US471120A - Buckingham st - Google Patents

Description

(No Model.)

BQST. -J. HOYT. PERPETUAL MONTHLY CALENDAR.

No. 471,120. Patented Mar. 22,%89Z.

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BUCKINGHAM ST. JOHN HOYT, OF NElV YORK, N. Y.

PERPETUAL MONTHLY CAL E N DAR.

SPECIFICATION forming part of Letters Patent No. 471,120, dated March 22, 1892.

Application flledMity 29,1891. Serial No. 394,458. (No model.)

To all whom it may concern.-

Be it known that I, BUGKINGHAM ST. JOHN HOYT, of the city and county of New York, in the State of New York, have invented a new and useful Improvement in Perpetual Monthly Calendars, of which the following is a specification.

My invention relates to an improvement in perpetual monthly calendars in which provision is made for constructing the parts in a durable and ornamental manner, so that the calendar may be utilized for a long term of years without any exchange of parts and may be used until worn out by simply an exchange of the year-wheel every twenty years, more or less.

A practical embodiment of my invention is represented in the accompanying drawings, in which Figure 1 is a View of the calendar in front elevation. Fig. 2 is a vertical transverse section through line 00 ac of Fig. 1. Fig. 3 is a view in front elevation, partly in section, a portion of the case being broken away to show the operative parts therein. Fig. 4 is a View in rear' elevation, and Fig. 5 is aview in transverse section through line y y of Fig. 1.

The front of the casing is represented by A and the rear by B. In the form in which I have here shown it the casing is rectangular in shape, the front and back of the casing being separated from each other a short distance, in order to admit of the insertion between them of the movable parts. The front and back are united at their edges and are intended to be formed of some suitable sheet or plate metal-such, for example, as silver, either solid or plated; but they may be formed of celluloid, paper, or any other suitable material.

The central portion of the front A of the casing is subdivided into four columns of seven sections each and numbered from 1 to 28, inclusive, beginning with the top of the left-hand column and ending with the bottom of the right-hand column. This is for the purpose of representing the least number of days contained in any one month,and-when read horizontally will denote the days during the month corresponding to each of the seven days of the week. These several columns are denoted by do, &c. To the right of the column a there is an opening 0, formed in the front of the casing and extending down a distance of three numbers. Located in sliding adjustment in back of the front plate A is a strip a subdivided upon its face, as shown in Fig. 3, to correspond with the subdivisions of the columns to the left and bearing upon its face the numbers 29, 30, 31, 29, 30, blank, 29, blank, blank from the top downwardly in the order named. If the strip a be slid so as to bring the upper number 29 at the top of the column, there will then be exposed through the opening 0 the numbers 29, 30, 31,following in order after the number 28 at the bottom of the column a and indicating on the face of the calendar thirty-one days, the number of days contained in certain of the months. By sliding the strip a upwardly until the number 29, which follows the number 31, reaches a position at the top of the column, there will then be exposed through the opening 0 the numbers 29,30, blank, to indicate the number of days contained in certain other of the months. Again, if the said strip a be slid upwardly until the number 29, next below blank, is in position at the top of the opening of the column,there will then be exposed through the openingO the number 29,blank, blank, to indicate the number of days in the month of February when the same occurs in aleap-year. To the left of the column a, there is an opening C,-extending the length of the columns and of sufficient width to expose the names of the days of the week. 7 A sliding strip 0 is located behind the plate B, so as to cover the opening 0, and the said sliding strip has printed upon its face, beginning from the top, extending in order downwardly, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, the said names being spaced apart to correspond with the distances between the successive numbers 1, 2, 3, 4, &c., denoting the days of the month. The sliding movement of the strips 0 is such that any day of the week may be placed opposite any one of the seven numbers in the column a to denote the day on which the first of each month occurs.

A rotary disk D is pivotally secured between the front and back plates, and is provided along its face near its periphery with the names of the twelve months, an opening 0' in the front plate above the columns Ct, a, &c., being provided, so that the name of any one of the months may be exposed through the opening by rotating the said disk D.

To indicate the year, there is an opening 0 provided below the columns a a, &c., through the front plate A, and there is located between the front and back plates a rotary disk (I, carrying upon its face near its margin the numbers denoting the years from 1891 up to 1910, the arrangement being such that by rotating the disk dany oneof the numbers may be exposed through the opening 0 in the front plate. The guides in which the strips a and c slide may be formed by swaging or bending in the metal of the front plate, as shown at a (see Fig. 5,) and then turning the inner edges of the inwardly-set metal toward each other. This forms a bearing to prevent the lateral and rearward displacement of the strips throughout the length of the openings through the plate, while the extension of the strips above and below the openings behind the front plate A holds them against forward displacement.

I have shown in the present instance as a convenient means for operating the strips pins or studs E,projecting from the strips to which they are secured through slots 1), formed in the back plate B. I have also provided a finger-piece d in connection with the spindle of the disk D for rotating it from the back of the back plate 13. This, however, is not essential, as both the disk D and the disk cl may be conveniently rotated by insertingthe finger or a pointed instrument through the curved slots (1 (Z formed in the back plate, into contact with the disks. It is also obvious that the strips 0 and a" might be manipulated by pressure through the openings 0 C; but such manipulation would have a tendency to deface them if often repeated, and for this reason it is desirable that the operating studs or pins E be employed. I

The calendar, as shown in Fig. 1, is set for the month of May, 1891. To set it for the month of June, 1891, the disks D would be turned to bring the name June before the opening 0', the strip 0 would be slid downwardly until the word Monday fell in the horizontal line opposite the figures l, S, &c., and the strip a would be elevated until the numbers 29, 30, and blank appeared in front of the opening C. From the above it will appear that the calendar as thus construeted may be made, if so desired, of precious metals, and be utilized as an ornament,

as well as a means of information, through the long series of years.

\Nhat I claim is- 1. The herein-described perpetual monthly calendar, comprising a front plate presenting a series of numbers common to all the months,

the said plate being provided with openings through the front plate at the right and left of said series, movable strips located in-position to expose through said openings the days of the week and the numbers of the additional days of the month, and means for indicating the month, substantially as set forth.

2. The herein-described perpetual monthly calendar, comprising a front plate provided with series of numbers denoting the number of days common to all the months, the said plate being further provided with openings at the right and left of said series, movable strips located in position to expose the days of the week and the numbers denoting the additional days of the month through said openings, a movable piece bearing the names of the months, and means for presenting them at pleasure in position to be seen through an opening in the front plate, substantially as set forth.

3. The herein-described perpetual monthly calendar, comprising the front plate having series of numbers thereon denoting the numo ber of days common to all the months and having openings therethrough for exposing the numbers of the additional days, the names of the days of the week, the month, and the year, movable strips located behind the front 5 plate and bearing thereon, numbers denoting the additional days of the month and the days of the week, a rotary disk provided with names of the months, and a rotary disk provided with the numbers denoting the years,

substantially as set forth.

4. The combination, with the plate provided with openings and having inwardly-turned guides along the edges of the openings, of the movable strips held against lateral and rear-

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