US189979A - Improvement in arithmetical toys - Google Patents

Description

L. WIESER.

- ARITHMETICAL TOY. No. 189,979 Patented April 24;,- I877.

yellow. blue. Hack wfii/e. red yellow. J/ue. Hack whiz.

MPETERS, PHOTQIJTHOGkAPHER, WASHINGTON. D, G.

it. NITED i'il n'rnlv'r on IMPROVEMENT IN ARITHMETICAL TOYS.

Specification forming part of Letters Patent No. l 89.979, dated April 24, 1877; application filed February 10, 1877.

My To all whom it may concern:

1 Be it known that I, LoUIs WIESER, of Washington, in the District of Columbia, have invented a new and useful Arithmetical Toy, of which the following is a specification:

This invention has for its object the am usement and instruction of children by familiariziug them with numbers and their combinations.

In the annexed drawings, making part of this specification, A is the base, on which is a wire frame, B, perforated at regular intervals to receive the parallel wires (J, placed horizontally. On these wires a series of little disks are hung by means of eyes, which permit them to be moved freely along the wires. On these disks a series of consecutive numbers-say,

from 1 to 100, inclusive-are printed. There are ten wires, and ten numbers on each wire. The units and numbers containing sixes are all painted one color-say, yellow. Numbers containing twos and sevens are blue. N umbers containing threes and eights are black. Numbers containing fours and nines are white, and the fives and multiples of five are red. These colors may, of course, be varied, but should always conform to the same order in relation to the vertical column to which they 7 belong, the same color in the right half of the line indicating the number of thesame color in the left half, plus fives-thus: the 3 and 3+5=8 should always be of the same color.

Many combinations of numbers can be formed with a view to familiarizing children with numbers. Thus, suppose the numbers 34 and 46 are to be added. By counting ofi' six disks to the right of 34, and counting down four wires representing tens, we have 80 for the result. So l5+26, counting off six numbers, makes 21, and down two rows of tens gives the result41. Many similar combinations may readily be suggested.

What I claim as my invention, and desire to secure by Letters Patent, is

The arithmetical toy herein described, consisting of the base, the frame, and parallel horizontal or cross wires, the latter provided with the sliding and serially-numbered disks, arranged in columns of colors, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS WIESER. Witnesses:

D. P. HOLLOWAY, A. RUPPERT.

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