Патент USA US2078345код для вставки
April 27, 1937-. T. L. ROBERTSON 2,078,345‘ UNIVERSAL TIME INDICATING CLOCK Filed April 24, 1936 2 Sheets-Sheet 1 /. O Invento'r By ‘g I Mm WAttomey; April 27, 1937. T. |_. ROBERTSON 2,078,345 . UNIVERSAL TIME INDICATING CLOCK Filed April 24, 1936 6 2 Sheets-Sheet 2 6 r. ' _ Inventor 3016/7550” Patented Apr.- ‘27, 1937 UNITED STATES PATENT OFFICE . 2.0mm umvsassr. TIME mnrosma CLOCK ‘ Thomas L. Robertson. Longview, Wash. Application April 24, 1988, Boris! No. ‘10,275 1 Claim. (01. ss-u) pane l3 and the glass pane II is held in place improvements in the general art-of horology and against the inturned ilange ll of the rim 8 by This invention appertainstojnew and useful more particularly to a novel world time indicating clock mechanism. . a The principal object of the present’ invention is to provide a clock mechanism including a ro- tary dial having indicia thereon representing time intervals, and a stationary dial carrying geographical names mounted in proximity to the 10 rotary dial. Another important object of the invention is to provide a simply constructed world time telling clock structure which will be of ‘considerable assistance to persons having long range short 15 wave radio receivers. ‘ - the spring members I I. The rim I does not have any motion except that it can be rotated until the geographical 5 location on dial I corresponding to the place with its respective degrees of longitude in the 15 Other important objects and advantages oi’ the invention will become apparent to the reader same manner in which degrees of longitude are marked on a world map. Each portion of the of the following speci?cation. In the drawings:— dial 8 is further divided by a line of half hour marks. Running laterally and continuously 20 Figure 1 represents a front elevational view _ around the center of this dial is a mark or line 20 of the mechanism. which is lettered “Equator". Around this rim Figure 2 is a fragmentary side elevational view with the main portion of the structure in ver- 8 and close to the degree or divisional line which marks the time zones are placed the names of tical section. various countries of the world. ' ' ' 25 Referring to the drawings wherein like numerals designate like parts, it can be seen that numeral 5 represents the clock back and which on its front side has a plurality of small clips 0 secured thereto for engaging against the roll 30 ‘I on the inner edge portion of the annular rim I. This rim is rotatable in the clips 8 to permit adjustment of the annular dial 9 with respect to the rotary dial Ill. The dial II is situated in conjunction with the pointer ii and 35 has the gear train i2 driving the same. The dial l0 rotates in a clock-wise direction at a speed of one revolution in twenty-four hours, the same being carried by the gear mechanism If.‘ The dial in is marked by having a 40 line drawn diametrically therethrough the one end portion of which is marked “Midnight” while the other end portion is marked “Noon”. Each half of the dial is divided into twelve equal parts which represent the hours from one to twelve 45 A. M. and one to twelve P. M. and are so marked in a, counter-clock-wise manner. Each hour is then calibrated into ?ve minute periods and the ?fteen, thirty and forty-?ve minute periods are so marked. The shaded portion of the dial iii ' 60 from six P. M, to midnight and from midnight to six A. M. is so colored to represent the dark part of the twenty-four hour period. The annular dial 9 is secured against the glass ' where the clock is located coincides with the hour (indicated on dial it) representing local time at the place where the clock is situated. This rim 8 has its dial ! marked as follows: 10 The same is divided into twenty-four equal portions, each portion representing ?fteen de grees of longitude for one hour of time, each division line being numbered on its outside end These names are placed on the inside of the Equator line if 25 they are located above the Equator and on the outside of the Equator line if they are located below the Equator. Names of countries on the half hour standard are placed near the half hour mark. The Greenwich Meridian and the date 30 line are also shown in their respective places. While the foregoing speci?cation sets forth the invention in speci?c terms, it is to be under stood that numerous changes in the shape, size and material may be resorted to without de- 35 parting from the spirit and scope of the inven tion as claimed hereinafter.~ Having described the invention what is claimed is: A clock structure comprising a back, guides 40 carried by the back, an annulus having its inner edge rotatably supported by said guides, a clock mechanism mounted on the back within the con ?nes of the annulus, a rotary dial carried by the clock mechanism and having indicis thereon 45 representing time intervals, and a second dial of annular construction secured to the outer edge of the annulus, said second dial having its in ner edge terminating at approximately the pe riphery of the rotary dial and having indicia 50 thereon indicating different geographical places. THOMAS L. ROBERTSON.