US1569325A - Radio direction finder - Google Patents

Radio direction finder Download PDF

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Publication number
US1569325A
US1569325A US580515A US58051522A US1569325A US 1569325 A US1569325 A US 1569325A US 580515 A US580515 A US 580515A US 58051522 A US58051522 A US 58051522A US 1569325 A US1569325 A US 1569325A
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United States
Prior art keywords
antenna
axis
support
direction finder
radio direction
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Expired - Lifetime
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US580515A
Inventor
Leib August
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Telefunken AG
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Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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Publication date
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Priority to US580515A priority Critical patent/US1569325A/en
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Publication of US1569325A publication Critical patent/US1569325A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G01S1/02—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 radio waves

Definitions

  • receivers For determining the location of a receiver or the direction of a transmitter therefrom receivers have heretofore been employed which were provided with a rotat- This frame shaped antenna was su ported for rotation about a fixed axis, an the rceever, when installed on vehicles, ships and the like, had the disadvantage that in an inclined position of the vehele or vessel, the axis departed considerably from the vertical direction, thus giving rise to geometrical mistakes in the reading of the instrument.
  • this disadvantage is overcome by arranging the frame shapped antenna, inclusive of all parts 'which are affected by the incoming waves, such, for example, as coupling coils and tuning means, to turn on an axis, and by so supporting the turnng axis as to cause it to always assume a vertical position, even when the case vehiele or vessel on which the receiver is installed occupies an inclined position.
  • the means for tuning the antenna can in this casebe used as a weight.
  • the frame shaped antenna is fitted with a ball or other spherically curved pivot which allows free movement of the antennatowards all sides and its automatic adjustmenst into the vertical position, as well as its turning. 4
  • the pivot can be arranged either above or below the antenna. In the latter case a counter weight is connected to the axis of the antenna 'in order to' obtain a stable eq iilpoise.
  • e pivot is preferably arranged wth its' centre of -curvature concidng wth the centre of the antenna f'ae, so that when the Vehicle or ship' is uoving the antenna describes only a rotation about its centre in maintaining its vertical position.
  • the pivot member 'l'orming the hearing for the l'rame shaped antenna is c0mpara-.
  • Figs. L to 5 of the drawings show, by way of example, several of its practical embodiments.
  • weight 8. 9 is a pointer Secured to the support G and cooperating with the seale 4.
  • the support 6 is formed with feet 10 which may be rigidly connected to the floor 11, 12 of a vessel or other vehicle. The mode of action ot' the device is evident from the drawing. In every position of the floor indieated by the line 11, 12, the antenna 1 will assume a vertical position in consequenee of the efl ⁇ ect of the counter weight 8.
  • Fig 2 The arrangement according to Fig 2 is the same with the only exception that the ball pivot is arranged above the frame shaped antenna.
  • the counterweght may be omitted as the antenna together with the receiving apparatus 2 acts as a stabilizingweight.
  • Fig. 4 an arrangement is' shown in which the antenna eoil 1 is located 'above deck 'and the counterweight below clock; 'l ⁇ he counterweight is suitably formed by the receiving apparatus 2 to which are connected relays 14 and a battery by means of a cable strand 13.
  • the antenna frame is also in this case supported by the ball bearing 3, 5.
  • the ball bear-ing 3, 5 is provided in the support 6 and is covered by a cap 16. This cap may be provided with a scale 4 on wvhich plays a pointer 9 attached to the support.
  • Fig. '5 au arrangement is shown in which the antenna 1 is located above' the deck and receiving apparatus 2, acting as a counterweight is located below deck. Both the antenna and receiving apparatus are nounted on the shaftor axis 7 whichin turn is supported by means of a universal bearing having its center of curvature coincident tenna having an opening for said axis of' substantially greater diameter than the axis, ⁇
  • a radio device comprisng a frameshaped antenna, an axis upon which the antenna is mounted, 'a support for the ana spherically curved vbearin'g member ⁇ fixed to said axis below the antenna for mounting it on the support, and a counter-weight on the lower end of said axis for maintaining the antenna in' a condition of stable equipise with its axis in a vertical position, regardless of inclination of the support.
  • a radio device eomprising 'a', 'frameshaped antenna, a rotatable axis upon which the antenna is mounted, a support for the antenna franc adapted to be securcd upon a ship or other vehicle and having an opening for said axis of substantially greater diameter than the axis, and a spherically curved bearing nember for.
  • said axis having* its -center of curvature coinciding with the direction, and a counter-weight Secured on the axis below the deck for causing the axis position;
  • a radio device comprising -a frameshaped antenna, an axis upon which the antenna is mounted, a support for the antenna having an opening for said axis of substantially greater diameter than the axis, a universal hearing for said axis for enabling it to assume a vertical position regardless of inclination of the support, receiving apparatus mounted on the' axis below said bearing and serving as a counter weight for maintaining the axis in its vertical position.
  • a radio device comprising a frame- -shaped antenna, an axis upon which the antenua is mounted, a support for the antenna having an openng for said axis ofsubstantally greater diameter than the axis, a universal bearing for said aXis for enabling'it toassume invariably a vertical position, and a cap fixed on the axis above the hearing,
  • said cap and' said support being provided with a co-operating scale and pointer.
  • a radio device comprising an antenna, a support for said antenna adapted -to be mounted on a vehiele subject to rocking, and means for maintaining the said antenna in a fixed direction and for insuring that any given parts of the vehicle shall be always at a constant distance from said antenna, irrespective of the position of said vehicle.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Support Of Aerials (AREA)

Description

Jan. 12 1926. 1,569325 A. LEB
RADIO DIRECTION FINDER Filed August 8, 1922 4 Sheets-Sheet 1 i Jan. 12 1926. 1,569,325
- A. LEIB RADIO DIRECTION FINDER Filed August 8, 1922 4 sheets-Sheet 2 Jan. 12 1926. 1569325 A. LEIB RADIO DIRECTION FINDER Filed August 8, 1922 4 Sheets-Sheet 5 Jan. 12 1926. 1569325 A. LEIB RADIO DIRECTION FINDER Filed August 8. 1922 4 Sheets-Sheet 4.
able frame shaped antenna.
Patented Jan. 12, 1926.
UNITED sTATEs- 1569325 PAT NT' OFFICE.
AUGUST LEIB, OF BERLIN, GIEBMANY, ASSIGNOR TO GESELLSCHAFT DRAHTLOSE TELEGBAPHIE M. B. H., OF BERLIN, GERMANY, A CORPOBATION OF GERMANY.
RADIO DIRECTION FINDER.
Application filed August 8, 1922. Serial No. 580,515.
To all clmn it may concern: Be it known that I, AUGUs'r Lum, a ctzen of Germany, residing at 12/13 Hallesches Ufer, Berlin, Germany," have invented certain new and useful Improvements in Radio Direction Finders; and I do hereby declare the following to be a full, clear, and exact description of the in- Vention, ot' which the following is a specifirat-ion, and on which an application was filed in Germany, May 24, 1921, No. (i. 53,945.
For determining the location of a receiver or the direction of a transmitter therefrom receivers have heretofore been employed which were provided with a rotat- This frame shaped antenna was su ported for rotation about a fixed axis, an the rceever, when installed on vehicles, ships and the like, had the disadvantage that in an inclined position of the vehele or vessel, the axis departed considerably from the vertical direction, thus giving rise to geometrical mistakes in the reading of the instrument.
According to the present invention, this disadvantage is overcome by arranging the frame shapped antenna, inclusive of all parts 'which are affected by the incoming waves, such, for example, as coupling coils and tuning means, to turn on an axis, and by so supporting the turnng axis as to cause it to always assume a vertical position, even when the case vehiele or vessel on which the receiver is installed occupies an inclined position.
This can be attainecl by supporting the frame shaped antenna on auniversal bearing and suitably weighting it. The means for tuning the antenna can in this casebe used as a weight.
In one practical embodiment of the invention, the frame shaped antenna is fitted with a ball or other spherically curved pivot which allows free movement of the antennatowards all sides and its automatic adjustmenst into the vertical position, as well as its turning. 4
The pivot can be arranged either above or below the antenna. In the latter case a counter weight is connected to the axis of the antenna 'in order to' obtain a stable eq iilpoise.
e pivot is preferably arranged wth its' centre of -curvature concidng wth the centre of the antenna f'ae, so that when the Vehicle or ship' is uoving the antenna describes only a rotation about its centre in maintaining its vertical position.
The pivot member 'l'orming the hearing for the l'rame shaped antenna is c0mpara-.
tively' very large and provided with a sealc, while Qn the t'rane a pointer ounted cooperating with this scale. I
ln order to better explain the invcntio, Figs. L to 5 of the drawings show, by way of example, several of its practical embodiments.
weight 8. 9 is a pointer Secured to the support G and cooperating with the seale 4. The support 6 is formed with feet 10 which may be rigidly connected to the floor 11, 12 of a vessel or other vehicle. The mode of action ot' the device is evident from the drawing. In every position of the floor indieated by the line 11, 12, the antenna 1 will assume a vertical position in consequenee of the efl`ect of the counter weight 8.
The arrangement according to Fig 2 is the same with the only exception that the ball pivot is arranged above the frame shaped antenna. In this arrangement the counterweght may be omitted as the antenna together with the receiving apparatus 2 acts as a stabilizingweight. I
The arrangement according to Fig. 3 is fitted with a spherically curved pivot '3 of such a design that its centre of eurvature eoincdes with the centre of the antenna 1. The advantage of this'expedient can readily be seen. when it rocks or changes position, moves relatively to the center of the antenna 1 in a circular path about the center of the antenna 1 as a center of eurvature. Thus it will be seen that all points on the vehicle, even the they Shift position relative to, the antenna, maintain constant distances therefrom thus maintainn the capacitance between the antenna an the vehicle constant The entire Vehicle,
irrespective of the position of the vehicle.
'I'n Fig. 4 an arrangement is' shown in which the antenna eoil 1 is located 'above deck 'and the counterweight below clock; 'l`he counterweight is suitably formed by the receiving apparatus 2 to which are connected relays 14 and a battery by means of a cable strand 13. The antenna frame is also in this case supported by the ball bearing 3, 5. The ball bear- ing 3, 5 is provided in the support 6 and is covered by a cap 16. This cap may be provided with a scale 4 on wvhich plays a pointer 9 attached to the support.
In Fig. '5, au arrangement is shown in which the antenna 1 is located above' the deck and receiving apparatus 2, acting as a counterweight is located below deck. Both the antenna and receiving apparatus are nounted on the shaftor axis 7 whichin turn is supported by means of a universal bearing having its center of curvature coincident tenna having an opening for said axis of' substantially greater diameter than the axis,`
with the center of antenna 1 as is in Fig. 3.
'to assume a vertical position regardless of inclination of the support.
2; A radio device comprisng a frameshaped antenna, an axis upon which the antenna is mounted, 'a support for the ana spherically curved vbearin'g member` fixed to said axis below the antenna for mounting it on the support, and a counter-weight on the lower end of said axis for maintaining the antenna in' a condition of stable equipise with its axis in a vertical position, regardless of inclination of the support.
3. A radio device eomprising 'a', 'frameshaped antenna, a rotatable axis upon which the antenna is mounted, a support for the antenna franc adapted to be securcd upon a ship or other vehicle and having an opening for said axis of substantially greater diameter than the axis, and a spherically curved bearing nember for. said axis having* its -center of curvature coinciding with the direction, and a counter-weight Secured on the axis below the deck for causing the axis position;
A radio device comprising -a frameshaped antenna, an axis upon which the antenna is mounted, a support for the antenna having an opening for said axis of substantially greater diameter than the axis, a universal hearing for said axis for enabling it to assume a vertical position regardless of inclination of the support, receiving apparatus mounted on the' axis below said bearing and serving as a counter weight for maintaining the axis in its vertical position.
6. A radio device comprising a frame- -shaped antenna, an axis upon which the antenua is mounted, a support for the antenna having an openng for said axis ofsubstantally greater diameter than the axis, a universal bearing for said aXis for enabling'it toassume invariably a vertical position, and a cap fixed on the axis above the hearing,
said cap and' said support being provided with a co-operating scale and pointer.
7 A radio device comprising an antenna, a support for said antenna adapted -to be mounted on a vehiele subject to rocking, and means for maintaining the said antenna in a fixed direction and for insuring that any given parts of the vehicle shall be always at a constant distance from said antenna, irrespective of the position of said vehicle.
In testimony whereof I have signed my ,name to this specification.
'AUGUST LEIB.
`to be maintained always in such vertical
US580515A 1922-08-08 1922-08-08 Radio direction finder Expired - Lifetime US1569325A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434977A (en) * 1937-08-31 1948-01-27 Robert H Worrall Radio direction finder
US2437251A (en) * 1943-08-21 1948-03-09 Sperry Corp Stabilized radio direction finder and homing device
US2556384A (en) * 1949-02-15 1951-06-12 Frederick H Zeitz Self-aligning well pump base
US2617032A (en) * 1946-10-18 1952-11-04 Donald K Allison Navigational device
US2681783A (en) * 1950-10-18 1954-06-22 William J Smith Self-leveling device
US2885565A (en) * 1957-05-02 1959-05-05 Davis Alfred Azimuth sensing device
US3656170A (en) * 1970-06-25 1972-04-11 Itt Tiltable antenna
US3860931A (en) * 1973-11-26 1975-01-14 Post Office Ship-borne gravity stabilized antenna
US3968496A (en) * 1974-03-04 1976-07-06 International Standard Electric Corporation Stabilized antenna platform
US4146897A (en) * 1977-02-24 1979-03-27 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Antenna mast
US4609083A (en) * 1983-03-31 1986-09-02 Stuhler William B Reactive attitude stabilization system
US5111212A (en) * 1990-01-30 1992-05-05 Questus Corporation Radar antenna mount
US5512912A (en) * 1994-01-28 1996-04-30 Amsc Subsidiary Corporation Marine antenna mount
EP2752937A1 (en) * 2011-08-31 2014-07-09 Mitsubishi Electric Corporation Antenna device
EP2752938A1 (en) * 2011-08-31 2014-07-09 Mitsubishi Electric Corporation Antenna device

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434977A (en) * 1937-08-31 1948-01-27 Robert H Worrall Radio direction finder
US2437251A (en) * 1943-08-21 1948-03-09 Sperry Corp Stabilized radio direction finder and homing device
US2617032A (en) * 1946-10-18 1952-11-04 Donald K Allison Navigational device
US2556384A (en) * 1949-02-15 1951-06-12 Frederick H Zeitz Self-aligning well pump base
US2681783A (en) * 1950-10-18 1954-06-22 William J Smith Self-leveling device
US2885565A (en) * 1957-05-02 1959-05-05 Davis Alfred Azimuth sensing device
US3656170A (en) * 1970-06-25 1972-04-11 Itt Tiltable antenna
US3860931A (en) * 1973-11-26 1975-01-14 Post Office Ship-borne gravity stabilized antenna
US3968496A (en) * 1974-03-04 1976-07-06 International Standard Electric Corporation Stabilized antenna platform
US4146897A (en) * 1977-02-24 1979-03-27 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Antenna mast
US4609083A (en) * 1983-03-31 1986-09-02 Stuhler William B Reactive attitude stabilization system
US5111212A (en) * 1990-01-30 1992-05-05 Questus Corporation Radar antenna mount
US5512912A (en) * 1994-01-28 1996-04-30 Amsc Subsidiary Corporation Marine antenna mount
EP2752937A1 (en) * 2011-08-31 2014-07-09 Mitsubishi Electric Corporation Antenna device
EP2752938A1 (en) * 2011-08-31 2014-07-09 Mitsubishi Electric Corporation Antenna device
EP2752937A4 (en) * 2011-08-31 2015-04-22 Mitsubishi Electric Corp Antenna device
EP2752938A4 (en) * 2011-08-31 2015-04-22 Mitsubishi Electric Corp Antenna device
US9325055B2 (en) 2011-08-31 2016-04-26 Mitsubishi Electric Corporation Antenna apparatus having vibration isolation

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