Патент USA US2132938код для вставки
Oct. 11, 1938. ' - w. (3. DUNN ' ANTENNA FOR MOVING VEHICLES Filed June 7, 1937 ' 2,132,938 Patented Oct. 11,1938 " f i: 2,132,938 UNITED‘ STATES PATENT OFFICE 2,132,938 ANTENNA FOR MOVING VEHICLES .' :William G. Clarinda, Iowa 'Application June 7, 1937,v Seriavl'-No._148,704 ‘ V i 7 5y Claims. (01. 250-33) My invention has to do with an antenna pe culiarly adapted for use on moving vehicles, such as motor vehicles, boats, airplanes and the like. More particularly it is my object to provide an antenna of this kind mounted to permit the ~ ' ing driven into a low doorway of a garage and so forth. - - v I have solvedthe problem by providing an antenna adapted to lie ?at where it will be out ofv’the way when the car is not moving or is 5 antenna to lie in position close- to the car body - traveling at low speed, the antenna being pro when the car is standing or traveling “at low speed, and to be moved to a distance‘farther from the car when the car is traveling at higher videdwith means'ffor taking advantage of the air pressure available when the car is traveling, ment and combination of the various parts of for raising the antenna and moving it away from the car. Thus the antenna will have its 10 maximum efficiency when the car is traveling at high speed when maximum e?iciency is most necessary for the proper operation of the radio my antenna for moving vehicles, whereby the set. speeds. ---' With these and other objects in view, my in vention consists in the construction, arrange 15 objects contemplated are ‘attained, as herein after more fully set forth, pointed out‘ in my claims, and illustrated in’ the accompanying drawing, in which: > , " ' ' I have: shown in my drawing two forms in 15 which my invention may be embodied, andto illustrate the fact that it may have a variety of e '‘ embodiments. Figure 1 is a top or plan view of a part of an automobile equipped with a radio antenna em bodying my invention. ‘ ‘_ i j v ‘ Figure 2 is a front elevation of the same. Figure 3 is an enlarged? plan view of the mounting structure, parts being shown in sec e H e - g V e ‘ ' I v an egg shelllfopen atthe bottom and indicated generally by thereference numeral I0, is shown secured to the top of a car II by means'oi' screws 12. tion and parts being broken away.” ' ' Figure 4 is a detail sectional view'ta'ken on the line 4-4 of Figure 3. ‘ In the particular ‘form shown in Figures 1-4 a metal case shaped a good deal like a half of 20 _ Figure 5 is aside elevation of a _'d_iiferent'form ‘Journalled' in the walls of the case ID are 25 parallel shaft-like members l3, preferably made of stiff wire which form parts of wing-like an tenna members A, each having generally the shape of the outline of a wing and being formed ‘ Figure 6 is a top or plan view of the mounting _ by means of wire material. The members l3 are _ . structure of the device shown .in'll‘igure"§;_\and geared 'together‘by small gears ll. of antenna. 30 Figure, '7v isamdetail séctionalview taken on the line 1—1 of Figure 6. 3 Ul > Many attempts have been vmade to provide satisfactory antennae for moving vehicles and particularly for automobiles. ' The‘ rear ends“ of the antenna A normally lie . on the top‘ofthe car H‘, as indicated in Figure 1 ' At low speeds, a very ordinary antenna is sufficient to catch the radio signals as is later made useful by the radio receiving set within 40 the vehicle, but at increasing speeds, due to the sound or rushing of air past the vehicle, and also due to the increased vibration and noise of the mechanical parts of the vehicle, it is found that a more e?icient aerial is then necessary. H It has been'found that by raising the aerial away from the metal parts of the vehicle as nearly a 90° angle as possible that this e?iciency is obtained. In order to meet this problem, aerials of the 50 “buggy whip’? type have been provided. They have been fairly ef?cient but they have not been entirely satisfactory because of the fact, that andrin full lines in Figure 2. At the rear ends of the wing-like antenna members A they are provided with blades IE or 03 5 the like, which may be of metal or other suitable material, so shaped and arranged as to be en gaged by the wind or air when the car travels at considerable speed, whereby the antenna members will be raised from their full line posi as tion shown in Figure 2 to their dotted line posi tion shown in that ?gure. Thus when the car is stationary or traveling slowly, the antenna will be down lying close to the car top, and when the car is traveling cs5 rapidly, the antenna will automatically be raised so that both members thereof will stand nearly upright for thus serving most efficiently the purpose of an aerial. The gears [4 are blank for a considerable por tion of their circumference, so that they can rotate for only certain distances. They are so they project from the car in an objectionable arranged that they partially support the antenna fashion which often' prevents them frombe members when the latter are in their lowered 65 2,132,938 v. curved portions 29 and raise them upifor lifting position to keep them from? wearing on the car top, and they are aiso so shaped that whenethe antenna members have swung. to their full line position, shown in Figure 2, they can move no the antenna to its dotted line position of Fig ure 5. a . I. This structure has all the advantages of the . first described embodiment of my invention. 7 It should be mentioned that the usual precau An antenna of the kind just described is simple and inexpensive to construct. It is not the tions are taken. and arrangements made in way when the car is standing in the garage or mounting the antenna. The casing l0 and the being moved slowly into the garaga' It is amply, bracket I6 are insulatediro'm the car body and the lead-in wires are connected to the antenna 10 10 ef?cient to- operate the radio when the car is not proper and to the car body in the ordinary way. traveling at high speeds. E ' I ‘ closer together. As' will be seen from the double illustration Its construction is such that the antenna mem bers are raised to project away from the car when . ofmy invention, various changes may be made the latteriis traveling at high speeds for thus 15 giving maximum efficiency’ when ‘such ef?iciency isimost necessary. ’ I _ i in the construction and arrangement; of the parts, andv it is my intention to cover the inven 15 tion as broadly as may be in my claims. ' ._ in Figures 5 to 7 I have shown'another" form of antenna. In this form of 1 device abracket , " l6, comprising a_ bottom member I‘! "and lat 20 erally spaced side members I 8, is mounted on the car/top.’ " » 7 ~ * ' - ' " In this form of device the antenna is" a suitable wire loop or U-shaped member 19 having long arms, the? forward ends of which are curved up 25 wardly and forwardly as at 2!! (assuming the an tenna to'be in its downqposition), and jour I claim as my invention; . ' 1. In a structure of the class described, an antenna member, means for pivotally support ing it on a moving vehicle, and means operatively 20 associated with it‘ adapted to be air' actuated for raising; theantenna on its pivot when the ve hicle is traveling. ' ' ' Y 2. An antenna for moving vehicles, means for mounting the antenna for movement toward 25 and from the vehicle, a blade‘ioperatively asso nalled on a cross pin 2| mounted in the upper ' ciated with said antenna and adapted to be ac tuated by air when the vehicle is moving to move parts of theside members I6; " Another pin 22 is mounted in the side walls [8 30 below and rearward with relation to the .pin 2|. . Pivotally mounted on ;the, sides I8, by being .mounted on ‘ItheIpin 22, are arms 23 standing the antenna ‘away from, the Vehicle. ' r 3. The combination of an antenna, with means 30 for mountingzit pivotally on the top of a ve hicle, 'a blade operatively associated Withfthe The arms 23 extend forwardly and antenna, arra'ngedto, be engaged and moved by air when the vehicle travels at high speed, 35 normally lieclose to the, body of the car 24. for raising the antenna toward'upright position. belowtne' curved portions 20 and oppositely curved. :These arms at their forward ends carryia blade 4. An antenna, for moving'ivehicles combined 35 ,with means for» pivotallyr mounting vsame on a A spring 26 is arranged on the pins-2i and 22 vehicle, a member arranged to contactthe air and ;is connected with Eone of'the arms ofthe andl'move'the antenna away from the ;-vehicle 40 yoke 7| 9 in such manner 23.8 to help lift that yoke and cushions its downward movement; and to tend to hold itspaced just above the top of the car. 1 ' w ' ' Normally when the car is standing or moving 45; slowly, the antenna “land the operating blade :25 assume approximately» the positions shown 'in Figure When, however, the car travels at considerable speed and it is, desirable1 to have the highest efficiency ~§rom the radio, the rush 50 of‘air from ingfront efthe windshield against the under side ‘of ;the..blade - 25 ._will cause the blade__25 ‘to’ move upwardly.» This causes?the curved rearjends, oi'_ the arms 23 to engage the when sameisémoving rapidly forward and allow 40 ing to lie'relatively close to the vehicle when same is moving; forwardly slowly, or stopped altogether. ‘I I = backwardly, ' . 7 , _ 5. The combinatiomwith an antenna, adapt ed te normally lie relatively :close to the surface 45 of a/vehicle-when the vehicle is moving back wardly, stopped entirely,v or traveling slowly in a forward direction, and of ya pivoted member adapted to contact the air and be moved away from thesuiifaceof said vehicle when it reaches 50 .a predetermined forward speed, and to move the antenna ‘.away'from, the vehicle. 7 p» V j Y DUNN.