Патент USA US2137161код для вставки
Nov. 15, 1938.. A. Ef».4 GRANTHAM 2,137,161 TRAFFIC SIGNAL Filed June 12, 195@ Ü» $0 \ YAl _ v¿_ - '2 .Sheets-Sheet l ä WU Mako-1, Patented Nov. 15, 1938 2,137,161 UNITED s_TAîrEs 'PATENT OFFICE TRAFFIC SIGNAL Aubrey B. Grantham, Douglaston, N. Y. Application June 12, 1936, serial No. 84,930 2 Claims( (01.177-337) This invention relates to an improvement in traffic signals, and more particularly to auto matic signals such as are ordinarily used for di recting vehicular traffic, particularly at inter 5 sections of streets or roads. l The object of the invention is to provide> in such automatic traflic signals, deñnite indica tions of the direction of Vtraffic movement by the 'shape and position of the illumination- thereof, l0 in addition to the color of the lights, so that the signals will be clearly understood by motorists, as well as by pedestrians, even though such per sons may have lost their color sense and become what is usually referred to as “color blind". 15 In carrying out this object, the signal lights, which may be controlled in the usual 4way by automatic equipment, are of distinct shapes and positions and, in the preferred embodiment of Fig. B is a side elevation of a similar form of the invention; Fig. 9 is a verticalsectional view through the horizontal arm thereof, taken on the line 9-9 of Fig. 8; and ‘ F“Fig v10 is a horizontal sectional view through the vertical arm thereof, taken on the line lll-_:Iû'of Fig. 8; ` In the embodiment of this invention illus trated in Figs` 1 to 6 of the drawings, the traffic 10 signal comprises a casing designated generally by the numeral I, which is substantially L-shape when 'viewed from any side, top, or bottom, so as to provide a‘pair of horizontal arms 2, which ex tend laterally in different directions from the upper end of a vertical arm 3. Each of the hori zontal arms 2 has Windows 4, in opposite sides thereof, when the signal is intended to control the invention, this presents a horizontal bar of 20 red light and a vertical bar of green light to indicate, respectively, closed and clear or open traffic moving in opposite directions where a traffic lanes, which respective bars of red and signal is used on each corner of the intersection as has been customary with some traffic signals green light are arranged facing in the same di rection and are designed to be energized or il 25 luminated alternately for indicating, respective 1y, “stop” and “go”, according to which of the lights is illuminated. The arrangement of the lights in horizontal and vertical relations defl nitely indicates both to motorists and pedestrians 30 the direction of movement of the trafñc along the respective lanes, even though such persons may have lost their color sense. The signal has provision for simultaneously controlling intersecting trailìc lanes, by present 35 ing controlling bars of light in different direc tions at adjacent, and if desired, also opposite sides thereof, and alternating the signals with out bodily movement of the signal device. The accompanying drawings illustrate dif 40 ferent embodiments of the invention, in which1--Fig. l is a perspective View, showing one form of signal mounted on a cross Wire, which is use ful at the middle of an intersection; Fig. 2 is a similar view showing the mounting 45 of a signal on a post; Fig. 3 is an isometric View of this form of signal; Fig. 4 is a top plan view thereof; Fig. 5 is a vertical sectional view through one 50 of the horizontal arms, taken on the line 5_5, -of Fig. 3; Fig. 6 is a horizontal sectional view of the vertical arm, taken on the line 6_6, of Fig. 3; Fig. 7 is a side elevation, showing a slightly 55 diiîerent illumination for the signal; single signal is used at the street intersection, but there may be only one window 4, when the heretofore. Illuminating lamps 5 are arranged in the arms 2 for illuminating the windows 4. The Windows 4 are preferably provided with glass or other transparency colored red, in order to indicate, when illuminated, that the trañ‘ic should stop in that direction. The Vertical arm 3 is shown as provided with 30 four windows 6, one on each side thereof, which should also be formed by glass or other trans parent material, and preferably are colored green to indicate the direction of movement of trafiic. Lamps 'l are shown as arranged within the verti cal arm 3 for illuminating the windows ä. Less than four windows 6 may be used, if desired, as for instance, one, when the signal is used on each corner of an intersection. It will be understood that the automatic trahie 40 signal embodying this invention is not bodily movable to different signalling positions, but it is adapted to present different bars of light in the same direction, as green and red alternately, and also alternating with other lights on adia cent sides, Without bodily movement of the signal. The forms of the invention shown here present a novel and distinctive form of traffic signal which is shown as approximately L-shape when viewed from any side, although it is obvious that it may . be made square as indicated at 8 in Fig. 4, if desired, or of triangular or other shape in plan. In the form of the invention shown in Fig. 7, horizontal and vertical lighting tubes 9 and IU 55 2 2,137,161 are arranged on the respective arms of the sig nal, which tubes may be gaseous discharge tubes of the character of neon tubes, and used in place of the lighted windows described above. A more complete signal of this character is shown in Figs. 8 to 10 of the drawings, in which a casing 2| has horizontal and vertical arms 22 and 23 extending therefrom, which arms are not of box type, but rather are of skeleton frame type as shown in the sectional views, Figs. 9 and l0. The horizontal arm 22 has a vertical web 24 with a cover 25 extending over the arm, including the web 24 and secured thereto, while the end of tinctly contrasting shape, such as horizontal and vertical areas, in the form of bars of light ar ranged to be viewed alternately from one point 10 of view at a side of the signal, which contrast ing areas or bars of light are adapted to be alternately illuminated, as, for instance, by the ' the arm is provided with a wall 26. Bars of light are provided at opposite sides of the arms 22, by means of a gaseous discharge usual control box designated generally by the numeral Il, in Fig. 1, in order to indicate by tube 2l, which extends lengthwise on opposite sides of the web 24, and through said web ad jacent the end wall 26, the inner ends of the tube 2l having the usual electrodes therein at the casing 2l for creating an electrical discharge their color sense. in the tube. As shown in Fig. 10, the vertical arm 23 is of skeleton frame form as indicated at 28, between tc ci the webs of which are arranged gaseous discharge tubes of the neon type designated generally by the numeral 29 for presenting bars of light in diiîerent directions alternately, the light on oppo site sides of the signal arm being presented simul 30 will present horizontal bar of red light to the intersecting street or road simultaneously with the energizing of the tube 29 shown in full lines in Fig. 8 to permit traiiìc to move in the direc tion facing the signal in said ligure. The important feature of the invention is the provision of a plurality of signal areas of dis the shape of the bar of light, as Well as by the color of the illumination, the direction of move ment of trail‘ic, even to persons who have lost The signal may be supported in any well-known 20 or customary manner as, for instance, by a cable I2, shown in Fig. 1, which extends transversely of a street intersection, or by a bracket arm I3, supported by a post i4, as shown in Fig. 2, which may be used at the corner of the intersection. I claim: l. A traffic signal comprising a structure hav ing a plurality of elongated signal arms rigidly connected together at one end and extending taneously, but alternately at right angles thereto. respectively approximately in horizontal direc 30 The tubes 29 are arranged in cross relation, and each of the tubes extends through the skeleton frame structure 28, near the lower end of the arm 23, and have their upper ends joined to the tions therefrom, With a separate signal arm ex tending substantially in a vertical direction from said connected ends, each of said signal arms hav ing an upright signal face for presenting differ box structure 2i, being provided with electrodes ent light signals respectively when illuminated at said upper ends. The gas in the tubes 21 and 29 may be colored in the usual way to present, respectively, red and green light effects when said tubes are energized. 40 The red light tube 2l will be energized simul taneously with the green light tube 29, at right angles thereto, so as to control movement of traíiic in different directions at an intersection without movement of the signal as a whole and 45 without any manual control thereof, being con trolled entirely by the usual automatic equip ment. It will be understood that a horizontal arm corresponding with the arm 22 extends at right angles thereto, so as to stop the movement of trañic on the street or road intersecting that which the arm 22 faces and which other arm alternately. 2. A traiiic signal comprising a structure hav ing a plurality of elongated signal arms rigidly connected together at one end and extending respectively approximately in horizontal direc- l tions therefrom substantially at right angles to each other with a separate signal arm extending substantially in a vertical direction therefrom, each of said signal arms having an upright sig nal face for presenting different light signals respectively when illuminated alternately, the horizontal arms alternately presenting “stop” signals simultaneously on opposite faces thereof and the vertical arm presenting “go” signals on four faces thereof alternately with the corre sponding “stop” signals. AUBREY B. GRANTHAM.