US301215A - Universal clock - Google Patents

Description

(No Model.)

A. M. CORY.

UNIVERSAL CLOCK.

No. 301,215. Patentd July 1, 1884 I INVfgTOR: J Y I W ATTORNEYS.

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ABRAHAM MORRELL CORY, OF NEW PROVIDENCE, NElV JERSEY.

UNlVERSAL CLOCK.

SIECIFIC ZION forming part of Letters Patent No. 301,215, dated July 1, 1884.,

A pplication filed August 26, 1882. (No model.)

1O vision of such degree with only a single clockmovement.

The invention consists in a universal clock formed of a rotating dial-annulus divided into subdivisions of time, and surrounded by a I 5 fixed ring divided into degrees, whereby the time on each and every meridian will be shown at the same time, and if the correct time on one meridian is given the time at any other meridian can be obtained without calculations by simply observing the hour and minute opposite the desired degree.

The invention further consists in the combination, with the above clock, of a minutehand for indicating minutes and fractions thereof.

The invention also consists in additional disks mounted on shafts in such a manner as to correspond with certain degrees, on which disks the names of places are printed which 0 are on the same degree with which these said disks correspond in position.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate cor- 3 5 responding parts in all the figures.

Figure l is a plan view of a watch provided with my universal time-dial, which is arranged for ninety degrees. Fig. 2 is a plan View of a clock-dial with my improvement arranged for one hundred and eighty degrees; and Figs. 3

' and 4. are modifications in which the dial is stationary, and the longitudinal ring and the disk 13, with subdivisions on it, are movable.

The dial A of the clock consists of a central 5 fixed disk, B, and a rotating annulus, (3, surrounding the disk 13, which annulus G is surrounded by a fixed ring, D. The ring D is provided with two concentric circles or double-circular lines, E and F, whichare divided into sections of fifteen degrees, each section being subdivided into groups of degrees,

into single degrees, or into fractions of degrees, as may be desired. In the case shown the rings are divided into divisions a of fifteen degrees each, and these sections are divided into single degrees. The subdivisions of the outer circle Eare marked with numerals from left to right, and the subdivisions of the circle F are marked with numerals from right to left, the zeros of the two rings correspondin The rotary annulus G is divided into twelve equal parts, each part representing one hour, and each one may be divided into sixty minutes, and, if desired, into fractions of minutes. The fixed central disk, D, has its periphery divided into four equal parts, each representing one minute, and each one divided into sixty seconds or into fractions of seconds. The annulus O is connected with theclock-work below the dial in such a manner that this ring rotates once in twelve hours, and a second hand, G, is connected with the central arbor of the clock-work in such a manner that it rotates once in four minutes. The initials of cities east of Greenwich are written, printed, or otherwise produced on the ring D adjoining to the graduated circle E, and the names of cities west from Greenwich are arranged adjoining the graduated circle F of the ring D. In the case shown the initials of the'names of cities east of Greenwich are arranged around the inner edge of the circle E, and the names of the cities west of Greenwich are arranged around the circle F; and, if desired, the names of the cities west of Greenwich can be written, printed, or otherwise produced adjoining to the inner circle, F, hereinafter more fully described.

A hand, H, may be mounted on an arbor of the works above the central disk, B, in such a manner that it will revolve once in twentyfour hours. To this hand a semicircle, J, of card-board or other suitable material, is attached, and the disk B is provided with a circle, K, consisting of two semicircles, each divided into one hundred and eighty degrees.

As shown, the clock indicates twelve o clock at London or Greenwich. If the time in New York is desired, the initials of New York are found on the ring D, and that timc-mark on the ring 0 which registers with the mark denoting the longitude of New York denotes the time at New York, and it will be seen that it is seven ocloek or a few minutes past seven at New York. In St. Johns the time will be found to be 8.86, in Halifax 7A8, and so on. As these cities are west from Greenwich, their time will be so much slower than that of London. If the time of Berlin (expressed in the drawings by Bn on the ring E to the right of the zero) is desired, it will be found to be about 12.48. At Teheran, in Persia, (expressed in the drawings by T n on the ring 13,) when it is twelve oeloek in London, it will be 3.24, and so on. The time of any city on the globe may be found, provided the longitude of the city is known. It may frequently happen that so many cities are on the same meridian that all of their names cannot be printed on the ring D. For that reason I have provided a series of disks, N, mounted on suitable shafts in such a manner that each disk will correspond with a degree on the divisions of the circles E and F. The names of a number of cities can be printed, stamped, or otherwise produced on the edges of these disks N, all the names printed on the same disk having the same longitude. The disk can easily be turned until the desired name appears uppermost.

It may happen that the time and longitude marks on the annulus (J and ring D may not register when the time orlongitude is required in a given place. In such event the angle of their separation is indicated by the fractional numbers on the disk D, a complete rotation being effected during the interval elapsing between the registering of the marks on therings O and D, the fractional time or longitude for any given place when the marks do not register being indicated by the numbers on the disk 3, pointed out by the hand G, or by the rotation of the disk 13.

If desired, the subdivisions of the annulus 0 may be made equal to ten minutes, and one rotation of the hand G or a rotation of the disk 13 equal to ten minutes; butsuehmodifications do not affect the invention, as in all cases the time required by the hand G to make one revolution should be equal to the unit on the annulus C. An inner circle, F, of divisions of longitude is provided on the inner circumferenee of the ring 1), corresponding with the cireles of longitude IE and F, the purpose of which is to facilitate the finding of the time-mark on the annulus 0 corresponding with the longitude-mark of the place for which the time is sought. he hand II always points to the meridian upon which the sun is, or to the degree of longitude where it is midday, and the semidisk J is turned toward the dark or shaded half of the earth.

In place of dividing the rotating annulus (3 into twelve hours and having it rotate once in twelve hours, it may be divided into twenty-four hours and rotate once in twentyfour hours. In that case only one ring, E or F, will be required, and that must be divided into three hundred and sixty degrees.

In Fig. 1 the ring D is divided into ninety spaces of four degrees each, representing degrees of longitude, and as here shown indicates by its divisions the time for all points on any given quadrant of the globe. An other ring, representing another quadrant, may be substituted for the ring D, said ring having other numbers and other localities, or designating characters upon it for any other quadrant of the earth. For instance, in Fi 1 the time is shown at points between St. Johns and New Archangel. A ring substituted for this might show the time for all. places in a quadrant of ninety degrees, beginning at any meridian of longitude and at a different latitude.

In Fig. l I have divided the annular dial 0 into six hour spaces only. I must have two numerals at each division to make up the number 12. Thus opposite the several divisions successively are marked 11. 7, 2 t5, 3 9, i 10, 5 11, 6 12. If the dial-ring Gshould be divided into four spaces only, there would have to be three numerals at each division ,d e. other wise the clock or watch shown in Fig. 1 operates in the same manner as the clock shown in Fig. 2.

I have described these numerous modifications and changes of my invention to show that the principle of the same is not changed.

In all cases I have a ring divided into degrees.

Further, I have a rotating annulus divided into hours,and I have a minute-hand for indicating minutes and fractions of minutes. The modi' fieations only affect the construction, and the details of these changes depend, chiefly, upon the size of the clock. For instance, in alarge permanent clock in an observatory, I would divide the outer circles, It and F, into three hundred and sixty degrees, and would divide the dial-annulus G into twenty-four hours, and I would also provide the disks N. For a watch I would not make the dial any larger than that shown in Fig. 1, and would leave off all parts that could be omitted without al fecting the working of the same.

' The above-described mechanisms may be combined with a clock which indicates the standard time at the place at which the clock is located.

Without departing from the idea of my invention the time subdivisions may be arranged on the outer or stationary ring, and the me ridian subdivisions on the revolving disks.

Having thus described my invention, I claim as new and desire to secure by Letters Iatentl. The combination, with a revolving dial provided with divisions of time, of a longitude-ring concentric with said dial, and divided into degrees or fractions of degrees, substantially as described, whereby it the time and longitude on one meridian are known the times and longitudes at all. other meridians will also be indicated, as set forth.

2. In a universal clock, the combination, with a revolving annular dial, of a fixed. ring ICO concentric with it and divided into degrees, and of a revolving minute-hand, substantially as herein shown and described, and for the purpose set forth.

3. In auniversal clock, the combination, with the rotating annular dial 0, of the ring D, concentric with it and divided into degrees,

.of the hand G, and of the central disk, B,within the ring G, substantially as herein shown and described, and for the purpose set forth.

4. In a universal clock, the combination, with the annular dial 0, divided into hours and minutes, of the ring D, surrounding it and divided into degrees, the hand G, and the hand I-I, provided with a semi-disk, J, substantially as herein shown and described, and for the purpose set forth.

5. In a universal clock, the combination, with the revolving annular dial 0, divided into hours and minutes, of the fixed ring D,

divided into degrees, and a series of disks, N,

mounted outside of the ring D, which correspond with the subdivisions of the same for the names of towns or places printed or otherwise produced on the edges, which towns or places are located on the meridian with which the disk corresponds, substantially as herein shown and described, and for the purpose set forth.

6. The combination, with a revolving dial provided with divisions of time, and a longitude-ring concentric with said dial, and divided into degrees or fractions of degrees, of two or more hour-indicating numerals arranged on each hour-division on the dial, substantially. as described, and for the purpose set forth.

ABRAHAM MORRELL CORY.

\Vitnesses:

OSCAR F. GUNZ, G. SEDGwIcK.

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