US2028174A - Distance and depth finding - Google Patents

Distance and depth finding Download PDF

Info

Publication number
US2028174A
US2028174A US381971A US38197129A US2028174A US 2028174 A US2028174 A US 2028174A US 381971 A US381971 A US 381971A US 38197129 A US38197129 A US 38197129A US 2028174 A US2028174 A US 2028174A
Authority
US
United States
Prior art keywords
indicator
sound
scale
distance
movable element
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 - Lifetime
Application number
US381971A
Other languages
English (en)
Inventor
Jr Edwin E Turner
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.)
Submarine Signal Co
Original Assignee
Submarine Signal Co
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 Submarine Signal Co filed Critical Submarine Signal Co
Priority to US381971A priority Critical patent/US2028174A/en
Priority to FR698604D priority patent/FR698604A/fr
Priority to DE1930558234D priority patent/DE558234C/de
Priority to GB21078/30A priority patent/GB350286A/en
Application granted granted Critical
Publication of US2028174A publication Critical patent/US2028174A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Definitions

  • the present invention relates to distance and depth measurement, andmore particularly to the systems, apparatus and methods employed in determining, depths and heights by transmitting a sound or compressional wave signal and measuring the time interval between the emission of the signal and the receipt of the impulse reflected from the object whose distance is to be measured.
  • oscillator takes a number of vibrations to build up a maximum vibration and then dies down slowly when'the power is cut off. This means that on very shallow depths, where very short signals are required, the oscillator has great difficulty in putting into the medium its maximum power.
  • the sound emitter is only required to. operate for a very small percentage of the entire time, sothat the average power supplied is very small.
  • A- two kilowatt oscillator therefore, operating for two-thousandths of a second only. has a possible energy source for a signal of about three foot-pounds, which is very little energy.
  • the explosivecharge while providing suflicient 5 power, is undesirable from the point of view of safety, hard to handle and time properly, and creates poor acoustic reception, particularly in a water medium, because of the gases emitted.
  • a, sounding mecha- 10 nism is employed which is of the impact type, but operated in such a manner in connection with the entire system that the source of power necessary to operate the sound emitter is remarkably small and draws a practically uniform load at 15 all times.
  • the sounder controls the operation of the indicator whose position at the time of the arrival of the reflected signal gives the distance or depth.
  • a new type of indicator is employed, as 25 will be pointed out further on in the specification.
  • geigure 2 shows the details of the indicating 30 t
  • the sound is emitted by the diaphragm l, travels to the bottom of the ocean or the reflecting surface along the path 2, is reflect- 35 ed along 3 to the hydrophone 4.
  • the diaphragm is operated by a striker 5 on the lever 6, pivoted at I, through the operation of the motor 8;
  • the shaft 9 of the motor 8 has a worm gear ill at its end, meshing with the gear pin I2, as shown on its fiat face.
  • the pin l2 comes in contact with the arm l3 of the lever and raises the arm against the spring M as the cam II is rotated by the motor through the worm gear ID.
  • the speed of the gear ll is made low so that the force available against the spring is large and considerable energy may be stored, even though the motor 8 be a-fraction of an horse power.
  • the contact between the electrodes l6 and I! is so timed that the indicator I9 is released as the hammer 5 strikes the diaphragm l.
  • the indicator latravels at uniform speed as the sound travels to the reflecting surface and returns to the hydrophone d.
  • the signal upon its return, operates the indicating circuit 23, which is the same circuit used in my copending application Serial No. 270,660, filed April 1'7, 1928, and which causes a rapid change in plate current in the tube 25.
  • This induces a high voltage across the secondary of the transformer 26 and brings about the discharge of the indicating tube 21, causing a red or other colored glow, only for an instant, however.
  • the point of the indicator l9 against taneous illumination becomes momentarily visible, as if it were still, and allows the operator or observer to read the depth or distance indication on the scale.
  • the tube 21 is shown in detail in Figure 2,.and is composed of a plate 29 and a wire 30 running parallel to one another through the crescent shaped tube.
  • the plate 29 may have a coating of powdered mica or the like on the back side so that the front side may glow. This coating may be put on the side of the plate furthest from the wire, so that a uniform glow will be visible without the dark line of the wire appearing at all.
  • the outside of the tube on the back may also be silvered to reflect the illumination against the indicator.
  • the wire 30 is connected to one side of the secondary of the transformer 26, while the plate 29 is connected to the other side.
  • a sound producer an electrical switch, a measuring scale having an initial position, an indicator, means for moving the indicator uniformly with respect to the scale from the initial position, means operable by the electrical switch to restore and hold the indicator in its initial position, and means operable by the sound producer to operate the electrical switch whereby the closing of the switch takes place just before the sound production and the release of the indicator simultaneously with the sound production.
  • a sound producer a measuring scale having cator having a constant velocity relative to the scale during the time measurement for indicating the depth
  • means for commencing the operation of the indicator simultaneously with the sound production including electric means for initially restoring the indicator to the zero position of the scale and retaining it there comprising, an electric switch, means operable by the sound producer for operating said switch and means operable by the switch to restore and hold the indicator, the said means operable by the sound producer operating the switch, closing the same 'just before the sound production and opening it simultaneously therewith and means associated with the indicator for producing an indication upon receipt of the echo while the indicator is in motion.
  • a sound producer having mechanically moving parts, an indicator associated with a measuring scale having relatively stationary and movable elements, means adapted to move said movable element with respect to the scale, switching means operated directly by the mechanical parts of said sound producer and electrodynamic' means deenergized by said switching means for allowing. the means adapted to move the movable element to operate.
  • an indicating device having a measuring scale having an initial position from which measurements are to be made, an indicator adapted to com- 'mence the measurementof depths or distances from said initial position of the scale, spring means for propelling said indicator relative to said scale, means including an electric switch operated in the operation of said sound producer to restore the indicator to said initial position before the production of the sound to hold the indicator in said initial position until the production of the sound and to release said indicator upon the production of the sound.
  • a sound producer having measuring scale, an indicator associated therewith, said indicator having relatively stationary and movable elements, means adapted to move said movable element with respect to the scale, means operated by contact with the said moving parts for releasing said movable element, means associated with the stationary element of said indicator for producing an indication withreference to the scale and the movable element and means including the means for releasing the movable element to operate to restore the indicator to an initial position with respect to the scale.
  • a sound producer having mechanically moving parts including an arm operated at the time ,of the production of the sound waves and a contact operated by said arm, a measuring scale, an indicator associated with a measuring scale having relatively stationary and movable elements, means adapted to move said movable element with respect to the scale, means operated by said contact for releasing said movable element, means associated with the stationary element of said indicator for producing an indication with reference to the scale and the movable element and means including the means for releasing the movable element to operate to restore the indicator to an initial position with respect to the scale.
  • a sound producer a measuring scale, an indicator associated with a measuring scale having relatively stationary and movable elements, a spring, means mounting said spring to exert a tension on the movable element in one position, an electrical coil fixed with said movable element, and means forming a magnetic field positioned to pull the movable element to said one position when the coil is energized, an electric switch operated directly by the sound producer for deenergizing the coil when the switch is open and energizing it when the switch is closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Details Of Measuring And Other Instruments (AREA)
US381971A 1929-07-29 1929-07-29 Distance and depth finding Expired - Lifetime US2028174A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US381971A US2028174A (en) 1929-07-29 1929-07-29 Distance and depth finding
FR698604D FR698604A (fr) 1929-07-29 1930-07-04 Appareil stroboscopique pour la mesure des distances et des profondeurs sous-marines et applications analogues
DE1930558234D DE558234C (de) 1929-07-29 1930-07-09 Vorrichtung zum Bestimmen von Tiefen
GB21078/30A GB350286A (enrdf_load_stackoverflow) 1929-07-29 1930-07-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US381971A US2028174A (en) 1929-07-29 1929-07-29 Distance and depth finding

Publications (1)

Publication Number Publication Date
US2028174A true US2028174A (en) 1936-01-21

Family

ID=23507046

Family Applications (1)

Application Number Title Priority Date Filing Date
US381971A Expired - Lifetime US2028174A (en) 1929-07-29 1929-07-29 Distance and depth finding

Country Status (4)

Country Link
US (1) US2028174A (enrdf_load_stackoverflow)
DE (1) DE558234C (enrdf_load_stackoverflow)
FR (1) FR698604A (enrdf_load_stackoverflow)
GB (1) GB350286A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755455A (en) * 1953-01-27 1956-07-17 Gen Precision Lab Inc Depth sounder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6705459B1 (en) * 1998-02-17 2004-03-16 General Kinematics Corporation Two-way vibratory feeder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755455A (en) * 1953-01-27 1956-07-17 Gen Precision Lab Inc Depth sounder

Also Published As

Publication number Publication date
GB350286A (enrdf_load_stackoverflow) 1931-06-11
FR698604A (fr) 1931-02-02
DE558234C (de) 1932-09-20

Similar Documents

Publication Publication Date Title
GB375375A (en) Improvements in and relating to the measurement of distances by echo reception methods
US1864638A (en) Method and means for the observation and measurement of the speed of a vessel by directed beams of ultra-audible waves
US2326880A (en) Distance measuring device
US1983254A (en) Method and apparatus for distance finding
US2028174A (en) Distance and depth finding
US2435066A (en) Meter reading annunciator
US2098266A (en) Distance finder
US2032893A (en) Arrangement for the direct indication of time periods, especially for echo sounding
US2410066A (en) Submarine signaling
US2054109A (en) Indicating device
US2506500A (en) Device for simultaneous indicating and recording signals
US2016907A (en) Sound wave apparatus
US2015702A (en) Method and apparatus for measuring distances and depths
US2084845A (en) Echo sounding apparatus
US3119092A (en) Distance-measuring method and apparatus
US1885652A (en) Method and apparatus for taking soundings
US2459679A (en) Sound ranging training apparatus
US1847243A (en) Measuring apparatus
US2910666A (en) Helical range recorder
US1409794A (en) spitz
US2437416A (en) Deep and shoal alarm
US2361703A (en) Echo sounding device
US1217585A (en) Method for measuring distance.
US2284699A (en) Distance measuring device
US2260347A (en) Echo sounding apparatus