Патент USA US2108342код для вставки
Feb. 15,1933. ' 2, 108,342 A. W..LE FEVRE' DIAL FOR INDICATING INSTRUMENTS Filed Sept. 12, 1933 3 Sheets-Sheet 1 zqraém W‘Zefédke. A; 15 1451-0‘ w Feb. 15, 1938. A_ w_ LE FEVRE 2,108,342 DIAL FOR INDICATINGv INSTRUMENTSU' Filed Sept. 12, 1953 is Sheets-Sheet '2" £65 1425107726195. vFeb. 15, 1938. A. w. LE FEVRE 2,108,342 _ DIAL FOR INDICATING INSTRUMENTS Filed Sept. 12, 1935 $.Sheets-Sheet 5 jgroézz Wlefédre. M417 Patented Feb. 15, 1938 2,108,342 UNITED STATES PATENT OFFICE _ 2.108.342 DIAL FOR INDICATING INSTRUMENTS Arden W. Le Fevre, Chicago, 111., assignor to Stewart-Warner Corporation, Chicago, 111., a corporation of Virginia ‘ ' Application September 12, 1933, Serial No. 689,103 2 Claims. (01. 116—129) The purpose of this invention is to provide a dialed instrument with an indicator dial adapted to be illuminated from the interior at the point of the graduated element at which the index ele i ment is registered with the indicating gradua tions, and having interior illuminating means; whereby the indication of the dial can be read at night without having the aid of exterior illum inating means. D ' " Other speci?c and collateral purposes are in dicated in the speci?cation. ' I The invention consists in the elements and fea tures of construction shown and described as in dicated in the claims. . , , Figure 11 is a face view of the same, similar inv characteristic to Figure 5, that is,‘ showing the instrument seen in Figure 9 under the conditions 5 de?ned in the description of Figure 5. Figure 12 is a. section at the line l2—|2 on Fig ure 9. Figure 13 is a face view of the ?xed element shown in Figure 9. 10 Figure 14 is a face view of indicator disk of the instrument shown in Figure 9. Referring to the drawings in detail, and ?rst vention in a speedometer. - Figure 1 is a face view of an instrument of the character of a combined speedometer and odom ) III-10 on Figure 12. - to the ?gures showing the embodiment of the in " 5m In the drawings: removed, as at a plane indicated by the line . 15 The instrument casing is seen indicated in en eter having its speed-indicating dial element con structed and arranged for embodying this in tirety at A, with the face plate, A1, constituting the ?xed element of the dial made of transparent material, as glass, having'an annular zone, 30, of vention. its surface de?ned between inner and outer con- 20 ’ _ . centric circles, 3| and 32, at which said face plate is rendered thorough-1y opaque by suitably dark Figure 2 is a section at the line 2-2 on Fig ure 1. ‘ Figure 2E is a section at the line 2L2“ on Fig- . ‘ colored surfacing coating applied to the inner surface of the face plate, said zone, 30,- being ure 2, on a reduced scale. 5 Figure 3 is a face view of the ?xed element of the dial having the graduations. . Figure 4 is a face view of the oscillating or ' rotary element having the reading index. Figure 5 is a. view similar to Figure 1, but show ) ing the graduations as they may be presumed to rendered translucent by suitable 1ight-co1ored'25 coating applied to the inner surface. The trans lucent zone, 30, carries the speed graduations, seen at 33, at the inner circumference of said zone, and thus at the inner circle, 3 I, above men- . tioned, and in said translucent zone are seen the 30 appear in! the absence of daylight or exterior ‘il numeral markings indicating ‘miles per hour of lumination, and when the interior illuminating lamp is energized, thatis, imperfectly readable speed from zero to 130. A central circular area of _ as indicated by the delicate delineation of the i graduation numeral markings contrasted with the bold line delineation of the illuminated grad uation numeral with which the index is regis tered. ' ' Figure 6 is a face view of a shield interposed ' behind the oscillatory or rotary element for cer tain purpose hereinafter explained. Figure 7 is a detail view of'an index arrow head. ' _ Figure 8 is a section at the line 8-8 on Figure 5, having the part, B, exaggerated as to thick ness so that certain cross-hatching may be read able for indicating color. ' Figure 9 is a face view of the control device of a radio-receiving instrument embodying this in vention, the dial graduations including numeral the face plate, indicated at 31, is rendered‘ com pletely opaque (except as to openings in the opaque coating hereinafter mentioned) by suit- 35 table dark coating applied to the inner surface of said central area; and there is thus de?ned be tween said inner circular area and the translu cent zone, 30, a transparent annular zone, 38. The openings in the opaque coating above re- 40 . ferred to, seen at 3‘!3 and 31”, are necessary for exposing the odometer mileage travel readings _of the elements 31° and 31d. These odometer elements are also seen in their circular outline in Figure 2. ‘ . designations of sending stations with which the wardly protruding ?ange, 43, of the casing in the radio-receiving instrument is to be tuned. . familiar manner of such instruments. The oscillating element of the dial is seen at B, FigureiO is a face view of the same with the bezel and crystal and ?xed element of the dial 45 The face plate, A1, is shown held in ?xed posi tion on the front shoulder, 40, of the casing by being clamped thereon at the outer circumfer ential margin of said face plate by‘the bezel, 4|, which carries the front ‘glass closure plate or 50 crystal, 42, and which is clamped to the out-i carried by the spindle, 45, of the spring-resisted 55 2 2,108,342 oscillator of the speedometer which may be illuminates the outline of the arrow head, 50, understood to be of the magnetic type, in which so that by both illuminations the arrow head is the oscillator is the magnetic drag element, seen clearly visible for thus locating the registration at 46. ° - The oscillating dial element, ‘.8, which is light colored as to its front face, has a central open ing indicated at 41, rendering it annular with radial spokes, 48, connecting its annular part of the middle point of the window with the grad nations. For the purpose of rendering the illumination of the index arrow through the pane, 55, therein uniform at all positions of the' arrow head as it with the central hub, 49, by which it is mounted is carried successively into indicating registra 10 on [the spindle, 45, as described; and it is pos1-' tion with the successive dial markings, there is 10 tioned back of the graduated ?xed element, A1, shown mounted in ?xed position ‘behind ‘the os and spaced therefrom as seen at 39 in Figure 2 cillating element, 13, secured to the casing, as sufficiently to ensure freedom from frictional indicated at 63, and spaced back from the ele ‘contact therewith, and for the further purpose ment, B, as bythe slight bead, 5B, protruded ‘hereinafter explained of having the advantage of from the rear face of the element, B, as seen in 15 the light color of the oscillating element for Figure 2, a shield plate, 65, peripherally shaped ,di?using the interior illumination as hereinafter and dimensioned to cover or shield from the ‘described. At the proper point in the annular beams of light issuing from the lamps, 60, 60, all of the area of the face plate, A1, within the inner zone of the oscillating element, B, which is be hind the transparent zone, 38, of the ?xed ele , circumference of the translucent zone, 30, of the ment, A1, the element, B, carries an index mark face plate, said shield having an area, 65!, cor responding to the blackened opaque central area shown in the form of an arrow head, 50, for day light reading on the graduated dial element of of *the face plate and having» the area extending the indication of the instrument, according to the radially therefrom between the initial and ?nal 25 registration ofsaid index mark with the gradua graduation markings similarly blackened, the re tion of the ?xed element, and in the zone, 52, of mainder of the forward face of the shield being white. In the central blackened area of the the oscillating element outside said ?rst men tioned zone and coinciding with the translucent shield there are necessarily provided apertures, zone 30 of the ?xed element, A1, said oscillating I55EL and 55‘), corresponding to the apertures, 31' 30 element has a window or light-transmitting and 31b, of the face plate, A1, for exposing the 30 ' opening, indicated at 53, which may be closed by odometer mileage travel readings. A further a transparent pane indicated at 54, preferably service performed by this shield consists in con colored any color, shown colored green; and with-' trolling the light which passes through the aper in the surface area de?ned by the outline of said tures 65*‘ and 85b and between the circumference 35 arrow head index mark the oscillatory element of the shield and the bead 55 of the element B, has a second light-transmitting aperture closed so that this light outlines the arrow-head at its pane, 55, and also illuminates the annular gap by a transparent pane, 55, shown colored red. Within the casing at positions available by between the forward white face of the shield reason of being unoccupied by the speedometer and the rear or inner face of the rotating ele ment B. This light is thus ‘diffused uniformly 40 40 and odometer mechanisms and clear of mecha nism between such location and the oscillating over the annular path in which the'arrow-head dial element there are mounted illuminators,--‘ is carried by the rotation of the element B. Referring to the construction shown in Fig as illustrated two,--which, as shown, are electric lamp bulbs, 60, which, when energized, illumi 45 nate the interior of the casing; and from these illluminators some light passes, as above men tioned, at 39, to the space between the member B andthe face plate A1, de?ned by the translu cent zone 30 of ‘the face plate, and at the same 50 time said illuminators cast a beam of light through the window, 53, of the oscillatory ele ment, B, rendering the area of that window prominently ‘luminous behind the graduations .ure 9 in which‘ the invention is embodied in the dial control device of a radio-receiving instru ment: The casing is indicated at D, with its 45 face plate, D1, of transparent material constitut ing the ?xed graduation-bearing dial element. The rotating element having the index for read- ‘ ing the indication according to the registration of the index with the graduations and the grad uation numerals is indicated at E. In this embodiment of the invention the trans and numeral graduation markings of the ?xed ' parent zone, 10, of the ?xed graduation-bearing 55 element, A1, as the window is carried in the os- ‘ element, D1, is outside the translucent zone, ‘II, 55 rendered-translucent by a properly thin light , cillation of the oscillatory element past the suc cessive graduation markings; and by this means the illuminated window becomes the index co operating with the graduations for“ reading the speed indication of the speedometer. Since to enable reading these indications at any and all positions of the oscillating element, the window 'must'have arcuate extent for lapping two con secutive numeral markings, so that at least one 65 of them can be read, and since for accurate reading the registration ‘of the middle point of the arcuate extent of the window with the grad uations should be noted, the index mark con sisting of the arrowhead, 50, is located in radial 70 alignment with the middle point of the arcuate extent of the window, and the illumination de scribed includes a slender beam of' light cast through the pane, 55, in the arrow head index mark, and at the same time the re?ection af 75 forded by the crystal or front closure glass, 42, colored coating on the under side; and said ?xed element is without apertures at the central area, and at that area, indicated at 12, is rendered completely opaque by opaque dark colored coat-l ing on the inner side. The rotatingv element, E, so which has the index arrow head, 13, for co operating with the graduation numerals, 5 to 15, for reading. the indication of the instrument, carries said index mark, 13, in a zone of said rotating element which is behind the transpar 65 ent zone, 10; and the window indicated at ‘I5 in the rotating element is located in the zone of said element, E, which rotates behind the trans lucent zone, ‘ll, of the face element; and as in 70 the ?rst describedv embodiment the rotatable ele ment has its outer surface light colored for dif fusing the light admitted through the window, 15, so that the outline of the index arrow-head, 13, which is radially aligned with the middle 75 3 2,108,849 point of the circumferential dimension of the window, 15, is‘ rendered clearly visible‘ through the transparent zone, 10, of the element, D1, while the particular graduation numeral which happens to be registered with the window, 15, is lighted morebrightly than the other numerals _ of the translucent zone, ‘II. _ I In this embodiment the illuminating lamp bulb, 80, is mounted in a suitable bracket mem 10 ber, 8|’, which is rigid with the hub, 82, of the rotatable element, E, so as to be rotated with the latter for carrying the lamp bulb maintained in position directly behind the window, 16, so that the illumination a?orded through the .win 15 dow is equal atall positions of the rotatable element. I claim: ' , ' ' 1. In a dialed instrument, in combination, a casing, cooperating dial elements respectively interposed between thevilluminating means and the rotatable element and covering the area of said element in which said index mark is lo cated, said shield being spaced back from the rotatable eiement and having an aperture out of registration‘ with the index mark for; admit ting light to the inter-space between the shield and the rotatable element, the face of the shield toward the latter being light-colored for di?usé ing the light over the path of rotation of the 10 index mark. - 2. In a speedometer, a dial formed with circu larly disposed concentric zones, at least one of said zones being translucent and having grad-V nations thereon, an indicator disk mounted be hind the dial and having opaque zones coter ‘minous with the concentric zones on said dial, and a light source behind the indicator disk, the latter having radially spaced indicating win 15. 20 and rotatable,the ?xed element having an dows through which the light source may be v20 ?xed annular zone carrying the dial graduations, the , directed through the concentric zones in the movement 01.’ the indicator disk, one of said win rotatable element being an opaque disk carry ing an index mark having its terminal portion dows serving as anindex mark, the indicator disk and dial being provided with transparent disposed for registration with the dial gradua areas registering with each other to permit the 25 tions, said index mark comprising a light-trans 25 ' mitting aperture in the rotatable element, an observation of the digits of an'odometer. “ illuminating means within the casing, a shield ' ARDEN W. LE EEVRE.