US337533A - Time-calculator - Google Patents

Description

(No Model.)

S. S. STREOK. TIM'E GALGULATOR.

No. 337,533. Patented Mar. 9, 1886.

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SULLIVAN S. STRECK, OF NEW ORLEANS, LOUISIANA.

TiME-CALCULATOR.

SPECIFICATION forming part of Letters Patent No. 337,533, dated March 9, 1886.

Application filed November 23, 1885. Serial No. 183.7%. (No model.)

T 0 (ZZZ whom it may concern.-

Be it known that I, SrLLIvAN S STREOK, of New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and useful Improvement in Time-Calculators, of which the following is a specification, reference being had to the annexed drawings, forming part thereof, in which- Figure l is a face view of my improved time-calculator. Fig. 2 is a central transverse section; and Fig. 3 is a view of part of the instrument, illustrating the manner of using the same.

Similar letters of reference indicate corresponding parts in the different figures.

The object of my invention is to provide a simple, inexpensive, and easily-operated device for calculating the time from any part of the twenty-four hours to any other part.

My invention is especially designed for the use of time-keepers or foremen in manufac turing establishments, to enable them to readily calculate the amount of time consumed by any workman upon any job.

My invention consists in a graduated circle formed on a suitable surface and in a graduated disk arranged to revolve in front of the circle, the graduated circle being provided with two sets of graduations running from one to twelve, and the movable graduated disk having one set of graduations running from one to twenty-four.

The plate A, forming the body of the instrument, has a circle, B, which is divided into twenty-four equal parts, representing the twenty-four hours of the day, and each of the larger divisions is subdivided into half and quarter hours and into smaller divisions of five minutes. The circle B is divided into halves a o, and the larger divisions of each half are numbered from one to twelve, representing the twelve hours of the day and night divisions of the day. Opposite the twelvemark upon one side of the plate A is placed an arrow, 1), indicating the starting-point.

To the plate A is pivoted a disk, 0, co axially with the circle B, and the edge of the disk 0 is divided into twenty-four large divisions, representing hours, and each large division is subdivided into halves and quarters, and into spaces representing five minutes of time. The larger graduations of the disk 0 are numbered reversely from one to twenty-- four, and opposite the graduation marked twenty-four is placed an index, I). When the index I) of the disk 0 is opposite the arrow 2) upon the plate A, the calculator is in condition for use.

By moving the disk 0 forward in the direction indicated by the arrow until the indeX Z) arrives at the hour or subdivision thereof on the upper half, a, of the scale B at which the workman finished his work, then by following the graduated circle B backward to the hour at which the workman began his work, and observing the figure or graduation on the disk 0 oppositethe mark representing the hour of beginning work, the mark or the graduation thus indicated on the disk 0 will represent the number of hours occupied by the workman.

Fig. 3 shows an examplein which the workman stopped work at half-past one. The intier; 1) is therefore moved to a point opposite the mark representing half-past one upon the upper half, a, ofthe circle B. He began work at half-past eleven. N ow, by following the graduations of the upper half, a, of the scale B backward past the figure twelve to the mark representing half-past eleven, it will be observed that the mark on the disk 0 opposite the half-past-eleven mark on the circle B is numbered two, thus indicating that the workman was employed two hours.

By the employment of my improved calculator, the time-keeper or the foreman of a shop will be able to readily make the calculations required to show the number of hours and minutes the workman was engaged, and not only will he be able to save all the time required to make such calculations, but he will arrive at perfectly accurate results.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The plate A, having formed thereon a graduated circle, B, divided into hours and subdivisions thereof, each half of the circle being numbered from one to twelve, and in combination therewith of a disk, 0, divided into twenty-four parts representing hours, each part being subdivided, substantially as herein shown and described.

2. In a time-calculator, thegraduated circle B, divided into twenty-four equal divisions representing the hours of the day, the divisions of each half of the circle being numbered from one to twelve, and subdivided as de- 5 scribed, and provided with the index 5, and the disk 0, pivoted co-axially with the circle B, and provided with twenty-four equal graduations around the edge thereof, said graduations being numbered from one to twentyfour successively and subdivided, and the in- [0 dex b, formed on the disk 0, combined and arranged as herein specified.

SULLIVAN S. STREGK. Witnessesi M. HERNANDEZ, EMILE C. J EUNESSE.

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