The Brooks Insulator, samples received from Siemens

The Brooks Insulator.

WE have been shown a sample of BROOKS' insulator, as manufactured by SIEMENS BROTHERS, at Woolwich, England. The specimen is of the screw shank, galvanized iron pattern. The shank, or screw portion entering the post, is heavier and longer than in those manufactured in this country by Mr. BROOKS; the hook is also longer and heavier. So far as strength and appearance are concerned, we think they have the advantage of those made in this country. In Europe larger wires and fewer poles are used than in this country, and it is but reasonable that a larger, and, in some respects stronger insulator, should be required.

SIEMENS BROTHERS are the most extensive manufacturers of telegraph and electrical apparatus in the world. They have immense works in England, at Woolwich, near London; at Berlin, Prussia, and at St. Petersburg, in Russia. As electricians they stand preeminent. They were the first to use gutta percha as an insulator for submarine cables. Dr. WERNER SIEMENS first published the mathematical formula for locating breaks or faults in cables, and also invented the most practical and simple measure of current resistance - the one adopted as the standard by a conference of eminent electricians from all countries, assembled at Vienna in 1868.

This eminent firm have arranged with Mr. BROOKS for the exclusive manufacture of this insulator in Europe, and this arrangement is evidence that they are aware of its merits and superiority to other insulators.

It affords us pleasure to be able to state that the demand for the BROOKS insulator during the past year was greatly in excess of the facilities for their manufacture. Large numbers were sent to South America, and they are now used in all parts of the world.