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Publication numberUS903964 A
Publication typeGrant
Publication dateNov 17, 1908
Filing dateNov 27, 1907
Priority dateNov 27, 1907
Publication numberUS 903964 A, US 903964A, US-A-903964, US903964 A, US903964A
InventorsLouis Buck Ferguson
Original AssigneeLouis Buck Ferguson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 903964 A
Abstract  available in
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Description  (OCR text may contain errors)



Patented Nov. 1?, 1908.

191 8 fiff an vey.



No. eoaeee;

Specifieation. of Letters Patent.

Patented Nov. 17, 1908.

Application filed November 27, 1907. Serial No. 404,177.

To all whom it may conccm:

Be it known that l, Lotus Boon FaustsoN, a citizen of the United States of America,- residing at Monroe, in the parish of (luachita and State oiLouisiana, have invented certain new and useful. Improvemerits in- Dials,- of Which the following is a specification.

. This invention relates to dials for time pieces oi? every description, but has special reference to Watch dials for railroad em ployees, the object oi the invention being to provide a dial from which the exact time be noted at a glance, Without liability of error. Among railroad men, especially, it is the custom to state the time in exact minutes Without mentioning the hour, which is generally known, and understood, and in order to avoid the more or less rapid mental calculation which is required by the use of dials now in general use, have devised the dial shown in the accompanying drawings and the invention consists in certain novel features of the same as will be hereinafter first fully described and then particularly pointed out in the appended claims.

In the drawings, Figure 1, is a plan view of a dial embodying the invention; Fi 2, is a similar view showing the invention applied to a dial, Which is arranged for the twenty-four hour system; and Fig. 3, is a similar View showing the invention applied to a dial employing a center second-hand, or a split-secondhand instead of the smaller second-hand which is usually located near the bottom of dial, as shown in Figs. 1 and 2.

Referrin to the drawings by letter, it will be noticed that I provide on the dials an inner circle it within which are consecutive numerals B denoting the hours, the hour-hand C being just long enough to travel over the circle described by said hour numerals, which are placed in juxtaposition to div sion marks D arranged at regular intervals. Adjacent to and concentric with the edge of the dial are sixty division marks E arranged at regular intervals to mark the minutes, large distinctly defined numerals l being placed adjacent to each fii'th mark denoting the minutes prominently by 5, 10, 15, 20, 25, 30, 35, 40, 4.5, 50, 55, 60, and on the outer side of the division marks, between them and the edge of the dial are smaller marginal numerals G arranged in series of single numbers, 0, 1,52 3, 4, 5, 6, 7, S, 9, placed adjacent to each of the sixty minute division marks for closer observance When required, the minute hand "H being decidedly'heavier, longer and more prominent than the hour hand, and of sufiicient length to reach to and travel over the circle described by said division marks, and minute figures. In the form of dial shown in Fig. 1, and F ig. 2, the seconds are marked in the usual position near the bottom part of the dial, and it will be particularly noted that the numeral 30 indicates both the seconds and the minutes, overcoming the omission which usually occurs-at this point on dials with the second-hand in this position on account of having no room for the figure G denoting hours and the figure 30 denoting seconds.

In the form of dial shown in Fig. 3, the separate'smaller dial for secondsis omitted and the second-hand travels from the central pivot in the same circle described by the minute-hand, and the same numerals answer for both, marks being subdivided into fifths. Referring further to the drawings, it will be noticed that I have definitely separated the minutes from the hours by using separate sets of figures, and i'hat those figures denoting minutes are made very much more prominent than those denoting the hours, and that the minute-hand is made very much more prominent than the hour-hand, the prominence being attained by making the minute figures decidedly larger than the hour figures, and the minute-hand decidedly heavier than the hour-hand, and also by making the minute figures and n1inutchand oi? .a'color Which'will contrast more sharply with the field or face of the dial than the color employed for the hour figures and the hourhand, preferably black for minutes, and red for hours, although any other contrasting colors could be used if desired. From the arrangementdescribed, the exact time in minutes will be ascertained at a mere glance without the necessity of any mental calculations such as is generally required by dials previously used whereby the minutes have to be first separated from the hours and then multiplied or added before determined, for instance, the drawings show the time as 2:47 which is determined at the first glance, whereas with the ordinary dial now in general use, it would first have to be noted that the. hour hand had not quite reached 3 and then noted that the minute hand had passed 9, whereupon the ubsclYcl' would count the spaces beyond 9 to the minute hand and necessarily perform the mental calculation 9X 5:5-|2:47, before the exact time could be ascertained.

I consider the advantages to be derived from the use of my ready reference dial, of vital importance to railway employees connected with train service as it relieves them of the uncertainty of accurate calculations, and enables them to pay more attention to other important duties. It will also be advantageous to the general public, for clocks and watches.

In Fig. 1, this invention is shown applied to the watches more generally used, which require twelve revolutions of the minuteahand .to make one complete revolution of the hour-hand, known as the twelve hour system, practically no change in said watches being necessary in order to apply my improved dial, only the dial itslf and the hands would have to be substituted.

, In Fig. 2, this invention'is shown applied to a watch requiring twenty-four revolutions of the minute-hand to make one complete revolution of the hour-hand, suitable for the twenty-four hour system, a minor change in the gearing propelling the hour- In Fi 3, this invention is shown applied to watches and clocks having no separate smaller dial for the seconds, or having the .respaced and made to read from 1 to 31 inclusive. p

The three drawings, Figs. 1, 2 and 3, show only a few of the numerous modifications of this invention, which is susceptible to vari ous changes and combinations, in order to make it suitable for all kinds of time-pieces,

but are considered sufilcient to show the general ideas which cover a very large scope.

Having thus described my invention, what I claim and desire to secure by Letters Patent is v 1. A dial for time-pieces having a circle of division-marks indicating minutes, distinctly prominent minute-counting numerals adjacent some of said marks, and an independent concentric circle containing hourdesignat ions which are faint as compared with the minute-counting numerals.

2. A dial for time-pieces having a comparatively faint circle of hour-designations, an outer independent concentric circle of minute marks, large prominent numbers arranged within said circle opposite some of said marks, and series of small figures out side said circle and opposite the minute marks, each of said series of small figures counting numerically from 0 to 9.

In testimony whereof I aifix my signature in presence of two witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5422864 *Mar 15, 1991Jun 6, 1995James LorelloMinute clocks
US5642335 *Sep 18, 1995Jun 24, 1997Taylor; Raymond R.Clock
Cooperative ClassificationG04B19/06