US2395643A - Clock dial - Google Patents

Description

Feb. 26, 1946. R. H. 'RAMsAY CLOCK DIAL Filed June 9,1944 2 Sheds-She's; 1

Feb.26, 1946. R. H. RAMSAY CLOCK DIAL Filed Jl'me 9, 1944 2 Sheets-Sheet 2 g-rvuc/wfo .2706 1/. Fairway Snowy:

' Patented Feb. 26, 1946 UNITED STATES PATENT OFFICE CLOCK DIAL Roe H. Ramsay, Los Angeles, Calif.

Application June 9, 1944, Serial No. 539,446

I 3Cl'aims.

More specifically the invention includes the provision of a disc positioned behind the clock hands, the disc having individual pivoted. plates thereon and adapted to move in accordance with.

the hour hand to indicate the, timev in other cities.

A still further object of the inventionis, the provision of a series of circumferentially arranged plates of this character on a movable disc actuated by the arbor of the hour hand of the clock and in which the indicia appearing on the plates will always remain in an upright position enabling the same to be easily read irrespective of the continuous rotation of the disc.

A still further object is to provide a device of this character of simple and practical construction, which is neat and attractive in appearance, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which-- Figure 1 is a front elevational view of a clock dial illustrating one embodiment of the invention.

Figure 2 is a vertical sectional view thereof.

Figure 3 is a fragmentary rear elevational view of the rotating disc showing the pendulous weight for maintaining the pivoted plates in an upright position.

Figure 4 is a fragmentary sectional view taken substantially on a line 4-4 of Figure 3.

Figure 5 is a front elevational view of a modifled form of clock dial.

Figure 6 is a vertical sectional view thereof, and

Figure 7 is a sectional view taken substantially on the line 'I1 of Figure 6.

Referring now to the drawings in detail and first with respect to the form of the invention 11- lustrated in Figures 1 to 4, inclusive, the numeral Ii designates a clock casing having the clock mechanism 6 mounted therein for rotating the hour and minute hands I and 8 through the gearing'mechanism, shown generally at 9.

Positioned behind the hands of the clock is a circular transparent dial plate [0 and placed' over the hands and dial plate is a transparent cover plate H.

Printed or otherwise suitably displayed on the dial plate H! are the hour numerals l2 and also suitably displayed thereon i a plurality of pointers [3; in an annular series, and each corresponding to one of the twenty-four hours of the day. Also printed or otherwise displayed on the dial plate I!) adjacent the respective pointers l'3 arethe names of cities l4 arranged in accordance with their geographical location.

A disc I5 is positioned behind the dial plate Ill and secured to one of the gears for operating the hour hand I. The disc I5 rotates in a counterclock-wise direction and makes one complete rotation every 24 hours.

On the outer surface of the disc I 5 adjacent the peripheral edge thereof is a plurality of circular plates IS in an annular series, each having a pin i1 rotatably supported in the disc. To the rear ends of the pins H are secured weights l8 which extend radially from the pins to function as pendulums to off-balance the weights so as to maintain the same against bodily rotation during the rotation of the disc l5 and keep the plate "5 constantly in one and the same set position so that indicia on the plate is readily readable at all times during rotation of the disc I5.

Printed or otherwise displayed on the outer surface of the plates I6 is indicia l9 designating one of the twenty-four hours of the day.

In the operation of the device the disc l5 will be rotated together with the hour hand of the clock to move the annular series of plates l6 around back of the dial plate ill, but the indicia appearing on th plates 16 will always remain in an upright and readable position by reason of the weights l8 notwithstanding the fact that the disc I5 is rotating continually.

In the form of the invention illustrated in Figures 5 to 7, inclusive, the clock dial 20 is provided with the pointers 2| and also carries the numerals 22 each designating one of the twenty-four hours of the day. The pivoted plates 23 on the disc 24 which latter is rotatably connected to or movable with the hour hand of the clock are also pro vided with the pendulous weights 25 and the front surface of the plates have the names of the cities 26 printed or otherwise displayed thereon,

of conventional construction The disc 24 rotates in a clock-wise direction and makes one complete rotation every 24 hours.

Otherwise, the construction of this form of the invention is similar to that heretofore explained.

It is here noted that the specified direction of rotation of the disc IS in the one modification and that of the disc 24 of the other modification is in accordance with the illustrated gearing arrangement shown in Figures 2 and 6 of the drawings, respectively, but, if desired, the rotation may be in the direction opposite to that shown and stated, or both discs may be rotated in the same direction, as fa as the present invention is concerned. That is to say, the indicia carried on the respective discs l and 24 may be, obviously, calculated and arranged on the discs accordingly for the desired direction of rotation of the discs.

It is believed the details of construction, operation and advantages of the device will be readily understood from the foregoing without further detailed explanation.

Having thus described the invention, what I claim is:

1. A clock conventional a to comprising hour and minute hands, a stationary transparent dial plate positioned behind the hands and having a local time-indicating dial shown thereon and centrally thereof, a disc positioned behind the dial plate and geared or equivalently connected to the operating arbor of the hour hand for rotation thereby and in calculated timed speed therewith,

a plurality of individual plates pivotally carried.

by the disc and in an annular series thereon adjacent the peripheral edge thereof and arranged concentrically outside of the peripheral range of the local time-indicating dial on the dial plate of the clock, said dial plate and individual plates on said disc having correlated and coindicative indicia displayed thereon indicating the time at various global zones and in coordinated and calculated proportionate time indications in relation to the time indicated on the local time-indicating dial of the clock, and means carried by said individual plates for maintaining the latter against bodily rotation thereof during rotation of said discs, whereby the set position of each of said plates remains the same at all times on said discs.

2. The clock dial construction and arrangement as set forth in claim 1, and iurther describing more specifically that indicia carried by and displayed on said dial plate of the clock as located annularly within a circular undulated outline providing a series of radial points corresponding in number to the number of individual plates on said disc and the correlation of the indicia within said circular pointed outline being in calculated variable correlation to the indicia on said individual plates, whereby, during operation of the clock, the various global time indications are readable on the face of the clock in correspondence with the time indicated on the local time-indicating dial of the clock.

3. The construction and arrangement in a clock for indication of the local time in correspondence with various global times, as set forth in claim 1, and further describing more specifically that the said individual plates carried pivotally on the said disc of the mechanism as comprising circular disclike bodies having axial supporting pins mounted rotatably on said disc and provided with weighted pendulum members fixedly attached to said pins whereby to hold and maintain said individual plates in their respective set positions on said disc constantly during rotation of the disc.

ROE H. RAMSAY.

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