James H. Mason Primary battery

Primary Battery.

Each branch of electrical science appears to have a certain number of workers who believe that the future has great things in store. Now that competition among manufacturers of dynamos and motors, has become so strong, a number of inventors are devoting themselves to branches as yet undeveloped, and as a consequence

Primary Battery.

the much maligned primary battery comes in for its share of attention. For the benefit of those who may feel an interest in the progress in this field, there are presented herewith a description and illustrations of another primary battery. This cell is the invention of J. H. Mason of Brooklyn, N. Y.

The inventor makes a number of strong claims for the battery. It is stated that the e. m. f. is

Primary Battery.

high and constant, with a very low internal resistance. No crystals form on the carbons and there is little or no local action when the cell is kept on an open circuit for a length of time. The new zincs for the cell are prepared in such a way that they keep clean and bright. It is further claimed that the action in the battery is such that the solution instead of the zinc is used up — in other words, that it is necessary to replenish the fluid more often than the zinc. As the cost of the fluid is less than the zinc, Mr. Mason considers this a feature of importance. Perforated carbons are used.