US1403428A

US1403428A - Dial for timepieces

Info

Publication number: US1403428A
Application number: US372485A
Authority: US
Inventors: Jr Henry R Lounsbery
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-04-09
Filing date: 1920-04-09
Publication date: 1922-01-10
Anticipated expiration: 1939-01-10

Description

H. R. LOUNSBERY, JR. DIAL FOR TIMEPIECES.

AiPLiCATiON FILED APR. 9, 1920.

Patented Jan. 10, 1922.

panying drawings, in which HENRY R. LOUNSBERY, JR., OF NEW YORK, N. Y.

DIAL ron 'rIMEPIEoEs.

I Application filed April 9,

To all whom it may concern:

Be it known that I, HENRY R. LoUNsBnRY, Jr., a citizen of the United States, and resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Dials for Timepieces, of which the following is a specification.

The invention relates to certain new and useful improvements in dials for time pieces, such as clocks and watches, and has for its object, to provide a second set of hour indicia on the face of the dial with the adjacent indicia differin from each other by one hour so that the time piece will indicate simultaneously, standard time, and the one hour advanced time under the so-called daylight saving law. Preferably, the corrective or supplemental index bearing member is in the form of an annulus, having the hour indicia printed or otherwise applied thereto, said annulus being adapted to be attached to the face of the dial or timepiece concentric with the latter so that the corresponding hour indicia, in radial alignment with each other, differ from each other by one unit or hour of time.

The invention is illustrated in the accom- Fig. 1 is the front elevation of a watch or clock dial having the corrective hour indicia thereon.

Fig. 2 is a front elevation of the subsidiary or corrective dial.

Fig. 3 is a rear view of the latter.

Referring to the drawings, the numeral 1 indicates the dial of a watch, clock, or similar timepiece provided with the usual and ordinary form of hour indicia represented by the numerals, 1 to 12, arranged in circular series on the face of the dial over which the hour and minute hands of the timepiece sweep. It has been customary in many different parts of the country to advance the timeone hour during the months of extended daylight, so. that when timepieces have been set to agree with the advanced time, they will actually indicate time which is one hour ahead of standard time. It frequently happens that adjacent sections or communities or different concerns in the same community operate under different time schedules, one using standard time While another one is operating under the advanced time, as for example, when the railroads continue to operate under the standard time while a municipalityis working under the daylight Specification of Letters Patent.

Patented Jan. 10, 1922.

1920. Serial No. 372,485.

saving law, it has been found desirable to provide means whereby a single timepiece may indicate both standard and advanced times, without unduly complicating the mechanism of the timepiece.

According to the present invention, the desired object is attained by providing the dial of the timepiece with a second set of hour indicia, preferably arranged concentrically with the normal set of hour indicia, so that the hands of the timepiece will indicate the time of both systems. In the particular embodiment of the invention, the corrective or supplemental indicia are printed or otherwise applied to the face of an annulus 2 of paper, or other suitable material, which is preferably provided with a tab 3, adapted to overlie or be positioned adjacent the noon or midnight hour index on the dial of the timepiece, the hour indicia on the annulus being so disposed that adjacent indicia on the dial and annulus, respectively, differ from each other by one hour. For example, the two, three and four oclock indexes on the annulus are in radial alignment withthe one, two and three oclock indexes on the dial. Preferably, the annulus is provided with a coating of adhesive 4: on the back thereof to enable the same to be secured to the face of the dial 1 without disturbing any of the elements of the timepiece. If desired, however, the corrective indicia may be applied directly to the dial when the latter is manufactured.

It will be inderstood that with a literal reading of the time, as indicated on the face of p the timepiece, by the standard indicia and the corrective indicia, respectively the indication of the advanced time will be five minutes fast. For example, the timepiece illustrated in Fig. 1 indicates the hour as 10:30, while the advanced time indicated is 11:35. Inasmuch as it is the universal custom to read the time of the minute hand by the relative position of the same on the dial, irrespective of the figures or indexes thereon, this five minute discrepancy in the actual time indication will be more or less negligible and will cause no particular inconvenience, inasmuch as the advanced time can be accurately determined by subtracting five minutes from the time actually indicated on the corrective element of the dial, if found necessary. 4

Instead of applying the corrective element to the dial of a Watch or clock, the same may be attached to the crystal of a watch or the glass face of a clock, either on the exterior or interior surface of the glass covering, and when applied to the inside face of the glass,

the adhesive will, of course, be applied to the face of the annulus bearing the corrective indicia.

What I claim is 1. As an article of manufacture, an attachment for the dials of timepieces comprising an annulus cut from a. thin sheet .of flexible material having hour indicia thereon,

said annulus adapted to be immovably applied over the dial with the adjacent indicia on the dial and annulus differing from each other, said annulus being of smaller diameter than the circle formed by the hour indicia on said dial to which said annulus is applied,

secured over the face of said dial with the adjacent indicia on the dial and annulus differing from each other, said annulus being of smaller diameter than the circle formed by the hour indicia on said dial to which said annulus is applied, whereby both the original hour indicia on the dial and the hour indicia'on the annulus will be readable at all times.

3. As an article of manufacture, an attachment for the dials of timepieces comprising an annulus cut from a thin sheet of flexible material having hour indicia printed thereon, an adhesive on one face of said annulus to admit of the latter being immovably secured over the face of said dial, an extension or tab formed on said annulus adjacent the first hour indication thereon adapted to overlie the twelfth hour indication on said dial, for properly positioning said annulus so that'the numbers of each adjacent pair of indicia will differ from each other by one hour, said annulus being of smaller diameter than the circle formed by the hour indicia of said dial to which said annulus is applied, whereby both the original hour indicia on the dial and the hour indicia on the annulus will be readable at all times. v

Signed at New York, in the county of New York, and State of New York, this 5th day of April, A. D. 1920.

HENRY R. LOUNSBERY, JR