58. Class 40 (3). [Also in Group XXX] In a system for detecting overheated axle boxes on railway vehicles, two heat detecting units, positioned on opposite sides of a railway track, are energized by heat from opposite axle boxes and an alarm and counter are operated when the difference between the received signals exceeds a predetermined value. The heat detector units 10 and 11, Fig. 3, each comprises two heat sensitive elements 14 and 15, e.g. thermistor flakes, which are mounted in a housing 20 and an optical system, including aperture 23, shutter 24 and lens 19, via which the element 14 is energized by heat received from a direction forming an angle α with the base of the housing. Element 15, which is shielded from heat entering the aperture, is connected in a bridge circuit with element 14 and acts to compensate for changes in ambient temperature. The units 10 and 11 are positioned on opposite sides of a track, Fig. 2 (10 only shown) and act in cooperation with electromagnetic wheel trips A, B and C, each of which produces an output pulse when a wheel flange passes through its magnetic air gap. Trips A and B are positioned apart at a distance equal to the wheel base of the vehicle being checked and trips B and C are positioned such that an axle box moves through the receive beam of the heat detector when its associated wheel moves from B to C. In operation, the moving vehicle produces a signal in trip A which energizes solenoids 25 via the storage circuit 30 to withdraw the shutters 24 protecting the elements 14 in the detector units 10 and 11, if the vehicle has the correct size of wheel base coincident signals are produced from the trips A and B which via a coincidence circuit 31 prepare a gate 26 for operation, additionally the gate is switched to its " on " position by the signal from trip B. The axle boxes, e.g. 22, Fig. 2, are then scanned by their respective detecting units and the signal produced in each unit is amplified and passed via the gate to the integrating circuits 40, 41 and 42, 43. The pulse from trip C switches off the gate and additionally operates relay 52 to discharge the integrating condensers 41 and 43 through the potentiometer 48. Each of the thyratron valves 55 and 56 is associated with one side of the track and is connected to a stepping relay which brings a new alarm and counter into operation each time the valve fires. The valves are normally held at cut-off and the potentiometer 48 is connected so that neither valve fires when the response from the detectors is equal, if, however, a difference exists, exceeding a predetermined value, one or other valve fires whereby an alarm is operated and the associated counter counts the number of pulses produced by the wheel trip C after the detection of the hot bearing. This count indicates the wheel position from the end of the train.

    Hot box detector
    195.
    发明专利
    Hot box detector 未知

    公开(公告)号：GB820919A

    公开(公告)日：1959-09-30

    申请号：GB3465757

    申请日：1957-11-06

    Applicant: SERVO CORP OF AMERICA

    IPC: B61K9/06 ,  B61L1/20

    Abstract: 820,919. Hot-axle detectors. SERVO CORPORATION OF AMERICA. Nov. 6, 1957 [Nov. 6, 1956; Aug. 6, 1957], No. 34657/57. Class 40 (3). A detector for the hot axle bearings of rail wagons comprises a heat-responsive control element, e.g. an infra-red detecting thermistor, mounted alongside the track, and an inclined optical system with its axis preferably at 20- 50 degrees to the horizontal and in a plane parallel to the rail track. There may be two such systems pointing in opposite directions with trip means operating shutters appropriate to the direction of movement of the wagons. There may be two heat detectors with separate optical systems, or a single detector with a mirror operated by the trip means, to incline in the receiving direction and reflecting the heat on to the detector. Alternatively, the shutters are controlled and held by the trip means. The journal box 18 is progressively scanned by the detector 10 as the rail car 19 moves along the track 13. The wheel trip 34 maybe a magnetic circuit closed by the wheel flange 25 and in a circuit containing a single-stability multivibrator or a time-delay grop-out relay giving a gate interval for the detector of about 50 milliseconds, sufficient even for slow trains of 5 m.p.h. A storage device in conjunction with the wheel trip operates the shutter of the detector for a sufficient period when the train is slow. Two wheel trips in series with a flip-flop circuit give a square gating pulse sufficient for full exposure of the hot box (Fig. 6, not shown). A single detector cell 14 (Fig. 8) serves duplicate optical systems 44, 44 , with shutters 51, 52 operated by solenoids 53, 54. The sequence in which the wheel trips 34, 56 are operated affects the directionally responsive switch 74 which determines the actuation of the solenoid and storage means 38, 38 , supplies a steady signal to relay means 76 to control the trip pulses, and turns on the recorder, alarm and telemetering devices 30, 31, 32.

    Talking direction finder
    196.
    发明授权
    Talking direction finder 失效
    说话方向

    公开(公告)号：US3873982A

    公开(公告)日：1975-03-25

    申请号：US36482873

    申请日：1973-05-29

    Applicant: SERVO CORP OF AMERICA

    Inventor： CARDON JULES ,  RICHTER FREDERICK ,  HAGEDORN HENRY

    IPC: G01S3/54 ,  G01S5/00 ,  G08G5/00

    CPC classification number: G01S5/0009 ,  G01S3/54

    Abstract: An automated direction finder system for providing verbal bearing information for aircraft is disclosed. The system extracts data regarding the bearing of an aircraft from the radio transmission requesting the bearing and then utilizes the extracted data to control the gating between a storage drum having recorded therein a full range of possible bearings and an amplifier which amplifies the appropriate bearing of the aircraft and transmits the same back to the aircraft.

    Abstract translation: 公开了一种用于为飞机提供口头轴承信息的自动测向系统。 该系统从请求轴承的无线电传输中提取关于飞机的轴承的数据，然后利用所提取的数据来控制其中记录有全范围可能的轴承的存储滚筒之间的门控，以及放大器 飞机并将其传回飞机。

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