US1072554A - Clock-dial. - Google Patents

Description

P. ,E. WINDSOR.

CLOCK DIAL.

APPLICATION FILED 00117, 1911.

RENEWED JAN. 30, 1913.

3 R m m 9 h V m m. m G m M E v P f M Y B 6 A: 5 m E 0, #1 W Afforney g COLUMBIA PLANOGRAPH CO.,\VASHINGTON, u. c.

UNITED STATES PATENT OEETQE.

FREDERICK E. WINDSOR, OF LOS ANGELES, CALIFORNIA.

crook-Dian Application filed October 17, 1911, Serial No. 655,216.

To all whom it may concern.

Be it known that I, FREDERICK E. WINDSOR, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Clock-Dials; and I do hereby cleclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to clock dials and particularly to that class of dials in which the gradations are spaced to accommodate a clock provided with a single hand.

The object of my invention is to provide a clock dial which enables the time of day to be read by the use of only one clock hand thus obviating the mechanism necessary for operating the usual extra hand and also obviating the necessity of observing two hands, in order to read the time. I accomplish this object by means of the device described herein and illustrated in the accompanying drawing.

The drawing illustrates a face view of my improved dial.

Referring to the drawing 1 designates a dial of suitable material on which are printed or otherwise placed, hour numbers 2, which are spaced around the dial in the usual manner. On the outer side of the circular row of characters, designating the hours and located between each pair of same, and within the double circle 3, are numbers 2 which designate the quarter hours, and these may be printed in difierent colors or type from the hour numbers or other characters on the dial.

3 designates a double circle which surrounds the hour numbers 2 and is divided into minute spaces, there being sixty of these spaces between each hour number and the one next adjacent thereto.

Outside of the double circle 8 is a circular space 4: which is divided into twelve equal sections by the lines 5, 5. Each one of these sections are provided with lines of different Specification of Letters Patent.

Patented Sept. 9, 1913.

Renewed January 30, 1913. Serial No. 745,307.

lengths to designate different periods of time. The lines 7 denote five, twenty, thirtyfive and fifty minute periods and are comparatively short, while the lines 8 denoting ten, twenty-five, forty and fifty-five minute periods are longer, as appears on the drawing.

It will be seen from the foregoing that each section of the circular space 4. is divided into eight parts, each of which is designated by divison lines and numbers.

In reading the time from my improved clock dial, the hour is first ascertained at a glance by the proximity of the hand 9 to one or the other of the hour marks. The number of minutes after or before the hour is then ascertained by the coincidence of the hand with one or the other of the minute marks in the double circle 3 and the numher, in the group of quarter hour numbers 2 to which thehand isnearest, and the number in the circular space 4. In each section in the space 1, by having the divison lines of difierent lengths and the numbers designating said lines at different distances from the circle 3, greater accuracy and speed can be had in ascertaining the time than in those devices heretofore used.

"What I claim and desire to secure by Letters Patent is 1. A clock dial, comprising a disk having twelve hour divisions thereon, defined by hour marks and figures of larger size, quarter hour numbers between said hour numbers, a double circle 011 the outside of said hour divisions provided with minute divisions, and an outer ring on the outside of said double circle, said outer ring being provided with division lines of different lengths and having the numbers designating said division lines placed at different distances from said inner circle.

2. A clock dial comprising a disk having a double circle provided with divisions indicating minutes, a circle outside of said double circle forming a ring, hour marks ex tending across said ring and within said double circle, hour numbers of large size opposite the hour marks Within the double figures in tWo rows upon said ring outside circle, marks extending through the double of said double circle. 10 circle indicating the quarters of each hour, In testimony whereof I afliX my signature, such quarters being indicated by figures of a in the presence of tWo Witnesses.

different color also Within said double cir- FRED. E. WINDSOR. cie giving the quarters in minutes, and the Witnesses:

minutes between the quarter marks being WV. A. BALEs,

indicated by marks in groups of five and J HOWARD SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.

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