Abstract:
Wrist and ring mounted watches having a display face and an actuation mechanism to illuminate the display face. For a wrist watch, the display face is disposed on one side of the watch case adjacent the watch band with the actuation mechanism on the opposite side of the case whereby through moving the case against a sufficiently solid object, the display face is illuminated. Alternately, the wrist band may be expansible where it connects to the case and by twisting the wrist sufficiently to expand same, the mechanism is actuated which illuminates the display face. With a ring watch, the actuation mechanism is a nob on the side of the case or of the ring whereby it can be actuated by an adjacent finger.

Description:
SUMMARY OF THE INVENTION 
     This invention relates to watches and is particularly concerned with watches having a display face and mechanism for illuminating or forming images on this display face to indicate the time. It is known to provide such a watch with a control-knob which can be actuated by pressure to actuate this mechanism. 
     According to one aspect of the present invention there is provided a watch having a display face and mechanism for illuminating or forming images on this display face to indicate the time, the watch being connected with a fastening member for fastening the watch on a finger, the mechanism including actuating means disposed for operation by one of the other fingers of the same hand. Preferably the fastening member is in the form of a finger ring, and in this case the actuating means can be a control-knob arranged in the ring. 
     According to another aspect of the present invention there is provided a watch having a case with a display face and mechanism for illuminating or forming images on this display face to indicate the time, the case being connected with a bracelet that is fastened to at least one side of the case by a connection that comprises at least partly actuating means of said mechanism. Preferably the construction is such that by a movement of the arm bearing the watch, or of the hand of this arm, the actuating means can be operated to cause the time to be displayed. 
     For a better understanding of the invention and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which: 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a side elevation of a wrist watch, 
     FIG. 2 is a plan view of the watch shown in FIG. 1, 
     FIG. 3 is an elevational view of the watch shown in FIG. 1 taken in the direction of the arrow III in FIG. 1, 
     FIG. 4 is a side elevation of a further embodiment of a wrist watch, 
     FIG. 5 is a plan view of the watch shown in FIG. 4 taken in the direction of the arrow V in FIG. 4, 
     FIG. 6 is a side elevation of the watch shown in FIG. 4 taken in the direction of the arrow VI, 
     FIG. 7 shows a further embodiment of a wrist watch, 
     FIG. 8 is a plan view of the watch shown in FIG. 7, partly broken away to show a structural part schematically, 
     FIG. 9 is a side elevation of the watch shown in FIG. 7 taken in the direction of the arrow IX in FIG. 7, 
     FIG. 10 is an elevational view of a ring watch, 
     FIG. 11 is a plan view of the watch shown in FIG. 10, viewed in the direction of the arrow XI in FIG. 10, 
     FIG. 12 is a side elevation of the watch shown in FIG. 10 taken in the direction of the arrow XII in FIG. 10, 
     FIG. 13 is an elevational view like FIG. 12 of an alternative form of ring watch, and 
     FIG. 14 is a side elevation like FIG. 12 of a further form of ring watch. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The wrist watch shown in FIGS. 1, 2 and 3 has a case 1 that accommodates a time mechanism and that is pivotally fastened at opposite sides to a bracelet 2. The watch case 1 is rectangular, viewed on plan, having a width 3 and a length 4. Viewed from the side (FIGS. 1 and 3) the case 1 is thin and has a height 6 along one short side 5 of the rectangle that is about three times the height or thickness near the other short side 7. The case 1 has a slightly concave inner face 9. The outer face 10 gradually slopes from the side 5 towards the side 7 so that the height of the case gradually decreases from the side 5 towards the side 7. Recessed within the case near and high side 5 is a display face 11, on which a time indication in hours and minutes, and in some forms seconds, or the date, are displayed. The face 11 is rectangular and elongated and is located in a cavity 16 at a distance 12 from the side 5 of the case 1. The lower and upper faces 13 and 14 respectively of the cavity 16 converge towards the display face 11. Along the side 5 the cavity 16 is covered by a transparent cover 15, for example of glass. 
     As the display face 11 is located on the side of the case 1, and particularly as the watch is a wrist watch, reading of the time indication is facilitated as it is not necessary to turn the arm to an appreciable extent to view the display face. To this end it is preferable that the watch is worn such that the display face 11 is located on that side of the wearer&#39;s arm which faces his body and eyes. Owing to the location of the display face 11 at a distance 12 inside the case, the face 11 is shielded from external light to an extent such that a mirror effect on the face 11, or on the cover 15, is avoided. Locating the display face 11, on the side of the watch case 1 is particularly suitable for digital time indication, which is shown in FIG. 3 by way of example for the time of 1 minute before 10 o&#39;clock. 
     The wrist watch shown in FIGS. 4, 5 and 6 has a case 20 to which a bracelet 21 is fastened. Viewed from the side (FIG. 4) the case 20 is thin and substantially flat and rectangular, being only slightly curved to match the shape of a wrist. The case 20 is also rectangular viewed in plan (FIG. 5), having width 22 and a length 23. Near a short side 24, where the case is pivotally connected with the bracelet, a display face 25 is provided inside the case 20 at a distance 26 from the side 24, the face 25 being in a cavity 28 that is covered at the side 24 by an inclined, transparent cover 29, for example of glass. Near the side 25 opposite the side 24 there are two control-knobs 31 and 32 of a control-mechanism. The knobs 31 and 32 are located one on each side, and at a distance from, the longitudinal center line 33 of the case 20. Actuation of one of the knobs, for example 31, causes display of the time in hours and minutes on the display face 25, whereas actuation of the other knob 32 causes the date to be displayed on the face 25. If desired, a further control-knob may be provided for actuating a time indication in seconds, or if desired it can be that actuation of the knob 31 brings about display of the time in hours, minutes and seconds. As in the case of the watch of FIGS. 1 to 3, the disposition of the display face 25 facilitates reading the indications displayed. 
     The watch is particularly suitable for computer-controlled time and date indications on the display face 25. The indication may be constant (in which case, e.g. one or more of the control knobs are omitted) or it may appear only upon the depression of one or other of the control-knobs 31, 32. The knobs 31 and 32 are preferably push-buttons on which a pressure is exerted for producing the display on the face 25. However, different kinds of control-knobs, for example, sliding knobs may be employed. It is advantageous to subject the control-knobs to spring action so that they are constantly held in a predetermined initial position, in which they are inoperative. The location of the knobs is preferably such that they can be readily actuated by pressing them against any object so that manual actuation is not necessary. 
     The wrist watch shown in FIGS. 7, 8 and 9 corresponds basically with the embodiment shown in FIGS. 4, 5 and 6, the control-knobs 31 and 32 being, however, omitted. Instead the fastening 36 of the bracelet 21 to the case 20 includes, near one side 35, a control-mechanism which becomes operative when the stress on the bracelet 21 increases, for example, by a movement of the arm. For example, a movement of the hand with respect to the arm will cause the arm to expand so that the end of the bracelet fastened to the case 20 is displaced with respect to the case, for example, by providing a pivot pin 37 mounted in slots 38. The pin 37 serves for actuating a switching mechanism, for example, of the kind shown schematically in FIG. 7, which comprises a rod 39 carrying a knob 40. When the pin 37 moves in the direction of the arrow 41, the knob 40 comes into contact with a counter-contact 42. The rod 39 is surrounded by a spring 43 which holds the switching member 40, 42 in-operative in the normal position. When the switching member 40, 42 is actuated the time mechanism, for example, an electronic mechanism, is actuated so that a time indication is displayed on the display face, for example, in digits, preferably the spring 43 is acting in such a way that movement between the case of the watch and the bracelet is minimized for contacting the switch-members 40 and 42. 
     The finger watch shown in FIGS. 10, 11 and 12 has a substantially flat case 50 having a height 53. The dimensions of the case may be varied. The watch case 50 is mounted on a ring 54 which can be slipped onto a finger. The watch case 50, viewed on plan (FIG. 11) is substantially rectangular and has a width 51 and a length 52. In this embodiment the case and the ring are rigidly secured to one another. A long side of the case is provided with a control-knob 55 in the form of a push-button for actuating the time mechanism so that the time is displayed in digits on the display face 56 as is shown in FIG. 11 for the time of one minute before ten o&#39;clock. The knob 55 is disposed on one side of the ring so that it can be actuated by a finger of the hand concerned, for example, by a finger located near the finger carrying the ring with the watch. As a matter of course, the knob 55 may be actuated in a different way. 
     FIG. 13 shows an alternative position of the control-knob 57, which is here located at approximately midway the height 58 of the ring or slightly higher. At this place the control-knob 57 can be readily actuated by the thumb, when the space between the fingers, one of which is carrying the ring, is made free. Although, viewed on plan, the control-knob 57 is located on the right-hand side of the ring, it may in principle also be fastened to the opposite long side so that the knob 57 can be actuated by a finger located on the other side of the finger carrying the ring. If desired, a push-button may be provided on each side of the ring so that the actuation of one button may result in a time indication in, for example, four digits and the actuation of the other button in an indication of the date on the display face 56. 
     FIG. 14 is a side elevation of an embodiment in which two control-knobs 60 and 61 are shown side by side. As described for the knobs 31 and 32, one knob may serve for the indication of time in hours and minutes and the other for date indication. 
     In some cases it may be of worth to provide the actuating mechanism with a change-over contact so that repeated actuation of the mechanism alternatively produces different indications, e.g. alternatively a time indication in hours and minutes and a date indication on the display face. 
     As has already been mentioned, the watch constructions described are particularly applicable to digital time indications by, for example, computer-controlled timers.