US809605A - Computing device. - Google Patents

Description

PATENTBD JAN. 9, 1906.

G. M. BROWN:

GGMPUTING DEVICE.

APPLICATION rum) JULY 27, 1905.

2 SHEBTSSHEET 1.

131' Human No. 809,605. PATENTBD JAN. 9, 1906- G. M. BROWN.

COMPUTING DEVICE.

APPLICATION FILED JULY 27, 1905.

2 SHEBTSSHEET 2.

nuewtoz o G.MB7'0WIL 9 wanes GEORGE M. BROWN, OF OTTO, NEW YORK.

COMPUTING DEVICE.

Specification of Letters Patent.

Patented Jan. 9, 1906.

Application filed y 27,1905. Serial No. 271,501.

To all whom, it may concern:

Be it known that I, GEORGE M. BROWN, a citizen of the United States, residing at Otto, in the county of Cattaraugus and State of New York, have invented certain new and useful Improvements in Computing Devices, of which the following is a specification.

This invention relates to an improved device for rapidly determining the value of a certain line of goods at a given price without mathematical calculation, and has for its object to produce a device of this character which will have a very large range both in respect to the prices and quantities, which will be very compact in structure, and which will be so simple as to render mistakes impossible.

To these ends the invention consists, essentially, of a table divided into a number of divisions designated by the even hundreds, said divisions being subdivided and numbered soas to give the value of the intermediate numbers between the even hundreds and also of those numbers plus one thousand.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and accompanying drawings, in which Figure 1 is a perspective view of a device embodying my invention. Fig. 2 is an enlarged view, parts being broken away, showing the arrangement of the table. Fig. 3 is a plan view showing a modification of the device.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

In the preferred form the table is arranged upon a cylinder 1, which rotates upon a shaft 2 and is inclosed within a casing 3, provided with an opening 4, which may be closed with glass, if desirable. The scale itself is divided into ten divisions 5, which are designated, respectively, by the numerals 1-000, 1 1-100, 12()O, L300, 1-400, 1 500, 1600, 1400, 1800, e900. These divisions 5 are subdivided into a number of vertical or longitudinal columns 6, which are headed by the various prices. As

shown in the drawings, there are twenty of the columns 6, and the prices range from sixty-five cents to one dollar and sixty-five cents. However, any desired number of columns may be employed, according to the range of price desired. A rod 7 is employed in connection with the cylinder and is at tached to the casing 3 so that it is parallel with the columns 6. This rod 7 is divided into one hundred transverse divisions 8, which are numbered from 0 at the top to 99 at the bottom. The columns 6 are also subdivided into one hundred parts 9, correspond,- ing to the divisions 8 on the rod 7. Each of these spaces 9 is provided with two numbers, the upper one of which designates the value of the goods in quantities between the hundreds, while the lower one designates the value of the same quantity of goods plus one thousand units of the goods. As illustrated in the drawings, the prices given are for one hundred pounds, and in the division 5, designated by 1O0O, the row of figures which pass beneath the 0 mark on the rod 7 when the cylinder is rotated give the price of one thousand pounds, according to the price per hundred at the top of the columns 6. The spaces 9 in the second horizontal row, or those which pass beneath the space marked by the numeral 1 upon the rod 7, are each provided with two numbers. The upper number designates the price of one pound according to the price per hundred pounds at the top of the column, while the lower numeral designates the price of one thousand pounds plus the one pound, or one thousand and one pounds. In a similar manner the spaces in the third horizontal row, or those which pass beneath the space marked by the numeral 2 on the rod 7 are also each provided with two members, the upper one designating the price of two pounds and the lower one the price of one thousand and two pounds, according to the price per hundred at the head of the column 6, in which the numbers are located. The other divisions 5 are subdivided and marked in a similar manner. For instance, in the divisions 5, designated by 11500 the upper numerals in the first horizontal row which passes beneath the space marked 0 upon the rod 7 designate the price of five hundred pounds at the price per hundred given at the head of the column, while the other figure gives the price of fifteen hundred pounds. The other numerals in the respective spaces are arranged in a similar manner. Should it be desired to find the value of five hundred and thirteen pounds at one dollar and five cents per hundred, the cylinder 1 is turned until the column headed by $1.05 in the division marked 1-500 is adjacent the edge of the rod 7. The upper numeral in the space 9 opposite the space on the rod 7, designated by the numeral 13, gives the desired value, which is five dollars and thirty-nine cents. The numeral directly below this gives the price of fifteen hundred and thirteen pounds at one dollar and five cents per hundred, which is fifteen dollars and eighty-nine cents. In a similar manner the value of any quantity from one pound to two thousand pounds can be readily determined where the prices range between sixty-five cents and one dollar and sixty-five cents per hundred.

A modification is shown in which the tables are placed upon a board 10 instead of upon a cylinder, and this board is preferably placed in a horizontal position. In this iiistance two rods 11 are employed, which are subdivided and numbered similar to the rod 7 and which slide over the board in guideways 12. The two rods 11 are employed to allow any portion of the scale'or table to be reached by moving the slide a shorter distance than would be necessary if a single red were employed. The operation of this form is identical with that of the preferred form, except that the rods 1] are moved instead of the scale. Owingto the fact that each of the subdivisions 9 contains two numbers which are employed, as has been heretofore described, the device has twice the range of the usual computing-table of the same size and can be manipulated very rapidly and accurately.

Having thus described the invention, what is claimed as new is 1 A computing device of the character described which is divided into a number of main divisions designated by the hundreds, each of said main divisions being divided into a number of columns for the different prices, and each of the columns being subdivided into one hundred spaces, each of which contains two figures, one of them giving the value of the quantity of goods designated by the number of hundreds marked upon the main division plus the quantity designated by the position of the space in the column, said value being according to the price value of the column, while the opposite figure gives the value of that quantity of goods plus one thousand units of the goods.

2. The combination of a computing device of the character described which is divided into a number of main divisions designated by the hundreds, each of sa d main divisions being divided into a number of columns for the different prices, and each of the columns being subdivided into one hundred spaces, each of which contains two figures, one of them giving the value of the quantity of goods designated by the number of hundreds marked upon the main division plus the quantity designated by the position of the space in the column, said value being according to the price value of the column, while the opposite figure gives the value of that quantity of goods plus one thousand units of the goods, and a rod located over the table and parallel with the price-columns, said rod being divided into one hundred transverse divisions corresponding to the one hundred spaces in the price-columns and numbered from O to 99, said numerals designating the number of units to be added to the number of hundreds marked upon the main division in determining the quantity of goods, the device being made so that the rod canbe brought to any desired portion of the table.

3. The combination of a cylinder having a table of the character described on the surface thereof, said table being divided into a number of main divisions running longitudinally of the cylinder, each of the main divisions being divided into a number of columns for the different prices, and each of the col umns being subdivided into one hundred spaces, each of which contains two figures, one of them giving the value of the quantity of goods designated by the number of hundreds marked upon the main division plus the quantity designated by the position of the space in the column, said value being according to the price value of the column, while the opposite figure gives the value of that quantity of goods plus one thousand units of the goods, and a fixed rod located adjacent the cylinder and parallel with. the price-columns, said rod being divided into one hundred transverse divisions corresponding to the one hundred spaces in the pricecolumns and numbered from 0 to 99, said numerals designating the number of units to be added to the number of hundreds marked upon the main division in determining the quantity of goods, the cylinder being ad apted to rotate so as to bring any desired portion of the table around to the rod.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE M. BROWVN.

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