Патент USA US2132302код для вставки
Oct. 4, 1938. - J. D. KENNELLY 2,132,302 LAMP STRUCTURE Filed April 3, 1956 ‘ 1.7/4 2 Sheets-Sheet 1 Oct. 4, 1938.~ 2 J. D. K NNELLY 2,132,302 LAMP STRUCTURE Filed April 3, 1956 17 26 2 Sheets-Sheet 2 Patented Oct. 4, 1938 2,132,302 UNITED STATES PATENT OFFICE 2,132,302 LAMP STRUCTURE Jeremiah D. Kennelly, Oak Park, Ill. ‘ Application April 3. me, serial No. 72,652 1Claim. (Cl. 240-48) This invention relates particularly to lamp casing-like frame A; and D’, motor-driven mech structures adapted for use on motor vehicles or the like. The invention is well adapted, for ex ample, for use on police motor vehicles, fire, trucks, or in other situations where warning sig nals are desirable. In some respects, the invention constitutes an improvement upon the invention disclosed and claimed in my U. S. Patent 1,991,101, granted 10 February 12, 1935. ‘ The primary object is to provide a simple lamp structure of the character suggested which will operate in a highly effective manner to cast a warning beam in front,,for example, of a fire 15 truck, or other motor-driven vehicle. . An important feature of the invention is the anism serving to oscillate the shaft B’ and also to oscillate the lamp-mounting C. ‘ One terminal of the lamp and one terminal of the motor are grounded, preferably. The lamp casing Bis provided at its lower por tion with an opening, as indicated at i, into which projects a ?ange with which the upper portion of a disk-like cap plate 2 is provided. The shaft B’ extends through the cap-plate and 10 is secured thereon by nuts 3. Preferably a ball bearing 4 supports the shaft B’ and the lamp carried thereby. The lower end of the shaft B’ is equipped with an arm 5 with which is pivotally connected a link 8 provided with 9, depending pivot-mem provision of a, simple and desirable device for ber 6“. maintaining a circuit to the electric bulb of a The mounting C of the lamp-bulb extends lamp which is being oscillated about a vertical freely through an opening 1 in the rear portion 20 axis; a further feature of improvement is the ., of the re?ector 1“ which is ?xedly mounted in provision of a mounting for the lamp bulb which the lamp-casing; and the mounting is connected is adapted to oscillate about a horizontal axis, the by a transverse pivot 8 with the hollow neck por re?ector in which the bulb is located being, in tion 'lb of the re?ector. The mounting C is this instance, stationary; and a further feature shown equipped with a clamping ring 9 which is 25 of the invention is an improved device which connected by a link 10 with a vertical plunger provides for variation of the course of the beam II which works freely through the shaft B’. of light without the necessity of physically tilt \ The outer terminal of the lamp-bulb is ground ' ing the bulb or the re?ector in which the bulb ed through the mounting C and its connections. is mounted to raise and lower the beam of light. The central terminal of the plug-portion l2 of A more complete description of the features of the lamp bulb makes the usual contact with the 30 improvement will appear in the description which adapter C and is electrically connected, in a 30 follows. known manner, with a conductor wire i3 which The invention is illustrated in the accompany extends downwardly through the shaft B’ to a ing drawings, in which— 35 Fig. 1 is a broken vertical sectional view illus trating a lamp device constructed in accordance with my invention; Fig. 2, a broken horizontal sec tional view taken as indicated at line 2 of Fig. 1, illustrating the manner in which a circuit is 40 maintained duringoscillation-oi' the lamp-cas-_ ing; Fig. -3, a broken horizontal section taken as indicated at line 3 of Fig. 1: Fig. 4, a broken horizontal section taken as indicated at line 4 contact-carrier H which is insulatingly support ed by the lower end of the shaft B’. 'As illus trated in Fig. 2, the member 14 is attached to an enlargement at the lower end of the shaft B’, as by means of screws l5, suitably insulated. An insulation disk 16 is interposed between the mem ber l4 and the lower end of the shaft. The member It carries a spring-projected con tact-member ill which is yieldingly held against a curved, segmental contact-member I‘! which is insulatingly connected with the frame A at points I18. Referring to Figs. 1-4, A designates a frame, As will be understood from Figs. 1 and 2, the shown as in the form of a casing, which is adapt ed to be mounted, for example, upon suitablev conductor 13 preferably extends through an open supporting forks at the front end of a motor ve-. ing in the disk I4 and has a bared end which is electrically connected with the disk H .by 50 hicle; B, a lamp-casing equipped with a de pending shaft B' journaled to oscillate in the means of one of the screws i 5. Thus, current front portion of the frame A; C, a lamp-bulb may be passed continuously upward to the lamp mounting carrying a lamp-bulb C’ adapted to bulb, notwithstanding the oscillation of the be oscillated in the rear portion of the re?ector; lamp in a horizontal plane. ' 55 D, a motor mounted in the rear portion of the The lower end of the plunger ll 1.. engaged l5 of Fig. 1; and Fig. 5, a vertical sectional view, 45 partly in elevation, illustrating a modi?cation. 2,182,802 2 by a bell crank lever l8 adapted to be actuated by a link IS. The motor D has a shaft equipped with a worm 20 which serves to actuate a worm-wheel 2| journaled on a vertical axis and a worm-wheel 22 journaled on a horizontal axis. The pivot member 6*i of the link 6 is eccentrically connected ‘with the worm-wheel 2|. That is, the member 6“ serves as a crank for actuating the arm I and effecting oscillation of the shaft B’. The link | 9 is connected by an eccentric pin I9a with the worm-wheel 22, and thus the bell crank lever |8 will be oscillated by the rotation of the wheel 22. 15 ' Current is supplied to the motor and lamp‘ through a conductor 23 which has a branch 23. leading to the motor and a branch 23*’ which is' electrically connected with the ‘segmental contact |‘| through the medium of one of the bolts 24 20 which serve to connect the segment insulatingly to the frame A. I The base frame, which constitutes a housing for the motor and the driving mechanism actu ated by the motor, is shown provided with per 25 forate lugs 25 by means of which the frame may be securely mounted upon forks or brackets at the front end of the motor vehicle. Current may be supplied from any suitable In connection with Fig. 1, 26 indicates _ Source. 80 a battery'having one terminal grounded at 21. Current from the battery may be passed through a switch 28 to the conductor 23. From the de scription given, it will be understood that as the motor operates, the worm 20 actuates the worm wheels 2| and 22 continuously, thus causing the lamp casing to oscillate about a vertical axis and causing the lamp bulb to oscillate about a hori zontal axis. The e?ect is to cause the beam of light thrown by the lamp to cross itself. Any desired timing of the oscillations about the ver tical axis with respect to the oscillations about a horizontal axis may be employed. It is pos sible, by selecting a suitable gear ratio, to pro duce a ?gure 8 con?guration of the beam-path, 45 as more fully explained in the above-mentioned patent. In the modi?cation shown in Fig. 5, the gen eral construction is the same as already de scribed, and corresponding parts are designated by corresponding reference characters. In this 50 case, the oscillating lamp-bulb mounting is dis pensed with. Instead, an adapter C2 is longi tudinally adjustable, for focusing purposes, in a sleeve 29 with which the rear portion of the 55 ?xedly mounted re?ector is provided. The adapter, or mounting, carries a lamp-bulb C3 which is provided with ?laments 30 and 3|, spaced one above the other. The construction shown in Fig. 5 provides for alternate energizing of the ?laments 30 and 3|, thus alternately raising and lowering the light emitting source. The outer terminal of the plug portion of the lamp, designated 32, is grounded through the reflector and lamp casing. The central or intermediate terminals of the ?la ments 30 and 3| are designated 30“ and 3|‘ re spectively. They contact with‘ members‘ 33 and 34 which are electrically connected with con ductors 33* and 34“ which lead downwardly 10 through the shaft ‘.8’ which carries the lamp casing. The shaft B is' oscillated through} the medium of the worm-wheel 2| in the manner described in connection with Figs. 1-4. A worm wheel 22“ replaces the worm-wheel 22 of the 16 other construction and serves to actuate a cam segment 35 which is adapted to alternately ‘close switches 36 andjl-which are mounted inthe casing-like frame A. The switch 36 controls the energizing of the conductor 33“; and the switch 20 31 controls the energizing of the conductor 34“. As stated, the ?laments 30 and 3| are'alter nately energized and heated to incandescence. Owing to the fact that the ?laments are located in different horizontal planes, or at di?erent 26 levels, the effect is to cause an up-and-down movement of the beam as the ?laments are alternately energized. Also, an interruption of the light occurs, the length of interruption de pending upon the length of the arc of the seg ment 35 which closes the switches in alterna 30 tion. Preferably, the interruption is long enough to enable the interruption to be readily detected by the eye, so that distinct ?ashes are noticeable. ' The foregoing detailed description has been given for clearness of understanding only, and at no unnecessary limitations should be understood therefrom. What I claim as new and desire to secure 40 by Letters Patent is: In a signal lamp device of the character set forth, a motor casing, a motor therein, a lamp casing supported by said motor casing, a reflector ?xedly supported in said lamp casing, said re 45 ?ector being centrally apertured at its rear side, a lamp bulb mounting extending, through and pivotally supported on a horizontal axis within said aperture for vertical oscillatory movement therein, said mounting having a rearwardly ex 50 tending shank portion of substantially uniform diameter, a light bulb in said mounting, a clamp ing ring mounted on said shank and adjustable therealong toward and away from the pivot of said mounting whereby to vary the throw of said light bulb, and actuating means, driven by said motor and connected to said clamping ring. JEREMIAH D. KENNELLY.