US2212253A - Antenna for receiving radio transmissions in automobiles - Google Patents

Antenna for receiving radio transmissions in automobiles Download PDF

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Publication number
US2212253A
US2212253A US152690A US15269037A US2212253A US 2212253 A US2212253 A US 2212253A US 152690 A US152690 A US 152690A US 15269037 A US15269037 A US 15269037A US 2212253 A US2212253 A US 2212253A
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United States
Prior art keywords
antenna
automobiles
radio transmissions
receiving radio
conductor
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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
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US152690A
Inventor
Stief Karl
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.)
Motors Liquidation Co
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Motors Liquidation 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 Motors Liquidation Co filed Critical Motors Liquidation Co
Application granted granted Critical
Publication of US2212253A publication Critical patent/US2212253A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk

Definitions

  • Another object of my invention is the arrangement of the antenna in such a manner that the appearance of the car is not affected.
  • a further object of my invention is to arrange the antenna on a stream-lined car so that the air resistance when driving at high speeds is not seriously enlarged so that the advantage of the stream-lining is maintained.
  • Fig. 1 is a side view of an automobile provided with an antenna
  • Fig. 2 shows the antenna applied to a slightly modified form of car
  • Fig. 3 is a cross-section taken on line III-HI of Fig. 1, v
  • Fig. 4 shows the connection between the antenna and the conductor leading to the receiver in detail partly in section
  • Figs. 5 and 6 show modifications of the invention in cross-sectional views similar to Fig. 3.
  • the radio sets In order to enable persons riding in an automobile the body of which is of the all-steel-construction type to receive radio transmissions even of more distant or less powerful transmitters, the radio sets must be provided with an antenna outside of the steel body, because the sheet metal screens oif the radio waves.
  • the antenna is according to my invention made of a rod or tube 3 which is arranged on the top of the car in its longitudinal midplane. It is held in place by means of supporting members 2 which are fastened to the top of the automobile in any conventional manner by means of screws and nuts.
  • the members 2 may be made of ceramic material or artificial resin or any other insulating substance and if necessary provided with stiffening means such as metal inserts, or they may be metal bodies which, however, must be insulated from the car body in any convenient manner.
  • the cross-section of the antenna rod may be circular as shown in Figure 5 or elliptic as shown in Figures 3 and 4 or of another suitable crosssection.
  • the antenna is connected to the conductor which leads to the radio set.
  • a preferred form of this connection is shown in detail in Figure 4.
  • a metal piece 4 is attached for instance by soldering or welding.
  • Piece 4 passes through an opening in the sheet metal panel la forming the top of the car and covered at the inside with a lining 1 as usual.
  • the lower end of piece 4 is fastened to a wire I! leading to the radio set and which is as usually rubber insulated and provided with a protecting sheath.
  • Piece 4 is surrounded by insulating bodies or members 5 and 6 preferably of a ceramic material.
  • Member 5 is arranged on the outer side of the top panel la whereas member 6 surrounds the lower portion of piece 4.
  • An annular extension 511 of the bottom of member 5 extends into a recess 6a which is formed by a flange 617 provided on the upper side of member 6.
  • a grommet 8 preferably made of soft rubber is inserted, in order to prevent rattling and the entrance of rain.
  • Cap 9 is provided with an opening 9a through which the conductor l I passes.
  • the other antenna supporting members 2 may be constructed and attached in a similar manner except that in these cases no conductors are connected to the lower ends of the metal pieces 4.
  • the modification shown in Figure 5 is characterized by the fact that the antenna 3 is protected against dirt and rain by means of a roof i3 made of a material that does not affect the radio Waves, preferably Bakelite or another artificial resin or cellulose product.
  • the top of the car has a shallow groove l4, and the roof i3 is fastened to the recessed border of the groove preferably by means of screws "5.
  • the roof I3 has a ridge l5 by which the top of the car obtains a neat appearance.
  • the antenna 3 which has a suitable crescent-shaped cross-section is arranged on the ridge of the roof [3 of insulating material. 7 It is fastened by means of screws l1 and nuts l8.
  • a construction similar to that shown in Figure 4 is provided for connecting the antenna with the wire leading to the radio set.
  • Antenna for receiving radio transmissions in automobiles having a non-collapsible top comprising a strip of non-conductive material extending longitudinally over the top of the automobile and arched transversely so that only the edges of the strip are in contact with the top panel to which they are secured, a conductor extending longitudinally in the middle of, and attached to, said strip, and means for connecting the said conductor with the radio set.
  • 2.'Antenna for receiving radio transmissions in automobiles having a non-collapsible top comprising a conductor extending longitudinally over the top of the automobile, insulating means for supporting the conductor at a substantially equal distance from the top of the automobile, means for connecting said conductor toa radio set, said top provided with a shallow groove, the conductor supporting means being attached to the bottom of the groove and a roof made of non-conducting material spaced from and covering said conductor which at the borders of the groove fits smoothly to said top and is provided 2

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

K. STIEF Aug. 20, 1940.
ANTENNA FOR RECEIVING RADIO TRANSMISSIONS IN AUTOMOBILES Filed July 9, 1937 Snventor w w MM 5 .5 e n r w W Patented Aug. 20, 1940 Karl Stief, Mainz, Germany, assignor to General.
Motors Corporation, Detroit, Mich, a corporation of Delaware Application July 9, 1937, Serial No. 152,690 In Germany July 11, 1936 2 Claims. (Cl. 25033) UNITED STATES PATENroFricE This invention relates to improvements in antennae for receiving radio transmissions in automobiles.
It is an object of my invention to arrange the antenna in such a way that radio transmissions can be received in automobiles having an allsteel body, which is a great obstacle for radio waves.
Another object of my invention is the arrangement of the antenna in such a manner that the appearance of the car is not affected.
A further object of my invention is to arrange the antenna on a stream-lined car so that the air resistance when driving at high speeds is not seriously enlarged so that the advantage of the stream-lining is maintained.
Other objects of my inventionwill more clearly appear from the following description of some embodiments of the invention which are shown in the accompanying drawing.
In the drawing:
Fig. 1 is a side view of an automobile provided with an antenna,
Fig. 2 shows the antenna applied to a slightly modified form of car,
Fig. 3 is a cross-section taken on line III-HI of Fig. 1, v
Fig. 4 shows the connection between the antenna and the conductor leading to the receiver in detail partly in section,
Figs. 5 and 6 show modifications of the invention in cross-sectional views similar to Fig. 3.
In the drawing I represents the body of an automobile made of sheet metal and which is preferably formed in a stream-lined manner. The stream-lined form is more pronounced in the modification shown in Figure 2, although the ear shown in Figure 1 too is formed so that the air resistance is greatly reduced in comparison with those cars which are still in general use.
In order to enable persons riding in an automobile the body of which is of the all-steel-construction type to receive radio transmissions even of more distant or less powerful transmitters, the radio sets must be provided with an antenna outside of the steel body, because the sheet metal screens oif the radio waves. The antenna is according to my invention made of a rod or tube 3 which is arranged on the top of the car in its longitudinal midplane. It is held in place by means of supporting members 2 which are fastened to the top of the automobile in any conventional manner by means of screws and nuts.
The members 2 may be made of ceramic material or artificial resin or any other insulating substance and if necessary provided with stiffening means such as metal inserts, or they may be metal bodies which, however, must be insulated from the car body in any convenient manner. The cross-section of the antenna rod may be circular as shown in Figure 5 or elliptic as shown in Figures 3 and 4 or of another suitable crosssection.
Preferably at one end the antenna is connected to the conductor which leads to the radio set. A preferred form of this connection is shown in detail in Figure 4. To the antenna 3 a metal piece 4 is attached for instance by soldering or welding. Piece 4 passes through an opening in the sheet metal panel la forming the top of the car and covered at the inside with a lining 1 as usual. The lower end of piece 4 is fastened to a wire I! leading to the radio set and which is as usually rubber insulated and provided with a protecting sheath. Piece 4 is surrounded by insulating bodies or members 5 and 6 preferably of a ceramic material. Member 5 is arranged on the outer side of the top panel la whereas member 6 surrounds the lower portion of piece 4. An annular extension 511 of the bottom of member 5 extends into a recess 6a which is formed by a flange 617 provided on the upper side of member 6. Between member 5 and toppanel la a grommet 8 preferably made of soft rubber is inserted, in order to prevent rattling and the entrance of rain. For holding the parts together member 6 the central opening of which is threaded, is
screwed on the lower end of piece 4 which is provided with corresponding threads. The end of the conductor H is provided with a clamping device i2 by means of which it is fastened to the end of piece 4-. The assembly is arranged inside a cap 9 the rim of which is pressed against lining i by means of a screw ill which is screwed into a threaded bore of piece 4. Cap 9 is provided with an opening 9a through which the conductor l I passes.
It may be added that the other antenna supporting members 2 may be constructed and attached in a similar manner except that in these cases no conductors are connected to the lower ends of the metal pieces 4.
The modification shown in Figure 5 is characterized by the fact that the antenna 3 is protected against dirt and rain by means of a roof i3 made of a material that does not affect the radio Waves, preferably Bakelite or another artificial resin or cellulose product. The top of the car has a shallow groove l4, and the roof i3 is fastened to the recessed border of the groove preferably by means of screws "5. The roof I3 has a ridge l5 by which the top of the car obtains a neat appearance.
In the modified form shown in Figure 6 the antenna 3 which has a suitable crescent-shaped cross-section is arranged on the ridge of the roof [3 of insulating material. 7 It is fastened by means of screws l1 and nuts l8. Preferably at one end of the antenna a construction similar to that shown in Figure 4 is provided for connecting the antenna with the wire leading to the radio set.
I have in the foregoing described some embodiments of the invention. It will, however, be understood that the invention is not limited to these specific constructions but extends to all modifications coming within the scope of the appended claims.
I claim:
1. Antenna for receiving radio transmissions in automobiles having a non-collapsible top, comprising a strip of non-conductive material extending longitudinally over the top of the automobile and arched transversely so that only the edges of the strip are in contact with the top panel to which they are secured, a conductor extending longitudinally in the middle of, and attached to, said strip, and means for connecting the said conductor with the radio set.
2.'Antenna for receiving radio transmissions in automobiles having a non-collapsible top, comprising a conductor extending longitudinally over the top of the automobile, insulating means for supporting the conductor at a substantially equal distance from the top of the automobile, means for connecting said conductor toa radio set, said top provided with a shallow groove, the conductor supporting means being attached to the bottom of the groove and a roof made of non-conducting material spaced from and covering said conductor which at the borders of the groove fits smoothly to said top and is provided 2
US152690A 1936-07-11 1937-07-09 Antenna for receiving radio transmissions in automobiles Expired - Lifetime US2212253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE485062X 1936-07-11

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FR (1) FR824159A (en)
GB (1) GB485062A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520988A (en) * 1948-03-31 1950-09-05 Motorola Inc Car body antenna
US2774811A (en) * 1954-03-02 1956-12-18 Shanok Abraham Antenna and trim
EP0223398A1 (en) * 1985-10-29 1987-05-27 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4717921A (en) * 1984-11-15 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4717922A (en) * 1984-11-06 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4723127A (en) * 1984-12-12 1988-02-02 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4754284A (en) * 1984-11-15 1988-06-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4789866A (en) * 1984-11-08 1988-12-06 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4792807A (en) * 1985-03-27 1988-12-20 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4794397A (en) * 1984-10-13 1988-12-27 Toyota Jidosha Kabushiki Kaisha Automobile antenna
US4804968A (en) * 1985-08-09 1989-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4804966A (en) * 1984-10-29 1989-02-14 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4806942A (en) * 1985-06-10 1989-02-21 Toyota Jidosha Kabushiki Kaisha Automobile TV antenna system
US4816837A (en) * 1985-08-01 1989-03-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4821042A (en) * 1985-06-28 1989-04-11 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4823142A (en) * 1985-06-21 1989-04-18 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4845505A (en) * 1987-02-13 1989-07-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system for diversity reception
USD424570S (en) * 1999-09-24 2000-05-09 Magnadyne Corporation Antenna
US6157345A (en) * 1999-09-24 2000-12-05 Magnadyne Corporation Antenna assembly and method of installing an antenna

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757212C (en) * 1939-02-07 1953-03-23 Blaupunkt Werke Gmbh Rod antenna made of telescopic extendable and retractable members for vehicles
JPH0964626A (en) * 1995-08-24 1997-03-07 M C C:Kk Antenna

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520988A (en) * 1948-03-31 1950-09-05 Motorola Inc Car body antenna
US2774811A (en) * 1954-03-02 1956-12-18 Shanok Abraham Antenna and trim
US4794397A (en) * 1984-10-13 1988-12-27 Toyota Jidosha Kabushiki Kaisha Automobile antenna
US4804966A (en) * 1984-10-29 1989-02-14 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4717922A (en) * 1984-11-06 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4789866A (en) * 1984-11-08 1988-12-06 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4717921A (en) * 1984-11-15 1988-01-05 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4754284A (en) * 1984-11-15 1988-06-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4723127A (en) * 1984-12-12 1988-02-02 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4792807A (en) * 1985-03-27 1988-12-20 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4806942A (en) * 1985-06-10 1989-02-21 Toyota Jidosha Kabushiki Kaisha Automobile TV antenna system
US4823142A (en) * 1985-06-21 1989-04-18 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4821042A (en) * 1985-06-28 1989-04-11 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4816837A (en) * 1985-08-01 1989-03-28 Toyota Jidosha Kabushiki Kaisha Automobile antenna system
US4804968A (en) * 1985-08-09 1989-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4804967A (en) * 1985-10-29 1989-02-14 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
EP0223398A1 (en) * 1985-10-29 1987-05-27 Toyota Jidosha Kabushiki Kaisha Vehicle antenna system
US4845505A (en) * 1987-02-13 1989-07-04 Toyota Jidosha Kabushiki Kaisha Automobile antenna system for diversity reception
USD424570S (en) * 1999-09-24 2000-05-09 Magnadyne Corporation Antenna
US6157345A (en) * 1999-09-24 2000-12-05 Magnadyne Corporation Antenna assembly and method of installing an antenna

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Publication number Publication date
FR824159A (en) 1938-02-02
GB485062A (en) 1938-05-13

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